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Published on: September 15, 2023
Coronary artery bypass grafting within 30 days of an acute myocardial infarction
T Hirotani1, T Kameda, S Shirota
1Department of Cardiovascular Surgery, Tokyo Saiseikai Central Hospital, 1-7-14 Mita, Minato-ku, Tokyo 108-0073, Japan.
Insights
Coronary artery bypass grafting soon after acute myocardial infarction (AMI) carries high risks. However, using arterial grafts improves long-term survival, suggesting their use in select early post-AMI patients.
Area of Science:
- Cardiovascular Surgery
- Interventional Cardiology
Background:
- Early surgical intervention is considered for symptomatic patients post-acute myocardial infarction (AMI).
- Coronary artery bypass grafting (CABG) shortly after AMI presents significant risks.
- Evaluating the outcomes of early CABG after AMI is crucial.
Purpose of the Study:
- To assess the results of coronary artery bypass grafting performed soon after an acute myocardial infarction.
- To identify predictors of operative mortality in patients undergoing early CABG post-AMI.
Main Methods:
- Retrospective analysis of 478 consecutive patients who underwent CABG between November 1991 and November 1999.
- Focus on 68 patients who underwent CABG within 30 days of AMI.
- Univariate and multivariate analyses were conducted to evaluate operative mortality predictors.
Main Results:
- Operative mortality was significantly higher (7.4%) in patients undergoing early CABG post-AMI compared to those without (0.8%).
- Coronary artery bypass grafting without arterial grafts was a predictor of survival.
- Patients receiving arterial grafts showed better long-term survival than those with venous grafts alone.
Conclusions:
- Coronary artery bypass grafting using arterial grafts, when indicated, may be performed early after AMI if hemodynamic conditions are unstable.
- Arterial grafts are associated with improved long-term survival in early post-AMI CABG patients.
Unlabelled:
Early surgical intervention is now often considered for symptomatic patients after an acute myocardial infarction. Conversely coronary artery bypass grafting soon after an acute myocardial infarction poses substantial risks. The present study was performed to evaluate the results of Coronary artery bypass grafting soon after an acute myocardial infarction.
Methods:
From November 1991 to November 1999, 478 consecutive patients underwent coronary artery bypass grafting and 68 of these underwent an operation within 30 days of AMI. The data of these patients were analyzed retrospectively. Univariate and multivariate analyses of many variables were performed regarding operative mortality.
Results:
Operative mortality (7.4%) was significantly higher in the patients with an acute myocardial infarction than in the patients without it (0.8%) during the same period as the subjects of this study. Coronary artery bypass grafting without arterial grafts was solely determined to be the predictor of survival. The survival curve demonstrated better long-term results in patients undergoing bypass grafting with arterial grafts than in patients undergoing bypass grafting with venous grafts alone.
Conclusions:
If hemodynamic conditions can not be stabilized, then coronary artery bypass grafting using arterial grafts, when indicated, should be performed even early after AMI.
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