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Pregnancy-associated venous thromboembolism (VTE) is the leading cause of maternal morbidity and death. However, accurate diagnosis of lower-extremity and pelvic venous thrombosis remains largely uninvestigated. Researchers sought to determine the predictive value of compression ultrasonography in pregnant and postpartum women with clinical suspicion of deep venous thrombosis (DVT) by following such women for 3 months after a negative ultrasound test result. Of 210 such women, DVT was diagnosed by compression ultrasonography in 22 (11%). Of those with negative initial imaging studies, only 2 (1%) were confirmed to have proximal DVT within 3 months.
In a separate study, women at low risk for VTE underwent pelvic magnetic resonance imaging wit…