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Abstract

Tricuspid valve regurgitation (TR) can be associated with poor prognosis. Transcatheter valve technology was adopted to treat the upstream effects of severe TR by placing a transcatheter valve in the inferior vena cava (IVC). In this study, we report off-label transcatheter valve implantation into the stented IVC in patients with severe TR for compassionate use. From September 2018 to February 2020, 6 inoperable patients with severe TR who failed medical treatment underwent percutaneous caval valve implantation (CAVI). Severity of TR was confirmed by intraoperative transesophageal echocardiography. Z-stents (Cook, Inc., Bloomington, IN, USA) were placed in the proximal IVC, and then a transcatheter valve was deployed in the suprahepatic cava without rapid pacing. Six patients, 2 females and 4 males, with a mean ± SD age of 74.7 ± 8.0 years were included. The procedure was successfully performed in all 6 patients (100%) employing a 29-mm SAPIEN 3 valve (Edwards Lifesciences, Irvine, CA, USA) with supranominal volume. No procedural complication was detected. At 30 days, TR improved from severe to trace in 1 patient, to mild-moderate in 3 patients, and 2 patients remained with severe TR. Among patients with improved TR, left ventricular ejection fraction increased from 47.5% ± 18.5% to 55% ± 20.4% (P = 0.014). No patient had readmission at 30 days. Four patients needed rehospitalization within 6 months. Percutaneous CAVI is feasible and can be considered as a short-term palliative measure in patients with severe TR. CAVI can improve TR and potentially improve cardiac output in selected patients.

Keywords

tricuspid regurgitation caval valve implantation transcatheter valve

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Percutaneous Inferior Vena Cava Valve Implantation May Improve Tricuspid Valve Regurgitation and Cardiac Output: Lessons Learned

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