Correct answer is option B – air threshold differences of at least 40dB between ears.
A shadow curve on the audiogram is a false audiogram curve that is obtained when sound presented to one ear is heard on the opposite ear. This audiogram is recorded in instances of monaural deafness.
Air conducted stimulus may be head by the contralateral normal ear in unilateral deafness. It is represented as two thresholds connected on a graph with a line. The air threshold difference between the two ears ranges from 40dB to 80db in a shadow curve.
Hope this helps.
The correct answer to this question is Cholesteatoma.
Over 200,000 cases of hearing the loss in the United States each year. There are many things that one may observe in a patient when they experience hearing loss. To observe hearing loss, tests may be done to see how extensive the damage is. A friend or family member may also observe the loss at home, seeing how loud the television is or how often they have to repeat themselves during conversations.
While there is no cure, there are treatments that can be done to help the condition. To treat hearing loss, one can wear a hearing aid, as well as to conduct a specialist to help with the hearing.