Run Time: 4 minutes
Author: Dr. Martin O’Bryan
- PERC Score: age >50, HR <100, O2 >95%, no history of PE or DVT, no recent trauma, no hemoptysis, no oral contraceptive, and no unilateral leg swelling.
- If all are negative then probability of a PE is under 2%.
- A WELLS Score of <4 = low risk for PE and a negative dimer is good enough to rule out PE – there is no need for CT scan.
- WELLS score: PE #1 dx (+3), HR >100 (+1.5), surgery/immobilization in last 4 weeks (+1.5), previous DVT (+1.5), hemoptysis (+1), malignancy in last 6 months (+1), and symptoms of a DVT (+3).
- Study shows that a clinic feeling is as good as a WELLS score.