BJA Advance Access published online on December 9, 2005
British Journal of Anaesthesia, doi:10.1093/bja/aei292
1 Department of Anaesthesiology, Kochi Medical School, Oko-Cho, Nankoku City, Kochi, Japan
* To whom correspondence should be addressed. Background. Although local anaesthesia for knee arthroscopy is a well-documented procedure, arthroscopy under local anaesthesia is often interrupted because of intolerable discomfort and pain. Warming local anaesthetic solutions may increase its anaesthetic effect. We tested whether intra-articular injection of warmed lidocaine solution could improve intraoperative anaesthetic and postoperative analgesic conditions. Methods. Patients in the warmed group received 20 ml warmed (40°C) lidocaine 1% intra-articularly 20 min before surgery. The patients in the control group received 20 ml room-temperature (25°C) lidocaine 1% intra-articularly 20 min before surgery. During surgery, the patients reported pain on a visual analogue scale (VAS). Results. The median VAS pain score was 1.5 (range, 0.0-3.0) in the warmed lidocaine group and 5.0 (4.0-8.0) in the control group (P<0.001). The median intra- and postoperative analgesic requirements in the control group were significantly greater than that in the warmed group. Conclusion. Warmed lidocaine injected intra-articularly provides improved intraoperative anaesthetic and postoperative analgesic conditions for patients undergoing knee arthroscopy. Read all E-letters
Accepted October 24, 2005
Clinical Investigation
Intra-articular injection of warmed lidocaine improves intraoperative anaesthetic and postoperative analgesic conditions
Y. -C. P. Arai 1 *,
M. Ikeuchi 2,
K. Fukunaga 1,
W. Ueda 3,
T. Kimura 4,
and
T. Komatsu 5
2 Department of Orthopaedics, Kochi Medical School, Oko-Cho, Nankoku City, Kochi, Japan
3 Department of Anaesthesiology, Clinical Physiology and Pharmacology, School of Nursing, Kochi Medical School, Oko-Cho, Nankoku City, Kochi, Japan
4 Multidisciplinary Pain Centre, Aichi Medical University, School of Medicine, 21 Karimata, Nagakutecho, Aichigun, Aichi, 480-1195, Japan
5 Department of Anaesthesiology, Aichi Medical University, School of Medicine, 21 Karimata, Nagakutecho, Aichigun, Aichi, 480-1195, Japan
Y. -C. P. Arai, E-mail: arainon{at}aichi-med-u.ac.jp
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