| TWA | T wave alternans |
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| auscultatory alternans | Alternation in the intensity of heart sounds or murmurs in the presence of a regular cardiac rhythm as a result of alternation of the heart. Synonym: auditory alternans. (05 Mar 2000) |
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| auscultatory | Relating to auscultation. (05 Mar 2000) |
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| auscultatory gap | The period during which Korotkoff sounds indicating true systolic pressure fade away and reappear at a lower pressure point; responsible for errors made in recording falsely low systolic blood pressure, especially in hypertensive patients, of up to 25 mm Hg, and avoided by pumping the cuff 30 mm Hg beyond palpable systolic pressure. Synonym: silent gap. (05 Mar 2000) |
| auscultatory percussion | Auscultation of the chest or other part at the same time that percussion is made, to aid in hearing the sound made by percussion. (05 Mar 2000) |
| auscultatory sound | A rale, murmur, bruit, fremitus, or other sound heard on auscultation of the chest or abdomen. (05 Mar 2000) |
| alternans | Alternating; KP7>often used substantively for alternation of the heart, either electrical or mechanical. Alternating; used as a noun in the sense of pulsus alternans. Origin: L. (05 Mar 2000) |
| auditory alternans | Alternation in the intensity of heart sounds or murmurs in the presence of a regular cardiac rhythm as a result of alternation of the heart. Synonym: auditory alternans. (05 Mar 2000) |
| concordant alternans | Simultaneous occurrence of right ventricular and pulmonary artery alternans with left ventricular and peripheral pulsus alternans. (05 Mar 2000) |
| pulsus alternans | Mechanical alternation, a pulse regular in time but with alternate beats stronger and weaker, often detectable only with the sphygmomanometer and usually indicating serious myocardial disease. Synonym: pulsus alternans. (05 Mar 2000) |
| systole alternans | <physiology> Contraction of only one ventricle of the heart. Hemisystole is noticed in rare cases of insufficiency of the mitral valve, in which both ventricles at times contract simultaneously, as in a normal heart, this condition alternating with contraction of the right ventricle alone; hence, intermittent hemisystole. Source: Websters Dictionary (01 Mar 1998) |
| discordant alternans | Presence of right ventricular and pulmonary artery alternans with peripheral pulsus alternans, but with the strong beat of the right ventricle coinciding with the weak beat of the left and vice versa. (05 Mar 2000) |
| electrical alternans | Electrical alternation of the heart. (05 Mar 2000) |
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