Early changes in the time course of myocardial contraction after correcting aortic regurgitation.
BACKGROUND: Correcting aortic regurgitation causes significant changes in left ventricular loading conditions, but few observations have been made intraoperatively of early effects on myocardial function. METHODS: We studied 18 patients (mean age, 59+/-12 years; 14 men) in whom aortic regurgitation was corrected with a stentless biologic valve. Overall left ventricular function was studied by thermodilution cardiac output, ventricular filling pressure, and systemic arterial pressure. Regional...Expand abstract
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