Pacemaker artificial. Medical search

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.

The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.

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.

An electrophysiologic technique for studying cells, cell membranes, and occasionally isolated organelles. All patch-clamp methods rely on a very high-resistance seal between a micropipette and a membrane; the seal is usually attained by gentle suction. The four most common variants include on-cell patch, inside-out patch, outside-out patch, and whole-cell clamp. Patch-clamp methods are commonly used to voltage clamp, that is control the voltage across the membrane and measure current flow, but current-clamp methods, in which the current is controlled and the voltage is measured, are also used.

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.

Surgical insertion of synthetic material to repair injured or diseased heart valves.

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.

Clusters of neuronal cell bodies in invertebrates. Invertebrate ganglia may also contain neuronal processes and non-neuronal supporting cells. Many invertebrate ganglia are favorable subjects for research because they have small numbers of functional neuronal types which can be identified from one animal to another.

An analgesic and anti-inflammatory agent used in the treatment of rheumatoid arthritis.

Clusters of multipolar neurons surrounded by a capsule of loosely organized CONNECTIVE TISSUE located outside the CENTRAL NERVOUS SYSTEM.

Peptides released by NEURONS as intercellular messengers. Many neuropeptides are also hormones released by non-neuronal cells.

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.

A biogenic amine that is found in animals and plants. In mammals, melatonin is produced by the PINEAL GLAND. Its secretion increases in darkness and decreases during exposure to light. Melatonin is implicated in the regulation of SLEEP, mood, and REPRODUCTION. Melatonin is also an effective antioxidant.

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.

Recording changes in electrical impedance between electrodes placed on opposite sides of a part of the body, as a measure of volume changes in the path of the current. (Stedman, 25th ed)

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.

Cessation of heart beat or MYOCARDIAL CONTRACTION. If it is treated within a few minutes, heart arrest can be reversed in most cases to normal cardiac rhythm and effective circulation.

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.

A conical fibro-serous sac surrounding the HEART and the roots of the great vessels (AORTA; VENAE CAVAE; PULMONARY ARTERY). Pericardium consists of two sacs: the outer fibrous pericardium and the inner serous pericardium. The latter consists of an outer parietal layer facing the fibrous pericardium, and an inner visceral layer (epicardium) resting next to the heart, and a pericardial cavity between these two layers.

Inorganic or organic compounds that contain boron as an integral part of the molecule.

The class of true jellyfish, in the phylum CNIDARIA. They are mostly free-swimming marine organisms that go through five stages in their life cycle and exhibit two body forms: polyp and medusa.

Precursor cells destined to differentiate into cardiac myocytes (MYOCYTES, CARDIAC).

Rapid, irregular atrial contractions caused by a block of electrical impulse conduction in the right atrium and a reentrant wave front traveling up the inter-atrial septum and down the right atrial free wall or vice versa. Unlike ATRIAL FIBRILLATION which is caused by abnormal impulse generation, typical atrial flutter is caused by abnormal impulse conduction. As in atrial fibrillation, patients with atrial flutter cannot effectively pump blood into the lower chambers of the heart (HEART VENTRICLES).

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).

An electrogenic ion exchange protein that maintains a steady level of calcium by removing an amount of calcium equal to that which enters the cells. It is widely distributed in most excitable membranes, including the brain and heart.

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.

This structure includes the thin muscular atrial septum between the two HEART ATRIA, and the thick muscular ventricular septum between the two HEART VENTRICLES.

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.

Neural tracts connecting one part of the nervous system with another.

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.

The omission of atrial activation that is caused by transient cessation of impulse generation at the SINOATRIAL NODE. It is characterized by a prolonged pause without P wave in an ELECTROCARDIOGRAM. Sinus arrest has been associated with sleep apnea (REM SLEEP-RELATED SINUS ARREST).

Characteristic properties and processes of the NERVOUS SYSTEM as a whole or with reference to the peripheral or the CENTRAL NERVOUS SYSTEM.

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.

A pattern of gastrointestinal muscle contraction and depolarizing myoelectric activity that moves from the stomach to the ILEOCECAL VALVE at regular frequency during the interdigestive period. The complex and its accompanying motor activity periodically cleanse the bowel of interdigestive secretion and debris in preparation for the next meal.

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)

An artificial cardiac pacemaker (or artificial pacemaker, so as not to be confused with the natural cardiac pacemaker) or ... 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 ...

https://en.wikipedia.org/wiki/Artificial_cardiac_pacemaker

... he had an artificial pacemaker. On December 18, 2007, a 44-year-old man from Navarre, Florida, lost consciousness while riding ... On November 1, 2014, falling embers from the Wishes fireworks show landed on the artificial grass exterior of the ride, causing ...

https://en.wikipedia.org/wiki/List_of_incidents_at_Walt_Disney_World

The first artificial cardiac pacemaker. 1955. The first separation operation for conjoined twins. 1961. The cochlear implant ... The Jarvik-7 artificial heart was successfully installed. 1983. Robot-assisted surgery began with Arthrobot in Vancouver. 1985 ... John Hunter pioneered artificial insemination. 1796. Edward Jenner pioneered smallpox inoculation with cowpox virus. 1800. The ... The first self-contained artificial heart, AbioCor. 2001. The first remote surgery, using the ZEUS robotic surgical system. ...

https://en.wikipedia.org/wiki/History_of_surgery

Artificial hip replacement has become more common. Heart pacemakers or valves may be inserted. Many other types of prostheses ...

https://en.wikipedia.org/wiki/Surgery

An artificial cardiac pacemaker is a medical device that regulates the beating of the heart. Pacemaker may also refer to: ... Biological pacemaker, the use of specialized cells to improve the regulation of the heart Brain pacemaker, a device to treat ... a runner who enters a race to set a fast pace for other competitors Pacemaker (film), a 2012 South Korean film The Pacemaker, a ... a high-availability cluster resource manager Pacemaker (train), an American passenger train Pacemaker Entertainment, a Canadian ...

https://en.wikipedia.org/wiki/Pacemaker_(disambiguation)

Artificial cardiac pacemaker - invented by John A. Hopps in 1950/1951. A process to extract Bromine was invented by Herbert ... ". "Meet the Canadian engineer who casually invented the pacemaker , CBC Canada 2017". "Dianne Croteau Inventions, Patents and ...

