title: Risk factors leading to midurethral sling revision: a multicenter case-control study.
abstract: OBJECTIVE
  To determine risk factors for sling revision after midurethral sling (MUS) placement.
  
  
  METHODS
  This multicenter case-control study included patients who underwent MUS placement and subsequent revision secondary to voiding dysfunction from January 1999-2007 from nine Urogynecology centers across the USA. Direct logistic regression analysis was used to determine which diagnostic variables predicted sling revision.
  
  
  RESULTS
  Of the patients, 197 met the study criteria. Patient demographics, urodynamic findings, and operative differences did not increase the risk for sling revision. Risk factors for sling revision did include: pre-existing voiding symptoms (OR 2.76, 95% CI 1.32-5.79; p = 0.004) retropubic sling type (OR = 2.28, 95% CI 1.08-4.78; p = 0.04) and concurrent surgery (OR = 4.88, 95% CI 2.16-11.05; p < 0.001)
  
  
  CONCLUSIONS
  This study determined that pre-existing obstructive voiding symptoms, retropubic sling type, and concurrent surgery at the time of sling placement are risk factors for sling revision.
authors.affiliation: The Institute for Female Pelvic Medicine & Reconstructive Surgery, Allentown, PA, USA. smolden@fphcenter.com
authors.forename: Stephanie
authors.initials: S
authors.lastname: Molden
authors.forename: Danielle
authors.initials: D
authors.lastname: Patterson
authors.forename: Megan
authors.initials: M
authors.lastname: Tarr
authors.forename: Tatiana
authors.initials: T
authors.lastname: Sanses
authors.forename: Jessica
authors.initials: J
authors.lastname: Bracken
authors.forename: Aimee
authors.initials: A
authors.lastname: Nguyen
authors.forename: Heide S
authors.initials: HS
authors.lastname: Harvie
authors.forename: Amanda
authors.initials: A
authors.lastname: White
authors.forename: Sarah A
authors.initials: SA
authors.lastname: Hammil
authors.forename: Miles
authors.initials: M
authors.lastname: Murphy
authors.forename: Rebecca G
authors.initials: RG
authors.lastname: Rogers
mesh_terms: D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008875:Middle Aged; D012086:Reoperation / Q000706:statistics & numerical data; D012189:Retrospective Studies; D012307:Risk Factors; D053825:Suburethral Slings / Q000009:adverse effects*; D014550:Urinary Incontinence, Stress / Q000601:surgery; D014555:Urination Disorders / Q000209:etiology* / Q000601:surgery*