title: Differences in urodynamic voiding variables recorded by conventional cystometry and ambulatory monitoring in symptomatic women.
abstract: OBJECTIVE
  To determine whether there are differences in pressure and flow measurements between conventional cystometry (CONV) and ambulatory urodynamic monitoring (AMB) in women with overactive bladder syndrome and urinary incontinence.
  
  
  METHODS
  Retrospective study which included female subjects who underwent both CONV (with saline filling medium) and AMB, separated by less than 24 months, not using medication active on the lower urinary tract and without history of prior pelvic surgery. Both tests were carried out in compliance with the International Continence Society standards. The paired Student's t test was used to compare continuous variables. Bland-Altman statistics were used to assess the agreement of each variable between both studies.
  
  
  RESULTS
  Thirty women with a median (range) age of 50 (14 - 73) years met the inclusion criteria. AMB was carried out at a mean (SD) of 11 (6) months after CONV. Measurements of pves and pabd at the end of filling, and Qmax were significantly higher from AMB recordings. There were no differences in pdet at the end of filling, pdetQmax or pdetmax during voiding, nor significant difference in Vvoid.
  
  
  CONCLUSIONS
  We provide previously undocumented comparative voiding data between CONV and AMB for patients who most commonly require both investigations. Our findings show higher values of Qmax but similar values of pdetQmax measured by AMB which may partly reflect an overall lower catheter caliber, physiological filling but perhaps also more 'normal' voiding conditions.
authors.affiliation: Servicio de Urología, Hospital Clínico Universidad de Chile. Santiago, Chile.
authors.forename: Juan Pablo
authors.initials: JP
authors.lastname: Valdevenito
authors.affiliation: Urology Department, Newcastle upon Tyne Hospitals NHS Foundation Trust, Freeman Hospital. Newcastle upon Tyne, United Kingdom.
authors.forename: Ann
authors.initials: A
authors.lastname: Leonard
authors.affiliation: Regional Medical Physics Department, Newcastle upon Tyne Hospitals NHS Foundation Trust, Freeman Hospital, Newcastle upon Tyne, United Kingdom.
authors.forename: Clive J
authors.initials: CJ
authors.lastname: Griffiths
authors.affiliation: Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom.
authors.forename: Robert
authors.initials: R
authors.lastname: Pickard
authors.affiliation: AUrology Department, Newcastle upon Tyne Hospitals NHS Foundation Trust, Freeman Hospital. Newcastle upon Tyne, United Kingdom.
authors.forename: Christopher
authors.initials: C
authors.lastname: Harding
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008875:Middle Aged; D018670:Monitoring, Ambulatory; D011312:Pressure; D012016:Reference Values; D012189:Retrospective Studies; D001743:Urinary Bladder / Q000503:physiopathology*; D053201:Urinary Bladder, Overactive / Q000503:physiopathology*; D014549:Urinary Incontinence / Q000503:physiopathology*; D014554:Urination / Q000502:physiology*; D014563:Urodynamics / Q000502:physiology*; D055815:Young Adult