What causes left atrial appendage thrombus (LAAT) in atrial flutter (AFL)?

Updated: Nov 18, 2019
  • Author: Lawrence Rosenthal, MD, PhD, FACC, FHRS; Chief Editor: Jeffrey N Rottman, MD  more...
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Patients with concurrently diagnosed new rapid atrial fibrillation or atrial flutter and new reduced left ventricular ejection fraction (LVEF) appear to have  a high rate prevalence of left atrial appendage thrombi (LAAT). [10]  However, the presence of LAAT does not appear to be prognostic for eventual improvement.

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