A Comparison of The Intrathecal Isobaric Levobupivacaine With Fentanyl And Hyperbaric Levobupivacaine With Fentanyl For Proximal Femoral Nailing Surgeries: A Prospective Randomised Double Blind Controlled Study

In this prospective randomized controlled study , block characterstics ,side effects  and hemodynamic effects will be studied between isobaric levobupivacaine and hyperbaric levobupivacaine injected intrathecally. Subarachnoid block is the most commonly used regional anesthesia technique in contemporary anesthesia practice. Motor block from subarachnoid anesthesia beyond the duration of surgery is undesirable, particularly in ambulatory setting,and this is the most important reason why subarachnoid block is not preferred in ambulatory setting.With introduction of levobupivacaine as pure S(-) enantiomer of bupivacaine which offers advantages of lower cardiotoxicity and neurotoxicity and shorter motor block duration,its use has widely increased in india.