Ballistocardiography: Technique of graphic representation of the movements of the body imparted by the ballistic forces (recoil and impact) associated with cardiac contraction and ejection of blood and with the deceleration of blood flow through the large blood vessels. These movements, quantitatively very minute, are translated by a pickup device (transducer) into an electrical potential which is suitably amplified and recorded on a conventional electrocardiograph or other recording machine.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Cumulative Trauma Disorders: Harmful and painful condition caused by overuse or overexertion of some part of the musculoskeletal system, often resulting from work-related physical activities. It is characterized by inflammation, pain, or dysfunction of the involved joints, bones, ligaments, and nerves.Internal Medicine: A medical specialty concerned with the diagnosis and treatment of diseases of the internal organ systems of adults.Coma, Post-Head Injury: Prolonged unconsciousness from which the individual cannot be aroused, associated with traumatic injuries to the BRAIN. This may be defined as unconsciousness persisting for 6 hours or longer. Coma results from injury to both cerebral hemispheres or the RETICULAR FORMATION of the BRAIN STEM. Contributing mechanisms include DIFFUSE AXONAL INJURY and BRAIN EDEMA. (From J Neurotrauma 1997 Oct;14(10):699-713)Poly A: A group of adenine ribonucleotides in which the phosphate residues of each adenine ribonucleotide act as bridges in forming diester linkages between the ribose moieties.Editorial Policies: The guidelines and policy statements set forth by the editor(s) or editorial board of a publication.Periodicals as Topic: A publication issued at stated, more or less regular, intervals.Fagopyrum: A plant genus of the family POLYGONACEAE that is used as an EDIBLE GRAIN. Although the seeds are used as cereal, the plant is not one of the cereal grasses (POACEAE).Authorship: The profession of writing. Also the identity of the writer as the creator of a literary production.User-Computer Interface: The portion of an interactive computer program that issues messages to and receives commands from a user.Publishing: "The business or profession of the commercial production and issuance of literature" (Webster's 3d). It includes the publisher, publication processes, editing and editors. Production may be by conventional printing methods or by electronic publishing.Blood Pressure Monitors: Devices for continuously measuring and displaying the arterial blood pressure.Tennis: A game played by two or four players with rackets and an elastic ball on a level court divided by a low net.Spiders: Arthropods of the class ARACHNIDA, order Araneae. Except for mites and ticks, spiders constitute the largest order of arachnids, with approximately 37,000 species having been described. The majority of spiders are harmless, although some species can be regarded as moderately harmful since their bites can lead to quite severe local symptoms. (From Barnes, Invertebrate Zoology, 5th ed, p508; Smith, Insects and Other Arthropods of Medical Importance, 1973, pp424-430)Graphite: An allotropic form of carbon that is used in pencils, as a lubricant, and in matches and explosives. It is obtained by mining and its dust can cause lung irritation.Wind: The motion of air relative to the earth's surface.Racquet Sports: Games in which players use a racquet to hit a ball or similar type object.Sphygmomanometers: Instruments for measuring arterial blood pressure consisting of an inflatable cuff, inflating bulb, and a gauge showing the blood pressure. (Stedman, 26th ed)Radiotherapy, Image-Guided: The use of pre-treatment imaging modalities to position the patient, delineate the target, and align the beam of radiation to achieve optimal accuracy and reduce radiation damage to surrounding non-target tissues.Radiotherapy Planning, Computer-Assisted: Computer-assisted mathematical calculations of beam angles, intensities of radiation, and duration of irradiation in radiotherapy.Radiotherapy, Computer-Assisted: Computer systems or programs used in accurate computations for providing radiation dosage treatment to patients.Four-Dimensional Computed Tomography: Three-dimensional computed tomographic imaging with the added dimension of time, to follow motion during imaging.Optical Devices: Products or parts of products used to detect, manipulate, or analyze light, such as LENSES, refractors, mirrors, filters, prisms, and OPTICAL FIBERS.Movement: The act, process, or result of passing from one place or position to another. It differs from LOCOMOTION in that locomotion is restricted to the passing of the whole body from one place to another, while movement encompasses both locomotion but also a change of the position of the whole body or any of its parts. Movement may be used with reference to humans, vertebrate and invertebrate animals, and microorganisms. Differentiate also from MOTOR ACTIVITY, movement associated with behavior.Reproducibility of Results: The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.Lunch: The meal taken at midday.Sleep: A readily reversible suspension of sensorimotor interaction with the environment, usually associated with recumbency and immobility.Sleep, REM: A stage of sleep characterized by rapid movements of the eye and low voltage fast pattern EEG. It is usually associated with dreaming.Sleep Disorders: Conditions characterized by disturbances of usual sleep patterns or behaviors. Sleep disorders may be divided into three major categories: DYSSOMNIAS (i.e. disorders characterized by insomnia or hypersomnia), PARASOMNIAS (abnormal sleep behaviors), and sleep disorders secondary to medical or psychiatric disorders. (From Thorpy, Sleep Disorders Medicine, 1994, p187)Wakefulness: A state in which there is an enhanced potential for sensitivity and an efficient responsiveness to external stimuli.Sleep Initiation and Maintenance Disorders: Disorders characterized by impairment of the ability to initiate or maintain sleep. This may occur as a primary disorder or in association with another medical or psychiatric condition.Sleep Apnea, Obstructive: A disorder characterized by recurrent apneas during sleep despite persistent respiratory efforts. It is due to upper airway obstruction. The respiratory pauses may induce HYPERCAPNIA or HYPOXIA. Cardiac arrhythmias and elevation of systemic and pulmonary arterial pressures may occur. Frequent partial arousals occur throughout sleep, resulting in relative SLEEP DEPRIVATION and daytime tiredness. Associated conditions include OBESITY; ACROMEGALY; MYXEDEMA; micrognathia; MYOTONIC DYSTROPHY; adenotonsilar dystrophy; and NEUROMUSCULAR DISEASES. (From Adams et al., Principles of Neurology, 6th ed, p395)Durable Medical Equipment: Devices which are very resistant to wear and may be used over a long period of time. They include items such as wheelchairs, hospital beds, artificial limbs, etc.Equipment and Supplies: Expendable and nonexpendable equipment, supplies, apparatus, and instruments that are used in diagnostic, surgical, therapeutic, scientific, and experimental procedures.Competitive Bidding: Pricing statements presented by more than one party for the purpose of securing a contract.Hospital Bed Capacity, 100 to 299Equipment and Supplies, Hospital: Any materials used in providing care specifically in the hospital.Industry: Any enterprise centered on the processing, assembly, production, or marketing of a line of products, services, commodities, or merchandise, in a particular field often named after its principal product. Examples include the automobile, fishing, music, publishing, insurance, and textile industries.Equipment Design: Methods of creating machines and devices.Electromagnetic Fields: Fields representing the joint interplay of electric and magnetic forces.Electromagnetic Phenomena: 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.Electromagnetic Radiation: Waves of oscillating electric and MAGNETIC FIELDS which move at right angles to each other and outward from the source.Sleep Apnea Syndromes: Disorders characterized by multiple cessations of respirations during sleep that induce partial arousals and interfere with the maintenance of sleep. Sleep apnea syndromes are divided into central (see SLEEP APNEA, CENTRAL), obstructive (see SLEEP APNEA, OBSTRUCTIVE), and mixed central-obstructive types.Surgery, Computer-Assisted: Surgical procedures conducted with the aid of computers. This is most frequently used in orthopedic and laparoscopic surgery for implant placement and instrument guidance. Image-guided surgery interactively combines prior CT scans or MRI images with real-time video.Plethysmography, Impedance: 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)Thrombophlebitis: Inflammation of a vein associated with a blood clot (THROMBUS).Foot: The distal extremity of the leg in vertebrates, consisting of the tarsus (ANKLE); METATARSUS; phalanges; and the soft tissues surrounding these bones.Vascular Stiffness: Loss of vascular ELASTICITY due to factors such as AGING; and ARTERIOSCLEROSIS. Increased arterial stiffness is one of the RISK FACTORS for many CARDIOVASCULAR DISEASES.Plethysmography: Recording of change in the size of a part as modified by the circulation in it.Leg: The inferior part of the lower extremity between the KNEE and the ANKLE.

