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(Circulation. 1971;43:503.)
© 1971 American Heart Association, Inc.

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Use of Echocardiography in Patients with Prolapsed Mitral Valve

JAMES C. DILLON M.D.¹; CHARLES L. HAINE ¹; SONIA CHANG B.A.¹; HARVEY FEIGENBAUM M.D.¹

¹ From the Department of Medicine, Indiana University School of Medicine and the Krannert Institute of Cardiology, Marion County General Hospital, Indianapolis, Indiana.

The echocardiographic findings are described for five patients who had the prolapsed mitral valve syndrome, proven by cardiac catheterization and angiocardiography. In all five patients, the echocardiograms demonstrated posterior displacement of the posterior mitral leaflet during systole. In four of the patients there was also posterior displacement of the anterior leaflet. Four of the five patients had mitral insufficiency, demonstrated by cineangiography. These four patients demonstrated echocardiographic separation of the anterior and posterior leaflets of the mitral valve in late systole. The fifth patient did not show this separation, and she had no mitral insufficiency by selective cineangiography. Two patients were given amyl nitrite during the echocardiographic examination, and the echogram showed earlier separation of the anterior and posterior leaflets as well as lengthening of the murmur. Echocardiography should be a very useful noninvasive, yet direct, method for diagnosing, studying, and following patients with prolapse of the mitral valve.

Key Words: Ultrasound cardiography • Mitral insufficiency • Late systolic click syndrome • Billowed mitral valve • Ballooned mitral valve

Submitted on August 14, 1970
Accepted on December 14, 1970

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