Eight-Year Clinical Outcomes of Transcatheter Aortic Valve Replacement with J-Valve System.

Purpose: This study aimed to summarize 8-year clinical outcomes for patients who underwent transcatheter aortic valve replacement (TAVR) with the J-Valve system and evaluate the long-term durability and hemodynamic performance of the valve.

Methods: Between July 2014 and June 2015, 21 patients underwent transapical TAVR with the J-Valve system. Systematic clinical and echocardiographic follow-up was conducted on 18 patients for up to 8 years.

Results: Eight years post-TAVR with the J-Valve system, the all-cause mortality rate was 16.7%, with no prosthesis failures or thrombosis. Moderate to severe valve deterioration was observed in 50% of patients with aortic stenosis (AS), whereas no such deterioration was noted in patients with pure aortic regurgitation (PAR). At 8 years following TAVR, the effective orifice area measured 2.27 ± 0.50 cm² in patients with PAR and 1.35 ± 0.38 cm² in those with AS. Additionally, patients with AS exhibited a mean pressure gradient of 17.90 ± 10.61 mmHg. Over 8 years, PAR patients experienced a significant reduction in left ventricular end-diastolic diameter from 61.50 ± 2.08 mm to 48.67 ± 7.23 mm (p < 0.001), whereas AS patients showed no significant change.

Conclusion: The J-Valve system demonstrates favorable long-term outcomes in TAVR, with excellent durability and hemodynamic performance in PAR patients.