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Paper Information

Title: 

EVALUATION OF THE SLOPE OF AMPLITUDE GROWTH FUNCTION CHANGES OF THE ELECTRICALLY EVOKED ACTION POTENTIAL IN THE THREE MONTHS AFTER RECEIVING THE DEVICE IN CHILDREN WITH COCHLEAR IMPLANT

Type: PAPER
Author(s): POURJAVID A.R.*,ADEL GHAHRAMAN M.,SEDAIE M.,FARHADI MOHAMMAD,DANESHI A.,MOTASADDI ZARANDY M.,EMAMJOME H.,MOBEDSHAHI F.,ABASALIPOUR P.
 
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Name of Seminar: INTERNATIONAL CONNGRESS OF IRANIAN SOCIETY OF OTOLARYNGYOLOGY / HEAD AND NECK SURGERY
Type of Seminar:  CONGRESS
Sponsor: 
Date:  2010Volume 1
 
 
Abstract: 

OBJECTIVE: IN NEURAL RESPONSE TELEMETRY, INTRACOCHLEAR ELECTRODES STIMULATE THE AUDITORY NERVE AND RECORD THE NEURAL RESPONSES. THE ELECTRICAL STIMULATION ARE SENT TO THE AUDITORY NERVE BY AN ELECTRODE AND THE RESULTING RESPONSE, CALLED ELECTRICALLY EVOKED COMPOUND ACTION POTENTIAL, IS RECORDED BY AN ADJACENT ELECTRODE. THE MOST IMPORTANT CLINICAL APPLICATIONS OF THIS TEST ARE EVALUATING AND MONITORING THE INTRA- AND POSTOPERATIVE RESPONSES OF THE AUDITORY NERVE AND HELPING THE PRIMARY SETTING OF THE SPEECH PROCESSOR. THE AIM OF THIS STUDY WAS EVALUATING THE POTENTIAL'S SLOPE OF AMPLITUDE GROWTH FUNCTION CHANGES IN THE THREE MONTHS AFTER RECEIVING THE DEVICE IN PEDIATRIC COCHLEAR IMPLANT RECIPIENTS.
MATERIALS AND METHODS: THIS LONGITUDINAL STUDY EVALUATED THE POTENTIAL'S SLOPE OF AMPLITUDE GROWTH FUNCTION CHANGES IN FOUR GIVEN ELECTRODES IN FOUR SESSIONS AFTER RECEIVING THE DEVICE WITH APPROXIMATELY ONE-MONTH INTERVALS IN ALL THE CHILDREN WHO WERE IMPLANTED IN THE AMIR ALAM AND THE HAZRAT-E-RASOUL HOSPITALS FROM JULY TO DECEMBER, 2007. FRIEDMAN TEST USED TO ANALYSIS OF RESULTS.
RESULTS: ELECTRICALLY EVOKED COMPOUND ACTION POTENTIAL'S MEAN SLOPE OF EACH ELECTRODE WAS MORE IN LATER SESSIONS RELATIVE TO THAT IN THE FIRST SESSION, WHILE THERE WAS A SIGNIFICANT DIFFERENCE BETWEEN THE 1ST AND THE OTHER ELECTRODES’ RESPONSES IN EVERY SESSION (P<0.05).
CONCLUSION: THE RELIABILITY OF THE RESPONSES RESULT IN MORE CERTAINTY OF THE CLINICIAN TO FIT THE SPEECH PROCESSOR FOR A LONG TIME. BETTER RESPONSES IN APICAL ELECTRODES MAY LEAD TO DEVELOP AN EFFECTIVE CODING STRATEGY.

 
Keyword(s): ELECTRICALLY EVOKED COMPOUND ACTION POTENTIAL, NEURAL RESPONSE TELEMETRY, COCHLEAR IMPLANT
 
 
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