Wells PE score is designed to help you predict the pretest probability for PE (not diagnosis!) so it should only be used in the presence of clinical suspicion
Did you know there’s a Wells score for PE and another for DVT?
What may be BETTER than Wells? The YEARS algorithm Study!
If a patient is low risk by Wells criteria, then “PERC out!”
PESI (or the simplified sPESI) classifies 30-day mortality risk in patients with acute PE
CHEST guidelines for antithrombotic therapy in VTE disease can help us choose therapy type (including when to give tPA and whether to treat subsegmental PE) and long-term duration, but none of the recommendations are based on high-quality evidence
You don’t have to be a radiologist to learn how to read a CT pulmonary angiogram!
Most PE arise from the proximal veins in the LE, especially the iliac, femoral, and popliteal veins
Complete duplex US is the preferred US test for diagnosing DVT. It assesses the deep veins from the inguinal ligament to the ankle with compression performed at 2-cm intervals.
D-dimer increases with age, so use an age-adjusted level for patients ≥50yo by multiplying their age by 10
ex: 62yo patient has D-dimer cutoff of 620
CT pulmonary angiography is NOT specific for PE–it simply assesses filling defects in the pulmonary vasculature. Filling defects can be seen not only in PE (both acute and chronic) but also with poor patient positioning, inadequate contrast infusion, anatomical defects, and scars.