A device designed to stimulate, by electric impulses, contraction of the heart muscles. It may be temporary (external) or permanent (internal or internal-external).
The physiological mechanisms that govern the rhythmic occurrence of certain biochemical, physiological, and behavioral phenomena.
The small mass of modified cardiac muscle fibers located at the junction of the superior vena cava (VENA CAVA, SUPERIOR) and right atrium. Contraction impulses probably start in this node, spread over the atrium (HEART ATRIUM) and are then transmitted by the atrioventricular bundle (BUNDLE OF HIS) to the ventricle (HEART VENTRICLE).
A condition caused by dysfunctions related to the SINOATRIAL NODE including impulse generation (CARDIAC SINUS ARREST) and impulse conduction (SINOATRIAL EXIT BLOCK). It is characterized by persistent BRADYCARDIA, chronic ATRIAL FIBRILLATION, and failure to resume sinus rhythm following CARDIOVERSION. This syndrome can be congenital or acquired, particularly after surgical correction for heart defects.
Impaired conduction of cardiac impulse that can occur anywhere along the conduction pathway, such as between the SINOATRIAL NODE and the right atrium (SA block) or between atria and ventricles (AV block). Heart blocks can be classified by the duration, frequency, or completeness of conduction block. Reversibility depends on the degree of structural or functional defects.
Failure of equipment to perform to standard. The failure may be due to defects or improper use.
Impaired impulse conduction from HEART ATRIA to HEART VENTRICLES. AV block can mean delayed or completely blocked impulse conduction.
Cardiac arrhythmias that are characterized by excessively slow HEART RATE, usually below 50 beats per minute in human adults. They can be classified broadly into SINOATRIAL NODE dysfunction and ATRIOVENTRICULAR BLOCK.
A subgroup of cyclic nucleotide-regulated ION CHANNELS of the superfamily of pore-loop cation channels that are opened by hyperpolarization rather than depolarization. The ion conducting pore passes SODIUM, CALCIUM, and POTASSIUM cations with a preference for potassium.
The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, and feeding.
Surgically placed electric conductors through which ELECTRIC STIMULATION is delivered to or electrical activity is recorded from a specific point inside the body.
c-Kit positive cells related to SMOOTH MUSCLE CELLS that are intercalated between the autonomic nerves and the effector smooth muscle cells of the GASTROINTESTINAL TRACT. Different phenotypic classes play roles as pacemakers, mediators of neural inputs, and mechanosensors.
An ovoid densely packed collection of small cells of the anterior hypothalamus lying close to the midline in a shallow impression of the OPTIC CHIASM.
Removal of an implanted therapeutic or prosthetic device.
Any disturbances of the normal rhythmic beating of the heart or MYOCARDIAL CONTRACTION. Cardiac arrhythmias can be classified by the abnormalities in HEART RATE, disorders of electrical impulse generation, or impulse conduction.
Freedom of equipment from actual or potential hazards.
An impulse-conducting system composed of modified cardiac muscle, having the power of spontaneous rhythmicity and conduction more highly developed than the rest of the heart.
Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.
A subgroup of cyclic nucleotide-regulated ION CHANNELS within the superfamily of pore-loop cation channels. They are expressed in OLFACTORY NERVE cilia and in PHOTORECEPTOR CELLS and some PLANTS.
The tendency of a phenomenon to recur at regular intervals; in biological systems, the recurrence of certain activities (including hormonal, cellular, neural) may be annual, seasonal, monthly, daily, or more frequently (ultradian).
Abrupt changes in the membrane potential that sweep along the CELL MEMBRANE of excitable cells in response to excitation stimuli.
A small nodular mass of specialized muscle fibers located in the interatrial septum near the opening of the coronary sinus. It gives rise to the atrioventricular bundle of the conduction system of the heart.
The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.
Implantable devices which continuously monitor the electrical activity of the heart and automatically detect and terminate ventricular tachycardia (TACHYCARDIA, VENTRICULAR) and VENTRICULAR FIBRILLATION. They consist of an impulse generator, batteries, and electrodes.
An anthranilic acid derivative with analgesic, anti-inflammatory, and antipyretic properties. It is used in musculoskeletal and joint disorders and administered by mouth and topically. (From Martindale, The Extra Pharmacopoeia, 30th ed, p16)
Irregular HEART RATE caused by abnormal function of the SINOATRIAL NODE. It is characterized by a greater than 10% change between the maximum and the minimum sinus cycle length or 120 milliseconds.
Circadian rhythm signaling proteins that influence circadian clock by interacting with other circadian regulatory proteins and transporting them into the CELL NUCLEUS.
A transient loss of consciousness and postural tone caused by diminished blood flow to the brain (i.e., BRAIN ISCHEMIA). Presyncope refers to the sensation of lightheadedness and loss of strength that precedes a syncopal event or accompanies an incomplete syncope. (From Adams et al., Principles of Neurology, 6th ed, pp367-9)
Methods of creating machines and devices.
The chambers of the heart, to which the BLOOD returns from the circulation.
The voltage differences across a membrane. For cellular membranes they are computed by subtracting the voltage measured outside the membrane from the voltage measured inside the membrane. They result from differences of inside versus outside concentration of potassium, sodium, chloride, and other ions across cells' or ORGANELLES membranes. For excitable cells, the resting membrane potentials range between -30 and -100 millivolts. Physical, chemical, or electrical stimuli can make a membrane potential more negative (hyperpolarization), or less negative (depolarization).
The hemodynamic and electrophysiological action of the HEART ATRIA.
The number of times the HEART VENTRICLES contract per unit of time, usually per minute.
Abnormal cardiac rhythm that is characterized by rapid, uncoordinated firing of electrical impulses in the upper chambers of the heart (HEART ATRIA). In such case, blood cannot be effectively pumped into the lower chambers of the heart (HEART VENTRICLES). It is caused by abnormal impulse generation.
Abnormally rapid heartbeat, usually with a HEART RATE above 100 beats per minute for adults. Tachycardia accompanied by disturbance in the cardiac depolarization (cardiac arrhythmia) is called tachyarrhythmia.
Migration of a foreign body from its original location to some other location in the body.
Surgical insertion of a prosthesis.
Gated, ion-selective glycoproteins that traverse membranes. The stimulus for ION CHANNEL GATING can be due to a variety of stimuli such as LIGANDS, a TRANSMEMBRANE POTENTIAL DIFFERENCE, mechanical deformation or through INTRACELLULAR SIGNALING PEPTIDES AND PROTEINS.
Part of the brain located in the MEDULLA OBLONGATA and PONS. It receives neural, chemical and hormonal signals, and controls the rate and depth of respiratory movements of the DIAPHRAGM and other respiratory muscles.
Devices that control the supply of electric current for running electrical equipment.
Cell membrane glycoproteins that are selectively permeable to potassium ions. At least eight major groups of K channels exist and they are made up of dozens of different subunits.
Elements of limited time intervals, contributing to particular results or situations.
Disturbance in the atrial activation that is caused by transient failure of impulse conduction from the SINOATRIAL NODE to the HEART ATRIA. It is characterized by a delayed in heartbeat and pauses between P waves in an ELECTROCARDIOGRAM.
Characteristics of ELECTRICITY and magnetism such as charged particles and the properties and behavior of charged particles, and other phenomena related to or associated with electromagnetism.
A viral encephalitis caused by the St. Louis encephalitis virus (ENCEPHALITIS VIRUS, ST. LOUIS), a FLAVIVIRUS. It is transmitted to humans and other vertebrates primarily by mosquitoes of the genus CULEX. The primary animal vectors are wild birds and the disorder is endemic to the midwestern and southeastern United States. Infections may be limited to an influenza-like illness or present as an ASEPTIC MENINGITIS or ENCEPHALITIS. Clinical manifestations of the encephalitic presentation may include SEIZURES, lethargy, MYOCLONUS, focal neurologic signs, COMA, and DEATH. (From Adams et al., Principles of Neurology, 6th ed, p750)
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
The production and movement of food items from point of origin to use or consumption.
The continuation of the axillary vein which follows the subclavian artery and then joins the internal jugular vein to form the brachiocephalic vein.
Fields representing the joint interplay of electric and magnetic forces.
Modified cardiac muscle fibers composing the terminal portion of the heart conduction system.
General or unspecified injuries to the heart.
The hollow, muscular organ that maintains the circulation of the blood.
The motor activity of the GASTROINTESTINAL TRACT.
Transmission of the readings of instruments to a remote location by means of wires, radio waves, or other means. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Method in which prolonged electrocardiographic recordings are made on a portable tape recorder (Holter-type system) or solid-state device ("real-time" system), while the patient undergoes normal daily activities. It is useful in the diagnosis and management of intermittent cardiac arrhythmias and transient myocardial ischemia.
The pathologic narrowing of the orifice of the TRICUSPID VALVE. This hinders the emptying of RIGHT ATRIUM leading to elevated right atrial pressure and systemic venous congestion. Tricuspid valve stenosis is almost always due to RHEUMATIC FEVER.
Infections resulting from the implantation of prosthetic devices. The infections may be acquired from intraoperative contamination (early) or hematogenously acquired from other sites (late).
A member of the alkali metals. It has an atomic symbol Cs, atomic number 50, and atomic weight 132.91. Cesium has many industrial applications, including the construction of atomic clocks based on its atomic vibrational frequency.
The time period of daily exposure that an organism receives from daylight or artificial light. It is believed that photoperiodic responses may affect the control of energy balance and thermoregulation.
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
An examination, review and verification of all financial accounts.
The lower right and left chambers of the heart. The right ventricle pumps venous BLOOD into the LUNGS and the left ventricle pumps oxygenated blood into the systemic arterial circulation.
Loss of consciousness due to a reduction in blood pressure that is associated with an increase in vagal tone and peripheral vasodilation.
An aminoperhydroquinazoline poison found mainly in the liver and ovaries of fishes in the order TETRAODONTIFORMES, which are eaten. The toxin causes paresthesia and paralysis through interference with neuromuscular conduction.
A form of heart block in which the electrical stimulation of HEART VENTRICLES is interrupted at either one of the branches of BUNDLE OF HIS thus preventing the simultaneous depolarization of the two ventricles.
Activities associated with the disposition of the dead. It excludes cultural practices such as funeral rites.
The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)
A basic element found in nearly all organized tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.
Further or repeated use of equipment, instruments, devices, or materials. It includes additional use regardless of the original intent of the producer as to disposability or durability. It does not include the repeated use of fluids or solutions.
An element in the alkali group of metals with an atomic symbol K, atomic number 19, and atomic weight 39.10. It is the chief cation in the intracellular fluid of muscle and other cells. Potassium ion is a strong electrolyte that plays a significant role in the regulation of fluid volume and maintenance of the WATER-ELECTROLYTE BALANCE.
Small band of specialized CARDIAC MUSCLE fibers that originates in the ATRIOVENTRICULAR NODE and extends into the membranous part of the interventricular septum. The bundle of His, consisting of the left and the right bundle branches, conducts the electrical impulses to the HEART VENTRICLES in generation of MYOCARDIAL CONTRACTION.
Use of electric potential or currents to elicit biological responses.
Antibiotic analog of CLOXACILLIN.
Fishes which generate an electric discharge. The voltage of the discharge varies from weak to strong in various groups of fish. The ELECTRIC ORGAN and electroplax are of prime interest in this group. They occur in more than one family.
The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.
Methods to induce and measure electrical activities at specific sites in the heart to diagnose and treat problems with the heart's electrical system.
Inflammation of the inner lining of the heart (ENDOCARDIUM), the continuous membrane lining the four chambers and HEART VALVES. It is often caused by microorganisms including bacteria, viruses, fungi, and rickettsiae. Left untreated, endocarditis can damage heart valves and become life-threatening.
Various material objects and items in the home. It includes temporary or permanent machinery and appliances. It does not include furniture or interior furnishings (FURNITURE see INTERIOR DESIGN AND FURNISHINGS; INTERIOR FURNISHINGS see INTERIOR DESIGN AND FURNISHINGS).
The ability of a substrate to allow the passage of ELECTRONS.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
Basic helix-loop-helix (bHLH) domain-containing proteins that contain intrinsic HISTONE ACETYLTRANSFERASE activity and play important roles in CIRCADIAN RHYTHM regulation. Clock proteins combine with Arntl proteins to form heterodimeric transcription factors that are specific for E-BOX ELEMENTS and stimulate the transcription of several E-box genes that are involved in cyclical regulation. This transcriptional activation also sets into motion a time-dependent feedback loop which in turn down-regulates the expression of clock proteins.
Biological mechanism that controls CIRCADIAN RHYTHM. Circadian clocks exist in the simplest form in cyanobacteria and as more complex systems in fungi, plants, and animals. In humans the system includes photoresponsive RETINAL GANGLION CELLS and the SUPRACHIASMATIC NUCLEUS that acts as the central oscillator.
A movement, caused by sequential muscle contraction, that pushes the contents of the intestines or other tubular organs in one direction.
A plant genus of the family APIACEAE. Members contain THAPSIGARGIN and other guaianolides (SESQUITERPENES, GUAIANOLIDE).
One of two ganglionated neural networks which together form the ENTERIC NERVOUS SYSTEM. The myenteric (Auerbach's) plexus is located between the longitudinal and circular muscle layers of the gut. Its neurons project to the circular muscle, to other myenteric ganglia, to submucosal ganglia, or directly to the epithelium, and play an important role in regulating and patterning gut motility. (From FASEB J 1989;3:127-38)
The study of the electrical activity and characteristics of the HEART; MYOCARDIUM; and CARDIOMYOCYTES.
The region of the STOMACH at the junction with the DUODENUM. It is marked by the thickening of circular muscle layers forming the pyloric sphincter to control the opening and closure of the lumen.
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
Abnormally rapid heartbeats originating from one or more automatic foci (nonsinus pacemakers) in the HEART ATRIUM but away from the SINOATRIAL NODE. Unlike the reentry mechanism, automatic tachycardia speeds up and slows down gradually. The episode is characterized by a HEART RATE between 135 to less than 200 beats per minute and lasting 30 seconds or longer.
A family of marine CRUSTACEA, in the order DECAPODA, comprising the clawless lobsters. They are found in tropical and subtropical waters and characterized by short spines along the length of the tail and body.
The region between the sharp indentation at the lower third of the STOMACH (incisura angularis) and the junction of the PYLORUS with the DUODENUM. Pyloric antral glands contain mucus-secreting cells and gastrin-secreting endocrine cells (G CELLS).
The measurement of frequency or oscillation changes.
Basic helix-loop-helix (bHLH) domain-containing proteins that play important roles in CIRCADIAN RHYTHM regulation. They combine with CLOCK PROTEINS to form heterodimeric transcription factors that are specific for E-BOX ELEMENTS and stimulate the transcription of several E-box genes that are involved in cyclical regulation.
Proteins that catalyze MEMBRANE FUSION.
Agents used for the treatment or prevention of cardiac arrhythmias. They may affect the polarization-repolarization phase of the action potential, its excitability or refractoriness, or impulse conduction or membrane responsiveness within cardiac fibers. Anti-arrhythmia agents are often classed into four main groups according to their mechanism of action: sodium channel blockade, beta-adrenergic blockade, repolarization prolongation, or calcium channel blockade.
Unstriated and unstriped muscle, one of the muscles of the internal organs, blood vessels, hair follicles, etc. Contractile elements are elongated, usually spindle-shaped cells with centrally located nuclei. Smooth muscle fibers are bound together into sheets or bundles by reticular fibers and frequently elastic nets are also abundant. (From Stedman, 25th ed)
An electrical current applied to the HEART to terminate a disturbance of its rhythm, ARRHYTHMIAS, CARDIAC. (Stedman, 25th ed)
Striated muscle cells found in the heart. They are derived from cardiac myoblasts (MYOBLASTS, CARDIAC).
Flavoproteins that function as circadian rhythm signaling proteins in ANIMALS and as blue-light photoreceptors in PLANTS. They are structurally-related to DNA PHOTOLYASES and it is believed that both classes of proteins may have originated from an earlier protein that played a role in protecting primitive organisms from the cyclical exposure to UV LIGHT.
Isopropyl analog of EPINEPHRINE; beta-sympathomimetic that acts on the heart, bronchi, skeletal muscle, alimentary tract, etc. It is used mainly as bronchodilator and heart stimulant.
Types of artificial pacemakers with implantable leads to be placed at multiple intracardial sites. They are used to treat various cardiac conduction disturbances which interfere with the timing of contraction of the ventricles. They may or may not include defibrillating electrodes (IMPLANTABLE DEFIBRILLATORS) as well.
The portion of the GASTROINTESTINAL TRACT between the PYLORUS of the STOMACH and the ILEOCECAL VALVE of the LARGE INTESTINE. It is divisible into three portions: the DUODENUM, the JEJUNUM, and the ILEUM.
A glutamate antagonist (RECEPTORS, GLUTAMATE) used as an anticonvulsant (ANTICONVULSANTS) and to prolong the survival of patients with AMYOTROPHIC LATERAL SCLEROSIS.
Removal of tissue with electrical current delivered via electrodes positioned at the distal end of a catheter. Energy sources are commonly direct current (DC-shock) or alternating current at radiofrequencies (usually 750 kHz). The technique is used most often to ablate the AV junction and/or accessory pathways in order to interrupt AV conduction and produce AV block in the treatment of various tachyarrhythmias.
The valve consisting of three cusps situated between the right atrium and right ventricle of the heart.
Signal transduction mechanisms whereby calcium mobilization (from outside the cell or from intracellular storage pools) to the cytoplasm is triggered by external stimuli. Calcium signals are often seen to propagate as waves, oscillations, spikes, sparks, or puffs. The calcium acts as an intracellular messenger by activating calcium-responsive proteins.
A meshlike structure composed of interconnecting nerve cells that are separated at the synaptic junction or joined to one another by cytoplasmic processes. In invertebrates, for example, the nerve net allows nerve impulses to spread over a wide area of the net because synapses can pass information in any direction.
A plant genus of the family Aloeaceae, order Liliales (or Asphodelaceae, Asparagales in APG system) which is used medicinally. It contains anthraquinone glycosides such as aloin-emodin or aloe-emodin (EMODIN).
An analgesic and anti-inflammatory agent used in the treatment of rheumatoid arthritis.
Amino acid transporter systems capable of transporting neutral amino acids (AMINO ACIDS, NEUTRAL).
A general term indicating inflammation of the BRAIN and SPINAL CORD, often used to indicate an infectious process, but also applicable to a variety of autoimmune and toxic-metabolic conditions. There is significant overlap regarding the usage of this term and ENCEPHALITIS in the literature.
A device that substitutes for a heart valve. It may be composed of biological material (BIOPROSTHESIS) and/or synthetic material.
Abnormally rapid heartbeats with sudden onset and cessation.
Databases devoted to knowledge about specific genes and gene products.
The hemodynamic and electrophysiological action of the HEART VENTRICLES.
Persons whose profession is to give legal advice and assistance to clients and represent them in legal matters. (American Heritage Dictionary, 3d ed)
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
The muscular structure separating the right and the left lower chambers (HEART VENTRICLES) of the heart. The ventricular septum consists of a very small membranous portion just beneath the AORTIC VALVE, and a large thick muscular portion consisting of three sections including the inlet septum, the trabecular septum, and the outlet septum.
The venous trunk of the upper limb; a continuation of the basilar and brachial veins running from the lower border of the teres major muscle to the outer border of the first rib where it becomes the subclavian vein.
That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.
The restoration of the sequential order of contraction and relaxation of the HEART ATRIA and HEART VENTRICLES by atrio-biventricular pacing.
An aminoquinoline that is given by mouth to produce a radical cure and prevent relapse of vivax and ovale malarias following treatment with a blood schizontocide. It has also been used to prevent transmission of falciparum malaria by those returning to areas where there is a potential for re-introduction of malaria. Adverse effects include anemias and GI disturbances. (From Martindale, The Extra Pharmacopeia, 30th ed, p404)
The venous trunk which returns blood from the head, neck, upper extremities and chest.
Pathological conditions involving the HEART including its structural and functional abnormalities.
Electric conductors through which electric currents enter or leave a medium, whether it be an electrolytic solution, solid, molten mass, gas, or vacuum.
A heterogenous group of transient or low voltage activated type CALCIUM CHANNELS. They are found in cardiac myocyte membranes, the sinoatrial node, Purkinje cells of the heart and the central nervous system.
A heterogeneous condition in which the heart is unable to pump out sufficient blood to meet the metabolic need of the body. Heart failure can be caused by structural defects, functional abnormalities (VENTRICULAR DYSFUNCTION), or a sudden overload beyond its capacity. Chronic heart failure is more common than acute heart failure which results from sudden insult to cardiac function, such as MYOCARDIAL INFARCTION.
The flattened, funnel-shaped expansion connecting the URETER to the KIDNEY CALICES.
The opening and closing of ion channels due to a stimulus. The stimulus can be a change in membrane potential (voltage-gated), drugs or chemical transmitters (ligand-gated), or a mechanical deformation. Gating is thought to involve conformational changes of the ion channel which alters selective permeability.
Cellular antigens that are specific for MELANOMA cells.
A protein-tyrosine kinase receptor that is specific for STEM CELL FACTOR. This interaction is crucial for the development of hematopoietic, gonadal, and pigment stem cells. Genetic mutations that disrupt the expression of PROTO-ONCOGENE PROTEINS C-KIT are associated with PIEBALDISM, while overexpression or constitutive activation of the c-kit protein-tyrosine kinase is associated with tumorigenesis.
The physical activity of a human or an animal as a behavioral phenomenon.
Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic.
A common name used for the genus Cavia. The most common species is Cavia porcellus which is the domesticated guinea pig used for pets and biomedical research.
Family of large marine CRUSTACEA, in the order DECAPODA. These are called clawed lobsters because they bear pincers on the first three pairs of legs. The American lobster and Cape lobster in the genus Homarus are commonly used for food.
Computer systems utilized as adjuncts in the treatment of disease.
The absence of light.
A condition that occurs when the obstruction of the thin-walled SUPERIOR VENA CAVA interrupts blood flow from the head, upper extremities, and thorax to the RIGHT ATRIUM. Obstruction can be caused by NEOPLASMS; THROMBOSIS; ANEURYSM; or external compression. The syndrome is characterized by swelling and/or CYANOSIS of the face, neck, and upper arms.
Physical forces and actions in living things.
The class of box jellyfish, in the phylum CNIDARIA, characterized by their cube shape, and considered the most venomous jellyfish.
Electrodes with an extremely small tip, used in a voltage clamp or other apparatus to stimulate or record bioelectric potentials of single cells intracellularly or extracellularly. (Dorland, 28th ed)
Surgery performed on the heart.
Bouts of physical irritability or movement alternating with periods of quiescence. It includes biochemical activity and hormonal activity which may be cellular. These cycles are shorter than 24 hours and include sleep-wakefulness cycles and the periodic activation of the digestive system.
The 10th cranial nerve. The vagus is a mixed nerve which contains somatic afferents (from skin in back of the ear and the external auditory meatus), visceral afferents (from the pharynx, larynx, thorax, and abdomen), parasympathetic efferents (to the thorax and abdomen), and efferents to striated muscle (of the larynx and pharynx).
A class of drugs that act by selective inhibition of calcium influx through cellular membranes.
A condition in which HEART VENTRICLES exhibit impaired function.
A colorless liquid with a fragrant odor. It is used as an intermediate, solvent and in cosmetics.
A guanidine that opens POTASSIUM CHANNELS producing direct peripheral vasodilatation of the ARTERIOLES. It reduces BLOOD PRESSURE and peripheral resistance and produces fluid retention. (Martindale The Extra Pharmacopoeia, 31st ed)
A standard and widely accepted diagnostic test used to identify patients who have a vasodepressive and/or cardioinhibitory response as a cause of syncope. (From Braunwald, Heart Disease, 7th ed)
Proteins that originate from insect species belonging to the genus DROSOPHILA. The proteins from the most intensely studied species of Drosophila, DROSOPHILA MELANOGASTER, are the subject of much interest in the area of MORPHOGENESIS and development.
A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.
The protein constituents of muscle, the major ones being ACTINS and MYOSINS. More than a dozen accessory proteins exist including TROPONIN; TROPOMYOSIN; and DYSTROPHIN.
A group of slow opening and closing voltage-gated potassium channels. Because of their delayed activation kinetics they play an important role in controlling ACTION POTENTIAL duration.
The induction of local hyperthermia by either short radio waves or high-frequency sound waves.
Contractile activity of the MYOCARDIUM.
A methylpyrrole-carboxylate from RYANIA that disrupts the RYANODINE RECEPTOR CALCIUM RELEASE CHANNEL to modify CALCIUM release from SARCOPLASMIC RETICULUM resulting in alteration of MUSCLE CONTRACTION. It was previously used in INSECTICIDES. It is used experimentally in conjunction with THAPSIGARGIN and other inhibitors of CALCIUM ATPASE uptake of calcium into SARCOPLASMIC RETICULUM.
A large subphylum of mostly marine ARTHROPODS containing over 42,000 species. They include familiar arthropods such as lobsters (NEPHROPIDAE), crabs (BRACHYURA), shrimp (PENAEIDAE), and barnacles (THORACICA).
A member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23.
Drugs that selectively bind to and activate beta-adrenergic receptors.
Biological systems as affected by time. Aging, biological rhythms, and cyclic phenomena are included. Statistical, computer-aided mathematical procedures are used to describe, in mathematical terminology, various biological functions over time.
Backflow of blood from the RIGHT VENTRICLE into the RIGHT ATRIUM due to imperfect closure of the TRICUSPID VALVE.
Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.
A generic expression for any tachycardia that originates above the BUNDLE OF HIS.
An element of the alkaline earth group of metals. It has an atomic symbol Ba, atomic number 56, and atomic weight 138. All of its acid-soluble salts are poisonous.
A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.
An opisthobranch mollusk of the order Anaspidea. It is used frequently in studies of nervous system development because of its large identifiable neurons. Aplysiatoxin and its derivatives are not biosynthesized by Aplysia, but acquired by ingestion of Lyngbya (seaweed) species.
A bracelet or necklace worn by an individual that alerts emergency personnel of medical information for that individual which could affect their condition or treatment.
Infections with viruses of the genus PNEUMOVIRUS, family PARAMYXOVIRIDAE. This includes RESPIRATORY SYNCYTIAL VIRUS INFECTIONS, an important cause of respiratory disease in humans.
Inorganic or organic compounds that contain boron as an integral part of the molecule.
An abnormal extension of a gingival sulcus accompanied by the apical migration of the epithelial attachment and bone resorption.
Precursor cells destined to differentiate into cardiac myocytes (MYOCYTES, CARDIAC).
An enzyme that catalyzes the formation of CoA derivatives from ATP, acetate, and CoA to form AMP, pyrophosphate, and acetyl CoA. It acts also on propionates and acrylates. EC 6.2.1.1.
A form of CARDIAC MUSCLE disease, characterized by left and/or right ventricular hypertrophy (HYPERTROPHY, LEFT VENTRICULAR; HYPERTROPHY, RIGHT VENTRICULAR), frequent asymmetrical involvement of the HEART SEPTUM, and normal or reduced left ventricular volume. Risk factors include HYPERTENSION; AORTIC STENOSIS; and gene MUTATION; (FAMILIAL HYPERTROPHIC CARDIOMYOPATHY).
A species of AZORHIZOBIUM which forms nodules on the roots of the tropical legume Sesbania rostrata. (From Bergey's Manual of Determinative Bacteriology, 9th ed)
The lower portion of the BRAIN STEM. It is inferior to the PONS and anterior to the CEREBELLUM. Medulla oblongata serves as a relay station between the brain and the spinal cord, and contains centers for regulating respiratory, vasomotor, cardiac, and reflex activities.
An organ of digestion situated in the left upper quadrant of the abdomen between the termination of the ESOPHAGUS and the beginning of the DUODENUM.
Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.
Properties, functions, and processes of the URINARY TRACT as a whole or of any of its parts.
Ion channels that specifically allow the passage of SODIUM ions. A variety of specific sodium channel subtypes are involved in serving specialized functions such as neuronal signaling, CARDIAC MUSCLE contraction, and KIDNEY function.
A professional society in the United States whose membership is composed of hospitals.
Voltage-dependent cell membrane glycoproteins selectively permeable to calcium ions. They are categorized as L-, T-, N-, P-, Q-, and R-types based on the activation and inactivation kinetics, ion specificity, and sensitivity to drugs and toxins. The L- and T-types are present throughout the cardiovascular and central nervous systems and the N-, P-, Q-, & R-types are located in neuronal tissue.
In invertebrate zoology, a lateral lobe of the FOREBRAIN in certain ARTHROPODS. In vertebrate zoology, either of the corpora bigemina of non-mammalian VERTEBRATES. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1329)
Burns produced by contact with electric current or from a sudden discharge of electricity.
Lectin purified from peanuts (ARACHIS HYPOGAEA). It binds to poorly differentiated cells and terminally differentiated cells and is used in cell separation techniques.
A pathological constriction that can occur above (supravalvular stenosis), below (subvalvular stenosis), or at the AORTIC VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA.
A flexible, tubular device that is used to carry fluids into or from a blood vessel, hollow organ, or body cavity.
Tubes inserted to create communication between a cerebral ventricle and the internal jugular vein. Their emplacement permits draining of cerebrospinal fluid for relief of hydrocephalus or other condition leading to fluid accumulation in the ventricles.
The electrical properties, characteristics of living organisms, and the processes of organisms or their parts that are involved in generating and responding to electrical charges.
Agents affecting the function of, or mimicking the actions of, the autonomic nervous system and thereby having an effect on such processes as respiration, circulation, digestion, body temperature regulation, certain endocrine gland secretions, etc.
The hemodynamic and electrophysiological action of the RIGHT ATRIUM.
A condition in which the LEFT VENTRICLE of the heart was functionally impaired. This condition usually leads to HEART FAILURE; MYOCARDIAL INFARCTION; and other cardiovascular complications. Diagnosis is made by measuring the diminished ejection fraction and a depressed level of motility of the left ventricular wall.
The thin membrane-like muscular structure separating the right and the left upper chambers (HEART ATRIA) of a heart.
Inflammation of the ENDOCARDIUM caused by BACTERIA that entered the bloodstream. The strains of bacteria vary with predisposing factors, such as CONGENITAL HEART DEFECTS; HEART VALVE DISEASES; HEART VALVE PROSTHESIS IMPLANTATION; or intravenous drug use.
Math calculations done for preparing appropriate doses of medicines, taking into account conversions of WEIGHTS AND MEASURES. Mistakes are one of the sources of MEDICATION ERRORS.
The active sympathomimetic hormone from the ADRENAL MEDULLA. It stimulates both the alpha- and beta- adrenergic systems, causes systemic VASOCONSTRICTION and gastrointestinal relaxation, stimulates the HEART, and dilates BRONCHI and cerebral vessels. It is used in ASTHMA and CARDIAC FAILURE and to delay absorption of local ANESTHETICS.

