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Effect of temperature-responsive hydrogel on femoral and sciatic nerve blocks using bupivacaine in Beagle dogs

Cited 1 time in Web of Science Cited 2 time in Scopus

Kim, Jiyoung; Kim, Dalhae; Shin, Donghwi; Sung, Taehoon; Rhee, Suehyung; Kim, Minha; Nam, Changhun; Lee, Inhyung; Son, Won-Gyun

Issue Date
Veterinary Medicine and Science, Vol.9 No.1, pp.91-97
ObjectivesTo compare the duration of regional anesthesia of the pelvic limb using bupivacaine with and without a temperature-responsive hydrogel (TRH) in dogs. MethodsUnder anesthesia using medetomidine (10 mu g center dot kg(-1)), alfaxalone (2 mg center dot kg(-1)), and isoflurane, seven healthy male Beagles received four injections of 0.5% bupivacaine (1 mg center dot kg(-1) with 5 mu g center dot ml(-1) epinephrine) to block the femoral and sciatic nerves bilaterally via ultrasound with nerve stimulation guidance. Bupivacaine was used on one pelvic limb (Bup treatment), and bupivacaine with TRH was used on the contralateral limb (Bup-TRH treatment). The nerve block was considered successful upon the absence of responses to pinching the digital pads and mid-tibial skin of both pelvic limbs with mosquito forceps; the pinch, proprioception, and locomotion tests were performed before (baseline) and at each hour after the nerve block until sensory and motor functions returned to baseline. The effect of TRH on nerve blocks was analyzed using a linear mixed model. ResultsThe duration of the sensory nerve block at the digital pads and mid-tibial skin was longer with Bup-TRH (8.0 +/- 1.6 h and 10.9 +/- 1.6 h, respectively) than with Bup treatment (3.7 +/- 2.0 h and 8.0 +/- 1.6 h, respectively). Motor block times of proprioception and locomotion were longer with Bup-TRH (9.3 +/- 1.6 and 12.7 +/- 1.5 h, respectively) than with Bup treatment (4.6 +/- 1.9 and 9.6 +/- 1.5 h, respectively). No complications were observed. Clinical significanceTRH extended the duration of regional anesthesia of the pelvic limb using bupivacaine.
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  • College of Veterinary Medicine
  • Department of Veterinary Medicine
Research Area Pain Medicine, Systematic Anesthesia, Veterinary Anesthesiology, 수의마취통증의학


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