YEARS algorithm for pulmonary embolism
YEARS algorithm for pulmonary embolism: three items (clinical DVT signs, hemoptysis, PE most likely) set the D-dimer threshold (1000 ng/mL with 0 items, 500 with >= 1).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- D-dimer
- 400 ng/mL FEU
Result: 0 YEARS items, D-dimer 400 < 1000 ng/mL: PE excluded.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- 0 items + D-dimer <1000
- PE considered excluded without imaging.
- >=1 item + D-dimer <500
- PE considered excluded without imaging.
- Otherwise
- CTPA is indicated per the YEARS algorithm.
What you enter
- Clinical signs of DVT
- Hemoptysis
- PE is the most likely diagnosis
- D-dimer
How this is calculated
van der Hulle T, et al. Lancet. 2017;390(10091):289-297 (YEARS). 0 items + D-dimer <1000, or >=1 item + D-dimer <500 ng/mL -> PE excluded without CTPA. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.