Abstract
Recently, speckle-tracking derived displacement of the tricuspid annulus in transesophageal echocardiography [TEE] has been shown to agree with TAPSE in transthoracic echocardiography [TTE].1 Furthermore, we have shown that differentiating speckle-tracking based displacement of the tricuspid annulus over time (i.e. a velocity) represents a TEE surrogate for the myocardial systolic excursion velocity (S') in TTE.2 As measuring diastolic dysfunction by E' (the peak mitral annular velocity during early filling) in TEE may be inaccurate due to misalignment of the Doppler beam and is often forgotten, we sought to examine the accuracy of speckle-tracking based early diastolic velocity of the mitral annulus.
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