https://en.wikipedia.org/wiki/List_of_Canadian_inventions_and_discoveries

An artificial cardiac pacemaker can also be installed to control the heartbeat. Other treatments are useful to treat the other ...

https://en.wikipedia.org/wiki/Taxine_alkaloids

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, ...

https://en.wikipedia.org/wiki/Fight_for_Life_(TV_series)

... valve Artificial cardiac pacemaker George B. Griffenhagen and Calvin H. Hughes. The History of the Mechanical ... An artificial heart is a device that replaces the heart. Artificial hearts are typically used to bridge the time to heart ... Artificial kidney pioneer Willem Johan Kolff started the Utah artificial organs program in 1967. There, physician-engineer ... In 1964, the National Institutes of Health started the Artificial Heart Program, with the goal of putting an artificial heart ...

https://en.wikipedia.org/wiki/Artificial_heart

... artificial heart valve, implantable cardioverter-defibrillator, artificial cardiac pacemaker, and coronary stent. Orthopaedic ... 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) ...

https://en.wikipedia.org/wiki/Implant_(medicine)

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 ...

https://en.wikipedia.org/wiki/Tony_Benn

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 ...

https://en.wikipedia.org/wiki/Walter_Keller_(researcher)

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 ...

https://en.wikipedia.org/wiki/Otis_Boykin

Sachar was suffering from ischemic heart disease and had an artificial cardiac pacemaker implanted. In April 2018, he was ...

https://en.wikipedia.org/wiki/Rajinder_Sachar

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 ...

https://en.wikipedia.org/wiki/Adrian_Kantrowitz

Examples of such instruments include scalpels, hypodermic needles, and artificial pacemakers. This is also essential in the ...

https://en.wikipedia.org/wiki/Sterilization_(microbiology)

Krusty is illiterate and has an artificial pacemaker which requires him to avoid microwave radiation. When Bart and Lisa visit ...

https://en.wikipedia.org/wiki/Krusty_Gets_Busted

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 ...

https://en.wikipedia.org/wiki/Dianne_Feinstein

A temporary artificial pacemaker was applied to Evren while in intensive care due to bradycardia. His large intestine was ...

https://en.wikipedia.org/wiki/Kenan_Evren

In 1926, the first artificial pacemaker was made by Australian physician Dr. Mark C. Lidwell. This portable machine was plugged ... The pacemaker rate ranged from about 80 to 120 pulses per minute and the voltage also variable from 1.5 to 120 volts. The 1930s ...

https://en.wikipedia.org/wiki/Biomedical_sciences

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 ...

https://en.wikipedia.org/wiki/20th_century_in_science

Earl Bakken, inventor of the first external, battery-operated, transistorized, wearable artificial pacemaker, founder of ...

https://en.wikipedia.org/wiki/Columbia_Heights,_Minnesota

Some examples include pacemakers, infusion pumps, the heart-lung machine, dialysis machines, artificial organs, implants, ... In some cases, implants contain electronics, e.g. artificial pacemakers and cochlear implants. Some implants are bioactive, ... Artificial body part replacements are one of the many applications of bionics. Concerned with the intricate and thorough study ... One of the goals of tissue engineering is to create artificial organs (via biological material) for patients that need organ ...

https://en.wikipedia.org/wiki/Biomedical_engineering

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. Cancer treatment has been developed with radiotherapy, ...

https://en.wikipedia.org/wiki/History_of_medicine

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 ...

https://en.wikipedia.org/wiki/Earl_Bakken

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, ...

https://en.wikipedia.org/wiki/Electrical_injury

... is the inability of an implanted artificial pacemaker to perform its intended function of regulating the ... A pacemaker uses electrical impulses delivered by electrodes in order to contract the heart muscles. Failure of a pacemaker is ... Approximately 2.25 million pacemakers were implanted in the United States between 1990 and 2002, and of those pacemakers, about ... The magnet can interrupt the pacing and inhibit the output of pacemakers. If MRI must be done, the pacemaker output in some ...

https://en.wikipedia.org/wiki/Pacemaker_failure

... 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- ... Had First Internal Pacemaker". The New York Times. v t e (Articles with short description, Short description is different from ...

https://en.wikipedia.org/wiki/Arne_Larsson_(patient)

Third-degree AV block can be treated more permanently with the use of a dual-chamber artificial pacemaker. This type of device ... 2004). "Compared to single-chamber ventricular pacemakers, dual-chamber pacemakers may reduce the incidence of complications in ... "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 the use of a biventricular pacemaker, which has an ...

https://en.wikipedia.org/wiki/Third-degree_atrioventricular_block

Artificial heart Biological pacemaker Xenotransplantation Kilic A, Emani S, Sai-Sudhakar CB, Higgins RS, Whitson BA, et al. ( ... 2015). "The total artificial heart". Journal of Thoracic Disease. 7 (12): 2172-80. doi:10.3978/j.issn.2072-1439.2015.10.70. PMC ... Xenografts from other species and artificial hearts are two less successful alternatives to allografts. The ability of medical ... Patients who are in need of a heart transplant but do not qualify may be candidates for an artificial heart or a left ...

https://en.wikipedia.org/wiki/Heart_transplantation

... inventor of the first artificial pacemaker Yvette Bonny (born 1938) - pediatrician Basil Boulton (1938-2008) - pediatrician and ...

https://en.wikipedia.org/wiki/Lists_of_Canadians

... although many modern pacemakers are safe for use within an MRI scanner. Other metal structures such as artificial valves and ... Furthermore, an MRI scan cannot be performed in some people who have metallic implants such as some types of pacemakers, ...

https://en.wikipedia.org/wiki/Cardiac_imaging

Developed in part by researchers from Kindai University, the water pump mechanisms use artificial intelligence to count the ... By 2008 security researchers had shown the ability to remotely control pacemakers without authority. Later hackers demonstrated ... such as pacemakers, Fitbit electronic wristbands, or advanced hearing aids. Some hospitals have begun implementing "smart beds ... Artificial Intelligence in Medicine. 89: 61-69. doi:10.1016/j.artmed.2018.05.005. PMID 29871778. S2CID 46941758. Engineer, A; ...

