Journal Article

Comparison of different quantitative sensory testing methods during remifentanil infusion in volunteers

B. Gustorff, K. H. Hoerauf, P. Lierz and H. G. Kress

in BJA: British Journal of Anaesthesia

Published on behalf of the British Journal of Anaesthesia

Volume 91, issue 2, pages 203-208
Published in print August 2003 | ISSN: 0007-0912
Published online August 2003 | e-ISSN: 1471-6771 | DOI: https://dx.doi.org/10.1093/bja/aeg161
Comparison of different quantitative sensory testing methods during remifentanil infusion in volunteers

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Background. The aim of this study was to compare thermal and current sensory testing stimuli with respect to opioid responsiveness.

Methods. Eighteen healthy volunteers were randomized in a placebo‐controlled, double‐blind crossover study to receive an infusion of remifentanil 0.08 µg kg–1 min–1 or saline for 40 min. Test procedures included determination of pain perception thresholds (PPT) and pain tolerance thresholds (PTT) to heat, cold, and current at 5, 250 and 2000 Hz, at baseline and at the end of the infusion.

Results. Both current at 5 Hz (PPT 3.69 (sd 2.48) mA vs 2.01 (1.52) mA; PTT 6.42 (2.79) mA vs 3.63 (2.31) mA; P<0.001) and 250 Hz (PPT 4.31 (2.42) mA vs 2.89 (1.57) mA; PTT 7.08 (2.68) mA vs 4.81 (2.42) mA; P<0.001) and heat (PPT 47.4 (2.7)°C vs 45.2 (3)°C; PTT 51.1 (1.8)°C vs 49.7 (1.8)°C; P<0.05) detected a significant analgesic effect of remifentanil compared with placebo. No analgesic effect was shown on cold or current at 2000 Hz. The magnitude of responsiveness of current stimuli at 5 Hz and 250 Hz was superior to heat stimuli.

Conclusion. Both current (5 and 250 Hz) and heat sensory testing detected a significant analgesic effect of a remifentanil infusion compared with saline. There was more response to current testing.

Br J Anaesth 2003; 91: 203–8

Keywords: Keywords: analgesics opioid; pain, experimental

Journal Article.  3089 words.  Illustrated.

Subjects: Anaesthetics

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