Fowler David, Isakow Kevin, Caulkett Nigel, Waldner Cheryl
Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4.
Can Vet J. 2003 Aug;44(8):643-8.
The analgesic efficacy of an epidural morphine/mepivacaine combination alone versus epidural morphine/mepivacaine in combination with meloxicam administered prior to the onset of anesthesia was assessed in 20 dogs undergoing cranial cruciate ligament repair. Numerical and visual analog pain scores were performed prior to anesthesia and at 6, 8, 12, 16, and 24 hours after epidural administration by a trained observer, blinded to treatment. An analgesiometer was used to determine the amount of pressure required to produce an avoidance response at the incision site. Animals that received meloxicam demonstrated a trend toward decreased pain scores over all time periods. Visual analog pain scores tended to be lower in dogs receiving meloxicam across all time periods, with a significant interaction between time and visual analog score at 6 and 8 hours (P < 0.05). No dogs receiving meloxicam required rescue analgesia, while 3 of 10 dogs in the epidural only group required rescue analgesia. Administration of meloxicam in addition to epidural morphine plus mepivacaine conveys improved analgesia as compared with epidural alone. Postoperative analgesia is reliably maintained for 24 hours following administration.
在20只接受颅交叉韧带修复术的犬中,评估了单独使用硬膜外吗啡/甲哌卡因组合与在麻醉开始前给予美洛昔康的硬膜外吗啡/甲哌卡因组合的镇痛效果。在麻醉前以及硬膜外给药后6、8、12、16和24小时,由一名对治疗不知情的训练有素的观察者进行数字和视觉模拟疼痛评分。使用痛觉计确定在切口部位产生回避反应所需的压力量。接受美洛昔康的动物在所有时间段内疼痛评分均有下降趋势。在所有时间段内,接受美洛昔康的犬的视觉模拟疼痛评分往往较低,在6小时和8小时时时间与视觉模拟评分之间存在显著交互作用(P<0.05)。接受美洛昔康的犬均无需急救镇痛,而仅接受硬膜外给药的10只犬中有3只需要急救镇痛。与单独硬膜外给药相比,硬膜外吗啡加甲哌卡因联合美洛昔康给药可改善镇痛效果。给药后术后镇痛可可靠维持24小时。