Case Studies

Question 1

Are the latencies of wave V slightly longer for BC clicks?

Answer 1

Yes
For adults, the wave V latency increases about 0.6 ms
For children, the wave V latency increases about 0.7 ms

Question 2

Is the dynamic range of BC ABRs smaller?

Answer 2

Yes
Need to start at a lower intensity due to bone oscillator (start at 60 dB nHL rather than 80 or 85 dB nHL)

Question 3

Do you do rate studies on pediatrics?

Answer 3

Not typically
Looking for neurodiagnostic information when performing rate studies (tumors, etc.)
Not typical for pediatrics because we are not expecting to see abnormalities
Vestibular schwannomas age of onset is typically 40 to 60 years