Epidural ropivacaine and sufentanil.
D000577:Amides; D015360:Analgesia, Epidural / Q000379:methods*; D016058:Analgesia, Patient-Controlled / Q000379:methods; D000701:Analgesics, Opioid / Q000627:therapeutic use; D006801:Humans; D007278:Injections, Spinal; D035002:Lower Extremity / Q000601:surgery; D010149:Postoperative Pain / Q000517:prevention & control*; D000077212:Ropivacaine; D017409:Sufentanil
D000577:Amides; D000701:Analgesics, Opioid; D000077212:Ropivacaine; D017409:Sufentanil