Conductive hearing loss in children with bronchopulmonary dysplasia: A longitudinal follow-up study in children aged between 6 and 24months
Received 31 October 2009; received in revised form 4 May 2010; accepted 5 May 2010.
Abstract
Aims
To determine the occurrence of isolated and recurrent episodes of conductive hearing loss (CHL) during the first two years of life in very low birth weight (VLBW) infants with and without bronchopulmonary dysplasia (BPD).
Study design, subjects and outcome measures
In a longitudinal clinical study, 187 children were evaluated at 6, 9, 12, 15 18 and 24months of age by visual reinforcement audiometry, tympanometry and auditory brain response system.
Results
Of the children with BPD, 54.5% presented with episodes of CHL, as opposed to 34.7% of the children without BPD. This difference was found to be statistically significant. The recurrent or persistent episodes were more frequent among children with BPD (25.7%) than among those without BPD (8.3%). The independent variables that contributed to this finding were small for gestational age and a 5min Apgar score.
Conclusions
Recurrent CHL episodes are more frequent among VLBW infants with BPD than among VLBW infants without BPD.
aDepartment of Ophthalmology, Otorhinolaryngology, and Head and Neck Surgery, School of Medicine of Ribeirão Preto-University of São Paulo, Ribeirão Preto, SP, Brazil
bDepartment of Neurology, Faculty of Medicine, São Paulo State University (UNESP), Botucatu, SP, Brazil
cDepartment of Pediatrics, Faculty of Medicine, São Paulo State University (UNESP), Botucatu, SP, Brazil
Corresponding author. Department of Ophthalmology, Otorhinolaryngology, and Head and Neck Surgery, School of Medicine of Ribeirão Preto-University of São Paulo, Av. Bandeirantes, 3900 — 14049-900, Ribeirão Preto, São Paulo, Brazil. Tel.: +55 16 3602 2523; fax: +55 16 3602 2860.
ABSTRACT