关于CO2排出综合征下列何者为错() ["其表现为血压下降、心动过速、严重心律失常甚至心脏停博","治疗时不必补充血容量","CO2突然排出可使冠脉和脑血管收缩","PaCO2持续升高一段时间后突然降低可诱发此症","全身大多数血管舒张,故容量相对不足"]
先天愚型患儿染色体检查核型95%以上为() ["47,XY(或XX),+21","46,XX(或XY),-14,+t(14q21q)","45,XX(或XY),-14,-21,+t(14q21q)","46,XX(或XY),-21,+t(21q21q)","46,XX(或XY),-22,+t(21q22q)"]
食道癌的直接浸润一般不会引起() ["食道-气管瘘","肺脓肿","脓胸","大出血","颈部淋巴结肿大"]
男性,36岁,因十二指肠球部溃疡行毕Ⅱ式胃大部切除术后4天,出现腹部绞痛,伴频繁、喷射性呕吐。查体:上腹部压痛,腹膜刺激征阳性。查血钾2.0mmol/L,血钠126mmol/L。可能出现的心电图改变是() ["A.T波低平、双相","U波增高","ST段下移","Q~T间期延长","以上都有可能出现"]
胃癌常见的组织学类型中不包括() ["乳头状腺癌","管状腺癌","黏液腺癌","印戒细胞癌","透明细胞癌"]
直肠、肛门检查