Evaluation of formulas for estimating the final size of acute myocardial infarcts from quantitative ST-segment elevation on the initial standard 12-lead ECG.

Published

Journal Article

Previously developed formulas for predicting the final QRS estimated sizes of acute myocardial infarcts from the initial ST segment deviation are tested. The population contains patients with either anterior or inferior infarcts from two hospitals in Copenhagen, Denmark. The formula for anterior location that considers only the number of ECG leads with ST elevation achieved a high correlation (r = 0.70). However, the formula for inferior location that considers the quantity of ST elevation in inferior leads achieved a lower value (r = 0.52). Empiric modifications of this formula were constructed that considered either the quantity of ST elevation in (A) or the number of (B) involved non-inferior leads. Each modification achieved improvement in correlation with QRS estimated MI size in the original population (A: r = 0.63 and B: r = 0.65), and also in an independent test population (A: r = 0.57 and B: r = 0.62). These results suggest that the formula of Aldrich et al. for anterior location is valid for clinical application, but that further studies are required to determine if a comparably accurate method can be developed for inferior MI.

Full Text

Cited Authors

  • Clemmensen, P; Grande, P; Aldrich, HR; Wagner, GS

Published Date

  • January 1, 1991

Published In

Volume / Issue

  • 24 / 1

Start / End Page

  • 77 - 83

PubMed ID

  • 2056271

Pubmed Central ID

  • 2056271

Electronic International Standard Serial Number (EISSN)

  • 1532-8430

International Standard Serial Number (ISSN)

  • 0022-0736

Digital Object Identifier (DOI)

  • 10.1016/0022-0736(91)90084-y

Language

  • eng