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Algorithm of hearing monitoring of children with congenital heart disease

Congenital heart disease (CHD) is one of the most common types of birth defect. Often newborn hearing screening is not performed for infants with congenital heart disease because of serious health problems at birth. Hearing loss in children with CHD may have late onset due to different stages of CHD treatment. The monitoring of the auditory function is required for early identification of hearing loss in children with CHD, however algorithm of follow-up assessment is not currently defined. 
Objective – estimation of prevalence, types and time of hearing loss onset in children with congenital heart disease and development a follow-up assessment for CHD children. 
Results. 148 children with congenital heart disease have been evaluated with auditory brainstem response testing, otoacoustic emissions, impedancemetry, behavioral hearing tests. The patients ranged in age from 7 days to 6 years. 55 children had hearing loss: 28 children with conductive hearing loss and 27 children with sensorineural hearing loss, 2 of them with auditory neuropathy. 6 children had late onset sensorineural hearing loss. The age of delayed hearing loss identification ranged from 4 months to 5 years. 
Conclusion. Children with CHD require long-term monitoring of the auditory function; an algorithm of follow-up assessment for children with congenital heart disease is proposed. Audiological assessment in children with CHD should include auditory brainstem response registration for auditory neuropathy identification.