NBC-HIS EXAM (2025/2026) QUESTIONS AND
CORRECT VERIFIED ANSWERS GRADED A+
Most common cause of hearing loss at 4000 Hz
Acoustic Trauma
A mother comes in worried her hearing is worse since the birth of her first kid what is likely
happening
Otosclerosis
A large dip in the 6000Hz in only one ear with positive tone decay is indicative of
Possible retro-cochlear tumor
Patient comes in complaining his hearing aids worked fine until they were cleaned, now they
are weak and feeding back what is the likely cause of this problem
Receiver tubing is pushed in
How does an osteoma present
Bony growth in external auditory canal
, Which validation method can be effectively performed in a sound field environment?
NU-6
Which sound field test determines the benefit of directional microphones
QuickSIN
acoustic impedance
resistance a material provides to the passage of sound waves
During otoscopic inspection what is not a contraindication
Compliance of the tympanic membrane
What two thing verifies an audiogram
SRT and PTA have to agree (Must be within 5-10 decibels of each other
A patient brings his hearing aids in to be cleaned and sets them on the counter what type of
transmission should the receptionist be concerned about
Indirect Transmission
CORRECT VERIFIED ANSWERS GRADED A+
Most common cause of hearing loss at 4000 Hz
Acoustic Trauma
A mother comes in worried her hearing is worse since the birth of her first kid what is likely
happening
Otosclerosis
A large dip in the 6000Hz in only one ear with positive tone decay is indicative of
Possible retro-cochlear tumor
Patient comes in complaining his hearing aids worked fine until they were cleaned, now they
are weak and feeding back what is the likely cause of this problem
Receiver tubing is pushed in
How does an osteoma present
Bony growth in external auditory canal
, Which validation method can be effectively performed in a sound field environment?
NU-6
Which sound field test determines the benefit of directional microphones
QuickSIN
acoustic impedance
resistance a material provides to the passage of sound waves
During otoscopic inspection what is not a contraindication
Compliance of the tympanic membrane
What two thing verifies an audiogram
SRT and PTA have to agree (Must be within 5-10 decibels of each other
A patient brings his hearing aids in to be cleaned and sets them on the counter what type of
transmission should the receptionist be concerned about
Indirect Transmission
