Spinal anaesthesia remains a popular technique of choice for performing surgeries on abdomen, pelvis and lower limbs. It has fast onset of action and provides effective sensory and motor blockade. Spinal anaesthesia is routinely performed by administration of 0.5% bupivacaine. Aims: Aim of the study was to compare onset and duration of sensory and motor blockade between intrathecal isobaric 0.5% bupivacaine and isobaric 0.5% levobupivacaine. Materials and methods: 80 patients between the age

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... up of 18-65 years of either gender, belonging to ASA Grade I and II scheduled for elective infraumbilical surgeries were enrolled in the study. They were randomised into 2 groups. Group B received intrathecal 3.2 ml of 0.5 % isobaric bupivacaine and Group L received intrathecal 3.2 ml of 0.5% isobaric levobupivacaine. Onset and duration of sensory and motor blockage were compared between the two groups.