Deep vein thrombosis and pulmonary embolism - blood clots in the leg veins, which can dislodge and move to the heart and lungs.

深静脉血栓和肺栓塞——腿部静脉出现血块，它可移动至心脏和肺部。

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Syptoms were considerably serious. Diagncsis was based on D-Dimers, ultrocardiogrophy, leg vein doppler, perfusion lung scanning and selective pulmonary angiography.

二聚体检测、超声心动图、下肢静脉多普勒、肺通气灌注扫描、选择性肺动脉造影，可确诊。

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Thromboembolism occurs when a blood clot (from a deep vein thrombosis) in a leg vein breaks off and travels through the body to the lungs where it becomes lodged and blocks blood flow.

当下肢静脉中的血凝块（来自深静脉血栓形成）脱落并通过身体移动到肺部，在那里沉积和阻塞血流时，就发生血栓栓塞。

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The actual test itself involves going into a vein in the leg.

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He had undergone an above-the knee amputation on his right leg at the Queen Elizabeth Hospital Birmingham and, as part of the surgery, a vein was removed from his left leg leaving a wound which would not heal properly.

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