Multiplane transesophageal echocardiographic assessment of left atrial appendage anatomy and function.
Anatomic indexes of the LAA are dependent on the plane in which the appendage is viewed. Greater LAA neck width and cross-sectional area are observed at 135 degrees than at 45 degrees or 90 degrees, consistent with the characteristic 3-dimensional ungular shape of this structure. Appendage ejection and inflow velocity measurements are independent of the imaging plane.
Chan, SK; Kannam, JP; Douglas, PS; Manning, WJ
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