Hierarchy of ventricular pacemakers. (1/1706)

To characterize the pattern of pacemaker dominance in the ventricular specialized conduction system (VSCS), escape ventricular pacemakers were localized and quantified in vivo and in virto, in normal hearts and in hearts 24 hours after myocardial infarction. Excape pacemaker foci were localized in vivo during vagally induced atrial arrest by means of electrograms recorded from the His bundle and proximal bundle branches and standard electrocardiographic limb leads. The VSCS was isolated using a modified Elizari preparation or preparations of each bundle branch. Peacemakers were located by extra- and intracellular recordings. Escape pacemaker foci in vivo were always in the proximal conduction system, usually the left bundle branch. The rate was 43+/-11 (mean+/-SD) beats/min. After beta-adrenergic blockade, the mean rate fell to 31+/-10 beats/min, but there were no shifts in pacemaker location. In the infarcted hearts, pacemakers were located in the peripheral left bundle branch. The mean rate was 146+/-20 beats/min. In isolated normal preparations, the dominant pacemakers usually were in the His bundle, firing at a mean rate of 43+/-10 beats/min. The rates of pacemakers diminished with distal progression. In infarcted hearts, the pacemakers invariably were in the infarct zone. The mean firing rates were not influenced by beta-adrenergic blockade. The results indicate that the dominant pacemakers are normally in the very proximal VSCS, but after myocardial infarction pacemaker dominance is shifted into the infarct. Distribution of pacemaker dominance is independent of sympathetic influence.  (+info)

Electrophysiological effects of mexiletine in man. (2/1706)

The electrophysiological effects of intravenous mexiletine in a dose of 200 to 250 mg given over 5 minutes, followed by continuous infusion of 60 to 90 mg per hour, were studied in 5 patients with normal conduction and in 20 patients with a variety of disturbances of impulse formation and conduction, by means of His bundle electrography, atrial pacing, and the extrastimulus method. In all but 2 patients the plasma level was above the lower therapeutic limit. Mexiletine had no consistent effects on sinus frequency and atrial refractoriness. The sinoatrial recovery time changed inconsistently in both directions; however, of the 5 patients in whom an increase was evident, 3 had sinus node dysfunction. In most patients mexiletine increased the AV nodal conduction time at paced atrial rates and shifted the Wenckebach point to a lower atrial rate. The effective refractory period of the AV node was not consistently influenced, while the functional refractory period increased in 12 out of 14 patients. The HV intervals increased by a mean of 11 ms in 8 patients and were unchanged in 17. Both the relative and effective refractory period of the His-Purkinje system increased after mexiletine. Non-cardiac side effects occurred in 7 out of 25 patients, and cardiac side effects, including one serious, in 2. The results indicate that mexiletine shares some electrophysiological properties with procainamide and quinidine, when given to patients with conduction defects, and that the drug should not be used in patients with pre-existing impairment of impulse formation or conduction. It has additional effects on AV nodal conduction which may be of value in the treatment of re-entrant tachycardias involving the AV node.  (+info)

Chronic His bundle block. Clinical, electrocardiographic, electrophysiological, and follow-up studies on 16 patients. (3/1706)

This report describes 16 patients with block within the His bundle seen over a period of 55 months. Ten were women and 6 men, with an average age of 76 years, range, 42 to 98 years. All patients had His bundle recordings showing split His bundle potentials (H and H) (13 patients) or narrow QRS with block distal to the His bundle potential (3 patients). Of the 16 patients, 10 had complete heart block, 4 second degree AV block (2 patients with Mobitz type II, and 2 with 2:1), and 2 first degree AV block. Ten patients had a narrow QRS in the conducted beats or escape rhythms. Intravenous atropine (1 to 2 mg) had a variable effect on AV conduction and the rate of the escape rhythm. Twelve patients have had a permanent pacemaker implanted. During the follow-up period, 10 patients died 1 to 31 months from the time of initial examination. The remaining 6 patients (5 with pacemaker) are alive 3 to 58 months later.  (+info)

Fatal outcome arising from use of a sutureless "corkscrew" epicardial pacing electrode inserted into apex of left ventricle. (4/1706)

A 59-year-old man is described in whom the insertion of an epicardial sutureless "corkscrew" electrode resulted in fatal ventricular perforation. Fatal myocardial perforation can occur with this electrode and the apex of the left ventricle should never be used as the site of insertion. Necropsy also showed that the transvenous right ventricular electrode, inserted one year previously, had penetrated a tricuspid leaflet. This could have accounted for the ensuing pacing failure.  (+info)