https://en.wikipedia.org/wiki/Internet_of_things

In those with facial palsy, frequent use of artificial tears while awake is recommended, along with ointment and a patch or ... About 94% of people have full recovery, but 5% need a permanent pacemaker and 1% end up with persistent heart block (the actual ... About a third of people with Lyme carditis need a temporary pacemaker until their heart conduction abnormality resolves, and 21 ...

https://en.wikipedia.org/wiki/Lyme_disease

... was a Canadian heart surgeon known for his role in developing the artificial pacemaker and the use of hypothermia in open heart ...

https://en.wikipedia.org/wiki/Wilfred_Gordon_Bigelow

In early 1957, he participated in the operation where the world's first artificial cardiac pacemaker was employed by Lillehei. ... The Scarlet Pimpernel in Artificial Heart Valves - Peter Allen, M.D., British Columbia Medical Journal 31;7, Page 395 (1989) ... compared to the mechanical artificial valve that did require anticoagulants. 1990 to 1999 Allen was a chairman of medical ...

https://en.wikipedia.org/wiki/Peter_Allen_(physician)

William Dobelle, Artificial Vision Pioneer, Dies at 62". The New York Times. Naumann J (2012). Search for Paradise: A Patient's ... The first neuroprosthetic device, however, was the pacemaker. The terms are sometimes used interchangeably. Neuroprosthetics ... Tetraplegic Matt Nagle became the first person to control an artificial hand using a BCI in 2005 as part of the first nine- ... This work made possible creation of BCIs that read arm movement intentions and translate them into movements of artificial ...

https://en.wikipedia.org/wiki/Brain–computer_interface

Artificial heart valve - Artificial intelligence - Artificial limb - Artificial pacemaker - Automated external defibrillator - ... A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Artificial heart - ... Diaphragmatic pacemaker - Engineering - Functional electrical stimulation Genetic engineering - Genetic engineering topics - ...

https://en.wikipedia.org/wiki/Index_of_biomedical_engineering_articles

... and mechanical artificial heart valves, many of whom may also have AF). A high INR may indicate increased bleeding risk, while ... and to implant a pacemaker instead. This "ablate and pace" technique has an important place in the treatment of AF< as it is ... and de-emphasised the artificial stratification into low/moderate/high risk, given the poor predictive value of these 3 ...

https://en.wikipedia.org/wiki/Management_of_atrial_fibrillation

However, this research was faulty because it failed to shield the participants from artificial light. Although subjects were ... It is indicated that these abusive drugs affect the central circadian pacemaker. Individuals with substance use disorder ... June 1999). "Stability, precision, and near-24-hour period of the human circadian pacemaker". Science. 284 (5423): 2177-81. doi ... Kalpesh J. "Wellness With Artificial Light". Retrieved 11 January 2016. [unreliable medical source?] Scheer FA, Wright KP, ...

https://en.wikipedia.org/wiki/Circadian_rhythm

Having lived with three stents in his heart, a pacemaker and two artificial hips, Hofmann died of natural causes at the age of ...

https://en.wikipedia.org/wiki/Harold_Hofmann

... the company was invited to participate in artificial cardiac pacemaker research in which Wickham as head of research and ... particularly in the development of the implantable cardiac pacemaker". Wickham had no formal engineering training, finishing ...

https://en.wikipedia.org/wiki/Geoffrey_Wickham

However, electrical recordings made from within the heart such as with an artificial cardiac pacemaker or during an ...

https://en.wikipedia.org/wiki/Electrogram

Her research is focused on discovering ways to extremely miniaturize electronic devices such pacemaker, neuromodulators, and ... artificial pancreas so that they can be seamlessly implanted into patients with minimal invasiveness to provide targeted ...

https://en.wikipedia.org/wiki/Ada_Poon

Batman seemed to agree and began to leave, but then revealed that he had tricked Hush - the pacemaker was still in his body, ... which is being kept alive through artificial means. He then confesses to Batman his plan: using his newfound resemblance to ... He's implied to have removed the pacemaker installed on his own heart by himself, and has shown the ability to grant himself ... Hush returned in the later Man-Bat miniseries, and is later shown remembering how painful it was to remove the pacemaker alone ...

https://en.wikipedia.org/wiki/Hush_(character)

Hayes' patients' artificial pacemakers, which have been implanted with bombs, from exploding. Dr. Gillian Hayes is performing ... Hayes removed the pacemaker and there was no explosion. Lt. Royko said that Franklin gave them too much time so he must have ... Royko cut the pacemaker, it exploded. Dr. Hayes eventually learned that it was a man named Zachary Franklin who was planting ... Franklin implanted a pacemaker in Lt. Royko's son, kidnaps Dr. Hayes as she is coming to the hospital basement, connects Lt. ...

https://en.wikipedia.org/wiki/Dead_in_a_Heartbeat

... pacemaker insertion), replacement (total hip replacement), supplement (herniorrhaphy using mesh), removal (cardiac pacemaker ... artificial vagina creation), fusion (spinal fusion) Wikisource has original text related to this article: ICD-10-PCS (2011) ICD ...

https://en.wikipedia.org/wiki/ICD-10_Procedure_Coding_System

... one of the pioneers of the artificial cardiac pacemaker Bob Anderson (Days of our Lives), a character from Days of our Lives ...

https://en.wikipedia.org/wiki/Bob_Anderson

A humanoid walking machine is an example of the soft cyborg and a pace-maker is an example for augmenting human as a hard ... "Artificial swarm intelligence diagnoses pneumonia better than individual computer or doctor". The Stanford Daily. 2018-09-27.{{ ... IA is sometimes contrasted with AI (artificial intelligence), that is, the project of building a human-like intelligence in the ... Shan Carter and Michael Nielsen introduce the concept of artificial intelligence augmentation (AIA): the use of AI systems to ...

https://en.wikipedia.org/wiki/Intelligence_amplification

... a Peterbilt 352 Pacemaker semi-truck armed with rockets, and protected by KITT's Molecular Bonded Shell. William Daniels as the ... controlled by a computer with artificial intelligence. Michael and KITT are brought in during situations where "direct action ...

https://en.wikipedia.org/wiki/Knight_Rider_(1982_TV_series)

... inventor of the Cardiac pacemaker Herbert Hauptman, Nobel Laureate Herman Hollerith, founder of The Tabulating Machine Company ... "Hidden Biases and Artificial Barriers Didn't Stop This Navy Officer." Julianne Simpson. September 3, 2020. https://www.afcea. ... org/content/hidden-biases-and-artificial-barriers-didn%E2%80%99t-stop-navy-officer "John C. Sagelhurst". Archived from the ...

