The Incidence of Central Line-Associated Bacteremia After the Introduction of Midline Catheters in a Ventilator Unit Population.

HYPOTHESIS

Our objective was to evaluate whether the use of midline venous catheters in place of central line venous catheters, when appropriate, decreased the overall incidence of central line-associated bacteremia in a ventilator unit.

METHODS

The time interval between February 2012 and February 2013 was divided into 2 periods. Group A was the first half of the year, before the introduction of midline catheters, and group B was the second half of the year, 6 months after their introduction. Central line-associated bloodstream infection (CLABSI) was calculated using the equation: (total number of CLABSI/total number of catheter days) × 1000. The test was used for proportions between independent groups to compare the significance in the difference in CLABSI between groups A and B.

RESULTS

There was a significant decrease in the total number of catheter days on the ventilator unit in group A from 2408 catheter days in 1 year (August 1, 2011, to July 31, 2012) before the introduction of midline catheters to 1521 catheter days in group B in the following year (November 1, 2012, to October 31, 2013; < 0.05 for both groups).

CONCLUSIONS

Midline catheters in place of central lines decrease the rate of CLABSI in a ventilator unit. In addition, no bloodstream infections were associated with midline catheters.