ArticleQuantitative imaging in medicine and surgery2026
Transthoracic Doppler echocardiography of normal tricuspid valve prostheses: comparison between surgical and transcatheter approaches.
Article in Quantitative imaging in medicine and surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Tricuspid valve (TV) replacement with surgical bioprosthetic, surgical mechanical, or transcatheter prostheses is a critical intervention for severe tricuspid regurgitation or stenosis. However, comprehensive echocardiographic comparisons of hemodynamic performance across these prosthesis types remain limited, especially for novel transcatheter prostheses. This study aimed to systematically analyze the transthoracic echocardiographic (TTE) Doppler parameters of three types of tricuspid prostheses with normal function to provide accurate references for the management of patients following clinical TV replacement (TVR). Methods: This retrospective study included 62 patients with surgical bioprosthetic valves, 52 with surgical mechanical valves, and 25 with transcatheter valves. Clinical data, along with comprehensive two-dimensional (2D) and Doppler echocardiographic parameters, were collected from normal tricuspid prostheses. Doppler parameters were measured at the TV position, including peak early tricuspid diastolic velocity (E velocity), mean gradient (MG Results: The normal ranges (95% confidence interval) of transthoracic Doppler echocardiographic parameters for the three types of tricuspid prostheses were established for surgical bioprosthetic valves (E velocity, 1.40-1.59 m/s; MG Conclusions: This study established prosthesis-specific echocardiographic reference values for normal tricuspid prostheses. Values outside these ranges may indicate dysfunction, although the clinical correlation remains to be determined. These findings can enhance the postoperative monitoring of tricuspid prostheses.
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