Audiological characteristics and exploratory treatment of a rare condition of acute-otitis-media-associated sudden sensorineural hearing loss

Figure 1 Audiogram. Audiogram pretreatment: conductive hearing loss was observed at low frequencies of 0.25–1 kHz, and sensorineural hearing loss was seen at high frequencies of 2–4 kHz; the hearing threshold of the left ear was normal. [: Bone conduction of right ear with sheltering; <: Bone conduction of left ear; O: Air conduction of right ear; ∆: Air conduction of right ear with sheltering; ×: Air conduction of left ear; blue markers = left ear; red markers = right ear.