J Med Assoc Thai 2002; 85 (9):858

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Anesthetic Pain Management in Siriraj Hospial : A Retrospective Review
Chaudakshetrin P Mail, Ketuman P

Neural blockade has been used as the single method to anesthetize a part of the body or
used in combination with general anesthesia to lessen perioperative pain. Currently, nerve blocks are
used for diagnostic, prognostic, therapeutic and prophylactic proposes for management of chronic,
acute and cancer pain in a Pain Clinic. Reviewing the records of the 3,349 patients at Siriraj Pain
Clinic, we found 2,662 and 687 cases had chronic and acute pain problems respectively, and only
646 patients were treated with anesthetic interventions during 1990 to 1998. They consisted of 317
male and 329 female. The techniques included stellate ganglion block, paravertebral nerve block,
celiac plexus block, hypogastric plexus block, mesenteric plexus block, sacral nerve block, epidural
steroid, lumbar sympathectomy, first and second thoracic sympatholysis, facet joints injection,
sacroiliac joint injection, intravenous regional block with guanethidine or ketanserin, continuous
opioid infusion, intravenous lidocaine infusion, and a phentolamine test. The common problems of
pain included brachial plexus injury, chronic spinal pain, herpetic neuralgia, ischemic pain, central
post-stroke pain, and causalgia. This retrospective review showed that 38 per cent of them reported
50 per cent pain relief with temporary effect. 34 per cent experienced good and satisfactory pain
relief while 9 per cent reported excellent pain relief. 17 per cent did not gain benefit from any tech-
nique of pain relief and about 2 per cent could not be evaluated due to they did not return for
follow-up. One serious complication after thoracic sympatholysis was brachial plexus injury. The
neural blockade is proven to be one of the useful adjunct in the management of chronic pain but the
selection of the technique is subjected to its critical appraisal.
Key word : Chronic Pain, Neural Blockade

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