Hemodynamics, fluids & transfusion

Red Blood Cell Transfusion in the Intensive Care Unit

JAMAPublished Prospective cohort study

An erratum to this article was published (JAMA, 6 Aug 2024 ↗)

Authors' conclusion

RBC transfusion was common in patients admitted to ICUs worldwide between 2019 and 2022, with high variability across centers in transfusion practices.

Study context

Population
Adult intensive care unit (ICU) patients, 233 ICUs in 30 countries on 6 continents, March 2019 to October 2022
Participants
3,643 patients · 233 ICUs
Outcome
Occurrence of RBC transfusion during ICU stay
Methodological detailsinternational, multicentre, data collection in prespecified weeks
  • International
  • Multicentre
  • Data collection in prespecified weeks

Main finding

As reported in the abstract

RBC transfusion during ICU stay
Patients receiving ≥1 red blood cell (RBC) transfusion
894 (25%)
Units per transfused patient, median (IQR)
2 (1-4)
Proportion transfused across centers
0% to 100%
Proportion transfused across countries
0% to 80%
Proportion transfused across continents
19% to 45%

Observational data: associations, not effects.

Further findings

Clinical indications for RBC transfusion (1727 transfusions)

Low hemoglobin (Hb)
1412 [81.8%]
Lowest Hb before transfusion, mean (SD), g/dL
7.4 [1.2]
Active bleeding
479; 27.7%
Hemodynamic instability
406 [23.5%]

Stated physiological triggers

Hypotension
728 [42.2%]
Tachycardia
474 [27.4%]
Increased lactate
308 [17.8%]

Median lowest Hb on days with RBC transfusion

Range across centers
5.2 g/dL to 13.1 g/dL
Range across countries
5.3 g/dL to 9.1 g/dL
Range across continents
7.2 g/dL to 8.7 g/dL
ICUs transfusing at median Hb >7 g/dL
≈84%

Original publication

Red Blood Cell Transfusion in the Intensive Care Unit. JAMA. Published 21 November 2023. doi:10.1001/jama.2023.20737

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