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豚鼠听性脑

 
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lin91957
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PostPosted: Wed 9:35, 02 Mar 2011    Post subject: 豚鼠听性脑

豚鼠听性脑干诱发电位对重复麻醉及不同麻醉剂的反应
,846合剂为保定宁、氟哌啶醇等药物制成的复方制剂,由长春军需大学兽医研究所试制,是一种动物全身麻醉剂,具有中枢镇痛、镇静和肌肉松弛作用,可用于犬、兔、鼠、猫、马、牛等动物的手术麻醉和药物制动。其对心血管和呼吸功能的影响一般都在动物生理波动范围内,机体可自行调节适应,不构成有害作用。测试动物ABR时,用846合剂腹腔麻醉,与用戊巴比妥钠麻醉相比,麻醉起效时间快,实验后动物苏醒也快,动物心血管和呼吸状态稳定,尿便失禁和流涎等症状发生率低,动物很少发生抽搐,死亡率亦很低,未发现有明显的毒副作用,而且测试结果的变异性也较小。此外,在本次试验中,戊巴比妥钠组和846合剂组相比,听阈、Ⅱ波波幅及IⅢ波间期差异无显著性意义,而戊巴比妥钠组Ⅱ波潜伏期则明显延长,ABR各波潜伏期对应于从听神经到下丘的听觉通路,因此它们反应了听觉冲动经脑干听通路的传输过程,Ⅱ波潜伏期延长,说明戊巴比妥钠腹腔注射麻醉影响了动物的听觉传导t】,进而影响ABR捌试的敏感性和准确性。结论:846合剂完全可以代替戊巴比妥钠作为豚鼠ABR测试的麻醉药物,而且在一定程度上要优于后者。与戊巴比妥钠相比,846合剂是豚鼠ABR测试较为理想的麻醉剂。而846合剂在其他动物的应用,仍需进一步探讨。4
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