Effects of varying pacemaker sites on left ventricular performance. (5/1706)

The hemodynamic effects of the site of the artificial cardiac stimulation were studied in 17 open chest dogs. The right atrium and five ventricular sites (the inflow and outflow tracts and apex of the right ventricle, apex and lateral wall of the left ventricle) were stimulated electronically at a given rate, ranging from 130 to 190 per min. When cardiac performance during ventricular pacing was compared with those during right atrial pacing, the former uniformly caused a diminution of cardiac output and systemic blood pressure, without reduction of left ventricular end-diastolic pressure. Ventricular function curves, in which left ventricular stroke work was related to left ventricular end-diastolic pressure, shifted downwards and to the right during ventricular pacing. Stimulation frequency did not alter these variables. It was considered that the left ventricular dysfunction in ventricular pacing resulted from the absence of atrial contribution to ventricular filling, mitral regurgitation present and asynchronous ventricular contraction. No significant difference of cardiac performance was demonstrated by changing the site of ventricular pacing, suggesting that the mode of ventricular depolarization itself was not relevant to a decrease in cardiac performance.  (+info)

Pacemaker lead infection: echocardiographic features, management, and outcome. (6/1706)

OBJECTIVE: To compare transthoracic and transoesophageal echocardiography (TTE, TOE) in patients with permanent pacemaker lead infection and to evaluate the safety of medical extraction in cases of large vegetations. METHODS: TTE and TOE were performed in 23 patients with definite pacemaker lead infection. Seventeen patients without previous infection served as a TOE reference for non-infected leads. RESULTS: TTE was positive in seven cases (30%) whereas with TOE three different types of vegetations attached to the leads were visualised in 21 of the 23 cases (91%). Of the 20 patients with vegetations and lead culture, 17 (85%) had bacteriologically active infection. Left sided valvar endocarditis was diagnosed in two patients. In the control group, strands were visualised by TOE in five patients, and vegetations in none. Medical extraction of vegetations >/= 10 mm was performed in 12 patients and was successful in nine (75%) without clinical pulmonary embolism. After 31.2 (19.1) months of follow up (mean (SD)), all patients except one were cured of infection; three died from other causes. CONCLUSIONS: Combined with bacteriological data, vegetations seen on TOE strongly suggest pacemaker lead infection. Normal TTE examinations do not exclude this diagnosis because of its poor sensitivity. Medical extraction of even large vegetations appeared to be safe.  (+info)

Pacemaker lead infection: report of three cases and review of the literature. (7/1706)

Pacemaker lead infection is a rare condition, most often occurring when intervention is needed after pacemaker implantation. Diagnosis is by blood cultures and confirmation by transoesophageal echocardiography; transthoracic echocardiography is often inadequate. A literature review indicated the microorganism most responsible for late lead infection is Staphylococcus epidermidis (which can grow on plastic material). A retrospective analysis of patient files from the authors' institution (1993-97) yielded three patients with proven pacemaker lead endocarditis. The diagnosis of pacemaker endocarditis was by transoesophageal echocardiography. The endocarditis appeared after a long period and in two of the three patients there was S epidermidis infection. Thoracotomy with removal of the infected system was performed because of the large dimensions of the vegetations. A new pacemaker was implanted: in one patient with endocardial leads, in the other two with epicardial leads. All three patients recovered well and follow up was uneventful for at least one year.  (+info)

Pacemaker lead extraction with the laser sheath: results of the pacing lead extraction with the excimer sheath (PLEXES) trial. (8/1706)

OBJECTIVES: The purpose of this study was to evaluate the safety and effectiveness of pacemaker lead extraction with the excimer sheath in comparison to nonlaser lead extraction. BACKGROUND: Fibrotic attachments that develop between chronically implanted pacemaker leads and to the venous, valvular and cardiac structures are the major obstacles to safe and consistent lead extraction. Locking stylets and telescoping sheaths produce a technically demanding but effective technique of mechanically disrupting the fibrosis. However, ultraviolet excimer laser light dissolves instead of tearing the tissue attachments. METHODS: A randomized trial of lead extraction was conducted in 301 patients with 465 chronically implanted pacemaker leads. The laser group patients had the leads removed with identical tools as the nonlaser group with the exception that the inner telescoping sheath was replaced with the 12-F excimer laser sheath. Success for both groups was defined as complete lead removal with the randomized therapy without complications. RESULTS: Complete lead removal rate was 94% in the laser group and 64% in the nonlaser group (p = 0.001). Failed nonlaser extraction was completed with the laser tools 88% of the time. The mean time to achieve a successful lead extraction was significantly reduced for patients randomized to the laser tools, 10.1 +/- 11.5 min compared with 12.9 +/- 19.2 min for patients randomized to nonlaser techniques (p < 0.04). Potentially life-threatening complications occurred in none of the nonlaser and three of the laser patients, including one death (p = NS). CONCLUSIONS: Laser-assisted pacemaker lead extraction has significant clinical advantages over extraction without laser tools and is associated with significant risks.  (+info)

