transcatheter mitral valve replacement: highlife

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Transcatheter mitral valve replacement: HighLife Nicolo Piazza MD, PhD, FRCPC, FESC, FACC McGill University Health Center, Montreal, Canada INSELSPITAL, Bern University Hospital, Bern, Switzerland Mitral Valve Meeting Zurich, Switzerland Tuesday February 7, 2017 11:30‐11:38 am

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Page 1: Transcatheter mitral valve replacement: HighLife

Transcatheter mitral valve replacement: HighLife

Nicolo PiazzaMD, PhD, FRCPC, FESC, FACC

McGill University Health Center, Montreal, CanadaINSELSPITAL, Bern University Hospital, Bern, Switzerland

Mitral Valve MeetingZurich, Switzerland

Tuesday February 7, 201711:30‐11:38 am

Page 2: Transcatheter mitral valve replacement: HighLife

HighLife “Valve‐in‐Ring” concept

Atrial Ventricular

Chronic animal explant 3 months 

Page 3: Transcatheter mitral valve replacement: HighLife

2‐step procedure

+Transfemoral artery 

=Transapical or transseptal

“Valve‐in‐Ring” Ring Valve

Page 4: Transcatheter mitral valve replacement: HighLife
Page 5: Transcatheter mitral valve replacement: HighLife

Valve function at 7 days

Page 6: Transcatheter mitral valve replacement: HighLife

Mean MV gradient 3 mmHG

Mean LVOT gradient 2 mmHg

Page 7: Transcatheter mitral valve replacement: HighLife

Early clinical experience (n=8)

Safety & feasibility study 

(n=4)

Compassionate or Special access 

(n=4)

Demographics 

Age (years), avg. (range) 68 (50‐79)

Male (%) 75

Functional MR (%) 75

Previous cardiac surgery (%) 38

LVEF (%), avg. (range) 33 (25‐50)

Annular diameter (mm), range 32‐48

Page 8: Transcatheter mitral valve replacement: HighLife

• 100% success• 3 patients with > 6 months follow‐up• 1 patient with 3 month follow‐up

• n= 1 successful implant(poor LV function 25%, in‐hospital death)

• n = 1 successful implant (> 6 months follow‐up)

• n= 1 conversion to surgery  (for chordal entanglement, in‐hospital death)

• n = 1 conversion to surgery (chordal entanglement, > 1 month follow‐up)

Early clinical experience (n=8)

Safety & feasibility study 

(n=4)

Compassionate or Special access 

(n=4)

Page 9: Transcatheter mitral valve replacement: HighLife

Potential areas of entanglement – verification tests

Posterior basal chords Submitral apparatus (chords)

Case 1 Case 7

Page 10: Transcatheter mitral valve replacement: HighLife

Case 1 Case 2

Page 11: Transcatheter mitral valve replacement: HighLife

Case 3 Case 4

Page 12: Transcatheter mitral valve replacement: HighLife

Case 5 Case 6

Page 13: Transcatheter mitral valve replacement: HighLife

Take‐home messages

• Echocardiography is instrumental to verify loop positioning

• Procedure is feasible with good end result (no paravalvular leaks, mean transmitral gradients < 5 mmHG, low left ventricular outflow tract gradients < 8 mmHg) 

• Current design can accommodate a large annular range (32‐48)

• Self‐centering and does not require rotational positioning makes transseptal delivery very feasible