Use only if you would be confident in excluding PE with a neg D-dimer
If all are present AND low suspicion for PE, no D-dimer needed:
Check all of the following that are true:
Age <50yr
Pulse ox >94% (room air)
HR <100
No prior PE or DVT
No recent surgery or trauma (within prior 4wk)
No hemoptysis
No estrogen use
No unilateral leg swelling
In patients with low suspicion for PE (best-guess pre-test probability <15%) AND all are true, only 0.9% had PE (n=7527) and it can be<unk> d-out without further testing (i.e. no need for d-dimer)
PERC rule
FALLS protocol
ADDIE system
STOPP/START criteria
Wells criteria
Anal tags
Labs Checklist
Hemocue