ANATOMIC EXPLANATION OF MOBILE SYSTOLIC CLICKS - IMPLICATIONS FOR THECLINICAL AND ECHOCARDIOGRAPHIC DIAGNOSIS OF MITRAL-VALVE PROLAPSE

An echocardiogram (echo) is often ordered for suspected mitral valve p rolapse (MVP), Using echo as the gold standard, we conducted a meticul ous physical examination on 61 patients with this referral diagnosis, Ninety percent of patients with negative physical examination and echo results for MVP had physical examination findings likely to have been misinterpreted as MVP by the referring physician, Redundant portions of the mitral valve apparatus were found in 57% of patients with MVP o n our physical examination but not on echo. A carefully performed phys ical examination (including dynamic auscultation) can exclude MVP, Not all mobile systolic clicks are associated with anatomic echo prolapse ; they can be generated by redundant chordae tendineae and, in the abs ence of echo prolapse, probably by redundant leaflets. Patients with m obile systolic clicks should have an echo to determine the portion of the spectrum of echo prolapse present and to determine risk stratifica tion and management.