title: [The influence of viscosity of synthetic urine on the flow rate through catheters].
abstract: BACKGROUND
  There are special requirements for draining a pouch, e.g. length, flexibility and ability to drain highly viscous urine.
  
  
  METHODS
  We checked in vitro the flow time of pure and synthetic urine thickened with hydroxyethylcellulose (0.125% and 0.250%, HEC) on selected catheters.
  
  
  RESULTS
  We found for SpeediCath Compact Male (SCCM) as a CH12 catheter the shortest flow times for undiluted and urine thickened with 0.125% and for SafetyCath Plus for urine thickened with 0.250%. For catheters with CH14 we found significantly shorter flow times for all tested solutions. The flow time does not depend on amount and area of the catheter eyes; we found no difference in the flow time for 4-eye (MobiStom) and 2-eye catheters.
authors.affiliation: Coloplast GmbH, Hamburg, Kuehnstraße 75, 22045 Hamburg, Deutschland. dedbr@coloplast.com
authors.forename: H
authors.initials: H
authors.lastname: Braunwarth
authors.forename: F H H
authors.initials: FH
authors.lastname: Brill
authors.forename: D
authors.initials: D
authors.lastname: Hegeholz
authors.forename: P
authors.initials: P
authors.lastname: Hammerer
mesh_terms: D001696:Biomechanical Phenomena; D002482:Cellulose / Q000031:analogs & derivatives; D004867:Equipment Design; D006801:Humans; D066298:In Vitro Techniques; D013997:Time Factors; D014546:Urinary Catheterization / Q000295:instrumentation*; D014556:Urine / Q000737:chemistry* / Q000502:physiology*; D014563:Urodynamics / Q000502:physiology*; D014783:Viscosity
chemical_list: D002482:Cellulose; C002283:hydroxyethylcellulose