Investigação e análise do reflexo acústico contralateral em crianças com desvio fonológico

Abstract

Much has been studied on the role of the acoustic reflex in the communication process. Aim: To examine the responses of the contralateral acoustic reflex in children with normal hearing and phonological disorders. To investigate the relationship of the level of severity of phonological disorder. To measure the chances of it affecting all the frequencies tested. Materials and Methods: The study was based on the analysis of medical charts from 70 children with phonological disorders, and 24 females and 46 males, aged between 5 and 7 years. Audiological tests were analyzed to exclude children with hearing loss, evaluation of the contralateral acoustic reflex and the level of severity of phonological disorder. Study Design: Prospective. Results: All children showed change in the contralateral acoustic reflex. There was no significant relationship between the level of severity of phonological disorders and changes in the acoustic reflex for both genders. Female children showed no statistically significant value in the relationship between the frequencies, except at 500 Hz. Male children had more significant relationship in the association between changes in frequencies tested. Conclusion: It is believed that children with phonological disorders exhibit changes in the contralateral acoustic reflex.

Estudo das medidas de imitância acústica com tom sonda de 226 e 1000 Hz em neonatos

“…The research of AR is performed by means of a tone stimulus of strong intensity, which will make possible the contraction of the middle ear muscles, especially the stapedius. It can be performed ipsilaterally (on the same side in which the stimulus was presented) or contralaterally (on the opposite side of the stimulus presented) in relation to the tested ear (6)(7)(8)(9) . The research allows to analyze and measure the thresholds of the acoustic reflexes in the frequencies of 500, 1000, 2000 e 4000 Hz (7) .…”

“…It can be performed ipsilaterally (on the same side in which the stimulus was presented) or contralaterally (on the opposite side of the stimulus presented) in relation to the tested ear (6)(7)(8)(9) . The research allows to analyze and measure the thresholds of the acoustic reflexes in the frequencies of 500, 1000, 2000 e 4000 Hz (7) . In order that the capture of acoustic reflexes may be carried on, the integrity of the tympano-ossicular system and the afferent and efferent auditory pathways of the reflex arc are necessary (6) .…”

Is Acoustic Stapedius Reflex Altered by Propofol Anesthesia in Children? A Pediatric Observational Case-control Prospective Study Protocol

“…Acoustic stapedius reflex is one of the tests among others used to assess audition [5][6][7]. Not much evidence exists whether propfol anesthesia alters acoustically induced stapedial reflex in children.…”