18 out of 28
Lady has B/L hearing loss since 4 years which worsened during pregnancy. Type of impedance audiometry graph [AIIMS May 11)
Ans. B As curve
Leaves no confusion - for otosclerosis being the diagnosis.
In otosclerosis - impedance audiometry shows As type of curve.
In the early disease since middle ear aeration is not affected patient shows as Type A curve