大咯血是常见的急重症,应当就地抢救,争分夺秒,切忌未经妥善处理就转院治疗,路途颠簸足以加剧出血,甚至造成死亡。大咯血主要由感染(如肺结核、支气管扩张、肺脓肿等)、新生物(如原发性或转移性肺部肿瘤、良性息肉、腺瘤及囊肿等)以及心血管病(如二尖瓣狭窄、肺血栓-栓塞病、遗传性毛细血 Severe hemoptysis is a common critical illness, should be rescued on the spot, race against time, should not be transferred without proper treatment, jolting sufficient to exacerbate the bleeding, and even cause death. Hemoptysis is mainly caused by infection (such as tuberculosis, bronchiectasis, lung abscess), neoplasms (such as primary or metastatic lung tumors, benign polyps, adenomas and cysts) and cardiovascular diseases (such as mitral stenosis Pulmonary thromboembolism, Hereditary capillaries