Final answer:
In a practice with many HIV-positive patients, film rollers in automatic processors should be regularly cleaned and disinfected. Replacing them frequently may be necessary, but cleaning is important regardless. They do not need to be replaced yearly if maintained properly.
Step-by-step explanation:
In a practice with many HIV-positive patients, the film rollers in automatic processors should be regularly cleaned and disinfected to prevent cross-contamination. HIV can be transmitted through blood and other bodily fluids, so it is crucial to maintain strict hygiene practices.
Replacing the film rollers frequently may be necessary if they become damaged or worn out, but regular cleaning and disinfection should still be conducted.
It is not necessary to exchange the film rollers for new ones yearly, as long as they are properly cleaned and maintained.