Cochlear Nucleus 8 Manual page 8

Candidacy
Nucleus Hybrid mode is suitable for recipients who satisfy audiometric and hearing
performance criteria post-operatively, and have appropriate expectations regarding
outcomes.
New CI recipients: Post-operative evaluation
Perform unaided post-operative audiometric testing of each ear at regular intervals, to
monitor residual hearing levels over time. This should include air and bone conduction
thresholds and tympanometry as indicated, to detect the presence of any temporary or
permanent conductive component.
The current fitting range for the Hybrid receiver is shown below. Post-operative air
conduction thresholds within the shaded area can be amplified by Nucleus Hybrid mode.
Frequency (Hz)
If repeat post-operative audiometric testing shows rapid progression of hearing loss in the
implanted ear, together with a significant reduction in speech perception scores and
sound quality, the recipient may prefer to use their sound processor without Hybrid
mode.
4 Hybrid Mode Professionals Guide