Rethinking D-Dimer with Age in Mind

JAMA study shows age-adjusted cutoffs safely exclude DVT in more patients, sparing unnecessary ultrasounds

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An age-adjusted D-dimer cutoff improves the ability to rule out deep vein thrombosis (DVT) without additional imaging.
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The study involved 3,205 outpatients across 27 centers in Europe, with a median age of 59 years and a DVT prevalence of 14%.
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Using the age-adjusted cutoff, the proportion of patients safely excluded from DVT diagnosis increased by 7%, especially in older adults.
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No symptomatic venous thromboembolic events occurred in patients with D-dimer levels between standard and age-adjusted thresholds.
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The study highlights the need for age-adjusted D-dimer thresholds to enhance diagnostic efficiency while ensuring patient safety.

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