Clinical experience with the portable electromagnetic ballistocardiograph. (1/6)

The purpose of ballistocardiography is to obtain a rough objective measurement of the strength of the heart beat. Recordings have been made with a portable electromagnetic instrument on 225 persons, some normal, others with many kinds of cardiovascular disease, to determine the usefulness of the ballistocardiograph. Tracings were made at certain stages of respiration at rest and after exercise. The ballistocardiograph can in some cases be the principal diagnostic instrument in distinguishing cardiac from extracardiac disease, in the early detection of coronary artery disease, and in the diagnosis of myocarditis. It also may aid in the diagnosis of high output failure, pericardial effusion, nicotine sensitivity and coarctation or other occlusive disease of the aorta.  (+info)

A simple ballistocardiographic system for a medical cardiovascular physiology course. (2/6)

Ballistocardiography is an old, noninvasive technique used to record the movements of the body synchronous with the heartbeat due to left ventricular pump activity. Despite the fact that this technique to measure cardiac output has been superseded by more advanced and precise techniques, it is useful for teaching cardiac cycle physiology in an undergraduate practical course because of its noninvasive application in humans, clear physiological and physiopathological analysis, and practical approach to considering cardiac output issues. In the present report, a simple, low cost, easy-to-build ballistocardiography system is implemented together with a theoretical and practical session that includes Newton's laws, cardiac output, cardiac pump activity, anatomy and physiology of the vessel circulation, vectorial composition, and signal transduction, which makes cardiovascular physiology easy to understand and focuses on the study of cardiac output otherwise seen only with the help of computer simulation or echocardiography. The proposed system is able to record body displacement or force as ballistocardiography traces and its changes caused by different physiological factors. The ballistocardiography session was included in our medical physiology course six years ago with very high acceptance and approval rates from the students.  (+info)

Removal of BCG artifacts using a non-Kirchhoffian overcomplete representation. (3/6)

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Quantitative ballistocardiography (Q-BCG) for measurement of cardiovascular dynamics. (4/6)

In the seventies of the past century ballistocardiography had been thought to be obsolete in cardiology for impossibility of objective calibration. In the present work the quantitative ballistocardiography (Q-BCG) for measurement of systolic force (F) and minute cardiac force (MF) in sitting subject was described. The new principle of piezoelectric transducer enabled to register the force caused by the heart and blood movement, which was not measured before. The calibration proved that the action of the force on the transducer was expressed quantitatively without the amplitude-, time-, and phase deformation. The close relationship of skeletal muscle force and F was proved. The F and MF changed under different physiological conditions (age, partial pressure of oxygen, body weight, skeletal muscle force). It was shown that the systolic force (F) and minute cardiac force (MF) are the physiological parameters neurohumorally regulated similarly as the heart rate or systolic volume.  (+info)

Some observations on the fluttering midline echo in echoencephalography. A ballistocardiac effect and suggested cause of rupture of the septum pellucidum. (5/6)

In cases of hydrocephalus, echoes from the region of the cerebral median segittal plane may show a fluttering variation both in amplitude and range. Evidence is presented that, in the case studied, these movements arose from the falx cerebri and that they were caused by ballistocardiac forces presumably setting the CSF in the enlarged lateral ventricles into resonance within the enlarged cranium. Similar movements would be expected in the lateral ventricular walls as well as the septum pellucidum when the latter is imperforate. It is suggested that the lowering of the resonant frequency of the ventricular CSF in cases of hydrocephalus with both large ventricles and large heads allows ballistic and acceleratory forces applied to the hydrocephalic head to cause large pressure changes between the two lateral ventricles with consequent lateral movement of the midline structures separating them and possible rupture of the septum pellucidum, as is commonly found in hydrocephalus.  (+info)

Respiratory challenge induces high frequency spiking on the static charge sensitive bed (SCSB). (6/6)

The static charge sensitive bed (SCSB) is a simple and noninvasive device used for the detection of sleep apnoea. In addition to episodes of apnoea or hypopnoea, heavy snorers commonly present with episodes of high frequency spiking on the SCSB. These spiking episodes have been claimed to represent partial upper airway obstruction during sleep, but the mechanism of their appearance is not known. We studied the SCSB spiking phenomenon in awake subjects during experimental respiratory challenge. One female and five male volunteers were studied whilst breathing freely, during hypoxia, hypercapnia and inspiratory and expiratory loading. Oxygen saturation, end-tidal carbon dioxide tension, minute ventilation, oesophageal pressure, electrocardiographic activity (ECG), blood pressure and the SCSB signals were monitored. During free breathing, the SCSB high frequency signal consisted of low amplitude complexes with close time relationship to the cardiac cycle. During respiratory challenge, spiking occurred. These spikes showed no time relationship to the cardiac cycle, but were time-linked to the onset of inspiration or expiration. Spike amplitude correlated with breathing frequency (r2 = 0.59; p < 0.005) and variation in oesophageal pressure (r2 = 0.57; p < 0.005). We conclude that during quiet, unobstructed breathing the static charge sensitive bed high frequency signal represents cardiac activity (ballistocardiogram), whereas during high-drive breathing high frequency spikes are produced. These spikes are respiratory in origin and are likely to represent fast components of respiratory movements. Our results support the use of static charge sensitive bed spiking as a noninvasive measure of breathing stimulation.  (+info)

The ballistocardiograph (BCG) is a measure of ballistic forces on the heart.[1] Ballistocardiography is a technique for producing a graphical representation of repetitive motions of the human body arising from the sudden ejection of blood into the great vessels with each heart beat.[2] It is a vital sign in the 1-20 Hz frequency range which is caused by the mechanical movement of the heart and can be recorded by noninvasive methods from the surface of the body. It was shown for the first time, after an extensive research work by Dr. Isaac Starr, that the effect of main heart malfunctions can be identified by observing and analyzing the BCG signal.[3] Recent work also validates BCG could be monitored using camera in a non-contact manner[4]. One example of the use of a BCG is a ballistocardiographic scale, which measures the recoil of the persons body who is on the scale. A BCG scale is able to show a persons heart rate as well as their weight. The term ballistocardiograph originated from the ...
This small volume is the first to appear on the subject of ballistocardiography. The sections on the history of the ballistocardiogram, on the types of apparatus, and the physical considerations in the construction of a ballistocardiograph are very interesting. The normal ballistocardiogram is described, but no statement is made as to how often "normal" ballistocardiograms are encountered in patients with clinical heart disease, and how often "abnormal" ballistocardiograms are found in patients with no clinical evidence of cardiovascular disease. As the authors state, "The full limits of a normal pattern have yet to be defined, and the significance of certain ...
B. M. Wright; A New Look at Ballistocardiography. Clin Sci Mol Med 1 September 1973; 45 (3): 21P. doi: https://doi.org/10.1042/cs045021P. Download citation file:. ...
A practical method of ballistocardiography, easily adaptable to routine office use, is described. The instrument utilized is a portable electromagnetic ballistocardiograph which records the body movements directly. One hundred normal subjects of all ages were first studied by this method. Observations upon the ballistocardiographic findings in patients with hypertensive and coronary artery heart disease are recorded; particular emphasis is placed upon a specific abnormality in the HIJK complex in the ballistocardiograms of many of these subjects.. ...
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0075] Optionally, other additives may be included in the present compositions comprising solvents and surfactants for use in dewatering. Such additives include compounds having antistatic properties; the ability to dissipate static charge from non-conductive substrates such as glass and silica. Use of an antistatic additive in the dewatering compositions of the present invention may be necessary to prevent spots and stains when drying water or aqueous solutions from electrically non-conductive parts such as glass lenses and mirrors. Most unsaturated fluoroether solvents of the present invention also have utility as dielectric fluids, i.e., they are poor conductors of electric current and do not easily dissipate static charge. Boiling and general circulation of dewatering compositions in conventional drying and cleaning equipment can create static charge, particularly in the latter stages of the drying process where most of the water has been removed from a substrate. Such static charge collects ...
Conductive foam or static dissipative foam or anti-static - that is the question…….. A static charge can be generated triboelectrically on all three types of material. The difference is the speed at which the static charge travels through the material when it makes contact with a conductive material or ground. This is a function of the resistivity of that material.. Conductive foams have bulk or isotropic conductivity. They have a volume resistivity of less than 104 ohms.cms or a surface resistivity of less than 104 ohms/sq according to the ESD Association.. Static Dissipative foams offer a slower, more controlled transfer of a static charge and have volume resistivity in the range 104 -- 1011 ohms.cms and surface resistivity between 104 and 1011 ohms /sq. These classifications vary between standards.. Anti-static foams are generally pink and are characterised by having a surface resistivity between 1010 and 1012 ohms although some may have surface resistivity higher than this. They may ...
0034] Each X in the formula (I) above and for the formula/structures (II) through (Va-d) below is independently selected from the group consisting of: any leaving group, in one example; halogen ions, hydrides, C1 to C12 alkyls, C2 to C12 alkenyls, C6 to C12 aryls, C7 to C20 alkylaryls, C1 to C12 alkoxys, C6 to C16 aryloxys, C7 to C8 alkylaryloxys, C1 to C12 fluoroalkyls, C6 to C12 fluoroaryls, and C1 to C12 heteroatom-containing hydrocarbons and substituted derivatives thereof in a more particular example; hydride, halogen ions, C1 to C6 alkyls, C2 to C6 alkenyls, C7 to C18 alkylaryls, C1 to C6 alkoxys, C6 to C14 aryloxys, C7 to C16 alkylaryloxys, C1 to C6 alkylcarboxylates, C1 to C6 fluorinated alkylcarboxylates, C6 to C12 arylcarboxylates, C7 to C18 alkylarylcarboxylates, C1 to C6 fluoroalkyls, C2 to C6 fluoroalkenyls, and C7 to C18 fluoroalkylaryls in yet a more particular example; hydride, chloride, fluoride, methyl, phenyl, phenoxy, benzoxy, tosyl, fluoromethyls and fluorophenyls in yet a ...
