transcatheter closure of vsd using duct occluder devicesummitmd.com/pdf/pdf/1190_transcatheter...
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Transcatheter closure of VSD Transcatheter closure of VSD using Duct Occluder deviceusing Duct Occluder device
Nguyen Lan Hieu, MD, PhDNguyen Lan Hieu, MD, PhDHanoi Medical UniversityHanoi Medical UniversityVietnam Heart InstituteVietnam Heart Institute
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Anatomy of VSDAnatomy of VSD1. Perimembranous VSD: Aneurysm 1. Perimembranous VSD: Aneurysm septal membranous(TV or PA septal membranous(TV or PA obstruction), ARobstruction), AR2.VSD supcristal beneath PV or/and 2.VSD supcristal beneath PV or/and AVAV®®Laubry Pezzi syndrome(AV prolapsed)Laubry Pezzi syndrome(AV prolapsed)3.Inlet VSD (AVSD)3.Inlet VSD (AVSD)4.Muscular VSD4.Muscular VSD
+ Apical+ Apical+ Marginal+ Marginal+ Central + Central
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Various locations for VSDsVarious locations for VSDs
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Hemodynamic Classification Hemodynamic Classification Type Size AP/PS RP/RS Qp/Qs
Ia Resistive <0.3 <0.3 1.0-1.5
Ib Resistive <0.3 <0.3 1.5-2
IIa Resistive 0.3-0.7 <0.5 >2
IIb Non resistive
0.7-1 <0.8 >2
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Hemodynamic Classification Hemodynamic Classification Nom Size AP/PS RP/RS Qp/Qs
III Non resistive
>1 >1 <1
VI Non resistive
<0.7 <0.5 >2
VSD Ia and Ib: Malade de Roger VSD IIa and IIb: VSD high debit VSD III: Eissenmenger (large VSD) VSD IV: VSD and Pulmonary stenosis
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VSD managementVSD managementVSD IA (Roger):Follow upVSD IA (Roger):Follow upVSD IIa: Surgery ifVSD IIa: Surgery if
Medical treatment failureMedical treatment failurePulmonary pressure increasingPulmonary pressure increasingLV too largeLV too largeMore than 1 yearMore than 1 year
VSD IIb: Surgery if single VSD, PA banding VSD IIb: Surgery if single VSD, PA banding multiple VSD patient <9month total multiple VSD patient <9month total correction aftercorrection afterVSD+IA, VSD + RVOT obstruction: Surgery VSD+IA, VSD + RVOT obstruction: Surgery
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VSD type IB ????VSD type IB ????+ 75% of VSD+ 75% of VSD+ Wait and see ?+ Wait and see ?+ Osler, AR, LV hemodynamic …+ Osler, AR, LV hemodynamic …+ Surgery complication?+ Surgery complication?+ Intervention complication?+ Intervention complication?
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IntroductionIntroductionnn The transcatheter occlusion of VSD is The transcatheter occlusion of VSD is
considered to be one of the most considered to be one of the most sophisticated and complex interventional sophisticated and complex interventional procedures. Percutaneous closure of a procedures. Percutaneous closure of a perimembranous VSD is valuable perimembranous VSD is valuable alternative to surgical closure. alternative to surgical closure.
nn Complications are embolization of the Complications are embolization of the device and arrhythmic (double disk device)device and arrhythmic (double disk device)
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IntroductionIntroductionnn The PM VSD have edge, ampulla'sThe PM VSD have edge, ampulla's (triangle) (triangle)
form in 90%, look like type A of PDA. Using form in 90%, look like type A of PDA. Using PDA device for VSD closure is reasonable.PDA device for VSD closure is reasonable.
nn Carefully patient’s selection and long term Carefully patient’s selection and long term follow up is very important.follow up is very important.
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IntroductionIntroduction
nn The PDA device (Amplatzer Duct The PDA device (Amplatzer Duct Occluder, Cocoon Duct occluder) is stable Occluder, Cocoon Duct occluder) is stable and adapter with 6 to 8F sheath (smaller and adapter with 6 to 8F sheath (smaller than VSD device with same left disk than VSD device with same left disk diameter)diameter)
nn The fist VSD close by PDA device in The fist VSD close by PDA device in Vietnam Heart Institute in December, Vietnam Heart Institute in December, 2002 2002
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The Duct Occluder DeviceThe Duct Occluder Devicenn The occluder is a coneThe occluder is a cone--shaped device 7 mm in shaped device 7 mm in
length made oflength made of a 0.004a 0.004--inch Nitinol wire mesh. inch Nitinol wire mesh. nn Prostheses are currentlyProstheses are currently available in sizes available in sizes
ranging from 5ranging from 5--4 to 164 to 16--14 mm at increments14 mm at increments of of 2 mm.2 mm.
nn Delivery sheath from 6F to 8F.Delivery sheath from 6F to 8F.nn The price is reasonable.The price is reasonable.
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ProtocolProtocol
n VSD was crossed from the LV with a coronary catheter (JR4) or AM catheter.
n Guide wire Terumo was advanced into the pulmonary artery or the vena cava.
n The tip of the Terumo wire was captured with a snare to create an arterio-venous loop.
n 6 to 8F long sheath was introduced over the loop wire to the ascending aorta.
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ProtocolProtocol
n The 6F to 8F sheath (adapted to Device size selection) was introduced over the loop wire to the ascending aorta.
n The left disk open just beneath aortic valve and pull back to the VDS.
n After check by angiography, the body of device was open in the defect.
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ProtocolProtocoln Angiograms of the LV and the aorta were
performed after device detachment to assess device position and the efficacy of closure.
nn Echocardiographic assessment included Echocardiographic assessment included device arm position anddevice arm position and integrity, contact integrity, contact with valve structures, residual flow with valve structures, residual flow throughthrough the defect.the defect.
n Follow-up studies with clinical examination and angiogram were carried out at various times after coil or device implantation.
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Resultsn 133 patients with clinical evidence of a VSD.n December 2002 – June 2009 n The body weight ranged from 6.5 to 58 kg. n The sizes of the defect (Right Ventricle size)
ranged from 3 to 8 mm, measured by means of TTE and or angiography.
n Qp/Qs varied from 1.5 to 3.2 mean 1.8n Follow up: 6 month (max 7 years)
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Resultsn ADO was successfully implanted in 128
patients (97%). n Device embolization (1 case), not proper
position (1), too big VSD (2) and AO valve touched (1).
n There were no procedure‘s complications: No impairment of the tricuspid and aortic valve, and no important arrhythmias.
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Device size
12
45
52
13
4 20
10
20
30
40
50
60
6*4 8*6 10*8 12*10 14*12 16*14
Device size%
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Resultsn Angiogram complete occlusion was
observed in 120 cases (93%) after 10 minuets.
n Residual shunt was demonstrated after 24h is 6% (7 cases) and after 1 month is 2 cases (2%).
n No AV bloc transitory after 6 month follow up (max 7 year)
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Discussionn Umbrella-shaped devices have been
proved to be suitable and effective in occlusion of muscular VSD and perimembranous VSD.
n The ADO have high rate complete closure (98% after 1 month follow up). The ADO price is cheaper than another device.
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Tips and Tips fulln For the choice of a proper size of the device,
it is important to measure the diameter of VSD (right and left ventricle size).
n Using echocardiography or angiography, the smaller diameter of the oval VSD can be measured.
n 2 device can be use for 1 patient
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Conclusionn The Amplatzer Duct occluder has
demonstrated its capability of avoiding impairment of the aortic and tricuspid valve function, and arrhythmia problems.
n Further data are necessary to assess the efficacy and safety of this device application