title: Relevance of type of catheters for central venous pressure measurement.
abstract: OBJECTIVE
  To compare simultaneous central venous pressure measurements from rigid polyurethane and soft tunneled silicone elastomere catheters.
  
  
  OBJECTIVE
  There will be no significant difference in central venous pressure readings between polyurethane and silastic catheters.
  
  
  METHODS
  Bone Marrow Transplant Unit in a tertiary care children's hospital.
  
  
  METHODS
  Five children undergoing bone marrow transplantation with preexisting polyurethane and silastic catheters.
  
  
  METHODS
  Simultaneous central venous pressure readings were obtained by 2 observers blinded to the other readings and to the type of catheter. Readings were done in triplicate (total of 690 readings). Each triplicate was averaged to 1 data point yielding 115 paired central venous pressure measurements.
  
  
  RESULTS
  No significant difference was demonstrated between polyurethane and silicone catheters (-1 +/- 3 cm H20). Using Bland and Altman method revealed no significant bias (mean = -1 cm H2O) and acceptable agreement between catheter types.
  
  
  CONCLUSIONS
  Silicone and polyurethane catheters yield similar values of central venous pressures. Permanently implanted silicone elastomere catheters can be used to measure central venous pressure in the emergency setting.
authors.affiliation: University of Florida, Health Science Center, Jacksonville, FL, USA.
authors.forename: Samuel
authors.initials: S
authors.lastname: Santelices
authors.forename: Kevin J
authors.initials: KJ
authors.lastname: Sullivan
authors.forename: Niranjan
authors.initials: N
authors.lastname: Kissoon
authors.forename: Laurie J
authors.initials: LJ
authors.lastname: Duckworth
authors.forename: Suzanne P
authors.initials: SP
authors.lastname: Murphy
mesh_terms: D000293:Adolescent; D001795:Blood Pressure Determination / Q000295:instrumentation*; D016026:Bone Marrow Transplantation; D002404:Catheterization; D002405:Catheterization, Central Venous / Q000295:instrumentation*; D002496:Central Venous Pressure; D002648:Child; D004867:Equipment Design; D006801:Humans; D007601:Jugular Veins; D011140:Polyurethanes; D015203:Reproducibility of Results; D012826:Silicone Elastomers; D013350:Subclavian Vein; D014683:Vena Cava, Superior
chemical_list: D011140:Polyurethanes; D012826:Silicone Elastomers