Modified Strategy to Safely Rule Out Pulmonary Embolism in the Emergency Department

"Modified diagnostic strategy (MODS):~All included patients will be tested with quantitative D-dimer. The MODS work-up strategy will be based on YEARS rule, that included three criteria (hemoptysis, signs of DVT, PE is the most likely diagnosis)~\- If all YEARS criteria are absent, the threshold of D-Dimer for ordering a CTPA will be raised at 1000 ng/ml.~If at least one criterion of YEARS is present, then the D-dimer threshold for ordering a CTPA will be as usual (500 ng/ml, or agex10 for patients aged 50 and over)"