The purpose of this study is to analyze the clinical manifestations, imaging features, and prognosis-related factors of pulmonary embolism, and to explore the prognosis risk assessment model for Chinese patients

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.

Inclusion Criteria:

Aged 18 years or older. Discharged with the diagnosis of PE from Peking Union Medical College Hospital.

Exclusion Criteria:

Diagnosed PE by other health care facility or transferred from other health care facility .

Without important follow-up data.

Inpatients diagnosed as pulmonary embolism who meet the inclusion criteria above.