title: Marked latency change of auditory brainstem response in preterm infants in the early postnatal period.
abstract: In order to evaluate the influence of extrauterine life on auditory brainstem response in neonates, we performed serial ABR recordings twice a week in 10 preterm infants. A marked decrease of I-III interpeak latency was observed in 7 infants during the first 2 or 3 weeks after birth. Wave I latency also remarkably reduced during this period in 5. These findings were related not to the conceptional age but to the extrauterine age. In 2 infants III-V interpeak latency increased during the first 1 or 2 weeks after birth, and the rate of latency increase seemed to be inversely proportional to that of decrease of I-III interpeak latency.
authors.affiliation: Division of Pediatrics, Toyota Memorial Hospital, Aichi, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Yamamoto
authors.forename: K
authors.initials: K
authors.lastname: Watanabe
authors.forename: J
authors.initials: J
authors.lastname: Sugiura
authors.forename: J
authors.initials: J
authors.lastname: Okada
authors.forename: H
authors.initials: H
authors.lastname: Nagae
authors.forename: Y
authors.initials: Y
authors.lastname: Fujimoto
mesh_terms: D000375:Aging; D001933:Brain Stem / Q000254:growth & development / Q000502:physiology*; D005072:Evoked Potentials, Auditory; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature / Q000502:physiology*; D008137:Longitudinal Studies