toe for percutaneous closure of septal defect (asd, vsd)
TRANSCRIPT
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Werner Budts Md, PhD, FESC, FACC Congenital and Structural Cardiology University Hospitals Leuven Belgium
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Conflict of interest None
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Introduction Atrial septal defect Ventricular septal defect
The input of the sonographer is essential in percutaneous septal procedures!!
Sonographer + Interventionalist =
Safety Efficiency Efficacy
Main message
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The general idea To close a defect with a device:
Double disk / umbrella / helex
(Coils)
ASD
VSD
Amplatzer Figulla
CeraFlex NitOcclud …
Amplatzer muscular Amplatzer perimembranous …
One disk on the left One disk on the right
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Select the right patient Only the ASD secundum type is feasible for percutaneous
closure Exclude ASD primum type and ASD sinus venosus type
ASD primum type Close to mitral valve
- Mitral valve repair -
Sinus venosus defect SVC and pulmonary vein involved
- Atrial rerouting - 5
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Select the right patient Only the ASD secundum type is feasible for percutaneous
closure Sizes up to 40 mm (stretched) can be closed percutaneously
(maximal unstretched diameter + 25 to 50%)
ASD secundum type
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Select the right patient Evaluate all rims (and measure corresponding diameters)
Anterior, posterior, superior, and inferior
Figure 1. Artist's drawing of right anterior surface of heart with right atrial free wall removed. Approximate locations of 5 measured atrial septal defect rims are labeled. AAO, Ascending aorta; AI, anteroinferior; AS, anterosuperior; IVC, inferior vena cava; PI, posteroinferior; PS, posterosuperior; S, superior; SVC, superior vena cava. Mathewson et al. J Am Soc Echocardiogr 2004.
3D view from right atrium
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Select the right patient Evaluate all rims (and measure corresponding diameter
(Postero)inferior and superior rims need to be sufficient
Figure 1. Artist's drawing of right anterior surface of heart with right atrial free wall removed. Approximate locations of 5 measured atrial septal defect rims are labeled. AAO, Ascending aorta; AI, anteroinferior; AS, anterosuperior; IVC, inferior vena cava; PI, posteroinferior; PS, posterosuperior; S, superior; SVC, superior vena cava. Mathewson et al. J Am Soc Echocardiogr 2004.
Bicaval view
(P)I S
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Select the right patient Evaluate all rims (and measure corresponding diameters)
Posteroinferior rim needs to be sufficient
Figure 1. Artist's drawing of right anterior surface of heart with right atrial free wall removed. Approximate locations of 5 measured atrial septal defect rims are labeled. AAO, Ascending aorta; AI, anteroinferior; AS, anterosuperior; IVC, inferior vena cava; PI, posteroinferior; PS, posterosuperior; S, superior; SVC, superior vena cava. Mathewson et al. J Am Soc Echocardiogr 2004.
AS PI
Anteroposterior view
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Select the right patient Evaluate all rims (and measure corresponding diameter
Anterosuperior rim is the only rim which is not needed
Figure 1. Artist's drawing of right anterior surface of heart with right atrial free wall removed. Approximate locations of 5 measured atrial septal defect rims are labeled. AAO, Ascending aorta; AI, anteroinferior; AS, anterosuperior; IVC, inferior vena cava; PI, posteroinferior; PS, posterosuperior; S, superior; SVC, superior vena cava. Mathewson et al. J Am Soc Echocardiogr 2004.
PI
Anteroposterior view
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Select the right patient Evaluate all rims (and measure corresponding diameters)
Posterosuperior and anteroinferior rims need to be sufficient
Figure 1. Artist's drawing of right anterior surface of heart with right atrial free wall removed. Approximate locations of 5 measured atrial septal defect rims are labeled. AAO, Ascending aorta; AI, anteroinferior; AS, anterosuperior; IVC, inferior vena cava; PI, posteroinferior; PS, posterosuperior; S, superior; SVC, superior vena cava. Mathewson et al. J Am Soc Echocardiogr 2004.
Four chamber view
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Select the right patient Evaluate all rims (and measure corresponding diameters)
No sufficient rims = do not send for percutaneous close!!
Figure 1. Artist's drawing of right anterior surface of heart with right atrial free wall removed. Approximate locations of 5 measured atrial septal defect rims are labeled. AAO, Ascending aorta; AI, anteroinferior; AS, anterosuperior; IVC, inferior vena cava; PI, posteroinferior; PS, posterosuperior; S, superior; SVC, superior vena cava. Mathewson et al. J Am Soc Echocardiogr 2004.
