H. D. McIntosh, M.D. (Assoc.); R. E. Whalen, M.D.; A. I. Cohen, M.D.; R. G. Sumner, M.D.
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No Longer is it feasible to consider the presence of a gradient between the left ventricle and aorta as evidence of aortic valvular stenosis. Obstruction to outflow from the left ventricle may occur at the valvular, subvalvular, or supravalvular level. The valvular obstruction may be acquired or congenital. The subvalvular stenosis may be due to a diaphragm or to muscular obstruction which is apparent only during systole. Supravalvular obstruction is due to a narrowing of the aorta just above the sinuses of Valsalva.
Determination of the exact type of left ventricular outflow obstruction is imperative, since each lesion carries a
McIntosh HD, Whalen RE, Cohen AI, Sumner RG. Cinefluorographic and Hemodynamic Studies of Patients with Obstruction to the Outflow of the Left Ventricle.. Ann Intern Med. ;56:669–670. doi: 10.7326/0003-4819-56-4-669_3
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Published: Ann Intern Med. 1962;56(4):669-670.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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