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[Importance of coronary dilatation in patients after bypass operation]
R Hofmann1, K Kerschner, M Felbermayr
1I. Medizinische Abteilung, Allgemeines Krankenhaus, Linz.
Insights
Percutaneous coronary angioplasty (PTCA) offers a viable alternative to repeat bypass surgery for patients experiencing recurrent angina. This interventional procedure demonstrates calculable risks and positive outcomes in selected individuals.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiac Surgery
Background:
- Recurrent angina pectoris after coronary artery bypass graft (CABG) surgery presents a significant clinical challenge.
- Management options for post-CABG angina include medical therapy, repeat revascularization via angioplasty, or further surgery.
Purpose of the Study:
- To evaluate the feasibility and outcomes of percutaneous coronary angioplasty (PTCA) in patients with recurrent angina after prior bypass surgery.
- To compare PTCA with repeat surgery and medical management in this patient population.
Main Methods:
- A retrospective analysis of 342 consecutive patients with recurrent angina post-CABG.
- Patients were treated with PTCA (32%), repeat surgery (9%), or medical management (58%) based on coronary anatomy.
- Angioplasty was performed on native vessels and bypass grafts, with detailed success rates and complication tracking.
Main Results:
- Initial success rate for PTCA was 84% across 142 treated vessels.
- Complications included one death (0.9%) and five myocardial infarctions (4.5%).
- At 6 months, 59% of patients showed sustained improvement or remained symptom-free, with 64% becoming symptom-free overall.
Conclusions:
- Coronary angioplasty is a feasible alternative to repeat surgery for selected patients with recurrent angina post-CABG.
- PTCA offers calculable risks and can lead to significant symptom relief and improved clinical status.
- Careful patient selection based on coronary morphology is crucial for successful angioplasty outcomes.
Abstract:
342 consecutive patients with recurrent angina pectoris were investigated 4.9 +/- 2.9 years after bypass surgery. According to the respective coronary morphology, angioplasty (PTCA) was performed in 110 patients (32%), repeat surgery in 32 (9%) and 200 patients (58%) were treated medically. Angioplasty was undertaken in 113 native coronary arteries (18 via a patent venous graft) and 29 bypass grafts. One vessel was dilated in 84 patients (76%) and more than one vessel in 26 patients (24%), giving an average of 1.3 vessels per patient. The initial success rate was 84% (120 of 142 vessels). The success rate varied from 60% in the midportion of venous grafts to 100% in the bypass protected left main stem. One patient died from complications (0.9%) and 5 patients (4.5%) suffered a myocardial infarction. Revascularisation was complete in 64 patients (58%) and remained incomplete in 40 patients. Clinical state improved in all but 7 patients and 70 patients (64%) became symptom-free. After 6 months 88 patients were clinically reevaluated. 52 patients (59%) still showed improvement in anginal status or remained symptom-free. Due to recurrent symptoms a re-angioplasty was performed on 21 patients and 6 patients had to be reoperated. In conclusion, coronary angioplasty is frequently a feasible alternative to reoperation with calculable risks in patients with recurrence of symptoms after prior bypass surgery.