https://en.wikipedia.org/wiki/List_of_people_from_Buffalo,_New_York

Canadian inventor of the artificial pacemaker John Page Hopps, Unitarian minister and spiritualist This disambiguation page ...

https://en.wikipedia.org/wiki/John_Hopps

The electrical impulses are generated by a small device called a neurostimulator - similar to an artificial cardiac pacemaker ...

https://en.wikipedia.org/wiki/Occipital_nerve_stimulation

Other major Canadian scientific contributions include the artificial cardiac pacemaker, mapping the visual cortex, the ...

https://en.wikipedia.org/wiki/Science_and_technology_in_Canada

Most artificial sweeteners have been discovered when accidentally tasted, including aspartame and saccharin. Ideas include the ... the implantable pacemaker[citation needed], the microwave oven, Scotchgard, Saran wrap, Silly Putty, Slinky, safety glass, ...

https://en.wikipedia.org/wiki/List_of_discoveries_influenced_by_chance_circumstances

Artificial Organs, 28 (1), pp. 99-102 Crevenna, R., Stix, G., Pleiner, J., Pezawas, T., Schmidinger, H., Quittan, M., Wolzt, M ... Electrical nerve stimulation in patients with cardiac pacemakers (2001) Physikalische Medizin Rehabilitationsmedizin ...

https://en.wikipedia.org/wiki/Richard_Crevenna

However, when the damage is so extreme that it is impossible to use the patient's own cells, artificial tissue cells are grown ... such as pacemaker or hip replacement) ". Modern medical devices and prostheses are often made of more than one material, so it ... Biomaterials are used in: Joint replacements Bone plates Intraocular lenses (IOLs) for eye surgery Bone cement Artificial ... Pal, Subrata (2013-08-31). Design of Artificial Human Joints & Organs. Springer Science & Business Media. ISBN 978-1-4614-6255- ...

https://en.wikipedia.org/wiki/Biomaterial

... design and develop medical devices such as artificial hearts and kidneys, pacemakers, artificial hips, surgical lasers, ... and medical professionals to design medical devices like artificial hearts, pacemakers, dialysis machines, and surgical lasers ...

https://en.wikipedia.org/wiki/Medical_equipment_management

Start Over You searched for: Subject Pacemaker, Artificial ✖ Remove constraint Subject: Pacemaker, Artificial Periodical ... 1. A Report on an Implantable Electronic Cardiac Pacemaker Creator: Kantrowitz, Adrian Date: February 1967 Publisher: American ...

https://profiles.nlm.nih.gov/spotlight/gn/catalog?f%5Breadonly_periodical_ssim%5D%5B%5D=Geriatrics&f%5Breadonly_subject_ssim%5D%5B%5D=Pacemaker%2C+Artificial&per_page=100&search_field=all_fields&sort=relevance&view=list

CMR in patients with MR conditional pacemakers provided diagnostic or management-changing information in the majority (63%) of ... Right-sided pacemakers were associated with less artefact than left-sided pacemakers. Late gadolinium enhancement imaging was ... Clinical value of cardiovascular magnetic resonance in patients with MR-conditional pacemakers Eur Heart J Cardiovasc Imaging. ... Pacemaker, Artificial* * Predictive Value of Tests * Retrospective Studies * Risk Assessment * Treatment Outcome ...

https://pubmed.ncbi.nlm.nih.gov/26588986/

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 ... The leadless pacemaker. www.acc.org/latest-in-cardiology/ten-points-to-remember/2019/06/10/13/49/the-leadless-pacemaker. ...

https://medlineplus.gov/ency/patientinstructions/000097.htm

Computer file; Format: electronic Publication details: Blackwell Publishing. Other title: PACE.Online access: Click here to access online Availability: Items available for loan: WHO HQ (1)Call number: 1540-8159. ...

https://kohahq.searo.who.int/cgi-bin/koha/opac-search.pl?q=su:%7BPacemaker%2C%20Artificial%7D

Artificial light also influences the pacemaker.. *Circadian rhythms need time to adjust to new sleep times, so changing work ... This is because the circadian pacemaker tends to run longer than 24 hours, which makes it easier to sleep later in the morning ...

https://www.cdc.gov/niosh/work-hour-training-for-nurses/longhours/mod2/18.html

Learn about Heart pacemaker or find a doctor at Mount Sinai Health System. ... Heart pacemaker. Cardiac pacemaker implantation; Artificial pacemaker; Permanent pacemaker; Internal pacemaker; Cardiac ... 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 ...

https://www.mountsinai.org/health-library/surgery/heart-pacemaker

artificial heart, Machine or mechanical pump that maintains blood circulation in the human body. ... Home Health & Medicine Anatomy & Physiology artificial heart artificial heart summary. Actions Cite verifiedCite ... artificial heart, Machine or mechanical pump that maintains blood circulation in the human body. The heart-lung machine, a ... Know about the use of artificial heart and its working mechanism. Cite verifiedCite ...

https://www.britannica.com/summary/artificial-heart

In the preoperative screening, physicians should inquire about artificial assistive devices, such as pacemakers, artificial ... Artificial heart valves and other valvular heart diseases. In addition to inquiring about the presence of a pacemaker, ... Pacemakers. The patient with a modern cardiac pacemaker is most likely at low risk for adverse outcomes from the use of ... Potential pacemaker interference is a consideration if using electrocautery, particularly with demand-type pacemakers. Heat ...

https://www.medscape.com/answers/1127055-156675/how-are-sleep-disorders-addressed-during-the-dermatologic-preoperative-evaluation-and-management

https://emedicine.medscape.com/article/1127055-overview

Artificial pacemaker surgery An artificial pacemaker is a small device that is put under the skin of your chest, below your ... A pacemakers battery can last up to 10 years. Your doctor can check the battery every year, and replace it when needed. ... A pacemaker makes small electrical currents that stimulate your heart muscle and help it pump regularly. ... One or two wires connect the pacemaker to the chambers of your heart. ...

https://www.healthywa.wa.gov.au/Articles/A_E/Common-medical-procedures-for-heart-conditions

