你在服用抗凝药物（比如华法林，肝素）或者抗血小板聚集药物（阿司匹林或氯吡格雷）——一般情况下，在结肠镜检前应明停止服用这些药物，以防出血不止。

Are taking any blood-thinning drugs (such as warfarin or heparin) or antiplatelet medication (such as aspirin or clopidogrel)

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但是这些抗血小板药物也增加出血的风险，包括上消化道出血。

But these antiplatelet drugs also increase the risk of bleeding, including upper GI bleeding.

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此外，房颤患者可能出现医源性死亡，例如，抗心律失常药物导致的促心律失常作用或抗凝药物导致的出血。

But they can also die of iatrogenic conditions for example proarrhythmia effect from anti-arrhythmia drugs or hemorrhage from anticoagulants.

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