简述会阴体在临床上的意义。
胃内容物反流误吸至肺内，不宜行下列哪项处理() ["A．插入带有气囊的气管内导管","B．气管内吸引","C．机械通气","D．迅速将手术台摇到头低20°","E．即刻大量灌洗支气管"]
下列哪项为COPD病人的危险因素是() ["A．长期吸烟","B．颈部粗短","C．心电图示肺性P波","D．身体较瘦","E．有麻醉药过敏史"]
治疗严重急性肺水肿的措施，下述哪项最恰当() ["A．利尿","B．强心","C．纯氧正压通气","D．双下肢轮流扎止血带","E．上述措施同时进行"]
骨盆轴
骨盆腔
