Clinical implication of precordial ST segment depression during acute inferior myocardial infarction

The clinical implications of precordial ST segment depression during acute transmural inferior myocardial infarction(ATIMI) are controversial. To investigate this problem, ECG findings in 135 consecutive patients with ATIMI were compared with level of plasma enzymes, QRS scoring, serious complications and mortality in patients during hospitalization. Patients were classified according to the admission ECG. Seventy-six patients(Group A) had≥0.05mv ST segment depression, and 59 (Group B) had no or＜0.05mv ST segment depression in one or more precordial eads. Patients in group A had higher plasma peak CPK, GOT and LDH level, more QRS scoring, higher mortality and more serious complications than those in group B during hospitalization.