Fig. 2. Pregnancy-adapted YEARS algorithm for suspected acute pulmonary embolism in pregnant patients. a)If a woman has clinical sign of DVT, check compression ultrasonography of the symptomatic leg and initiate anticoagulant if DVT is confirmed. b)Initiate ant-icoagulant if chest CTPA indicates PE. Abbreviations: CTPA, computed pulmonary angiography; DVT, deep vein thrombosis; PE, pulmonary embolism.