Why is medical fitness important for respirator users?

Medical fitness is crucial for respirator users primarily to guarantee a good fit and seal. A respirator is effective only when it fits properly on the user’s face, creating a tight seal that prevents contaminated air from entering. If a user does not meet the required medical fitness standards, they may have physical conditions that affect their ability to achieve this proper fit. For instance, certain medical conditions can change the shape of a person's face or impair their ability to wear a respirator comfortably, resulting in leaks that diminish the device's protective capabilities. Hence, ensuring that the individual is medically fit directly supports effective respirator use in maintaining air quality and safeguarding the user from airborne hazards.

While confirming the ability to perform job duties is also important, the critical focus of medical fitness specifically for respirator use is on fitting and sealing, which are essential for proper respiratory protection.