Our morning routine could be appended to something like "breakfast, stretching, sit on a medical examiner, shower, then commute." If we are speaking seriously, we dont always get to our morning stretches, but a quick medical exam could be on the morning agenda. We would wager that a portion of our readers are poised for that exam as they read this article. The examiner could come in the form of a toilet seat. This IoT throne is the next device you didnt know you needed because it can take measurements to detect signs of heart failure every time you take a load off.. Tracking heart failure is not just one test, it is a buttload of tests. Continuous monitoring is difficult although tools exist for each test. It is unreasonable to expect all the at-risk people to sit at a blood pressure machine, inside a ballistocardiograph, with an oximeter on their fingers three times per day. Getting people to browse Hackaday on their phones after lunch is less of a struggle. When the robots overthrow us, this ...
Synonyms for cardiographs in Free Thesaurus. Antonyms for cardiographs. 2 synonyms for cardiograph: electrocardiograph, ballistocardiograph. What are synonyms for cardiographs?
Yes, it cant be grounded or it will be rendered ineffective. At the high voltages of a perceptible static charge (3-4kV), if the plant touches even a barely conductive object, the charge will quickly bleed away.. No need to be careful during watering. Ive never been zapped doing that, and even if I was, its completely harmless. I understand what the zap is, but cats dont; and thats a big part of what makes it work. Especially when they test it by seeing how close they can sniff without getting zapped, and the static attraction makes a leaf *move* and close the gap to zap their nose. That freaks them out and usually puts a permanent end to them messing with the plant, even if the ionizer module is then removed.. A thin stainless steel rod driven into the soil conducts the charge into the plant, even if the soil is almost dry, and wont rust.. But if leaves have pointy tips, it may generate an slight ionic wind that dries the tips out quicker. Increasing watering a bit solved this.. A couple ...
Most] Strat® style guitars in modern times come with plastic pickguard assemblies. Pickups, switches, knobs all mount to this pickguard, as Im sure you already know. Last night I discovered the strangest thing. When I run my hand or finger(s) across the pickguard, even while the left hand is touching the string (meaning I should be grounded)--when I run my finger across the plastic without touching any of the [metal] components, I hear a static type noise! This is totally bizarre and something I have never encountered before. I thought it was the guitar but when I tried the same thing with the Mini Strat® on another amplifier... same thing. Its not the guitar, its me! What the heck is going on?! Am I somehow creating a static charge when my hand runs across the plastic that the pickups are responding to? How can this be? If so, what the heck am I going to do to stop it? A ground strap? I should already be grounded when I touch the strings. Anti-static spray? This is soooo weird ...
NovaClean Floor Clean is an all-purpose cleanroom cleaner filtered to 0.1 microns. At the recommended dilution the formula claims sodium and potassium levels detectable only in parts per billion. With no mobile ions the NovaClean will not generate a static charge and with no residue build up it will not affect the efficiency of conductive flooring. NovaClean Floor Clean is a concentrate which will yield 60-128 gallons of cleaning solution per gallon container. 4 single gallons per case.. ...
What is the difference between Polyethylene and Polypropylene? Polyethylene has a lower static charge.Polypropylene has a comparatively higher static charge
Not many people realize the damage that static energy can cause on electronic devices. It is very crucial to understand that due to the reduced size of the electronic circuits and its pathways, the possibility of static energy damage has increased. With that said, there are now protective packaging techniques and materials used by the electronic industry to prevent damages.. This is where static shielding bag comes into the picture. These bags are very affordable packaging supplies that can guard electronic merchandise from the possible damages done by static charges. These bags are very helpful when packing and shipping Electro Static Discharge Sensitive or ESDS products. Electronic providers and even normal citizens can purchase these bags from a trusted packaging and shipping supplier, such as PackagingSupplies.com. Anti-Static Bags: An Overview. Anti static bags or commonly known as a static shielding bag are designed to safely pack precious electronic components which are vulnerable to ...
When a glass rod is rubbed with silk, the rod develops a static charge and will attract small pieces of paper, according to HowStuffWorks. The charge develops because glass is positively charge,...
For instance knitting yarn is sold in a variety of weights with both the weight and length given. A common medium gauge ball of wool would be 100grams/200meters; two meters per gram; 1mG would be 2mm. The yarn comes as a single strand, two, three, four, or six strand, with three strand more common around here, so for greater resolution you can use one strand of a multi-strand yarn. There is also cotton cord and sewing thread available in large spools. I dont know if they are marked with both weight and length so they may take a little more work to get weight per unit length. Use either cotton or wool fibers for this, the static charge from synthetics will drive you crazy ...
Silk particles of different sizes and shapes were produced by milling and interactions with a series of polar and non-polar gaseous probes were investigated using an inverse gas chromatography technique. The surface energy of all silk materials is mostly determined by long range dispersive interactions such as van der Waals forces. The surface energy increases and surface energy heterogeneity widens after milling. All samples have amphoteric surfaces and the concentration of acidic groups increases after milling while the surfaces remain predominantly basic. We also examined powder compression and flow behaviours using a rheometer. Increase in surface energy, surface area, and static charges in sub-micron air jet milled particles contributed to their aggregation and therefore improved flowability. However they collapse under large pressures and form highly cohesive powder. Alkaline hydrolysis resulted in more crystalline fibres which on milling produced particles with higher density, lower ...
These are formulas for Fabric Softeners with Rewoquat® WE 45, which exhibits a pleasant and soft hand, good rewet, and a noticeably reduced static charge.
it dont just sound like you have dust on your sensor. you do have dust on your sensor. at this point you have 3 options. you can do what nikon and canon recomend and blow the dust out with a blower bulb at wich point your head may explode from the frustration of NOT getting the dust of since it clings to it through static charge. the next and most stress free way to do it is to find a local camera shop that will clean it for you (not all will do this for you however). the service is available here in okc for 85 smakaronies. The should use a stero scope to get down there and get every piece of dust off so that your sensor will be back to the original shape absolutely no dust. or you can be brave and make a small investment on ecipse cleaning solution and cleaning swabbs. the solution is streakless after it dries. also get a special set of cleaning brushes that you can swipe across the sensor without scratching the sensor. as i said the method i recomend is paying the mola to have someone else do ...
... EC 2.1.3 Carboxy- and Carbamoyltransferases Pages in category EC 2.1.3 Additional recommended knowledge Dont let static charges disrupt
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The K-SVD algorithm is a highly effective method of training overcomplete dictionaries for sparse signal representation. In this report we discuss an efficient implementation of this algorithm, which both accelerates it and reduces its memory consumption. The two basic components of our implementation are the replacement of the exact SVD computation with a much quicker approximation, and the use of the Batch-OMP method for performing the sparse-coding operations. Batch-OMP, which we also present in this report, is an implementation of the Orthogonal Matching Pursuit (OMP) algorithm which is specifically optimized for sparse-coding large sets of signals over the same dictionary. The Batch-OMP implementation is useful for a variety of sparsity-based techniques which involve coding large numbers of signals. In the report, we discuss the Batch-OMP and K-SVD implementations and analyze their complexities. The report is accompanied
Coughing is a familiar, yet complex reflex action that functions to clear material from the airway. It protects the airway from irritants, saliva, or foreign particles that may have been inhaled (aspirated), and secretions, cellular debris, and microbes generated by the lungs or bronchial tree. Coughing can be involuntary; a reaction to inhaling a foreign particle or wayward food particle, or voluntary, intentionally taking a deep breath to clear mucus from the throat.
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Looking for posterior vein of septum pellucidum? Find out information about posterior vein of septum pellucidum. blood vessel that returns blood to the heart heart, muscular organ that pumps blood to all parts of the body. The rhythmic beating of the heart is a... Explanation of posterior vein of septum pellucidum
Consumer Reports, a non-profit US-based product-testing magazine, reported in October 2003 that air ionisers do not perform to high enough standards compared to conventional HEPA filters. The exception was a combination unit that used a fan to move air while ionizing it. In response to this report, The Sharper Image, a manufacturer of air ionisers (among other products), sued Consumers Union (the publishers of Consumer Reports) for product defamation. Consumer Reports gave the Ionic Breeze and other popular units a "fail" because they have a low Clean Air Delivery Rate (CADR). CADR measures the amount of filtered air circulated during a short period of time, and was originally designed to rate media-based air cleaners. The Sharper Image claimed that this test was a poor way to rate the Ionic Breeze, since it does not take into account other features, such as 24-hour-a-day continuous cleaning, ease of maintenance, and silent operation. The United States District Court for the Northern District ...
2. BASIC ELECTRICITY. ELECTRICITY AND MAGNETISM BASICS - It all starts with the electrons moving around atoms. Electricity is the movement of electrical charge from one place to another. Electric charges do not exist without their associated electric and magnetic fields. This module will introduce you to many of the basic concepts involved with electricity and magnetism. MATTER - Matter is physically everything that exists that we can touch and feel. Matter consists of atoms. Now we will introduce you to the structure of atoms, talk about electrons and static charge, moving charges, voltage, resistance, and current. You will learn about the properties of magnets and how magnets are used to produce electric current and vice versa. All matter can be classified as being either a pure substance or a mixture. Matter can exist as either a solid, liquid, or a gas and can change among these three states of matter. In electronics the most important matter are conductive metals, and non-conductive ...
