title: Risk factors associated with failed sonographically guided saline hydrostatic intussusception reduction in children.
abstract: OBJECTIVE
  The aim of this study was to explore the risk factors associated with failed sonographically guided saline hydrostatic intussusception reduction in children.
  
  
  METHODS
  We retrospectively reviewed the medical records and sonograms of 288 cases of intussusception over a 3-year period. Logistic regression was used for the analysis of the clinical data (sex, age, duration of symptoms, and presence or absence of emesis or bloody stool) and sonographic features (initial location and intussusception length, presence or absence of free peritoneal fluid, and trapped fluid in the intussusception).
  
  
  RESULTS
  The sex, age, and duration of symptoms showed no significant impact on the hydrostatic reducibility. The success rate became significantly lower for the intussusception cases with the presence of bloody stool, free peritoneal fluid, and trapped fluid in the intussusception (P < .05). The success rate was also lower when the intussusceptions were located in the left side of the abdomen (P < .05). For the above risk factors, the odds ratios from multivariate logistic regression analysis were 174.68 for initial intussusception location in the descending colon/rectum, 36.06 for the presence of peritoneal fluid, 13.22 for trapped fluid in the intussusception, and 9.27 for the presence of bloody stool.
  
  
  CONCLUSIONS
  An initial intussusception location in the descending colon/rectum, the presence of peritoneal fluid, trapped fluid in the intussusception, and bloody stool are the most important risk factors for failure of sonographically guided saline hydrostatic intussusception reduction.
authors.affiliation: Department of Ultrasound, Anhui Provincial Hospital of Anhui Medical University, Hefei, China. henianan71@qq.com.
authors.forename: Nianan
authors.initials: N
authors.lastname: He
authors.affiliation: Department of Ultrasound, Anhui Provincial Hospital of Anhui Medical University, Hefei, China.
authors.forename: Shenglong
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Department of Ultrasound, Anhui Provincial Hospital of Anhui Medical University, Hefei, China.
authors.forename: Xianjun
authors.initials: X
authors.lastname: Ye
authors.affiliation: Department of Ultrasound, Anhui Provincial Hospital of Anhui Medical University, Hefei, China.
authors.forename: Xiaoqian
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Department of Ultrasound, Anhui Provincial Hospital of Anhui Medical University, Hefei, China.
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Zhao
authors.affiliation: Department of Ultrasound, Anhui Provincial Hospital of Anhui Medical University, Hefei, China.
authors.forename: Xiufang
authors.initials: X
authors.lastname: Sui
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007422:Intestines / Q000000981:diagnostic imaging; D007443:Intussusception / Q000000981:diagnostic imaging* / Q000628:therapy*; D008297:Male; D012189:Retrospective Studies; D012307:Risk Factors; D012965:Sodium Chloride / Q000627:therapeutic use*; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional
chemical_list: D012965:Sodium Chloride
keywords: hydrostatic reduction; intussusception; logistic model; pediatric ultrasound; saline enema; sonography