title: Factors contributing to prolonged hospitalization of patients with infantile hypertrophic pyloric stenosis.
abstract: BACKGROUND
  To study the influence of clinical audit on diagnosis, complications, and factors contributing to hospitalization of patients with infantile hypertrophic pyloric stenosis.
  
  
  METHODS
  Retrospective cohort study.
  
  
  METHODS
  There were 214 patients from 1991 to 2004 from three medical centers in Kaohsiung. Data were analyzed with respect to diagnostic methods, complications, and factors requiring patient hospitalization.
  
  
  RESULTS
  The ratio of male to female was 4.8:1 (177 males and 37 females). The diagnoses before admission were as follows: 22% had milk intolerance and 14.5% had esophageal reflux. There was a significant increase in the use of sonogram diagnostic test (p=0.005) and a decrease in the incidence of diagnosis by olive mass palpation but not by barium meal test. Surgery time of 48 hours after admission was significant with barium meal examination and related to longer hospital stay (p<0.001). Weight gain less than 800 g before admission (n=125) was related to longer hospital stay (p=0.026).
  
  
  CONCLUSIONS
  The diagnostic method was changed from olive mass palpation to sonogram. Weight gain less than 800 g before admission and surgery time of 48 hours after admission were related to longer hospital stay.
authors.affiliation: Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
authors.forename: Kuo-Shu
authors.initials: KS
authors.lastname: Tang
authors.forename: I-Fei
authors.initials: IF
authors.lastname: Huang
authors.forename: Hsiang-Hung
authors.initials: HH
authors.lastname: Shih
authors.forename: Ying-Hsien
authors.initials: YH
authors.lastname: Huang
authors.forename: Chi-Hung
authors.initials: CH
authors.lastname: Wu
authors.forename: Chung-Ching
authors.initials: CC
authors.lastname: Lu
authors.forename: Fu-Chen
authors.initials: FC
authors.lastname: Huang
authors.forename: Mao-Meng
authors.initials: MM
authors.lastname: Tiao
authors.forename: Chi-Di
authors.initials: CD
authors.lastname: Liang
mesh_terms: D015331:Cohort Studies; D005260:Female; D006801:Humans; D006984:Hypertrophy; D007223:Infant; D007231:Infant, Newborn; D007902:Length of Stay; D008297:Male; D011707:Pyloric Stenosis / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D012189:Retrospective Studies; D014463:Ultrasonography