Open AccessRelationship between electrocardiographically estimated infarct size and morbidity during a two‐year follow‐up
Author(s) -
Herlitz J.,
Hjalmarson Å
Publication year - 1985
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960081204
Subject(s) - medicine , cardiology , myocardial infarction , electrocardiography , infarction , heart failure , angina , st segment , precordial examination
In 587 patients with a first myocardial infarction (MI) the electrocardiographically (ECG) estimated infarct size was related to morbidity during a two‐year follow‐up. Patients with transmural MI (Q‐ or R‐wave changes in standard ECG) were more often treated for heart failure and returned to work less frequently than patients with subendocardial MI (ST‐T‐wave changes only). There were trends indicating a higher reinfarction rate in patients with subendocardial MI, whereas angina pectoris was observed as frequently in both groups. In a subset of patients with anterior MI, infarct size was estimated from the total Q‐ and R‐wave amplitude in 24 precordial leads 4 days after arrival in hospital. A positive relationship was observed between ECG‐estimated infarct size and treatment for heart failure, and patients with smaller infarctions according to ECG criteria returned to work less frequently. A higher reinfarction rate was observed in patients with smaller infarctions. In patients with inferior MI there were mostly weaker correlations between ECG‐estimated infarct size (Q‐ and R‐wave changes in leads II, III, and aVF) and morbidity during the two‐year follow‐up.