The invention relates to methods and apparatuses that reduce problems encountered during coating of a device, such as a medical device having a cylindrical shape. In an embodiment, the invention includes an apparatus including a bi-directional rotation member. In an embodiment, the invention includes a method with a bi-directional indexing movement. In an embodiment, the invention includes a coating solution supply member having a major axis oriented parallel to a gap between rollers on a coating apparatus. In an embodiment, the invention includes a device retaining member. In an embodiment, the invention includes an air nozzle or an air knife. In an embodiment, the invention includes a method including removing a static charge from a small diameter medical device.
... ,These handy dispensers save space and organize gloves, safety glasses, wipers, hats, and other garb. They are the perfect benchtop storage bins for small parts used in labs, processing and manufacturing. Clear static-dissipative PVC eliminates static charges and the particles they attract. Open-slo,biological,biology supply,biology supplies,biology product
Supercapacitors store static charge, as opposed to chemical potential. This makes them more efficient and faster than batteries. So why arent we using them already?
This paper describes two approaches for accomplishing interactive feature analysis by overcomplete multiresolution representations. We show quantitatively that transform coefficients, modified by an adaptive non-linear operator, can make more obvious unseen or barely seen features of mammography without requiring additional radiation. Our results are compared with traditional image enhancement techniques by measuring the local contrast of known mammographic features. We design a filter bank representing a steerable dyadic wavelet transform that can be used for multiresolution analysis along arbitrary orientations. Digital mammograms are enhanced by orientation analysis performed by a steerable dyadic wavelet transform. Arbitrary regions of interest (ROI) are enhanced by Deslauriers-Dubuc interpolation representations on an interval. We demonstrate that our methods can provide radiologists with an interactive capability to support localized processing of selected (suspicion) areas (lesions). Features
Over the last few years, the development of multi-channel sensors motivated interest in methods for the coherent processing of multivariate data. Some specific issues have already been addressed as testified by the wide literature on the so-called blind source separation (BSS) problem. In this context, as clearly emphasized by previous work, it is fundamental that the sources to be retrieved present some quantitatively measurable diversity. Recently, sparsity and morphological diversity have emerged as a novel and effective source of diversity for BSS. We give here some essential insights into the use of sparsity in source separation and we outline the essential role of morphological diversity as being a source of diversity or contrast between the sources. This paper overviews a sparsity-based BSS method coined Generalized Morphological Component Analysis (GMCA) that takes advantages of both morphological diversity and sparsity, using recent sparse overcomplete or redundant signal representations. GMCA
Part of Mosbys successful monograph series, CARDIOVASCULAR PHYSIOLOGY presents fundamental concepts clearly and concisely. Students gain a solid understanding on how the cardiovascular system functions in both health and disease. Throughout, excellent illustrations and consistent pedagogical features focus student learning. In addition, the clinical commentaries help students apply what theyve learned to real-life clinical situations.Berne, Robert Matthew is the author of Cardiovascular Physiology, published 2000 under ISBN 9780323011273 and ISBN 0323011276. [read more] ...
Purchase Cardiovascular Physiology: Microcirculation and Capillary Exchange - 1st Edition. Print Book & E-Book. ISBN 9780080268194, 9781483189956
Matthew R. Zeglinski, Adel Rezaei Moghadam, Sudharsana R. Ande, Kimia Sheikholeslami, Pooneh Mokarram, Zahra Sepehri, Haleh Rokni, Nima Khadem Mohtaram, Mansour Poorebrahim, Anahita Masoom, Mehnosh Toback, Niketa Sareen, Sekaran Saravanan, Davinder S. Jassal, Mohammad Hashemi, Hassan Marzban, Dedmer Schaafsma, Pawan Singal, Jeffrey T. Wigle, Michael P. Czubryt, Mohsen Akbari, Ian M.C. Dixon, Saeid Ghavami, Joseph W. Gordon, Sanjiv ...
Looking for online definition of cystic septum pellucidum in the Medical Dictionary? cystic septum pellucidum explanation free. What is cystic septum pellucidum? Meaning of cystic septum pellucidum medical term. What does cystic septum pellucidum mean?
United States atent O ANTISTATIC BACKING LAYERS FOR PHOTO- GRAPHIC FILM Raymond J. Walford, Binghamton, N.Y., assignor to General Aniline & Film Corporation, New York, N.Y., a corporation of Delaware N Drawing. Filed Jan. 2, 1957, Ser. No. 632,006 Claims. (CI. 96-87) This invention relates to photographic film and particularly to a photographic film having antistatic properties. It is well known that photographic films have a pronounced tendency to generate static electricity. This static can be formed during the manufacture of the film base; during subsequent emulsion coating, trimming and packaging operations, or by operation in the camera, particularly where a series of pictures is taken in rapid succession, for instance, in motion picture cameras and cameras used for X-ray fiuorography. The discharge of these static charges, after a photosensitive emulsion coating has been applied to the film base, causes typical static markings on the photographic emulsion and these become visible upon ...
XFusion Keratin Hair Fibers are made from all-natural keratin protein that bind with existing hair to instantly make hair look thicker and fuller. Keratin Hair Fibers are able to intertwine with existing hair because of their innate static charge, which creates a magnetic effect between the Hair Fibers and your hair.
Research Areas: Statistical Signal Processing, signal Inference, source separation, music analysis and transcription, noise reduction, audio restoration, multiple channel audio, sparse/overcomplete models, sensor fusion, multiple object tracking, detection, radar, sonar. ...
Source: Sanctuary Centers of Santa Barbara. Santa Barbara, CA - September 4, 2017 - September is National Recovery Month, a sweeping initiative to increase understanding and support of mental and substance use disorders. In light of this years theme that highlights the value of family and community, Sanctuary Centers of Santa Barbara (SCSB) and Santa Barbara Neighborhood Clinics (SBNC) will host "Better Together, a day to celebrate the idea that caring for our most vulnerable citizens is what defines a strong community.. "Better Together" will be held at Sanctuary Centers Outpatient Mental Health building, 1136 De La Vina Street, Santa Barbara, CA 93101 from 10am until 4pm on September 14, 2017. While the event is open to all area residents who have been affected by mental health challenges, SCSB and SBNC will also be joined by partner organizations including the Santa Barbara County Probation Department, the Santa Barbara County Sheriffs Office, Pacific Pride Foundation, Al-Anon, Santa ...
Background and Goal: The rapid development of computer technology makes simulation of cardiovascular physiology and pathology possible. The current work presents a scientifically based cardiovascular model, with a self-explanatory interface. Material and Methods: An electrical analogue of the cardiovascular system including resistances, capacitances and inductances was constructed. The contractile function of the cardiac atria and ventricles are represented by time-varying elastances. Valvular function, pericardial volume, ventricular interaction and intrathoracic pressure are represented by constants and functions, which can interact. Pressures, flows and volumes are recalculated every millisecond and presented on-line as numerical and high-resolution graphics. Results and Discussion: The validity of the simulation models is based on the references (1-4). The software makes it possible to illustrate a great diversity of circulatory pathological findings including systolic and diastolic heart ...
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Cardiovascular Perfusion is one of the newest and most challenging professions in medicine today. The cardiovascular perfusionist is a highly skilled, allied health professional trained and educated specifically as a member of the open heart, surgical
Cindy-I dont know what to think. Ive been googling and from what I can find it is so very rare to have it as an isolated finding. Im thinking it could be one of two thing. One-they werent necessarily looking for the other anomalies, so it might not be isolated. if it wasnt part of the routine anatomy stuff, they might not have seen other weird stuff. The stuff they DID look at seemed normal, but on the other hand, I dont know if they were looking for a pituitary gland or anything like that. Two-They COULD have missed it, but she looked for a LONG time. She has 25 years experience in ultrasound and the Dr. said there was a slim chance she missed it, if it was there to begin with. The Dr. just mentioned the other persons story, but I know NOTHING about that person. For all I know, they could have had their U/S done at 18 weeks, in which case, it still might have needed the extra 2 weeks or so to "catch up" The Dr. tried to reassure me, but he also recommended a peri. Im just hoping that it ...
The goal of this course is to understand the concepts and mechanisms of systemic cardiovascular physiology in human and a variety of animal systems. The goal of this course is to understand the concepts and mechanisms of systemic cardiovascular physiology in human and animal systems. The course assumes a basic knowledge of human or animal physiology. We build on that knowledge by examining regulation and control of systems as well as their structure-function relationships. We will also introduce pathophysiological mechanisms relevant for clinical diagnosis and therapy. There is substantial emphasis on engineering approaches, quantitative methods, and simulation ...
Powered by the acalog™ academic catalog management system, this is The University of Scrantons Web site detailing its undergraduate and graduate catalogs as well as its student handbook. Founded in 1888, The University of Scranton is a nationally recognized Catholic and Jesuit university in Pennsylvanias Pocono Mountains region, offering 59 undergraduate and 25 graduate programs to approximately 6,000 students.
Learn about Winona State University physiology courses. Qualifications for nursing programs vary widely. Learn about the various medical specializations available within technical training programs.
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Prognosis : Respiratory Challenge yourself with the varied clinical presentations of pulmonary disease via the clinical cases brought to you by Prognosis : Respiratory.All 24 clinical cases are based on real-life patients an...
In this free physiology course you will be introduced to the main topics in cell physiology such as the major components of a typical animal cell.
