PEDIATRICS Vol. 71 No. 2 February 1983, pp. 257-261
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Language Development in a Group of Very Low-Birth-Weight Children Whose Postauricular Myogenic Response Was Tested in Infancy

Nan Holmes BSc, HonsMPhil1, M. J. Conway MSc1, L. Flood FRCS1, J. G. Fraser FRCS1, and Ann Stewart MBChB DCH1

1 From the Royal Ear Hospital and Departments of Paediatrics and of Medical Physics and Bioengineering, School of Medicine, University College, London

A new instrument for the detection of the postauricular myogenic (PAM) response was used to test the hearing of 106 infants weighing le1,500 g when they were aged 1 to 21 months. Eighty-eight infants showed a positive response at 60 dB hearing level (HL) (normal). The other 18 did not respond; four were found to have sensory neural hearing loss and another six had conductive loss due to secretory otitis media. Of the 106 children, 90 aged 2 years or more (mean 27 months) were living in the United Kingdom, and their language development was assessed. It was normal in 67/75 children whose PAM response had been normal in infancy. The remaining eight children with normal PAM responses in infancy, had language delay. All eight children had problems that were thought to account for the delay, including three with mental retardation, three with cerebral palsy, and two whose families did not speak English. Language development was normal in 11/15 children tested whose PAM responses had been found to be abnormal, including all six whose secretory otitis media had been diagnosed and treated at the time of the PAM test. Delay in language development was found in 3/4 children with sensory neural hearing loss who were available for testing and in one child with overall developmental delay. It is concluded that a positive PAM response at 60 dB HL in infancy indicated hearing adequate for the development of normal speech in otherwise normal children among a group of infants at high risk of hearing loss.

Key Words: hearing loss • language • low birth weight

Submitted on November 24, 1981
Accepted on May 6, 1982