| cannon sound | The loud first heart sound heard intermittently in complete atrioventricular block and in interference-dissociation when the ventricles happen to contract shortly after the atria. Synonym: cannon sound. (05 Mar 2000) |
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| cardiac sound | The sounds heard over the cardiac region produced by the functioning of the heart. There are four distinct sounds: the first occurs at the beginning of systole and is heard as a "lubb" sound; the second is produced by the closing of the aortic and pulmonary valves and is heard as a "dupp" sound; the third is produced by vibrations of the ventricular walls when suddenly distended by the rush of blood from the atria; and the fourth is produced by atrial contraction and ventricular filling but is rarely audible in the normal heart. The physiological concept of heart sounds is differentiated from the pathological heart murmurs. (12 Dec 1998) |
| gallop sound | The abnormal third or fourth heart sound which, when added to the first and second sound's, produces the triple cadence of gallop rhythm. See: gallop. (05 Mar 2000) |
| van Buren sound | A standard sound, available in several calibers, with a gently curved tip designed to follow the contour of the deep bulbous urethra in the male; used for urethral calibration or dilation. (05 Mar 2000) |
| McCrea sound | A gently curved sound used to dilate the urethra in infants or children. (05 Mar 2000) |
| cavernous voice sound | The hollow or metallic voice sound heard over a pulmonary cavity. (05 Mar 2000) |
| respiratory sound | A murmur, bruit, fremitus, rhonchus, or rale heard on auscultation over the lungs or any part of the respiratory tract. (05 Mar 2000) |
| percussion sound | Any sound elicited on percussing over one of the cavities of the body. (05 Mar 2000) |
| pericardial friction sound | A to-and-fro grating, rasping, or, rarely, creaking sound heard over the heart in some cases of pericarditis, due to rubbing of the inflamed pericardial surfaces as the heart contracts and relaxes; during normal sinus rhythm it is usually triphasic; during any rhythm it may be biphasic or uniphasic. Synonym: pericardial rub, pericardial friction rub. (05 Mar 2000) |
| Mercier's sound | A catheter the beak of which is short and bent almost at a right angle. (05 Mar 2000) |
| coconut sound | A sound like that produced when a cracked coconut is tapped; it is elicited by percussing the skull of a patient with osteitis deformans. (05 Mar 2000) |
| waterwheel sound | Sound made by cardiac motion inducing splashes in the presence of fluid and air within the pericardial sac. (05 Mar 2000) |
| water-whistle sound | A bubbling whistle heard on auscultation over a bronchial or pulmonary fistula. (05 Mar 2000) |
| pistol-shot femoral sound | A shotlike systolic sound heard over the femoral artery in high output states, especially aortic insufficiency; presumably due to sudden stretching of the elastic wall of the artery; pistol-shot sounds may also be heard over other relatively large arteries, e.g., brachial, radial. (05 Mar 2000) |
| pistol-shot sound | Sound created by lightly compressing an artery during aortic regurgitation; sometimes is audible without compression. (05 Mar 2000) |