Hutschala, D Clonidine added to bupivacaine enhances and prolongs analgesia after brachial plexus block via a local mechanism in healthy volunteers. [electronic resource] - European journal of anaesthesiology Mar 2004 - 198-204 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0265-0215 Standard No.: 10.1017/s0265021504003060 doi Subjects--Topical Terms: AdultAnalgesics--administration & dosageAnesthetics, Local--administration & dosageBlood Pressure--drug effectsBrachial PlexusBupivacaine--administration & dosageClonidine--administration & dosageCross-Over StudiesDouble-Blind MethodDrug CombinationsFemaleHeart Rate--drug effectsHumansInjections, IntramuscularMaleMedian Nerve--drug effectsNerve BlockPain--prevention & controlRadial Nerve--drug effectsTime FactorsUlnar Nerve--drug effects