刘女士,昏迷,出现尿失禁,留置导尿的护理不正确的是
A.消毒尿道自上而下,由内向外
B.每周更换集尿袋1次
C.极度虚弱的患者,第1次导尿量<1 000ml
D.倾倒尿液时,引流管不可高于耻骨联合
E.每周更换导尿管1次
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王老先生,75岁,前列腺增生,拟行经尿道前列腺电切术。术前留置导尿应采取的卧位是
A.截石位
B.屈膝仰卧位
C.半卧位
D去枕仰卧位
E.侧卧位
长期留置导尿的患者,出现尿液浑浊、沉淀或结晶时应
A.经常清洁尿道
B.膀胱内用药
C.热敷下腹部
D.多饮水,并定时进行膀胱冲洗
E.经常更换体位
护士小李在为男病人导尿时,将阴茎抬起,使阴茎与腹壁成600,他这样操作的目的是
A使耻骨下弯消失
B使耻骨后弯消失
C顺利通过尿道的3个狭窄处
D使耻骨上弯消失
E.E.使耻骨前弯消失
When estimating a demand function for a good where quantity demanded is a linear function of the price, you should
A. not include an intercept because the price of the good is never zero.
B. use a one-sided alternative hypothesis to check the influence of price on quantity.
C. use a two-sided alternative hypothesis to check the influence of price on quantity.
D. reject the idea that price determines demand unless the coefficient is at least 1.96.