Which one of the following is characteristic of mitral valve prolapse syndrome -

Early diastolic murmurs sta at the same time as S2 with the close of the semilunar (aoic & pulmonary) valves and typically end before S1. Common causes include aoic or pulmonary regurgitation and left anterior descending aery stenosis. Mid-diastolic murmurs sta after S2 and end before S1. They are due to turbulent flow across the atrioventricular (mitral & tricuspid) valves during the rapid filling phase from mitral or tricuspid stenosis.characteristcs of mitral valve prolapse Late diastolic (presystolic) murmurs sta after S2 and extend up to S1 and have a crescendo configuration. They can be associated with AV valve narrowing.They include mitral stenosis, tricuspid stenosis, myxoma, and complete hea block Ref Davidson 23rd edition pg 435