Correlation of the threshold of auditory brainstem response with the auditory steady state response in hearing loss patients
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Keywords
Actions potentials, evoked potentials, auditory, brainstem, sensory re¬ceptor cells
Abstract
Introduction: The advancement of hearing aid devices has led to the development of electrophysiological techniques for the diagnosis of hearing loss. Aim: To compare the thresholds of auditory brainstem response (ABR) with the auditory steady state response (ASSR) in hearing loss children. Material and method: A descriptive observational study of cases from 0 to 6 years of age with hearing loss, diagnosed by ABR and ASSR was performed. The Spearman correlation test is used to compare the threshold obtained for the V wave in the ABR and the average value recorded in 2 and 4 kHz in the ASSR. To know the concordance between the two tests, the Kappa index is used. Results: 89 ears were diagnosed with hearing loss, 23 with profound hearing loss. The Spearman’s rho value is 0.64 (p <0.001). The Kappa index obtained is 0.59 with a 95% CI between 0.52 and 0.66 (p <0.001). The mean difference thresholds between the ASSR and the ABR is -2.42 dB with a standard deviation of 13.11 dB. Conclusion: A moderate relationship and agreement between the tests is obtained, influence especially in patients with profound hearing loss. The thresholds of ASSR are higher than those of ABR.
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