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Observational Study
. 2016 Feb;47(2):408-12.
doi: 10.1016/j.injury.2015.10.009. Epub 2015 Oct 22.

Impact of Length of Red Blood Cells Transfusion on Postoperative Delirium in Elderly Patients Undergoing Hip Fracture Surgery: A Cohort Study

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Observational Study

Impact of Length of Red Blood Cells Transfusion on Postoperative Delirium in Elderly Patients Undergoing Hip Fracture Surgery: A Cohort Study

Zhuang-Yun Zhang et al. Injury. .

Abstract

Purpose: The purpose of the present study was to test whether older red blood cells (RBCs) transfusion results in an increased risk of postoperative delirium (POD) and various in-hospital postoperative complications in elderly patients undergoing hip fracture surgery.

Materials and methods: Patients (≥65 years) who underwent hip fracture surgery were enrolled, 179 patients were divided into two groups according to the storage time of the RBCs. The shorter storage time of RBCs transfusion group comprised patients who received RBCs ≤14 days old and the longer storage time of RBCs transfusion group comprised patients who received RBCs >14 days old. The blood samples were collected before anaesthesia induction, 4 and 24 h after RBCs transfusion for the determination of proinflammatory mediators, malondialdehyde, and superoxide dismutase activity.

Results: There was no difference in the baseline characteristics, the incidence of POD, and the in-hospital postoperative complications between the shorter storage time of RBCs transfusion group and the longer storage time of RBCs transfusion groups (P>0.05). Compared with the shorter storage time of RBCs transfusion group, the longer storage time of RBCs transfusion caused significantly longer duration of POD (P<0.05). There were significantly increased plasma levels of IL-8 and malondialdehyde at 24 h and IL-1β at 4 h after RBCs transfusion in the POD group compared with the non-POD group (P<0.05).

Conclusion: Transfusion of the longer storage RBCs is not associated with a higher incidence of POD or in-hospital postoperative complications, but with longer duration of POD in elderly patients undergoing hip fracture surgery.

Keywords: Elderly; Hip fracture; Length of red blood cells; Postoperative delirium; RBCs transfusion.

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