Epidural morphin , at the present, is very useful and popular analgesic method during intraoperative and postoperative period. The treatment of pain. The postoperative pain is considered as typical acute pain. There are many methods of treatment of postoperative pain. For the postoperative pain relief, we have several methods.
Epidural analgesia is one of the very popular and useful methods.
Recently, the concept of pre-emptive analgesia and patient controlled analgesia is considered to be very important. Especially, pain sensation makes a kind of memory substances which makes a long duration of pain. Therefore, the concept of pre-emptive analgesia is very important. Because preemptive analgesia prevents the production of memory substances in the spinal cord and supraspinal level. Very popular method for the preemptive analgesia is epidural analgesia which gets a analgesic effect with local anaesthetics before the start of surgical procedures.