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Sycle OTC Hearing Industry Panel Discussion Post Event - July 2021

Myringotomy Tubes and RECD

Marlene Bagatto, AuD, PhD, Sheila T. Moodie, PhD, MCISc

August 25, 2008

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Question

How is a myringotomy tube or eardrum perforation accounted for when applying RECD?

Answer

Myringotomy tubes or eardrum perforations will cause negative values in the low-frequency region (i.e. -5 to -10 dB). If this is the case, the negative RECD values should be used for the conversion of audiometry to SPL and for verification. This is because the status of the eardrum impacts the conduction of sound for both audiometry and hearing aid use. In addition, the hearing thresholds in the low frequencies are likely to be worse due to the abnormal status of the eardrum. The combination of higher hearing thresholds and negative RECD values will result in more prescribed gain for average speech, which is what is appropriate for the patient at this time. When the status of the ear changes, the RECD should be re-measured and any necessary modifications to the electroacoustic characteristics of the hearing aid should be made.

This Ask The Expert Question was taken from an article previous published on Audiology Online entitled, "Learning the Art to Apply the Science: Common Questions Related to Pediatric Hearing Instrument Fitting". See Bagatto and Moodie (2007) for additional information.

References

Bagatto, M., Moodie, S., (2007, October 8). Learning the Art to Apply the Science: Common Questions Related to Pediatric Hearing Instrument Fitting. Audiology Online, Article 1886. Accessed from the Article Archives from www.audiologyonline.com/articles/

Marlene Bagatto, Au.D., is a Research Associate and Sheila T. F. Moodie, M.Cl.Sc., is a Research Audiologist at the National Centre for Audiology at the University of Western Ontario in London, Ontario, Canada.


marlene bagatto

Marlene Bagatto, AuD, PhD

Adjunct Research Professor, National Centre for Audiology, Western University

 

Marlene Bagatto is an Adjunct Research Professor at the National Centre for Audiology at Western University in London, Ontario, Canada. Her research interests have a clinical focus and relate to fitting hearing aids to the pediatric population. Dr. Bagatto has given numerous presentations and workshops as well as published several articles on the topic. Recently, she led the development and evaluation of an outcome measurement guideline for infants, toddlers and preschool children who wear hearing aids. In addition, Dr. Bagatto provides clinical services to infants involved in the Ontario Infant Hearing Program at the H.A. Leeper Speech and Hearing Clinic at Western. She also serves as an Amplification Consultant and Instructor for the Ontario Ministry of Children and Youth Services’ Infant Hearing Program.


sheila t moodie

Sheila T. Moodie, PhD, MCISc

Research Audiologist in The Child Amplification Laboratory

Sheila Moodie is a Research Audiologist in The Child Amplification Laboratory, at The National Centre for Audiology, University of Western Ontario and a PhD Candidate in the Health and Rehabilitation Sciences Program, Faculty of Health Sciences also at The University of Western Ontario. She has assisted in the development and methods to improve the clinical implementation of the DSL Method for over 20 years. She has been awarded a Canadian Institutes of Health Research Frederick Banting and Charles Best Canada Graduate Scholarship to study methods that reduce the knowledge utilization gap in audiology by encouraging collaborative linkage and exchange between researchers and clinicians. none


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