| heart beat | A complete cardiac cycle, including spread of the electrical impulse and the consequent mechanical contraction. Synonym: ictus cordis. (05 Mar 2000) |
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| heart biopsy | <investigation, procedure, surgery> A procedure which involves the removal of a small specimen of cardiac muscle tissue for microscopic analysis. This is generally performed at the same time as a cardiac catheterisation or as a very similar, yet separate, procedure. A small piece of heart tissue is taken via a small forceps inserted into the cardiac catheter site (usually threaded through a vein in the neck). This test may reveal the cause of a cardiomyopathy, myocarditis, amyloidosis or a heart transplant rejection. (21 Mar 1998) |
| heart block | <cardiology, physiology> A conduction disturbance that results in the inappropriate delay (or complete inability) of a electrical impulse, generated in the atria, to reach the ventricles (via the atrioventricular node). Clinical types are divided into first (nonserious), second and third degree (most serious) AV blocks. Some drugs may precipitate an AV block (for example clonidine, methyldopa, verapamil). A permanent pacemaker may be required for a third degree (complete) heart block. (07 Apr 1998) |
| heart bypass, left | Diversion of the flow of blood from the pulmonary veins directly to the aorta, avoiding the left atrium and the left ventricle. This is a temporary procedure usually performed to assist other surgical procedures. (12 Dec 1998) |
| heart bypass, right | Diversion of the flow of blood from the entrance to the right atrium directly to the pulmonary arteries, avoiding the right atrium and right ventricle. This a permanent procedure often performed to bypass a congenitally deformed right atrium or right ventricle. (12 Dec 1998) |
| heart catheterization | Procedure which includes placement of catheter, recording of intracardiac and intravascular pressure, obtaining blood samples for chemical analysis, and cardiac output measurement, etc. Specific angiographic injection techniques are also involved. (12 Dec 1998) |
| heart conduction system | An impulse-conducting system composed of modified cardiac muscle and having the power of spontaneous rhythmicity and conduction more highly developed than the rest of the heart. (12 Dec 1998) |
| heart defects, congenital | Imperfections or malformations of the heart, existing at birth. (12 Dec 1998) |
| heart failure | A condition where there is ineffective pumping of the heart leading to an accumulation of fluid in the lungs. Typical symptoms include shortness of breath with exertion, difficulty breathing when lying flat and leg or ankle swelling. Causes include chronic hypertension, cardiomyopathy and myocardial infarction. (27 Sep 1997) |
| heart failure cells | Macrophages in the lung during left heart failure that often carry large amounts of haemosiderin. See: siderophore. (05 Mar 2000) |
| heart failure in kids | <radiology> Primary cardiomyopathy, aortic outflow obstruction, coarctation, supravalvular aortic stenosis, valvular aortic stenosis, noncardiac lesion, asphyxia, TTN (transient tachypnea of newborn), perinatal brain damage (IVH) see also: neonatal congestive heart failure (12 Dec 1998) |
| heart hormone | A substance present in extracts of cardiac tissue that augments cardiac contraction; possibly adenosine, a catecholamine, or some non-specific stimulant present generally in tissues. Synonym: cardiac hormone, heart hormone. (05 Mar 2000) |
| heart injuries | General or unspecified injuries to the heart. (12 Dec 1998) |
| heart massage | Rhythmic compression of the heart by pressure applied manually over the sternum (closed heart massage) or directly to the heart through an opening in the chest wall (open heart massage). It is done to reinstate and maintain circulation. (12 Dec 1998) |
| heart murmur | A finding on physical examination of the heart that can, in some cases, indicate the presence of cardiac disease. Murmurs result from vibrations set up in the bloodstream and the surrounding heart and great vessels as the result of turbulent flow. (27 Sep 1997) |
Synonyms : Promotional Items, Campaign, Health, Campaigns, Health, Health Campaign, Health Promotions, Item, Promotional, Items, Promotional, Program, Wellness, Programs, Wellness, Promotion, Health, Promotional Item, Promotions, Health, Wellness Program
Synonyms : Health Resort, Resort, Resort, Health, Resorts, Health
Synonyms : Resources, Health Resource, Resource, Resource, Health, Resources, Health
Synonyms : Services, Health, Health Service, Service, Health
Synonyms : Accessibility, Health Services, Contraceptive Availability, Distance, Locale, Program Accessibility, Accessibility, Program, Availability, Contraceptive, Distances, Health Services Availability, Locales
| hearing |
(law) a proceeding (usually by a court) where evidence is taken for the purpose of determining an issue of fact and reaching a decision based on that evidence an opportunity to state your case and be heard; "they condemned him without a hearing"; "he saw that he had lost his audience" earshot: the range within which a voice can be heard; "the children were told to stay within earshot" listening: the act of hearing attentively; "you can learn a lot by just listening"; "they make good music--you should give them a hearing" a session (of a committee or grand jury) in which witnesses are called and testimony is taken; "the investigative committee will hold hearings in Chicago" the ability to hear; the auditory faculty; "his hearing was impaired" hearing(a): able to perceive sound
출처: wordnet.princeton.edu/perl/webwn
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| head cavity |
modified somites that in lower vertebrates give rise to the extrinsic eye muscles.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| head cap |
the double-layered caplike structure over the upper two-thirds of the acrosome of a spermatozoon, consisting of the collapsed acrosomal vesicle.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| heat capacity |
the amount of heat required to raise the temperature of a specific quantity of a substance by one degree Celsius. Symbol C (C p at constant pressure, C v at constant volume).
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| heat rigor |
rigidity of muscles induced by heat.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| HEA | a wrestling hold in which the opponent's head is locked between the crook of your elbow and the side of your body |
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| HEA | with the head foremost |
| HEA | excessively quick |
| HEA | with the head foremost |
| HEA | in a hasty and foolhardy manner |
| HEA | at breakneck speed |
| HEA | the head of a tribe or clan |
| HEA | an executioner who beheads the condemned person |
| HEA | presiding officer of a school |
| HEA | the position of headmaster |
| HEA | a woman headmaster |
| HEA | the position of headmistress |