Laa

Thrombus

Fig. 7. Spontaneous echocontrast (smoke-like swirling) is visible within the left atrium and appendage during transesophageal echocardiography. It is a reflection of sluggish blood flow and rouleaux formation (see Chapter 13, Fig. 3). It is associated with thrombus formation (curved arrow) and embolic complications.

Fig. 8. Pulsed wave Doppler interrogation of left atrial appendage flow is a standard part of the transesphageal echocardiography examination of the appendage. Flow below 0.2 m/s is suggests stagnation (arrow) as seen in this patient with atrial fibrillation and left atrial thrombus (compare to Fig. 5). (Please see companion DVD for corresponding video.)

Laa Thrombus

Fig. 8. Pulsed wave Doppler interrogation of left atrial appendage flow is a standard part of the transesphageal echocardiography examination of the appendage. Flow below 0.2 m/s is suggests stagnation (arrow) as seen in this patient with atrial fibrillation and left atrial thrombus (compare to Fig. 5). (Please see companion DVD for corresponding video.)

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