What is the role of a moisture barrier in draping?

• A. To resist fluid penetration and protect the sterile field.
• B. To speed up skin drying after prep.
• C. To measure patient body temperature.
• D. To replace gloves during case.

Answer: (A)

The moisture barrier in draping is a fluid-impervious layer that resists penetration by blood, irrigation fluids, and other liquids. This prevents liquids from seeping through the drape and contaminating the sterile field, helping keep the operative area dry, visible, and protected from contamination. It also reduces fluid wicking and pooling under the drape, supporting infection prevention and sterility throughout the procedure. It isn’t intended to dry skin, measure temperature, or replace gloves, which are separate functions outside the barrier role of the drape.