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A comparison of the priming properties of two central venous catheters and one pulmonary artery catheter

The time taken to prime the individual lumina of two multilumen central venous catheters (Viggo‐Spectramed 14G 20 cm Hydrocath and Vialon 14G 20cm Deltacath) and one pulmonary artery catheter (Viggo‐Spectramed 110cm 7.5F Pentacath) at flows between 5 ml.h‐1 and 99ml.h‐1 is reported. The catheters supplied by different manufacturers but of identical length and gauge have significantly different priming times (p < 0.001). A protocol which may be used to prime the individual lumina of the three catheters studied is described. By means of an in vitro test the accuracy of this protocol is validated.