OBJECTIVE: To determine the prevalence of hearing loss and to analyze the results of
newborn hearing screening and audiological diagnosis in private health care
systems. METHODS Cross-sectional and retrospective study in a database of newborn hearing
screening performed by a private clinic in neonates born in private
hospitals of Porto Velho, Rondônia, Northern Brazil. The screening results,
the risk for hearing loss, the risk indicators for hearing loss and the
diagnosis were descriptively analyzed. Newborns cared in rooming in with
their mothers were compared to those admitted to the Intensive Care Unit
regarding risk factors for hearing loss. RESULTS: Among 1,146 (100%) enrolled newborns, 1,064 (92.8%) passed and 82 (7.2%)
failed the hearing screening. Among all screened neonates, 1,063 (92.8%)
were cared in rooming and 83 (7.2%) needed intensive care; 986 (86.0%) were
considered at low risk and 160 (14.0%) at high risk for hearing problems. Of
the 160 patients identified as having high risk for hearing loss, 83 (37.7%)
were admitted to an hospitalized in the Intensive Care Unit, 76 (34.5%) used
ototoxic drugs and 38 (17.2%) had a family history of hearing loss in
childhood. Hearing loss was diagnosed in two patients (0.2% of the screened
sample). CONCLUSIONS: The prevalence of hearing loss in newborns from private hospitals was two
cases per 1,000 evaluated patients. The use of ototoxic drugs, admission to
Intensive Care Unit and family history of hearing loss were the most common
risk factors for hearing loss in the studied population.
Newborns of mothers treated for malaria in pregnancy had a prevalence of fail in hearing screening at 6.7% and 5.64 higher chances to fail than newborns of untreated mothers.
Wi th the universal hearing screening we can prevent auditory disorders in children.
Aim:To characterize the program of neonatal auditory screening into a population of neonates.Materials and Methods: longitudinal cohort study. We surveyed the clinic's database on neonatal auditory screening in the city of Porto Velho, Rondônia.Results: Among the 6,889 newborns in the database, 5,700 (82.7%) passed and 1,189 (17.3%) failed the first screening. Of the group which failed 900 (75.7 %) returned for retesting. Among these, 15 (0.22 %) newborns had hearing loss confirmed. The most prevalent was neural hearing loss with 46.7% confirmed cases; they had hyperbilirubinemia as the most prevalent risk factor.Conclusion: hyperbilirubinemia was the most prevalent risk factor found in the group of hearing impaired children. The prevalence of hearing loss was of 2 in 1,000 newborns. It is important to highlight the relevant association between neural hearing loss caused by hyperbilirubinemia and sensorineural hearing loss of unknown causes. Braz J Otorhinolaryngol. 2010;76(5):605-10.
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