title: Regression of left ventricular aneurysm after delayed percutaneous transluminal coronary angioplasty (PTCA) in patients with acute myocardial infarction.
abstract: Two weeks after acute myocardial infarction (AMI), 23 patients received delayed percutaneous transluminal coronary angioplasty (PTCA) and 14 consecutive randomized selected patients received conservative treatment as a control group. Follow up intravenous and/or intraventricular left cine-ventriculography, as well as radionuclide ejection fraction were performed 6-24 months (mean 11.2 months) after the acute phase. The results showed no significant statistical differences between the two groups for age, sex, Killip class, left ventricular end-diastolic pressure, and medication. The PTCA group showed a significant increase in radionuclide left ventricular ejection fraction, when compared to the control group (20.4 +/- 0.3 vs. 2.05 +/- 1.2; P < 0.05), as well as in the cine-global ejection fraction (32.1 +/- 0.4 vs. 3.44 +/- 1.1; P < 0.05). The dyskinetic area and volume were found also to have greater reduction in the PTCA group than in the control group (-84.7 +/- 1.2 vs. -10.5 +/- 1.1 and -86.1 +/- 1.1 vs. -15.4 +/- 0.9; P < 0.05). There were no significant changes in diastolic or systolic circumferences for both group. In conclusion, delayed PTCA after AMI can reduce the left ventricular dyskinetic area, and improve cine-global ejection fraction. Intravenous first pass left ventriculography is a safe, simple, and reproducible method for evaluating left ventricular remodeling after acute myocardial infarction.
authors.affiliation: Department of Internal Medicine, Taichung Veterans General Hospital, Taiwan.
authors.forename: J S
authors.initials: JS
authors.lastname: Chen
authors.forename: C L
authors.initials: CL
authors.lastname: Hwang
authors.forename: D Y
authors.initials: DY
authors.lastname: Lee
authors.forename: Y T
authors.initials: YT
authors.lastname: Chen
mesh_terms: D000368:Aged; D000465:Algorithms; D015906:Angioplasty, Balloon, Coronary; D002985:Clinical Protocols; D005260:Female; D005500:Follow-Up Studies; D006322:Heart Aneurysm / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology / Q000628:therapy*; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000628:therapy*; D015635:Radionuclide Ventriculography; D012074:Remission Induction; D013318:Stroke Volume; D013997:Time Factors; D016896:Treatment Outcome; D016277:Ventricular Function, Left