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Application of clinically valid cardiac risk factors to aortic aneurysm surgery
Insights
This study analyzed cardiac risk factors in 97 patients undergoing surgery for nonruptured aortic aneurysms. Clinically evident coronary artery disease significantly increased operative cardiac complications and mortality.
Area of Science:
- Cardiovascular Surgery
- Vascular Surgery
- Cardiac Risk Assessment
Background:
- Aneurysms of the abdominal aorta are a significant vascular disease.
- Assessing cardiac risk is crucial for patients undergoing aortic aneurysm repair.
- Coronary artery disease (CAD) is a common comorbidity in patients with aortic aneurysms.
Purpose of the Study:
- To analyze the operative outcomes of nonruptured infrarenal aortic aneurysms.
- To identify clinically identifiable cardiac risk factors influencing surgical outcomes.
- To evaluate the impact of coronary artery disease on perioperative cardiac complications.
Main Methods:
- Retrospective analysis of 97 consecutive patients with nonruptured infrarenal aortic aneurysms.
- Review of preoperative clinical data focusing on cardiac risk factors.
- Assessment of operative mortality and nonfatal myocardial infarction rates.
Main Results:
- 46% of patients had clinically evident coronary artery disease.
- Operative mortality was 4%, with all deaths being cardiac-related.
- Cardiac complications occurred exclusively in patients with known CAD; no mortality in patients without cardiac history.
- Prior myocardial infarction and congestive heart failure were significant negative predictors of outcome.
Conclusions:
- Patients with nonruptured aortic aneurysms and CAD face increased cardiac risks during surgery.
- Coronary arteriography and bypass may be indicated for select patients with CAD prior to aneurysm repair.
- Invasive cardiac screening is limited for asymptomatic patients with aneurysms.
Abstract:
The operative outcome of 97 consecutive nonruptured infrarenal aortic aneurysms is analyzed regarding clinically identifiable cardiac risk factors. Clinically evident coronary artery disease was present in 45 patients (46%). Operative mortality was 4% (four cardiac deaths) with an additional 4% nonfatal postoperative myocardial infarction rate. All cardiac complications occurred in patients with clinically evident coronary artery disease, while no mortality occurred in 52 patients lacking a preoperative history of myocardial infarction, congestive heart failure, or angina. Preoperative risk factors having a significant negative influence on outcome include a history of prior myocardial infarction and compensated congestive heart failure. Few patients with aneurysms who have clinical evidence of coronary artery disease are indicated for coronary arteriography and bypass prior to aneurysm repair. Furthermore, indications for invasive cardiac screening of the patient with an aneurysm who lacks cardiac symptoms are limited.