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The time interval between the onset of early transmitral flow velocity (E) and that of early diastolic mitral annular velocity (e') (T(E-e')) is a good predictor of elevated left ventricular (LV) filling pressure in patients with sinus rhythm. Although the evaluation of LV filling pressure using E/e' has been challenging in atrial fibrillation (AF), the usefulness of T(E-e') is unknown.

circulation journal

Simultaneous Doppler Tracing of Transmitral Inflow and Mitral Annular Velocity as an Estimate of Elevated Left Ventricular Filling Pressure in Patients With Atrial Fibrillation