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六、氧气疗法的指征与给氧方法根据机体缺氧的严重程度,临床上将缺氧分为三度: 轻度:临床症状不明显或仅有活动时气急、心悸、轻度紫绀,神志清楚,PaO_2>50mmHg,SaO_2在80%以上,PaCO_2<50mmHg。中度:静息状态气急、心悸、明显紫绀,间有精神症状,PaO_230～50mmHg,SaO_260～80%,PaCO_2>50mmHg(很少超过80mmHg)。重度:显著呼吸困难和紫绀,大汗,多有精神症状,或呼吸循环受抑制,昏迷,
Sixth, the indication of oxygen therapy and oxygen method According to the severity of hypoxia, the clinical hypoxia is divided into three degrees: mild: clinical symptoms were not obvious or only active shortness of breath, palpitations, mild cyanosis, mind Clear, PaO_2> 50mmHg, SaO_2 in more than 80%, PaCO_2 <50mmHg. Moderate: resting state shortness of breath, heart palpitations, obvious cyanosis, between the psychiatric symptoms, PaO_230 ~ 50mmHg, SaO_260 ~ 80%, PaCO_2> 50mmHg (rarely more than 80mmHg). Severe: significant breathing difficulties and cyanosis, sweating, and more mental symptoms, or respiratory cycle inhibition, coma,