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  • Title: Brain-stem auditory function in very preterm infants with chronic lung disease: delayed neural conduction.
    Author: Jiang ZD, Brosi DM, Wilkinson AR.
    Journal: Clin Neurophysiol; 2006 Jul; 117(7):1551-9. PubMed ID: 16759903.
    Abstract:
    OBJECTIVE: To examine brain-stem auditory function at term in very preterm infants who suffered chronic lung disease (CLD). METHODS: Brain-stem auditory evoked response (BAER) was recorded at term with clicks in 25 very preterm infants with CLD and no concomitant other major perinatal problems. RESULTS: Compared to those in normal term controls, BAER wave V latency and I-V and III-V interpeak intervals in the CLD infants increased significantly (ANOVA P<0.01-0.001). III-V/I-III interval ratio also increased significantly (P<0.01). The latencies of waves I and III did not differ significantly from the controls. However, no abnormalities were found in BAER wave amplitudes. These BAER findings, obtained at 21/s clicks, were also seen at the rates 51 and 91/s, although the increase in III-V interval tended to be more significant. Click rate-dependent changes in BAER variables in the CLD infants were generally similar to the controls, with slight differences. CONCLUSIONS: BAER components, mainly reflecting central auditory function, increased significantly. The increase in wave V latency and I-V interval is due to the increase in III-V interval. SIGNIFICANCE: Neural conduction in the more central portion of the brain-stem auditory pathway is delayed and thus brain-stem auditory function is impaired in CLD infants.
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