Artificial heart valve. *. Heart defibrillator. or pacemaker. *Inner ear (cochlear) implants. *Insulin or chemotherapy port ... The strong magnetic fields created during an MRI can cause heart pacemakers and other implants to not work as well. They can ...

https://www.ucsfhealth.org/medical-tests/magnetic-resonance-angiography

pacemaker, artificial: A small electronic device generally placed in the chest to correct an irregular heartbeat. It generates ... pacemaker, natural: A specialized cluster of cells called the sinoatrial node in the top of the right atrium. The pacemaker ... prosthesis: An artificial device such as a hearing aid, artificial joint, or dentures that substitutes for a missing body part. ...

https://www.health.harvard.edu/j-through-p

Pacemaker or automatic defibrillator or artificial material in your heart veins or arteries? ...

https://wwwn.cdc.gov/Nchs/Nhanes/1999-2000/OHQ.htm

A battery-free light-powered pacemaker. *A potential tool for protecting crops from mercury pollution and possible mercury ... Home artificial intelligence It is possible to perform artificial intelligence using tiny nanomagnets that interact like ... It is possible to perform artificial intelligence using tiny nanomagnets that interact like neurons in the brain. Print Email ... The State of Artificial Intelligence at the Manufacturing Edge. The WZL is focused on a holistic approach to production ...

https://innovationtoronto.com/2022/05/it-is-possible-to-perform-artificial-intelligence-using-tiny-nanomagnets-that-interact-like-neurons-in-the-brain/?share=jetpack-whatsapp

Pacemaker. Artificial Heart Valve. Kidney or Bladder Problems. Diabetes. Auto-Immune Disease ...

https://hipaa.jotform.com/201964226277055

AN ARTIFICIAL JOINT 704 1. Yes 15,336 2. No 54 8. Not ascertained 20 9. DK or refused ... A PACEMAKER 206 1. Yes 15,839 2. No 54 8. Not ascertained 15 9. DK or refused ... ARTIFICIAL HEART VALVE 106 1. Yes 15,928 2. No 55 8. Not ascertained 25 9. DK or refused ...

https://wonder.cdc.gov/wonder/sci_data/surveys/nhis/type_txt/dfs94-f.htm

any electronic devices in your body such as a pacemaker. *artificial heart valves ...

https://www.cancerresearchuk.org/about-cancer/find-a-clinical-trial/a-study-comparing-breast-scans-to-diagnose-small-breast-cancers-in-dense-breasts-braid

Some would argue that it is permissible because it is artificial technology, comparable to a ventilator. Most would argue that ... The patient says she was told when the pacemaker was inserted that it could be shut off whenever she didnt want it. It is her ... Is It Permissible to Shut Off this Pacemaker?. Post Date: 04/03/2008 ... Many believe that a pacemaker may be regarded as any other medical treatment, and it may be treated as any other medical life- ...

https://cbhd.org/content/it-permissible-shut-pacemaker

Some of Medtronics key innovations include the worlds smallest pacemaker and artificial pancreas.As a leader in medical ... Some of Medtronics key innovations include the worlds smallest pacemaker and artificial pancreas. ...

https://finance.yahoo.com/news/10-super-safe-growth-stocks-204046051.html

Artificial limbs and surgical implants, including artificial joints and pacemakers. *Wheelchairs and other medical devices ... Performing surgical treatments like pacemaker implants or cardiac catheterization (inserting a long, thin tube into an artery ...

https://www.va.gov/dayton-health-care/locations/dayton-va-medical-center/

Engineering Heartbeats: The Evolution of Artificial Pacemakers. May 6, 2013. November 3, 2017. ...

https://illumin.usc.edu/category/volume-xv/issue-i-volume-xv/

He has an artificial. aortic valve and a pacemaker. He was hospitalized for 4 days. Then when he came home he had HUGE blisters ...

https://blogs.cdc.gov/safehealthcare/sepsis-awareness-month-why-more-important-than-ever/

1. Memorandum from Kenneth P. Liroff to Adrian Kantrowitz [on pacemaker study] Format: Text ...

https://profiles.nlm.nih.gov/spotlight/gn/catalog?f%5Bexhibit_tags%5D%5B%5D=technological&f%5Breadonly_creator_ssim%5D%5B%5D=Maimonides+Hospital+of+Brooklyn&f%5Breadonly_creator_ssim%5D%5B%5D=Liroff%2C+Kenneth+P.&per_page=100&search_field=all_fields&sort=readonly_title_ssim+asc&view=masonry

"So for instance implants, cardiac pacemakers, artificial joints, tumours, tampons or coils. ...

https://www.bild.de/news/bild-english/what-can-naked-scanners-really-see-10968446.bild.html

Compton, who has an artificial heart implant that uses an external pump, told police he was asleep when the fire started. When ... MORE: Judge: Pacemaker data can be used at Middletown arson trial. The case is believed to be the first of its kind to use data ... The data taken from Comptons pacemaker included his heart rate, pacer demand, and cardiac rhythms before, during and after the ... Comptons former defense attorney, Glenn Rossi, argued the pacemaker evidence should be thrown out because the search was an ...

https://www.journal-news.com/news/crime--law/middletown-man-asking-judge-throw-out-pacemaker-data-arson-case/yw29xc4zVOsfOfCiGPcq9M/

Artificial heart valve.. *Coronary artery stent.. *Heart pacemaker or defibrillator.. *Artificial joint. ...

https://www.bsuh.nhs.uk/documents/transrectal-ultrasound-of-prostate/

Second- or third-degree AV block (except in patients with a functioning artificial ventricular pacemaker) ... Sick sinus syndrome (except in patients with a functioning artificial ventricular pacemaker) ... Clonidine: Sinus bradycardia resulting in hospitalization and pacemaker insertion has been reported in association with the use ...

https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=3318e357-0660-44f4-8170-91a51bd762fb

The pacemaker. *The LCD display. *The artificial kidney. *The calculator. *E-mail ...

https://www.ifia.com/invention-nobel-prize-physics/

Everyone has their own natural pacemaker and for some, it goes wacky and they need an artificial pacemaker installed to tell ... Many of us go from artificial structure to artificial structure in life. From school to college, to work, fitting into a ... What if life is like some overbearing artificial pacemaker? ...

