Peate em bebês de 1 a 12 meses com risco para deficiência auditiva em um serviço de saúde auditiva

Abstract

Introduction: Infants with high hearing loss risk (HHLR) should be sent as quickly as possible to evaluation, as hearing loss effects on communication can be minimized when early detected. Therefore, universal newborn hearing screening is an important factor for early deafness detection, and Brainstem Auditory Evoked Potential (BAEP), an objective examination, has a key role in this process. This examination is more precise is a biological calibration is performed. Aim: to define BAEP made through equipment with bluetooth® in infants with risk of hearing loss from 1 to 12 months’ age in a public health service. Methods: cross-sectional study, fulfilled by BAEP results analysis of infants belonging to the equipment’s database used in the service and characterization of risk factors for hearing loss. The absolute latencies for waves I, III and V and interpeak latencies I-III, III-V and I-V were analyzed by age range, gender and ear, compared with data provided by the equipment. 101 patients diagnosed with integrity of auditory pathways were included in the study. Results: For statistical analysis, the software Statistica 13.3 and Matlab 6.0 were used. To characterize the population as HHLR, there was no statistical difference among genders for a significance level of 0.05 (5%). The most occurring factor was ICU time above 5 days, with increase of wave V absolute latency for congenital infections in right ear. For right and left ear absolute and interpeak latencies, a constant latency reduction was verified for age range of 1 to 9 months. In gender comparison, there was significant statistical difference in right ear for interpeak latencies I-III, III-V and I-V for age range of 1 to 3 months, and for wave III absolute latency for 7 to 9 months, while for left ear, waves III and V absolute latencies for 4 to 6 months and wave III for 7 to 9 months. Interpeak latencies I-III, III-V and I-V for 1 to 3 months, interpeak latencies I-III and I-V for 4 to 6 months and I-III for 7 to 9 months, always smaller for females. Comparing these results with equipment standard data, there was significant statistical difference for waves I and V for 4 to 6 months and for wave V for 7 to 9 months, while for wave I there was no difference. Reliability Index for this study and equipment data were calculated. Conclusion: It was verified a significant difference between absolute latencies of waves I and V once considering this study and the references of the equipment for age from 4 to 6 months, and for wave V from 7 to 9 months. When comparing gender and right and left ears, it has been observed lower latencies for female gender. The HHLR most shown was the permanence in ICU for more than 5 days, without difference between genders. It is relevant to say the importance of biological calibration.