No septum
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Select the right patient Count the number of defects and describe the location
and sizes of all defects seperately Largest defect: preferred location of single device
Bicaval view ASD2 with multiple orifices. (Left) Fenestrations (arrows) of the S1. A large ASD2 is also present. (Right) A band of S1 (B) divides the ASD2 orifice (see Video 9). In the orientation icon, blue designates the y plane, red designates the x plane, and green designates the z plane. Roberson et al. J Am Soc Echocardiogr 2011.
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Select the right patient Do not forget to exclude abnormal pulmonary venous
return; all four pulmonary veins can be visualised by TOE
Left pulmonary veins Right pulmonary veins
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Guide the interventionalist How to cross the septum with the guide wire and where to
park the wire (in the left upper pulmonary vein) Largest defect: preferred location of the guide wire
3D view from left atrium
Guide wire in upper pulmonary vein
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Help the interventionalist With balloon sizing of the defect to “stop flow”
Fluoroscopy
TOE
Waiste without color flow = stretched diameter
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Help the interventionalist With balloon sizing of the defect to “stop flow”
Fluoroscopy
Color TOE Persistent flow = second defect
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Help the interventionalist Evaluate the stability/quality of all rims
No “strong” posterior rim = insufficient rim
Stable rims (waiste)
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Help the interventionalist Guide the deployment and positioning of the left sided
disk
Warn for deployment in LAA and interference with mitral valve
Show relationship with the rims when the left sided disk is pulled
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Help the interventionalist Guide the deployment and positioning of the left sided
disk
Show the axis of the left disk = Parallel with the axis of the septum
Warn for deployment in LAA and interference with mitral valve
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Help the interventionalist After deployment of the disks, confirm device stability
Posterior rim Device may not touch the roof
Anteroinferior rim Device may not interfere with
the mitral valve function
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Help the interventionalist After deployment of the right sided disk, confirm device
stability
Anterosuperior rim Insufficient anterosuperior rim
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Ease the interventionalist Check for residual shunting
Through the device Through a second defect Because of undersizing
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Ease the interventionalist Show the final implant result
2D TOE 3D TOE
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Follow-up Evaluate
Device position
Device structure
Exclude Residual shunting
Pericardial effusion
Thrombi on the device
Endocarditis on the device
Interference with valve function
Solysafe
Wire fracture
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Select the right patient Muscular (congenital / post-infarction) and peri-
membranous VSDs are feasible for percutaneous closure Exclude large inlet and doubly committed VSDs
Different types of VSD
Muscular VSD up to 24 mm
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Select the right patient Muscular (congenital / post-infarction) and peri-
membranous VSDs are feasible for percutaneous closure Exclude large inlet and doubly committed VSDs
Different types of VSD Membranous VSD up to 18 mm
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Guide the interventionalist How to cross the septum with the catheter and the wire
Angiography left ventricle Fluoroscopy 28
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Guide the interventionalist How to cross the septum with the catheter and the wire
Catheter through the aortic valve Catheter through the PM VSD into the pulmonary artery
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The interventionalist alone To complete the veno-arterial rail (femoral/jugular-femoral)
Fluoroscopy No image: outside the echo field 30
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Guide the interventionalist Measure the diameter of the defect and help to choose
the size of the device Before or after wire positioning
With or without balloon sizing
Perimembranous VSD Muscular VSD
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Help the interventionalist Guide the deployment of the left and right sided disk of
the device; reassure device position
Fluoroscopy
TOE: device still attached
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Ease the interventionalist Confirm correct device size and exclude interference with
surrounding valves (aortic valve, tricuspid valve); give green light to release the device
Too small Aortic valve regurgitation
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Ease the interventionalist Show nice images…
TOE device in PM position TOE device in muscular position
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Follow-up Evaluate
Device position
Device structure
Exclude Residual shunting
Pericardial effusion
Thrombi on the device
Endocarditis on the device
Interference with valve function
Thrombus on device
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Conclusions The help of a sonographer during a percutaneous septal
closure procedure is extremely useful To increase feasibility
To increase efficiency and efficacy
To lower complication rates
The sonographer must have knowledge of the procedure and must think in the same way as the interventionalist
Teamwork = the idea
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