artificial heart

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Related to Artifical heart: AbioCor Implantable Replacement Heart

ar·ti·fi·cial heart

a mechanical pump used to replace the function of a damaged heart, either temporarily or as a permanent prosthesis.

artificial heart

a mechanical device of molded polyurethane, consisting of two ventricles implanted in the body and powered by an air compressor located outside the body, used to keep the patient alive until transplantation is possible. See also Jarvik-7.
The most recent device is the AbioCor® Total Replacement Heart, developed by Abiomed, intended as a permanent heart replacement for end-stage heart failure patients who are not candidates for transplant and cannot be helped by any other available treatment

artificial heart

Cardiovascular surgery A biomechanical device intended to replace the heart's hemodynamic function. See Jarvik-7, Penn State heart, Ventricular assist device.

ar·ti·fi·cial heart

(ahr'ti-fish'ăl hahrt)
A mechanical pump used to replace the function of a damaged heart, either temporarily or as a permanent prosthesis.

artificial heart

A mechanical pumping device intended to maintain the blood circulation of a person whose heart is no longer able to do so. Heart-lung machines can maintain an effective circulation for many hours while a heart operation is performed, but to date, no artificial heart has been shown capable of doing this indefinitely. The main complications including infection, bleeding at connections and blood clotting (thrombosis) with the production of many dangerous emboli. Artificial hearts have, however, been successful in keeping patients alive until a heart transplant can be done. Implantable artificial hearts have functioned for up to about eight months in patients awaiting cardiac transplantation.

ar·ti·fi·cial heart

(ahr'ti-fish'ăl hahrt)
A mechanical pump used to replace the function of a damaged heart, either temporarily or as a permanent prosthesis.

heart

the hollow muscular organ lying on the sternum that serves as a pump controlling the blood flow in two circuits, the pulmonary and the systemic. See also circulatory system.

artificial heart
a mechanical device that replaces the heart by using pulsating air to pump blood to the body. Successfully placed in calves, sheep and dogs as experimental models for the subsequent use of such methods in humans.
heart attack
see myocardial infarction.
heart bones
ossicles in the fibrous skeletal ring which surrounds the aortic orifice of the heart in cattle and occasionally in other species; called also ossa cordis.
heart conducting system
consists of the sinoatrial node, the atrioventricular node, the atrioventricular bundle and its two crura.
cyanotic heart malformations
insufficient oxygenated hemoglobin is received in the peripheral capillary beds resulting in blue discoloration of tissues, and an incapacity of the body to maintain a life-sustaining level of activity.
heart disease
an all-embracing term including those diseases in which there is intrinsic disease of the heart such as uremia, valvular disease, African horse sickness, vitamin E-selenium nutritional deficiency, inherited cardiomyopathies of dogs and cattle, altitude sickness, canine parvovirus infection, and in a number of plant and other poisonings. See also mulberry heart disease.
heart failure cells
hemosiderin-laden macrophages present in the pulmonary alveoli in cases of congestive heart failure.
heart malformations
includes ectopia cordis, patent foramen ovale, ventricular septal defects such as Fallot's tetralogy, Eisenmenger complex, patent ductus arteriosus, aortic coarctation, right aortic arch persistence, truncus arteriosus persistence, fibroelastosis, subvalvular aortic stenosis, anomalous origin of carotid arteries, transposition of great vessels, pulmonic stenosis, aortic stenosis.
heart massage
see cardiac massage.
heart meridian points
acupuncture points along the heart meridian.
heart rate
the number of contractions of the cardiac ventricles per unit of time. For normal rates see pulse rate.
heart score
a concept which sets out that performance in racing horses is related to heart size, now a well-established relationship, and that heart size can be estimated in the living horse by the measurement of the QRS interval.
heart sounds
see heart sounds, heart murmur.
heart strain
is an unpopular concept in any medical science but overtrained horses which perform poorly do have a high incidence of abnormal T waves.
heart valve anomalies
failure of complete development of atrioventricular or semilunar valves results in stenosis or incompetence of the valves and often congestive heart failure.
heart valve hematoma
congenital, usually multiple lesions on the edges of atrioventricular valves, mostly in calves; disappear spontaneously in most cases.
heart valve thrombosis
common lesion on the free edges of valves, often the source of widespread emboli; on healing leave scarred, insufficient valves.
heart valves
flaps of endothelial connective tissue that guard the entrance into and exit from the ventricles and bring about unidirectional blood flow. Include the atrioventricular and semilunar valves, the proper closure of which is essential to maintain circulatory equilibrium, can be diseased and cause heart failure. See also heart murmur, endocarditis, endocardiosis.