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Coronary bypass surgery after renal transplantation
Insights
Coronary artery bypass grafting offers symptomatic relief for patients with angina pectoris post-renal transplant. This study shows successful outcomes without common complications, improving exercise tolerance and cardiac ischemia.
Area of Science:
- Cardiology
- Nephrology
- Transplantation Immunology
Background:
- Patients with end-stage renal disease often develop coronary artery disease.
- Successful renal transplantation can improve cardiovascular risk factors but may not resolve existing coronary artery disease.
- Angina pectoris significantly impacts quality of life in renal transplant recipients.
Observation:
- Three patients with incapacitating angina pectoris underwent aortocoronary bypass surgery after successful renal transplantation.
- All patients experienced initial symptomatic improvement following the procedure.
- One patient also underwent left ventricular aneurysm resection.
Findings:
- Two patients showed objective improvement in exercise tolerance and reduced ischemic ST-T changes on treadmill testing, with mild residual angina.
- One patient remained free of angina but developed congestive heart failure symptoms postoperatively.
- No postoperative complications related to infection or renal function were observed, despite immunosuppressive therapy.
Implications:
- Aortocoronary bypass surgery appears to be a safe and effective option for renal transplant recipients suffering from severe angina pectoris.
- The procedure can lead to significant improvements in cardiac function and exercise capacity.
- Careful patient selection and management are crucial for optimizing outcomes in this complex patient population.
Abstract:
Aortocoronary bypass surgery was performed in three patients with incapacitating angina pectoris who had previously had successful renal transplantation. All patients had initial symptomatic improvement. Although two have mild angina pectoris, there is objective improvement in their exercise tolerance and in ischemic ST-T changes on treadmill exercise testing. One patient, who also had resection of a left ventricular aneurysm, remains free of angina but is symptomatic from congestive heart failure. There were no postoperative complications. To our knowledge, these three cases are the first in which aortocoronary bypass surgery has been performed successfully in patients who have had renal transplantation. Anticipated problems with infection in view of the immunosuppressive therapy and renal problems postoperatively were not encountered.