Gehling, M [Can the addition of clonidine improve the analgesic efficacy of low dose intrathecal morphine? A randomised double-blind trial]. [electronic resource] - Der Anaesthesist Mar 2003 - 204-9 p. digital Publication Type: Clinical Trial; English Abstract; Journal Article; Randomized Controlled Trial ISSN: 0003-2417 Standard No.: 10.1007/s00101-003-0459-1 doi Subjects--Topical Terms: Adrenergic alpha-Agonists--administration & dosageAgedAged, 80 and overAnalgesics, Opioid--administration & dosageDouble-Blind MethodDrug SynergismFemaleHumansInjections, SpinalMaleMiddle AgedMorphine--administration & dosageOrthopedic ProceduresPain, Postoperative--drug therapy