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患者，男，58岁，有2型糖尿病、高血压病病史。实验室检查：血肌酐746.0umol/L，尿素40.20umol/L；肾脏彩超提示双肾多发囊肿，双肾实质回声增强，皮髓质分解不清。血肌酐升高20。确诊为慢性肾衰竭（尿毒症期）；肾性贫血。医嘱予以血液透析治疗。首次透析护士给予股静脉直接穿刺建立临时性血管通路，在血液引出到体外循环血路管及透析器后，出现血流量不足，护士给予调整穿刺针位置以求最佳血流量，但仍不理想，并且出现穿刺部位渗出，临时血管通路建立失败。但此时透析器半数以上纤维已发生凝血，动静脉壶有血块，机器出现静脉高压报警。 出现此种现象的原因有哪些？
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举一反三
【单选题】We all agree that computers are essential ______ the problems of increasing population.
A.
to solve
B.
to solving
C.
solving
D.
of solving
【单选题】1岁婴儿，未接种过麻疹疫苗，3天前接触过麻疹患儿，应采取的措施是
A.
立即注射麻疹疫苗
B.
立即注射麻疹免疫血清球蛋白
C.
隔离观察
D.
2周后注射麻疹疫苗
E.
口服板蓝根抗病毒治疗
【简答题】Which one is not essential to be a good reviewer?
【单选题】The opening ceremony is a great occasion; it is essential ______ for that.[2003]
A.
for us to be prepared
B.
that we are prepared
C.
of us to be prepared
D.
our being prepared
【单选题】The essential of the problem is to ________
A.
stick up for free speech
B.
cleanse the academic setting
C.
cut the throat of free speech
D.
please the minorities
【简答题】【T6】 A. DEPENDS B.ESSENTIAL C.DISCOURAGED A.THE CHILD GETS【T1】______ B.THIS【T2】______ON INTERACTION C.IS【T3】______TO THE GROWTH BUT SPEECH HAS TO BE INDUCED, AND【T4】______BETWEEN THE MOTHER AND THE CH...
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