Aortic valve Aortic valve The aortic valve is a valve in the human heart between the left ventricle and the aorta. It is one of the two semilunar valves of the heart, the other being the pulmonary valve. The heart has four valves and the other two are the mitral and the tricuspid valves. The aortic valve normally has three cusps or leaflets, although in 1–2% of the population it is found to congenitally have two leaflets. The aortic valve normally has three cusps however there is some discrepancy in their naming. They may be called the left coronary, right coronary and
Mitral valve prolapse valve. The prevalence of MVP is estimated at 2–3% of the population. The condition was first described by John Brereton Barlow in 1966. In consequence, it may also be referred to as Barlow's syndrome, and was subsequently termed "mitral valve prolapse" by J. Michael Criley. Upon auscultation of an individual with mitral valve prolapse, a mid-systolic click, followed by a late systolic murmur heard best at the apex is common. The length of the murmur signifies the time period over which blood is leaking back into the left atrium, known as regurgitation. A murmur that lasts throughout the whole of