title: [Pelvic floor muscle contraction and maximum urethral closure pressure].
abstract: OBJECTIVE
  The aim of this study was to precise the relationship between the pelvic floor muscle (PFM) contraction and the maximum urethral closure pressure (MUCP) at rest and during a containing effort.
  
  
  METHODS
  Longitudinal study, observational, single-center retrospective performed in successively 358 women addressed for urodynamics. MUCP at rest and during a containing effort, gain of MUCP, functional urethral length (FUL), scores USP and ICQ-SF, cervico-urethral mobility (CUM) according to POP-Q classification and leak point pressure were analyzed according to the PFM contraction.
  
  
  RESULTS
  One hundred and seventy-three had genuine stress urinary incontinence, 25 urge urinary incontinence, 148 mixed incontinence and 12 had no urinary incontinence. PFM contraction was not associated with a hysterectomy, age, parity, BMI, CUM, FUL, MUCP at rest, the severity of the incontinence assessed by ICIQ-SF score and leak point pressure. There was a proportional relationship between PFM contraction and the value of MUCP measured during this contraction (P<0.0001) on the one hand, and the gain of MUCP (P<0.0001) on the other. MUCP at rest was independent from the MUCP during the containing effort and the gain of MUCP.
  
  
  CONCLUSIONS
  The strength of contraction of the PFM is not correlated with MUCP at rest but proportional to the augmentation of the MUCP during the containing effort.
authors.affiliation: Service de gynécologie-obstétrique, CHI Poissy-Saint-Germain-en-Laye, 78300 Poissy, France; Laboratoire privé d'explorations périnéales, 78300 Poissy, France. Electronic address: philippe.dompeyre@wanadoo.fr.
authors.forename: P
authors.initials: P
authors.lastname: Dompeyre
authors.affiliation: Inserm CIC802, service de gynécologie-obstétrique, université de Poitiers, CHU de Poitiers, 86000 Poitiers, France.
authors.forename: X
authors.initials: X
authors.lastname: Fritel
authors.affiliation: Service de gynécologie-obstétrique, CHI Poissy-Saint-Germain-en-Laye, 78300 Poissy, France.
authors.forename: A
authors.initials: A
authors.lastname: Fauconnier
authors.affiliation: Service de médecine physique et de réadaptation, UPMC, Paris 6, hôpital Rothschild, AP-HP, 75012 Paris, France.
authors.forename: G
authors.initials: G
authors.lastname: Robain
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008875:Middle Aged; D009119:Muscle Contraction; D017773:Pelvic Floor / Q000502:physiology*; D011312:Pressure; D012189:Retrospective Studies; D014521:Urethra / Q000502:physiology*; D014549:Urinary Incontinence / Q000503:physiopathology*
keywords: Female; Femme; Incontinence urinaire; MUCP; PCUM; Pelvic floor muscle; Plancher pelvien; Urinary incontinence; Urodynamics; Urodynamique