Exam Preview

The Use of Cortical Auditory Evoked Potentials to Assist in the Management of Infants with Sensorineural Hearing Loss and ANSD, presented in partnership with Seminars in Hearing

---

1.  What aspects of cortical auditory evoked potentials make them desirable to use for the assessment and management of infants with hearing loss? CAEPs can be performed on babies while they are awake The stimuli used for CAEP testing are longer in duration than for auditory brainstem response testing so the hearing aid has time to react in a similar way to what it does for ongoing speech The CAEP response is larger in amplitude than the ABR, making it easier to detect All of the above

2.  Which of the following statements is false? Infants who show CAEP responses present to a range of stimuli in both ears are more likely to have higher scores on tests of functional auditory behavior. Infants with absent CAEPs to a range of stimuli may still demonstrate responses to sound in their day-to-day listening environment. It is sufficient to use CAEP testing alone when making decisions about whether an infant should be referred on for cochlear implantation evaluations. Using questionnaires to assess functional auditory behavior engages parents in the observation and management process.

3.  An absent CAEP can mean: The gain of the hearing aid is insufficient for the degree of the hearing loss The infant was too noisy during the test to record a reliable CAEP The infant does hear the sound but it is one of approximately 20% of measures in infants where a CAEP response is not detected All of the above

4.  Which of the statements about cortical auditory evoked potentials (CAEPs) is false? An increase in stimulus sensation level has been shown to increase the detection rate of CAEPs in infants with normal hearing and SNHL. CAEPs require lower temporal precision in order to be recorded compared to an ABR. If a CAEP response is absent, it means the infant is unable to hear the sound. Clinicians need to take into account audiological results and parental observations when interpreting absent CAEP results.

5.  Which of the following about auditory neuropathy spectrum disorder (ANSD) is true? A CAEP can be present even when the auditory brainstem response (ABR) is absent in infants with ANSD. If there is a cochlear microphonic present and the ABR is absent at 85 dBHL it means there is a severe-profound hearing loss. CAEPs always deteriorate when infants are fitted with amplification. CAEPs can't be used to assess infants with ANSD, you just have to wait until they are older and can perform reliable behavioral testing before you decide whether to fit hearing aids or not.

6.  According to the Australian Hearing protocol, the following clients have priority for CAEP testing: children with unilateral hearing loss children with auditory neuropathy spectrum disorder children who can provide reliable behavioural results a&b b&c

7.  According to the Australian Hearing protocol, when CAEPs are detected for a specific speech sound at 75 dB SPL but not at 65 dB SPL, and residual electroencephalogram (EEG) noise levels are acceptable: no change of the estimated audiogram is warranted the audiogram is re-estimated at the corresponding frequency range by 5 dB the audiogram is re-estimated at the corresponding frequency range by 10 dB the audiogram is re-estimated at the corresponding frequency range by 15 dB the client is reassessed with the CAEP test on the same day

8.  According to the Australian Hearing protocol, a valid reason for not conducting a CAEP test is the child having a severe hearing loss having otitis media being awake and alert being younger than 6 months of age not being able to perform behavioral testing

9.  In which cases was CAEP testing not clinically possible or useful? the child had a noisy electroencephalogram (EEG) the child was uncooperative the child had a severe case of auditory neuropathy spectrum disorder none of the above all of the above

10.  Apart from providing additional objective information when behavioural information is not available, CAEP testing potentially can be used: to evaluate hearing aid fittings to evaluate unaided ability in auditory neuropathy spectrum disorder cases to provide additional objective information when deciding for CI candidacy for parent counseling all of the above