患者,男,68岁,既往有慢性支气管炎病史l0年,一周前因感冒后咳嗽加重来诊。查体:神志模糊,两肺哮鸣音,心率Il0次/分,血气分析pH 7.30,Pa0250mmHg,PaC0280mmHg。下列治疗措施正确的是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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