问答题
发布日期:2021-10-25
注射给药或称注射给药法是指将无菌药液注入体内,达到预防和治疗疾病的目的。
时间间隔就是两个时间点之间的部分,也就是通常人们所说的时间长短。
药物有几种给药途径,口服、静脉注射(静注)、肌肉注射(肌注)、皮下注射(皮下)。药物还可舌下含化(舌下)、直肠灌注(直肠给药)、滴眼、鼻腔喷雾、口腔喷雾(吸入剂),也可皮肤局部(表面)或全身(经皮)用药。每种给药途径均有其特殊目的,各有利弊。本文以氨茶碱为例,说明不同的给药途径之间的优缺点及其应用。面以应用茶碱(如给以氨茶碱)为例说明单剂(静脉注射或口服),恒速静脉输注,多剂量口服给药的动力学结果.茶碱在某些个体内代谢显示浓度依赖性,特别在小儿表现更明显.今以体重70kg的个体(病人甲)为例,其代谢和浓度无依赖性,此病人各参数值为:生物利用度为1.0,吸收速率常数为1.0/小时,表观分布容积为0.5L/kg,半衰期为8小时.
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关于DNA碱基组成的规律正确的是()。
Cloze 16 Mark was walking home from school one day when he noticed a boy ahead of him had dropped all of the books he was carrying. Mark helped the boy pick them up. 1 they were going the same way, he carried them for the boy. As they walked, Mark knew the boy’s name was Bill. Mark 2 . discovered that he loved computer games, baseball and history and that he was having a lot of 3 with his other subjects. They arrived at Bill’s home first and Mark was invited in 4 Coke and to watch some television. The afternoon passed 5 with a few laughs and some shared small talk, and then Mark went home. They 6 to see each other around school, had lunch together once or twice and then 7 ended up from the same high school. Just three weeks before they finished school, Bill asked Mark if they could have a talk. Bill 8 him of the day years ago when they had first met. ‘Do you 9 wonder why I was carrying so many things home that day?’ asked Bill. ‘You see, I 10 out my locker because I didn’t want to leave a mess for anyone else. I had planned to 11 from home and I was going home to pack my things. But after we spent some time together 12 and laughing, I realized that 13 I had done that, I would have 14 a new friend and missed all the fun we would have together. So you see, Mark, when you picked up my books that day, you did a lot more. You 15 my life.’
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