A 39-year-old patient developed phantom pain after amputation of both
upper arms following a burn injury. The pain did not respond to naprox
en, morphine, carbamazepine, amitriptyline, calcitonin or transcutaneo
us electrical nerve stimulation (TENS). At the 39th postoperative day
an axillary catheter was placed on the right side. as well as an inter
scalene catheter on the left. Ropivacaine 0.2% was infused, starting w
ith a rate of 4 ml/h, that was increased to 6 ml/h during the subseque
nt 6 days. Within 20 min of catheter placement complete pain relief wa
s achieved. The patient did not need any other analgesics and remained
painfree for 7 months. Neither motor block, nor any other side effect
s occurred during the infusion of ropivacaine 0.2%. Thus, the patient
not only received analgesia, but also got an effective treatment of es
tablished phantom pain. A similar approach with bupivacaine may not ha
ve been feasible, because of the possibility of toxic side effects, Ro
pivacaine is a long-acting local anaesthetic which is less toxic than
bupivacaine and has the additional advantage of producing less motor-b
lockade in the concentration used, so the patient was able to move act
ively without experiencing any pain. (C) 1998 international Associatio
n for the Study of Pain. Published by Elsevier Science B.V.