An infection preventionist is writing a policy about prevention of intravascular device infection.

The Certification Study Guide (6th edition) identifies the use of maximum sterile barrier (MSB) precautions during central line insertion as a cornerstone practice for preventing intravascular device–associated infections, including central line–associated bloodstream infections (CLABSIs). MSB precautions include wearing a cap, mask, sterile gown, and sterile gloves, and using a large sterile drape to fully cover the patient during line insertion. These measures significantly reduce the risk of introducing skin flora and environmental microorganisms into the bloodstream at the time of catheter placement.

The study guide emphasizes that the highest risk for contamination occurs during insertion, making strict aseptic technique essential. MSB precautions are a required element of evidence-based central line insertion bundles and are consistently associated with reduced CLABSI rates when reliably implemented.

The other options reflect outdated or incorrect practices. Routine scheduled replacement of central lines every seven days is not recommended and does not reduce infection risk. The femoral vein is not the preferred insertion site in adults due to higher infection risk compared to subclavian or internal jugular sites. While alcohol is used during hub disinfection, chlorhexidine-based antisepsis (preferably chlorhexidine with alcohol) is recommended for skin preparation—not alcohol alone.

This question highlights a core CIC exam concept: standardized insertion practices using maximum sterile barriers are among the most effective strategies for preventing intravascular device infections.