临产18小时,宫口开大2cm()宫口开大8cm,超过2小时无进展()临产10小时,宫口开大2cm()官口开全1小时20分钟,产程无进展() ["A.正常产程","B.潜伏期延长","C.活跃期延长","D.活跃期停滞","E.第二产程停滞"]
正常状态下泪液每分钟分泌量() ["A.O.5~2.2μl","B.O.9~2.2μl","C.0.7~2.3μl","D.O.6~2.3μl","E.O.9~2.3μl"]
可观察到肠系膜上动脉压迹的是()可观察到胰头病变的是() ["A.十二指肠肠圈","B.十二指肠降部","C.十二指肠水平部","D.十二指肠升部","E.十二指肠球部"]
左心房增大可见于()左心室增大可见于()法洛四联征可见于() ["A.左支气管抬高征","B.心后三角消失","C.心尖抬高","D.靴形心脏","E.肺门舞蹈"]
女,2岁半,生后发现口唇青紫,活动后加剧,半年内曾晕厥2次,均于清晨或哭吵后发作,经2~3分钟自行恢复,今晨又出现晕厥,持续5分钟,即来急诊。体格检查:神志清,发绀明显,血压75/53mmHg(10/7kPa),心率120次/min,胸骨左缘第2~3肋间有Ⅱ~Ⅲ级收缩期杂音,无震颤,P2减弱,轻度杵状指征。考虑其晕厥的原因是由于() ["A.长期缺氧","B.血液黏稠","C.脑血栓肜成","D.血流缓慢","E.漏斗部肌肉痉挛"]
食管上段为()食管中段为()食管下段为()