Retrospective Analysis of Intraoperative Blood Loss during Surgery for Idiopathic Scoliosis
Objective. To perform quantitative assessment of intraoperative blood loss volume and severity during stages of idiopathic scoliosis surgical correction. Material and Methods. Data of intraoperative blood loss during stages of surgical correction of idiopathic scoliosis were analyzed in 1241 operated patients. Multi-stage surgical interventions were performed in 581 (46.8 %) patients, posterior fusion - in 660 (53.2 %), and multilevel corrective vertebrectomy - in 72 (12.4 %) patients. Two methods of general anesthesia were used: TIVA with propofol, fentanyl, tracrium, and with inhaled sevoflurane, fentanyl, and tracrium. Volumes of intraoperative blood loss were assessed at main stages of surgery. Results. Total intraoperative blood loss during multistage surgical treatment with segmental hook instrumentation was 967.4 ± 43.6 ml, and with hybrid instrumentation - 1135.9 ± 139.5 ml. Blood loss during posterior only fusion procedure was 865.5 ± 40.1 ml with segmental hook instrumentation, and 1049.9 ± 75.5 ml with hybrid instrumentation. Multilevel vertebrectomy was associated with maximum intraoperative blood loss of 1242.9 ± 121.8 ml. Conclusion. Intraoperative blood loss during surgical correction of idiopathic scoliosis varies considerably and averages from 20.0 to 40.0 % of the circulatory blood volume. The duration of surgical intervention is the main proved factor influencing the volume of blood loss.