Clinical feasibility and acceptability of recording infant obligatory cortical auditory evoked potentials in the sound field: results from the first 55 infants

Contact Name: Prof Kevin Munro

Contact Email: kevin.j.munro@manchester.ac.uk

Dr Kevin Munro has a background in medical sciences and obtained an MSc (Distinction) and PhD in Audiology at the University of Southampton. He also has a Diploma in Management Studies. In August 2002, Kevin took up the position of Clinical Senior Lecturer in Audiology at the University of Manchester and was promoted to Reader in 2005 and then Professor in 2011. Prior to this time, he worked as a clinical scientist in audiology and has been Head of several clinical audiology services including the Regional Audiology Clinic at the Institute of Sound and Vibration Research, University of Southampton. He has extensive clinical experience that includes the assessment and rehabilitation of hearing and balance disorders in adults, and the assessment and habilitation of hearing (including cochlear implants) in children. His research interests include paediatric assessment and habilitation, plasticity of the auditory system, and ‘dead regions’ within the cochlea. in 2001, the British Society of Audiology awarded Kevin the Thomas Simm Littler prize for his contribution to research in audiology. In 2008, the British Society of Audiology then awarded him the Jos Millar shield. He is involved in a variety of professional activities, was a member of the editorial board of the British Journal of Audiology and is a former editor of British Society of Audiology News. He is a former Chief Examiner for the British Association of Audiological Scientists. He will become Chair of the British Society of Audiology in 2012 after serving as Vice Chair from 2010-2012. He has organised many professional and scientific conferences including the 2010 annual conference of the British Society of Audiology.

Munro, Kevin J1,2, Nassar Ruth2, Purdy, Suzanne C3; O’Driscoll, Martin1,2, Booth, Rachel2, Bruce, Iain1,2; Uus Kai1.

1School of Psychological Sciences, University of Manchester, UK; 2Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK; 3School of Psychology, University of Auckland, New Zealand

 

There is growing interest in using supra-threshold obligatory cortical auditory evoked potentials (CAEPs) to complement established paediatric clinical test procedures. As part of an on-going study investigating the clinical usefulness of aided CAEPs in infants, we have been obtaining data on feasibility and acceptability of the procedure within the clinical setting. Responses to short duration stimuli (/m/, /g/ and /t/), will ultimately be recorded in 100 normal-hearing and 10 hearing-impaired infants (between 4 and 39 weeks of age) from a loudspeaker at zero degree azimuth and a presentation level of 65 dB SPL. At the time of writing, we have the following data from the first 55 infants (who all passed new-born screening and have no reported hearing difficulties): CAEP test duration, completion and detection rates, and a parental acceptability questionnaire (9 questions with 7-point scale, 1 being best). The mean test duration was 27 minutes (range 17-89 min). A response was obtained to at least one stimuli in 100% of infants. Responses to /g/, /t/ and /m/ were detected in 96%, 88% and 80% of infants, respectively. So far, 29 parents have completed the acceptability questionnaire and the mean score of individual questions range from 1.14-2.62. The poorest score was obtained for the question enquiring about the difficulty of keeping the baby awake and quiet for the duration of the test procedure. In conclusion, the short test duration, high completion and detection rates and good scores on the acceptability questionnaire suggest that the sound field CAEP procedure may be feasible and acceptable for use in infants within the clinical setting.

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