肺炎是指不同病原体或其他因素所致的肺部炎症,如不及时治疗,可以引起各种严重的并发症,其中之一就是呼吸衰竭,简称呼衰。呼衰是指呼吸中枢或/和呼吸器官发生病变,引起肺部气体交换障碍,出现缺氧,二氧化碳潴留及呼吸性酸中毒,并引起各器官的一系列病理生理变化。临床上根据病 Pneumonia is caused by different pathogens or other factors of lung inflammation, if not treated, can cause a variety of serious complications, one of which is respiratory failure, referred to as respiratory failure. Respiratory failure refers to the respiratory center and / or respiratory organs lesions, causing gas exchange disorders in the lungs, hypoxia, carbon dioxide retention and respiratory acidosis, and cause a series of pathophysiological changes in various organs. Clinically based on the disease