A 55-year-old with suspected PE is PERC positive but low pretest probability. D-dimer (FEU) 300 µg/L, age 55. Next step?...

Question

A 55-year-old with suspected PE is PERC positive but low pretest probability. D-dimer (FEU) 300 µg/L, age 55. Next step?

Accepted Answer

Use age-adjusted cutoff (550 µg/L) and consider test negative

Answer

Stop workup; PERC negative

Answer

CTPA now

Answer

V/Q scan now

Answer

Empiric anticoagulation

PE Workup (age-adjusted D-dimer) — MRCEM SBA MCQ