36MakarounNewAndImprovedChoicesForEndograftsMatchingAnatom ... · Innovative seals in diseased...
Transcript of 36MakarounNewAndImprovedChoicesForEndograftsMatchingAnatom ... · Innovative seals in diseased...
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Michel Makaroun MD
Co-Director, UPMC Heart and Vascular Institute Professor and Chair, Division of Vascular Surgery
University of Pittsburgh, School of Medicine
New and Improved Choices for Endografts:
Matching Anatomy to Device� Consultant in AAA field: WLGore, Medtronic, Cordis
� Grant/research support in AAA field from Cook, WLGore, Cordis, Medtronic, Bolton, Trivascular, Lombard
Faculty Disclosure
The First EVAR Device 1991
Ancure 1993-2004
Available Commercial Choices in 2013Talent AneuRx Zenith Excluder Powerlink Endurant Ovation Aorfix
ZenithFenestrated
Endurant AUI
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Over the last 10 years, Significant Device Improvements have been implemented through lessons learned from analysis of failure modes and causes of complications
Device Performance is Critical to EVAR Success
Device DeliveryDeploymentDurabilityDesign Features
Procedural Success & Improved
Long term Outcomes
Material Fatigue: Suture Miniholes
Courtesy of K. Ouriel
No Active Fixation: Migration
Treated with New Endograft inside first one
Short Overlap: Limb Disconnection
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25 Fr 27 Fr
Large Profile: Iliac Injuries
1. Commercial Interest among Industry Competitors
2. Drive for Lower Complications, Improved Performance and Longer Durability
3. Expanding Applicability of EVAR
Why New Devices?
4 Randomized Clinical Trials� EVAR trial in the UK
� DREAM trial in Holland
� OVER trial:VA Cooperative Study
� ACE trial in France
Early Results of EVAR Are Superior to Open Repair
Several Industry Regulatory Trials
In Patients with Good Anatomy
Early Days of commercially available Stent Grafts for EVAR (1998-2002)
Anatomic Criteria for EVAR� Iliac artery access >8mm� Neck:� 20-26 mm
� Angulation <60 degrees
� 15 mm length without reverse taper
� No Significant thrombus
� No Severe Calcifications
Almost any Graft will do with Good Long Term Results
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How Applicable is EVAR Anatomically?
Br J Surg 2001;88:77-81
“Only 30% of unselected AAA’s are suitable for EVAR”
� # Hospitals performing EVAR increased from 24-60
� 2002 Open EVAR P
# Patients 783 871
Mortality 4.21% 0.8% < .0001
LOS 10.3 days 3.6 days < .0001
NY State 2000-2002
Anderson PL et al. A statewide experience with endovascular abdominal aortic aneurysm repair: Rapid diffusion with excellent early results. JVS 2004, 39:10
General Community Application
US Administrative Databases: Medicare
Dillavou et al. J Vasc Surg 2006;43:446-52
Dillavou et al. J Vasc Surg 2006;43:230-8 36.1%*41.4%*
J Vasc Surg 2009;50:722-9
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50-64 y 65-74 y 75-84 y > 85 y EVAR OAR EVAR OAR EVAR OAR EVAR OAR
Hospital LOS, mean, d 2.5 7.3 2.9 8.2 3.2 9.5 3.5 9.9In-hospital mortality, % 0.3 1.2 0.8 2.5 1 5.6 1.5 9.5Discharge to home, % 98.1 94.9 96.1 88 92.3 71.5 85.6 50.2complications, % 8.8 27.3 11 34.1 15.7 41 17.9 48.9
J Vasc Surg 2003;657-63
Oct 1999-July 2002 (34 months)
� 165 had open repair. 104 (64%) due to neck anatomyShort Neck 56 Suprarenal AAA 10Large Neck 34 Angulated Neck 4Extensive Thrombus 2 No Neck issue 59
� 322 EVAR’s . 116 excluded (in trials)� 206 Not in trials: 91 Hostile necks and 115 Good necks
Unfavorable Anatomy: TheNeck
115 91
Good Results in Challenging Anatomy depend on
� Close familiarity with device peculiarities
� Using the device that fits the particular challenge
Ancure Endograft: Unsupported unibody + infrarenal hooks. But: Limited size range and Large profile of 27 Fr Sheath
Complex deployment. No Longer marketed after 2004.
