Abstract
This study sought to assess the effect of acute alcohol intake on ischemic preconditioning (IPC) in humans using the clinical model of 2 sequential balloon inflations during a percutaneous coronary intervention (PCI). Ischemic preconditioning is the most potent form of endogenous myocardial protection from irreversible ischemic injury. Experimental observations suggest that acute ethanol administration might abolish IPC. We studied 30 consecutive patients (22 men, mean age 65 years) undergoing elective coronary angioplasty who were randomized to receive an oral dose of 40 g ethylic alcohol (administered as 149 ml of Gordon's Gin) or 149 ml of water 30 min before PCI. Intracoronary electrocardiogram was continuously monitored to assess the greatest ST-segment elevation or depression from baseline. In placebo-treated patients, the change of ST-segment shift during the second inflation was significantly smaller than that during the first inflation (19.3 +/- 9.1 vs. 15.7 +/- 8.7, p = 0.005). In contrast, in gin-treated patients, the change of ST-segment shift during the second inflation was significantly greater than that during the first inflation (18.7 +/- 7.2 vs. 22 +/- 10, p = 0.03). The group-inflation interaction for ST-segme...Continue Reading
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