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Acute occlusion after percutaneous transluminal coronary angioplasty--a new approach
Insights
Acute coronary occlusion after angioplasty is rare but serious. Most cases were resolved with medication or repeat procedures, suggesting coronary artery spasm may be a factor.
Area of Science:
- Cardiology
- Vascular Surgery
Background:
- Coronary angioplasty is a common procedure for treating coronary artery disease.
- Acute occlusion is a rare but significant complication following angioplasty.
Purpose of the Study:
- To investigate the incidence, presentation, and management of acute coronary occlusion after angioplasty.
- To explore potential mechanisms, such as coronary artery spasm, contributing to acute occlusion.
Main Methods:
- Retrospective review of 935 coronary angioplasty procedures performed between July 1980 and November 1982.
- Analysis of patient data, including timing of occlusion, interventions, and outcomes.
Main Results:
- Twenty out of 935 patients (2.1%) developed acute coronary occlusion.
- Nineteen of these 20 cases occurred within 3 hours of surgery or heparin cessation.
- Fifteen patients were successfully treated with nitrates, nifedipine, or repeat angioplasty, while 5 required emergency surgery. Thrombosis was rarely evident.
Conclusions:
- Acute coronary occlusion is an infrequent complication of angioplasty, often occurring shortly after the procedure or heparin withdrawal.
- Medical management and repeat angioplasty are frequently successful, indicating that coronary artery spasm might be a key etiological factor.
Abstract:
Between July 1980 and November 1982, there were 935 coronary angioplasties attempted at Emory University Hospital. Of these patients, 20 developed acute occlusion. Of these 20, 19 presented within 3 hr of surgery or within 3 hr after stopping a continuous heparin infusion. Five patients required emergency surgery, but in 15 nitrates, nifedipine, and/or repeat angioplasty reopened the artery and the patient could be stabilized on continuous infusions of heparin and nitroglycerin. In only one case was an occluding thrombus evident on angiographic examination. The mechanism of acute occlusion is unknown, but coronary artery spasm may play a role.
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