Pulmonaryembolism“Should I get a D-Dimer test or CT chest angiogram on my patient with atypical chest pain to rule-out a pulmonary embolism?” This is a common question asked by emergency physicians on a routine basis.

Here are 3 clinical prediction rules: PERC, Wells, and Simplified Geneva Score. Personally, I’ve never used the Geneva Score, but it’s worth looking at.

A WORD of CAUTION

These rules should be used with caution, because none of these scoring protocols are perfect. For instance, in a recent publication in the Journal of Thrombosis and Haemostasis, the authors found that the PERC rule does not actually safely exclude PEs.1 Big bummer for us clinicians.

PV Card: Pulmonary Embolism Clinical Prediction Rules


Go to the ALiEM Cards site for more resources.

Thanks to Dr. Kit Tainter (Mount Sinai PGY-4 EM resident) for coming up with the idea for this card!

1.
Hugli O, Righini M, Le G, et al. The pulmonary embolism rule-out criteria (PERC) rule does not safely exclude pulmonary embolism. J Thromb Haemost. 2011;9(2):300-304. [PubMed]
Michelle Lin, MD
ALiEM Founder and CEO
Professor and Digital Innovation Lab Director
Department of Emergency Medicine
University of California, San Francisco
Michelle Lin, MD

@M_Lin

Professor of Emerg Med at UCSF-Zuckerberg San Francisco General. Founder of ALiEM @aliemteam #PostitPearls https://t.co/7v7cgJqNEn
Michelle Lin, MD