Question

A 68-year-old with low Wells score for PE has D-dimer 620 ng/mL FEU. What next?

Accepted Answer

Apply age-adjusted D-dimer (age×10) → negative at <680; no imaging

Answer

Proceed to CT pulmonary angiography regardless

Answer

Use fixed 500 ng/mL cutoff → image

Answer

Start anticoagulation and discharge

Answer

Order V/Q scan in all low-risk patients

Practice question

A 68-year-old with low Wells score for PE has D-dimer 620 ng/mL FEU. What next?