摘要
背景:目前有关小尾寒羊心脏手术实验麻醉方法方面的研究甚少,其有效性和安全性尚需大量的实验进行验证。目的:探讨小尾寒羊心脏手术麻醉方法的有效性和安全性。方法:市售雄性小尾寒羊40只,年龄(10.95±0.89)月,体质量(71.3±7.7) kg。小尾寒羊肌注氯胺酮8-12 mg/kg+东莨菪碱10-20μg/kg(或者静注氯胺酮2.5-3.5 mg/kg+东莨菪碱10-15μg/kg)进行基础麻醉,再静脉注射丙泊酚和芬太尼全身麻醉下行主动脉瓣及二尖瓣置换。观察气管插管反应、小尾寒羊围术期(切皮前5min、切皮后5 min、体外转机前5 min、体外停机后5 min、术毕、术后1 d)生命体征、血流动力学变化、麻醉恢复情况及围术期并发症。结果与结论:(1)所有动物气管插管均成功;(2)围术期镇静镇痛效果满意,生命体征平稳;无体动发生,能很好地耐受瓣膜置换术;(3)围术期血气分析显示内环境稳定;(4)未发生反流误吸;无死亡;(5)结果说明,丙泊酚复合异氟烷加小剂量芬太尼全身麻醉用于小尾寒羊心脏手术血流动力学平稳,术后苏醒快,麻醉效果好,安全性高。
BACKGROUND: At present, there are few studies on the anesthetic methods for cardiac surgeries in Small-Tailed Han sheep, and further experimental verifications on the effectiveness and safety are still required.OBJECTIVE: To evaluate the safety and effectiveness of anesthetic methods for cardiac surgeries in Small-Tailed Han sheep. METHODS: Forty Small-Tailed Han sheep, aged(10.95±0.89) months, weighing(71.3±7.7) kg, underwent aortic valve plus mitral valve replacement after basic anesthesia with intramuscular ketamine(8-12 mg/kg)+scopolamine(10-20 μg/kg) or with intravenous ketamine(2.5-3.5 mg/kg)+scopolamine(10-15 μg/kg) and general anesthesia with intravenous propofol and fentanyl. The bucking response in endotracheal intubation, vital signs, hemodynamic changes, recovery condition and complications were observed during the perioperation(5 minutes before incision, 5 minutes after incision, 5 minutes before in vitro transfer, 5 minutes after in vitro shutdown, immediately after surgery, 1 day after surgery). RESULTS AND CONCLUSION: None of the animals failed in intubation. Perioperative sedation and analgesia were satisfactory, and vital signs were stable; perioperative blood gas analysis shows stable internal environment; no body movement occurred, and all cases well tolerated valve replacement; no regurgitation and aspiration occurred during operation; and there were no deaths during the procedure. Anesthesia with propofol and isoflurane plus low-dose fentanyl has the advantages of rapid recovery, stable hemodynamics and good anesthetic effect, which is a safe and effective anesthesia scheme for cardiac surgery in Small-Tailed Han sheep.
引文
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