协调性子宫收缩乏力,宫颈扩张5cm,未破膜,无头盆不称,首选处理措施为() ["A.人工破膜后酌情静滴缩宫素","B.等待产程自然进展","C.缩宫素静滴","D.剖宫产","E.应用地西泮"]
下列哪些情况属于下呼吸道阻塞() ["A.气管导管堵塞","B.喉痉挛","C.支气管痉挛","D.舌后坠","E.气管及支气管堵塞"]
otn(光传送网)的分层结构由上至下依次为:_________、_________、_________
常用的通气模式有()。 ["A.控制通气","B.辅助/控制通气","C.间歇指令通气","D.压力支持通气","E.呼气末正压"]
有关急产,下列正确的是() ["A.总产程不超过3小时","B.由于宫缩强,发生产后出血的可能性较小","C.不容易发生新生儿的窒息或颅内出血","D.子宫肌纤维缩复好","E.产程快,产妇会阴不容易裂伤"]
光传送网(otn)特点?