González-Amaro C, Reyna-Barrientos M, Hernández-Sierra F, Suárez-Llanas B, Torres-Carreón F, Escalante-Padrón F

Language: Spanish
References: 22
Page: 80-83
PDF size: 126.92 Kb.

ABSTRACT

Hearing loss in newborns (NB) has a frequency of 1-3/1,000, but is 20 times more frequent in graduates of Neonatal Intensive Care Units (NICU), so their detection is a priority.
Objective: To determine the sensitivity, specificity and predictive values of otoacoustic emissions (OAE) to detect hearing loss in newborns at high risk of NICU graduates.
Methodology: Diagnostic test study. Neonatal hearing screening was performed (TAN) in a blinded fashion with OAE, 134 RN with risk factors at hospital discharge, and confirmatory test, auditory brainstem evoked potentials (ABEP) as a gold standard, at 3 months of corrected age.
Results: Hearing loss was found in 19 NB (14.17%), of these, 6 (4.47%) with bilateral profound hearing impairment. The sensitivity of the EOA was 19.23% (95%, CI 4.08 to 34.38); specificity of 98.74% (95%, CI 97.32 to 100); positive predictive value 62.50% (95%, CI 28.95 to 96.05) and negative predictive value 91.80% (95%, CI 88.44 to 95.16). Concordance of measurements was 100% with kappa.
Conclusions: The incidence of hearing loss of varying degrees was higher than that reported in the population of NICU graduates. In the population of graduates NICU infants studied the OAE obtained a very low sensitivity (19.23%) to detect hearing loss with a high rate (80.77) of false negatives. With these results it is confirmed that our population of Mexican infants with risk factors using the OAE as a single screening test in infants at high risk, because of the high possibility of false negatives and possible auditory neuropathy is not recommended. However NB healthy without risk factors, the OAE is still a good screening tool because of its high specificity and negative predictive value.

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