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(Circulation. 1961;24:267.)
© 1961 American Heart Association, Inc.

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Left Atrial and Left Ventricular Pressures in Subjects without Cardiovascular Disease

Observations in Eighteen Patients Studied by Transseptal Left Heart Catheterization

EUGENE BRAUNWALD M.D.¹; EDWIN C. BROCKENBROUGH M.D.¹; CHARLES J. FRAHM M.D.¹; JOHN ROSS JR. M.D.¹

¹ From the Cardiology Branch and the Clinic of Surgery, National Heart Institute, Bethesda, Maryland.

Transseptal left heart catheterizations were carried out in 18 patients without apparent evidence of organic cardiovascular disease. These studies have permitted delineation of the pressures that exist in the left side of the heart in normal subjects studied in a basal physiologic state.