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  • Title: Effects of coronary bypass grafting on resting left ventricular contraction in patients studied 1 to 2 years after operation.
    Author: Zir LM, Dinsmore R, Vexeridis M, Singh JB, Harthorne JW, Daggett WM.
    Journal: Am J Cardiol; 1979 Oct; 44(4):601-6. PubMed ID: 314748.
    Abstract:
    Left ventricular contraction was evaluated with angiography in 51 patients 1 to 2 years after coronary arterial bypass surgery. The left ventricle was classified into five segments, and segmental ventricular wall motion was analyzed with subjective and objective methods. With subjective analysis, 25 percent of asynergic segments showed improvement, 72 percent no change and 3 percent deterioration in contraction. There was a 5 percent incidence rate of new wall motion abnormalities in segments that were judged normal from the preoperative ventriculogram. Objective analysis revealed significant improvement in contraction of asynergic segments in each of the five left ventricular segments analyzed. Thus, 1 to 2 years after coronary bypass surgery, there was a significant reduction in left ventricular segmental wall motion abnormalities, and the incidence of deterioration in contraction was small.
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