Abstract
Background - Red blood cell (RBC) transfusion in patients undergoing major elective cranial surgery is associated with increased postoperative morbidity and mortality. This study aims to identify the clinical outcome of transfused glioblastoma patients undergoing primary surgical tumor resection and identify risk factors for RBC transfusion.
Material and methods - Between 2009 and 2019, 406 patients underwent elective primary glioblastoma resection. For multivariate analysis to assess risk factors for RBC transfusion, logistic regression was conducted. The impact of RBC transfusion on overall survival was assessed using Kaplan-Meier analysis.
Results - In total, 36 (8.9%) patients received RBC transfusion. Preoperative anemia rate was significantly higher in transfused patients compared to patients without RBC transfusion (33.3 vs 6.5%; p<0.0001). Postoperative complications as well as hospital length of stay (LOS) (p<0.0001) were significantly increased in transfused patients compared to non-transfused patients. After multivariate analysis, risk factors for RBC transfusion were preoperative anemia (p<0.0001), intraoperative blood loss (p<0.0001), female gender (p=0.0056) and radiation (p=0.0064). Kaplan-Meier curves revealed that RBC transfusion and being elderly (age ≥75 years) were relevant for overall survival.
Discussion - RBC transfusion is associated with increased postoperative morbidity and mortality in patients undergoing elective primary glioblastoma resection. Preoperative anemia and intraoperative blood loss are major risk factors for RBC transfusion. Preoperative anemia management and blood conservation strategies are crucial in patients undergoing elective primary glioblastoma resection.
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