Switzer T, Naraine N, Chamlati R, et al. - Via performing a retrospective analysis of patients who underwent posterior spinal fusion surgery and received preoperative iron supplementation, researchers here investigated the correlation between preoperative hemoglobin and red blood cell transfusion after the implementation of the preoperative iron supplementation protocol. They assessed a total of 382 patients treated with preoperative oral iron; intraoperative transfusion was required in 175 of these (45.5%) patients. Observations revealed correlation of higher preoperative hemoglobin levels (> 130 g/L) with a reduced requirement for red blood cell transfusion in pediatric patients who have received iron supplementation before undergoing posterior spinal fusion.