Spinal anaesthesia is the most commonly used regional
anaesthetic technique. Local anaesthetic agents used for this
purpose provide good intraoperative analgesia. However,
they provide a very limited postoperative duration of action.
In order to overcome this problem and to maximise the
duration of anaesthesia-analgesia, many adjuvants, such as
intrathecal opioids and non-opioids, have increasingly been
tried in the last two decades to relieve postoperative pain.
Aims & Objectives
Bupivacaine when used alone produces analgesia for
2.5 to 3 hours, making it unsuitable in cases where the
duration of surgery is longer and in cases which require
further analgesia during post-operative period. Present study
is intended to evaluate the effect of addition of intrathecal
midazolam to bupivacaine to prolong the post-operative