Question

A 55-year-old with suspected PE is low-intermediate risk. An age-adjusted D-dimer is negative using age × 10 ng/mL (fibrinogen equivalent units) for patients >50. Next step?

Accepted Answer

No further testing for PE

Answer

CTPA to confirm

Answer

V/Q scan regardless

Answer

Start therapeutic anticoagulation

Answer

Wait 24 hours and recheck D-dimer

Practice question

A 55-year-old with suspected PE is low-intermediate risk. An age-adjusted D-dimer is negative using age × 10 ng/mL (fibrinogen equivalent units) for patients >50. Next step?