Comparison of Direct and Indirect Arterial Pressures in Aortic Regurgitation

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Abstract
IN patients with advanced aortic regurgitation Korotkoff sounds may be heard over the brachial artery when the sphygmomanometer cuff has been completely deflated. Diastolic pressures obtained by standard auscultatory methods are therefore commonly recorded as zero – a physiologic impossibility. It has been recommended that both the muffling1 and the disappearance2 of the Korotkoff sounds be used as the auscultatory guide for diastolic pressure. Too few measurements comparing direct and indirect arterial pressures in aortic regurgitation are available to determine which phase of the sound change, if either, is the more reliable index of diastolic pressure.Direct and indirect arterial . . .