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Objective: To compare the block characteristics and haemodynamic stability of intrathecal Ropivacaine and Levobupivacaine with Fentanyl and Magnesium as adjuvants for lower abdominal surgeries. Method: Sixty patients of ASA grade I and II coming for elective lower abdominal surgeries under spinal anaesthesia were randomly allocated to two groups with 30 patients in each group. Group R received Isobaric Ropivacaine 0.75% -2.5ml + Fentanyl 20µ + Magnesium 50mg and Group L received Isobaric Levobuivacaine 0.75% 2.5ml + Fentanyl 20µ + Magnesium 50mg. Sensory and motor block characteristics were assessed by pin prick and modified Bromage scale respectively and observed haemodynamics were recorded. Results: Time to reach T10 dermatome was faster in group L (1.30±0.80mins) compared to group R (4.23±0.94mins). The onset of motor block was significantly earlier in group L (1.35±0.85mins) than group R (4.63±0.85mins). Duration of analgesia was similar in both the groups (p=0.929) but resolution of sensory and motor block was significantly earlier in Levobupivacaine group compared to Ropivacaine group (p<0.001). Conclusion: Time for onset and recovery of sensory and motor block is shorter with intrathecal Levobupivacaine in combination with Fentanyl and Magnesium as adjuvants than intrathecal Ropivacaine.

Comparative Study of Intrathecal Ropivacaine and Levobupivacaine With Fentanyl And Magnesium As Adjuvants For Lower Abdominal Surgeries