[Relationship between regional cerebrovascular oxygen saturation and jugular bulb oxygen saturation during carotid endarterectomy].

Background: Carotid artery cross-clamping ischemia during carotid endarterectomy (CEA) sometimes causes perioperative neurological deficits. Therefore it is important to asses the cerebral oxygen supply/demand relationship during CEA. The aim of this study is to examine the relationship between two monitoring results in CEA.

[Effect of propofol on visual evoked potentials during neurosurgery].

Background: Evoked potentials are used to monitor the central nervous system during neurosurgery and it is well known that they are affected by the depth of anesthesia. Many studies on the evoked potential like somatosensory evoked potential (SEP) and auditory brain stem response (ABR) are reported, but studies on visual evoked potential (VEP) are few. We investigated the influence of the propofol concentration on VEP in neurosurgical patients.

[Mouth opening in relation to the craniocervical position during induction of general anesthesia].

Background: Decreased mouth opening and limited neck mobility sometimes make direct laryngoscopy or tracheal intubation difficult and compromise the safety in establishing the airway during induction of general anesthesia. Recent report indicated that mouth opening was related to the craniocervical position in awake subjects. The query about whether the neck position modulate the mouth opening during anesthetic induction under paralyzed condition is not clarified.

[Evaluation of facial nerve palsy with electrogustometry and stapedial reflex].

Background: To clarify the prognosis of facial nerve palsy, electroneuronal tests, including electrogustometry and stapedial reflex, have been utilized. But, the relationship among these tests and patients' prognosis is not clear.

Methods: Sixty five patients with peripheral facial nerve palsy were investigated.

[Effects of perfusion pressure on cerebral blood flow and oxygenation during normothermic cardiopulmonary bypass].

Background: Central nervous system dysfunction after cardiopulmonary bypass (CPB) is an important cause of morbidity and mortality after cardiac surgery. Perfusion pressure (PP) during CPB could be one of the important determinants of cerebral blood flow (CBF). The objective of the present study was to determine the effect of PP on CBF and cerebral oxgenation during normothermic CPB.