Patients with pulmonary embolism and aged 18 years or older were enrolled in this study.Patient demographic characteristics((age, sex, department, diagnosis, ), basic vital signs, symptoms at their admissions (hemoptysis, dyspnea, chest pain, syncope), laboratory examinations (blood lab routines, blood gas, liver and kidney function, myocardial marker), and imaging examinations (vascular ultrasonography, computed tomographic angiography, echocardiography, chest CT, CTPA, pulmonary perfusion imaging, pulmonary angiography, PET/CT) were collected by reviewing the cases. The prognostic information was collected by telephone follow-up. The follow-up end point was June 2024.

