This document discusses mitral valve prolapse and mitral regurgitation. It defines mitral valve prolapse as a condition where the mitral valve leaflets bulge into the left atrium during systole. Causes include myxomatous degeneration and disorders affecting the valve apparatus. Symptoms range from being asymptomatic to atypical chest pain. Echocardiography is the best diagnostic tool. Treatment options include beta blockers and valve repair or replacement. Mitral regurgitation is defined as abnormal backflow from the left ventricle to the left atrium. Common causes are mitral valve prolapse, rheumatic heart disease, ischemic heart disease and dilated cardiomyopathy. Clinical features include palpitations