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  • Title: Relevance of type of catheters for central venous pressure measurement.
    Author: Santelices S, Sullivan KJ, Kissoon N, Duckworth LJ, Murphy SP.
    Journal: Pediatr Emerg Care; 2004 Jul; 20(7):448-52. PubMed ID: 15232245.
    Abstract:
    OBJECTIVE: To compare simultaneous central venous pressure measurements from rigid polyurethane and soft tunneled silicone elastomere catheters. HYPOTHESIS: There will be no significant difference in central venous pressure readings between polyurethane and silastic catheters. SETTING: Bone Marrow Transplant Unit in a tertiary care children's hospital. PATIENTS: 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. CONCLUSION: 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.
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