title: [Resistance to flow of uncoated urinary catheters. Experimental study with bladder model].
abstract: OBJECTIVE
  Evaluate the flow resistance caused by uncoated urinary catheter put during night.
  
  
  METHODS
  Experimental synthetic bladder in vitro study measuring the flow of uncoated urinary catheter most frequently observed in the continuous nocturnal drainage with data charier and pressure (for catheters 10, 12 and 14 Ch diameter and 20, 40 and 60 cmH2O pressure). For each pressure/charier relationship, five catheters of the same type were used.
  
  
  RESULTS
  We observed that for the median flow (Qmax), two catheters with identical charier and pressure, which differed only by their brand, was not significantly different. For example, Peters(®) and Coloplast(®) Ch 14 probes and 20 cmH2O pressure (P value=0.915). Faced with the nomogram of Abrams-Griffiths (Lim and Abrams, 1995 [7]), uncoated catheters prove obstructive or partially obstructive at a higher pressure of 20 cmH2O for all those charier studied.
  
  
  CONCLUSIONS
  Uncoated urinary catheter put during the night is obstructive under some data charier. Increasing charier of uncoated catheter decreases resistance to flow. It seems that not difference in drainage flow between different brands with data charier and pressure.
authors.affiliation: Centre de rééducation et réadaptation fonctionnelle de KERPAPE, pôle médico-technique, BP 78, 56275 Ploemeur cedex, France. Electronic address: cor_t_56@hotmail.fr.
authors.forename: F
authors.initials: F
authors.lastname: Le Lijour
authors.affiliation: Centre de rééducation et réadaptation fonctionnelle de KERPAPE, pôle médico-technique, BP 78, 56275 Ploemeur cedex, France.
authors.forename: J
authors.initials: J
authors.lastname: Kerdraon
mesh_terms: D004867:Equipment Design; D008953:Models, Anatomic; D012212:Rheology; D001743:Urinary Bladder; D062885:Urinary Catheters
keywords: Cathéters urinaires; Cathétérisme intermittent; Flow; Intermittent self-catheterization; Obstruction des voies urinaires; Resistance; Résistance; Uncoated urinary catheters; Urinary tract obstruction; Écoulement