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. How does ongoing follow-up support Tinnitus Management & Treatment in Hearing Aid Certification? → It ensures optimal performance and patient satisfaction over time
4. What is the primary purpose of Types of Hearing Loss & Assessment in Hearing Aid Certification? → Improving hearing outcomes and patient quality of life
5. What documentation is required for Pediatric Hearing Aid Fitting in Hearing Aid Certification? → Assessment results, fitting parameters, patient preferences, and follow-up notes
6. What role does patient education play in Telehealth & Remote Hearing Services for Hearing Aid Certification? → It empowers patients to manage their hearing health effectively
7. Real Ear Insertion Gain (REIG) is calculated by: → Subtracting the REUR from the REAR (REAR − REUR)
8. Why is speech audiometry an important part of hearing assessment? → Measures ability to hear and understand speech
9. What is the primary purpose of Telehealth & Remote Hearing Services in Hearing Aid Certification? → Improving hearing outcomes and patient quality of life
10. What does OSPL90 (or SSPL90) measure in hearing aid specifications? → Maximum output sound pressure level with a 90 dB SPL input sweep
11. Which component in a hearing aid converts the processed electrical signal back into sound? → Receiver (speaker)
12. Which factor is most important when selecting approaches for Hearing Aid Maintenance & Repair in Hearing Aid Certification? → Individual patient needs, preferences, and lifestyle
13. What type of battery chemistry is most commonly used in modern disposable hearing aid batteries? → Zinc-air
14. Why is follow-up counseling essential for hearing aid users? → Ensures continued success with hearing aids
15. What is the primary purpose of using a 2cc coupler when measuring hearing aid performance? → To standardize electroacoustic measurements in a controlled, repeatable cavity
16. What documentation is required for Assistive Listening Device Technology in Hearing Aid Certification? → Assessment results, fitting parameters, patient preferences, and follow-up notes
17. What is the primary requirement for dispensing hearing aids under FDA regulations? → Physician evaluation or medical waiver
18. What is the primary function of the microphone in a hearing aid? → Convert acoustic sound into an electrical signal
19. During real ear measurement, the probe tube should be positioned approximately: → 5–6 mm past the medial end of the hearing aid tip, within 5 mm of the eardrum
20. What effect does increasing the vent diameter in an earmold have on the low-frequency response? → Reduces low-frequency gain and decreases the occlusion effect
21. What documentation is required for Cochlear Implant Basics & Referral in Hearing Aid Certification? → Assessment results, fitting parameters, patient preferences, and follow-up notes
22. Which factor is most important when selecting approaches for Pediatric Hearing Aid Fitting in Hearing Aid Certification? → Individual patient needs, preferences, and lifestyle
23. What is the purpose of a hearing aid verification process? → Ensures hearing aid settings meet prescribed targets
24. What does the 'Full-on Gain' (FOG) measurement indicate about a hearing aid? → The maximum gain achievable with the volume control set to maximum
25. Which U.S. regulation governs the sale and distribution of hearing aids? → FDA
26. What role does patient education play in Types of Hearing Loss & Assessment for Hearing Aid Certification? → It empowers patients to manage their hearing health effectively
27. Which communication strategy is most effective when counseling a patient with hearing loss? → Using clear speech and visual cues
28. Which standard defines the allowable electroacoustic tolerances for hearing aid manufacturer specifications? → ANSI S3.22 (Specification of Hearing Aid Characteristics)
29. Which factor can contribute to noise-induced hearing loss? → Prolonged exposure to loud sounds
30. Functional gain in hearing aid validation is defined as: → The difference in decibels between a patient's unaided and aided sound field thresholds