title: Application of controlled hypotension combined with autotransfusion in spinal orthomorphia.
abstract: BACKGROUND
  Idiopathic scoliosis is a common spinal deformity in teenagers, which is managed mainly by orthomorphia. However, due to great trauma, long operative duration and large blood loss, a great amount of blood transfusion is needed during the surgery. Allogeneic blood transfusion should be reduced in order to release blood insufficient, decline blood transfusion expense, as well as avoid transfusion diseases.
  
  
  OBJECTIVE
  The objective of the following study is to investigate the value of controlled hypotension combined with autotransfusion in idiopathic scoliosis orthomorphia and in order to reduce surgical bleeding and reduction in blood transfusion.
  
  
  METHODS
  Intra-operative controlled hypotension was performed during posterior orthomorphia surgery on all the 46 cases of idiopathic scoliosis, 17 cases in which were served as the control group, who underwent allogeneic blood transfusion without autotransfusion, whereas the other 29 cases were served as the experimental group, who underwent autotransfusion that including reinfusion of pre-operative deposited autologous blood and intra-operative salvaged autologous blood. The blood loss volume and transfusion status in two groups were observed.
  
  
  CONCLUSIONS
  Blood loss volume in the control group was 400-1000 (835.3 ± 167.5) mL and that in the experimental group was 350-1400 (812.1 ± 152.7) mL, there was no marked difference between the two groups (P > 0.05). The volume of allogeneic blood transfusion in the control group was 500-1800 (855.9 ± 321.1) mL, which was greater than that in the experimental group ((0-1300 (337.9 ± 258.3) mL) (P < 0.01). The results suggested that controlled hypotension reduces intraoperative bleeding and post-operative autotransfusion minimizes the need of allogeneic blood transfusion.
authors.affiliation: Department of Anesthesiology, Xiangyang Central Hospital, Hubei University of Arts and Science, Hubei Province, China.
authors.forename: Li-Wen
authors.initials: LW
authors.lastname: Zhou
authors.affiliation: Department of Anesthesiology, Xiangyang Central Hospital, Hubei University of Arts and Science, Hubei Province, China.
authors.forename: Ming-Qiang
authors.initials: MQ
authors.lastname: Li
authors.affiliation: Department of Anesthesiology, Xiangyang Central Hospital, Hubei University of Arts and Science, Hubei Province, China.
authors.forename: Xue-Song
authors.initials: XS
authors.lastname: Wang
authors.affiliation: Department of Anesthesiology, Xiangyang Central Hospital, Hubei University of Arts and Science, Hubei Province, China.
authors.forename: Youyang
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Department of Anesthesiology, Xiangyang Central Hospital, Hubei University of Arts and Science, Hubei Province, China.
authors.forename: Fan
authors.initials: F
authors.lastname: Ye
authors.affiliation: Department of Anesthesiology, Xiangyang Central Hospital, Hubei University of Arts and Science, Hubei Province, China.
authors.forename: Xihong
authors.initials: X
authors.lastname: Ye
keywords: Autotransfusion; controlled hypotension; idiopathic scoliosis