axxess for left main stenting - bifurc.net · case 5 (pseudoaneurisma) • the axxess stent is a...
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Axxess for left main
stenting Eulogio García
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Axxent LMCA Trial
• Design: Multi center pilot study
to evaluate the AXXENT stent
(LM Bifurcated Coronary Stent
System)
• Objective: To evaluate the
feasibility and safety of LMCA
stenting with AXXENT stent
• Principal investigator:
Eberhard Grube, MD
Helios Heart Center,
Siegburg, Germany
33 patients enrolled in 4 clinical sites
in Europe
Angiographic FU
at 6 months in
93.9% (N=31)
Clinical FU at 6
months in 100%
(N=33)
Clinical FU at
12 months in
93.9% (N=31)
IVUS FU at
6 months in
84.8% (N=28)
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N procedures 33
AXXENT stent device success 30 (90%)*
Lesion Success 32 (97%)
Procedure Success 31(94%)
Stent Distribution Pattern (N, %)
AXXENT stent only
AXXENT stent in LM+ Cypher in Cx
AXXENT stent in LM+ Cypher in LAD
AXXENT stent in LM+ Cypher in both Cx &
LAD
2 (6.1%)
0 (0%)
3 (9.1%)
27 (82%)
*All three deployment failures occurred in 12 mm model- stent too long for vessel
Axxent LMCA Trial: Procedure
Outcomes
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LM only 6.1%
(2/33)
LM + LCX + LAD: 82%
(27/33)
LM + LCX: 0%
LM + LAD: 9.1%
(3/33)
Axxent LMCA Trial: Stent Distribution
Patterns
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6 Months Angiographic Outcomes
N=31 Patients Left Main LAD LCX
Post Procedure
MLD- mm
%DS
Acute Gain- mm
3.63 ± 0.37
9.6 ± 5.3
1.80 ± 0.84
2.65 ± 0.41
13.1 ± 6.7
0.82 ± 0.71
2.47 ± 0.41
14.6 ± 6.6
0.96 ± 0.58
6 mo FU
MLD- mm
%DS
LL- mm
3.59 ± 0.46
9.66 ± 8.6
0.03 ± 0.30
2.41 ± 0.62
20.6 ± 18.1
0.24 ± 0.60
2.03 ± 0.64
28.4 ± 21.5
0.46 ± 0.69
Binary Restenosis 0/30
(0%)
2/29
(6.9%)
5 /31 (16.1%)
1 Year Clinical Outcomes
Axxent LMCA trial
0
3,2
6,5
12,9
3,2
19,4
0 0
5
10
15
20
25
%
No restenosis in the AXXENT stent.
The AXXENT stent is not CE approved and not available in any country.
N= 31
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Lessons from the Axxent LMCA
trial
No restenosis and or late loss in AXXENT stent.
Restenosis and late loss in LCX elevated compared to LAD,
possibly related to underdeployed stents and vessel angulation.
No late stent thrombosis observed through 12 months FU
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CASE 1
• 60-year-old-man, DM 2, HTA, smoker.
• NSTE-ACS with PCI to middle LAD in 2012 (Promus 2.25x16 mm).
• Residual LVSF 35%
• Admitted for surgical intervention of diabetic foot isquemia.
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• EBU 3,5 7 French guiding catheter
• 2 BMW® guidewires (Abbott Vascular Devices, Redwood, CA, USA) LAD and Cx.
• Circumflex PCI: - Predilatation 2.5x11 mm Mercury balloon
- 2.5x18 mm Biomatrix stent implantation.
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• LM predilatation with 3x12 mm NC Quantum Apex (16 atm).
• 3.5x14 mm Axxess stent positioning.
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Final Kissing (LAD: 4x8 mm NC Trek at 14 atm. CX:3.5x12 mm NC Trek at 14 atm).
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CASE 2
73-year-old-man, smoker. Anterior MI in 2012 with primary angioplasty to proximal LAD.
Residual LVSF 30%.
Admitted with congestive heart failure (first episode).
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• EBU 4 7 French guiding catheter
(femoral access)
• 2 BMW® guidewires (Abbott
Vascular Devices, Redwood, CA,
USA) LAD and Cx
• Predilatation with 3x12 mm
Emerge balloon at 6 atm.
• 3.5x14 mm Axxess
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• Final Kissing balloon (4x9 mm NC Sprinter at 16 atm. 4.5x8 mm NC Quantum Apex at 14 atm)
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73 year-old.man, with hypertension, hypercholesterolemia and tabaquism.
Chest pain with positive stress test and inferior ischemia.
TTE: normal systolic function.
CASE 3
Medina 1,0,0
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• EBU 3,5 7 French guiding catheter (radial
access)
• 2 BMW® guidewires (Abbott Vascular
Devices, Redwood, CA, USA) LAD and Cx
• Predilatation 3.5x10 NC Hiryu® (Terumo,
Tokyo, Japan) at 12 atm
• 3.5x11 mm Axxess stent advanced to LM.
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• Final Kissing balloon (3.5x10 mm Hiryu at 10 atmospheres at the LM-LAD and
semicompliant Sprinter 3x15 mm balloon at 10 atmospheres at the ramus)
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*
*
*
*
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*
*
* *
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E. García, L. Unzué ,FJ Rodríguez
Placement of a single Axxess stent as new treatment strategy for Medina 1,0,0 left main stem bifurcation lesion.
2013, IC-13-00488. Journal of Invasive Cardiology
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CASE 4: CAUTION (Kissing stent)
48-year-old. HT, Hypercholesterolemic. Previous smoker.
Admitted due to NSTE-ACS. TTE with inferior and lateral hipocinesia and mild
systolic dysfunction.
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• EBU 3,5 7 French guiding catheter
• 2 BMW® guidewires (Abbott Vascular Devices, Redwood, CA, USA) LAD and Cx
• Predilatation with non compliant balloon Empira ® 3x12 mm at 8 atm.
• 3.5x11 mm Axxess stent.
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• Kissing balloon: 3x12 mm Empira at 10 atm LAD. 2.5x12 mm Empira at 8 atm Cx.
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Kissing stent: 3x14 mm Biomatrix LAD. 2.75x14 mm Biomatrix Cx.
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CASE 5 (PSEUDOANEURISMA)
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• The Axxess stent is a safe and effective device suitable for
complex as well as simple bifurcation treatment strategies.
• The use of Axxess stent in LM bifurcation lesions may be
considered in selected cases, achieving good lesion
coverage with minimal metal amount at the bifurcation.
• The Axxess stent is especially useful in bifurcations with
major affectation of the main vessel (Medina 1,0,0) where
the lesion can be attempted with the implantation of this
unique stent, eventually avoiding the use of additional
stents.
CONCLUSIONS