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EFFICACY OF DELAYED RECANALIZATION AND THROMBOLYSIS ON ATRIOVENTRICULAR BLOCK IN ACUTE INFERIOR MYOCARDIAL INFARCTION

Objective To investigate the effects of delayed recanalization and thrombolysis on atrioventricular(AV) block in acute inferior myocardial infarction(AIMI).Methods A total of 212 patients, including 30 patients(group A)who underwent delayed recanalization of infarct-related artery (IRA) by PTCA within 12～18 hours after onset, 50 patients(group B) who received intravenous thrombolytic therapy within 12 hours of AIMI onset, 132 patients(group C) with AIMI who received conventional therapy, were enrolled in this study.Results In group A, the occurrence of AV block was decreased significantly (26.7% vs 6.7%, P O.05).Conclusion The delayed recanalization of IRA by PTCA within 12～48 hours after the onset of AIMI can reduce the incidence of A-V block and probably decrease the in-hospital mortality rate.