Click-murmur Syndrome (Mitral Valve Prolapse)
Click-murmur syndrome is mitral valve prolapse (also known as Barlow’s syndrome), and the name describes what the doctor hears on auscultation of the heart. It is the most common heart valve abnormality, affecting 5-10% of the world population. Mitral valve prolapse is a drooping down or abnormal bulging of the mitral valve’s cusps backward into the left atrium during the systolic contraction of the heart (when blood is ejected from the heart into the circulation). Most patients have no symptoms and require no treatment, but some have fatigue and/or palpitations. Mitral valve prolapse can often be detected by a doctor during examination of the heart and confirmed with an echocardiogram. Mitral valve prolapse is often an asymptomatic condition but it may be marked by mitral regurgitation with symptoms such as chest pain, fatigue, dizziness, dyspnea, or palpitations with a tendency in some cases to endocarditis or ventricular tachycardia.