TY - JOUR. T1 - Gene isolation with cDNA probes from identified aplysia neurons. T2 - Neuropeptide modulators of cardiovascular physiology. AU - Nambu, John R.. AU - Taussig, Ronald. AU - Mahon, Anne C.. AU - Scheller, Richard H.. PY - 1983. Y1 - 1983. N2 - The Aplysia abdominal ganglion neurons, R3-R14, modulate cardiovascular activity. In vitro translations of poly(A)+ RNA from these cells suggest that they contain a prevalent mRNA encoding a 14 kd protein. Utilizing differential screening techniques with 32P-labeled cDNA synthesized from the poly(A)+ RNA of identified neurons, we isolated the corresponding gene. The Aplysia haploid genome contains a single copy of this sequence, which is interrupted by two large introns and spans ∼7 kb of genomic DNA. The R3-R14 neurons specifically express this gene, resulting in the synthesis of a 1.25 kb mRNA not found in other abdominal ganglion cells or in the head ganglia. The gene was shown to encode a 13.5 kd precursor, which is proteolytically ...
In more than 20 years of clinical activity I worked at three academic university hospitals in two European countries, getting a broad overview and being involved in multiple teaching activities in the fields of anaesthesiology and intensive care medicine. My PhD thesis at the University Hospital in Dusseldorf, germany included numeral studies on cardiovascular physiology, and was completed in 1999 after which I got my Habilitation (Associate Professor, Privat-Dozent). I was appointed as a full Professor of Clinical and Experimental Anaesthesia at the University of Rostock, Germany in 2004, and as full Professor of Anaesthesia and Cardiovascular Physiology at the University Medical Center in Groningen, The Netherlands in 2010. At present, I run an active research group on cardiovascular physiology and hemodynamic monitoring at this Dutch University hospital ...
Biomedical engineering is a discipline that is multidisciplinary by definition. The days when medicine was left to the physicians, and engineering was left to the engineers, seem to have passed us by. I have searched for an undergraduate/graduate level biomedical fluid mechanics textbook since I began teaching at Rose-Hulman in 1987. I looked for, but never found, a book that combined the physiology of the cardiovascular and pulmonary systems with engineering of fluid mechanics and hematology to my satisfaction, so I agreed to write a monograph. ...
Information about Miles College physiology courses. Seek out accredited nursing programs for the best training. Given a brief hospital internship or prior work experience, you can expect a great return on your medical education.
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The working groups of Profs Hecker and Korff in the Department of Cardiovascular Physiology are constantly looking for highly motivated master students to join their respective team. Candidates should have a keen interest in basic biomedical research on the cardiovascular system at the molecular, cellular and organ level employing state-of-the-art methods and techniques to investigate human cellular as well as animal cell, in situ, ex vivo and in vivo model systems. For more information on the research of the respective working groups please click here Hecker. Korff. If you are interested, please do not hesitate to contact the respective group head by e-mail. [email protected] [email protected] ...
The working groups of Profs Hecker and Korff in the Department of Cardiovascular Physiology are constantly looking for highly motivated master students to join their respective team. Candidates should have a keen interest in basic biomedical research on the cardiovascular system at the molecular, cellular and organ level employing state-of-the-art methods and techniques to investigate human cellular as well as animal cell, in situ, ex vivo and in vivo model systems. For more information on the research of the respective working groups please click here Hecker. Korff. If you are interested, please do not hesitate to contact the respective group head by e-mail. [email protected] [email protected] ...
Some carbon filters are treated with additional compounds like potassium iodide or potassium permanganate which boost the carbon filters ability to catch Volatile Organic Compounds (VOCs) and other chemically reactive gases. Activated carbon filters adsorb a larger spectrum of contaminants. AllerAir air purifiers use an activated carbon filtration system to effectively clean indoor air. AllerAir versions include a cylindrical shape for optimum air flow, an effective four-stage filtration system, plus a quiet fan. Electrostatic Filters. Like Activated Carbon filters, Electrostatic filters bring pollutants. Rather than carbon, Electrostatic filters use electrostatic fees to clean the air. Electrostatic charges are created by pushing air through a maze of static vulnerable fibers. As airborne particles move past the static vulnerable fibers, they become drawn to the static charge and are recorded inside the filter. The particles remain on collector plates until they are hand washed or removed by a ...
Keeping your circulation going

All life on Earth developed under the influence of gravity. Our cardiovascular system is attuned perfectly to the condition of gravity. Yet it continues to work within astronauts in space. How is this possible? What makes our cardiovascular system so flexible? What rules govern the system?
Get info about Coahoma Community College physiology courses. You can enter nursing with either an associates degree or BSN. As a licensed vocational nurse (LVN), you may provide patient care under the supervision of a registered nurse (RN).
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The structures and compositions of the body are addressed in this comprehensive Anatomy and Physiology Course designed for all holistic therapy students.
The KIP department focuses on these primary areas of research: Integrative Physiology, Human Neuromechanics, Molecular Physiology, and Cardiovascular Physiology
Anatomy This lesson covers the anatomy of the cardiovascular system in great detail. It should be used in conjunction with the Cardiovascular Physiology lesson. Objective "light bulb" tabs complete with student objectives or "SWBATS" for students to drag and read.
The present book covers the basic principles of cardiovascular physiology, pathophysiology and advanced pharmacology with particular emphasis on cellular mechanisms of drug action. It provides an update on the progress made in several aspects of cardiovascular diseases so that it might kindle scientists and clinicians alike in furthering basic and translational research. In addition, the book is expected to fill imperative gaps in understanding and optimally treating cardiovascular disease ...
This blog stands for faith in God and better stroke awareness. Everyone should be aware of stroke signs and know what to do. The life you save may be your own. Toward that end, stroke survivors and families are invited to share comments or stories. This is not designed to give anyone medical advice - we might talk about stroke care in general but always, always seek appropriate medical advice ...
Purpose: To develop a robust and real-time surface reconstruction method on point clouds captured from a 3D surface photogrammetry system. Methods: The authors have developed a robust and fast surface reconstruction method on point clouds acquired by the photogrammetry system, without explicitly solving the partial differential equation required by a typical variational approach. Taking advantage of the overcomplete nature of the acquired point clouds, their method solves and propagates a sparse linear relationship from the point cloud manifold to the surface manifold, assuming both manifolds share similar local geometry. With relatively consistent point cloud acquisitions, the authors propose a sparse regression (SR) model to directly approximate the target point cloud as a sparse linear combination from the training set, assuming that the point correspondences built by the iterative closest point (ICP) is reasonably accurate and have residual errors following a Gaussian distribution. To ...
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Inhibition of cardiac ErbB2 signaling in vivo leads to cardiomyopathy in the presence of anthracyclines or pressure overload but also in the apparent absence of any stress factor on the heart. Trastuzumab initially caused cardiac dysfunction in up to 7% of patients when used as a single agent and in up to 27% when combined with anthracyclines. Severe CHF, New York Heart Association class III and IV, occurred in 16% of patients treated with a combination of trastuzumab and anthracyclines.46 More recent studies incorporating well-designed prospective cardiac monitoring suggest a lower incidence of symptomatic CHF (up to 4% for the trastuzumab-anthracycline combination). Nevertheless, asymptomatic cardiac dysfunction still occurs in ,14% of patients receiving trastuzumab with anthracyclines and in 7% receiving trastuzumab alone.47. Despite extensive research, cardiotoxic effects of trastuzumab, and ErbB2 inhibition in general, have remained difficult to explain. Trastuzumab cardiotoxicity appears ...
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Physiologyplus has put together MCQ Physiology Cardiovascular System Questions and Answers, from various Physiology exams and tests for health colleges and universities, online Physiology courses, and other medical training programs. Taking our Physiology practice MCQs will help you earn better grades in your Physiology courses. This will pave the way for your medical degree,nursing degree, […]. ...
Axial T2 image through the mid brain demonstrates absence of the septum pellucidum. Coronal T2 images again demonstrate absence of the septum pellucidum as well as hypoplasia of the optic tracts, chiasm and nerves.
Results: Of 214 fetuses presenting with absence of the cavum septum pellucidum, 18 (8.4%) were classified prenatally as suspected isolated SOD. Prenatal MRI findings uniform to all cases included remnants of the septal leaflets of the cavum, fused forniceal columns, normal olfactory bulbs and tracts and a normal optic chiasm. Twelve fetuses were liveborn and five (27.8%) had postnatally confirmed SOD. No predictive prenatal or postnatal imaging findings reliably differentiated between infants with and without postnatally confirmed SOD. At a median follow-up of 2.5 (2.5,7) years, visual and endocrine impairment were present in 2 (40%) and 4 (80%) cases, respectively. Developmental delay was common (80%) and mostly severe. All seven neonates with an absent cavum septum pellucidum but non-confirmed SOD had normal development ...
Results: Of 214 fetuses presenting with absence of the cavum septum pellucidum, 18 (8.4%) were classified prenatally as suspected isolated SOD. Prenatal MRI findings uniform to all cases included remnants of the septal leaflets of the cavum, fused forniceal columns, normal olfactory bulbs and tracts and a normal optic chiasm. Twelve fetuses were liveborn and five (27.8%) had postnatally confirmed SOD. No predictive prenatal or postnatal imaging findings reliably differentiated between infants with and without postnatally confirmed SOD. At a median follow-up of 2.5 (2.5,7) years, visual and endocrine impairment were present in 2 (40%) and 4 (80%) cases, respectively. Developmental delay was common (80%) and mostly severe. All seven neonates with an absent cavum septum pellucidum but non-confirmed SOD had normal development ...
