HAC Cheat Sheet 2026

The 30 highest-yield HAC facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. How does ongoing follow-up support Cochlear Implant Basics & Referral in Hearing Aid Certification? → It ensures optimal performance and patient satisfaction over time
2. The International Outcome Inventory for Hearing Aids (IOI-HA) assesses patient outcomes across how many domains? → 7
3. Which of the following best describes the concept of 'significant other involvement' in hearing aid counseling? → Including communication partners in counseling to improve overall communication outcomes
4. How does ongoing follow-up support Tinnitus Management & Treatment in Hearing Aid Certification? → It ensures optimal performance and patient satisfaction over time
5. An adult patient's aided CNC word recognition score is 38% in the best ear. According to typical US CI candidacy criteria, how should the audiologist proceed? → Document the score and refer to a cochlear implant center
6. Which compression parameter determines the input level at which the hearing aid transitions from linear to compressed amplification? → Kneepoint (compression threshold)
7. In audiometry, the term 'threshold' is defined as the softest level at which a patient responds: → 50% of the time
8. During a listening check with a stethoset, the clinician hears no sound from the hearing aid despite a new battery. What should be checked next? → Whether the wax guard is clogged or the receiver is blocked
9. What is the primary purpose of Types of Hearing Loss & Assessment in Hearing Aid Certification? → Improving hearing outcomes and patient quality of life
10. What documentation is required for Pediatric Hearing Aid Fitting in Hearing Aid Certification? → Assessment results, fitting parameters, patient preferences, and follow-up notes
11. What distinguishes a wide-band FM ALD transmitter from a narrow-band FM ALD transmitter? → Wide-band transmitters occupy more bandwidth and can deliver higher audio fidelity
12. What role does patient education play in Telehealth & Remote Hearing Services for Hearing Aid Certification? → It empowers patients to manage their hearing health effectively
13. Real Ear Insertion Gain (REIG) is calculated by: → Subtracting the REUR from the REAR (REAR − REUR)
14. Why is speech audiometry an important part of hearing assessment? → Measures ability to hear and understand speech
15. What is the primary advantage of a multi-band compression system over single-band compression in hearing aids? → It allows independent gain adjustments across different frequency regions
16. What is the primary purpose of Telehealth & Remote Hearing Services in Hearing Aid Certification? → Improving hearing outcomes and patient quality of life
17. What does OSPL90 (or SSPL90) measure in hearing aid specifications? → Maximum output sound pressure level with a 90 dB SPL input sweep
18. Which audiometric finding is characteristic of auditory neuropathy spectrum disorder (ANSD)? → Present OAEs with absent or abnormal ABR
19. Which type of hearing aid coupling is most appropriate for a patient with chronic otitis externa who cannot tolerate an occlusive earmold? → Open-fit thin-tube or RIC with open dome
20. What does 'MPO' stand for in digital hearing aid specifications? → Maximum Power Output
21. The ANSI S3.6 standard primarily governs which aspect of audiology practice? → Audiometer calibration specifications
22. Under HIPAA, a hearing care professional may share a patient's audiogram with a referring physician without a separate authorization if: → The disclosure is for treatment purposes
23. Which coupling method is used when a patient with a telecoil-equipped hearing aid uses a neck loop connected to an FM receiver? → Inductive coupling
24. Which component in a hearing aid converts the processed electrical signal back into sound? → Receiver (speaker)
25. During speech audiometry, what does a word recognition score (WRS) of 72% suggest? → Poor speech discrimination ability
26. A patient with a bone-anchored hearing aid (BAHA) wants to use an FM system. What coupling method is most appropriate? → Bluetooth streaming to the BAHA sound processor
27. Which of the following is a required element on a hearing aid's labeling under FDA regulations? → Conditions for which medical evaluation is recommended before purchase
28. Which connectivity metric most directly affects the reliability of real-time remote hearing aid adjustments via manufacturer software? → Latency (ping)
29. A digital RF ALD system operating at 2.4 GHz may experience interference from which common household or office device? → Wi-Fi router or microwave oven
30. What term describes the ratio of the desired speech signal to background noise that an FM system is designed to improve? → Signal-to-noise ratio (SNR)