Middle ear effusion with intact eardrum gives rise to which type of tympanogram?: (A) Type A, (B) Type B, (C) Type C, (D) Type D
Answer is B. Type B tympanogram is flat in appearance, indicating lack of compliance. The volume measurement that is simultaneously performed with tympanometry helps to differentiate between a flat tympanogram suggesting an intact eardrum with middle ear effusion and a perforated eardrum or patent ventilating tube.