Intensive Care Medicine

, Volume 37, Issue 1, pp 97–109

Postoperative red blood cell transfusion and morbid outcome in uncomplicated cardiac surgery patients

Authors

    • Department of AnesthesiologyLudwig-Maximilians-Universität München
    • Multicenter Study of Perioperative Ischemia (McSPI) Research Group
  • Stephanie A. Snyder-Ramos
    • Department of AnesthesiologyUniversity of Heidelberg
    • Multicenter Study of Perioperative Ischemia (McSPI) Research Group
  • Yinghui Miao
    • Ischemia Research and Education Foundation
  • Alexander Kulier
    • Department of Anesthesiology and Intensive Care MedicineUniversity of Graz
    • Multicenter Study of Perioperative Ischemia (McSPI) Research Group
  • Bernd W. Böttiger
    • Department of Anesthesiology and Postoperative Intensive Care MedicineUniversity of Cologne
    • Multicenter Study of Perioperative Ischemia (McSPI) Research Group
  • Jack Levin
    • Department of Laboratory MedicineUniversity of California School of Medicine
    • Multicenter Study of Perioperative Ischemia (McSPI) Research Group
  • Dennis T. Mangano
    • Ischemia Research and Education Foundation
Original

DOI: 10.1007/s00134-010-2017-z

Cite this article as:
Möhnle, P., Snyder-Ramos, S.A., Miao, Y. et al. Intensive Care Med (2011) 37: 97. doi:10.1007/s00134-010-2017-z

Abstract

Objective

To evaluate postoperative red blood cell (RBC) transfusion and its association with postoperative cardiac events and multiorgan morbidity in uncomplicated cardiac surgery patients.

Methods

A cohort of 945 patients from the 5,436 coronary artery bypass grafting patients enrolled in the international Multicenter Study of Perioperative Ischemia (McSPI) Epidemiology II (EPI II) study was investigated. Inclusion criteria were low to moderate risk profile, postoperative hemoglobin level ≥10 g/dl, minimal postoperative blood loss, and no evidence of any morbid event on the day of surgery. RBC transfusion was assessed during the first 24 postoperative hours and cardiac as well as multiorgan outcomes from postoperative day 2 to hospital discharge. Multivariate analysis was applied to assess the effect of RBC transfusion on multiorgan outcomes. A secondary propensity score analysis was performed in 4,465 patients without early postoperative morbid outcomes.

Results

Transfused patients (193/945, 20.4%) were more likely to suffer cardiac events (P = 0.03), harvest-site infection (P = 0.002), and composite morbidity outcome (P = 0.04). RBC transfusion was associated with cardiac events on multivariate as well as on propensity score analysis (adjusted odds ratio, 1.39; 95% confidence interval, 1.01–1.92; P = 0.04), and with harvest-site infection on multivariate analysis. Additionally, propensity score analysis suggested possible associations of RBC transfusion with increased risks for composite morbidity outcome and in-hospital mortality, renal morbidity, pneumonia, and mediastinitis.

Conclusions

The data suggest a potential association between postoperative RBC transfusion and increased morbidity for cardiac surgery patients with low to moderate mortality risk profiles, adequate hemoglobin levels, and low bleeding rates.

Keywords

RBC transfusionCardiac surgeryCardiac morbidityInfection morbidity

Supplementary material

134_2010_2017_MOESM1_ESM.doc (91 kb)
Supplementary material 1 (DOC 91 kb)

Copyright information

© Copyright jointly held by Springer and ESICM 2010