Abstract
ABR and EEG were studied in 32 cases of acute anoxia. The ABR showed wave I to wave V in 19 cases and only wave I or no response in 13 cases. However, the EEG was isoelectric in 18 out of 25 cases. The acid-base equilibrium of the cases was inclined to acidosis; therefore, the effect of acidosis on EEG and disturbance of the brain tissue due to anoxic state were suspected. As the effect on the brain stem, a direct effect and secondary effect or brain ischemia arising from increased intra-cranial pressure and a subsequent fall in the brain perfusion pressure were suggested.