http://www.mulley.net/2009/06/29/our-own-natural-rhythm/

Magnetic resonance (MR) conditional pacemakers are increasingly implanted into patients who may need cardiovascular MR (CMR) subsequent to device implantation. (nih.gov)
It is important that doctors are aware of the implantation sites of pacemakers (fige 2) as well as their potential to migrate through the subcutaneous tissue. (bmj.com)
We present a case of an eighty three year old patient with history of dual chamber pacemaker implantation with recent generator change which showed interesting ECG findings. (bvsalud.org)
The US Food and Drug Administration (FDA) is reminding healthcare providers about the risk of major complications if cardiac perforation occurs during leadless pacemaker implantation. (medscape.com)
Cardiac perforation is a rare complication and the overall risk associated with leadless pacemaker implantation appears similar to that with traditional transvenous pacemakers , the agency says. (medscape.com)
Cite this: FDA Flags Cardiac Perforation Risks During Leadless Pacemaker Implantation - Medscape - Nov 17, 2021. (medscape.com)
The epidemiology of pacemaker implantation in the United States. (cdc.gov)

The strong magnetic fields created during an MRI can cause heart pacemakers and other implants to not work as well. (ucsfhealth.org)
Is it safe to use the laser over artificial joints or metal implants and hardware? (multiradiance.com)
Reduce respective artifacts caused by implants, artificial joints or pacemakers significantly. (siemens-healthineers.com)
The team behind the new fuel believes it could potentially be used as a coating on medical implants like artificial hearts or pacemakers. (yahoo.com)
Secondly, cremation forms may not be completed adequately (in one survey, nearly 50% of forms presented to a crematorium were completed insufficiently for the staff to proceed without further inquiry, 3 in another study, 6% of cremation forms had incorrect or incomplete details of pacemaker or radioactive implants, with over 25% of forms being unsatisfactorily completed 4 ). (bmj.com)
Some examples are artificial joints and orthopedic pins and rods, pacemaker electrodes, and titanium tooth implants. (genemedicine.net)
On April 14, Lillehei successfully implants the world's first portable pacemaker into a patient with heart block, saving the patient's life. (praythroughhistory.com)
hings like pacemaker batteries and other electronic implants, where their long lifespan will save the wearer from replacement surgeries. (wordpress.com)

Pacemaker or automatic defibrillator or artificial material in your heart veins or arteries? (cdc.gov)
Pacemakers and AICDs (automatic / artificial implantable cardioverter defibrillator) can help lengthen the lives of patients who suffer from these kinds of heart ailments. (differencebetween.net)

Over the past years, the medtech industry delivered major advances involving digital components relying on data in areas including cardiac pacemakers, deep brain stimulation, sleep disorders, intravascular ultrasound, artificial hips and knees, disease screening and diagnostics, anti-microbial resistance (AMR) testing, glucose monitors, and also solutions that are helping to fight COVID-19 and strengthening pandemic response and preparedness. (mecomed.com)

Traditional pacemakers have three parts: a generator, wires (leads) and sensors (electrodes). (heart.org)
Information from real-world use suggests that cardiac perforations associated with Micra leadless pacemakers are more likely to be associated with serious complications, such as cardiac tamponade or death, than with traditional pacemakers," the FDA said today in a letter to healthcare professionals . (medscape.com)

A new "leadless" pacemaker is a self-contained unit that is implanted in the right ventricle of the heart. (medlineplus.gov)
However, premarket clinical studies of the Micra leadless pacemaker (Medtronic) suggested major complications related to cardiac perforation appear to be more severe for those receiving a leadless pacemaker. (medscape.com)
The FDA is bringing this information to your attention as a reminder and to encourage you to report leadless pacemaker cardiac perforations and complications related to perforation to the manufacturer and the FDA," it notes. (medscape.com)
The Micra Transcatheter Pacing System in 2015 was the first leadless pacemaker approved in Europe, and was approved in the US the following year with a mandated postapproval study to help assess continued safety and efficacy. (medscape.com)
The Micra device is currently the only approved leadless pacemaker in the US. (medscape.com)

Pacemakers are usually indicated for patients who have an abnormal SA node (the natural biologic pacemaker that initiates the beating signal of the heart). (differencebetween.net)
An artificial pacemaker is a medical device that helps control abnormal heart rhythms. (justia.com)

Pacemakers are the commonest active implantable medical device in the UK (over 17 000 pacemakers are implanted annually, giving a pacemaker prevalence of 250 000). (bmj.com)

The electrical activity of the heart originates in a tissue located in the right atrium called the sinoatrial node, which is the innate pacemaker. (rigging.top)

1958 Colombian Dr. Alberto Vejarano Laverde and engineer Jorge Reynolds Pombo developed the first artificial pacemaker with internal electrodes and external electronic unit and implanted it into Gerardo Florez (70), a priest from Ecuador, who then lived another 18 years. (timelines.ws)
The implantable portions of a pacemaker system generally comprise three main components: a pulse generator, one or more wires called leads, and electrodes found on each lead. (justia.com)

These are called biventricular pacemakers. (medlineplus.gov)
Most biventricular pacemakers implanted today can also work as implantable cardioverter defibrillators (ICD). (medlineplus.gov)
Biventricular pacemakers (also called cardiac resynchronization therapy or CRT) use three leads. (heart.org)

In cases of recurring arrhythmia, an artificial pacemaker may be implanted to provide automatic correction when arrhythmia happens. (carondelet.org)

The pacemaker generator is then placed under the skin at this location. (medlineplus.gov)
A deceased 79 year old man with a permanent cardiac pacemaker was due to be cremated, but the pacemaker generator was not detectable by palpation. (bmj.com)

Larsson died in 2001 after receiving 26 different pacemakers. (timelines.ws)

existing artificial hearts reduce the heart's workload by pumping between beats or acting as an auxiliary ventricle and are suitable only as temporary replacements in patients awaiting transplant. (britannica.com)
The sinus node is the heart's natural pacemaker. (heart.org)
When the heart's natural pacemaker is defective, the heartbeat may be too fast, too slow or irregular. (heart.org)
An artificial pacemaker replaces the heart's defective natural pacemaker functions. (heart.org)

