aortic valve (and bav) repair and reimplantation for root ......principles of bicuspid aortic valve...
TRANSCRIPT
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Aortic Valve (and BAV) Repair and Reimplantation for Root Aneurysm: Rocky Valve Montana 2019
Joseph E. Bavaria, M.D.Roberts-Measey Professor and Vice Chief
Cardiovascular SurgeryDirector: Thoracic Aortic Surgery Program
University of PennsylvaniaPast-President STS (2016-17)
Rocky Valve, Montana
July 2019
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Candidates for David V Valve Sparing Reimplanation Operation?
• Any patient with an aortic root aneurysm and normal aortic cusps.
• Acute Type A Aortic dissection—difficult but durable.
• Patients with root aneurysm and abnormal cusps that are repairable.
• Bicuspid aortic valve—controversial.
• Severe aortic insufficiency heightens the difficulty (esp. cusp pathology).
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Marfan Root (41 yr. old Man) with 9 1st Order Relatives with either Dissection, Death from Rupture, or Replaced Roots !
45 mm
Near Prophylactic Replacement
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Swanson & Clark. Circ Res 1974;35:871-82.
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Goal: Restore (even fix) Geometry and Reduce Stress for long lasting repair
T. Gleason; Univ Penn
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Can We Spare more Complicated Clinical Aortic Valve Presentations?
And Why is this so Important!
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The Pure AI BAV Patient with Dilated/Aneurysmal Proximal Aorta
Still frames to depict anatomyNOTE; Pure AI, No Calcified Leaflets
Fairly large opening, no AS Eccentric AI
Key Point: Almost all Sievers 1 BAV will have asymmetric anatomy and will require cusp repair (100% in our series)
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Valve Pathology (N= 1356)*AS ± AI or AI for
isolated AVR
(N=884)
EXCLUDED
AVR, Bentall,
Wheat
AI ± aortic root aneurysm
(N=472)
Bentall or Proximal
Aortic Reconstruction
(N=283)Primary Leaflet Repair
± Ascending Aorta
Replacement (N=104)
Primary Leaflet
Repair
+ Root
Reimplantation
(N=85)
2002 to 2018: 1356 patients with Bicuspid Aortic
Valve Disease (the surgical practice BAV universe)
2006-2017
Total BAV Repair = 146
Since 2005
Since 2006Bavaria, JE 12/2018
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David V/ Bicuspid Valve: Sievers 0180/180 ….. Beautiful Valve!!
Because we can’t throw Valves like this in the BUCKET!!
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BAV Repair Philosophy:The Basics for AI
In Evolution!
What about AI?
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Einstein: Make everything as simple as possible ……
But No Simpler!!
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Surgical Repair BAV AI Classification: Fundamentally we are discussing Ib and c with IIMost Common combination
BAV Ib + II usually associated with 15-25% larger annulus than standard for BSA1Boodhwani et al. J Thorac Cardiovasc Surg. 2009;137:286-294
Ring
Ring
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Supra coronary
aneurysm
E.Lansac
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Principles of Bicuspid Aortic Valve Repair: The Mitral Logic in 3DThe Goal is to Restore Coaptation Surface
At this time we almost never replace an insufficient Mitral Valve – Repair
• So …. For AI Aortic Valves
• Repair and Preserve Native Cusp (leaflet) tissue
• Restore the “Normal” 3D Geometry of the Root or the “Functional Aortic Annulus” (the Annulus and STJ)
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Bicuspid Aortic Valve AI and the 3 Main presentations
• BAV with AI and relatively normal Root diameters
• BAV with AI and relatively normal Root diameters but Ascending Aneurysm
• BAV with AI and Root Dilation
• Problem: different theraputic procedures for each presentation??
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BAV AI with Normal Sinus and STJ Diameters: very dilated annulus
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Preoperative TEE: BAV, Severe AI, Normal Aorta Diameters but Very Large annulus
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Bicuspid Aortic Valve AI and the 3 Main presentations
• BAV with AI and relatively normal Root diameters
• BAV with AI and relatively normal Root diameters but Ascending Aneurysm
• BAV with AI and Root Dilation
• Problem: different theraputic procedures for each presentation??
