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[问答题] 无尿与少尿概述

膜电位由静息电位去极化至0mV时() ["Na+通道开放,产生Na+内向电流","Na+通道开放,产生Na+外向电流","Na+通道开放也不产生Na电流","K+通道开放时不产生K+电流","膜两侧K+浓度梯度为零"] 麻醉前用药的目的包括以下哪几项() ["镇静","提高痛阈","减少呼吸道分泌物","增强肌肉松弛作用","抑制迷走神经反射"] 最易遭受化学毒性代谢产物损伤的器官是() ["心","肝","脾","肺","肾"] 患者贫血临床表现,肝、脾肿大,血红蛋白74g/L,网织红细胞15%,白细胞、血小板正常,骨髓红细胞系统增生明显活跃,Coombs试验阴性;Ham试验阴性,红细胞渗透脆性试验正常;自溶试验增强,加葡萄糖不纠正,加ATP纠正,诊断为遗传性溶血性贫血该例中网织红细胞15%,可除外哪种贫血() ["A.再生障碍性贫血","遗传性球形红细胞增多症","珠蛋白生成障碍性贫血","G-6-PD缺乏症","不稳定血红蛋白病"] 经腋窝行臂丛神经阻滞麻醉时,下列哪些神经难以被阻滞() ["尺神经","正中神经","桡神经","环、注指神经","上臂肌皮神经"] 无尿与少尿概述
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