title: Contemporary national surgical outcomes in the treatment of ureteropelvic junction obstruction.
abstract: OBJECTIVE
  To evaluate contemporary national trends and outcomes of open pyeloplasty (OP) vs minimally invasive pyeloplasty (MIP) in the treatment of ureteropelvic junction obstruction using the National Surgical Quality Improvement Program database.
  
  
  METHODS
  Patients treated by OP or MIP between 2006 and 2011 were identified by The International Classification of Diseases, Ninth Revision, Clinical Modification codes corresponding to pyeloplasty as their primary operative procedure. Perioperative variables were analyzed using the chi-square and the Student t test. Multiple logistic regressions were used to identify morbidities and readmission risk factors.
  
  
  RESULTS
  Three hundred fifty-five patients were identified. Of them, 20.2% of cases were OP and 79.8% were MIP. There was a significant increase in MIP from 33% in 2006 to 83% in 2011 (P <.001). A total of 11.7% of patients in the MIP group underwent outpatient surgery (P = .002). Patients treated at a teaching hospital were over 3 times more likely to undergo MIP (odds ratio = 3.17; P = .001). There was significantly longer hospitalization in OP vs MIP (3.9 vs. 2.2 days; P = .001). OP was associated with significantly increased risk of reoperation or postoperative morbidity compared with MIP (11.1% vs. 4.2%; P = .02). Multivariate analysis confirmed a higher rate of overall morbidity in the OP cohort (P = .03). Male patients had significantly higher postoperative morbidity or reoperation rates (odds ratio = 4.38; P = .002). There was no significant difference in operative time between groups (P = .2).
  
  
  CONCLUSIONS
  Within the American College of Surgeons National Surgical Quality Improvement Program hospitals, MIP is associated with decreased reoperation and postoperative morbidity compared with OP.
authors.affiliation: Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL.
authors.forename: Daniel T
authors.initials: DT
authors.lastname: Oberlin
authors.affiliation: Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL.
authors.forename: Barry B
authors.initials: BB
authors.lastname: McGuire
authors.affiliation: Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL.
authors.forename: Matthew
authors.initials: M
authors.lastname: Pilecki
authors.affiliation: Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL.
authors.forename: Aksharananda
authors.initials: A
authors.lastname: Rambachan
authors.affiliation: Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL.
authors.forename: John Y
authors.initials: JY
authors.lastname: Kim
authors.affiliation: Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL.
authors.forename: Kent T
authors.initials: KT
authors.lastname: Perry
authors.affiliation: Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL. Electronic address: RNadler@northwestern.edu.
authors.forename: Robert B
authors.initials: RB
authors.lastname: Nadler
mesh_terms: D005260:Female; D006801:Humans; D007682:Kidney Pelvis; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome; D014517:Ureteral Obstruction / Q000601:surgery*; D013520:Urologic Surgical Procedures / Q000379:methods / Q000639:trends