气管切开后如术腔出现大出血，应立即() ["A．应用止血药物，密切观察","B．在套管周围填入碘仿纱条，压迫止血","C．打开切口，寻找结扎出血点","D．换上带气囊的气管套管或麻醉导管","E．立即行气管插管"]
提示新生儿窒息预后不良的因素有() ["A．窒息复苏不及时","B．慢性宫内缺氧","C．先天畸形","D．20分钟Apgar评分仍低","E．生后2周时仍有神经系统异常体征"]
脑灌注显像在早老性痴呆诊断中有何应用价值?
甲状腺摄I试验的适应证有哪些?正常参考值是多少?
成年女性可选用的气管套管内径一般为() ["A．7mm","B．8mm","C．9mm","D．10mm","E．12mm"]
脑灌注显像的适应证有哪些?
