title: Q-wave and non-Q wave myocardial infarction--prospective study.
abstract: Fifty patients each of Q-wave myocardial infarction (QMI) and non-Q-wave myocardial infarction (NQMI) were studied clinically and followed up for one year. Significant differences were observed between the two groups concerning the mean age (higher in NQMI, p < 0.05), sex (more females in NQMI, p < 0.01), location of the infarct (inferior in QMI and anterolateral in NQMI, p < 0.01), past ischaemic episodes (higher in NQMI, p < 0.001), post infarction ischaemic episodes (higher in NQMI, p < 0.05), early mechanical and electrical complications (higher in QMI, p < 0.05), peak serum enzyme levels (higher in QMI, p < 0.05) and both early mortality (higher in QMI, p < 0.05) and subsequent mortality rates (higher in NQMI, p < 0.05). The total one year mortality was similar in both the groups (30%). When only anterolateral infarctions were considered longterm prognosis for QMI patients was worse than that of NQMI patients (65% vs 37.5%, p < 0.05). Contrariwise, irrespective of the type of infarction, QMI or NQMI, anterolateral infarction resulted in higher mortality than inferior wall infarction (46.7% vs 5% p < 0.001).
authors.affiliation: Department of Medicine, Medical College, Calcutta.
authors.forename: S
authors.initials: S
authors.lastname: Roy
authors.forename: S
authors.initials: S
authors.lastname: Mukherjee
mesh_terms: D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000503:physiopathology*; D011379:Prognosis; D011446:Prospective Studies