Uyar M.Ozyar B.Ugur G.Uyar M.Mert S.Koca U.2019-10-272019-10-2719961016-51501016-5150https://hdl.handle.net/11454/23888The effect of meperidine and clonidine on sensory blockade of bupivacaine spinal anaesthesia in 45 ASA I-II patients scheduled for urological surgery. All patients received 3 mL 0.5 % plain bupivacaine. In the first group 1 mL (= 0.15 mg) meperidine and in the third group 1 mL 0.9 % NaCl was added to the local anaesthetic solution. No significant difference was observed in maximal sensory level and onset time among three groups. The mean time to two-segment regression and regression to L2 segment was significantly longer in meperidine and clonidine groups compared to control group (p<0.05). Adding of clonidine and meperidine in given doses to 15 mg plain bupivacaine significantly prolonged the duration of spinal anaesthesia and produced similar effects.trinfo:eu-repo/semantics/closedAccessClonidineMeperidineSensory blockadeSpinal anesthesiaArticle243126129N/A