Hemoptysis is defined as bleeding from the respiratory tract below the larynx, which is emitted through the oral cavity. Generally, hemoptysis of less than 100 ml in 24 hours is small hemoptysis, 100-150 ml is moderate hemoptysis, and more than 500 ml (or 300 ml in one hemoptysis) is large hemoptysis.
Common diseases include: 1. tracheal and bronchial diseases, bronchiectasis, endobronchial tuberculosis, bronchial tumors, bronchial stones, bronchial trauma, bronchial foreign bodies; 2. pulmonary diseases, pneumonia, tuberculosis, lung cancer, Wegener’s granulomatosis.
3, primary vascular disease, pulmonary arteriovenous malformation, pulmonary embolism, increased pulmonary venous pressure (mitral stenosis).
4, other diseases, endometriosis, systemic coagulation disorders, application of anticoagulants, etc. Once hemoptysis occurs, you should go to the hospital in time to clarify the cause and get early diagnosis and treatment.