title: Evidence of a functional effect of transient transurethral catheterization on micturition in women.
abstract: OBJECTIVE
  The objective of this study is to evaluate the effect of transient catheterization on uroflow parameters.
  
  
  METHODS
  Consenting women (ages 18-90) provided an uninstrumented uroflow pre- and post-indicated in urodynamic procedures. Voided volume, Qmax, and Qave were recorded for both uninstrumented uroflows. Uroflow curves were classified as "normal" or "abnormal." Pre- and post-urodynamic uroflow data were compared.
  
  
  RESULTS
  Thirty-five patients were included in the study. There was a statistically significant decrease in Qave from the pre- to the post-urodynamic uroflows from 14.71 to 10.55 ml/s (p = 0.012). Additionally, 28.6% of uroflow tracing patterns changed from "normal" to "abnormal," whereas only one (2.9%) changed from "abnormal" to "normal" (p = 0.031).
  
  
  CONCLUSIONS
  This study showed a degradative effect of transient catheterization on uroflow parameters, suggesting that catheterization may cause more than simply a passive obstructive effect. Urethral stimulation due to catheterization may perturb detrusor urethral function, altering voiding and possibly filling performance.
authors.affiliation: Division of Urology, University of Connecticut Health Center, 263 Farmington Ave, Farmington, CT 06030, USA. suskina@gmail.com
authors.forename: Anne M
authors.initials: AM
authors.lastname: Suskind
authors.forename: Phillip P
authors.initials: PP
authors.lastname: Smith
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008875:Middle Aged; D011446:Prospective Studies; D018709:Statistics, Nonparametric; D014521:Urethra / Q000503:physiopathology*; D014546:Urinary Catheterization / Q000009:adverse effects*; D016055:Urinary Retention / Q000209:etiology; D014554:Urination / Q000502:physiology*; D014563:Urodynamics; D055815:Young Adult