女性，65岁，慢性支气管炎、肺气肿患者。其血气分析结果为：pH7．38、PaCO283mmHg，给予吸氧治疗，PaO2维持多少较为合适（） _临床病理科住院医师_全学科试题题库

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女性，65岁，慢性支气管炎、肺气肿患者。其血气分析结果为：pH7．38、PaCO₂83mmHg，给予吸氧治疗，PaO₂维持多少较为合适（）
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