Zhang, Hui Effect of ultrasound-guided lumbar plexus block on emergence agitation in children undergoing hip surgery: study protocol for a randomized controlled trial. [electronic resource] - Trials Jan 2019 - 22 p. digital Publication Type: Clinical Trial Protocol; Journal Article ISSN: 1745-6215 Standard No.: 10.1186/s13063-018-3140-3 doi Subjects--Topical Terms: ChildChild, PreschoolData Interpretation, StatisticalEmergence Delirium--prevention & controlHip--surgeryHumansInfantLumbosacral PlexusNerve Block--methodsProspective StudiesRandomized Controlled Trials as TopicResearch DesignUltrasonography, Interventional