This course is theoretical and covers the integrated physiology of the cardiovascular system. Subjects include: EC coupling and cardiac output, pacemaking, ECG and arrhythmia, blood flow, blood pressure and vascular resistance, the endothelial cell, solute exchange, vascular smooth muscle, control of blood vessels and blood pressure regulation, circulation, cardiovascular receptors and responses, and pathological situations.. Learning Outcome. Knowledge:. - Electrical impulses in the heart. - Ion current and ECG. - Excitation contraction coupling. - Pumping of the heart. - Regulation of the heart beat. - Malfunction of the heart. - Cardiac output and peripheral pulse. - Flow, pressure and resistance. - Endothelial cells. - Microcirculation and solute exchange. - Vascular smooth muscle cells. - Control of blood vessels. - Cardiovascular receptors. - Co-ordinated cardiovascular responses. Skills:. - Demonstrate a general understanding of the function and regulation of the cardiovascular ...
Information about Minnesota State College physiology courses. There are accredited nursing certificate programs that can help launch your career, performing a variety of medical services within a hospital setting.
Physiologyplus has put together Renal Physiology MCQs Questions and Answers, from various Physiology exams and tests for health colleges and universities, online Physiology courses, and other medical training programs. Taking our Physiology practice MCQs will help you earn better grades in your Physiology courses. This will pave the way for your medical degree,nursing degree, or […]. ...
Pal Pacher M.D, Ph.D., F.A.P.S., F.A.H.A., F.A.C.C. Chief, Laboratory of Cardiovascular Physiology and Tissue Injury National Institute on Alcohol Abuse and Alcoholism National Institutes of Health 5625 Fishers Lane, MSC-9413, room 2N-17 Rockville, Maryland 20852, USA. Phone: (301) 443-4830 Cell: (301) 728-7841 Fax: (301) 480.0257 E-mail: [email protected]
Equal. Combining them we get a simple expression for the resting potential: (E E -m L , K + E (1 + N a . 4) K /gtd this is a simphhed torm ot the more complex Goldman constant field equation (which takes account of chloride and calcium currents too), but it suffices for our purpose here, which is to highlight the importance of the ratio of sodium permeability to potassium permeability in setting the membrane potential. The expression tells us that the resting potential is a potassium equilibrium potential ( - 9 4 m V ) modified by a fraction of the sodium equilibrium potential ( + 4 1 mV). 1910) Physiology the Servant of Medicine, Hodder & Stoughton) The Times newspaper of July 9, 1909 reported that Mr Ellis Griffith (MP for Anglesey) questioned the Secretary of State in Parliament over Wallers public experiment on a dog with a leather strap with sharp nails secured around the neck, his feet being immersed in glass jars containing salts . . connected by wires with galvanometers. Had the ...
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Should we change the old adage "you are what you eat" instead to "you are what your parents eat"? A new study by Adam Watkins and Kevin Sinclair investigates the correlation between a low protein paternal diet and the X and Y bearing sperm. While we have long understood the effects of maternal nutrition during pregnancy on offspring cardiovascular and metabolic health, does the same hold true for the paternal side of the equation during conception? Listen as Consulting Editor Steven P. Jones interviews lead author Adam Watkins (Aston University, United Kingdom) and expert Christopher Torrens (University of Southampton, United Kingdom) about this integrative cardiovascular physiology work that seeks to understand: Could what a male eats determine the gender of his offspring?. ...
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Isaac "Ike" Starr (March 6, 1895 - June 22, 1989), known as the father of ballistocardiography, was an American physician, ... Starr, Isaac; Abraham Noordergraaf (1967). Ballistocardiography in cardiovascular research: Physical aspects of the circulation ... Ballistocardiography". Biomed Eng J. 4: 201-216. doi:10.2174/1874120701004010201. PMC 3111731 . PMID 21673836. Alwan, Majd; ...
Ballistocardiography Benign paediatric heart murmur Heart sounds Precordial examination Lai, Lillian; Andrew N. Redington; ...
... and also in ballistocardiography and seismocardiography to study the mechanics of the heart. Infrasound is characterized by an ...
... a vaccine for tuberculosis Ballistocardiography, a vital sign caused by the mechanical movement of the heart which can be ...
... ballistocardiography MeSH E01.370.370.380.150 --- cardiac output MeSH E01.370.370.380.150.700 --- stroke volume MeSH E01.370. ...
The ballistocardiograph (BCG) is a measure of ballistic forces on the heart.[1] Ballistocardiography is a technique for ... "Ballistocardiography, a bibliography". NASA Technical Reports Server. NASA. hdl:2060/19650025919.. .mw-parser-output cite. ... Ballistocardiography at the US National Library of Medicine Medical Subject Headings (MeSH) ... "Theory and Developments in an Unobtrusive Cardiovascular System Representation: Ballistocardiography". The Open Biomedical ...
Once the catheter is in and all preparations are complete elsewhere in the lab, the EP study begins. The two large magnets are brought in on either side of the patient. They are large and looming and will sandwich the patient, but are able to precisely control the position of the electrodes that are on the end of the catheters. The X-ray machine will give the doctor a view of the heart and the position of the electrodes, and the magnets will allow the doctor to guide the electrodes through the heart. The magnets are controlled with either a joystick or game controller. The electrophysiologist begins by moving the electrodes along the conduction pathways and along the inner walls of the heart, measuring the electrical activity along the way. The next step is pacing the heart, this means he/she will speed up or slow down the heart by placing the electrode at certain points along the conductive pathways of the heart and control the depolarization rate of the heart. The doctor will pace each chamber ...
One of the first mentions of the possibility of heart transplantation was by American medical researcher Simon Flexner, who declared in a reading of his paper on "Tendencies in Pathology" in the University of Chicago in 1907 that it would be possible in the then-future for diseased human organs substitution for healthy ones by surgery - including arteries, stomach, kidneys and heart.[4] Not having a human donor heart available, James D. Hardy of the University of Mississippi Medical Center transplanted the heart of a chimpanzee into the chest of a dying Boyd Rush in the early morning of Jan. 24, 1964. Hardy used a defibrillator to shock the heart to restart beating. This heart did beat in Rush's chest for 60 to 90 minutes (sources differ), and then Rush died without regaining consciousness.[5][6][7] Although Hardy was a respected surgeon who had performed the world's first human-to-human lung transplant a year earlier,[8][9] author Donald McRae states that Hardy could feel the "icy disdain" from ...
In 1923 Dr. Elliott Cutler of the Peter Bent Brigham Hospital performed the world's first successful heart valve surgery - a mitral valve repair. The patient was a 12-year-old girl with rheumatic mitral stenosis.. The development of the heart-lung machine in the 1950s paved the way for replacement of the mitral valve with an artificial valve in the 1960s. For decades after, mitral valve replacement was the only surgical option for patients with a severely diseased mitral valve. However, there are some significant downsides to a prosthetic mitral valve. Infection of the valve can occur, which is dangerous and difficult to treat. Patients with mechanical heart valves are required to take blood thinners for the rest of their lives, which presents a risk of bleeding complications. The artificial mitral valve has an elevated risk of stroke. Patients with mechanical heart valves who use warfarin for anticoagulation have to be on long-term anticoagulation therapy. This means they must go to the clinic ...
The Mustard procedure was largely replaced in the late 1980s by the Jatene procedure (arterial switch), in which the native arteries were switched back to normal flow, so that the RV (right ventricle) would be connected to the pulmonary artery and the LV (left ventricle) would be connected to the aorta. This surgery had not been possible prior to 1975 because of difficulty with re-implanting coronary arteries which perfuse the actual heart muscle itself (myocardium), and even after it was first performed the excellent results from the Mustard operation meant that it was a long time before the Jatene procedure took over. ...
After completion of surgery, the patient is transferred to the post anesthesia care unit and closely monitored. When the patient is judged to have recovered from the anesthesia, he/she is either transferred to a surgical ward elsewhere in the hospital or discharged home. During the post-operative period, the patient's general function is assessed, the outcome of the procedure is assessed, and the surgical site is checked for signs of infection. There are several risk factors associated with postoperative complications, such as immune deficiency and obesity. Obesity has long been considered a risk factor for adverse post-surgical outcomes. It has been linked to many disorders such as obesity hypoventilation syndrome, atelectasis and pulmonary embolism, adverse cardiovascular effects, and wound healing complications.[11] If removable skin closures are used, they are removed after 7 to 10 days post-operatively, or after healing of the incision is well under way. It is not uncommon for surgical ...
The size of the recorder differs depending on the manufacturer of the device. The average dimensions of today's Holter monitors are about 110x70x30 mm but some are only 61x46x20 mm and weigh 99 g. [6] Most of the devices operate with two AA batteries. In case the batteries are depleted, some Holters allow their replacement even during monitoring. Most of the Holters monitor the ECG via only two or three channels (Note: depending on manufacturer, different counts of leads and lead systems are used). Today's trend is to minimize the number of leads to ensure the patient's comfort during recording. Although two/three channel recording has been used for a long time in the Holter monitoring history, as mentioned above, 12 channel Holters have recently appeared. These systems use the classic Mason-Likar lead system, i.e. producing a signal in the same format as during the common rest ECG and/or stress test measurement. These Holters can occasionally provide information similar to that of a ECG stress ...
