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(Circulation. 1968;38:426.)
© 1968 American Heart Association, Inc.

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A Study of Duroziez's Murmur of Aortic Insufficiency in Man Utilizing an Electromagnetic Flowmeter

JOHN D. FOLTS B.S.E.E.¹; WILLIAM P. YOUNG M.D.¹; GEORGE G. ROWE M.D.¹

¹ From the Departments of Medicine and Surgery, University of Wisconsin Medical School, 1300 University Avenue, Madison, Wisconsin.

Femoral arterial blood flow was recorded with an electromagnetic flowmeter at the time of open heart surgery on subjects with and without aortic insufficiency. The records demonstrated that subjects with severe aortic insufficiency and Duroziez's murmur had a large amount of retrograde flow in the femoral artery. Those subjects without significant aortic insufficiency and no Duroziez's murmur had little or no backflow. When only a moderate amount of aortic insufficiency was present, the correlation was less satisfactory. In some subjects who had femoral backflow, a second recording was made from the femoral artery after the aortic valve had been replaced, and in these instances there was no longer any measurable backflow. Postoperatively these patients did not have Duroziez's murmur.

It is concluded that Duroziez's crural murmur in subjects with aortic insufficiency is associated with retrograde diastolic femoral arterial blood flow.

Key Words: Femoral artery flow • Openheart surgery • Hemodynamics • Physical diagnosis

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