Does hyperventilation-induced hypocapnia change the pattern of electroencephalographic bicoherence growth during sevoflurane anaesthesia?
Hypocapnia enlarged bicoherence growth in the delta- frequency range, suggesting the contribution of subcortical oscillating mechanisms in regulating EEG during hyperventilation.
These outcomes do not support the prevailing surgical recommendation and dogma that vagotomy should always be accompanied by a drainage procedure. Furthermore, these outcomes would suggest that it is misleading to ascribe inadvertent vagotomy as the cause of the bloating, diarrhea, and delayed gastric emptying that may occasionally be reported by patients after difficult esophageal dissections.