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经鼻高流量氧疗临床应用进展 被引量:10

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摘要 经鼻氧疗是预防和治疗低氧血症的首要措施。传统氧疗方式有鼻导管、鼻罩、头罩及面罩吸氧等。上述氧疗方式由于气体输送时加温湿化不足或患者不适等原因,输氧最大流速受到限制。传统鼻导管吸氧的氧流量一般为0.5~4.0 L/min,最高流速可达15 L/min,但当普通鼻导管吸氧流量>6 L/min时,未经加温的高流速气体很难在气泡湿化器内被充分湿化,未予充分湿化的干冷高流量气体会给患者带来不适,包括额窦疼痛及鼻黏膜干燥甚至出血[1]。普通面罩吸氧虽可提供较高的吸入氧浓度(FiO 2),但面罩氧疗同样存在输送气体加温湿化不足的问题,且气流量太小还可能造成呼吸性酸中毒,部分患者会有幽闭感导致依从性差。
出处 《临床误诊误治》 2018年第7期110-116,共7页 Clinical Misdiagnosis & Mistherapy
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