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Additional Interventions Occasionally Required:Palmaz stents or Aortic extenders
Uneven Neck Type I endoleakGiant Palmaz
Adequate results in very difficult necks
Must Understand Behavior of particular Devices
Moise MA et al. Vasc Endovasc Surg 2006;40:197-203
Anatomic challenges that cause Exclusion
1997-2000
2000-2003
Change over time
Beyond Instructions For Use: Challenging Iliac Anatomy
PRE POST
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WB: 12 cm AAA10 mm Neck, severely Tapered neck with
95 degrees Angulation
Beyond Instructions For Use: Challenging Neck Anatomy
Fold because ofOversizing
Results are not always acceptable: Reinterventions
3 years later
Migration
Occlusion of The right limb
EmergencyFem fem
Late conversion
Results are not always acceptable: Reinterventions
10228 patients (1999-2008)59% <5.5 cm
� Compliance with EVAR device guidelines was low � Post EVAR sac enlargement was high
� 41% had Sac enlargement @ 5 years� ONLY 42% of EVAR’s had anatomy that fit guidelines
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Devices in 2013 have Expanded the Anatomic Limits of EVAR� Decreasing device profile makes access a non issue:
13-14 Fr devices (Incraft** / Ovation….)� More Size offerings can now treat neck diameters of
16-32 mm (Ovation / Zenith / Excluder / Endurant…)� Improved Accurate deployment systems can now treat
shorter necks. (C3 Excluder / Endurant / Incraft** …)� Fenestrated Grafts can treat very short to non existent
necks ( Fenestrated Zenith / Ventana** …)� Innovative seals in diseased necks (Ovation…) or
endostaplers for better fixation (HeliFX..)� Very Flexible design to treat very angulated necks (Aorfix)
**Caution : Investigational Device / Limited by United States Law to Investigational Use
Available Commercial Choices in 2013Talent AneuRx Zenith Excluder Powerlink Endurant Ovation Aorfix
2013 Ovation Sheath 14 F OD
1999 Ancure Sheath 27 F OD
Lower Profile: Use smaller iliacs, Expand use in Women, Decrease vascular complications
�AFX Endologix �Zenith LP** �Ovation �InCraft **
**Caution : Investigational Device / Limited by United States Law to Investigational Use
17 French 16 French 14-15 French 13-14 French
MC:82 y woman with AAA + severe iliac disease
6mm Balloons
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14 Fr Device
MC:82 y woman with AAA + severe iliac disease Percutaneous Approach: Preclose Technique
Most Modern EVAR devices have a low enough profile for percutaneous use!!
Personal Percutaneous Use since 2003 > 98% New 14 Fr devices will encourage more users
Active Fixation: Reduce Migration
� Endurant
**Caution : Investigational Device / Limited by United States Law to Investigational Use
�Aorfix
�Incraft**
� Zenith � Excluder�Ovation
�Aptus HeliFXFlexible Construction: Accommodate Anatomy
� Excluder � Endurant � Zenith-flex � Aorfix
Most Flexible is the Aorfix: Both Iliacs and Necks
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Circular Concentric Rings Designed to Accommodate Tortuous and Angulated Anatomy
The Aorfix (Lombard)
MB: Accurate Deployment and good conformability in Short Angulated Neck
Doing well at 1 year
Doing well at one year
1 year
BT: Accurate Deployment and good conformability in Severely Angulated Neck
MH: Accurate Deployment and good conformability in Severely Angulated Neck
One Month: 51 mm
Two years: 38 mm
Doing well at 3 years
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Very Accurate and Controlled Deployment:Improve Seal Zones + Use Shorter Necks
The Endurant (Medtronic)Based on delayed release of fixation until final position
IFU: Neck length > 10 mm
RO: Accurate Deployment in Very Short Neck
Adequate Seal and Good Comformability
Recapture after Initial Deployment: Improve Safety and Use of Seal Zone
The C3 Excluder deployment (WLGore)Based on a constraining mechanism
KP: Accurate Deployment in Very Angulated Neck
Adequate Seal and Good Comformability
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Molds to irregularities in Sealing Zone
The Ovation Endograft (Trivascular)Based on Biopolymer fill
TM: Reverse Taper Neck with Thrombus
Must Understand Behavior of particular Devices
Diam@ Renals: 22mm
13 mm lower: 31 mm
Allows Extension over Branches
The Zenith Fenestrated GraftCustom Made
Fenestrated Endografts: Concept
� An unfavorable or short proximal aortic neck is the most common factor limiting the applicability of EVAR
� A fenestrated graft extends the seal zone to the more stable para-visceral aorta while allowing perfusion of the visceral vessels through fenestrations in the stent graft
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MV 85 year old F: Very Short Neck
Type II endoleak treated at 3 years / well at 6 years (92y)
1 month:51 x 55 mm
1 year : 38 x 46 mm
Allows Extension over Branches off the shelf
The Ventana Endograft (Endologix)Based on a movable fenestration
**Caution : Investigational Device / Limited by United States Law to Investigational Use
JT 84 year old F: Very Short Neck
Doing well at 3 months
How should we pick an Endograft?
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How NOT to Choose An Endograft: I like the Rep! How to pick an Endograft
� Clinical data� Familiarity and expertise� Ease of use� Stock and availability� Price
2013
� Anatomy: Match Anatomy to device
How to pick an Endograft� Standard grafts may be used successfully for
many cases but new devices have special characteristics to handles difficult anatomy better� Necks 10-15 mm: New more accurate deployment
systems: C3 Excluder, Endurant..
� Very Short Necks: Fenestrated grafts
� Non Cylindrical necks: Ovation
� Severely Angulated necks: Aorfix
� Poor access and diseased iliacs: Ovation
� Occluded Iliac/narrow distal aorta…: AUI (Endurant or Zenith Renu)
Outcomes and Anatomy: A word of caution
� Late Outcomes may be negatively Impacted by Poor Anatomy
� Should Balance the decision of EVAR between Life expectancy, Risk of Rupture and Anatomic Challenge
� Close Long Term FU is needed even with newer endografts designed for challenging anatomy
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Any Room left for Open Repair?