| 低血氧（低氧血症） 定义 | 您所在的位置：网站首页 › 氧饱和度低的危险 › 低血氧（低氧血症） 定义 |
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定义来自妙佑医疗国际员工
低氧血症是指血液中的含氧量低，始于名为动脉的血管。低氧血症并非疾病或医疗状况，而是与呼吸或血流有关的问题的体征。低氧血症可能会引发以下症状： 气短。 呼吸急促。 心跳加快或剧烈。 意识模糊。动脉中的健康含氧量约为 75 至 100 毫米汞柱（mm Hg）。低氧血症是指该值低于 60 mm Hg 的情况。氧气和二氧化碳废气的含量通过从动脉采集的血样测量得出。这称为动脉血气检测。 大多数情况下，首先测量红细胞携带的氧气量，称为氧饱和度。通常使用一种夹在手指上的医疗器械（脉搏血氧仪）进行测量。健康的脉搏血氧仪测量值通常在 95% 到 100% 之间。低于 90% 被认为是低血氧。 通常，低氧血症的治疗包括补充氧气。这种治疗方法称为辅助供氧或氧疗。其他治疗方法则针对低氧血症的原因。 病因 ShareTweetWeChatWeibo May 10, 2023 Theodore AC. Oxygenation and mechanisms of hypoxemia. https://www.uptodate.com/contents/search. Accessed Feb. 28, 2023. Wilkinson JM (expert opinion). Mayo Clinic. March 2, 2023. AskMayoExpert. Hypoxemia. Mayo Clinic; 2022. Broaddus VC, et al., eds. Acute hypoxemic respiratory failure and ARDS. In: Murray and Nadel's Textbook of Respiratory Medicine. 7th ed. Elsevier; 2022. https://www.clinicalkey.com. Accessed Feb. 28, 2023. Travel to high altitudes. Centers for Disease Control and Prevention. https://wwwnc.cdc.gov/travel/page/travel-to-high-altitudes. Accessed Feb. 28, 2023. Breathlessness: Shortness of breath. American Thoracic Society. https://www.thoracic.org/patients/patient-resources/resources/breathlessness.pdf. Accessed Feb. 28, 2023. Evaluation and management of the nonventilated, hospitalized adult patient with acute hypoxemia. https://www.uptodate.com/contents/search. Accessed Feb. 28, 2023. Living with COPD. National Heart, Lung, and Blood Institute. https://www.nhlbi.nih.gov/health/copd/living-with. Accessed Feb. 28, 2023. Diagnosing and treating shortness of breath. American Lung Association. https://www.lung.org/lung-health-diseases/warning-signs-of-lung-disease/shortness-of-breath/diagnosing-treating. Accessed Feb. 28, 2023. Sleep apnea symptoms and diagnosis. American Lung Association. https://www.lung.org/lung-health-diseases/lung-disease-lookup/sleep-apnea/symptoms-diagnosis. Accessed Feb. 28, 2023. Pulse oximeter accuracy and limitations: FDA safety communication. U.S. Food and Drug Administration. https://www.fda.gov/medical-devices/safety-communications/pulse-oximeter-accuracy-and-limitations-fda-safety-communication. Accessed March 2, 2023. |
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