Score 0-4 = PE Unlikely (12.1% incidence of PE)
Check D-dimer
If D-dimer positive then obtain CTPA or V/Q scan
If D-dimer negative, no further workup needed (0.5% incidence of PE at 3 month follow up)
Score >4 = PE Likely (37.1% incidence of PE)
Obtain CT Pulmonary Angiography or V/Q Scan
New evidence suggests lower<unk>  Score with D-dimer <1000 ng/mL is effective at ruling out PE without imaging
Check D-dimer
If D-dimer positive then obtain CTPA or V/Q scan
If D-dimer negative, no further workup needed (0.5% incidence of PE at 3 month follow up)
If D-dimer positive then obtain CTPA or V/Q scan
If D-dimer negative, no further workup needed (0.5% incidence of PE at 3 month follow up)
Obtain CT Pulmonary Angiography or V/Q Scan
Wells criteria
Beers criteria
Sgarbossa's criteria
Anal tags
ADDIE system
PERC rule
Broselow color zones
WES sign