Worldwide Cardiac Rhythm Management Devices Market Research Report gives essential Data, reviews, Scope of the Product and seller preparation. The market dynamic powers have been resolved in the wake of leading a Product Study of the Global Cardiac Rhythm Management Devices market. It additionally gives key examination available status of the Cardiac Rhythm Management Devices producers with best raw numbers, which means, definition, SWOT Study, master feelings and the most recent advancements over the globe. The Report additionally computes the market size, Cardiac Rhythm Management Devices Sales, Price, Revenue, Gross Margin and Market Share, cost structure and development rate. The report considers the income created from the deals of This Report and innovations by different application fragments.. The prime target of this report is to enable the client to comprehend the market regarding its definition, division, market potential, powerful Cardiac Rhythm Management Devices market patterns, ...
Understand the influence of COVID-19 on the Cardiac Rhythm Management Device Market with our analysts monitoring the situation across the globe.. Overview of Cardiac Rhythm Management Device Market Report 2021. The Cardiac Rhythm Management Device report has been prepared based on the synthesis, analysis, and interpretation of information about the market collected from specialized sources. The competitive landscape section of the report provides a clear insight into the market share analysis of key industry players.. Key players in the global Cardiac Rhythm Management Device market covered in Chapter 4:, GE Healthcare, Neovasc, ZOLL Medical, BIOTRONIK, Physio-Control (Subsidiary of Stryker), Schiller, Mortara Instrument (acquired by Hill-Rom Holdings), Abbott, Cardiac Science, Medtronic, LivaNova, Cook Medical, Integer, Rchling Medical, Boston Scientific, CCC Medical Devices (acquired by Greatbatch), Philips Healthcare. Millions of people across the world were infected with the novel ...
A research report on Cardiac Rhythm Management Devices Market features a succinct analysis on the latest market trends. The report also includes detailed abstracts about statistics, revenue forecasts and market valuation, which additionally highlights its status in the competitive landscape and growth trends accepted by major industry players.. Increase in innovative and advanced technology requirements in healthcare products. Prevalence of cardiac related patients and diseases are some factors driving the market of cardiac Rhythm Management devices market.. Cardiac Rhythm Management Devices are the devices which are made to prevent the unfortunate events with the cardiac patients. However prevalence of heart diseases is increasing day to day, need of prevention to these diseases is increasing and so are the technology standards. Healthcare technology is getting so advance that it came up with cardiac prevention devices to poised heart related issues. Innovation of healthcare is reaching the ...
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RnRMarketResearch.com adds report BRIC Cardiac Rhythm Management Market Outlook to 2020 to its store.. BRIC Cardiac Rhythm Management Market Outlook to 2020″, provides key market data on the BRIC Cardiac Rhythm Management Devices market. The report provides value, in millions of US dollars, and volume (in units) and average price data (in US dollars), within market categories Cardiac Resynchronisation Therapy (Defibrillators and Pacemakers), Implantable Cardioverter Defibrillators, Implantable Loop Recorders and Pacemakers.. The report also provides company shares and distribution shares data for the market category, and global corporate-level profiles of the key market participants, pipeline products, and news and deals related to the Cardiac Rhythm Management Market wherever available.. Inquire For Discount @ http://www.rnrmarketresearch.com/contacts/discount?rname=180874 .. The data in the report is derived from dynamic market forecast models. GlobalData uses epidemiology and capital ...
Have Any Query? Ask Our Expert for Cardiac Rhythm Management Device Market Report @ http://www.360marketupdates.com/enquiry/pre-order-enquiry/10466348. No. of pages in report: 119. Price of Report: $ 3480 (Single User Licence). About 360 Market Updates:. 360 Market Updates is the credible source for gaining the market research reports that will exponentially accelerate your business. We are among the leading report resellers in the business world committed towards optimizing your business. The reports we provide are based on a research that covers a magnitude of factors such as technological evolution, economic shifts and a detailed study of market segments.. Contact-. Mr. Ameya ...
Cardiac Monitoring & Cardiac Rhythm Management - Global Market Outlook (2016-2022) Purchase This Report by calling ResearchnReports.com at +1-888-631-6977.. The latest intelligence on the Cardiac Monitoring & Cardiac Rhythm Management market is available in the Global Cardiac Monitoring & Cardiac Rhythm Management Market Research report. This report is a culmination of the key events from last decade to present day, and helps to formulate the best strategy catered to both established market players and new entrants.. A birds eye view of the Cardiac Monitoring & Cardiac Rhythm Management industry made available in the report helps readers to understand the key drivers, restraints, challenges, and opportunities that are shaping the global Cardiac Monitoring & Cardiac Rhythm Management market. Furthermore, the report evaluates challenges experienced from buyers and sellers side. The report offers advice from key industry experts on how these challenges can be overcome.. A major chunk of the ...
TY - JOUR. T1 - Pulmonary embolism in patients with transvenous cardiac implantable electronic device leads. AU - Noheria, Amit. AU - Ponamgi, Shiva P.. AU - DeSimone, Christopher V.. AU - Vaidya, Vaibhav R.. AU - Aakre, Christopher A.. AU - Ebrille, Elisa. AU - Hu, Tiffany. AU - Hodge, David O.. AU - Slusser, Joshua P.. AU - Ammash, Naser M.. AU - Bruce, Charles J. AU - Rabinstein, Alejandro. AU - Friedman, Paul Andrew. AU - Asirvatham, Samuel J. PY - 2016/2/1. Y1 - 2016/2/1. N2 - Background Cardiac implantable electronic devices (CIEDs) are commonly associated with transvenous lead-related thrombi that can cause pulmonary embolism (PE). Methods and results We retrospectively evaluated all patients with transvenous CIED leads implanted at Mayo Clinic Rochester between 1 January 2000, and 25 October 2010. Pulmonary embolism outcomes during follow-up were screened using diagnosis codes and confirmed with imaging study reports. Of 5646 CIED patients (age 67.3 ± 16.3 years, 64% men, mean follow-up ...
Nov. 18, 1969 w. GREATBATCH 3,478,746 CARDIAC IMPLANTABLE DEMAND PACEMAKER Filed May 12, 1965 2 Sheets-Sheet 1 Q l-0IVEIEART BEAT F! G. I INVENTOR. WIL SON GREA TBA TCI-I A 7 TORNE). 2 Sheets-Sheet 2 Filed May 12, 1965 A 7 TOR/VEK United States Patent M 3,478,746 CARDIAC IMPLANTABLE DEMAND PACEMAKER Wilson Greatbatch, Clarence, N.Y., assignor to Medtronic, Inc., Minneapolis, Minn., a corporation of Minnesota Filed May 12, 1965, Ser. No. 455,132 Int. Cl. A61n N36 US. Cl. 128-421 4 Claims ABSTRACT OF THE DISCLOSURE A portable, self-contained, demand cardiac Pacemaker including circuitry which senses each natural heartbeat and resets the Pacemaker pulse generator timing in response to it. The Pacemaker stimulates only skipped beats and does not compete with natural beats, The first generated pulse after a natural beat occurs after a preset time interval slightly longer than the natural interval unless another natural beat has intervened. When a natural beat intervenes, the Pacemaker timer is ...
Cardiac rhythm management refers to a process of monitoring functioning of the heart through devices. Cardiac rhythm management devices are used to provide
Production, means the output of Cardiac Rhythm Management (CRM) Devices Batteries Revenue, means the sales value of Cardiac Rhythm Management (CRM) Devices Batteries This report studies Cardiac Rhythm Management (CRM) Devices Batteries in Global market, especially in North America, Europe, China, Japan, Southeast Asia and India, focuses on top manufacturers in global market, with capacity, produc
The present invention is directed toward a sensing architecture for use in cardiac rhythm management devices. The sensing architecture of the present invention provides a method and means for certifying detected events by the cardiac rhythm management device. Moreover, by exploiting the enhanced capability to accurately identifying only those sensed events that are desirable, and preventing the use of events marked as suspect, the sensing architecture of the present invention can better discriminate between rhythms appropriate for device therapy and those that are not.
Various aspects of the present subject matter relate to a device. In various embodiments, the device comprises at least one port adapted to connect at least one lead, a CRM functions module connected to the port and adapted to provide at least one CRM function using the lead, a neural function module, and a controller connected to the CRM functions module and the neural function module. The at least one CRM function includes a function to provide an electrical signal to the lead to capture cardiac tissue. The neural function module includes a signal processing module connected to the port and adapted to receive and process a nerve traffic signal from the lead into a signal indicative of the nerve traffic. The controller is adapted to implement a CRM therapy based on the signal indicative of the nerve traffic. Other aspects are provided herein.
Aims We investigated the applicability of the Ventricular Capture Control (VCC) and Atrial Capture Control (ACC) algorithms for automatic management of cardiac stimulation featured by Biotronik pacemakers in a broad, unselected population of pacemaker recipients. Methods and results Ventricular Capture Control and Atrial Capture Control were programmed to work at a maximum adapted output voltage as 4.8 V in consecutive recipients of Biotronik pacemakers. Ambulatory threshold measurements were made 1 and 12 months after pacemaker implant/replacement in all possible pacing/sensing configurations, and were compared with manual measurements. Among 542 patients aged 80 (73-85) years, 382 had a pacemaker implant and 160 a pacemaker replacement. Ventricular Capture Control could work at long term in 97% of patients irrespectively of pacing indication, lead type, and lead service life, performance being superior with discordant pacing/sensing configurations. Atrial Capture Control could work in 93% of ...
Cardiac rhythm management devices are commonly used for the treatment of arrhythmias specifically superventricular arrhythmias (SVA) and ventricular arrhythmias (VA) and heart failure.
Cardiac Rhythm Management Market Analysis, Size, Trends - Europe - 2019-2025 - MedSuite Cardiac Rhythm Management Market Analysis, Size, Trends - Europe - 2019-2025 - - Market research report and industry analysis - 12771961
A 77-year-old woman, with an otherwise good clinical status, was admitted to the hospital for syncope. An electrocardiogram (ECG) revealed second-degree atrioventricular block with good ventricular response. Twelve hours later, she experienced a second episode of syncope and the ECG revealed atrioventricular block with pauses ,3seconds; she underwent placement of a temporary pacemaker (TP) after cannulation of right subclavian vein and insertion of a lead that appeared to pace right ventricle. An X-ray showed the TP lead following the outer curvature of the heart to the apex (Figure A). An intracardiac ECG recorded complexes compatible with right ventricular epicardial pacing (Figure B). Intracardiac ECG is a recording of the patients electrical activity that uses TP leads (proximal V1 and distal V2). Thus, the patients own rhythm must be conserved and he or she must not be completely dependent on the pacemaker. Negative QRS deflection indicates an endocardial site; positive-negative ...
A heart pacemaker system has an electrode line with a proximal end which is introduced into a connector of the pacemaker housing, and a distal end having an electrode head attachable to the heart of a user. One or more of the distal or proximal ends of the electrode line, the connector, or a region of the electrode line are provided with a component consisting of shape-memory metal. These components have a first shape at temperatures different from body temperature, and assume a second shape when at body temperature. The shape-memory metal component, if disposed at the proximal end of the electrode line or at the connector, is arrnaged to provide a firm mechanical and electrical connection of the electrode line with the pacemaker housing upon the change of shape of the component. The shape-memory metal component, if disposed at the distal end, is arranged to assist in providing, either directly or indirectly, a reliable, mechanical and electrical connection of the electrode line to the heart upon the
A cardiac rhythm management device includes a dual chamber pacemaker especially designed for treating congestive heart failure. The device incorporates a programmed microcontroller which is operative to adjust the pacing mode-AV delay of the pacemaker so as to achieve optimum hemodynamic performance. Atrial cycle lengths measured during transient (immediate) time intervals following a change in the mode-AV delay are signal processed and a determination can then be made as to which particular configuration yields optimum performance.
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Patient Temperature Management Devices Market report focuses on the major drivers and restraints for the key players. It also provides granular analysis of the market share, segmentation, revenue forecasts and geographic regions of the market. The Patient Temperature Management Devices Industry research report is a professional and in-depth study on the current state of the Patient Temperature Management Devices Industry.
TY - CONF. T1 - ATP and prevention pacing to reduce AF burden in pacemaker patients. AU - McMahon, Lorraine. AU - Breen, Cathal. PY - 2020/9/27. Y1 - 2020/9/27. N2 - Background/Objectives: Pacemakers detect subclinical atrial fibrillation that may be a predictor of risk of stroke. Evidence for the efficacy of algorithms for prevention and treatment of atrial fibrillation is controversial. The aim is to systematically review current evidence on the efficacy of atrial anti-tachycardia pacing (a-ATP) and atrial prevention (APP) algorithms in the reduction of atrial fibrillation (AF) burden in patients with implantable dual chamber pacemakers.Methods: Systematic searches were made using electronic databases: Scopus and Medline Ovid using the keywords: atrial anti-tachycardia pacing, atrial ATP, pacemaker, DDD, atrial fibrillation, AF, atrial flutter, advisa, enrhythm, atrial therapy, atrial preference pacing. Secondary hand searches were performed using the reference lists of relevant articles. ...
A dual chamber pacemaker and method for ventricular rate smoothing during high rate episodes such as atrial fibrillation are provided. The pacemaker determines when there is a pathologically high atrial rate episode, such as by determining when atrial senses correspond to a spontaneous atrial rate above a predetermined upper rate limit. When such an episode is determined, the pacemaker determines a ventricular pacing escape interval, corresponding to a flywheel rate, the flywheel rate being set at the beginning of the episode to substantially equal the atrial rate just before the high rate episode. As long as the episode continues, the flywheel rate is incremented upward whenever a ventricular sense occurs, thereby following the average ventricular rate; whenever the flywheel escape interval times out and a ventricular pace is delivered, the flywheel rate is decremented. By allowing ventricular senses and pacing only after timeout of an escape interval which substantially equals average ventricular rate
Name: Dr Munmohan Virdee, specialty: Cardiology , subspecialty: Cardiac devices ,Devices: cardiac resynchronisation therapy device (CRT) ,Devices: dual chamber pacemaker insertion ,Devices: implantable cardioverter defibrillator (ICD) ,Devices: single chamber pacemaker insertion ,Electrophysiology ,Electrophysiology complex cardiac ablation ,Electrophysiology intervention ,Electrophysiology simple cardiac ablation
A cardiac rhythm management system detects edema. In response to an episode of detected edema, it initiates or adjusts a cardiac resynchronization therapy and/or a cardiac contractility modulation (CCM) therapy.
Old people are prone to heart diseases. As such, the expanding base of geriatric populationis foreseento bolster the growth for global implantable cardiac rhythm management device market
Anesthesia & Analgesia: November 2016 - Volume 123 - Issue 5 - p 1143-1148. AUTHORS: Williams, Matthew R. MD et al. BACKGROUND: Radiofrequency identification (RFID) detection systems are used to detect retained surgical sponges and may cause electromagnetic interference (EMI), altering intended function of cardiac pacing systems. Three pediatric patients requiring temporary pacing for postoperative atrioventricular block experienced transient inhibition of ventricular pacing during the use of RFID detection system. Bench testing was performed to evaluate the mechanism of pacemaker inhibition.. METHODS: Impedance of temporary pacing wires was obtained using a pacing system analyzer. Temporary pacemakers (Medtronic 5388, Medtronic 5392, and Biotronik Reocor D) at nominal settings (VVI 120 bpm, output 10 mA) were attached at the ventricular terminal to temporary pacing wires and a resistor for sham impedance in physiologic range. An RFID detection system and wand (RF Assure, model 200) or mat was ...
GlobalDatas new report, EU5 Cardiac Rhythm Management Market Outlook to 2020, provides key market data on the EU5 Cardiac Rhythm Management Market. The report provides value, in millions of US dollars, and volume (in units) and average price data (in US dollars), within market categories - Cardiac Resynchronisation Therapy (Defibrillators and Pacemakers), Implantable Cardioverter Defibrillators, Implantable Loop Recorders and Pacemakers.. The report also provides company shares and distribution shares data for the market category, and global corporate-level profiles of the key market participants, pipeline products, and news and deals related to the Cardiac Rhythm Management Market wherever available.. The data in the report is derived from dynamic market forecast models. GlobalData uses epidemiology and capital equipment-based models to estimate and forecast the market size. The objective is to provide information that represents the most up-to-date data of the industry possible.. The ...
BACKGROUND:Cardiac device infection (CDI) is a serious complication of cardiovascular implantable electronic device (CIED) implantations. Many risk factors have been identified, but several are still uncertain. This study aimed to identify and evaluate the risk factors. Moreover, an infection control protocol (ICP) was carried out, and its efficacy in reducing CDIs was investigated. MATERIAL AND METHODS:A total of 1259 patients who received permanent pacemaker (PPM) implantations were enrolled in this study in a 3-year period in a high-volume center and low-volume centers in the central area of Shaanxi Province, China. Follow-up data of all enrolled patients were collected. The risk factors for CDIs were identified and analyzed. The ICP was adopted in the low-volume centers. Data, including CDI rates, medical costs, and microbiology, were collected and compared. RESULTS:Male gender, diabetes, CKD, operation duration, PPM replacement, and low center volume were identified as the risk factors for CDIs.
Global CRM Devices Batteries Market: Overview Irregular heartbeats, also known as arrhythmias, are often treated using cardiac rhythm management (CRM) devices. CRM devices are powered by batteries that help in regularizing heart beats in a regular rhythm. Currently, batteries, especially lithium anode batteries with different cathode chemistry, are used for powering CRM devices. The growing…
Name: Dr John Foran, specialty: Cardiology ,General (internal) medicine , subspecialty: Cardiac MRI ,Coronary angiography ,Devices: cardiac resynchronisation therapy device (CRT) ,Devices: dual chamber pacemaker insertion ,Devices: implantable cardioverter defibrillator (ICD) ,Devices: single chamber pacemaker insertion ,Echo/imaging ,Electrophysiology ,Electrophysiology complex cardiac ablation ,Electrophysiology intervention ,Electrophysiology simple cardiac ablation ,Fractional flow reserve (FFR) ,Interventional cardiology ,Percutaneous coronary intervention with/without stenting ,Reporting of echocardiography ,Stress echocardiography ,Stroke medicine ,Trans-oesophageal echocardiography ,Transthoracic echocardiography
In 2010, the European market for cardiac rhythm management, electrophysiology, and ablation devices was valued at over €2.3 billion ($3.09 billion).
Netherlands Cardiovascular Devices Market Outlook to 2022 - Cardiac Rhythm Management, Interventional Cardiology, Peripheral Vascular Devices, Electrophysiology, Prosthetic Heart Valves and Others is a market research report available at US $5995 for a Single User PDF License from RnR Market Research Reports Library.
The Report Denmark Cardiovascular Devices Market Outlook to 2018 - Cardiac Rhythm Management, Interventional Cardiology, Peripheral Vascular Devices, Electrophysiology, Prosthetic Heart Valves and Others provides information on pricing, market analysis, shares, forecast, and company profiles for key industry participants. - MarketResearchReports.biz
Canada Cardiovascular Procedures Outlook to 2025 - Cardiac Assist Procedures, Cardiac Rhythm Management (CRM) Procedures, Cardiovascular Surgery Procedures, Clot Management Procedures and Others Canada Cardiovascular - Market research report and industry analysis - 11791288
The market research report 2013 2028 Report On Global Cardiac Rhythm Management Crm Devices Market comprises of market growth, trends, forecasts, key competitor analysis and new business opportunities.
ICD-10-PCS. PACEMAKERS. Insertion or Replacement of Other (RA and RV) Lead. 37.71. Initial insertion of transvenous lead (electrode) into ventricle. ICD-9-CM. ICD-10-PCS. Implantation or Replacement of CRT-P Generator Only. 00.53. Implantation or replacement of cardiac resynchronization pacemaker, pulse 2015 procedure code crosswalk: icd-9-cm to icd-10-pcs - Medtronic Further inquiries on pacing at the bundle of His should be referred to Medtronic CRHF Office of Medical Affairs. Background pacemaker with transvenous electrode(s); atrial. Because the The ICD-10-PCS procedure coding would include both a generator insertion code and the appropriate number of codes for insertion pacing at the bundle of his - Medtronic ICD-9-CM. ICD-10-CM/PCS. 37.87. Replacement of any type pacemaker device with dual-chamber device. 0JH606Z. Insertion of pacemaker, single chamber into chest Replacement of transvenous atrial and/or ventricular lead(s). (electrode). 02H63JZ. Insertion of pacemaker lead into right ...
