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Operative risk in patients with previous coronary artery bypass
Insights
Patients undergoing coronary artery bypass surgery and myocardial revascularization are suitable candidates for subsequent operations. This study found low complication rates in patients needing further surgical procedures after initial bypass, suggesting acceptable risk.
Area of Science:
- Cardiology
- Cardiac Surgery
- Vascular Surgery
Background:
- Coronary artery disease (CAD) management often involves surgical revascularization.
- The safety of subsequent non-cardiac or cardiac operations in patients with prior coronary artery bypass grafting (CABG) requires evaluation.
Purpose of the Study:
- To assess the outcomes and risks associated with further surgical procedures in patients who have previously undergone coronary artery bypass and myocardial revascularization.
Main Methods:
- Retrospective review of medical records for 141 patients who had undergone coronary artery bypass and myocardial revascularization.
- Analysis of subsequent surgical procedures, including type (elective vs. emergency), complications, and mortality.
Main Results:
- Fifteen percent (20/141) of patients required a subsequent operation within five years post-CABG.
- Elective operations (12%) had no deaths, with minor complications like myocardial infarction and arrhythmias.
- Emergency operations (3%) had one death due to sepsis following splenectomy.
Conclusions:
- Patients with a history of myocardial revascularization appear to be acceptable surgical risks for both elective and emergency procedures.
- Further research is needed to compare the risk in this cohort versus patients with CAD who have not had bypass surgery.
Abstract:
The records of 141 patients who had had coronary artery bypass and myocardial revascularization were reviewed. Fifteen percent (20) of the patients in this series required a surgical procedure from three months to five years following coronary artery bypass. Twelve percent (16) of these patients had elective operations, and 3% had emergency operations. In the elective group there were no deaths. One patient had a proved myocardial infarction, and three patients had transient arrhythmias with no changes in myocardial enzymes. In the emergency group there was one death, from sepsis following splenectomy for splenic abscess. Although the series is small, the data suggest that patients with coronary artery disease who have had myocardial revascularization are acceptable risks for elective and emergency operations. Whether the risk is lower in this group as compared to that in other patients with coronary disease who have not had bypass surgery has not been demonstrated.