Birth asphyxia. I. Measurement of visual evoked potential (VEP) in the healthy fetus and newborn lamb.

Abstract:

:The visual evoked potential (VEP) of five healthy, near-term exteriorized fetal lambs was compared with the VEP obtained from the same animals during the first hour after ventilation. Characteristics of the individual wave components and their relationship to blood pressure, heart rate, and arterial blood gas measurements concomitantly obtained were examined. Results show that the VEP of the healthy fetus is a stable, reproducible signal consisting of four basic components, and that the latencies (msec) and the amplitude (mu V) of the individual components of the VEP are similar to those of the newborn. In two related experiments, fetal asphyxia of unknown duration was encountered during fetal exteriorization an instrumentation. In the first case, neonatal, acidosis persisted despite aggressive resuscitation efforts and was accompanied by an atypical VEP. In the second case, the neonatal VEP obtained after 15 min of resuscitation was markedly depressed despite restoration of acid-base balance but gradually recovered during the remainder of the 1-hr newborn period. In conclusion, the VEP is a reproducible measure of cortical function in the healthy fetus and neonate and may reflect the acute status of cerebral function during fetal asphyxia and neonatal resuscitation.

journal_name

Pediatr Res

journal_title

Pediatric research

authors

Woods JR Jr,Coppes V,Brooks DE,Knowles PJ,Freeman M,Parisi V,Omara P,McCarty GE

doi

10.1203/00006450-198111000-00009

subject

Has Abstract

pub_date

1981-11-01 00:00:00

pages

1429-32

issue

11

eissn

0031-3998

issn

1530-0447

journal_volume

15

pub_type

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