Central venous line dressings: can you stick it?

AimThe objective of this study is to investigate which central venous catheter dressing is most secure.BackgroundCentral venous catheter insertion is a common procedure. A secure dressing is essential to prevent early line displacement. Many different dressings are used, but there is no consensus in choosing an optimal dressing.MethodsA sandwich, loop-line, or bridge technique was used to apply each of the dressings. Two mechanisms of displacement were tested: dressing adherence to skin and dressing adherence to line. Dressing to skin adherence was tested on a relatively hairless part of the upper arm. Weights were added sequentially until the dressing peeled off. Dressing to line adherence was tested by applying the dressing to a 7F Dual Lumen Bard Hickman line passing through a piece of foam (measuring 13 × 12 cm). Weights were attached to the line until the cuff was pulled through the foam.ResultsDressing to skin adherence was poorest for the clear dressings, followed by Mefix and Sleek, and greatest for a combination of Tegaderm and Mefix. Dressing to line adherence was improved using a sandwich technique instead of a loop-line technique and most secure when a bridge technique was used to the thicker shaft of the line.ConclusionsThe dressings used for securing Hickman lines are not all equally secure. The least effective is the IV 3000 loop-line dressing. Tegaderm-Mefix bridge and Tegaderm-Mefix-Sleek combination dressings are the most secure and cost effective.