Background: Relationship between preoperative anemia (PA) and postoperative delirium (POD) is not still completely clear and totally proven for surcigally treated patients.This study tries to unveil that connection in patient surgically treated for colorectal cancer (CRC). Objective: The aim of this study is to examine relationship between PA and POD in patients surgically treated for CRC and improve preoperative preparation and recognition of critical risk groups of patients for POD. Methods: Out of 62 patient were analysed in prospective method. All patient have been operated for CRC in Surgical clinic of University clinical centre Tuzla from june until december of 2024. Patients were divided in 2 groups depending on presence of PA. Presence of PA is defined as blood hemoglobin concentration (HGB) lower than 130 g/L (
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