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Textbook CE Course: Complex Cochlear Implant Cases: Management and Troubleshooting

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1.  Chapter 2 detailed the case of a man having issues with connection from the external processor to the internal implant and fluctuation of impedances. What was found to be the cause of this issue? Hormonal changes Subcutaneous air pocket Improper electrode insertion Inconsistent device use

2.  The child which was the case subject of chapter 4 initially presented with a perceived sound of “rain” from his processor. This sound is often described as static-like or humming. What caused this sound? Threshold parameter set too high Malfunction of the internal implant Streaming of an audio clip from another device directly to the processor The sound did not exist. This was attention-seeking behavior.

3.  The case of the woman in chapter 9 was found to be significantly under stimulated, which limited her access to sound. Electrically evoked compound action potentials (eCAPs) were performed to help identify the issue. This objective measure provides what information to the audiologist? The level of current needed to establish a proper threshold The proper level in which upper comfort levels (C,M,MCL) should be set The level of current at minimum is audible to the patient The measure does not provide any useful information

4.  Performing electrically-evoked stapedial reflex thresholds (eSRTs) requires which of the following? Normal tympanometry A 0.02 mmho deflection of reflex decay Stimulation presented from the programming software to the implant All of the above

5.  Which of the following is evidence of overstimulation for a cochlear implant user? Facial stimulation Current level significantly above an objectively measured eSRT Consistent removal of processors in the presence of loud sounds All of the above