Thoracic epidural infusions for post-thoracotomy pain: a comparison of fentanyl-bupivacaine mixtures vs. fentanyl alone.
A randomised double-blind clinical trial was conducted on 106 patients scheduled for pulmonary resection. Patients received an epidural infusion containing 0.1%, 0.2% bupivacaine or saline in combination with fentanyl 10 microgram.ml -1. Adequacy of analgesia was assessed at rest and during movement over 24 h. Analgesic efficacy was assessed using visual analogue scores and an observer/verbal ranking scale. Pain scores were higher in the fentanyl-only group at the 2 h assessment (p < 0.05). Otherwise, there were no between-group differences in pain scores or in the total amounts of epidural solution used. All patients received continuous haemodynamic monitoring. There were no between-group differences in the number of episodes of hypotension or in the number of interventions for hypotension. However, the use of intra-operative vasopressor and the incidence of temporary neurological complications was higher in the 0.2% bupivacaine group (p < 0.05). We conclude that, in the early postoperative period, the addition of bupivacaine 0.1% improves fentanyl epidural analgesia in patients undergoing lung resection and is not associated with the disadvantages seen with the addition of bupivacaine 0.2%.
Mahon
S V
SV
Lecturer in Anaesthesia, Cardiothoracic Centre, Thomas Drive, Liverpool L14 3PE, UK.
Berry
P D
PD
Jackson
M
M
Russell
G N
GN
Pennefather
S H
SH
D000328:Adult; D000368:Aged; D015360:Analgesia, Epidural; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D000779:Anesthetics, Local / Q000008:administration & dosage*; D002045:Bupivacaine / Q000008:administration & dosage*; D004311:Double-Blind Method; D005260:Female; D005283:Fentanyl / Q000008:administration & dosage*; D006801:Humans; D007022:Hypotension; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D010149:Postoperative Pain / Q000517:prevention & control*; D011446:Prospective Studies; D013908:Thoracotomy / Q000009:adverse effects*
D000701:Analgesics, Opioid; D000779:Anesthetics, Local; D005283:Fentanyl; D002045:Bupivacaine