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Updated: Aug 23, 2026

Catheterization of the Carotid Artery and Jugular Vein to Perform Hemodynamic Measures, Infusions and Blood Sampling in a Conscious Rat Model
Published on: January 30, 2015
Relevance of type of catheters for central venous pressure measurement
Samuel Santelices1, Kevin J Sullivan, Niranjan Kissoon
1University of Florida, Health Science Center, Jacksonville, FL, USA.
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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