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Audiological features related to low weight, prematurity, anoxia/hipoxia and congenital infections of de neonatal hearing screening until audiological diagnostic

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Gabriele Libano de Souza
Total Authors: 1
Document type: Master's Dissertation
Press: Campinas, SP.
Institution: Universidade Estadual de Campinas (UNICAMP). Faculdade de Ciências Médicas
Defense date:
Examining board members:
Maria Francisca Colella Santos; Alessandra Spada Durante; Maria Cecilia Marconi Pinheiro Lima
Advisor: Maria Francisca Colella Santos

The objective of this study was to analyze the relationship between the risk factors for hearing loss and the results obtained in the hearing screening and the audiological diagnosis of infants who remained in the neonatal intensive care unit (NICU). Cross-sectional cohort study. The neonatal hearing screening (NHS) was performed in infants admitted to the NICU or intermediate care of CAISM / UNICAMP for at least 48 hours, from August 2012 to January 2014, through automated auditory brainstem response with click stimulus at 35 dB. NHS was performed before hospital discharge or it was booked if the infant had been transferred or left the hospital prior to NHS procedures. Information regarding the conditions of birth, and procedures performed during the period of hospitalization, were collected in the records of infants. Infant passed the hearing screening when responded to click the 35dB bilaterally. Only the infants who failed hearing screening and retest underwent audiological assessment, which consisted of auditory brainstem response, transient evoked otoacoustic emissions and tympanometry meansurement. The infants who passed in the hearing screening, but had risk indicator for hearing loss were referred to the auditory monitoring. Statistical analysis was performed using Chi-square test and Fisher's Exact Test, the level of significance was set at 0.05. The study was composed of 690 infants alive, these 84.64% held the hearing screening, the failure rate in screening was 3.42%. The sensorineural hearing loss was found in 0.34% of infants and the conductive type in 1.71% of cases. To analyze the association of the results of the tests and risk factors for hearing loss it was found p-value less than 0.05 to the following indicators: use of mechanical ventilation, craniofacial anomaly involving ear and temporal bone, and genetic syndrome that expressed hearing loss. The prevalence of hearing loss in the research was 2.05%. The risk factors: mechanical ventilation, craniofacial anomaly involving ear and temporal bone, and genetic syndrome that expressed hearing loss had significant influence on the outcome of hearing screening (AU)

FAPESP's process: 12/19845-8 - Audiological Features Related to Low Weight, Prematurity, Anoxia/Hypoxia and Congenital Infections: Of the Neonatal Hearing Screening until Audiological Diagnostic
Grantee:Gabriele Libano de Souza
Support Opportunities: Scholarships in Brazil - Master