Accuracy and Feasibility of Simplified Doppler-Based Left Ventricular Ejection Fraction

Calculation of left ventricular (LV) ejection fraction (EF) by Doppler stroke volume and end-diastolic volume (EDV) derived from LV diastolic diameter (LVIDD) could be reliable and feasible in clinical practice. In subjects with a wide range of LV volumes and EFs, magnetic resonance imaging (MRI) was used to evaluate the accuracy of common formulas (Teichholz and Z method) to estimate EDV from LVIDD (EDVTeich; EDVZ) versus volumetric EDV. The accuracy of simplified Doppler-EF was tested in a separate study sample versus real-time 3-dimensional (RT3D) echocardiography and versus bidimensional Simpson's method. A new equation to calculate EDV from LVIDD was derived using MRI and tested in the RT3D echo samples. Feasibility of Doppler-EF was tested in a third sample of consecutive inpatients and outpatients. In the MRI sample, EDVTeich was greater whereas EDVZ was smaller than volumetric EDV (both p

Source: The American Journal of Cardiology - June 10, 2013 Category: Cardiology Authors: Vittorio Palmieri, Fiorenzo Manganelli, Cesare Russo, Biagio Gagliardi, Salvatore Pezzullo, Giuliano Gagliardi, Giuseppe Rosato, Carmelo Lombardi Tags: Methods Source Type: research