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人体呼出的气体中,除了氮、氧和二氧化碳之外,还包含着其他许多种化合物,通过检测这些化合物的含量即可诊断疾病。如呼出气体中丙酮含量较高的话,意味着患糖尿病;呼出气体中一氧化氮含量高则是哮喘病。由于非侵入式的呼吸分析仪器在医学诊断和疾病监控中具有很大潜力。已有多种呼吸分析仪器开发成功,但大多数是使用质谱分析方法或激光技术来分析呼出气体中特定物质含量,分析范围较小,诊断不同的疾病需
The body’s exhaled gases, in addition to nitrogen, oxygen and carbon dioxide, contain many other compounds that can be diagnosed by testing the levels of these compounds. If the expired gas with high acetone content, it means that suffering from diabetes; exhaled gas nitric oxide is high in asthma. Noninvasive breathing instruments have great potential in medical diagnosis and disease surveillance. A great variety of breath analysis instruments have been developed, but most are the use of mass spectrometry or laser techniques to analyze specific substances in exhaled gases for a limited range of analyzes and to diagnose different diseases