Cochlear SPrint Sound Processor Informações Técnicas descarregar pdf (Página 61)

CLINICAL GUIDANCE | SECTION TWO

Performing Psychophysics

Note: It is important that you perform psychophysics on an electrode-by-

electrode basis. Interpolation or streamlined ﬁtting is not appropriate for an

ABI due to variation in T- and C-levels from one electrode to the next, even

when using monopolar mode.

Default parameters

Cochlear recommends using the SPEAK strategy for the initial programming

session, as it allows the use of wider pulse widths and has a lower rate of

stimulation. Both of these factors may contribute to a reduction of side effects

that the recipient may experience. Monopolar (MP1+2) mode is recommended

for all routine programming. In the event of excessive side effects, you may use

bipolar mode. For more information, see Managing side effects.

Use the following default parameters for programming:

Strategy: SPEAK

Stimulation mode: MP1+2

Pulse width: 100 µs

Number of maxima: 6

Pulse rate: 250 Hz

Telemetry

Caution: Do not perform an impedance telemetry sweep prior to an initial

psychophysics investigation. All electrodes are stimulated during this process

and could cause discomfort to the recipient if they have low side-effect

thresholds on any electrodes.

Finding T- and C- levels

Programming the Nucleus 24 ABI differs from other Cochlear Nucleus implants

because most recipients may experience non-auditory side effects on a

number of channels. Whether these side effects occur on a few channels rather

than most, or whether they occur around C-level rather than around T-level

determines the complexity of programming.

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 77 78

Sem comentários

Cochlear SPrint Sound Processor Informações Técnicas Página 61