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Percutaneous transluminal coronary angioplasty for patients with unstable angina pectoris
1Department of Internal Medicine, Faculty of Medicine, Kyoto University, Japan.
Insights
Percutaneous transluminal coronary angioplasty (PTCA) effectively treats unstable angina in most patients. However, high rates of restenosis may necessitate repeat procedures for sustained symptom control.
Area of Science:
- Cardiology
- Interventional Cardiology
Background:
- Unstable angina pectoris (UAP) poses significant cardiovascular risk.
- Pharmacological treatments are not always sufficient for refractory UAP.
Purpose of the Study:
- To evaluate the efficacy and limitations of percutaneous transluminal coronary angioplasty (PTCA) in patients with drug-refractory unstable angina.
Main Methods:
- Retrospective analysis of 76 patients with unstable angina pectoris.
- Assessment of procedural success, acute occlusion/reocclusion rates, and restenosis.
- Documentation of repeat PTCA procedures.
Main Results:
- PTCA achieved a 91% success rate in the initial treatment of unstable angina.
- High rates of acute occlusion and reocclusion were observed (95%).
- Restenosis occurred in 56.5% of successful cases, leading to repeat procedures in many patients.
Conclusions:
- PTCA is a viable option for managing most cases of refractory unstable angina.
- The high incidence of restenosis highlights the need for potential repeat interventions.
Abstract:
Percutaneous transluminal coronary angioplasty (PTCA) was successful in 91% of 76 patients with unstable angina pectoris refractory to pharmacological treatment. However, the rate of acute occlusion and reocclusion was rather high (95). Restenosis developed in 56.5% of successful cases after initial PTCA, and 29 patients underwent 2nd, and nine 3rd PTCA. Most refractory unstable angina can be controlled by PTCA, which may require repeating in some patients.