Right ventricular reserve in cardiopulmonary disease: a simultaneous hemodynamic and three-dimensional echocardiographic study.

Background: RV reserve has been linked to exercise capacity and prognosis in cardiopulmonary diseases. However, evidence in this setting is limited, due to the complex shape and load dependency of the RV. We sought to study right ventricular (RV) adaptation to exercise by simultaneous three-dimensional echocardiography (3DE) and right heart catheterization (RHC).

UTILITY OF THE RATIO BETWEEN THE SIZE OF THE RIGHT ATRIUM AND THE RIGHT VENTRICLE AT END-SYSTOLE TO DIAGNOSE ATRIAL SECONDARY TRICUSPID REGURGITATION.

Background: In the multiparametric framework for diagnosing atrial secondary tricuspid regurgitation (A-STR), an end-systolic (ES) right atrial (RA) to right ventricular (RV) volume or area ratio ≥1.5 supports the diagnosis of A-STR over the ventricular STR phenotype (V-STR). However, this threshold value has never been tested.

Tricuspid Valve S-Curves and Chamber Views: Implications for Transcatheter Tricuspid and Pulmonary Valve Interventions, Part 2 of the S-Curves and Chamber Views Series.

Despite the challenges associated with periprocedural imaging, transcatheter tricuspid valve interventions have shown important impact on outcomes. A comprehensive understanding of the anatomy of the right heart and surrounding structures is crucial. One way to optimize these interventions is by identifying the optimal fluoroscopic viewing angles along the S-curve of the tricuspid valve.

Association With Outcomes of Correcting the Proximal Isovelocity Surface Area Method to Quantitate Secondary Tricuspid Regurgitation.

Background: Although the correction of the proximal isovelocity surface area (PISA) method has been shown to improve the accuracy of assessing the severity of secondary tricuspid regurgitation (STR), its clinical impact remains to be investigated. The aim of this study was to compare the association of the quantitative parameters of STR severity obtained from the corrected and conventional PISA methods with outcomes.

Methods: Both conventional and corrected effective regurgitant orifice area (EROA) (EROA vs corrected EROA [EROAc]), regurgitant volume (RegVol) (RegVol vs corrected RegVol [RegVolc]), and regurgitant fraction (RegFr) (RegFr vs corrected RegFr [RegFrc]) were measured in 519 consecutive patients (mean age, 75 ± 12 years; 44% men; 74% with ventricular STR) with moderate and severe STR.

Three-Dimensional Transthoracic Echocardiography for Semiautomated Analysis of the Tricuspid Annulus: Validation and Normal Values.

Background: The expansion of tricuspid valve (TV) interventions has underscored the need for accurate and reproducible three-dimensional (3D) transthoracic echocardiographic (TTE) tools for evaluating the tricuspid annulus and for 3D normal values of this structure. The aims of this study were to develop new semi-automated software for 3D TTE analysis of the tricuspid annulus, compare its accuracy and reproducibility against those of multiplanar reconstruction (MPR) reference, and determine normative values.

Methods: Three-dimensional TTE images of 113 patients with variable degrees of tricuspid regurgitation were analyzed using the new semiautomated software and conventional MPR methodology (as the reference standard), each by three independent readers.