Xu, Deming Effect of dexmedetomidine added to ropivicaine for caudal anesthesia in patients undergoing hemorrhoidectomy: A prospective randomized controlled trial. [electronic resource] - Medicine Aug 2018 - e11731 p. digital Publication Type: Journal Article; Randomized Controlled Trial ISSN: 1536-5964 Standard No.: 10.1097/MD.0000000000011731 doi Subjects--Topical Terms: AdultAmides--administration & dosageAnalgesics, Non-Narcotic--administration & dosageAnesthesia, CaudalAnesthetics, Local--administration & dosageDexmedetomidine--administration & dosageDrug Therapy, CombinationFemaleHemorrhoidectomyHumansMaleMiddle AgedPain, Postoperative--prevention & controlProspective StudiesRopivacaineTreatment Outcome