Anesthesia for neurosurgery in the sitting position.
D000758:Anesthesia; D001927:Brain Diseases / Q000601:surgery*; D004618:Embolism, Air / Q000628:therapy*; D006801:Humans; D007024:Hypotension, Orthostatic / Q000628:therapy*; D009493:Neurosurgery / Q000009:adverse effects