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The importance of patient blood management is increasingly recognized in surgery patients. This study aimed to examine the effect of perioperative restrictive blood transfusion on 1-year mortality and blood transfusion rate in open abdominal surgery.
We retrospectively studied 452 consecutive patients who underwent open abdominal surgery before (liberal group: 233 patients) and after (restrictive group: 219 patients) implementing intraoperative restrictive transfusion of red blood cell. The trigger levels of hemoglobin were less than 9–10 g/dL in the liberal group and less than 7–8 g/dL in the restrictive group. All-cause mortality at 1-year as the primary outcome and the transfusion rate of any allogeneic blood products as secondary outcome were compared between the liberal group and the restrictive group by the propensity-score matching.
Among a total of 452 patients (69 ± 11 yr., 70.5% men), overall mortality at 1 year was 8.4% and the proportion of patients who received any allogeneic blood products was 19.6%. Compared with 155 propensity-score matched patients of the liberal group, 155 matched patients of the restrictive group had significantly lower 1-year mortality (4 [2.5%] versus 18 [11.6%], p=0.003, percent absolute risk reduction [%ARR]; 9.0, 95% confidential interval [CI], 3.1–14.7) and had significantly lower proportion of patients who received any allogeneic blood products (21 [13.5%] versus 41 [26.4%], p=0.006, %ARR; 12.9, 95% CI, 3.9–21.5).
The results of this study indicate that intraoperative restrictive blood transfusion reduces 1-year mortality and the transfusion rate of allogeneic blood products.Le texte complet de cet article est disponible en PDF.
Abbreviations : ARR, FFP, PC, RBC
Keywords : Blood transfusion, Red blood cell, Restrictive, Mortality, Open abdominal surgery