Resuscitation after severe hypoxia in a young child: temporary isoelectric EEG and loss of BAEP components.

Abstract

EEG and multimodality evoked potentials are currently used to ascertain brain death. We have observed electrocerebral silence (ECS) and loss of wave IV and V in BAEP in a 28-month-old child, 2 h after resuscitation from severe hypoxia, followed by reappearance of EEG activity and of waves IV and V (latencies and amplitudes within normal range) 18 h later. Temporary loss of EEG activity has been observed occasionally, while rapid reoccurrence of BAEP waves IV and V was unexpected and in contrast to the common observation, that rostro-caudal loss of BAEP waves is irreversible. This observation suggests that temporary loss of BAEP waves IV and V may occur and that caution is necessary in the interpretation of BAEP recorded immediately after a resuscitation.