Units: US SI

PERC Rule for Pulmonary Embolism

Age < 50? Yes
HR < 100? Yes
O2 Sat on Room Air >94%? Yes
No Prior History of DVT/PE? Yes
No Recent Trauma or Surgery? Yes
No Hemoptysis? Yes
No Exogenous Estrogen? Yes
No Clinical Signs Suggesting DVT? Yes
Score points

Equations

Scores