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The effects of unilateral spinal anaesthesia: 2 ml, 1.5 ml and 1 ml 0.5% hyperbaric bupivacaine for surgery on lower extremity
(1997) Tok D.; Turhanoglu S.; Ozylmaz M.A.; Bayhan N.; Akca T.
The quality of anaesthesia and the haemodynamic effects of unilateral spinal block was evaluated in fifty one healthy patients undergoing lower limb surgery. The patients were randomly divided into three groups to receive 2 mL (group I), 1.5 mL (group II) or 1 mL (group III) of 0.5% hyperbaric bupivacaine via the subarachnoid route in the lateral decubitus position. The sensory and motor block were assessed and compared between the upper and lower parts of the body in each group when patients were still in the lateral decubitus position. The sensory and motor block was more profound at the lower parts of the body in each group (p < 0.05) and motor block was found to be more intensive in the upper parts in group I were compared to groups II and III. Significant haemodynamic changes were not observed in any groups during the study (p > 0.05). We conclude that unilateral spinal anaesthesia with low dose 0.5% hyperbaric bupivacaine provides satisfactory anaesthesia and haemodynamic stability.