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So …. We still have a Major Dilemma: What do we do with THIS!!!! …. To “Root” or “Not to Root”
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Normal Sinus Diameter
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Bicuspid Aortic Valve AI and the 3 Main presentations
• BAV with AI and relatively normal Root diameters
• BAV with AI and relatively normal Root diameters but Ascending Aneurysm
• BAV with AI and Root Dilation
• Problem: different theraputic procedures for each presentation??
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The Pure AI BAV Patient with Dilated/Aneurysmal Proximal aorta
Still frames to depict anatomy
NOTE; Pure AI, No Calcified Leaflets
Fairly large opening, no AS
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DV BAV with Root Aneurysm
But ….What kind of Leaflet Repair and Reconstructive Operation are
we Talking about?
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Caseo 34 yo ♂ Bicuspid Aortic Valveo Surgical Indication: 1º Aortic
• Aortic Root & Ascending Aorta Dilation • SOV: 4.73 (patient elected surgery)• Positive 1st Order relative with a Dissection• [2º: 2+ Aortic Regurgitation]
o Note• No LV dilation• Preserved EF
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BAV Sievers 1 Valve assessment: Aneurysm Resected
Excellent Motion of the Posterior (non-fused) cusp; No calcification; No fenestrations; Asymmetric leaflet free margins; “cleft” and raphe
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Different angles of the Sievers 1 BAV
(120-180 degrees)
Need the TEE
About 160-170 degrees
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Measuring the Amount of excess leaflet to resect (or plicate) for Leaflet Free Margin Equality
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Measuring the Amount of excess leaflet to resect (or plicate) for Leaflet Free Margin Equality
Treating the Prolapse
Another case: Sievers 1 BAV: Severe AI
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Raphe release; Better Motion (?)
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Cleft Repair/Plication for Free Margin equality
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BAV Repair with Resection (not Plication) of
calcified thickened Raphe
Still Frames
Triangular resection of calcified raphe
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Valve repair analysis: Ensuring Good Motion and No prolapse
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Excellent and Equal Free Margin Length
Still Frame
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Decision on Repair Geometry of ValSalva Graft
Coronary Buttons are cut.210/150 perimeter and Leaflet surface area ratios.
This is when we make 210/150 vs 180/180 decision!
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Post-Repair Evaluation: For Margin Equality, Perimeter
assessment
Another case: This is
when we make 210/150
vs 180/180 decision!
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SCA BAV repair: mild billowing, asymmetric leaflet surface area
Series 8, image 137
Mild Billowing
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The 210/150 Orientation and “Billowing”:It is really an Asymmetric Leaflet Surface Area Issue
Key Concept:
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Placement of Subannular sutures 2mm below the Leaflet insertion site
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180/180 Repair
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Freedom from AI >2+ (180/180 vs. 150/210)
Data thru 4/2018; partial update; Vallabhajosyula, Bavaria, et al; EJCTS 2014
No difference in Results of 180/180 Repair vs 210/150
About 50/50 in our practice
Key is Selection!
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Preparation of the Root for Subannular Suture Placement and Re-Implanation Procedure
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150°/210° commissural orientation
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Reimplantaion of Aortic Neoroot
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BAV 180/180Repair for Sievers 1 (undeveloped Raphe)
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Postoperative valve function = NO residual AI
Notice excellent Leaflet motion
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Coaptation = 9 mm
Annulus = 22 mm
∅ Prolapse below annulus
∅ AR
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Echo Evaluation of BAV Repair/Reimplantation
•Annular Diameter; In the OR – How much of a REDUCTION in Annular Diameter (15-20%)
•Coaptation Zone Length (> 5 mm, best is 10 mm)
•Leaflets (and Coaptation) in relation to Valve plane (Above, Same level, or Below)
•STJ to Annular Ratio
•Description of AI jet(s), LVESD/LVEDD
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Supra coronary
aneurysm
What about these normal Roots??
