Transfusion and blood stream infections after coronary surgery

Area of Science:

• Cardiovascular Surgery
• Infectious Diseases
• Transfusion Medicine

Background:

• Bloodstream infections (BSIs) are a significant concern following cardiac surgery.
• Coronary artery bypass grafting (CABG) is a common cardiac surgical procedure.
• The impact of perioperative blood transfusions on postoperative infections requires further elucidation.

Purpose of the Study:

• To investigate the association between blood transfusion and the incidence of BSIs in patients undergoing isolated CABG.
• To identify predictors of positive postoperative blood cultures.
• To evaluate the impact of positive blood cultures on long-term patient survival.

Main Methods:

• Retrospective analysis of 2764 patients undergoing isolated CABG.
• Review of blood culture data and infection outcomes.
• Statistical analysis to determine independent predictors and survival impact.

Main Results:

• Blood transfusion prior to blood culture draw was associated with a higher likelihood of positive blood cultures (OR 3.75).
• Deep sternal wound infection/mediastinitis was also an independent predictor of positive blood cultures (OR 7.43).
• Positive blood cultures significantly increased the risk of 5-year mortality (AHR 2.10).

Conclusions:

• Exposure to blood products may elevate the risk of BSIs post-cardiac surgery.
• Positive blood cultures following CABG are indicative of poorer long-term survival.
• Prospective studies are warranted to validate these findings.