Early diastolic murmurs are due to aortic or pulmonic insufficiency.
True or False.
True: The severity of regurgitation is often inversely related to the duration of the murmur. With severe regurge, aortic diastolic pressure falls rapidly and may equalize with ventricular pressure relatively early, causing marked reduction of intensity or cessation of the murmur. Aortic insufficiency may also cause a diastolic rumble at the apex- an Austin-Flint murmur. Pulmonary insufficiency due to pulmonary hypertension, there is a large diastolic gradient. The murmur is high- pitched, follows the second heart sound immediately, and continues throughout diastole. In pulmonary insufficiency caused by valvular disease, there is usually a silent period b/w the pulmonic second heart sound and the initiation of the murmur, which is relatively low in frequency.