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Why Order an ABR, Too?

John A. Ferraro, PhD, MS, ASHA Fellow, FAAA

November 21, 2005

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Question

I tested a five year old boy this week and was extremely confident in his responses. He has a moderate rising to slight SNHI in the right ear and a mild SNHI rising to normal in the left ear. He passed screening DPOAE on the left ear and referred on the right ear. My ENT ordered a CAT scan and an MRI. He also told me to schedule him for ABR. Is there any additional diagnostic information to be obtained from ABR?

Answer

According to the literature, it is possible that both MRI and CAT scan can miss small lesions that might be detectable via ABR. The new "stacked ABR" approach is especially suited for this situation. Thus, if your ENT physician suspects a small mass-occupying lesion, ABR, even the conventional method, may be useful.

John A. Ferraro, Ph.D.
Professor and Chairman
Hearing and Speech Department
University of Kansas Medical Center
Co-Director
KU Intercampus Program in Communicative Disorders Associate Dean for Research, School of Allied Health


John A. Ferraro, PhD, MS, ASHA Fellow, FAAA

Carolyn Doughty-Margaret Kemp Chairman and Professor, Hearing and Speech Department, University of Kansas Medical Center and - Co Director, University of Kansas Intercampus Program in Communicative Disorders ( both positions held since December, 1983)-

John A. Ferraro, Ph.D., FASHA, FAAA Degrees: Ph.D., Speech and Hearing Sciences, University of Denver, 1972. M.S., U. Denver, Biology B.S., Southern Colorado St. College, Biology Positions: Current: Carolyn Doughty-Margaret Kemp Chairman and Professor, Hearing and Speech Department, University of Kansas Medical Center and -    Co Director, University of Kansas Intercampus Program in Communicative Disorders ( both positions held since December, 1983)-    Associate Dean for Research, School of Allied Health, KU Medical Center (since October, 1999) Former:-    Associate Dean, School of Allied Health (1985 - 93) and      Acting Dean of SAH (1992 - 1993), University of Kansas Medical Center -    1972 1974: Post Doctoral Fellow, Auditory Research     Laboratory, Northwestern University (under the direction of Peter Dallos)  -    1974 1981: Asst./Assoc. Professor, Speech and Hearing Science Section, Ohio State University -    1981 1983: Clinical Neurophysiologist, Swedish Medical Center, Englewood, Colorado Research/Publication/Presentation History:  Over 70 publications (journal articles, book chapters, conference proceedings, etc.) and 150 presentations relating to the clinical applications of auditory evoked potentials/auditory   physiology.  -1997 textbook Laboratory Exercises in Auditory Evoked Potentials   (Singular Publishing, Inc.)

- Current Grant: Improved Method of Auditory Assessment in Infants, Deafness Research   Foundation. Professional Service  -     Substantive Change Committee of the ASHA Council of Academic Accreditation (2001 –
       present)
-     Vice President for Standards and Credentials, Council of Academic Programs in       Communication Sciences and Disorders (2002 – 2004) -    ASHA Council of Academic Accreditation in Audiology and Speech Language Pathology (1998 – 2002)-    ASHA-AAA-CAPCSD Joint Ad Hoc Committee on Doctoral      Education in Audiology (2001 – 2002)-    ASHA Vice President for Audiology Coordinating Committee (1997 - 2000)-    President (President-Elect, and Past-President) of the Council of Academic Programs in Communication Sciences and Disorders (1993-1996)-    Member of first ASHA Working Group on AEPs-    Chaired ASHA SID #6 Sub-Committee on AEP Specifications Recent Awards:  -    Honors of the Council of Academic Programs in Communications Sciences and     Disorders (2001). -    2002 Outstanding Honorary Alumnus, School of Allied Health, University of Kansas Medical      Center. -    2003 Center for Excellence Graduate Teaching Award, University of Kansas. (ASHA Fellow – 1992)"


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