[Does percutaneous coronary intervention in non-culprit vessels improve the prognosis of acute myocardial infarction complicated by pump failure?].

OBJECTIVES: To evaluate whether percutaneous coronary intervention (PCI)in non-culprit vessel lesions improves the short-term prognosis of acute myocardial infarction complicated by pump failure. METHODS: Fifty-six patients with acute myocardial infarction in hemodynamic subset 4 of Forrester's classification at hospitalization underwent PCI for multiple vessel lesions within 12 hr (6.1 +/- 3.4 hr) of the onset of acute myocardial infarction. No patients had left main trunk lesion. Twenty patients also underwent PCI for non-culprit vessel lesions (multivessel PCI group: M-PCI), but the remaining 36 did not (culprit vessel PCI group: C-PCI). The in-hospital prognosis was investigated from the hospital records. RESULTS: Complete revascularization was accomplished in 18 patients(90%)in the M-PCI. The rates of all in-hospital death were almost equivalent in both groups (M-PCI 30% vs C-PCI 42%, p = 0.21), but the rate of cardiac deaths was higher in the C-PCI than in the M-PCI (42% vs 15%, p < 0.05). Overall major adverse cardiac events occurred more often in the C-PCI than in the M-PCI(58% vs 25%, p < 0.05). Multivariate logistic regression analysis showed complete revascularization(odds ratio 0.11, 95% confidence interval 0.02-0.95, p < 0.05)and duration from onset of acute myocardial infarction to PCI < 6 hr (odds ratio 0.25, 95% confidence interval 0.06-0.98, p < 0.05) were negative predictors of in-hospital cardiac death, and prior myocardial infarction (odds ratio 4.97, 95% confidence interval 1.09-22.67, p < 0.05) was a positive predictor. CONCLUSIONS: PCI of non-culprit vessel lesions might improve the short-term prognosis of patients with acute myocardial infarction and pump failure.