[Effects of cervical epidural block on the blood flow of the vertebral artery and common carotid artery].
D000368:Aged; D000767:Anesthesia, Epidural / Q000009:adverse effects*; D001794:Blood Pressure; D002339:Carotid Arteries / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012039:Regional Blood Flow; D013564:Sympathetic Nervous System / Q000502:physiology; D014711:Vertebral Artery / Q000502:physiology*