Abstract
A prospective study of intravascular catheters (arterial, Swan-Ganz, and central venous) in two hospitals with similar intensive care units revealed an overall 25 percent colonization rate (more than 15 colony counts). Arterial catheters had the lowest colonization rate and central venous catheters had the highest. Arterial, Swan-Ganz, and central venous catheters are possible sources of nosocomial infections and septicemia. They should be inserted only when necessary. A critical review of our data and the literature suggests that future studies should examine the potential benefits of assiduous insertion technique, improved dressing care, intravascular delivery systems, and the choice of catheter.
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