A nurse is teaching a newly licensed nurse about wearing medical masks. Which of the following statements should the nurse include?

A. Touching the front of the mask while it is being worn is a violation of aseptic technique because the outer surface is considered contaminated. Pathogens trapped on the filter fibers can be transferred to the hands, increasing the risk of cross-contamination to other surfaces or the face. Proper protocol dictates that the mask should only be handled by the ear loops or ties during adjustment or removal. B. Discarding the mask after each use is essential to prevent the spread of microorganisms and ensure the integrity of the filtration material. Moisture from respirations can saturate the mask over time, significantly reducing its efficacy as a barrier against respiratory droplets. Single-use medical masks are designed for one clinical encounter or until they become soiled to maintain optimal infection control standards. C. According to standard doffing sequences, the mask should be removed after the gloves and gown have been taken off and hand hygiene has been performed. Gloves are considered heavily contaminated and should never be used to touch the head or face area. Removing the mask earlier in the sequence increases the risk of transferring pathogens from dirty gloves to the wearer's respiratory mucosa. D. The flexible metal piece must be positioned at the top of the mask, over the bridge of the nose, to ensure a proper fit. Pressing this strip against the contours of the nose prevents gaps that would allow unfiltered air to enter or exit. Placing the metal piece at the bottom would leave the nose exposed and compromise the protective function of the personal protective equipment.