T/F: Early diastolic murmurs are due to aortic or pulmonic insufficieny.
True: severity of the reg is often inversely related to the duration of the mumur. With servere reg, aortic diastolic psi falls rapidly and may equalize with ventricular psi relatively early, causing marked reduction of intensity or cessation of the murmur. AS may also cause diastolic rumble at the apex-Austin Flint murmur. PI is associated with 2 forms of murmurs. In PI due to pulmonary HTN, there is a large diastolic gradient, high pitched murmur, follows the 2nd heart sound immediately and continues throughout diastole. In PI caused by valvular disease, there is usually a silent period between the pulmonic 2nd heart sound & the initiation of the murmur, which is relatively low in frequency.