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Abdominal complications following cardiopulmonary bypass in open-heart surgery
Insights
Abdominal complications, particularly gastrointestinal bleeding, occurred in 1.6% of open-heart surgeries using cardiopulmonary bypass, leading to a 36% mortality rate. Reoperation and prolonged bypass increased risks, with valve surgery posing higher risks than coronary revascularization.
Area of Science:
- Cardiology
- Gastroenterology
- Surgical Complications
Background:
- Open-heart surgery, utilizing cardiopulmonary bypass (CPB), carries risks of postoperative complications.
- Abdominal complications, though infrequent, can significantly impact patient outcomes and mortality.
Purpose of the Study:
- To investigate the incidence, types, and mortality associated with abdominal complications following open-heart surgery.
- To identify risk factors and predisposing conditions for these complications, specifically gastrointestinal bleeding.
Main Methods:
- Retrospective analysis of 1686 adult patients undergoing open-heart surgery between 1980 and 1984.
- Data collection focused on abdominal complications, their types, associated mortality, and potential contributing factors like CPB duration and reoperation.
Main Results:
- Abdominal complications occurred in 1.6% of patients, with a 36% mortality rate. Gastrointestinal bleeding was the most frequent complication (61%), carrying a 53% mortality.
- Prolonged CPB and low output syndrome were linked to multiple organ failure. Reoperation for cardiac issues predisposed patients to gastrointestinal bleeding.
- Valve surgery demonstrated significantly higher mortality and abdominal complication rates compared to coronary revascularization.
Conclusions:
- Abdominal complications, especially GI bleeding, represent a serious risk after open-heart surgery with CPB.
- Risk factors include prolonged CPB, low output syndrome, and reoperations. Valve surgery patients face elevated risks.
- Early identification and management of these complications are crucial for improving patient survival rates.
Abstract:
Open-heart surgery was performed on 1686 adult patients between 1980 and 1984, with a mortality rate due to abdominal complications of 0.6%. Every operation involved the use of cardiopulmonary bypass (CPB). Abdominal complications occurred in 1.6%, with an overall mortality rate of 36%. The most frequent complication was gastrointestinal (Gl) bleeding (61%). The mortality of the patients who bled from the Gl tract was 53%. Other complications encountered were gastroduodenal ulcer, colitis, ileus, subphrenic abscess and intraperitoneal bleeding. Prolonged CPB and low output syndrome preceded multiple organ failure, which occurred in 39% of those who had abdominal complications and in 59% of those who bled. Gl bleeding after CPB did not correlate with a previous history of gastric ulcer. Reoperation because of cardiac tamponade or excessive chest tube drainage was a factor predisposing to Gl bleeding. The mortality and abdominal complication rates were significantly higher in valve surgery than in coronary revascularization.