Value of transthoracic two-dimensional echocardiography in predicting viability in patients with healed Q-wave anterior wall myocardial infarction

Am J Cardiol. 1995 Nov 15;76(14):1002-6. doi: 10.1016/s0002-9149(99)80284-7.

Abstract

The role of transthoracic echocardiography as a predictor of recovery after revascularization has not yet been established. Two-dimensional echocardiography was performed in 15 patients with a healed anterior wall myocardial infarction and severe, isolated stenosis of the left anterior descending coronary artery before, and 3 to 6 months after angiographically confirmed successful revascularization. The asynergic segments were classified into 2 groups according to 2 different echocardiographic patterns: those showing a normal acoustic reflectance with normal end-diastolic thickness (pattern A segments) and those showing an increase in acoustic reflectance and reduced end-diastolic thickness (pattern B segments). We hypothesized that pattern A segments were more likely to recover (viable myocardium) and that pattern B segments were consistent with irreversibility. A total of 240 segments in the 15 patients were evaluated before and after revascularization. Sixty-seven segments were asynergic; of these, 52 were judged to have pattern A and 15 pattern B. Of the 52 pattern A segments, 27 were hypokinetic and 25 akinetic. All of the pattern B segments were akinetic (n = 9) or dyskinetic (n = 6). Pattern A was predictive of postoperative recovery in 39 of 52 segments (75%) (p < 0.0001); pattern B was predictive of irreversibly damaged tissue in 13 of 15 segments (87%) (p < 0.0001). Thus, in patients with healed anterior wall myocardial infarction, resting transthoracic echocardiography is a simple and reliable predictor of the behavior of asynergic segments after revascularization.

Publication types

  • Clinical Trial

MeSH terms

  • Adult
  • Chi-Square Distribution
  • Echocardiography*
  • Electrocardiography
  • Female
  • Follow-Up Studies
  • Heart / physiopathology
  • Humans
  • Male
  • Middle Aged
  • Myocardial Contraction
  • Myocardial Infarction / diagnostic imaging*
  • Myocardial Infarction / pathology
  • Myocardial Infarction / physiopathology
  • Myocardium / pathology*
  • Predictive Value of Tests
  • Tissue Survival