Response detection time of the automatic auditory brainstem response using different stimuli

Abstract

Study Design: Cross-sectional and comparative study. Objective of the study: To analyze the results of the Automatic Auditory Brainstem Response procedure comparing the time detection of the response using the CE-Chirp® and click stimuli. The following variables were taken into consideration: evaluated ear, gender, presence of Risk Indicator for Hearing Impairment and days of life of the newborn at the moment of the procedure. Methodology: The study included 20 newborns with an average age of five days of life. Statistical analysis was performed using the Wilcoxon test and Mann-Whitney U-test. Results: The results showed that responses are faster with the CEchirp® stimulus than with the clicks. It was observed that the time of detection of response for children with Risk Indicators for hearing Deficiency is higher in both stimuli. No statistically significant differences were observed in the other variables. Conclusion: The CE-chirp® stimulus is faster than the click stimulus, thus, it is expected to reduce the time of the Neonatal Hearing Screening, facilitating the diagnosis and early intervention of hearing impairment.