| atrial septal defect | <cardiology> An inherited condition where there is nonclosure of the foramen ovale at birth, resulting in congenital heart disease. Usually asymptomatic until the third or fourth decades of life. Symptoms include exertional shortness of breath, fatigue and palpitations. Acronym: ASD (12 Jan 1998) |
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| atrial septum | The wall between the two upper chambers (the right and left atrium) of the heart. (12 Dec 1998) |
| atrial sound | The sound produced in late diastole in association with ventricular filling due to atrial systole and related to reduced ventricular compliance. It is a low frequency oscillation that may be normal at older ages owing to a physiologic decline in ventricular compliance but is nearly always abnormal at younger ages if it is of high intensity or palpable. It is common in ventricular hypertrophy, particularly with hypertension, and is almost invariable during acute myocardial infarction. Fourth heart sounds may arise from the right or left ventricle or both. Synonym: atrial sound. (05 Mar 2000) |
| atrial synchronous pulse generator | A ventricular stimulating pulse whose rate of discharge is directly determined by the atrial rate. Synonym: atrial triggered pulse generator. (05 Mar 2000) |
| atrial systole | Contraction of the atria. Synonym: auricular systole. (05 Mar 2000) |
| atrial tachycardia | Paroxysmal tachycardia originating in an ectopic focus in the atrium. Synonym: auricular tachycardia. (05 Mar 2000) |
| atrial transport function | The role of the atria in filling and stretching the ventricles by their presystolic contraction, without which the force of ventricular contraction and hence the cardiac output may significantly decrease. (05 Mar 2000) |
| atrial triggered pulse generator | A ventricular stimulating pulse whose rate of discharge is directly determined by the atrial rate. Synonym: atrial triggered pulse generator. (05 Mar 2000) |
| atrial ventricular canal defect | A defect caused by deficient or absent septal tissue immediately above and below the normal level of the atrioventricular valves, including the region normally occupied by the A-V septum in hearts with two ventricles. The A-V valves are abnormal to a varying degree. (05 Mar 2000) |
| atrial-well technique | An obsolete semi-closed surgical technique for repairing atrial septal defects and other cardiac abnormalities. (05 Mar 2000) |
| atrichia | Absence of hair, congenital or acquired. Synonym: atrichosis. Origin: G. A-priv. + thrix (trich-), hair (05 Mar 2000) |
| atrichosis | Absence of hair, congenital or acquired. Synonym: atrichosis. Origin: G. A-priv. + thrix (trich-), hair (05 Mar 2000) |
| atrichous | Without hair. (05 Mar 2000) |
| atrio- | The atrium; atrial. Origin: L. Atrium, an entrance hall (05 Mar 2000) |
| atrioactivase | <enzyme> Selectively cleaves the arg(98)-ser(99) peptide bond in pro-atrial natriuretic factor during or just after the process of secretion from the heart atrium Registry number: EC 3.4.21.- (26 Jun 1999) |
| atrial artery |
the branch of the coronary artery that supplies the muscles of the atria
출처: wordnet.princeton.edu/perl/webwn
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| atrial auricle |
auricle: a small conical pouch projecting from the upper anterior part of each atrium of the heart
출처: wordnet.princeton.edu/perl/webwn
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| atrioventricular node |
a node of specialized heart muscle located in the septal wall of the right atrium; receives impulses from the sinoatrial node and transmits them to atrioventricular bundle
출처: wordnet.princeton.edu/perl/webwn
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| atriomegaly |
(atrio
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| atrioseptoplasty |
(atrio
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| atri | the upper chamber of each half of the heart |
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| atri | the left upper chamber of the heart that receives blood from the pulmonary veins |