Key result
Two-dimensional echocardiography using the apex four-chamber view identified tricuspid valve displacement in 100% of patients with Ebstein's anomaly, compared to 0% of controls.
Why the study?
Does two-dimensional echocardiography accurately assess tricuspid valve displacement and chamber dimensions in patients with Ebstein's anomaly?
Observational (n=9)
Does two-dimensional echocardiography accurately assess tricuspid valve displacement and chamber dimensions in patients with Ebstein's anomaly?
Absolute Event Rate: 100% vs 0%
Two-dimensional echocardiography, particularly the apex four-chamber view, is an effective non-invasive method for visualizing and assessing the severity of Ebstein's anomaly, with measurements comparing favorably to angiography.
Apex four-chamber view may aid Ebstein's diagnosis; leaves open validation against modern imaging before practice change.
Nine patients with Ebstein's anomaly of the tricuspid valve were studied by two-dimensional echocardiography, using the standard long and short axis views as well as the apex four chamber view. With this latter view, the displacement of the tricuspid valve into the right ventricle was clearly seen in all nine cases of Ebstein's anomaly and was not noted in a control population. The severity of the tricuspid displacement was assessed by comparing the position of the mitral and tricuspid valves relative to the cardiac apex. The apex four chamber view allowed visualization of the atrioventricular (AV) ring simultaneously with the displaced tricuspid valve, and therefore the size of the "atrialized" right ventricle, true right ventricle and right atrium could be determined. These dimensions compared favorably with angiography.
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Ports et al. (1978) conducted an observational in Ebstein's anomaly of the tricuspid valve (n=9). Two-dimensional echocardiography (apex four chamber view) vs. Control population was evaluated on Visualization of tricuspid valve displacement into the right ventricle. Two-dimensional echocardiography using the apex four-chamber view identified tricuspid valve displacement in 100% of patients with Ebstein's anomaly, compared to 0% of controls.
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