Non-invasive Evaluation of Right Ventricular Function with Real-Time 3-D Echocardiography.
The aim of this study was to evaluate the accuracy and feasibility of real-time 3-D echocardiography (3-DE) in assessing right ventricular (RV) systolic function. A latex balloon was inserted into the right ventricle of 20 freshly harvested pig hearts which were then passively driven by a pulsatile pump apparatus. The RV global longitudinal strain (GLS), global circumferential strain (GCS), global area strain (GAS) and RV ejection fraction (RVEF), derived from 3-DE, as well as the RVEF obtained from 2-D echocardiography (2-DE) were quantified at different stroke volumes (30-70 mL) and compared with sonomicrometry data. In all comparisons, 3-D GLS, GCS, GAS, 2-D RVEF and 3-D RVEF exhibited strong correlations with sonomicrometry data (r = 0.89, 0.79, 0.74, 0.80, and 0.93, respectively; all p values < 0.001). Bland-Altman analyses revealed slight overestimations of echo-derived GLS, GCS, 2-DE RVEF and 3-DE RVEF compared with sonomicrometry values (bias = 1.55, 2.72, 3.59 and 2.21, respectively). Furthermore, there is better agreement among GLS, 3-D RVEF and the sonomicrometry values than between GCS and 2-D RVEF. Real-time 3-DE is more feasible and accurate for assessing RV function than 2-DE. GLS is a potential alternative parameter for quantifying RV systolic function.
['Chen|Ran|R|', 'Zhu|Meihua|M|', 'Amacher|Kacie|K|', 'Wu|Xia|X|', 'Sahn|David J|DJ|', 'Ashraf|Muhammad|M|']
D000818:Animals D019560:Echocardiography, Three-Dimensional D005240:Feasibility Studies D006321:Heart D006352:Heart Ventricles D023421:Models, Animal D015203:Reproducibility of Results D013552:Swine D016278:Ventricular Function, Right
Right ventricular function Real-time 3-D echocardiography Global strain