Hazra Sarbani, De Dipak, Roy Biswarup, Bose Arup, Nandi Samit, Konar Aditya
Department of Veterinary Surgery and Radiology, West Bengal University of Animal and Fishery Sciences, Kolkata, India.
Vet Ophthalmol. 2008 Jul-Aug;11(4):255-9. doi: 10.1111/j.1463-5224.2008.00639.x.
The study was undertaken to evaluate the use of ketamine, xylazine, and diazepam along with a local retrobulbar nerve block for routine phacoemulsification in the dog. Animals Ten clinically healthy mixed-breed dogs of either sex, weighing between 10 and 15 kg.
Ten mixed-breed dogs were selected for unilateral cataract removal by phacoemulsification. Standard preoperative preparations for cataract surgery were followed. Pre-anesthetic medication consisted of atropine sulfate (0.02 mg/kg, SC). Anesthesia was induced by xylazine HCl (1.0 mg/kg, IM) followed by ketamine (5.0 mg/kg, IM). Anesthesia was maintained subsequently with IV ketamine and diazepam to effect and depth of anesthesia was assessed clinically by pedal reflex and jaw reflex. After induction of anesthesia, a retrobulbar nerve block was performed using 2 mL of 2% lignocaine. Eye position was graded after retrobulbar block and IOP was examined preoperative, post-anesthetic, 6 h postoperative and 24 h after surgery. Phacoemulsification was performed using the phaco-chop technique and an intraocular lens was placed. Anesthetic recovery and postoperative recovery following surgery was recorded.
The exposure of the globe in all the dogs was adequate; the desired central fixation of the eye was obtained and surgery could be performed uneventfully. The mean IOP recorded after induction of anesthesia was 15.75 +/- 0.82, which was not significantly (P > 0.01) different from pre-anesthetic values (14.85 +/- 0.85).
Phacoemulsification was successfully performed with this anesthetic regimen without encountering major intraoperative or anesthetic complications.
本研究旨在评估氯胺酮、赛拉嗪和地西泮联合局部球后神经阻滞在犬常规超声乳化白内障吸除术中的应用。
10只临床健康的杂种犬，雌雄不限，体重10至15千克。
选择10只杂种犬进行单侧超声乳化白内障摘除术。遵循白内障手术的标准术前准备。麻醉前用药包括硫酸阿托品（0.02毫克/千克，皮下注射）。麻醉诱导采用盐酸赛拉嗪（1.0毫克/千克，肌肉注射），随后注射氯胺酮（5.0毫克/千克，肌肉注射）。随后通过静脉注射氯胺酮和地西泮维持麻醉效果，并通过足趾反射和下颌反射临床评估麻醉深度。麻醉诱导后，使用2毫升2%利多卡因进行球后神经阻滞。球后阻滞后置评眼位，并在术前、麻醉后、术后6小时和术后24小时检查眼压。采用超声劈核技术进行超声乳化白内障吸除术并植入人工晶状体。记录麻醉恢复情况和术后恢复情况。
所有犬的眼球暴露充分；实现了预期的眼球中央固定，手术顺利进行。麻醉诱导后记录的平均眼压为15.75±0.82，与麻醉前值（14.85±0.85）相比无显著差异（P>0.01）。
采用该麻醉方案成功实施了超声乳化白内障吸除术，未出现重大术中或麻醉并发症。
