Evaluation of serial QRS changes during acute inferior myocardial infarction using a QRS scoring system

Academic Article

Abstract

  • The evolution of changes in the QRS complex during the initial 3 days after the onset of an initial inferior myocardial infarction (MI) was studied in 82 consecutive patients. Each patient's standard 12-lead electrocardiogram was assigned points (a QRS score) according to the absolute duration of the Q and R waves and the amplitude ratios of R-to-Q and R-to-S waves. This QRS score has been demonstrated to correlate (r = 0.74) with the anatomic extent of single inferior MI. By this sytem, 43 patients (53% of the study group) had an initial electrocardiogram that registered a score of 0 and developed QRS points only after admission. The QRS scores of 18 additional patients (22% of the study group) changed after admission. Forty-nine score changes were noted on Day 2 and 18 on Day 3. All of these changes resulted in an increased QRS score. Alteration of the QRS complex during initial inferior MI evolves over 2 to 3 days in many patients. There is a distinct pattern to this evolution, which results in sequential increases in a QRS score based upon electrocardiographic indicators of the extent of myocardial necrosis. This QRS scoring system might be applied to evaluate clinically interventions aimed at limiting the extent of necrosis in patients with initial acute inferior MI. © 1983.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Anderson CI; Harrison DG; Stack NC; Hindman NB; Ideker RE; Palmeri ST; Selvester RH; Wagner GS
  • Start Page

  • 252
  • End Page

  • 256
  • Volume

  • 52
  • Issue

  • 3