Toe skin temperature as a guide to epidural anaesthesia dosing

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Abstract

To determine the time for additional epidural anaesthesia, skin temperature of the big toe was evaluated in 50 patients undergoing mastectomy. Epidural catheters were placed at or near the T5-6 intervertebral space and 12 ml, lidocaine 1.5% with 1:200,000 epinephrine were injected. When the skin temperature, which had increased following epidural anaesthesia, decreased by 0.3° C without an increase of systolic arterial blood pressure (ABP) of more than 20%, 8 ml lidocaine 1.5% were injected. If the skin temperature increased, the monitor was judged to have been useful. When ABP increased > 20% without a decrease of skin temperature, the monitor was judged not to have been useful. Monitoring of toe skin temperature was useful in 39 patients (78%) in estimating the time for the first additional dose of epidural anaesthetic. First, second and third intervals between injection were 96.5 ± 21.0 (n = 39), 69.7 ± 14.2 (n = 35) and 50.1 ± 12.2 min (n = 7), respectively. We conclude that, when epidural puncture is performed at upper thoracic levels, toe skin temperature can be a useful monitor to judge the time for additional anaesthetic. © 1994 Canadian Anesthesiologists.

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APA

Sato, S., Akiyoshi, Y., Ashimura, H., Nishijima, Y., Okubo, N., & Takahashi, H. (1994). Toe skin temperature as a guide to epidural anaesthesia dosing. Canadian Journal of Anaesthesia, 41(3), 232–235. https://doi.org/10.1007/BF03009836

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