My son had his tonsils and adenoids removed and an insertion of tubes on Thursday while they had him under sedation they did an ABR hearing test to monitor his hearing. I was told his hearing was normal in his Right ear but there is a possiblity of a hearing loss in his left ear. We are going for a normal hearing test on Friday and then a second ABR hearing test on June 11th. Does anyone have any experience with this? I am not expecting much from Friday's hearing test because so far normal hearing tests have been unsuccessful. Also they aren't really patient with him with his PDD-NOS diagnosis and his inability to sit still.