Open heart surgery is a procedure in which the patient's heart is opened and surgery is performed on the internal structures of the heart. It was discovered by Wilfred G. Bigelow of the University of Toronto that the repair of intracardiac pathologies was better done with a bloodless and motionless environment, which means that the heart should be stopped and drained of blood. The first successful intracardiac correction of a congenital heart defect using hypothermia was performed by C. Walton Lillehei and F. John Lewis at the University of Minnesota on September 2, 1952. The following year, Soviet surgeon Aleksandr Aleksandrovich Vishnevskiy conducted the first cardiac surgery under local anesthesia.. Surgeons realized the limitations of hypothermia - complex intracardiac repairs take more time and the patient needs blood flow to the body, particularly to the brain. The patient needs the function of the heart and lungs provided by an artificial method, hence the term cardiopulmonary bypass. ...
Radiofrequency energy is used in heart tissue or normal parts to destroy abnormal electrical pathways that are contributing to a cardiac arrhythmia. It is used in recurrent atrial flutter (Afl), atrial fibrillation (AF), supraventricular tachycardia (SVT), atrial tachycardia, Multifocal Atrial Tachycardia (MAT) and some types of ventricular arrhythmia. The energy-emitting probe (electrode) is at the tip of a catheter which is placed into the heart, usually through a vein. This catheter is called the ablator. The practitioner first "maps" an area of the heart to locate the abnormal electrical activity (electrophysiology study) before the responsible tissue is eliminated. Ablation is now the standard treatment for SVT and typical atrial flutter and the technique can also be used in AF, either to block the atrioventricular node after implantation of a pacemaker or to block conduction within the left atrium, especially around the pulmonary veins. In some conditions, especially forms of intra-nodal ...
The majority of atrial septostomies are performed on infants with d-TGA or other cyanotic heart defects. In these cases, a balloon catheter is guided through a large vein into the right atrium, during cardiac catheterization. The catheter is threaded into the foramen ovale, a naturally existing hole between the atria that normally closes shortly after birth. The balloon at the end of the catheter is inflated so as to enlarge the foramen ovale enough that it will no longer become sealed. This allows more oxygenated blood to enter the right heart (especially in the case of d-TGA) where it can be pumped to the rest of the body. The balloon is deflated and the catheter is removed. Sometimes the initial surgery is not entirely successful, or there are other factors that make a simple balloon atrial septostomy impossible, such as an older patient whose foramen ovale has already closed. This is when a blade atrial septostomy is performed. The details of the procedure are largely the same, except that a ...
In the 19th century, Doctor H. R. Silvester described a method (The Silvester Method) of artificial ventilation in which the patient is laid on their back, and their arms are raised above their head to aid inhalation and then pressed against their chest to aid exhalation.[153] The procedure is repeated sixteen times per minute. This type of artificial ventilation is occasionally seen in films made in the early 20th century. A second technique, called the Holger Nielsen technique, described in the first edition of the Boy Scout Handbook in the United States in 1911, was a form of artificial ventilation where the person was laid face down, with their head to the side, resting on the palms of both hands. Upward pressure applied at the patient's elbows raised the upper body while pressure on their back forced air into the lungs, in essence the Silvester Method with the patient flipped over. This form is seen well into the 1950s (it is used in an episode of Lassie during the mid-1950s), and was often ...
The etymology of the word is derived from the Greek electro, because it is related to electrical activity, kardia, Greek for heart, and graph, a Greek root meaning "to write". Alexander Muirhead is reported to have attached wires to a feverish patient's wrist to obtain a record of the patient's heartbeat in 1872 at St Bartholomew's Hospital.[41] Another early pioneer was Augustus Waller, of St Mary's Hospital in London.[42] His electrocardiograph machine consisted of a Lippmann capillary electrometer fixed to a projector. The trace from the heartbeat was projected onto a photographic plate that was itself fixed to a toy train. This allowed a heartbeat to be recorded in real time. An initial breakthrough came when Willem Einthoven, working in Leiden, the Netherlands, used the string galvanometer (the first practical electrocardiograph) he invented in 1901.[43] This device was much more sensitive than both the capillary electrometer Waller used and the string galvanometer that had been invented ...
Partial Anomalous Pulmonary Venous Drainage by CMR. CMR examinations in children typically last 15 to 60 minutes. In order to avoid blurry images the child must remain very still during the examination. Different institutions have different protocols for pediatric CMR, but most children 7 years of age and older can cooperate sufficiently for a good quality examination. Providing an age-appropriate explanation of the procedure to the child in advance will increase the likelihood of a successful study. After proper safety screening, parents can be allowed into the MRI scanner room to help their child complete the examination. Some centers allow children to listen to music or watch movies through a specialized MRI-compatible audiovisual system to reduce anxiety and improve cooperation. However, the presence of a calm, encouraging, supportive parent generally produces better results in terms of pediatric cooperation than any distraction or entertainment strategy short of sedation. If the child ...
The original procedure was named for Alfred Blalock, surgeon, Baltimore (1899-1964), Helen B. Taussig, cardiologist, Baltimore/Boston (1898-1986) and Vivien Thomas (1910-1985) who was at that time Blalock's laboratory technician. They all helped to develop the procedure. Taussig, who treated hundreds of infants and children with this disorder, had observed that children with a cyanotic heart defect and a patent ductus arteriosus (PDA) lived longer than those without the PDA. It therefore seemed to her that a shunt which mimicked the function of a PDA might relieve the tetralogy patients' poor oxygenation. In 1943, having broached the possibility of a surgical solution to Robert Gross of Boston without success, Taussig approached Blalock and Thomas in their Hopkins laboratory in 1943. According to the account of the original consultation between the three provided in Vivien Thomas' 1985 autobiography Partners of the Heart, Taussig carefully described the anomaly of Tetralogy of Fallot, but made ...
The use of cold for pain relief and as an anti-inflammatory has been known since the time of Hippocrates (460-377 B.C).[11] Since then there have been numerous accounts of ice used for pain relief including from the Ancient Egyptians and Avicenna of Persia (AD 982-1070).[12] Since 1899, Dr. Campbell White used refrigerants for treating a variety of conditions, including: lupus erythematosus, herpes zoster, chancroid, naevi, warts, varicose leg ulcers, carbuncles, carcinomas and epitheliomas. De Quervain successfully used of carbonic snow to treat bladder papillomas and bladder cancers in 1917. Dr Irving S Cooper, in 1913, progressed the field of cryotherapy by designing a liquid nitrogen probe capable of achieving temperatures of -196 °C, and utilizing it to treat of Parkinson's disease and previously inoperable cancer. Cooper's cryoprobe advanced the practice of cryotherapy, which led to growing interest and practice of cryotherapy. In 1964, Dr. Cahan successfully used his liquid nitrogen ...
Various antiarrhythmic agents can be used to return the heart to normal sinus rhythm. Pharmacological cardioversion is an especially good option in patients with fibrillation of recent onset. Drugs that are effective at maintaining normal rhythm after electric cardioversion can also be used for pharmacological cardioversion. Drugs like amiodarone, diltiazem, verapamil and metoprolol are frequently given before cardioversion to decrease the heart rate, stabilize the patient and increase the chance that cardioversion is successful. There are various classes of agents that are most effective for pharmacological cardioversion. Class I agents are sodium (Na) channel blockers (which slow conduction by blocking the Na+ channel) and are divided into 3 subclasses a, b and c. Class Ia slows phase 0 depolarization in the ventricles and increases the absolute refractory period. Procainamide, quinidine and disopyramide are Class Ia agents. Class 1b drugs lengthen phase 3 repolarization. They include ...
The Rastelli procedure is an open heart surgical procedure developed by Italian physician and cardiac surgery researcher, Giancarlo Rastelli in 1967 at the Mayo Clinic and involves using a pulmonary or aortic homograft conduit to relieve pulmonary obstruction in double outlet right ventricle with pulmonary stenosis. It is used to correct certain combinations of congenital heart defects (CHDs): ...
TECAB surgery uses the da Vinci tele-robotic Stereoscopic 3-D Imaging system. The system consists of a robotic "slave" system at the bedside. The robot relays its information to an external surgical control unit, where a cardiac surgeon has a three-dimensional view of the chest cavity, and twin controllers for the robotic arms. The procedure frequently involves grafting of the internal mammary artery to the diseased coronary artery, and therefore does not require external harvesting of blood vessels.[2] ...
അഥവാ ഉള്ളടക്കം മറയ്ക്കാൻ നിർദേശിക്കുന്ന മറ്റേതെങ്കിലും പട്ടികകൾ ഉൾപ്പെടുത്തിയിട്ടുണ്ടെങ്കിൽ ഉള്ളടക്കം ...
