Excessive bleeding and transfusion in a prior cardiac surgery is associated with excessive bleeding and transfusion...

Area of Science:

• Cardiovascular Surgery
• Hematology
• Genetics

Background:

• Excessive bleeding is a significant complication in cardiac surgery.
• A genetic predisposition may underlie recurrent excessive blood loss in patients undergoing multiple cardiac procedures.

Purpose of the Study:

• To investigate the association between excessive bleeding in a first and second cardiac surgery.
• To determine if a history of excessive blood loss predicts future bleeding events in cardiac surgery patients.

Main Methods:

• Retrospective analysis of 174 patients undergoing two cardiac surgeries with cardiopulmonary bypass.
• Excessive bleeding defined as chest tube drainage (CTD) ≥ 750 mL in 24 hours or transfusion of non-red blood cell products.
• Logistic regression analysis to assess the association between bleeding in the first and second surgeries, adjusting for covariates.

Main Results:

• Patients with CTD ≥ 750 mL in the first surgery had an adjusted odds ratio of 2.42 (P=0.03) for CTD ≥ 750 mL in the second surgery.
• Patients transfused with non-red blood cell products in the first surgery had an adjusted odds ratio of 2.55 (P=0.02) for similar transfusion requirements in the second surgery.
• A history of excessive bleeding in the first cardiac surgery was associated with a >2-fold increased risk of excessive bleeding in the second surgery.

Conclusions:

• Excessive bleeding during a first cardiac surgery is a significant predictor of excessive bleeding during a subsequent cardiac surgery.
• The findings support the hypothesis of a potential genetic predisposition influencing blood loss in patients undergoing repeat cardiac procedures.
• This association highlights the importance of considering a patient's bleeding history in managing subsequent cardiac surgeries.