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Colon infarction after ruptured abdominal aortic aneurysm
1Harborview Medical Center, University of Washington School of Medicine, Seattle.
Archives of Surgery (Chicago, Ill. : 1960)
|August 1, 1992
Summary
Ruptured abdominal aortic aneurysm can cause lethal colon ischemia. Maintaining cardiac output and avoiding alpha-adrenergic agents during surgery may prevent this complication.
Area of Science:
- Vascular Surgery
- Gastrointestinal Surgery
- Critical Care Medicine
Background:
- Colon infarction is a severe complication of ruptured abdominal aortic aneurysm (AAA).
- Identifying risk factors for colon ischemia in AAA patients is crucial for improving outcomes.
Purpose of the Study:
- To compare patient features and identify predictors of colon ischemia in ruptured AAA survivors.
- To determine factors associated with mortality in ruptured AAA patients who develop colon ischemia.
Main Methods:
- Retrospective case-control study comparing 25 ruptured AAA patients with colon ischemia to 25 without.
- Analysis of demographic, anatomic, hemodynamic, and clinical variables.
Main Results:
- Lower perioperative cardiac output was significantly associated with colon ischemia.
- Increased use of alpha-adrenergic vasoconstrictor agents correlated with colon ischemia development.
- Aneurysm location, shock, volume administration, graft type, and IMA patency were not significant predictors.
- Mortality was higher in patients with colon ischemia (68%) compared to those without (36%).
Conclusions:
- Perioperative cardiac output maintenance is critical for preventing colon ischemia after ruptured AAA repair.
- Avoiding alpha-adrenergic vasopressors may reduce the risk of this lethal complication.
- These findings emphasize the importance of hemodynamic management in high-risk surgical patients.