Question

A 72-year-old with intermediate pretest probability for PE (Wells 3) is >50 years old. D-dimer is 480 ng/mL FEU; age is 72. What is the optimal interpretation/next step?

Accepted Answer

Negative using age-adjusted threshold; no imaging needed

Answer

Positive D-dimer; obtain CTPA

Answer

Negative by fixed 500 ng/mL cutoff; discharge

Answer

Start anticoagulation now

Answer

Order V/Q scan regardless

Practice question

A 72-year-old with intermediate pretest probability for PE (Wells 3) is >50 years old. D-dimer is 480 ng/mL FEU; age is 72. What is the optimal interpretation/next step?