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The impact of blood transfusion on morbidity and mortality after cardiac surgery

Camila de Christo Dorneles1, Luiz Carlos Bodanese, João Carlos Vieira da Costa Guaragna

  • 1Department of Cardiology, Catholic University of Rio Grande do Sul (PUCRS) Medical School, Porto Alegre, Brazil. camilacdorneles@yahoo.com.br

Revista Brasileira De Cirurgia Cardiovascular : Orgao Oficial Da Sociedade Brasileira De Cirurgia Cardiovascular
|September 7, 2011
PubMed

Insights

Blood transfusion after cardiac surgery increases the risk of infections, atrial fibrillation, acute renal failure, and stroke. However, it did not significantly impact mortality rates in this study.

Area of Science:

  • Cardiovascular Surgery
  • Transfusion Medicine
  • Clinical Outcomes Research

Background:

  • Blood transfusion is a common practice in cardiac surgery.
  • The impact of perioperative blood transfusion on postoperative outcomes requires further investigation.

Purpose of the Study:

  • To analyze the association between blood transfusion and clinical outcomes following cardiac surgery.
  • To identify specific postoperative complications linked to blood transfusion in cardiac surgery patients.

Main Methods:

  • Retrospective cohort study of 4028 patients undergoing coronary artery bypass grafting or valve surgery.
  • Comparison of postoperative complications between transfused (n=916) and non-transfused (n=3112) patients.
  • Statistical analysis using univariate and multivariate logistic regression.

Main Results:

  • Transfused patients had higher rates of infectious episodes (mediastinitis, respiratory infection, sepsis), atrial fibrillation, acute renal failure, and stroke.
  • The length of hospital stay was significantly longer for patients receiving blood transfusions.
  • Mortality rates did not differ significantly between the transfused and non-transfused groups.

Conclusions:

  • Blood transfusion in cardiac surgery is associated with an increased risk of infectious complications, atrial fibrillation, acute renal failure, and stroke.
  • Transfusion is a significant risk factor for several adverse postoperative events.
  • While associated with increased morbidity and length of stay, blood transfusion did not significantly affect mortality in this cohort.
Abstract

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