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August 14, 1967


JAMA. 1967;201(7):27-40. doi:10.1001/jama.1967.03130070005003

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Myocardial Revascularization: No Immediate Benefit Seen  Two reports by investigators at the University of Minnesota Medical School suggest that there is no immediate benefit to the ischemic heart from myocardial revascularization.While the long-term value of revascularization is generally recognized, its immediate influence on myocardial blood flow remains in question.Some investigators have reported apparent immediate benefit by flow from a bleeding implant into the myocardial sinusoids. Others have denied that there is any blood flow from the implant prior to the development of collateral circulation.There is some experimental evidence that suggests vein graft implants into the myocardium provide some degree of immediate revascularization. On the other hand, dogs studied within 24 hours after mammary artery implant did not demonstrate communication with myocardial vessels (Archives of Surgery94:747 [June] 1967).Since a source of immediate augmentation of blood supply to the ischemic heart would be of great