Patient characteristics.

PurposeExcision of intracranial meningioma has been associated with major intraoperative blood loss (IBL). The objective of the study was to identify factors affecting IBL during removal of meningioma.MethodsWe retrospectively studied medical records of 530 adult patients who underwent surgery for intracranial meningioma at Sichuan Provincial People’s Hospital between September 2018 and May 2022. We obtained the following data from each patient’s medical chart: age, sex, height, weight, comorbidities, blood pressure, history of smoking and alcohol, imaging examination findings, pathologic diagnosis, albumin, creatinine, calcium, magnesium, hemoglobin (Hb), hematocrit, platelet count, activated partial thromboplastin time, international normalized ratio, fibrinogen concentration and blood transfusion. Univariate and multivariate analyses were performed to identify risk factors for greater IBL during removal of intracranial meningioma.ResultsA total of 530 patients were included in our study. Univariate analysis revealed that sex (p = 0.004), two-dimensional (2D) tumor area (p p = 0.014), World Health Organization grade (p = 0.015), preoperative albumin level (p = 0.032), preoperative Hb level (p = 0.001) and preoperative platelet count (p = 0.004) were significantly associated with greater IBL. Multivariate analysis revealed that greater 2D tumor area (p p = 0.029) and higher preoperative platelet count (p = 0.03) were independent risk factors for greater IBL in resection of intracranial meningioma.ConclusionLarger tumor size, higher preoperative albumin concentration and higher preoperative platelet count were identified as independent risk factors for greater IBL in resection of intracranial meningioma.