Indian Heart Journal

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Assessment of three-dimensional (3-D) left ventricular ejection fraction and speckled tracking echocardiographic strain parameters in non-ischemic left bundle branch block (LBBB) patients and their association with cardiovascular events A prospective observational study
(Elsevier, 2024-06) Naseer, Niyas K.; Kumar, Abhishek; Qureshi, Naeem; Sajeev, C.G.
Objective: To investigate the association between three-dimensional (3-D) left ventricular ejection fraction (LVEF) and various speckle tracking echocardiographic (STE) strain parameters in non-ischemic left bundle branch block (LBBB) patients with major adverse cardiovascular events (MACE) during a one-year follow-up phase. Method: A total of 50 patients with non-ischemic LBBB were assessed using various parameters of 3-D echo- cardiography. They were compared with their same-age and sex control group and then followed up with repeat 3-D echocardiography for MACE for one year. Results: Composite outcomes were seen in (n = 11 [22 %], including cardiovascular mortality (n = 2 [4.0 %]) and hospitalization for heart failure (n = 9 [18.0 %]). Mean values of the left ventricle (LV) global longitudinal (GLS), circumferential (GCS), and radial (GRS) strains were