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[Risk factors for excessive bleeding in patients undergoing open heart surgery with cardiopulmonary bypass]
Cong-yu Shen1, Jin-ning Zhao, Tai-di Zhong
1Department of Anesthesiology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University Institute of Clinical Medicine, Hangzhou 310016, China.
Insights
Older age, prior sternotomy, low hematocrit, and longer cardiopulmonary bypass (CPB) duration increase bleeding risk in open heart surgery patients. Identifying these factors aids in managing excessive bleeding during cardiac procedures.
Area of Science:
- Cardiovascular Surgery
- Anesthesiology
- Hematology
Context:
- Open heart surgery with cardiopulmonary bypass (CPB) carries a risk of excessive perioperative bleeding.
- Understanding predictors of bleeding is crucial for patient safety and resource management.
Purpose:
- To identify pre- and intraoperative risk factors for excessive bleeding in adult patients undergoing open heart surgery with CPB.
- To analyze the relationship between various patient and procedural characteristics and the occurrence of excessive bleeding.
Summary:
- A retrospective analysis of 1079 patients identified key risk factors for excessive bleeding.
- Significant predictors included age (≥ 65 years), previous sternotomy, preoperative hematocrit, CPB duration (≥ 120 minutes), and procedure complexity.
- Excessive bleeding occurred in 11.1% of patients.
Impact:
- Findings can inform clinical decision-making to mitigate bleeding risks.
- Improved risk stratification may lead to tailored anesthetic and surgical management strategies.
- Potential for reduced transfusion requirements and improved patient outcomes in cardiac surgery.
Objective:
To evaluate the pre- and intraoperative risk factors associated with excessive bleeding during the perioperative period in adult patients undergoing open heart surgery with cardiopulmonary bypass (CPB).
Methods:
A total of 1079 consecutive patients undergoing open heart surgery with CPB from January 2001 to May 2010 were included (except for emergency operation). The possible risk factors associated with excessive bleeding were retrospectively analyzed. Patients who received ≥ 7 units of RBC or had a re-operation during which no active bleeding point was found within one day of operation were classified as excessive bleeding. According to the occurrence of excessive bleeding, they were divided into 2 groups: excessive and non-excessive bleeding groups. The possible risk factors associated with excessive bleeding were retrospectively analyzed. Univariate analysis and multivariate Logistic regression analysis were used to examine the relationship between these factors and excessive bleeding.
Results:
Among them, 120 (11.1%) developed excessive bleeding. Multivariate Logistic analysis indicated that the risk factors for excessive bleeding were age (OR = 4.533, 95%CI 2.624 - 7.831), previous sternotomy (OR = 2.781, 95%CI 1.410 - 5.486), preoperative hematocrit concentration (OR = 0.896, 95%CI 0.861 - 0.932), CPB duration (OR = 2.782, 95%CI 1.791 - 4.322) and type of procedure (OR = 2.292, 95%CI 1.376 - 3.817).
Conclusion:
Age ≥ 65 years, previous sternotomy, preoperative low hematocrit concentration, CPB duration ≥ 120 min and complex operation were the significant predictors for excessive bleeding in patient undergoing open heart surgery with CPB.
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