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病例介绍例1:侯××,男57岁,因肺心病呼吸衰竭于1979年11月23日住院。神志清醒,中度发绀,能咳痰,P_aO_2 30mmHg,P_aCo_270mmHg。某医师给予鼻导管吸氧,开始以每分钟1升(吸氧浓度25%)的氧流量吸入,2小时后病人 P_aO_2提高至35mmHg,P_aCO_2上升至72mmHg。该医师认为疗效不满意,就将氧流量提高到每分钟5升(吸氧浓度41%),5小时后复查血气,病人 P_aO_2提高到70
Case introduction Example 1: Hou × ×, male 57 years old, due to pulmonary heart disease respiratory failure in November 23, 1979 hospitalization. Conscious, moderate cyanosis, expectoration, P_aO_2 30mmHg, P_aCo_270mmHg. A physician administered oxygen to the nasal cannula and began inhalation at a flow rate of 1 liter per minute (oxygen concentration 25%). After 2 hours, the patient increased P_aO_2 to 35 mmHg and P_aCO_2 to 72 mmHg. The doctor that the effect is not satisfied, it will increase the oxygen flow to 5 liters per minute (oxygen concentration of 41%), 5 hours after the review of blood gas, the patient P_aO_2 increased to 70