肺梗塞,是肺动脉发生了梗塞,肺的血供减少,从而影响肺的功能。患者出现一系列相应症状,包括不明原因的呼吸困难、胸痛、咳嗽、咯血等,严重者甚至因呼吸功能急剧衰竭或交感神经反射而猝死。三类人群容易发生肺梗塞。第一类是久坐久卧者尤其是肥胖、下肢静脉曲张、手术后以及中风、心脏病、高血压、高血脂、糖尿病等慢性病 Pulmonary infarction, pulmonary artery occlusion, decreased blood supply to the lungs, thus affecting lung function. The patient developed a series of symptoms including unexplained dyspnea, chest pain, cough, hemoptysis, and even severe cases of sudden death due to respiratory failure or sympathetic reflexes. Three types of people prone to pulmonary infarction. The first is sedentary long-sleepers, especially obesity, varicose veins, surgery and stroke, heart disease, hypertension, hyperlipidemia, diabetes and other chronic diseases