SciELO - Scientific Electronic Library Online

 
vol.19 issue3Influence of temporal aspects in auditory temporal processing testsRelationship between the severity of temporomandibular disorder and voice author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Pró-Fono Revista de Atualização Científica

Print version ISSN 0104-5687

Abstract

PEREIRA, Priscila Karla Santana; MARTINS, Adriana de Souza; VIEIRA, Márcia Ribeiro  and  AZEVEDO, Marisa Frasson de. Newborn hearing screening program: association between hearing loss and risk factors. Pró-Fono R. Atual. Cient. [online]. 2007, vol.19, n.3, pp. 267-278. ISSN 0104-5687.  http://dx.doi.org/10.1590/S0104-56872007000300005.

BACKGROUND: hearing loss in newborns. Aim: to verify the prevalence of auditory alterations in newborns of Hospital São Paulo (hospital), observing if there are any correlations with the following variables: birth weight, gestational age, relation weight/gestational age and risk factors for hearing loss. METHOD: A retrospective analysis of the hospital records of 1696 newborns; 648 records of preterm infants and 1048 records of infants born at term. All of the infants had been submitted to an auditory evaluation consisting of: Transient Otoacoustic Emissions, investigation of the cochleal-palpebral reflexes and acoustic imittance tests, identifying the type and level of hearing loss. RESULTS: sensorineural hearing loss was identified in .82% of the infants who were born at term and in 3.1% of the preterm infants - with a statistically significant difference. Conductive hearing loss was the most frequent type of hearing loss in both groups, occurring in 14.6% of the term infants and in 16.3% of the preterm infants. Alteration of the central auditory system was considered as a possible diagnosis for 5.8% of the preterm infants and for 3.3% of the term infants. For the group of infants who were born at term, a significant correlation was observed between failure in the hearing screening test and the presence of risk factors such as family history and presence of a syndrome - the child who presented a syndrome had 37 times more chances of failing in the hearing screening test and seven times more chances of failing in the right ear when there was a family history for hearing loss. The lower the gestational age (< 30 weeks) and birth weight (< 1500g), the higher the chances of failing in the hearing screening test (3 times more). CONCLUSION: hearing loss had a higher occurrence in preterm infants who remained in the ICU. Gestational age and birth weight were important variables related to the possibility of failure in the hearing screening test. A correlation was observed between the presence of a syndrome and sensorineural hearing loss in infants who were born at term.

Keywords : Hearing Loss; Screning; Risk Factors; Prevalence.

        · abstract in Portuguese     · text in English | Portuguese     · pdf in English | Portuguese