QT interval prolongation in acute myocardial infarction.

摘要: The relationship between corrected QT (QTc) interval and clinical factors in acute myocardial infarction (AMI) was studied, as well long-term prognostic implications of QTc after AMI. measured on admission to the coronary care unit (CCU). Patients with AMI who showed ventricular fibrillation or severe tachycardia (n = 27) had prolonged comparison patients without arrhythmias (VA) noninfarction patients. at discharge from hospital 463 survivors anterior infarcts longer than those inferior infarcts. VA CCU QTc. died (3-6 years) shorter QTc; explained by digitalis therapy. Among (less 66 bundle branch block quinidine, within six months tended have survivors. intervals were first two days CCU, post-CCU day, discharge, 1-3, 6 12 160 years). highest values registered lowest 1-year control. During phase, Those subendocardial intervals. reinfarcted (particularly when sudden) during period; significant independent value for predicting major cardiac events. study III. Metoprolol 59) placebo 52) given prior 70 decreased both groups 3-month control; most marked beta-receptor blockade metoprolol follow-up. suddenly In a prospective collaborative study, 865 All 30 medication pacemaker therapy which would influence When this taken into consideration, significantly 180 1 year.(ABSTRACT TRUNCATED AT 400 WORDS)