TY - JOUR. T1 - Echocardiographic localization of an inadvertently placed pacing catheter in the left ventricle. AU - Loungani, R. R.. AU - Wanat, F. E.. AU - Nanda, N. C.. AU - Finch, A.. PY - 1993/1/1. Y1 - 1993/1/1. N2 - This report describes a patient in whom a permanent transvenous pacemaker lead was placed unintentionally across the atrial septum and retained in the left ventricle for nearly 11 years before the error was recognized. A 12- lead electrocardiogram showed paced complexes with right bundle branch block configuration. This appearance raised suspicion that the pacemaker electrode might be in the left ventricle and this was confirmed by two-dimensional echocardiography. Two-dimensional echocardiography is useful for the diagnosis of pacing lead malplacement and should be performed in any patient who develops right bundle branch block pattern on the surface electrocardiogram following pacemaker implantation.. AB - This report describes a patient in whom a permanent transvenous ...
Pacemaker implantation complication rates in elderly and young patients Kazim Serhan Özcan, Damirbek Osmonov, Servet Altay, Cevdet Dönmez, Ersin Yildirim, Ceyhan Türkkan, Baris Güngör, Ahmet Ekmekçi, Ahmet Taha Alper, Kadir Gürkan, Ä°zzet ErdinlerDepartment of Cardiology, Siyami Ersek Cardiovascular and Thoracic Surgery Center, Istanbul, TurkeyAims: To evaluate the complication rate differences between elderly and younger patients who receive a permanent pacemaker implantation.Methods: We reviewed all cases admitted to our institution between January 2008 and June 2009 with symptomatic bradyarrhythmia for whom a permanent pacemaker was implanted. Beginning in June 2009, we prospectively collected data from all patients with the same diagnosis and procedure. The frequency of complications due to the pacemaker implantation procedure was evaluated and compared between young (<70 years old) and elderly (≥70 years old) patients.Results: Among 574 patients with a
Abbott recieved CE mark approval for Gallant implantable cardioverter defibrillator (ICD) and cardiac resynchronization therapy defibrillator (CRT-D) in EU.
Broadway star Nick Corderos doctors gave the former Blue Bloods actor a temporary pacemaker due to an irregular heart rate while he fights COVID-19, the respiratory illness caused by the coronavirus. Corderos wife, Amanda Kloots, shared the update in her Instagram Story Friday, assuring fans the [...]
QRS axis -60 Interpretation: Sinus rhythm sensed by a dual chamber pacemaker with ventricular capture. A-V interval 0.19 sec. Normal pacemaker function (atrial sensing, ventricular pacing). The patient complained of dizziness and lightheadedness. Her electrocardigram showed second degree A-V block Mobitz type II, left anterior fascicular block and right bundle branch block. Dual chamber pacemaker (DDDR) has been implanted with resolution of symptoms.
Early buyers will receive 10% customization on reports.. The nanotechnology-based medical devices market witnessed healthy growth during the last decade primarily attributed to the rising aging population and increasing government support, globally. However, high costs and time-consuming product approval processes of the nanotechnology-based medical devices are inhibiting the growth of this market to a certain extent.. In this report, the nanotechnology-based medical devices market is divided on the basis of products, applications, and regions. On the basis of products, the market is categorized into biochips, implantable materials, medical textile and wound dressing, active implantable devices, and others. The implantable materials segment is bifurcated into dental filling materials and bone restorative materials; while the active implantable devices segment is bifurcated into cardiac rhythm management devices, hearing aid devices, and retinal implants. On the basis of applications, the ...
Global Airway Management Devices Market report details the aggressive market conditions based on producing volume, sales, and earnings. The Airway Management Devices report handles the distribution chain analysis of high Key players. Even the global Airway Management Devices market achievement into your worldwide scale is going to end in inventive business goals and advantages. Moreover, the business arena perspective, solution specs, and applications shed light on the worldwide Airway Management Devices report. In addition, the Airway Management Devices analyses promote participation of every single and every region and Airway Management Devices players. The import/export information, purchaser quantity, Airway Management Devices fabricating potential, and selling price investigation additionally given from the Airway Management Devices current market.. The elaborated information about the key contenders along with, the global Airway Management Devices market report economically provides advice ...
Cardiovascular implantable electronic devices include pacemakers and cardioverter-defibrillators. Remote monitoring systems provide physicians with information from the implantable cardiac devices with little time delay.
The pacemaker system includes the pacemaker itself and wires that connect the pacemaker to the heart. The pacemaker unit is slightly larger than a mans wristwatch and contains a battery and computer circuits (Figure 1). The computer circuits perform the functions of monitoring the patients underlying heart rhythm and delivering an electrical signal to cause the heart to beat at the desired rate. Many pacemakers implanted today also may have rate responsiveness features that allow temporary pacing of the heart at faster rates during periods of exercise. Single-chamber pacemakers have only one wire connected to the heart and dual chamber pacemakers have wires to both the top and bottom chambers of the heart (Figure 2). Your cardiologist will recommend which type of pacemaker is needed. The pacemaker is implanted by a minor surgical procedure performed under local anesthesia. The wires are placed through a blood vessel beneath the collar bone and positioned in the heart under x-ray. The wires are ...
Objective: The aim of this study was to compare the requirement for temporary and permanent pacemaker insertion and the incidence of the problems regarding the rhythm following heart transplantation with the bicaval or biatrial technique in the early postoperative period.Methods: Sixty-one patients underwent orthotopic heart transplantation between the dates of September 1989 and December 2008 in our clinics were included to the study. The study was designed as retrospective analysis, and all data were collected from hospital records. The transplantation was performed by using standard biatrial method in 28 of the patients, by using bicaval anastomosis method in 33 of the patients. Statistical analyses were performed using Chi-square, Fischers exact and Mann-Whitney U tests. Predictors of temporary and permanent pacemaker insertion were analyzed using logistic regression analysis.Results: In the biatrial group, the temporary pacemaker requirement (p|0.05), left bundle branch block (LBBB) (p|0.01) and
Temporary pacing was required in 28% (n=43) of the population, mainly those with CAVB, of whom 53% (n=23) required permanent pacemaker implantation.. Patients in whom bradyarrhythmia was resolved without need for pacemaker implantation were significantly more likely to present renal failure (24 vs. 5; p=0.001). Most patients who did not need pacemaker implantation had hypertension (Table 1).. Four patients died during hospitalization, three before pacemaker implantation and one after. No deaths were recorded in patients after discharge without pacemaker implantation.. Discussion. In this population, most patients required pacemaker implantation after iatrogenic drug discontinuation and/or correction of potentially reversible causes of bradyarrhythmias.. The proportion of patients with atrioventricular block who discontinue drug therapy and still need pacemaker implantation is unknown, as is the prognosis of these patients after hospital discharge without a pacemaker.2 There are few data on the ...
Looking for sick sinus syndrome? Find out information about sick sinus syndrome. 1. inclined or likely to vomit 2. a. suffering from ill health b. : the sick 3. a. of, relating to, or used by people who are unwell b. : sickbed 4. Explanation of sick sinus syndrome
Abstract. Expanded indications for cardiac resynchronization therapy and the increasing incidence of cardiac implantable electronic device infection have led to an increased need for coronary sinus (CS) lead extraction. The CS presents unique anatomical obstacles to successful lead extraction. Training and facility requirements for CS lead extraction should mirror those for other leads. Here we review the indications, technique, and results of CS lead extraction. Published success rates and complications are similar to those reported for other leads, although multiple techniques may be required. Re-implantation options may be limited, which should be incorporated into pre-procedural decision making.. Link to abstract on PubMed. ...
The current study provides an updated contemporary epidemiology of the microbiology of CIED infections requiring extraction. It is the largest report to date on this topic and used multiple sources for microorganism cultures including lead or lead material, blood, pocket tissue, and pocket swab cultures. There were multiple observations with direct implications for clinical practice and patient management.. This topic is becoming increasingly relevant in clinical practice due to an increase in the number of CIED implants but, most important, due to increase in CIED infections (2,3). In fact, the longevity of patients with cardiac disease has increased and the number of system revisions or upgrades that a patient would require in a lifetime will increase in parallel. The risk of a CIED infection, a time-dependent variable, would likely follow a similar trend and the rates of CIED infections have indeed shown a disproportionate trend to increasing CIED implants (2,3). CIED infections carry not ...
TY - JOUR. T1 - An infant with seizure-related bradycardia and asystole. AU - Venugopalan, P.. AU - Nair, P. M C. AU - Koul, R. L.. PY - 2001. Y1 - 2001. N2 - We describe an infant girl with ictal bradycardia and asystole who died during an episode of seizure, despite anti-epileptic therapy and permanent cardiac pacemaker implantation. The mechanism of ictal bradycardia and the need to recognize it are therefore discussed. Timely cardiac intervention and adequate anticonvulsant therapy are essential for successful management.. AB - We describe an infant girl with ictal bradycardia and asystole who died during an episode of seizure, despite anti-epileptic therapy and permanent cardiac pacemaker implantation. The mechanism of ictal bradycardia and the need to recognize it are therefore discussed. Timely cardiac intervention and adequate anticonvulsant therapy are essential for successful management.. KW - Asystole. KW - Autonomic seizure. KW - Ictal bradycardia. KW - Pacemaker. UR - ...
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See on Scoop.it - Transparenc Market Research [92 Pages Premium Report] Pain Management Devices Market (Electrical Stimulators, Radiofrequency Ablation, Analgesic Pumps, Neurostimulation Devices) - Global Industry Analysis, Size, Share, Growth, Trends and Forecast, 2012 - 2018 - Pain Management...Transparency Market Researchs insight:Market Research Reports : Transparency Market Research published new market report Pain Management Devices…
Our Abbotts Assurity and Endurity Implantable Pacemaker Injury and Wrongful Death Lawsuit Lawyers fight hard for compensation on behalf of our clients.
TY - JOUR. T1 - An innovative application of anatomic electromagnetic voltage mapping in a patient with Ebsteins anomaly undergoing permanent pacemaker implantation. AU - Kloosterman, E. Martin. AU - Yamamura, Kenneth. AU - Alba, Julia. AU - Mitrani, Raul D.. AU - Myerburg, Robert J.. AU - Interian, Alberto. PY - 2000/1/1. Y1 - 2000/1/1. N2 - Anatomic Electromagnetic Voltage Mapping. A novel application of the Biosense CARTO System anatomic electromagnetic voltage mapping is presented, utilized as a guide for permanent pacemaker placement. The technique is illustrated in the successful implantation of an atrial lead in a patient with Ebsteins anomaly characterized by a severely dilated right atrium and extremely low-amplitude voltage signals, requiring a DDD pacemaker. Electromagnetic voltage mapping can be used in selected patients with structural heart disease to determine the optimal site for permanent pacemaker lead placement.. AB - Anatomic Electromagnetic Voltage Mapping. A novel ...
Several studies have identified characteristics associated with CIED infections. In a single-center case-control study,18 case subjects were more likely to have diabetes mellitus and heart failure and to have undergone generator replacement; renal dysfunction (glomerular filtration rate ,60 mL · min−1 · 1.72 m−2) had the strongest (odds ratio [OR] 4.8) association with CIED infection. Renal dysfunction was also associated with risk of CIED infection in a more recent nested case-control investigation.19 In addition, Lekkerkerker et al19 identified oral anticoagulant use as an associated risk factor for infection. In another single-center case-control study, 29 patients with PPM infection were included, and long-term corticosteroid use (OR=13.9) and the presence of more than 2 pacing leads (OR=5.41) were identified as independent correlates of device infection.20. In addition to patient factors, procedural characteristics may also play an important role in the development of CIED infection. ...
Use of anti-programmed cell death-1 (anti-PD-1) has been successful in treating many types of cancers. Despite its promising efficacy, immune-related adverse events are still a major concern. Immune-related cardiotoxicity, which is rare but fatal, has recently become a focus of attention. Cardiotoxicities including myocarditis, cardiomyopathy, cardiac fibrosis, heart block and cardiac arrest have been reported. Of these toxicities, myocarditis is often accompanied by dysrhythmia. The presentation of sick sinus syndrome as an immune-related adverse event has not yet been reported. Here, we reported the first case of sick sinus syndrome, a rare toxicity induced by anti-PD-1. A 42-year-old male patient who had metastatic hepatocellular carcinoma failed treatment with sorafenib. Pembrolizumab at a fixed dose of 100 mg every three weeks was given. His heart rate gradually slowed down and he presented sick sinus syndrome with a lowest heart rate of 38 bpm after six cycles of pembrolizumab. He denied chest
Bradyarrhythmias occur commonly in the ICU, and most events do not necessitate temporary pacing. Transient bradycardia often occurs in the setting of enhanced vagal tone due to tracheal irritation, suction, or intubation; abdominal distention; or severe vomiting. Reversible causes such as severe electrolyte or acid-base imbalances should be corrected first whenever possible, as this may obviate the need for pacing or enhance the likelihood that a temporary lead will function appropriately when placed. Isolated sinus pauses, transient extended pauses in atrial fibrillation (AF), and nocturnal bradycardia in patients with obstructive sleep apnea are all common, and generally do not require temporary pacing. Pacing is considered when patients are having symptoms or have developed hemodynamic compromise thought to be secondary to a bradyarrhythmia, or if a rhythm is detected that is associated with a high risk of subsequent malignant bradyarrhythmia (Table 103-1). Recognizing circumstances that ...
OBJECTIVE: Angina and the presence of myocardial ischaemia are common in hypertrophic cardiomyopathy. Dual chamber pacing results in clinical improvement in these patients. This study evaluates the effects of permanent dual chamber pacing on absolute regional myocardial perfusion and perfusion reserve. SETTING: University hospital. PATIENTS AND DESIGN: Six patients with hypertrophic cardiomyopathy and severe symptoms of angina received a dual chamber pacemaker. Absolute myocardial regional perfusion and perfusion reserve (dipyridamole 0.56 mg/kg) were measured by dynamic positron emission tomography with 13N-ammonia both during sinus rhythm and 3 months after pacemaker insertion. Results were compared with those from 28 healthy volunteers. RESULTS: Pacing resulted in a reduction of anginal complaints and a reduction in intraventricular pressure gradient from 65 (SD 30) mm Hg to 19 (10) mm Hg. During sinus rhythm, baseline perfusion was higher in patients with hypertrophic cardiomyopathy than ...
There are many challenging infectious disease questions in diagnostic radiology where 18F-FDG PET/CT may be a practical and useful solution.1,2 One of them i...
Pacemaker implantation and coronary angiography to treat sick sinus syndrome (sss) (costs for program #134425) ✔ University Hospital Giessen UKGM ✔ Department of Pediatric Cardiology and Congenital Heart Defects ✔ BookingHealth.com
Pacemaker implantation and coronary angiography to treat sick sinus syndrome (sss) (costs for program #82457) ✔ University Hospital Düsseldorf ✔ Department of Cardiology, Pneumology and Angiology ✔ BookingHealth.com
Looking for online definition of epicardial lead in the Medical Dictionary? epicardial lead explanation free. What is epicardial lead? Meaning of epicardial lead medical term. What does epicardial lead mean?
Background In patients with isolated SSS, who need pacemaker treatment, any pacemaker can be used to treat the symptomatic bradycardia: a single chamber atrial (AAI) pacemaker, a single chamber ventricular (VVI) pacemaker, or a dual chamber (DDD) pacemaker. In the USA and in most European countries, DDD pacing is used in most cases. It is now known from the Danish AAI/VVI trial, that AAI pacing is superior to VVI pacing, since VVI pacing is associated with a higher mortality and a higher incidence of atrial fibrillation, thromboembolic complications and heart failure. This confirms previous findings in observational studies. Therefore, VVI pacing should no longer be used in patients with SSS.. The main argument for using DDD pacing is the concern, that the patients will develop symptomatic atrioventricular (AV) block. In the Danish AAI/VVI trial, the risk of AV block was approximately 0.6% per year, which is equivalent to the risk found in a larger meta analysis. This is only a little higher ...
The focus of this thesis is the development and application of personalised computational models of cardiac electromechanics to understand and ultimately inform cardiac resynchronisation therapy (CRT). To achieve this goal, a semi-automatic pipeline for the generation and parameterisation of detailed biophysically based models using clinical data is presented and applied to a cohort of patients. Specifically, an anatomically based finite element model has been developed and applied to simulate cardiac electromechanics through the coupling of the monodomain and large deformation mechanics governing frameworks. Techniques have been implemented for tting high order representations of cardiac anatomy from MRI data, and myocardial conductivity, sti ness, contractility and boundary conditions from endocardial activation recordings and pressure volume loops respectively. Embedding these tting steps within a semi-automatic pipeline, this personalisation work ow has been applied to four CRT patient data ...
Coronary venous anatomy is visualised prior to cardiac resynchronisation therapy (CRT) using a designated computed tomography angiography (CTA) …
A self-diagnostic system for an implantable cardiac device such as a pacemaker, cardioverter, or resynchronization device which utilizes a subcutaneous ECG channel is described. The subcutaneous ECG channel allows the device to, in real time and independent of the standard pacing and sensing circuitry, verify the presence of pacing spikes, chamber senses, and other device outputs and hence establish and verify device integrity.
Spain Clot Management Devices Market Overview and Procedures. Research Beam added a report on Spain Clot Management Procedures Outlook to 2021. Spain Clot Management Procedures Outlook to 2021. Summary. ResearchBeam new report, Spain Clot Management Procedures Outlook to 2021, provides key procedures data on the Spain Clot Management Procedures. The report provides procedure volumes within market segment - Peripheral Venous Thrombectomy Procedures (Deep Vein Thrombosis (DVT) Thrombectomy Procedures and Pulmonary Embolism (PE) Thrombectomy Procedures).. The epidemiology-based forecasting model makes use of epidemiology data gathered from research publications and primary interviews with physicians to establish the target patient population and treatment flow patterns for individual diseases and therapies. Using prevalence and incidence data and diagnosed and treated population, the epidemiology-based forecasting model arrives at the final numbers.. Extensive interviews are conducted with key ...
This research service studies qualitative and quantitative aspects of the non - invasive ventilation and associated airway management devices markets in Europe. The study includes ventilators used in home care and hospital settings like CPAP devices, Bile
Regarding cybersecurity vulnerabilities identified in a wireless telemetry technology used for communication between Medtronics implantable cardiac devices, clinic programmers, and home monitors.
A systematic review was conducted according to PRISMA guidelines [ 17 ]. Medline, Embase, and Web of Science databases were searched from February
Dr. Sabas clinical interest and expertise have focused on the management of arrhythmias and conduction abnormalities of the heart. He has wide experience in implanting and managing all cardiac implantable electronic devices (CIED), including pacemakers, defibrillators, and cardiac resynchronization therapy devices. He also has expertise in ablation procedures of ventricular and supraventricular arrhythmias including atrial fibrillation and ischemic ventricular tachycardia. In addition, Dr. Saba is nationally recognized for his expertise in CIED lead management, including lead extractions ...
