Hemodynamics, fluids & transfusion

Association Between Storage Time of Transfused Red Blood Cells and Infection After Clean-contaminated Surgery: A Retrospective Cohort Study

Ann SurgPublished Retrospective cohort study

Authors' conclusion

Prolonged storage time of transfused RBCs was not associated with increased risks of infections after clean-contaminated surgery.

Study context

Population
Adults undergoing clean-contaminated surgery 2014–2018 who received allogeneic RBC transfusion
Participants
4,046 adults · 11,604 transfusion episodes
Exposure
Longer vs shorter storage time of transfused red blood cells (RBCs)
Outcome
Infections developing after transfusion
Follow-up
Within POD 30
Methodological detailstransfusion episode-level and patient-level analyses, adjusted for 17 confounders
  • Transfusion episode-level and patient-level analyses
  • Adjusted for 17 confounders

Main finding

As reported in the abstract

Postoperative infection
Estimate (95% CI)
Storage time, episode-level
OR 1.03 per 5 days(0.95–1.11)
Mean storage time, patient-level
OR 1.02(0.95–1.10)
Weighted mean storage time, patient-level
OR 1.02(0.95–1.10)
Maximum storage time, patient-level
OR 1.06(0.98–1.14)
Scalar Age of Blood Index, patient-level
OR 0.99(0.96–1.03)

Per 5 days, as printed

Patients with postoperative infections
1025 (25.3%)

Observational data: associations, not effects.

Original publication

Association Between Storage Time of Transfused Red Blood Cells and Infection After Clean-contaminated Surgery: A Retrospective Cohort Study. Ann Surg. Published 20 November 2023. doi:10.1097/sla.0000000000006155

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