The gold standard for the diagnosis of pulmonary embolism is pulmonary arteriography, which has a high diagnostic value, but it is an invasive test that requires attention to the occurrence of complications.
Pulmonary arteriography is the “gold standard” for the diagnosis of pulmonary embolism. Its sensitivity is about 98% and specificity is about 95%~98%. The direct sign of diagnosis is a contrast filling defect in the pulmonary artery, which may be accompanied by track signs of blood flow blockage. Indirect signs may include slow flow of pulmonary artery contrast medium, localized hypoperfusion, and delayed or absent venous return.
Pulmonary arteriography is an invasive test, and complications such as allergic reaction to contrast and renal insufficiency can occur. Meanwhile, contrast allergy, renal insufficiency, bleeding disorders, etc. are contraindications to pulmonary arteriography.
If there is any discomfort, it is recommended to consult a doctor in time and take appropriate examination and treatment measures under the doctor’s guidance.