TY - JOUR. T1 - Safety and outcomes of magnetic resonance imaging in patients with abandoned pacemaker and defibrillator leads. AU - Higgins, John V.. AU - Gard, Joseph J.. AU - Sheldon, Seth H.. AU - Espinosa, Raul E.. AU - Wood, Christopher P.. AU - Felmlee, Joel P.. AU - Cha, Yong Mei. AU - Asirvatham, Samuel J.. AU - Dalzell, Connie. AU - Acker, Nancy. AU - Watson, Robert E.. AU - Friedman, Paul A.. PY - 2014/10/1. Y1 - 2014/10/1. N2 - Introduction Abandoned cardiovascular implantable electronic device (CIED) leads remain a contraindication to magnetic resonance imaging (MRI) studies, largely due to in vitro data showing endocardial heating secondary to the radiofrequency field. We tested the hypothesis that abandoned CIED leads do not pose an increased risk of clinical harm for patients undergoing MRI.Methods This single-center retrospective study examined the outcomes of patients who had device generators removed before MRI, rendering the device leads abandoned. Information was gathered ...
Overview of Pacemakers and Implantable Cardioverter Defibrillators (ICDs) in Children What is an implanted pacemaker? An implanted pacemaker is a small device that is implanted under the skin and sends electrical signals to start or regulate a slow heartbeat. An implanted pacemaker may be used to stimulate the heartbeat if the hearts natural pacemaker (the sinoatrial, or SA, node) is not functioning properly, has developed an abnormally slow heart rate or rhythm, or if the electrical pathways are block...
doctors for pacemaker implantation in Hyderabad, find doctors near you. Book Doctors Appointment Online, View Cost for Pacemaker Implantation in Hyderabad | Practo
UAB Baltikameda started its activities in 2017 and acts in the Baltic States.. The mission of our company is to introduce and supply the latest medical technologies in the region. We provide our Health Care Institutions and centers with the cutting edge medical equipment, instruments and devices.. ...
Aims. Single-pass VDD is a physiological stimulation mode which requires a single-lead with a floating dipole to detect the atrial signal. We investigated the impact of right heart dimensions on immediate and long-term atrial sensing stability in VDD systems to draw guidelines for optimal atrial sensitivity programming.. Methods. Forty-one patients (23 males, mean age 73±11 years) with II or III degree AV block and normal sinus node function received a Thera VDD Medtronic 8948 pulse generator with Medtronic 5032 lead. Atrial sensing was evaluated at pre-discharge and during 12-months follow-up in the supine and upright positions, during normal and forced breathing. Atrial sensing variability, quantified by a D value (mV), which represents the difference between the maximum and the minimum atrial electrogram amplitude obtained during the various activities, was analyzed and related to right heart dimensions measured at echocardiography.. Results. Long-term appropriate atrial sensing was obtained ...
A super-small, implantable cardiac device that gets its power from radio waves transmitted from outside the body has been developed by a team of engineers.
NGB: Generic Pacemaker code; code used to describe pacemaker functions. Usually 3 or four letters. DDDR is a common code for pacemakers and ICDs. The first letter signifies the chamber paced. V means Ventricle, A is Atrium, D is both or Dual, O is none and occasionally S is used by some manufacturers to mean Single. The second letter indicates the chamber that is sensed (the ICD/ pacemakers detection of electrical activity). The third letter indicates the pacers response to sensing; T means it will trigger pacing, I means it will inhibit pacing D means it will do both inhibiting and triggering, and O means none. The fourth letter is for programmability functions-Rate responsiveness. P is simple Programmable; M is Multiprogrammable; C is Communicating functions (telemetry); and R is Rate Responsive. If a fourth letter is present it is usually rate responsive. Therefore, a pacemaker or ICD that is DDDR means the pacemaker is pacing electrical activity in both the atrium and the ventricle and it ...
An analysis of the NIS demonstrates that during the study period 1993 to 2008, the national CIED infection burden increased. Specifically, there was an increase in the incidence of CIED infection along with an increase in inpatient mortality. Current patients have a high number of clinical comorbidities associated with prolonged hospital stays and an increase in the utilization of medical resources reflected by an increase in hospital charges.. Over the past 20 years, the number of patients with CIEDs has dramatically increased (1-3). Among Medicare beneficiaries, the rate of cardiac device implantation increased by 42% between 1990 and 1999 (10). Our initial analysis of NIS data, which included patients with all types of insurance coverage, showed a 30% increase in the primary pacemaker implantation rate of 50.0 per 100,000 persons of population in 1993 to 65.1 per 100,000 in 2006 (1). ICD implantation rate increased more rapidly during this period of time. In 1993, the ICD implantation rate ...
At a quick glance, you will immediately notice that there seemed to be no association between the P and QRS. So, you will jump into the conclusion that this is complete heart block (CHB) or third degree AV block. However, for CHB the RR interval MUST BE REGULAR. It is because supraventricular impulses are blocked and the ventricles are depolarized by either a junctional or ventricular pacemaker and they generate a regular RR to interval. In the case presented, the RR interval is irregular. Thus, we can conclude that SOME OF THE IMPULSES were able to conduct to ventricles. R3 and R6 are captured beats or sinus beats that were conducted to the ventricles (PRI of about 0.40 sec). Hence, this is not complete heart block. This is called HIGH-GRADE or ADVANCED SECOND-DEGREE AV BLOCK. ...
Animal-handling procedures followed guidelines of the National Institutes of Health and were approved by the Animal Research Ethics Committee of the Montreal Heart Institute. Fifteen mongrel dogs (28 to 38 kg) were anesthetized with ketamine (5.3 mg/kg IV), diazepam (0.25 mg/kg IV), and halothane (1.5%). Unipolar pacing leads were inserted into the right ventricular apex and right atrial (RA) appendage under fluoroscopic guidance and were connected to pacemakers (Vitatron) in subcutaneous pockets in the neck. Atrioventricular block was created by radiofrequency catheter ablation to avoid excessively rapid ventricular responses during atrial tachypacing. The right ventricular demand pacemaker was programmed to 80 bpm. After 24-hour recovery, 7-day atrial tachypacing at 400 bpm was instituted.. Results in 5 atrial tachypaced dogs with GGA treatment were compared with 5 tachypaced dogs without GGA treatment and 5 nonpaced control dogs. GGA was given orally (120 mg/kg per day), starting 3 days ...
BACKGROUND: Rates of pregnancy post heart transplantation (HT) are increasing. Cesarean delivery (CD) rate post HT is 30%.1 Reports of anesthetic management of these patients are rare. We report the anesthetic management of CD in a patient post HT and review similar published cases. CASE REPORT: A 36 y G1P0 presented with a history of post viral dilated cardiomyopathy requiring orthotopic HT at age 30. Post-transplant course was complicated by sepsis, acute kidney injury and chronic kidney disease, and bowel resection for ischemic colitis. Graft sinus dysfunction required permanent pacemaker insertion. In pregnancy, the patient had a pulmonary embolus requiring therapeutic anticoagulation. She was admitted at 35+3 weeks gestation for increasing exertional dyspnea and anxiety. Elective CD was performed at 36+2 weeks gestation due to severe patient anxiety. ASA monitors were applied; arterial line was deferred due to poor radial artery perfusion from prior cannulation. Aspiration prophylaxis, ...
The BIOTRONIK sponsored REPLACE study1,2 is the first prospective, multicenter trial to examine a broad range of complications related to replacement of all companies cardiovascular implantable electronic devices (CIED) which includes both pacemakers and ICDs (implantable cardiac defibrillators)
WASHINGTON, DC - New research shows magnetic interference from portable headphones has a clinically significant impact on the function of life-saving devices, according to a new study published in the October edition of the HeartRhythm Journal, the official journal of the Heart Rhythm Society. The study is the largest and most complete of its kind and uncovers a need for greater dialogue between doctors and patients with implanted cardioverter-defibrillators (ICDs) and pacemakers. Read full text of study ». An assessment of multiple portable headphone models in 100 patients revealed magnetic interference that may disrupt the function of ICDs and pacemakers and could potentially lead to life-threatening device malfunction. The study found the magnetic interference from headphones could cause improper arrhythmia detection in ICDs or asynchronous pacing in pacemaker patients. When headphones are placed fewer than 3 cm from the skin, magnetic interference may approach or exceed 10 Gauss, a level ...
TY - GEN. T1 - An FPGA design of generalized low-density parity-check codes for rate-adaptive optical transport networks. AU - Zou, Ding. AU - Djordjevic, Ivan B.. PY - 2016. Y1 - 2016. N2 - Forward error correction (FEC) is as one of the key technologies enabling the next-generation high-speed fiber optical communications. In this paper, we propose a rate-adaptive scheme using a class of generalized low-density parity-check (GLDPC) codes with a Hamming code as local code. We show that with the proposed unified GLDPC decoder architecture, a variable net coding gains (NCGs) can be achieved with no error floor at BER down to 10-15, making it a viable solution in the next-generation high-speed fiber optical communications.. AB - Forward error correction (FEC) is as one of the key technologies enabling the next-generation high-speed fiber optical communications. In this paper, we propose a rate-adaptive scheme using a class of generalized low-density parity-check (GLDPC) codes with a Hamming code as ...
Sick sinus syndrome is a type of abnormal heartbeat, or arrhythmia. If you have sick sinus, you may have episodes when your heart beats very slowly, stops beating for a short while, or beats very rapidly.
Sick sinus syndrome is a type of abnormal heartbeat, or arrhythmia. If you have sick sinus, you may have episodes when your heart beats very slowly, stops beating for a short while, or beats very rapidly.
Sick sinus syndrome is a type of abnormal heartbeat, or arrhythmia. If you have sick sinus, you may have episodes when your heart beats very slowly, stops beating for a short while, or beats very rapidly.
... artificial cardiac pacemaker; RFID; contact lenses; zoom lens; first telephone handset; commercial television; non-stick ... contributed to invention of the cardiac defibrillator and artificial cardiac pacemaker Gordon Gould, invented the laser Mario ... development of the artificial sweetener aspartame; development of nontoxic processes to create food colorings and remove ... oversaw the development of the artificial sweetener aspartame; developed nontoxic processes to create food colorings and remove ...
An investigation showed the ride was operating correctly and was not the cause of his death; he had an artificial pacemaker. On ...
An investigation showed the ride was operating correctly and was not the cause of his death; he had an artificial pacemaker. On ... On November 1, 2014, falling embers from the Wishes fireworks show landed on the artificial grass exterior of the ride, causing ...
The first artificial cardiac pacemaker.. *1955. The first separation operation for conjoined twins. ...
Artificial hip replacement has become more common. Heart pacemakers or valves may be inserted. Many other types of prostheses ...
Examples of such instruments include scalpels, hypodermic needles, and artificial pacemakers. This is also essential in the ...
Following a second attack in 1989, she received an artificial pacemaker. In 1991, after a bout of pneumonia in Mexico, she had ...
New methods for heart surgery were developed, including pacemakers and artificial hearts. Cocaine/crack and heroin were found ... Over time, a massive system of artificial satellites was placed into orbit around Earth. These satellites greatly advanced ...
An artificial cardiac pacemaker can also be installed to control the heartbeat. Other treatments are useful to treat the other ...
The only way to save him is a heart transplant, a battle against time as the body can only survive so long on an artificial ... His only option is a robotically inserted pacemaker. A stroke patient's brain is explored to explain why he had a stroke and ... Doctors battle against time to replace it with an artificial one. Christine has dangerous carbon dioxide levels in her blood, ...
Examples include the artificial heart, artificial heart valve, implantable cardioverter-defibrillator, cardiac pacemaker, and ... In some cases implants contain electronics, e.g. artificial pacemaker and cochlear implants. Some implants are bioactive, such ... The many examples of implant failure include rupture of silicone breast implants, hip replacement joints, and artificial heart ... artificial urinary sphincter and penile implant. Medical devices are classified by the US Food and Drug Administration (FDA) ...
Animat Artificial cardiac pacemaker Deep brain stimulation Patch clamp Bioelectronics Boven, K.-H.; Fejtl, M.; Möller, A.; ... and cardiac pacemakers. Deep brain stimulation (DBS) has been effective at treating movement disorders such as Parkinson's ...
He was subsequently fitted with an artificial pacemaker to help regulate his heartbeat. In a list compiled by the magazine New ... "Benn gets pacemaker after fall". BBC News. 1 October 2005. Archived from the original on 9 November 2005. Retrieved 3 May 2010 ...
He designed and holds the patent on the first implantable atrial synchronous heart pacemaker; he designed a demand circuit ... critical to the controls of the artificial heart; and he pioneered the first remotely programmable computer implantable ...
His most famous invention was likely a control unit for the artificial cardiac pacemaker. The device essentially uses ... It was here that he did much of his pacemaker research. But Boykin subsequently sued CTS for $5 million, asserting that his ... This inspired him to help improve the pacemaker. Boykin attended Booker T. Washington High School in Dallas, where he was the ... His inventions include electrical resistors used in computing, missile guidance, and pacemakers. Otis Boykin was born on August ...
Sachar was suffering from ischemic heart disease and had an artificial cardiac pacemaker implanted. In April 2018, he was ...
Kantrowitz developed an implantable artificial pacemaker together with General Electric. The first of these pacemakers was ... In August 1971, he implanted an artificial heart booster in a 63-year-old man whose weakened heart could not pump sufficient ... Using dogs and other animals as experimental subjects, Kantrowitz developed an artificial left heart, an early version of an ... "Machines in Our Hearts: The Cardiac Pacemaker, the Implantable Defibrillator, and American Health Care", via Google Books. JHU ...
"Alfred E. Mann, entrepreneur behind the rechargeable pacemaker and an artificial retina, dies at 90". Los Angeles Times.com. ... After he left those companies to found Pacesetter Systems, which focused on cardiac pacemakers, he sold that company in 1985 ...
Krusty is illiterate and has an artificial pacemaker which requires him to avoid microwave radiation. When Bart and Lisa visit ...
Feinstein had an artificial cardiac pacemaker inserted at George Washington University Hospital in January 2017. In the fall of ... Dianne Feinstein recovering at home after pacemaker surgery". LA Times. Retrieved January 12, 2017. Fandos, Nicholas (October ...
A temporary artificial pacemaker was applied to Evren while in intensive care due to bradycardia. His large intestine was ...
... of the artificial pacemaker market, but the going got rough. The first spin-off from Medtronic, Cardiac Pacemakers, Inc (CPI), ... The initial commercial artificial pacemaker, under the patent in 1972, used stainless steel as a non-hermetic encasing medium. ... the company that manufactured the world's first lithium battery powered artificial pacemaker. The lithium-iodide cell is now ... and pacemaker consulting specialist. He taught surgeons around the United States in the basics of how pacemakers work, the ...
Earl Bakken, inventor of the first external, battery-operated, transistorized, wearable artificial pacemaker, founder of ...
In 1958, Arne Larsson in Sweden became the first patient to depend on an artificial cardiac pacemaker. He died in 2001 at age ... 86, having outlived its inventor, the surgeon, and 26 pacemakers. Lightweight materials as well as neural prosthetics emerged ...
He founded Medtronic, where he developed the first external, battery-operated, transistorized, wearable artificial pacemaker in ... That surgery often left the children needing to be temporarily attached to a pacemaker. The pacemakers at the time were large ... However, much to his astonishment, when he came in the next day, he found the pacemaker already in use on a patient. (The Food ... Bakken delivered a battery-powered transistorized pacemaker about the size of a few decks of cards to Dr. Lillehei. After ...
Artificial cardiac pacemakers or implantable cardioverter-defibrillators (ICD) are sensitive to very small currents. Pre- ... The shock is required to be administered from inside the skin, directly to the heart i.e. a pacemaker lead, or a guide wire, ...
For example, initial models of the artificial cardiac pacemaker were external support devices that transmits pulses of ... are not required to undergo the same level of testing that higher risk devices such as artificial pacemakers undergo. ... One example of high-risk devices are those with Embedded software such as pacemakers, and which assist in the conduct of ... Medical devices such as pacemakers, insulin pumps, operating room monitors, defibrillators, and surgical instruments, including ...
Third-degree AV block can be treated more permanently with the use of a dual-chamber artificial pacemaker. This type of device ... "Compared to single chamber ventricular pacemakers, dual chamber pacemakers may reduce the incidence of complications in people ... "Prognosis of patients with complete heart block or arrhythmic syncope who were not treated with artificial pacemakers. A long- ... a potential side effect is pacemaker syndrome, and may necessitate use of a biventricular pacemaker, which has an additional ...
... was the first patient to receive an artificial cardiac pacemaker. The first two pacemakers were implanted by Åke Senning in ... Arne lived for another forty-three years and during that time went through twenty-six pacemakers. He died from melanoma on 28 ... Plummer, Chris (July 2006). "Pacemakers: where is the block?" (PDF). Geriatric Medicine. Pavilion Publishing and Media Ltd: 57- ... "The Body", by Bill Bryson, p. 121 https://www.nytimes.com/2002/01/18/world/arne-h-w-larsson-86-had-first-internal-pacemaker. ...
About a third of people with Lyme carditis need a temporary pacemaker until their heart conduction abnormality resolves, and 21 ... frequent use of artificial tears while awake is recommended, along with ointment and a patch or taping the eye closed when ... need a permanent pacemaker and 1% end up with persistent heart block (the actual percentage may be higher because of ...
In May 1989, a charity version of the Gerry and the Pacemakers song "Ferry Cross the Mersey" was released in aid of those ... when artificial feeding and hydration were withdrawn from 22-year-old Tony Bland after nearly four years, during which time he ... The song featured Liverpool musicians Paul McCartney, Gerry Marsden (of the Pacemakers), Holly Johnson, and the Christians, and ... Although Gerry and the Pacemakers' earlier hit "You'll Never Walk Alone" had stronger ties to Liverpool FC, it was not used ...
For the natural pacemaker in the heart, see Cardiac pacemaker.. A pacemaker (or artificial pacemaker, so as not to be confused ... A possible complication of dual-chamber artificial pacemakers is 'pacemaker-mediated tachycardia' (PMT), a form of reentrant ... "Risks - Pacemaker - Mayo Clinic". www.mayoclinic.org. Retrieved 2016-12-01.. *^ a b eMedicine , Pacemaker-Mediated Tachycardia ... "Pacemakers, Patient and Public Information Center : Heart Rhythm Society".. *^ a b "The leadless pacemaker: A new era in ...
"Artificial Genes". TIME. 15 November 1982. Diakses tanggal 17 July 2010.. *^ Bratspies, Rebecca (2007). "Some Thoughts on the ... Gutschi S, Hermann W, Stenzl W, Tscheliessnigg KH (1 May 1973). "[Displacement of electrodes in pacemaker patients (author's ... A broad definition of genetic engineering also includes selective breeding and other means of artificial selection.", Retrieved ...
Artificial pacemaker. *Atrium (heart). C. *Cardiac arrest. E. *Endocardium. *Epicardium. H. *Heart rate ...
Damaged and defective heart valves can be repaired, or replaced with artificial heart valves. Infectious causes may also ...
Artificial cardiac pacemaker. *Implantable cardioverter-defibrillator. ReferencesEdit. *^ a b BBC News:'Button battery' warning ...
The normal electrical conduction system of the heart allows electrical impulses generated by the heart's own pacemaker (the ... attributable to moderate to severe mitral valve stenosis or atrial fibrillation in the presence of a mechanical artificial ... but these same people are more likely to need a pacemaker following the procedure.[119] ...
"The treatment of complete heart block by the combined use of a myocardial electrode and an artificial pacemaker". Surg Forum. 8 ... "Pacemakers, Patient and Public Information Center : Heart Rhythm Society".. *↑ Bernstein A, Daubert J, Fletcher R, Hayes D, ... Halperin, Daniel (2008). Pacemakers and Implantable Cardiac Defibrillators: Software Radio Attacks and Zero-Power Defenses (PDF ... Mond H, Sloman J, Edwards R (1982). "The first pacemaker". Pacing and clinical electrophysiology : PACE. 5 (2): 278-82. doi: ...
... such as metal-containing pacemakers[27] ... Artificial intelligence *Applications of artificial ...
Rune Elmqvist (1906-1996) was a physician and medical engineer who developed the first implantable pacemaker as well as the ... Other examples of pioneering innovations are the artificial kidney, which laid the foundations for the multinational company ... Alumni and faculty of Lund University are associated with, among other things: the creation of the first implantable pacemaker ...
Implanted medical devices such as pacemakers could malfunction because of these currents. The radio-frequency field of the ... which can lead to artificial intensity changes of the fMRI signal.[68] ...
