Abstract
More aggressive therapy has been suggested for patients who have a non-Q wave myocardial infarction (MI) because of the frequency of subsequent unstable angina, recurrent MI, and high mortality rate compared to patients with Q wave MI. The present study was undertaken to investigate the effect of coronary angioplasty on regional myocardial function of the infarct zone in patients with angina early after a non-Q wave MI. The study population consisted of 36 patients undergoing successful coronary angioplasty within 30 days of a non-Q wave MI, in whom sequential left ventricular anglograms of adequate quality were obtained before the initial procedure and at follow-up angiography. The global ejection fraction increased significantly from 60 ± 9% to 67 ± 6% (p = 0.0003). This significant increase in the global ejection fraction was primarily due to a significant improvement in the regional myocardial function of the infarct zone. The results of the present study show not only that ischemic attacks early after a non-Q wave MI may lead to prolonged regional myocardial dysfunction but more important that this depressed myocardium has the potential to achieve normal contraction after successful coronary angioplasty.

dx.doi.org/10.1016/0002-8703(90)90068-9, hdl.handle.net/1765/58968
American Heart Journal
Department of Cardiology

Suryapranata, H, Serruys, P.W.J.C, Beatt, K.J, de Feyter, P.J, van den Brand, M.J.B.M, & Roelandt, J.R.T.C. (1990). Recovery of regional myocardial dysfunction after successful coronary angioplasty early after a non-Q wave myocardial infarction. American Heart Journal, 120(2), 261–269. doi:10.1016/0002-8703(90)90068-9