Alberto Benchimol, M.D., F.A.C.P.; Steven D. Promisloff, M.D.; Kenneth B. Desser, M.D.
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Eleven patients (ages from 28 to 59 years) with the auscultatory syndrome of midsystolic click and late systolic murmur were studied by left ventriculography, selective coronary arteriography, phonocardiography, and multiple external carotid arterial and apexcardiographic recordings. Aortic subvalvular and valvular gradients were measured during isoproterenol infusion and after catheter-provoked ventricular premature contractions. Coronary arteriography was normal in all patients, and there was no evidence of subaortic pressure gradient during isoproterenol infusion and postextrasystole-pressure measurement. Left ventriculography showed mitral regurgitation in 11 patients. Eight patients had left ventricular contraction rings and inferoapical dyskinesis; they all had abnormalities of the external carotid
Benchimol A, Promisloff SD, Desser KB. Noninvasive Manifestations of Abnormal Left Ventricular Contraction in Patients with the Syndrome of Midsystolic Click and Late Systolic Murmur.. Ann Intern Med. 1973;78:819. doi: 10.7326/0003-4819-78-5-819_1
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Published: Ann Intern Med. 1973;78(5):819.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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