PMC8632399_01
Transesophageal echocardiogram indicating a large thrombus located at the opening of the left atrial appendage covering an implanted WATCHMAN FLX  device.
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fig1
Surprisingly, it was revealed that there was a large thrombus measuring 2.5 x 1.5 cm at the mouth of the LAA that was adherent to and covered the entire top of the WATCHMAN FLX  device (Figures 1 and 2).
Transesophageal echocardiogram measuring a large thrombus within the left atrium atop an implanted WATCHMAN FLX  device.
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fig2
Surprisingly, it was revealed that there was a large thrombus measuring 2.5 x 1.5 cm at the mouth of the LAA that was adherent to and covered the entire top of the WATCHMAN FLX  device (Figures 1 and 2).
Repeat transesophageal echocardiogram showing a decrease in clot formation on a WATCHMAN FLX  device within the left atrial appendage.
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fig3
TEE performed over two months prior, the attached thrombus to the device was significantly smaller, but not completely dissolved (Figure 3). The patient was advised to continue rivaroxaban 20 mg daily and to follow-up with his cardiologist for continued surveillance.