Detection of a Left Atrial Thrombus Under Fondaparinux Treatment: A Case Report

Interruption of oral anticoagulation is discussed often, particularly in the outpatient setting. We present a 66- year-old woman who developed a thrombus in the left atrial appendage under bridging therapy with fondaparinux. With this case report we would like to emphasize that off-label use of fondaparinux should not be administered to patients at high risk for systemic embolism