Abstract
Objectives: Report the results of 3 years of Universal Neonatal Hearing Screening (UNHS) at the Neonatal Intensive Care Unit (NICU), CHULC; identify cases of delayed auditory pathway maturation. Study design: Retrospective observational. Methods: UNHS data from NICU newborns, admitted for ≥ 5 days, during 3 years were retrieved and analyzed. NHS results were classified as following: (1) “pass” when both ears for both the a-TEOAE (automated transiente-ecoked otoacoustic emissions) and the a-ABR (autoated auditory brainstem response) protocol resulted as “pass”; (2) “fail” when one ear, at either one of the two performed tests resulted as “fail”; (3) “missing” when the newborns were not tested. Results: 75.3% resulted as “pass”, 19.7% “fail” and 5% as “missing”. From “fail group”, 58.7% resulted as “pass”, 25.3% as “fail” and 16% “missing”. Among those, 10.5% 1) wave V identifiable over 30dB nHL; and 2) a bilateral wave V identifiable within 30dB nHL, in a following clinical ABR test. These group were defined to have an delayed auditory pathway maturation. Conclusions: A delay of the auditory pathway maturation has been hypothesised in 2 out of 380 (0.53%).
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