试题与答案

女性,59岁。慢性咳喘20年。近5年来动则气急,并常有尿少、下肢浮肿。3天前感冒自服

题型:单项选择题

题目:

女性,59岁。慢性咳喘20年。近5年来动则气急,并常有尿少、下肢浮肿。3天前感冒自服感冒通后热退,但气急、咳嗽加重,昨夜因失眠服地西泮(安定)后入睡,今晨家人见其呼之不应,送来急诊。体检见神志恍惚,呼吸浅速,频率28次/min,紫绀明显。两肺散在干湿啰音。呼吸空气条件下动脉血气分析示pH7.29,PaCO210.5kPa(80mmHg),PaO26.1kPa(46mmHg)。该患者氧疗必须是()

A.面罩吸氧,氧浓度以不超过50%为宜

B.间歇吸氧联合呼吸兴奋剂静脉滴注

C.低流量(低浓度)持续吸氧

D.高压氧舱

E.氧浓度以将PaO2提高至12kPa(90mmHg)所需浓度为宜

答案:

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