Prepare for the ACVREP Orientation and Mobility (OandM) Exam. Use our study aids and multiple-choice questions, each with detailed explanations. Boost your confidence and succeed!

Multiple Choice

Which decibel range corresponds to profound hearing loss?

Profound hearing loss is defined by thresholds at 91 dB or higher, meaning only extremely loud sounds are detectable. In audiology, the typical bands are normal hearing roughly 0–25 dB, mild up to about 40 dB, moderate up to 55 dB, moderately severe up to 70 dB, and severe up to 90 dB. The 91+ dB range clearly fits the definition of profound loss. For someone with this level of loss, everyday sounds like normal conversation (around 60 dB) or many city sounds (often 80–90 dB) would usually be inaudible without amplification or other assistive methods. So, the 91+ dB range is the best match for profound hearing loss.

Profound hearing loss is defined by thresholds at 91 dB or higher, meaning only extremely loud sounds are detectable. In audiology, the typical bands are normal hearing roughly 0–25 dB, mild up to about 40 dB, moderate up to 55 dB, moderately severe up to 70 dB, and severe up to 90 dB. The 91+ dB range clearly fits the definition of profound loss. For someone with this level of loss, everyday sounds like normal conversation (around 60 dB) or many city sounds (often 80–90 dB) would usually be inaudible without amplification or other assistive methods. So, the 91+ dB range is the best match for profound hearing loss.