This procedure where a device similar to a heart pacemaker that is implanted by a surgeon, with the electrical leads ... Artificial extracorporeal liver support *Bioartificial liver devices. *Liver dialysis. *Hepatectomy. *Liver biopsy ...
... can also be used to temporarily encapsulate a sharp object (such as a helix on a lead for an artificial pacemaker) ...
These devices may also make charging devices like pacemakers easier on the patient rather than having an exposed portion of the ... Transcutaneous Energy Transfer (TET) systems in artificial hearts and other surgically implanted devices. ... For example, what would happen if someone with a pacemaker is inside the vehicle? Another downside is that the technology ...
The cardiac pacemaker cells of the sinoatrial node in the heart provide a good example.[g] Although such pacemaker potentials ... Piccolino M (2000). "The bicentennial of the Voltaic battery (1800-2000): the artificial electric organ". Trends in ... In pacemaker potentials, the cell spontaneously depolarizes (straight line with upward slope) until it fires an action ... Noble D (1960). "Cardiac action and pacemaker potentials based on the Hodgkin-Huxley equations". Nature. 188 (4749): 495-497. ...
Pacemaker cells develop in the primitive atrium and the sinus venosus to form the sinoatrial node and the atrioventricular node ... In this case, the patient's blood is normally diverted to an artificial heart-lung machine to maintain the body's blood supply ... The heartbeat is initiated in the pacemaker regions and spreads to the rest of the heart through a conduction pathway. ... where the faster pacemaker cells driving the self-generated rhythmic firing and responsible for the heart's autorhythmicity are ...
Afferents from these two types of sign-selective neurons then converge at the top of the neuronal hierarchy-the pre-pacemaker ... Video: "Image Processing in the Visual System of the Common Toad - Behavior, Brain Function, Artificial Neuronal Net" ...
Artificial heart. *Biological pacemaker. *Xenotransplantation. References[edit]. *^ a b c Cook JA, Shah KB, Quader MA; et al. ( ... 2015). "The total artificial heart". Journal of Thoracic Disease. 7 (12): 2172-2180. doi:10.3978/j.issn.2072-1439.2015.10.70.. ... Patients who are in need of a heart transplant but do not qualify may be candidates for an artificial heart[1] or a left ... Xenografts from other species and artificial hearts are two less successful alternatives to allografts.[2] ...
... (HE) can be described as the natural, artificial, or technological alteration of the human body in order to ... pacemaker) & organ replacements ( e.g. bionic lenses)), and strength training (weights (e.g. barbells) & dietary supplement)). ... Endogenous artificial nutrition can be similar to having a radioisotope generator that resynthesizes glucose (similarly to ... Exocortex can be defined as a theoretical artificial external information processing system that would augment a brain's ...
The therapeutic range for most adults with a mechanical valve is an INR of 2.5-3.5.[1] Finally, artificial tissue valves will ... The development of the heart-lung machine in the 1950s paved the way for replacement of the mitral valve with an artificial ... The artificial mitral valve has an elevated risk of stroke. Patients with mechanical heart valves who use warfarin for ... and re-suspension of the leaflets with artificial (Gore-Tex) cords. ...
The advent of artificial light has substantially altered sleep timing in industrialized countries.[5] ... The circadian pacemaker in the suprachiasmatic nucleus has a direct neural connection to the pineal gland, which releases the ... people without artificial light might go to sleep far sooner after the sun sets, but then wake up several times throughout the ... Plentiful artificial light has been available in the industrialized West since at least the mid-19th century, and sleep ...
Cardiac pacemaker. *Chronotropic (Heart rate). *Dromotropic (Conduction velocity). *Inotropic (Contractility). *Bathmotropic ( ...
"Artificial Genes". TIME. 15 November 1982. Retrieved 17 July 2010.. *^ Bratspies R (2007). "Some Thoughts on the American ... Gutschi S, Hermann W, Stenzl W, Tscheliessnigg KH (1 May 1973). "[Displacement of electrodes in pacemaker patients (author's ... Humans have altered the genomes of species for thousands of years through selective breeding, or artificial selection[19]:1[20] ... A broad definition of genetic engineering also includes selective breeding and other means of artificial selection.", Retrieved ...
... sometimes to the point that the heart beat stops and requiring pacemaker-based treatment.[8] Other associated problems are ... of those who require artificial ventilation.[8] ...
Artificial hip replacement has become more common. Heart pacemakers or valves may be inserted. Many other types of prostheses ...
... is used in production of heavier actinides and of the 238Pu radionuclide for power sources in artificial pacemakers. It ... a more suitable radioisotope for thermoelectric generators such as in cardiac pacemakers. The alternative routes to 238Pu use ...
This is commonly solved with a Pacemaker unit, providing scar tissue from the original operation does not block its ... to create an artificial stenosis in order to control pulmonary blood pressure; PAB involves placing a band around the pulmonary ...
Constant lead barrel cam in an American Pacemaker lathe. This cam is used to provide a repeatable cross slide setting when ... artificial paper figurines within a revolving lantern, all utilized cam mechanisms.[22] The Chinese hodometer which utilized a ...
A cardiac pacemaker (or artificial pacemaker, so as not to be confused with the natural pacemaker of the heart), is a medical ... A possible complication of dual-chamber artificial pacemakers is pacemaker-mediated tachycardia (PMT), a form of reentrant ... "Risks - Pacemaker - Mayo Clinic". www.mayoclinic.org. Retrieved 2016-12-01.. *^ a b Pacemaker-Mediated Tachycardia at eMedicine ... Hyman himself referred to his invention as an "artificial pacemaker", the term continuing in use to this day.[37][38] ...
A cardiac pacemaker (or artificial pacemaker, so as not to be confused with the natural pacemaker of the heart), is a medical ... A possible complication of dual-chamber artificial pacemakers is pacemaker-mediated tachycardia (PMT), a form of reentrant ... In PMT, the artificial pacemaker forms the anterograde (atrium to ventricle) limb of the circuit and the atrioventricular (AV) ... Hyman himself referred to his invention as an "artificial pacemaker", the term continuing in use to this day. An apparent ...
Pacemaker reprogramming. 124. All. 18 Years and older (Adult, Older Adult). NCT01999751. EH12274. October 2012. April 2, 2018. ... The Impact of Heart Rate on Central Blood Pressure in Sick Sinus Syndrome Patients With a Permanent Cardiac Pacemaker. *Aortic ... Vitatron pacemakers to be implanted: T60 DR, T70 DR, T20 SR, C60 DR ... Progressive Ventricular Dysfunction Prevention in Pacemaker Patients. *Cardiac Pacing Indication classI/IIa According AHA/ACC ...
For the natural pacemaker in the heart, see Cardiac pacemaker.. A pacemaker (or artificial pacemaker, so as not to be confused ... A possible complication of dual-chamber artificial pacemakers is pacemaker-mediated tachycardia (PMT), a form of reentrant ... "Risks - Pacemaker - Mayo Clinic". www.mayoclinic.org. Retrieved 2016-12-01.. *^ a b eMedicine , Pacemaker-Mediated Tachycardia ... "Pacemakers, Patient and Public Information Center : Heart Rhythm Society".. *^ a b "The leadless pacemaker: A new era in ...
For other uses see Pacemaker (disambiguation) A pacemaker (or artificial pacemaker, so as not to be confused with the hearts ... For other uses see Pacemaker (disambiguation) A pacemaker (or artificial pacemaker, so as not to be confused with the hearts ... Artificial pacemakers can be used in order to help with and/or treat these conditions: * Sinus node dysfunction - when the ... History of the artificial pacemaker In 1889 J A McWilliam reported in the British Medical Journal of his experiments in which ...
A pacemaker (or artificial pacemaker, so as not to be confused with the hearts natural pacemaker) is a medical device which ... Artificial pacemakers can be used in order to help with and/or treat these conditions: *Sinus node dysfunction - when the ... An artificial pacemaker with electrode for transvenous insertion (from St. Jude Medical). The body of the device is about 4 ... Hyman himself referred to his invention as an "artificial pacemaker", the term continuing in use to this day.[4][5] ...
Artificial Cardiac Pacemakers. A device designed to stimulate, by electric impulses, contraction of the Heart Muscles. It may ...
What is artificial pacemaker? Meaning of artificial pacemaker medical term. What does artificial pacemaker mean? ... Looking for online definition of artificial pacemaker in the Medical Dictionary? artificial pacemaker explanation free. ... artificial pacemaker. See PACEMAKER.. artificial pacemaker. ; cardiac pacemaker implanted electronic device that regularizes ... DDD pacemaker dual chamber pacemaker.. demand pacemaker an artificial pacemaker that activates only when it receives sensations ...
You searched for: Genre Articles Remove constraint Genre: Articles Subject Pacemaker, Artificial Remove constraint Subject: ... 1. The Treatment of Complete Heart Block with an Implanted, Controllable Pacemaker ...
How does an artificial pacemaker help a weak or damaged heart?. Artificial pacemakers are able to correct low cardiac output ... which physicians are able to correct with an artificial pacemaker. A pacemaker can start a ventricular contraction by ... An artificial pacemaker can be implanted by thoracotomy or introduced transvenously. In the transthoracic method the chest is ... If the heart is weak, for example, but needs stimulus only from time to time, the pace maker shuts off when the heart is ...
Make research projects and school reports about artificial heart easy with credible articles from our FREE, online encyclopedia ... and pictures about artificial heart at Encyclopedia.com. ... artificial pacemaker, device used to stimulate a rhythmic ... Artificial Heart How Products Are Made COPYRIGHT 1996 Gale Research Inc.. Artificial Heart. Background. A natural heart has two ... Artificial Heart Medical Discoveries COPYRIGHT 1997 Thomson Gale. Artificial heart. The heart functions primarily as a pump to ...
artificial pacemaker. 🔊 Listen to this. [ad_1] n.. *An electronic device that substitutes for the natural pacemaker of the ...
11-Year-Old Boy Is One of the Youngest to Get Artificial Heart ... Security Experts: Hackers Could Target Pacemakers. *. By LAUREN ... The FDA has not heard reports of malicious attacks on pacemakers, ICDs or insulin pumps, Long said. ... implantable devices such as pacemakers or insulin pumps. ... such as pacemakers, defibrillators and insulin pumps. ...
... use of expanded polytetrafluoroethylene sheet for an artificial cardiac pacemakerKenji Yorita1*, Junichi Takahashi2, Kazutoshi ... Twenty-years use of expanded polytetrafluoroethylene sheet for an artificial cardiac pacemaker ...
Pacemaker - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides ... pacemaker, and one or two long thin. wires that travel through a vein in the. chest to the heart. Pacemaker System. Pulse ... PACEMAKER. Yoga Yuniadi. Program Studi D3 Teknik Kardiovaskuler. Harapan Kita - UHAMKA. Overview. battery-powered implantable ... His bundle are typically treated with pacemaker. implantation because of the potential for. complete loss of conduction to the ...
This chest X-ray shows an artificial pacemaker that has been inserted beneath the skin of the chest. Pacemakers are given to ... ARTIFICIAL DEVICES. FIND OUT MORE. Technology plays an increasingly important role in modern medicine. Today, HI-TECH IMAGING ... The pacemaker delivers electrical signals to the heart via wire leads - these signals trigger contractions of the heart muscle ... The range of artificial devices used in treatment increases all the time. Devices available today include replacements for ...
A pacemaker is a small, battery-operated device. This device senses when your heart is beating irregularly or too slowly. It ... Cardiac pacemaker implantation; Artificial pacemaker; Permanent pacemaker; Internal pacemaker; Cardiac resynchronization ... pacemaker; Bradycardia - pacemaker; Heart block - pacemaker; Mobitz - pacemaker; Heart failure - pacemaker; HF - pacemaker; CHF ... Pacemakers can help keep your heart rhythm and heart rate at a safe level for you. The pacemaker battery lasts about 6 to 15 ...
Artificial Intelligence. Lawyers on the automation chopping block as AI gets its JD ... Brain pacemaker delivers constant stimulation for Alzheimers patients. An implant that delivers electrical stimulation could ... Once implanted into the brain, a pacemaker-like device delivering electrical stimulation could help improve the memory of ...
... the pacemaker ranks near the top in terms of impressiveness and lives saved. Over 3 million people around the world rely on ... Avenda Health Uses Artificial Intelligence to Improve Prostate Cancer Treatment. Cloud Computing for Clinical Trial Data: ... Do you have any leads on how to create other types of pacemaker cells to repair downstream pacemaker activity, for example ... Going Viral: Genetically Engineering a Pacemaker (Interview). December 17th, 2012 Shiv Gaglani Cardiology, Exclusive, Genetics ...
Artificial Bacterial Protein Allows Stem Cells to Home to the Heart. Microfluidic Chip Allows Embryonic Stem Cells to ... Avenda Health Uses Artificial Intelligence to Improve Prostate Cancer Treatment. Cloud Computing for Clinical Trial Data: ... Developing a Smart Bladder Pacemaker. February 16th, 2007 Medgadget Editors Neurology, Urology ...
A research team from Korea has developed a self-powered artificial cardiac pacemaker operated semi-permanently by a flexible ... A team from Korea has developed a self-powered artificial cardiac pacemaker operated semi-permanently by a flexible ... The worlds smallest pacemaker has been developed that is one-tenth of the size of a conventional pacemaker and is delivered ... Currently, pacemaker batteries last seven years on average, requiring frequent replacements, which may pose patients to a ...
A pacemaker is a small, battery-operated device that senses when your heart is beating irregularly or too slowly. It sends a ... Cardiac pacemaker implantation - discharge; Artificial pacemaker - discharge; Permanent pacemaker - discharge; Internal ... pacemaker discharge; AV block - pacemaker discharge; Heart failure - pacemaker discharge; Bradycardia - pacemaker discharge ... Note: Care of certain specialized pacemakers or pacemakers combined with defibrillators may be different than described below. ...
Artificial pacemakers are small devices surgically implanted within the chest. Leads from the pacemaker to the heart provide ... Most ICDs also have a pacemaker component so that a single device can be used to treat people who have more than one type of ... When the heart is beating too slowly, the pacemaker detects the problem and stimulates the heart rate to a normal level. ... number of arrhythmias are treated with radiofrequency catheter ablation or with an implanted device such as a pacemaker or ...
Pacemaker, Artificial. *Bradycardia. Intervention ICMJE Other: Home Monitoring Both patient groups are followed for 18 months ... the implantable pacemaker Philos II DR-T is capable of periodically transmitting data from the pacemaker memory to the ... Evaluate the Benefits of Pacemaker Follow-Up With Home-Monitoring (COMPAS). The safety and scientific validity of this study is ... Evaluate the Benefits of Pacemaker Follow-Up With Home-Monitoring. Official Title ICMJE Comparative Follow-up Schedule With ...
Pacemaker, Artificial Bradycardia Other: Home Monitoring Not Applicable Detailed Description:. Due to its integrated long- ... the implantable pacemaker Philos II DR-T is capable of periodically transmitting data from the pacemaker memory to the ... Evaluate the Benefits of Pacemaker Follow-Up With Home-Monitoring (COMPAS). The safety and scientific validity of this study is ... Thus, the physician will be able to closely monitor the patient and check the adequacy and efficiency of the pacemaker therapy ...
Artificial Cardiac Pacemaker industryArtificial Cardiac Pacemaker marketArtificial Cardiac Pacemaker market AnalysisArtificial ... Scope of Artificial Cardiac Pacemaker: Artificial Cardiac Pacemaker Market report evaluates the growth rate and the market ... the Artificial Cardiac Pacemaker market is set to experience favorable growth. The growth of the Artificial Cardiac Pacemaker ... Artificial Cardiac Pacemaker Market highlights following key factors:. *A complete background analysis of Artificial Cardiac ...
Production of implantable pacemakers quickly gets underway.. First artificial heart valve replacement performed. The first ... First pacemaker implanted in patient with heart block. The first battery-operated wearable pacemaker was implanted in a patient ... First successful pacemaker surgeries reported. The first successful surgeries for completely implantable pacemakers were ... The Starr-Edwards valve is still used today, along with other artificial heart valves that have saved the lives of millions of ...
It could power pacemakers without ever needing to be replaced ... Future pacemakers could be powered by artificial eels. A soft, ... Electric eel-inspired batteries could power life-long pacemakers. Layers of hydrogels generate power like an electric eel. ...
... Med Sci Monit. 2002 Oct;8(10):RA233- ... There are a number of theoretical ways that pacing the atrium may prevent arrhythmias and pacemakers are under investigation ... Early results from studies suggest that the implantation of such pacemakers can reduce atrial fibrillation burden and thereby ... The increased memory capacity and diagnostic capabilities of these devices allows the true efficacy of pacemaker interventions ...
  • For the natural pacemaker in the heart, see Cardiac pacemaker . (wikipedia.org)
  • The primary purpose of a pacemaker is to maintain an adequate heart rate , either because the heart's natural pacemaker is not fast enough, or because there is a block in the heart's electrical conduction system. (wikipedia.org)
  • A pacemaker (or artificial pacemaker , so as not to be confused with the natural pacemaker of the heart ) is a medical device that generates electrical impulses delivered by electrodes to contract the heart muscles and regulate the electrical conduction system of the heart . (wikipedia.org)
  • It thus avoids competition with the patient's own natural pacemaker. (thefreedictionary.com)
  • An electronic device that substitutes for the natural pacemaker of the heart. (liberaldictionary.com)
  • Their job is to take over the function of the natural pacemaker region if it goes wrong. (abpischools.org.uk)
  • To understand the functioning of an artificial pacemaker we must know natural pacemaker system of our heart. (pharmacistspharmajournal.org)
  • This system together is also called as natural pacemaker. (pharmacistspharmajournal.org)
  • In some patients the natural pacemaker system develops a defect over the time due to certain disease or old age, in there system, they are at the risk of developing congestive cardiac failure, as the impulse required for cardiac contraction in not enough or it is lesser in its potential or irregular impulses are generated by natural peacemaker system. (pharmacistspharmajournal.org)
  • It is needed when a person's natural pacemaker either doesn't work properly or the impulse is not transmitted adequately to the ventricles for the heart to contract. (heart.org)
  • Your heart contains a natural pacemaker called the sinoatrial or sinus node that triggers electrical impulses to spread over the heart, causing it to contract (beat). (netdoctor.co.uk)
  • The heart has its own natural pacemaker, called the sinoatrial (SA) node (see box, below left). (hse.ie)
  • This is sometimes caused by sinus node disease, where your natural pacemaker does not function properly, which can happen as a result of age, heart disease or medication. (hse.ie)
  • It acts as the heart's natural pacemaker by sending out electrical impulses through the heart to another clump of cells called the atrioventricular node, found between the atria and ventricles. (hse.ie)
  • your natural pacemaker does not work properly but you do not have heart block. (hse.ie)
  • Most biventricular pacemakers implanted today can also work as implantable cardioverter defibrillators (ICD). (medlineplus.gov)
  • Note: Care of certain specialized pacemakers or pacemakers combined with defibrillators may be different than described below. (medlineplus.gov)
  • Some artificial pacemaker devices also integrate defibrillators which also take care of ventricular fibrillations which are uncontrolled ventricular contractions where there is higher risk of sudden contractions (asystole), and sudden death. (pharmacistspharmajournal.org)
  • Shocks from pacemaker cardioverter defibrillators increase with amiodarone in patients at high risk for sudden cardiac death. (biomedsearch.com)
  • LENZER: So there's everything from what seem like very low-risk devices like surgical mesh that's put in women to prevent stress incontinence - urinary incontinence, used in men for hernias, all the way up to implanted cardiac defibrillators and pacemakers all the way to deep-brain stimulators, Wi-Fi-enabled, computer-chipped devices, as well as combination devices that actually have drugs embedded in the device. (npr.org)
  • Inspite of the reliability of implanted cardiac pacemakers and defibrillators having improved studies have shown that these devices still tended to malfunction at times. (medindia.net)
  • One study examined data supplied by device manufacturers to the U.S. Food and Drug Administration from 1990 to 2002 during which 2.25 million pacemakers and 415,780 defibrillators were implanted in Americans. (medindia.net)
  • Data has revealed that 8,834 pacemakers and 8,489 defibrillators were removed because they malfunctioned. (medindia.net)
  • The somewhat unpredictability of pacemakers and defibrillators first became headline news when the Guidant Corp. issued an alert saying that about 28,000 pacemakers had defects that could make them malfunction. (medindia.net)
  • A specific type of pacemaker called a defibrillator combines pacemaker and defibrillator functions in a single implantable device, which should be called a defibrillator, for clarity. (wikipedia.org)
  • A special type of pacemaker can be used for people with heart failure. (medlineplus.gov)
  • You should know what type of pacemaker you have and which company made it. (medlineplus.gov)
  • The type of pacemaker depends on what type of rhythms are involved. (healthtap.com)
  • This uses a special type of pacemaker. (rochester.edu)
