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Coronary angioplasty in patients with prior coronary artery bypass grafting
T M Kolettis1, H C Miller, D P De Bono
1Department of Cardiology, Royal Infirmary, Edinburgh, U.K.
Insights
Percutaneous transluminal coronary angioplasty offers a viable alternative to repeat surgery for patients with prior bypass grafting experiencing symptom recurrence. While initial success is high, restenosis and new lesions remain challenges, with longer asymptomatic intervals predicting better long-term outcomes.
Area of Science:
- Cardiovascular Interventions
- Interventional Cardiology
Background:
- Coronary artery bypass grafting (CABG) is a common treatment for coronary heart disease.
- Symptom recurrence after CABG often necessitates further intervention.
- Percutaneous transluminal coronary angioplasty (PTCA) is an alternative to repeat surgical revascularization.
Purpose of the Study:
- To evaluate the clinical and angiographic outcomes of PTCA in patients with prior CABG.
- To assess the efficacy and limitations of PTCA in managing stenotic grafts and native vessels post-CABG.
Main Methods:
- Retrospective analysis of 47 patients with prior CABG undergoing PTCA.
- Angioplasty performed on 23 stenotic bypass grafts and 37 native coronary artery lesions.
- Assessment of angiographic success and clinical follow-up for symptom recurrence and reintervention.
Main Results:
- Satisfactory angiographic results achieved in 42 patients (58 treated sites).
- Symptomatic improvement in 20 patients; recurrence in 22 patients within a median 18-month follow-up.
- High initial success rates (high success rates) and low complication rates, but restenosis and new lesions are significant issues.
Conclusions:
- PTCA is a feasible alternative to repeat CABG for symptom recurrence after bypass surgery.
- Longer asymptomatic intervals (>6 months) post-CABG correlate with better long-term PTCA outcomes.
- Restenosis and new lesion development necessitate ongoing management strategies in this patient cohort.
Abstract:
We studied the clinical and angiographic outcome of patients with prior coronary arterial bypass grafting who underwent percutaneous transluminal coronary angioplasty at the Royal Infirmary of Edinburgh. Over a 4 year period, 47 patients with prior bypass surgery underwent angioplasty of 23 stenotic graft sites and 37 stenotic sites of native vessels. The procedure was performed a mean of 31.3 months after surgery for recurrence of symptoms refractory to maximal medical treatment. Satisfactory angiographic results were achieved in 42 patients (58 stenotic grafts or native vessels). At a median follow up period of 18 months, 20 patients were symptomatically improved, but 22 patients experienced recurrence of symptoms a mean of 4.7 months after angioplasty, despite a good initial angiographic result. Overall, 4 patients had a repeat bypass grafting and 9 patients had a repeat angioplasty. Angioplasty can be used as an alternative to a repeat operation in patients with prior bypass grafting who experience recurrence of symptoms. Initial success rates are high and complication rates low. Restenosis or development of new lesions in the native circulation, and/or in the grafts, remain significant problems. Patients with a long asymptomatic interval (greater than 6 months) between the bypass operation and recurrence of symptoms are more likely to have better long-term results after successful angioplasty, perhaps because of slower progression of atherosclerotic heart disease.