Key result
Normal left ventricular function was preserved in a patient with total proximal occlusion of the entire native coronary circulation, presumably due to gradual occlusion allowing collateral perfusion.
Case Report (n=1)
Demonstrates that normal left ventricular function can be preserved despite total occlusion of the native coronary circulation if adequate collateral perfusion develops gradually.
Preserved LV function possible via collaterals in total occlusion; leaves open generalizability beyond this single case.
This report describes a unique case of normal left ventricular function in a patient with total proximal occlusion of the entire native coronary circulation in addition to an occluded left anterior descending bypass graft. Coronary flow was maintained by a sequential saphenous vein graft to the obtuse marginal and posterior descending arteries, with collateral filling of the left anterior descending vessel. Myocardial function was preserved, presumably because of the relatively gradual process of native coronary occlusion, allowing time for development of adequate collateral perfusion.
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Goldberger et al. (1980) conducted a case report in Total occlusion of right and left main coronary arteries (n=1). Total occlusion of native coronary circulation with collateral perfusion was evaluated on Left ventricular function. Normal left ventricular function was preserved in a patient with total proximal occlusion of the entire native coronary circulation, presumably due to gradual occlusion allowing collateral perfusion.
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