Mitral valve prolapse in children.

Mitral valve prolapse is extremely common in children. It is diagnosed by the presence of a nonejection click with or without an associated murmur. In isolated mitral valve prolapse, the prognosis is excellent, but regular office visits are necessary for cardiac status review and infective endocarditis prophylaxis. Patients with significant dysrhythmias represent a small subset with an unknown long-term prognosis.