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Cardiac risk in abdominal aortic surgery
B W Lundqvist1, R Bergström, E Enghoff
1Department of Surgery, University of Uppsala, Sweden.
Insights
Cardiac complications are common after abdominal aortic surgery, even in low-risk patients. The Goldman risk score, angina, hypertension, and renal insufficiency are key predictors, highlighting the need for cardiac evaluation before surgery.
Area of Science:
- Cardiology
- Vascular Surgery
- Anesthesiology
Background:
- Abdominal aortic surgery carries significant cardiac risks.
- Assessing preoperative cardiac risk is crucial for patient outcomes.
- Existing risk stratification tools may not fully capture all risks.
Purpose of the Study:
- To identify independent predictors of cardiac complications following abdominal aortic surgery.
- To evaluate the effectiveness of the Goldman risk score and ASA classification in this patient population.
Main Methods:
- Prospective study of 78 patients undergoing abdominal aortic surgery.
- Application of the Goldman risk score and American Society of Anesthesiologists (ASA) classification.
- Logistic regression analysis to identify independent risk factors for cardiac complications.
Main Results:
- 32% of patients experienced cardiac complications; 16% had myocardial infarctions, with a 7% mortality rate.
- Goldman risk score, angina, hypertension, and renal insufficiency were significantly correlated with postoperative cardiac events.
- No significant correlation was found with a history of myocardial infarction, chronic heart failure, or the ASA score.
Conclusions:
- The Goldman risk score, angina, hypertension, and renal insufficiency are important predictors of cardiac complications after abdominal aortic surgery.
- A significant incidence of cardiac complications occurred in the low-risk Goldman score category, suggesting its limitations.
- Preoperative cardiac function testing is recommended for patients undergoing abdominal aortic surgery, irrespective of their perceived risk score.
Abstract:
Seventy-eight patients were included in a prospective study of the cardiac risk in abdominal aortic surgery. The Goldman risk score and the American Society of Anesthesiologists (ASA) classification system were applied besides several individual clinical risk factors. Thirty-three patients developed some kind of cardiac event, 13 of which were myocardial infarctions leading to death in six patients. Computer aided stepwise logistic procedure was used to determine risk factors independently correlated with these complications. This study showed that the Goldman risk score, angina, hypertension and renal insufficiency were significantly correlated with postoperative cardiac complications while no correlations were demonstrated with history of myocardial infarction, chronic heart failure or the ASA score system. A high incidence of cardiac complications (32%) was also found in the low-risk category in the Goldman score system, which indicates the need for cardiac function tests before abdominal aortic surgery.