I received the packet of Nolan's hearing tests/hearing aid settings in the mail today. This is the last documentation required for John Tracy's Summer Session, so I am pleased to have it! I am going to make a photocopy on Monday (so that we have a copy in case the other one gets lost) and then mail it to the Clinic.
Nolan's audiogram is below (copied onto a larger graph for photographic purposes). The "teaching audiogram" used below has different categories of hearing loss than typically used, so disregard those levels. Nolan's hearing loss is not in the "severe" category, but "moderately severe rising to moderate." For reference, normal hearing in children is above the 15dB line. Nolan cannot hear any sound above the lines on the graph (unaided). Basically, with his hearing aids off, he can hear dogs barking and babies crying, but none of the sounds of speech.
Over time, Nolan's hearing loss has fluctuated a great deal. When he was born, he had a 40dB loss rising to borderline normal hearing (with present OAE in his right ear). Obviously, this is no longer the case. Still, we've had improvements and decreases in hearing over time- I created a table to show his hearing levels, with the total change from May 2008 (first booth test) through May 2010. The first two dates are estimated hearing levels from ABR testing.
There is a net loss at each frequency, going from a mild/moderate loss to a moderately severe rising to moderate loss. I am interested in obtaining more bone conduction testing to determine how much of Nolan's hearing is conductive vs. sensorineural. For amplification purposes, it doesn't matter: even if there is a conductive component, it is permanent and his hearing aids had to be increased. On the other hand, it would be nice to know if there is a conductive component to gauge how "progressive" his loss might be. John Tracy will perform a full battery of tests when Nolan is at the clinic, so I am hopeful that a bone conduction test will be included.