Aortic Valve Regurgitation Clinical Trial
Official title:
Transcatheter Aortic Valve Replacement for Pure Severe Aortic Valve Regurgitation: a Real-world, Prospective, Multicenter Study (TRUST TAVR Registry)
The purpose of this multicenter, prospective and observational registry is to evaluate the safety and efficacy of TAVR for treatment of pure severe aortic valve regurgitation. Baseline characteristics, procedural and clinical data will be collected
Pure native aortic valve regurgitation (NAVR) is a multifactorial valvular disease, with a prevalence of moderate or severe NAVR ranging from 0.5% to 2.7%. Patients with severe NAVR have a poor prognosis, conservative management has a 1-year mortality rate of more than 20%. Currently, surgical aortic valve replacement (SAVR) is the recommended treatment strategy for patients with NAVR. However, data showed that only 20% of patients with severe NAVR and left-ventricular ejection fraction (LVEF) of 30-50% undergo SAVR, while only 3% of those with an LVEF below 30% receive SAVR. Therefore, a less invasive surgical alternative therapy is needed for high surgical-risk patients from SAVR. Transcatheter aortic valve replacement (TAVR) is now considered the first-choice treatment for elderly patients with aortic stenosis, regardless of surgical risk. Recently, it has also been used to treat patients with NAVR in an "off-label" setting. The latest European guidelines suggest that TAVR may be considered in experienced centers for selected patients with AR who are not eligible for SAVR. However, the role of TAVR in patients with severe NAVR is still debatable. Current studies on this topic are limited by their retrospective design and small sample sizes. Dedicated devices for aortic regurgitation, such as the JenaValve, have shown promising results in terms of technical success and short-term outcomes. However, TAVR for patients with NAVR using on-label devices has a relatively high rate of pacemaker implantation. Additionally, the dedicated device was designed only for tricuspid valve anatomy, making TAVR with off-label devices the main invasive strategy for high-surgical risk patients with bicuspid valves. It's worth noting that the dedicated device is not yet commercially available worldwide. Therefore, further investigation into TAVR using off-label devices for NAVR patients, including those with bicuspid and tricuspid valves, is necessary. The objective of this study was to evaluate the safety and efficacy of TAVR in patients with NAVR in a real-world setting. ;
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