
Therapies administered via vascular access catheters are a mainstay of both acute and chronic medical treatment. In fact when all types of vascular catheters are combined, the category may well represent the largest type of invasive device used in healthcare. However their ubiquitous presence, ironically, makes it very difficult to measure with any degree of statistical precision their associated device utilization rates. The use of peripheral catheters (PIVs), for example, is so widespread in the United States that their use is obscured among other procedure codes, rather being coded separately, and recorded uniquely only in individual patient records. Aggregate data is absent in any administrative datasets. In general the frequency of catheter use must be inferred from the number of units sold by their various manufacturers. Today, this number reportedly exceeds 300 million but is at best an estimate.









