Abstract PR586

Abstract

Background & Objectives: Intraoperative blood loss during scoliosis surgery often leads to blood transfusion1. Predictors of intraoperative blood loss and postoperative effects of intraoperative blood transfusion are extensively investigated2. Most of those studies do not assess postoperative transfusions. Our aim was to investigate the influence of intraoperative allogenic blood transfusion (ALBT) on postoperative blood transfusion rate and early postoperative outcomes. Materials & Methods: In this retrospective study we reviewed data of 202 patients who had scoliosis surgery between 2009-2014. We recorded preoperative hemoglobin levels, surgical times, postoperative first hemoglobin levels, duration of postoperative mechanical ventilation, ICU and PACU stay and postoperative hospital discharge times. Patients were grouped according to the ALBT usage. We first compared patients who received intraoperative transfusions (T+ group) and intraoperatively non transfused patients (T- group). Postoperative mechanical ventilation duration, ICU stay and hospital discharge times were compared between only intraoperatively transfused, only postoperatively transfused, both intra-and-postoperatively transfused, and not transfused patients. Results: Data of 138 women and 64 men were assessed. There were no significant deference between T+ group and T- group regarding the preoperative hemoglobin levels (p= 0.85). Mean operative times in T+ group (n=116) was 339±98 minutes; and 193±106 minutes in T- group (n=86) (p <0,001). Postoperative blood transfusion rates were significantly higher in patients in T+ group (p<0,001) although the postoperative hemoglobin levels were not significantly different (p=0.241). Sixty two % of T+ group patients and 20% of T- group patients received ALBT postoperatively. Although there were no significant difference between mechanical ventilation and ICU stay duration times, hospital discharge times of T+ group were significantly longer than T- group; 7 (min 3- max 22) and 5 (min 2- max16) days respectively (p< 0,001). Postoperative mechanical ventilation times were significantly less in the non-transfused patients compared to only intraoperative transfused patients (p= 0.006) and intra-and-postoperative transfused patients (p< 0,001). Hospital discharge times were also significantly less in the non-transfused group compared to intra-and-postoperative transfused group, (p<0.001). Conclusion: In conclusion, our results reveal that intraoperative blood transfusions have a negative affect on early postoperative results. We can say that the perioperative strategies to decrease blood loss and transfusion of allogenic blood products in scoliosis surgery will be beneficial for our patients.