Introduction:The recently proposed YEARS algorithm was shown to safely exclude pulmonary embolism (PE) and reduce the use of computed tomography pulmonary angiography (CTPA) among pregnant women with suspected PE. Our aim was to externally validate this finding.
Methods:We performed a post hoc analysis of a prospective management outcome study for PE diagnosis in pregnant women. PE was diagnosed with an algorithm that combined the revised Geneva score, D-dimer testing, bilateral lower-limb compression ultrasonography, and CTPA. All women had a 3-month follow-up. All of the items necessary to use the YEARS algorithm were prospectively collected at the time of the study.
Results:Of the 395 women included in the original study, 371 were available for the present analysis. The PE prevalence was 6.5%. Ninety-one women had no YEARS items, and 280 had one or more items. When the YEARS items were combined with D-dimer levels (<1000 ng/mL in women with no items, and <500 ng/mL in women with one or more items), 77 women (21%) met the criteria for PE exclusion and would
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