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Ruptured abdominal aortic aneurysms: factors affecting mortality rates
L M Harris1, G L Faggioli, R Fiedler
1Department of Surgery, State University of New York, Buffalo.
Journal of Vascular Surgery
|December 1, 1991
Summary
High mortality from ruptured abdominal aortic aneurysms is linked to perioperative events. Improving intraoperative care and managing postoperative organ failure are key to enhancing survival rates.
Area of Science:
- Vascular Surgery
- Surgical Outcomes
- Aortic Aneurysm Research
Background:
- Ruptured abdominal aortic aneurysms (rAAA) carry a high mortality rate.
- Understanding perioperative factors influencing survival is crucial for improving patient outcomes.
Purpose of the Study:
- To analyze the impact of preoperative, intraoperative, and postoperative factors on mortality following surgery for ruptured abdominal aortic aneurysms.
- To identify predictors of early and late deaths in this patient population.
Main Methods:
- Retrospective review of 113 operations for ruptured abdominal aortic aneurysms.
- Examination of preoperative, intraoperative, and postoperative variables.
- Analysis of factors influencing early (less than 48 hours) and late (greater than 48 hours) mortality.
Main Results:
- Overall mortality rate was 64% (72/113).
- Early deaths were associated with preoperative status (cardiac arrest, acidosis) and intraoperative events (hypotension, transfusion needs).
- Late deaths were linked to postoperative organ failure (renal, respiratory) and reoperation; postoperative renal failure was the strongest predictor of overall mortality.
Conclusions:
- Survival after ruptured abdominal aortic aneurysm repair is influenced by a combination of preoperative conditions and perioperative complications.
- Late mortality is independent of preoperative status, challenging resource conservation arguments for denying surgery.
- Improving survival necessitates reducing intraoperative complications and optimizing management of postoperative organ system failure.