The ballistocardiograph (BCG) is a measure of ballistic forces on the heart.[1] Ballistocardiography is a technique for ... "Ballistocardiography, a bibliography". NASA Technical Reports Server. NASA. hdl:2060/19650025919.. .mw-parser-output cite. ... Ballistocardiography at the US National Library of Medicine Medical Subject Headings (MeSH) ... "Theory and Developments in an Unobtrusive Cardiovascular System Representation: Ballistocardiography". The Open Biomedical ...
This small volume is the first to appear on the subject of ballistocardiography. The sections on the history of the ... Clinical Ballistocardiography.. Ann Intern Med. 1952;37:625-626. doi: 10.7326/0003-4819-37-3-625_2 ...
B. M. Wright; A New Look at Ballistocardiography. Clin Sci Mol Med 1 September 1973; 45 (3): 21P. doi: https://doi.org/10.1042/ ...
A practical method of ballistocardiography, easily adaptable to routine office use, is described. The instrument utilized is a ...
CitationGomez, J. [et al.]. Uncertainty factors in time-interval measurements in ballistocardiography. A: IMEKO World Congress ...
Recently, researchers have improved a technique called ballistocardiography, or BCG, that uses one or more mechanical sensors, ... "Sternal vibrations reflect hemodynamic changes during immersion: underwater ballistocardiography". Andrew Wiens- [email protected] ... 3aBA12 - Sternal vibrations reflect hemodynamic changes during immersion: underwater ballistocardiography - Andrew Wiens, ... underwater ballistocardiography.". Presented Wednesday, May 19, 2015, 11:30 am, Kings 2. 169th ASA Meeting, Pittsburgh. ...
ballistocardiograph - ballistocardiography /beuh lis toh kahr dee og reuh fee/, n. /beuh lis toh kahr dee euh graf , grahf /, n ... Ballistocardiography - The ballistocardiograph (BCG) is a vital sign in the 1 20 Hz frequency range which is caused by the ... ballistocardiography - See ballistocardiograph. * * * graphic recording of the stroke volume of the heart for the purpose of ... ballistocardiography - n. recording of the heart s activity using a ballistocardiograph … English contemporary dictionary ...
There exist two principles of ballistocardiography: dynamic and seismic. In the event of dynamic ballistocardiography body ... In the article main principles of ballistocardiography are considered. Special attention is paid to registration of the spatial ... Ballistocardiography Baroreceptors Beta blockers Bicuspid aortic valve Biochemical processes Biophysics Blood circulation Blood ...
Ballistocardiography Sensors offer continuous monitoring.. *. Communication Systems & Equipment. Heat Stress Monitor can be ...
BALLISTOCARDIOGRAPHY Br Med J 1954; 1 :319 (Published 06 February 1954) *PDF ...
ballistocardiography* In ballistocardiography. The heartbeat results in motion of the body, which in turn causes movements in a ...
Ballistocardiography refers to the recording of movements of the body caused by cardiac contractions and associated blood flow ... Ballistocardiography -- a method worth revisiting. Conf Proc IEEE Eng Med Biol Soc. 2011;2011:4279-4782. ... McKay WP, Gregson PH, McKay BW, Militzer J. Sternal acceleration ballistocardiography and arterial pressure wave analysis to ... Recent advances in cardiovascular monitoring using ballistocardiography. Conf Proc IEEE Eng Med Biol Soc. 2012;2012:5038-5041. ...
Ballistocardiography (BCG) allows cardiac activity to be monitored unobtrusively. A ballistocardiograph records the vibrations ...
Ballistocardiography, Rochet, Brussels, pp. 225-233, 1962.. [5] Elsbach H., Rodrico F.A., Westerhof N., The ultralow frequency ... 7] Goedhard W.J. Ballistocardiography: past, present and future. Bibl. Cardiol. Vol. 37, pp. 27-45, 1979.. ______. Alpo Värri ... First Congress Ballistocardiography and Cardiovascular Dynamics, Amsterdam, Karger; New York, USA, pp. 7-20, 1966.. [3] Jackson ... 1] Smith N.T., Ballistocardiography in Weissler A.M. (Ed.), Noninvasive cardiology. Grune & Stratto, New York, USA, 1974.. [2] ...
Ballistocardiography - a method worth revisiting. Conf Proc IEEE Eng Med Biol Soc (2011) 2011:4279-82. doi:10.1109/IEMBS. ...
Recently, researchers have improved a technique called ballistocardiography, or BCG, that uses one or more mechanical sensors, ... 7. Sternal vibrations reflect hemodynamic changes during immersion: underwater ballistocardiography "In 2014, one out of every ... 3aba12-sternal-vibrations-reflect-hemodynamic-changes-during-immersion-underwater-ballistocardiography-andrew-wiens-andrew- ... 7. Sternal vibrations reflect hemodynamic changes during immersion: underwater ballistocardiography 8. Fabricating Blood ...
Seismocardiography; Ballistocardiography; Superiorinferior; Accelerometer. Abbreviations. BCG: Ballistocardiography; ECHO: ... A large number of people suffer from heart diseases or circulatory problems [1,2]. Ballistocardiography (BCG) has been shown to ... De Ridder S, Migeotte PF, Neyt X, Pattyn N, Prisk GK (2011) Three-dimensional ballistocardiography in microgravity: a review of ... Giovangrandi L, Inan OT, Wiard RM, Etemadi M, Kovacs GT (2011) Ballistocardiography-a method worth revisiting. Conf Proc IEEE ...
14:30 Non-Invasive In-Home Sleep Stage Classification Using A Ballistocardiography Bed Sensor. Ruhan Yi and Moein Enayati ( ... 12:40 Blood Pressure Tracking with Wearable Wrist Ballistocardiography. Peyman Yousefian and Sungtae Shin (University of ...
The experiment is called Three-Dimensional Ballistocardiography in Weightlessness.. Four experiments- two from the United ...
Beddit is a Finnish company that is applying the not-widely-known technology of ballistocardiography to track a persons ... We use the method called ballistocardiography (BCG). This means measuring and analyzing the forces originating from body ... doing my postgraduate studies at the Helsinki University of Technology and my research subject was ballistocardiography (BCG). ...
Cardiac Output Measurement using Ballistocardiography - 2013. *Wireless ElectroCardiogram Monitoring for Cardiac patient on ...
Isaac "Ike" Starr (March 6, 1895 - June 22, 1989), known as the father of ballistocardiography, was an American physician, ... Starr, Isaac; Abraham Noordergraaf (1967). Ballistocardiography in cardiovascular research: Physical aspects of the circulation ... Ballistocardiography". Biomed Eng J. 4: 201-216. doi:10.2174/1874120701004010201. PMC 3111731 . PMID 21673836. Alwan, Majd; ...
Ballistocardiography Benign paediatric heart murmur Heart sounds Precordial examination Lai, Lillian; Andrew N. Redington; ...
A61B5/1102-Ballistocardiography * * A-HUMAN NECESSITIES * A61-MEDICAL OR VETERINARY SCIENCE; HYGIENE ...
A61B5/1102-Ballistocardiography * * A-HUMAN NECESSITIES * A61-MEDICAL OR VETERINARY SCIENCE; HYGIENE ...
  • Ballistocardiography is a technique for producing a graphical representation of repetitive motions of the human body arising from the sudden ejection of blood into the great vessels with each heart beat. (wikipedia.org)
  • Ballistocardiography (BCG) allows cardiac activity to be monitored unobtrusively. (slideshare.net)
  • Ballistocardiography (BCG) has been shown to be valuable in detecting relative changes of the cardiovascular function [ 3 , 4 ] and could be a cost-effective solution to the need of assessing the cardiac and circulatory function [ 5 ]. (omicsonline.org)
  • Vogt, E., MacQuarrie, D., Neary, J.P.: Using ballistocardiography to measure cardiac performance: a brief review of its history and future significance. (springer.com)
  • The strength and drawbacks of different solutions for cardiac and respiratory assessment will be discussed, special attention will be granted to the ballistocardiography and radar ballistocardiography implementations but also to other sensing solutions cardiac assessment. (concordia.ca)
  • Noninvasive recording of movements caused by the heartbeat and the blood circulation is known as ballistocardiography.Several studies have shown the capability of a force plate to detect cardiac activity in the human body.The results are compared with the data obtained invasively during a cardiac catheterization. (nih.gov)
  • Smith N.T., Ballistocardiography in Weissler A.M. (Ed.), Noninvasive cardiology. (tut.fi)
  • The first BCG recording was published in 1877 but the modern ballistocardiography in considered to have begun in 1936 by Isaac Starr when he built a new type of bed BCG measurement device. (tut.fi)
  • Ballistocardiography is a technique for producing a graphical representation of repetitive motions of the human body arising from the sudden ejection of blood into the great vessels with each heart beat. (wikipedia.org)
  • These results using ballistocardiography are in agreement with the above stated results from the heart rate variability and blood pressure research. (canadianchiropractor.ca)
  • Malik, A., L. Pilon, and J. Boger , ' Development of a Smart Seat Cushion for Heart Rate Monitoring Using Ballistocardiography ' , EEE International Conference on Embedded and Ubiquitous Computing (IEEE EUC 2019) , New York, NY, 08/2019. (uwaterloo.ca)
  • I was a research scientist doing my postgraduate studies at the Helsinki University of Technology and my research subject was ballistocardiography (BCG). (medgadget.com)