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[Percutaneous transluminal coronary angioplasty for postinfarction residual ischemia: mid- and long-term results]
F Orzan1, R Bonamini, A R Garachemani Asl
1Istituto di Medicina e Chirurgia Cardiovascolare, Università degli Studi, Torino.
Insights
Percutaneous transluminal coronary angioplasty (PTCA) shows good long-term results in recent myocardial infarction patients. This procedure offers a viable treatment option for improving outcomes and reducing major adverse cardiac events.
Area of Science:
- Cardiology
- Interventional Cardiology
- Clinical Outcomes Research
Background:
- Recent myocardial infarction (MI) poses significant risks for patients.
- Percutaneous transluminal coronary angioplasty (PTCA) is a common revascularization strategy.
- Long-term outcomes of early PTCA post-MI require continued evaluation.
Purpose of the Study:
- To assess the long-term clinical outcomes of patients undergoing PTCA within 30 days of a recent myocardial infarction.
- To evaluate the efficacy of simple balloon angioplasty in managing post-MI complications.
- To analyze factors influencing outcomes, including indication for PTCA and infarct characteristics.
Main Methods:
- Prospective study of 244 consecutive patients undergoing PTCA ≤30 days post-MI.
- Follow-up conducted at 1-year intervals, supplemented by physician/telephone contact for 6-102 months (median 39 months).
- Kaplan-Meier survival and event-free curves analyzed, with log-rank test for comparisons; included periprocedural events.
Main Results:
- Clinical success achieved in 85% of PTCA procedures.
- Overall mortality was 4.9%, myocardial infarction 7.7%, need for revascularization 13.9%, and recurrent angina 25.8% during follow-up.
- Subgroup analyses explored differences based on infarct type, vessel disease, and left ventricular ejection fraction.
Conclusions:
- Early PTCA following myocardial infarction demonstrates acceptable long-term results with a manageable rate of major adverse cardiac events.
- Simple balloon angioplasty can be effective in selected post-MI patients.
- Further research may refine patient selection and optimize PTCA strategies in the context of acute myocardial infarction.
Abstract:
Aim of this study was to assess the long-term results of PTCA in patients with a recent myocardial infarction. The study population consisted of 244 consecutive patients who underwent a PTCA < or = 30 days after myocardial infarction either because of angina (116 patients), or because of provoked ischemia (62 patients), or in the absence of both (66 patients). "Simple" balloon angioplasty, without adjunctive devices, was performed. Most of the patients were seen at 1 year intervals at the outpatient clinic; otherwise information was gathered either from the family physician or by telephone. The following events were noted during a follow-up of 6-102 months (median 39 months): death, myocardial infarction, need for re-PTCA or surgical revascularization, recurrence of angina. Survival and event-free curves were calculated according to the method of Kaplan and Meier; statistical comparisons between the curves were obtained by the log-rank test. Periprocedural deaths, infarctions and surgical revascularizations are included in the actuarial curves. Differences were examined between patients with Q and non-Q wave infarctions, single vessel versus multivessel disease, left ventricular ejection fraction > or 50% versus < 50%. A clinical success was achieved in 85% of the procedures. Sixteen patients were lost at follow-up. Overall, within the first 30 days and during follow-up, 12 (4.9%) patients died, 19 (7.7%) suffered from myocardial infarction, 34 (13.9%) required re-PTCA or surgical revascularization, and 63 (25.8%) experienced angina again.(ABSTRACT TRUNCATED AT 250 WORDS)