CMR and pacing data from consecutive patients with MR conditional pacemakers were retrospectively reviewed. (nih.gov)
CMR in patients with MR conditional pacemakers provided diagnostic or management-changing information in the majority (63%) of our cohort. (nih.gov)
In the largest study of its kind, funded by British Heart Foundation and published in the journal Circulation, researchers took routine CMR scans from more than 1,000 patients attending St. Bartholomew's Hospital and the Royal Free Hospital and used a new automated artificial intelligence technique to analyze the images. (medicaldesignbriefs.com)
Pacemakers are used on patients so that it can help regulate a normal heartbeat or heart pattern, most especially to those experiencing slow and irregular heartbeats. (differencebetween.net)
Despite the small sample size of this "study," it seems reasonable to infer that naming pacemakers/ICDs is not a universal notion for patients, which is a minor disappointment to my geeky disposition. (acc.org)
Elderly patients now represent an increasing proportion of the paced population, 7 so the prevalence of pacemakers in those who have died will increase. (bmj.com)
Eleven consecutive patients with complete heart block and dual chamber pacemakers were paced at three AV intervals (150, 200, 250 msec) and free running rates (60-93 bpm, mean 73 +/- 12 bpm) with simultaneous measurements of cardiac output, atrial contribution to left ventricular filling, left ventricular ejection fraction, and peak aortic velocity and acceleration by echo-Doppler techniques to define the optimum AV delay. (who.int)
These data suggest that it is difficult to generalize an optimum AV delay in patients with dual chamber pacemakers. (who.int)
Patients diagnosed with symptomatic heart block but not treated with artificial cardiac pacemaker insertion were excluded from the study. (bvsalud.org)
Evaluating the health-related quality of life (HRQOL) of patients who have pacemakers (PM) and explore the associations between HRQOL and sociodemographic and clinical variables and symptoms of anxiety and depression. (bvsalud.org)

The world's smallest pacemaker Medtronic Micra is displayed at the exhibition. (com.ng)

The patient's primary care physician requests an ethics consultant to address the question of whether this patient's pacemaker may be shut off. (cbhd.org)

The medical notes stated that the body contained a VVI cardiac pacemaker, inserted in 2003 for symptomatic bradycardia. (bmj.com)

Pacemakers can help keep your heart rhythm and heart rate at a safe level for you. (medlineplus.gov)
A pacemaker is a small battery-operated device that helps the heart beat in a regular rhythm. (heart.org)
Pacemaker to control the rhythm of the heart. (mindprod.com)
The pacemaker may speed up a slow heart rhythm, control a fast heart rhythm, and coordinate the chambers of the heart. (justia.com)
We have a wide range of clinical research trials ranging from new devices for heart rhythm management, artificial heart valves inserted 'minimally invasively' via the leg, to new coronary stents to manage coronary artery disease. (stvheart.com)

IMSEAR at SEARO: Acute hemodynamic effects of different atrioventricular intervals in dual chamber pacemakers: is there an optimum atrioventricular delay. (who.int)
Mohan JC, Sethi KK, Pandit N, Bhargava M, Arora R, Khalilullah M. Acute hemodynamic effects of different atrioventricular intervals in dual chamber pacemakers: is there an optimum atrioventricular delay. (who.int)
Conflicting data have been reported regarding adjustment of atrioventricular (AV) interval to maximise hemodynamic performance of dual chamber pacemakers. (who.int)
Cross stimulation and unusual ventricular activation in a patient with dual chamber pacemaker. (bvsalud.org)

Providers are also advised to read and carefully follow the instructions for use (IFU) and training for Medtronic's Micra pacemaker. (medscape.com)
Any adverse events or suspected adverse events related to the Micra Transcatheter Pacing System or any other pacemaker systems should be reported to the FDA through MedWatch , its adverse-event reporting program. (medscape.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)
When the heartbeat is slower than the pacemaker rate, the sensing device turns the pacemaker on again. (heart.org)
At the same time, it can mimic the action of pacemakers by regulating the heartbeat if ever it slows down to unacceptable levels. (differencebetween.net)

From smart unmanned vaccination capsules and artificial meat to the world's first complete carbon fiber supercar and the safest electric wheeled excavator, the ongoing third China International Import Expo (CIIE) in Shanghai has become a fest for high-tech products, showcasing consumer options for an exciting future. (com.ng)

1970 The first radioactive pacemaker was put into a patient in France. (timelines.ws)

The new method, developed by a team led by Imperial College London researchers, could slash the energy cost of artificial intelligence (AI), which is currently doubling globally every 3.5 months. (innovationtoronto.com)
Artificial intelligence that uses 'neural networks' aims to replicate the way parts of the brain work, where neurons talk to each other to process and retain information. (innovationtoronto.com)
Artificial intelligence has been used for the first time to instantly and accurately measure blood flow, in a study led by UCL and Barts Health NHS Trust. (medicaldesignbriefs.com)
Prof. James Moon (UCL Institute of Cardiovascular Science and Barts Health NHS Trust) says, "Artificial intelligence is moving out of the computer labs and into the real world of healthcare, carrying out some tasks better than doctors could do alone. (medicaldesignbriefs.com)
Artificial intelligence (AI) and machine learning (ML) have exploded in popularity as enterprises have sought to make better use of their data. (amazon.com)
Members of the artificial intelligence community bear an ominous resemblance to… the Sorcerer's Apprentice . (intelligence.org)
His research program aims to improve system efficiency and reduce inequity and mistrust by overcoming the barriers to developing and implementing novel artificial intelligence models (that is, algorithmically fair optimization, machine learning and deep learning models) in healthcare. (ottawaheart.ca)
Dr. Sun's research interests lie at the intersection of optimization, artificial intelligence, public health, and health equity. (ottawaheart.ca)
His passion lies in writing articles on the most popular IT platforms including Machine learning, DevOps, Data Science, Artificial Intelligence, RPA, Deep Learning, and so on. (mindmajix.com)

1958 Oct 8, Dr. Ake Senning installed the 1st fully implantable pacemaker in Stockholm. (timelines.ws)

They are not permanent pacemakers. (medlineplus.gov)
[1] She reluctantly consented to insertion of a permanent pacemaker. (cbhd.org)

Newer pacemakers weigh as little as 1 ounce (28 grams). (medlineplus.gov)
Some newer pacemakers are wireless. (heart.org)

Artificial cardiac stimulation aims to offer a better quality of life to those with severe cardiac problems. (bvsalud.org)

