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CLINICAL GUIDANCE | SECTION TWO

Scenario Three

In a typical case, there is usually a group of channels which has only side

effects, another which has only auditory sensations, and a further group which

has a side effect which presents between T- and C-level (Figure 6).

It is recommended that you investigate C-levels on all possible channels before

attempting to ﬁnd accurate T-levels. It may also be helpful to investigate the

periphery of the electrode array to get a quick impression of auditory and non-

auditory areas (see Figure 7).

Using this method:

1. Test the periphery and then systematically test all electrodes using nearby

levels and nearby side effects as an indication of the likely response.

2. For each electrode combination, commence stimulation at Current Level =

1 and increase slowly.

3. Watch the recipient for any non-auditory side effects that are not obvious

to the recipient (e.g. throat twitch). Check the heart monitor for any

signiﬁcant rhythm change.

4. It may be useful for the recipient to see the stimulus light on the

programming system and to indicate sensations (auditory and non-

auditory) on a loudness/sensation strength scale.

Figure 6 : Typical

ABI programming

scenario

Figure 7 :

Investigating the

periphery of the ABI

electrode array

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 77 78

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Cochlear SPrint Sound Processor Información técnica Pagina 63