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 ORIGINAL ARTICLE
Year : 2019  |  Volume : 21  |  Issue : 99  |  Page : 69--76

Does noise exposure during pregnancy affect neonatal hearing screening results?


1 Department of Otorhinolaryngology, Head and Neck Surgery, Trakya University Faculty of Medicine, Edirne, Turkey
2 Department of Audiology, Trakya University Faculty of Health Sciences, Edirne, Turkey
3 Department of Public Health, Trakya University Faculty of Medicine, Edirne, Turkey

Correspondence Address:
Selis Gülseven Guven
Department of Otorhinolaryngology, Head and Neck Surgery, Trakya University Faculty of Medicine, Edirne, 22030
Turkey
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/nah.NAH_18_19

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Objective: The aim is to investigate whether noise is effective on hearing screening tests of neonates born to mothers exposed to noise during pregnancy. Material and Method: Screening results of 2653 infants from the period of January 2013–May 2017 were evaluated. Transient Evoked Otoacoustic Emissions (TEOAE) and Auditory Brainstem Response (ABR) were used. Infants of 65 mothers exposed to noise (LAeq 80–85 dBA/8 hours/day) during pregnancy (Week ± SD; 32.58 ± 2.71) comprised the study group while the control group consisted of infants of 2588 mothers without noise exposure. Results: Among the 65 infants, 23 (35.4%) passed screening at the first emission test (OAE1); 34 (52.3%) at the second emission test (OAE2); 7 (10.8%) at the ABR stage, 1 (1.5%) infant was referred to a tertiary center. In the control group, 458 (17.7%) infants passed at OAE1; 1822 (70.4%) at OAE2; 289 (11.2%) at ABR stages, 19 (0.7%) infants were referred to a tertiary center. The rate of infants that passed screening at OAE1 in the study group was high (P = 0.00001). Sixty-four (98.46%) infants in the study group and 2569 (99.26%) infants in the control group passed the tests. The difference between the two groups was not significant, indicating that exposure to noise during pregnancy had no unfavorable effects on auditory functions (P = 0.392). Conclusion: Unfavorable effect of noise exposure during pregnancy was not observed on auditory functions of the infants. The higher rate of infants that passed the screening test at OAE1 stage in the study group raised the question, “Does the exposure of the noise at exposure action levels (80–85 dB A) during pregnancy contribute to auditory maturation of fetus?”






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