title: Comparison of urodynamic findings in women with anatomical versus functional bladder outlet obstruction.
abstract: OBJECTIVE
  To characterize the symptoms and urodynamic findings of anatomical bladder outlet obstruction (AO) and functional bladder outlet obstruction (FO) in women and to determine if future endeavors at defining bladder outlet obstruction in women can group these entities together.
  
  
  METHODS
  Retrospective review of all videourodynamic studies was performed on women from March 2003 to July 2009. Women with diagnosis of obstruction were categorized based on the cause of obstruction into 2 groups: AO and FO. Demographic data, symptoms, and urodynamic findings were compared between the 2 groups.
  
  
  RESULTS
  One hundred fifty-seven women were identified of which 86 (54.8%) were classified as having AO and 71 (45.2%) were classified as having FO. There were no differences in symptoms between the 2 groups. There was no difference (P=0.5789) in the mean detrusor pressure at maximum flow rate Qmax between AO (38.9 cm H20) and FO (41.0 cm H20). There was a difference in the Qmax between AO and FO (10.6 [0-41.7] and 7.4 [0-35.7] mL/s, respectively; P=0.0044), but there was considerable overlap between the values in these 2 groups.
  
  
  CONCLUSIONS
  Anatomical bladder outlet obstruction and FO have similar urodynamic voiding pressure findings, but Qmax was statistically significantly lower in AO. However, there is a large overlap in the Qmax values between the 2 groups. Therefore, future studies that attempt to characterize bladder outlet obstruction in women need not exclude either group.
authors: Department of Urology, New York University Langone Medical Center, New York, NY, USA. benjamin.brucker@nyumc.org
authors: Benjamin M
authors: BM
authors: Brucker
authors: Sagar
authors: S
authors: Shah
authors: Sarah
authors: S
authors: Mitchell
authors: Eva
authors: E
authors: Fong
authors: Matthew D
authors: MD
authors: Nitti
authors: Christopher E
authors: CE
authors: Kelly
authors: Nirit
authors: N
authors: Rosenblum
authors: Victor W
authors: VW
authors: Nitti
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008875:Middle Aged; D001748:Urinary Bladder Neck Obstruction / Q000209:etiology / Q000503:physiopathology*; D014563:Urodynamics