A modified Anderson-Wilkins electrocardiographic acuteness score for anterior or inferior myocardial infarction.

Research output: Contribution to journalArticle

Abstract

Background Optimal treatment of acute myocardial infarction (AMI) depends on the duration of the ischemia. The Anderson Wilkins (AW) electrocardiographic acuteness score has been shown to complement the historical timing in estimating the time interval from acute thrombotic coronary occlusion in patients presenting with chest pain and evolving myocardial infarction. The purposes of this study were to (1) compare the distributions of the previously developed AW acuteness score in a training population with either anterior or inferior AMI and (2) propose modifications to the formula to achieve distributions similar to the observed distributions of historical times from onset of pain. Methods Two hundred three and 177 patients were included as training and testing population, respectively. All patients had an anterior or an inferior AMI and were without confounding factors on the electrocardiogram. Results The training population had similar distributions of historical times from onset of pain, but differences in distributions of AW acuteness scores, between patients with anterior and inferior AMI (P<.0001). Eighty percent of the inferior AMI group had the highest possible AW acuteness score. Modification of a Q-wave criterion from &GE;30 to &GE;20 ms resulted in similar distributions in patients with anterior and inferior AMI both in the training and an independent testing population. Conclusions These results suggest that a modified AW acuteness score using a lower Q-wave duration criterion provides similar AMI timing information in patients with anterior and inferior locations. Clinical use of the AW acuteness score will only be practical if the calculation is automated

Details

Authors
  • Bo Hedén
  • Rasmus Ripa
  • Eva Persson
  • Qianzi Song
  • Charles Maynard
  • Paul Leibrandt
  • Thomas Wall
  • Timothy F Christian
  • Stephen C Hammill
  • Samuel S Bell
  • Olle Pahlm
  • Galen S Wagner
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Cardiac and Cardiovascular Systems
Original languageEnglish
Pages (from-to)797-803
JournalAmerican Heart Journal
Volume146
Issue number5
Publication statusPublished - 2003
Publication categoryResearch
Peer-reviewedYes