Coronary angioplasty of the unstable angina related vessel in patients with multivessel disease
European Heart Journal
|June 1, 1986
Summary
Percutaneous transluminal coronary angioplasty (PTCA) for unstable angina offers similar acute success in partial vs. total revascularization. However, partial revascularization leads to higher angina recurrence.
Area of Science:
- Cardiology
- Interventional Cardiology
Background:
- Unstable angina management requires effective revascularization strategies.
- Percutaneous transluminal coronary angioplasty (PTCA) is a key intervention.
- Assessing the impact of partial vs. total revascularization in unstable angina is crucial.
Purpose of the Study:
- To compare the efficacy of partial revascularization (PTCA of the ischemia-related vessel only) versus total revascularization in patients with unstable angina.
Main Methods:
- Retrospective analysis of 154 patients with unstable angina undergoing PTCA.
- Group I: Multivessel disease with partial revascularization (n=43).
- Group II: Single vessel disease with total revascularization (n=111).
Main Results:
- Initial PTCA success rates were identical (88%) in both groups.
- Emergency coronary artery bypass surgery and myocardial infarction rates were similar.
- Objective evidence (exercise testing, scintigraphy) showed incomplete revascularization in Group I.
- Group I had lower maximum workload and higher rates of angina, ST depression, and perfusion defects.
- Angina pectoris recurrence at 6 months was significantly higher in Group I (29% vs. 16%, P<0.05).
Conclusions:
- PTCA of the ischemia-related vessel only is effective for the acute phase of unstable angina, comparable to single-vessel disease treatment.
- Partial revascularization in multivessel disease leads to a higher long-term recurrence rate of angina pectoris.
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