One or two wires connect the pacemaker to the chambers of your heart. (wa.gov.au)

The modern pacemaker weighs less than an ounce. (futureofpersonalhealth.com)

The data taken from Compton's pacemaker included his heart rate, pacer demand, and cardiac rhythms before, during and after the fire. (journal-news.com)

Building an Artificial Kidney: Medicine's Next Big Thing? (ivanhoe.com)

There are 2 kinds of pacemakers used only in medical emergencies. (medlineplus.gov)
a world innovator in pacemakers and medical technology. (praythroughhistory.com)

Other types of pacemakers can be used in severe heart failure . (medlineplus.gov)
100 bpm], severe arterial hypertension), as well as an artificial pacemaker. (who.int)

Black box" approaches, like artificial neural networks, are regarded with suspicion - even if they show a very high accuracy on the available data - because it is not feasible to prove that they will show a good performance on all possible input combinations. (intelligence.org)
Methods that are known to achieve a high predictive performance - e.g. support vector machines (SVMs) or artificial neural networks (ANNs) - are usually hard to interpret. (intelligence.org)

A pacemaker is a small, battery-operated device. (medlineplus.gov)
A pacemaker is a small, battery-operated electronic device which is inserted under the skin to help the heart beat regularly and at an appropriate rate. (mountsinai.org)
Demand pacemakers have a sensing device. (heart.org)
An artificial pacemaker is a small device that is put under the skin of your chest, below your collar bone. (wa.gov.au)
A device, such as a pacemaker . (clevelandclinic.org)
On the contrary, an AICD is a more sophisticated device than the pacemaker. (differencebetween.net)
2. The AICD is a more sophisticated device, not to mention, more expensive because it can do both defibrillation and cardioversion unlike the standard pacemaker. (differencebetween.net)
The Lake Oswego, Oregon-based device developer designed the Renamic Neo for implantable cardioverter defibrillators, pacemakers and implantable cardiac monitors. (massdevice.com)

Most pacemakers work only when they're needed (demand pacemakers). (heart.org)

Results of search for 'su:{Pacemaker, Artificial. (who.int)
Compton's former defense attorney, Glenn Rossi, argued the pacemaker evidence should be thrown out because the search was an invasion of Compton's constitutional rights and unreasonable seizure of his private information. (journal-news.com)

The prohibition on artificial birth control may make sense among elderly celibate men, but among the poor it enslaves families (and primarily women) to children who overwhelm available resources. (kcubes.com)

A pacemaker makes small electrical currents that stimulate your heart muscle and help it pump regularly. (wa.gov.au)
A pacemaker uses electrical pulses to prompt the heart to beat at a normal rate. (justia.com)
Though the term 'bioelectronic medicine' is relatively new, electrical stimulation has been used for the treatment of diseases since the invention of the artificial pacemaker in the early 1900s. (idtechex.com)

The pacemaker has leads that travel through a large vein to the heart, where the wires are anchored. (mountsinai.org)
The traditional pacemaker is connected to your heart through tiny wires (leads). (heart.org)

The quality of CMR was rated by an observer blinded to clinical details, and data on pacemaker and lead parameters were collected pre- and post-CMR. (nih.gov)

Some pacemakers can be used to stop a heart rate that is too fast ( tachycardia ) or that is irregular. (medlineplus.gov)
When it is above that rate, the pacemaker will stop sending signals to the heart. (medlineplus.gov)
1. AICD can do the function of the pacemaker (regulate the heart rate when it slows down) while the latter can't do the functions of the former. (differencebetween.net)

i have read about this diaphragm pacemaker. (alsforums.com)
from what i understand it can be very useful in keeping the diaphragm working, therefore the need for artificial ventillation is very diminished. (alsforums.com)

How does a pacemaker work? (heart.org)
Meanwhile, in 1932 in the United States, a physiologist was hard at work creating what he dubbed the first artificial pacemaker. (futureofpersonalhealth.com)

This card lists the details of your pacemaker and has contact information for emergencies. (medlineplus.gov)

Anatomy36

Organisms11

Diseases34

Chemicals and Drugs39

Analytical, Diagnostic and Therapeutic Techniques and Equipment41

Psychiatry and Psychology1

Phenomena and Processes29

Disciplines and Occupations3

Technology, Industry, Agriculture1

Information Science2

Named Groups1

Health Care6

Hierarchy of ventricular pacemakers. (1/1706)

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

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

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

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

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

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

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

Pacemaker, Artificial

Biological Clocks

Sinoatrial Node

Sick Sinus Syndrome

Heart Block

Equipment Failure

Atrioventricular Block

Bradycardia

Hyperpolarization-Activated Cyclic Nucleotide-Gated Channels

Circadian Rhythm

Electrodes, Implanted

Interstitial Cells of Cajal

Suprachiasmatic Nucleus

Device Removal

Arrhythmias, Cardiac

Equipment Safety

Heart Conduction System

Electrocardiography

Cyclic Nucleotide-Gated Cation Channels

Periodicity

Action Potentials

Atrioventricular Node

Electrophysiology

Defibrillators, Implantable

Flufenamic Acid

Arrhythmia, Sinus

Period Circadian Proteins

Syncope

Equipment Design

Heart Atria

Membrane Potentials

Atrial Function

Heart Rate

Atrial Fibrillation

Tachycardia

Foreign-Body Migration

Prosthesis Implantation

Ion Channels

Respiratory Center

Electric Power Supplies

Potassium Channels

Time Factors

Sinoatrial Block

Electromagnetic Phenomena

Neurons

Treatment Outcome

Patch-Clamp Techniques

Subclavian Vein

Electromagnetic Fields

Purkinje Fibers

Heart Injuries

Heart

Gastrointestinal Motility

Telemetry

Electrocardiography, Ambulatory

Tricuspid Valve Stenosis

Prosthesis-Related Infections

Cesium

Photoperiod

Follow-Up Studies

Financial Audit

Heart Ventricles

Syncope, Vasovagal

Tetrodotoxin

Bundle-Branch Block

Mortuary Practice

Dogs

Calcium

Equipment Reuse

Potassium

Bundle of His

Electric Stimulation

Floxacillin

Electric Fish

Equipment Failure Analysis

Electrophysiologic Techniques, Cardiac

Endocarditis

Household Articles

Electric Conductivity

Rabbits