| click | A slight sharp sound. Ejection click, a clicking ejection sound. See: sound. Mitral click, the opening snap of the mitral valve. Systolic click, a sharp, clicking sound heard during cardiac systole; when heard in early systole it is usually an ejection sound; in late systole the click usually signifies mitral insufficiency, as in the dysfunction of the mitral valvular apparatus when it prolapses into the left atrium during systole (see Barlow syndrome); rarely may also be due to pleuropericardial adhesions or other extracardiac mechanisms. (05 Mar 2000) |
|---|---|
| click syndrome | <syndrome> A syndrome, particularly of the atrioventricular valves, in which systole causes a sudden tensing of a scallop of a valve or an entire cusp producing the auscultatory click. Synonym: valvular prolapse. (05 Mar 2000) |
| click-murmur syndrome | <syndrome> Mitral valve prolapse (also known as Barlow's syndrome ), the most common heart valve abnormality, affecting 5-10% of the world population. Most patients have no symptoms and require no treatment, but some have fatigue and/or palpitations. The mitral valve prolapse can often be detected by a doctor during examination of the heart and confirmed with an echocardiogram. Patients are usually given antibiotics prior to any procedure which might introduce bacteria into the bloodstream, including dental work and minor surgery, because of an increased risk of infection of the abnormal heart valve. (12 Dec 1998) |
| clicking | A snapping, crepitant noise noted on excursions of the temporomandibular articulation, due to an asynchronous movement of the disk and condyle. (05 Mar 2000) |
| clicking rale | Short, sticking sound usually associated with opening of small bronchi on deep breathing, sometimes heard in early pulmonary tuberculosis. (05 Mar 2000) |
| clicking tinnitus | An objective clicking sound in the ear in cases of chronic catarrhal otitis media; it may be audible to the bystander as well as to the patient and is supposed to be due to an opening and closing of the mouth of the eustachian tube, or to a rhythmical spasm of the velum palati. (05 Mar 2000) |