Personal protective equipment headphones: evaluation of effectiveness in workers exposed to noise

ABSTRACT: Purpose: to evaluate the effectiveness of the use of equipment of individual hearing protection (auricular protector) of insertion in workers exposed to noise, checking if its use with and without orientation about its adequate use, provides the necessary seal in the hearing impairment and extra-hearing impairment prevention. Methods: it is a descriptive pre-experimental study, of cross-sectional, which used a quantitative method for the data analysis. 75 workers were evaluated (150 ears), with exposure to occupational noise from different sectors and functions of several companies or self-employed workers. All of them were submitted to tonal audiometry in three distinctive moments: i) for obtaining the hearing threshold; ii) using auricular protector of the moldable foam type without orientation about its adequate use; iii) using the auricular protector after the orientation of the phonoaudiologist that evaluates. Results: the comparison between the values obtained in the audiometric evaluation with the use of auricular protector, with and without orientation of the professional phonoaudiologist, revealed a statistically significant gain only in the case of rehabilitation of the device in the auditory canal. Conclusion: the comparison between the answers evidences a higher effectiveness and attenuation of the auricular protector of the moldable foam type, after the adequate orientation of the phonoaudiologist.