Valvular & structural heart disease

1-Year Outcomes Following Transfemoral Transseptal Transcatheter Mitral Valve Replacement: The HighLife Trans-Septal Mitral Valve Replacement (TSMVR) Feasibility Study

JACC Cardiovasc IntervPublished Prospective nonrandomized feasibility study

Authors' conclusion

The 1-year results from the HighLife TSMVR feasibility study demonstrate a high technical success rate, excellent valve function, no left ventricular outflow tract obstruction, and no need for mitral valve reintervention.

Study context

Population
Patients with moderate to severe or severe symptomatic mitral regurgitation (MR) at high surgical risk
Participants
30 patients
Outcome
Safety and performance of the HighLife TSMVR system
Follow-up
1-year follow-up
Methodological detailsmulticentre, 13 sites, independent echocardiographic core laboratory
  • Multicentre
  • 13 sites
  • Independent echocardiographic core laboratory

Main finding

As reported in the abstract

Technical success

HighLife TSMVR

90%

27 of 30

Observational data: associations, not effects.

Further findings

Device success · 30 days

Device success
83%

Residual MR in implanted patients · 1 year

No or trace MR
78%
Mild MR
22%

HighLife valve mean gradient · 1 year

Mean gradient
5.1 mm Hg

LV outflow tract obstruction · 1 year

No signs of LV outflow tract obstruction; mean gradient
2.0 mm Hg

Death · 1 year

Patients who died
5 (17%)

Safety

Mitral valve reintervention in implanted patients · 1 year

Patients requiring mitral valve reintervention
0

Original publication

1-Year Outcomes Following Transfemoral Transseptal Transcatheter Mitral Valve Replacement: The HighLife TSMVR Feasibility Study. JACC Cardiovasc Interv. Published 22 November 2023. doi:10.1016/j.jcin.2023.09.003

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