  • The type of pacemaker you need depends on your heart problem. (hse.ie)
  • The principal inclusion criterion is indication for dual chamber pacemaker/ICD implantation. (clinicaltrials.gov)
  • Early results from studies suggest that the implantation of such pacemakers can reduce atrial fibrillation burden and thereby obviate the need for more invasive procedures such as atrioventricular nodal ablation. (nih.gov)
  • Few studies have characterized the surgical outcomes following epicardial pacemaker implantation in neonates with congenital complete atrioventricular block (CCAVB). (scielo.br)
  • This study sought to assess the long-term outcomes of a minimally invasive epicardial approach using a subxiphoid access for pacemaker implantation in neonates. (scielo.br)
  • Between July 2002 and February 2015, 16 consecutive neonates underwent epicardial pacemaker implantation due to CCAVB. (scielo.br)
  • There were two deaths at 12 and 325 days after pacemaker implantation due to bleeding from thrombolytic use and progressive refractory heart failure, respectively. (scielo.br)
  • Epicardial pacemaker implantation through a subxiphoid approach in neonates with CCAVB is technically feasible and associated with excellent surgical outcomes and pacing lead longevity. (scielo.br)
  • Permanent pacemaker implantation in neonates with congenital complete atrioventricular block (CCAVB) is technically challenging due to the small size of the patients, presence of concomitant structural heart defects, and rapid child growth. (scielo.br)
  • Is it the cause of pacemaker implantation by the kind of pacemaker used? (healthtap.com)
  • Would a delay in performing pacemaker implantation cause permanent complications? (healthtap.com)
  • Objective: To assess the safety, efficacy and effects of LV pacing using an active-fixation coronary sinus lead compared to RV pacing in patients eligible to conventional pacemaker (PM) implantation. (usp.br)
  • Pacemaker implantation is a procedure to put a small, battery-operated device called a pacemaker into your chest, to help your heart beat regularly. (hse.ie)
  • The pacing wire is then connected to an external pacemaker outside the body. (wikipedia.org)
  • In 1957 engineer Earl Bakken of Minneapolis, Minnesota, produced the first wearable external pacemaker for a patient of Dr. C. Walton Lillehei. (bionity.com)
  • There are three basic types of permanent pacemakers, classified according to the number of chambers involved and their basic operating mechanism: Single-chamber pacemaker. (wikipedia.org)
  • They are not permanent pacemakers. (medlineplus.gov)
  • Dual-chamber pacemaker. (wikipedia.org)
  • DDD pacemaker dual chamber pacemaker . (thefreedictionary.com)
  • dual chamber pacemaker an implanted pacemaker having two leads, one in the atrium and one in the ventricle, so that electromechanical synchrony between the chambers can be approximated. (thefreedictionary.com)
  • A dual chamber pacemaker senses and paces in both the atrium and the ventricle. (thefreedictionary.com)
  • The epicardial pacemaker leads were placed after the patient collapsed during aortic valve surgery. (wikipedia.org)
  • Usually the pacemaker site is the sinoatrial node , near the junction with the superior vena cava. (thefreedictionary.com)
  • escape pacemaker an ectopic pacemaker that assumes control of cardiac impulse propagation because of failure of the sinoatrial node to generate one or more normal impulses. (thefreedictionary.com)
  • You have engineered sinoatrial node (SAN) pacemaker cells using the transcription factor, Tbx18 , which opens the doors for fixing problems with SAN activity. (medgadget.com)
  • Others, called biventricular pacemakers have multiple electrodes stimulating differing positions within the lower heart chambers to improve synchronization of the ventricles , the lower chambers of the heart. (wikipedia.org)
  • Permanent pacing with an implantable pacemaker involves transvenous placement of one or more pacing electrodes within a chamber, or chambers, of the heart, while the pacemaker is implanted inside the skin under the clavicle. (wikipedia.org)
  • This transistorised pacemaker, housed in a small plastic box, had controls to permit adjustment of pacing heart rate and output voltage and was connected to electrode leads which passed through the skin of the patient to terminate in electrodes attached to the surface of the myocardium of the heart. (bionity.com)
  • Various types of pacemakers are available to correct different problems, but basically the machines consist of electrodes, conducting wires, and a pulse generator. (crutchfielddermatology.com)
  • Person with conventional artificial pacemaker implant should not be subjected to MRI scanning as the heavy magnetic fields in MRI may disrupt settings and the electrodes which may damage heart muscles. (pharmacistspharmajournal.org)
  • We then describe the effect of augmenting an ICD-9-CM version of the Charlson comorbidity index, given the possible confounding of comorbidities and complications, for three common inpatient surgical procedures: coronary artery bypass surgery, pacemaker surgery, and hip fracture repair. (nih.gov)
  • Additionally, the six-month follow-up period limited understanding of long-term efficacy and pacemaker-related complications. (acc.org)
  • Having a pacemaker fitted is very straightforward and the risk of complications is low. (hse.ie)
  • After satisfactory lodgement of the electrode is confirmed, the opposite end of the electrode lead is connected to the pacemaker generator. (wikipedia.org)
  • An artificial pacemaker with electrode for transvenous insertion (from St. Jude Medical). (wikidoc.org)
  • Electrode size and shape, tissue electrolyte conductivity, and the distance separating the electrode from the adjacent tissue are factors in determining the energy required of the pacemaker. (google.com)
  • For example, current drain in a constant voltage pacemaker is determined by a combination of the impedance of the pacemaker circuitry, the nature of the electrode resistance and the characteristics of the electrode tip interface with the surrounding tissue. (google.com)
  • The impedance presented to the pulse generated by the pacemaker is a function of the geometric, i.e. macroscopic, surface area of the electrode and the radius of the electrode. (google.com)
  • An artificial pacemaker (serial number 1723182) from St. Jude Medical, with electrode. (bigthink.com)
  • Other types of pacemakers can be used in severe heart failure . (medlineplus.gov)
  • Transvenous pacing is often used as a bridge to permanent pacemaker placement. (wikipedia.org)
  • The transvenous method of installing a pacemaker doesn't require major surgery. (crutchfielddermatology.com)
  • A pacemaker wire is placed into a vein, under sterile conditions, and then passed into either the right atrium or right ventricle. (wikipedia.org)
  • These hearts consist of equipment that pulses the blood between heart beats or use an artificial auxiliary ventricle (left ventricle assist device, LVAD) that pumps a portion of the normal cardiac output. (encyclopedia.com)
  • A new "leadless" pacemaker is a self-contained unit that is implanted in the right ventricle of the heart. (medlineplus.gov)
  • In vivo , focal Tbx18 gene transfer in the guinea-pig ventricle yields ectopic pacemaker activity, correcting a bradycardic disease phenotype. (medgadget.com)
  • A newer type of device called a "leadless pacemaker" is a self-contained pacing unit that is inserted into the right ventricle of the heart. (medlineplus.gov)
  • The increased memory capacity and diagnostic capabilities of these devices allows the true efficacy of pacemaker interventions to be determined. (nih.gov)
  • These devices are known as artificial pacemaker devices they are required to comply with the all requirements and regulations of US FDA for their quality, efficacy and safety. (pharmacistspharmajournal.org)
  • The efficacy of amiodarone used in combination with a pacemaker cardioverter defibrillator (PCD) to decrease episodes of ventricular tachycardia and subsequent PCD shocks is not clear. (biomedsearch.com)
  • Some combine a pacemaker and defibrillator in a single implantable device. (wikipedia.org)
  • Kohno and co-author Dr. William Maisel of the Cardiovascular Institute of Beth Israel Deaconess Medical Center in Boston have called for the U.S. Food and Drug administration regulate and to work with medical device manufacturers to stop potential security breaches in a variety of wireless, implantable devices such as pacemakers or insulin pumps. (go.com)
  • In addition, an increasing number of arrhythmias are treated with radiofrequency catheter ablation or with an implanted device such as a pacemaker or cardioverter-defibrillator. (healthcentral.com)
  • Most ICDs also have a pacemaker component so that a single device can be used to treat people who have more than one type of arrhythmia. (healthcentral.com)
  • A pacemaker is a small, battery-operated device. (medlineplus.gov)
  • Once implanted into the brain, a pacemaker-like device delivering electrical stimulation could help improve the memory of Alzheimer's patients. (zdnet.com)
  • A pacemaker is a small, battery-operated device that senses when your heart is beating irregularly or too slowly. (medlineplus.gov)
  • Due to its integrated long-distance telemetry, the implantable pacemaker Philos II DR-T is capable of periodically transmitting data from the pacemaker memory to the BIOTRONIK Service Center via patient device. (clinicaltrials.gov)
  • A cardiac rhythm management device is described in which the rate controlling parameter of a rate adaptive pacemaker is the heart's total active time. (google.co.uk)
  • A pacemaker is a device which sends electrical signals to the heart triggering heartbeats when needed. (healthtap.com)
  • An artificial pacemaker is an electrical device implanted to keep a heart beating at the right speed and rhythm. (heart.org)
  • Dr. William H. Maisel, director of the pacemaker and device service at Beth Israel Deaconess Medical Center, in Boston authored two studies in this regard. (medindia.net)
  • There were 30 deaths attributed to device failure from 1990 to 2002 among pacemaker patients and 31 among the much smaller number of defibrillator patients. (medindia.net)
  • Hopefully this technology will continue to evolve and incorporate the device diagnostic and remote monitoring capabilities that are present in currently available pacemakers. (acc.org)
  • Greatbatch, seeing the biggest limitation of his pacemaker device hinge on the 2-year battery life, later acquired the rights to a lithium iodide battery, which would make his design last 10 years or more, and he redesigned it - the original version was potentially "explosive" - and later, his redesigned battery was adapted in countless medical devices, and still is. (bigthink.com)
  • As a surgeon, Schneider is known for his success in the replacement of entire joints, especially shoulders, and, in the later chapters of the book, he shifts his gaze to what he calls "the implant revolution," looking toward a time when surgery will mostly involve not the extraction of diseased tissue but the placing of an artificial body part or other device within the patient. (newyorker.com)
  • Currently leadless pacemakers are available only for people who have certain medical conditions involving a slow heartbeat. (medlineplus.gov)
  • Overall results showed the leadless pacemaker met prespecified pacing and sensing requirements in the large majority of patients. (acc.org)
  • The active-fixation leadless pacemakers were successfully implanted in 504 patients (95.8 percent). (acc.org)
  • Investigators noted that the study was limited by the observational design that did not directly compare the leadless cardiac pacemaker with conventional pacemakers. (acc.org)
  • Leadless cardiac pacemakers create a paradigm shift in how we are going to look at pacemaker therapy over the coming years," said Jagmeet P. Singh, MD, DPhil, deputy editor of JACC: Clinical Electrophysiology . (acc.org)
  • While leadless cardiac pacemakers are only available as single-chamber pacemakers at this juncture, there will be opportunities for dual- as well as three-chamber approaches in the future. (acc.org)
  • Conventional implantable dual-chamber cardiac pacemakers adjust heart rate and maintain normal atrial and ventricular contraction by tracking "native" atrial electrical activity and pacing the ventricles after a predetermined programmable atrioventricular delay. (annals.org)
  • This is an old procedure used only as a life saving means until an electrical pacemaker is brought to the patient. (wikipedia.org)
  • Right atrial and right ventricular leads as visualized under x-ray during a pacemaker implant procedure. (wikipedia.org)
  • It's possible that you are paying more attention to your body after the pacemaker procedure. (healthtap.com)
  • This is a procedure to insert an artificial pacemaker. (epnet.com)
  • The role of pacemaker therapy in acute myocardial infarction. (biomedsearch.com)
  • It will be helpful to any health care provider that you may see in the future because it says what kind of pacemaker you have. (medlineplus.gov)
  • Myocytes transduced in vivo acquire the cardinal tapering morphology and physiological automaticity of native SAN pacemaker cells. (medgadget.com)
  • A cardiac pacemaker is disclosed having means for automatically adjusting the rate of operation to correspond to physiological changes. (google.com)
  • Since this interval in turn corresponds to physiological changes, the pacemaker is adapted to automatically follow the patient's physiological changes. (google.com)
  • In physiological terms, a cardiac pacemaker must be capable of generating a signal with a sufficient magnitude to depolarise the excitable cells of tissue within the heart. (google.com)
  • Exercise tolerance and respiro-circulatory response to treadmill exercise in patients with an implanted non-physiological pacemaker for complete heart block. (nii.ac.jp)
  • World's first Lithium-iodide cell powered pacemaker. (wikidoc.org)
  • The world's smallest pacemaker has been developed that is one-tenth of the size of a conventional pacemaker and is delivered directly into the heart through a catheter inserted in the femoral vein! (planettechnews.com)
  • For example, "Hyman did not publish data on the use of his pacemaker in humans because of adverse publicity, both among his fellow physicians, and due to newspaper reporting at the time. (bionity.com)
  • Do you have any leads on how to create other types of pacemaker cells to repair downstream pacemaker activity, for example atrioventricular block? (medgadget.com)
  • What causes burping after pacemaker insertion? (healthtap.com)
  • Available at: https://www.hopkinsmedicine.org/healthlibrary/test_procedures/cardiovascular/pacemaker_insertion_92,p07980. (epnet.com)
  • In the first half of the tracing, pacemaker stimuli at 60 beats per minute result in a wide QRS complex with a right bundle branch block pattern. (wikipedia.org)
  • Because decreased pacemaker stimuli do not result in a ventricular escape rhythm , the patient can be said to be pacemaker-dependent and needs a definitive pacemaker. (wikipedia.org)
  • Leads from the pacemaker to the heart provide electrical stimuli to maintain the heart rate in individuals with bradycardia or disorders of the AV node. (healthcentral.com)
  • For clinical purposes, the current achievement will benefit the development of self-powered cardiac pacemakers as well as prevent heart attacks via the real-time diagnosis of heart arrhythmia," said Professor Keon Jae Lee of the Department of Materials Science and Engineering at KAIST. (planettechnews.com)
  • With a pacemaker history, that episode requires further analysis by your cardiologist to make sure it wasn't an arrhythmia. (healthtap.com)
  • This chest X-ray shows an artificial pacemaker that has been inserted beneath the skin of the chest. (factmonster.com)
  • Artificial pacemakers are small devices surgically implanted within the chest. (healthcentral.com)
  • You had a pacemaker placed in your chest to help your heart beat properly. (medlineplus.gov)
  • Depending on where your pacemaker is placed and how long ago, and whether chest or arm motion affects the symptoms, the pacemaker may or may not be related to your symptoms. (healthtap.com)
  • Her new book is about the potential dangers of the millions of medical devices implanted in our bodies - artificial joints, cardiac stents, surgical mesh and pacemakers, among many others. (npr.org)
  • Artificial heart valve or stents. (christianacare.org)
  • The escape interval of the pacemaker pulse generator is varied in accordance with the detected stimulus-T interval and in the same direction, so as to vary the pacing rate in accordance with variations in such interval. (google.com)
  • About four million people around the world have pacemakers implanted in their bodies, and those devices all got there the same way: surgeons sliced open their patients' shoulders and inserted the pulse-generating devices in the flesh near the heart, then attached tiny wires to the heart muscle. (slashdot.org)
  • The most significant frequency component of the pacing pulse generated by the pacemaker is on the order of 1 KHz. (google.com)
  • This pacemaker has three wires placed in three chambers of the heart. (wikipedia.org)
  • Leads (wires) were connected to the pacemaker, and one end of the wires was threaded through a vein into your heart. (medlineplus.gov)
  • Most pacemakers have only one or two wires that go to the heart. (medlineplus.gov)
  • Artificial pacemakers are put into the body with two wires running to the heart. (abpischools.org.uk)
  • This tiny pacemaker is the first that doesn't require wires to bring the electrical signal to the heart muscle, because it's implanted inside the heart itself, and is hooked onto the inner wall of one of the heart's chambers. (slashdot.org)
  • The pacemaker is a small metal box weighing 20-50g, which is attached to one or more pacing leads (wires) that run to your heart. (hse.ie)
  • Any number of problem, including sinus or ventricular arrest, atrioventricular (AV) block, and Stokes- Adams syndrome, may cause an insufficient or irregular heartbeat, which physicians are able to correct with an artificial pacemaker. (crutchfielddermatology.com)
  • A pacemaker senses if the heartbeat is above a certain rate. (medlineplus.gov)
  • The pacemaker can also sense when the heartbeat slows down too much. (medlineplus.gov)
  • The pacemaker may help when the heart is not pumping well because of a slow heartbeat. (rochester.edu)
  • The first battery-operated wearable pacemaker was implanted in a patient with heart block caused by surgery. (heart.org)
  • In this report, we are also focusing on bionic devices in pipeline, which include wearable artificial kidney, bio-lung, and artificial pancreas. (marketsandmarkets.com)
  • A pacemaker can start a ventricular contraction by transmitting repetitive, evenly paced current pulses to the heart from an outside electrical source. (crutchfielddermatology.com)
  • Some pacemakers also can deliver electric shocks to the heart that can stop life-threatening arrhythmias (irregular heartbeats). (medlineplus.gov)
  • There are a number of theoretical ways that pacing the atrium may prevent arrhythmias and pacemakers are under investigation for the prevention and termination of atrial arrhythmias with additional tailored, programmable algorithms. (nih.gov)
  • Modern devices are demand pacemakers, in which the stimulation of the heart based on the dynamic demand of the circulatory system. (wikipedia.org)
  • Artificial hearts and pump-assist devices have thus been developed as potential alternatives. (encyclopedia.com)
  • ARTIFICIAL DEVICES are commonly used either to replace diseased body parts completely, or to provide assistance to failing organs. (factmonster.com)
  • The range of artificial devices used in treatment increases all the time. (factmonster.com)
  • Most machines and devices will not interfere with your pacemaker. (medlineplus.gov)
  • You should keep several devices at least 12 inches (30 centimeters) away from the site where the pacemaker is placed under your skin. (medlineplus.gov)
  • For the thousands of Americans who depend on the pacemaker or the defibrillator reliability of these devices is an important issue. (medindia.net)
  • The National Heart Institute established the artificial heart program in 1964, leading to the first total artificial heart for human use implanted in 1969. (encyclopedia.com)
  • The pacemaker rate was variable from about 80 to 120 pulses per minute, and likewise the voltage variable from 1.5 to 120 volts" The apparatus was used to revive a stillborn infant at Crown Street Women's Hospital, Sydney whose heart continued "to beat on its own accord", "at the end of 10 minutes" of stimulation. (bionity.com)
  • Modern pacemakers are externally programmable and allow a cardiologist, particularly a cardiac electrophysiologist to select the optimal pacing modes for individual patients. (wikipedia.org)
  • Currently, pacemaker batteries last seven years on average, requiring frequent replacements, which may pose patients to a potential risk involved in medical procedures. (planettechnews.com)
  • Many patients who require traditional pacemakers have co-occurring pathophysiologies, such as heart failure from ischemia and resulting fibrosis. (medgadget.com)
  • The pacemaker delivers electrical signals to the heart via wire leads - these signals trigger contractions of the heart muscle and maintain a regular heart beat. (factmonster.com)
  • When it is above that rate, the pacemaker will stop sending signals to the heart. (medlineplus.gov)
  • Pacemakers are typically used for hearts that beat too slowly or irregularly. (heart.org)
  • Pacemakers are given to people whose hearts have a defective electrical system. (factmonster.com)
  • Whereas the vast majority of the heart's 10 billion cells are cardiomyocytes, which are responsible for pumping blood through the body, the pacemaker is composed of a specialized population of ~10,000 cells with spontaneous electrical rhythm originating in the sino-atrial node (SAN).By using an adenovirus carrying the transcription factor Tbx18 , the Cedars-Sinai Heart Institute team succeeded in reprogramming cardiomyocytes into induced sino-atrial node (iSAN) pacemaker cells. (medgadget.com)
  • Electromagnetic field can alter, or inhibit an artificial pacemaker and it is an established fact that all electrical dental equipments generate electromagnetic fields . (bvsalud.org)
  • Advancements in pacemaker technology have made them immune to most electrical dental equipment . (bvsalud.org)
  • Ivabradine works by inhibiting the electrical current produced in the pacemaker of the heart that controls the heart rate. (netdoctor.co.uk)