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In anemia, traumatic brain injury, moderate or severe The Use of
a restrictive strategy: transfusions initiated at Hgb ≤7 g/dL
As Treatment, Acute
Is worse Than
a liberal strategy: transfusions initiated at a hemoglobin level of ≤10 g/dL
To reduce unfavorable outcomes: 74% restrictive VS 68% liberal. Mortality was not different. Acute respiratory distress syndrome was more frequent with a liberal strategy: 3% VS 1%
N Engl J Med. 2024 Jun 13. doi: 10.1056/NEJMoa2404360. Epub ahead of print [Citation]
Liberal or Restrictive Transfusion Strategy in Patients with Traumatic Brain Injury
HEMOTION Trial Investigators; Turgeon AF, Fergusson DA, Clayton L, Patton MP, Neveu X, Walsh TS, Docherty A, Malbouisson LM, Pili-Floury S, English SW, Zarychanski R, Moore L, Bonaventure PL, Laroche V, Verret M, Scales DC, Adhikari NKJ, Greenbaum J, Kramer A, Rey VG, Ball I, Khwaja K, Wise M, Harvey D, Lamontagne F, Chabanne R, Algird A, Krueper S, Pottecher J, Zeiler F, Rhodes J, Rigamonti A, Burns KEA, Marshall J, Griesdale DE, Sisconetto LS, Kutsogiannis DJ, Roger C, Green R, Boyd JG, Wright J, Charbonney E, Nair P, Astles T, Sy E, Hébert PC, Chassé M, Gomez A, Ramsay T, Taljaard M, Fox-Robichaud A, Tinmouth A, St-Onge M, Costerousse O, Lauzier F
Department of Anesthesiology and Critical Care Medicine, Division of Critical Care Medicine, Faculty of Medicine, Université Laval, Centre Hospitalier Universitaire de Québec-Université Laval Research Center, Quebec city, Canada
Randomized Controlled Trial, Multicenter Study

Background: The effect of a liberal transfusion strategy as compared with a restrictive strategy on outcomes in critically ill patients with traumatic brain injury is unclear.

Methods: We randomly assigned adults with moderate or severe traumatic brain injury and anemia to receive transfusion of red cells according to a liberal strategy (transfusions initiated at a hemoglobin level of ≤10 g per deciliter) or a restrictive strategy (transfusions initiated at ≤7 g per deciliter). The primary outcome was an unfavorable outcome as assessed by the score on the Glasgow Outcome Scale-Extended at 6 months, which we categorized with the use of a sliding dichotomy that was based on the prognosis of each patient at baseline. Secondary outcomes included mortality, functional independence, quality of life, and depression at 6 months.

Results: A total of 742 patients underwent randomization, with 371 assigned to each group. The analysis of the primary outcome included 722 patients. The median hemoglobin level in the intensive care unit was 10.8 g per deciliter in the group assigned to the liberal strategy and 8.8 g per deciliter in the group assigned to the restrictive strategy. An unfavorable outcome occurred in 249 of 364 patients (68.4%) in the liberal-strategy group and in 263 of 358 (73.5%) in the restrictive-strategy group (adjusted absolute difference, restrictive strategy vs. liberal strategy, 5.4 percentage points; 95% confidence interval, -2.9 to 13.7). Among survivors, a liberal strategy was associated with higher scores on some but not all the scales assessing functional independence and quality of life. No association was observed between the transfusion strategy and mortality or depression. Venous thromboembolic events occurred in 8.4% of the patients in each group, and acute respiratory distress syndrome occurred in 3.3% and 0.8% of patients in the liberal-strategy and restrictive-strategy groups, respectively.

Conclusions: In critically ill patients with traumatic brain injury and anemia, a liberal transfusion strategy did not reduce the risk of an unfavorable neurologic outcome at 6 months.

Funded by the Canadian Institutes of Health Research and others; HEMOTION ClinicalTrials.gov number, NCT03260478.

Pubmed record:  PMID: 38869931
Notes: 0
Theme: Anemia (with or without acute bleeding): Restrictive versus Liberal red-cell transfusion strategy