Preventive Maintenance Procedures Flashcards

Which environmental condition poses the greatest risk of corrosion to hearing aid battery contacts?

Answer: High humidity combined with salt from perspiration

Salt in perspiration combined with humidity accelerates electrochemical corrosion on battery contacts, degrading conductivity.

A patient with a behind-the-ear hearing aid complains of reduced volume that fluctuates with head movement. Which maintenance check is most indicated?

Answer: Inspection of the battery contacts for oxidation or poor connection

Fluctuating volume related to movement strongly suggests a loose or corroded battery contact causing intermittent electrical connection.

What is the correct way to store hearing aids overnight to maximize longevity according to preventive maintenance best practices?

Answer: In a dry storage case or electronic dehumidifier with the battery door open

Overnight desiccant storage with the battery door open allows moisture to escape and prevents battery compartment corrosion.

Which of the following best describes the function of a wax guard (cerumen filter) in custom in-the-ear hearing aids?

Answer: It protects the receiver from cerumen ingress, preventing blockage and damage

Wax guards act as a physical barrier between the ear canal environment and the receiver, extending device lifespan.

When should an audiologist recommend earmold replacement rather than continued cleaning and maintenance?

Answer: When the earmold shows significant shrinkage, cracking, discoloration, or persistent feedback despite proper fit verification

Physical degradation signs such as shrinkage, cracking, or persistent acoustic feedback indicate the earmold can no longer provide an adequate seal.

A patient's in-the-ear hearing aid has a clogged microphone port. What is the appropriate first maintenance step?

Answer: Use a soft brush or microphone cover replacement tool to clear or replace the microphone filter

Microphone ports often have replaceable mesh covers; gentle brushing or filter replacement restores microphone function without damage.

During electroacoustic analysis as part of preventive maintenance, a hearing aid shows significant output reduction compared to its original manufacturer specifications. What is the most appropriate next step?

Answer: Document the discrepancy, check for physical causes (cerumen, damage), and consider manufacturer repair or replacement if no correctable cause is found

Output deviations beyond acceptable tolerances require investigation of physical causes before adjustment; unresolvable deviations warrant repair or replacement.