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So …. We still have a Major Dilemma: What do we do with these Presentations !!!! …. To “Root” or “Not to Root”
StillFrames
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Do We have a New Solution for BAV AI with Ascending Aneurysm but normal Root diameter??
…360 Sub-Annular Ring
Repair of the BAV Valve WITHOUT a Root Procedure
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Place Sub-annular exactly like the Reimplantation (DV) but for external ring only: The Root is normal
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Preoperative TEE
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Preoperative TEE: BAV, Severe AI, Normal Aorta Diameters but Very Large annulus
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Examining the valve: R/N cleft: Excellent mobility of the left cusp
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Trimming the right/non leaflet raphe (Very thickened but NON-Calcified)
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Still frames – cleft; to be closed
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Repairing (closing) the right-non cleft at the raphe
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Completed cleft repair
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Dissecting the aortic root for eventual Ring annuloplasty (Sub-Coronary)
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Subannular Dacron ring: Usually will get internal diameter 5-7 mm smaller
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Completed subannular reductionAnd Arch release for Aortic Closure
This is where you need to RE-ASSESS the Valve. Often an additional plication suture will be required on EITHER side to ensure Free margin equality and to reduce prolapse
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Postoperative TEE
videos
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Postoperative TEEExcellent motion of “Non-Conjoined”cusp
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Postoperative TEE Coaptation Zone: 10.5 mm
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Annulus: 20.9 mm
Postoperative TEE
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Post-Repair gradient peak = 6 mmHg
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Penn Series DataBAV VSRR vs other BAV techniques
What about AI?
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Outcomes with BAV Repair + Root Reimplantation:
How do they compare to our institutional tricuspid aortic valve root reimplantation?
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Freedom from AI >2+ (%)
100% of BAV VSRR had Leaflet Repair
5 years
Log-Rank P = 0.7
Data thru 4/2014 Bavaria,et al; JTCVS 2014
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Hemodynamic Results of an Algorithmic Three-Pronged Approach to Bicuspid Aortic Valve RepairMary A. Siki, BS, Andreas Habertheuer, MD, PhD, Prashanth Vallabhajosyula, MD, MS, Caroline Komlo, BS, Melanie Freas, DNP, CRNP, Rita K. Milewski, MD, PhD, Nimesh D. Desai, MD, PhD, Wilson Y. Szeto, MD, Joseph E. Bavaria, MD
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Bicuspid Aortic Valve
with Insufficiency
Calcification
Extreme fenestration
Decreased leaflet surface area
Geometric height < 18 mm
Annulus ≤
27mm
VSRR
Root Aneurysm
or Dilation
NO
NO
BAV repair
+
SCA
BAV repair
+
ESAR
NO
AVR ±
proximal aortic repair
(Bio-Bentall, Mechanical
Composite, Wheat
Procedure)
AVR ±
proximal aortic repair
(Bio-Bentall, Mechanical
Composite, Wheat
Procedure)
YES
VSRR
BAV repair
+
SCA
BAV repair
+
ESAR
YES
YES
STS/EACTS Latin America Cardiovascular Surgery Conference 2018
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SCA REPAIR
ALGORITHM
CHANGED IN 2013
Long-term Outcomes
Freedom from AI > 2+ Freedom from Re-operation
78STS/EACTS Latin America Cardiovascular Surgery Conference 2018
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Reimplantation Conclusions: Bicuspid Aortic Valve Repair +/- Ascending Aneurysm
• BAV repair with Re-implantation is very feasible with very good mid-term outcomes
• With minimal leaflet Calcification
• Good motion of the “normal” cusp
• Either 210/150 or 180/180 orientation is reasonable depending on pre-operative perimeter assessment (50/50 in our practice)
• Annular Stabilization is Critical
• Re-Implantation (or Sub-annular Ring) accomplishes this goal.
• Simple SCA in pre-op Annular diameters >27 should be abandoned
• Reconstructive principles need to be vigorously upheld
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Thomas Eakins: Gross Clinic (1878@JEFF) and Agnew Clinic (1888@PENN)
Great Progress in 10 years!
Thank You