A 25-year-old woman suffering from bilateral hearing loss for 6 years which became profound with pregnancy. On tympanogram, which of the following curve is obtained?: (A) AD, (B) AS, (C) B, (D) A
Answer is B. Bilateral hearing loss getting worse in pregnancy is due to otosclerosis. Tympanogram in this case would be AS type. It is a normal tympanogram with reduced compliance due to stapes fixation.