Transient neonatal hypothyroxinemia and the auditory brainstem evoked response.
Ten premature infants with low serum thyroxine levels (less than 84 nmol/L) were compared with 10 biochemically euthyroid infants to determine whether hypothyroxinemia in such infants can lead to alterations in the auditory pathway. The auditory pathway was studied between 6 and 11 wk of life by analyzing brainstem evoked potentials elicited by a 10/s, 75 dB above normal adult hearing level click stimulus presented at the infant's ears. Peak latencies of components I, III, and V and interpeak latencies I-III, III-V, and I-V did not yield statistically significant differences between groups. The present study indicates that untreated neonatal hypothyroxinemia does not lead to abnormalities of auditory brainstem evoked response.
Kohelet
D
D
Department of Neonatology, Assaf Harofeh Medical Center, Zerifin, Israel.
Arbel
E
E
Goldberg
M
M
Arlazzoroff
A
A
D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D005260:Female; D006801:Humans; D007037:Hypothyroidism / Q000097:blood / Q000503:physiopathology; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D013974:Thyroxine / Q000097:blood* / Q000172:deficiency
D013974:Thyroxine