[Extent of epidural anesthesia. 1. Downward spread].
D000328:Adult; D000368:Aged; D000767:Anesthesia, Epidural; D004576:Electromyography; D006801:Humans; D008619:Mepivacaine; D008875:Middle Aged; D012445:Sacrococcygeal Region
D008619:Mepivacaine