HANDOUT - Comprehensive Echocardiographic Assessment of Adults with Congenital Heart Disease.pdf
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Transcript of HANDOUT - Comprehensive Echocardiographic Assessment of Adults with Congenital Heart Disease.pdf
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Comprehensive Echocardiographic Assessment of Adults with Congenital Heart Disease
Echocardiography of Complex Congenital Heart Disease
Naser M. Ammash, M.D., FACC
Frank Cetta, M.D., FACC, FASE
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Disclosure Summary To CME Participants
As a provider accredited by ACCME, College of Medicine, Mayo Clinic (Mayo School of CPD) must ensure balance, independence, objectivity and scientific rigor in its educational activities. Course Director(s), Planning Committee Members, Faculty, and all others who are in a position to control the content of this educational activity are required to disclose all relevant financial relationships with any commercial interest related to the subject matter of the educational activity. Safeguards against commercial bias have been put in place. Faculty also will disclose any off label and/or investigational use of pharmaceuticals or instruments discussed in their presentation. Disclosure of this information will be published in course materials so those participants in the activity may formulate their own judgments regarding the presentation.
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Disclosure Summary
Listed below are individuals with control of the content of this program who have disclosed
Relevant financial relationship(s) with industry
None
Listed below are individuals with control of the content of this program who have disclosed
No relevant financial relationship(s) with industry
Gina A. Anderson, B.A
Naser M. Ammash, M.D., FACC
Frank Cetta, M.D., FACC, FASE
I do intend to discuss off-label/investigative uses(s) of the following commercial products(s)/device(s):
None
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Objectives
• Identify the hemodynamic issues that impact adults with various complex congenital heart diseases
• Review long-term outcome of various complex congenital heart diseases after surgical repair
• Report the impact of novel valve repair techniques for patients with complex congenital heart diseases
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Distribution of Age at Death in Patients With Congenital Heart Disease in 1987-1988 and 2004-2005
051015202530
<1
1-4
5-9
10-14
15-19
20-24
25-29
30-34
35-39
40-44
45-49
50-54
55-59
60-64
65-69
70-74
75-79
80-84
85-89
≥90
Khairy et al: JACC 56:1149, 2010
Age at death (years)
Proportion of all deaths (%)
Year
1987-1988
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Distribution of Age at Death in Patients With Congenital Heart Disease in 1987-1988 and 2004-2005
051015202530
<1
1-4
5-9
10-14
15-19
20-24
25-29
30-34
35-39
40-44
45-49
50-54
55-59
60-64
65-69
70-74
75-79
80-84
85-89
≥90
Khairy et al: JACC 56:1149, 2010
Age at death (years)
Proportion of all deaths (%)
Year
1987-1988
0 5 10 15 20 25 30
Year
2004-2005
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Tetralogy of Fallot
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Tetralogy of Fallot
Pink tetralogy Classic tetralogy Pulmonary atresia
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Blalock-Taussig Shunt
Right common carotid artery
Right subclavian artery
Right pulmonary artery
Aorta
Pulmonary trunk
Brachiocephalic trunk (innominate artery)
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Surgical Repair of TOF
Residua and sequelae are common
Late morbidity and mortality
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26-Year-Old Repaired TOF in 1981 Dyspnea, MR Noted Pre-Partum Evaluation in 2005
29 mm mosaic porcine valve
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26-Year-Old Repaired TOF in 1981 Dyspnea, MR Noted Pre-Partum Evaluation in 2005
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26-Year-Old Repaired TOF in 1981 Dyspnea, MR Noted Pre-Partum Evaluation in 2005
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Survival Without Reoperation Following TOF Repair Mayo Clinic 1955-1960, n=163
0
20
40
60
80
100
0 5 10 15 20 25 30
Murphy, 1993
Years
Su
rviv
al (%
)
88%
PR noted in 80% of patients
PR has detrimental long-term effect on RV size and function
PR is most common indication for re-operation
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Pulmonary Regurgitation After TOR Repair Determinants
• Residual PV abnormality (bicuspid in 50%)
• Pulmonary valvotomy/valvectomy
• Extensive ventriculotomy/infundibulectomy
• Trans-annular patch repair
• Pulmonary annulus size
• Peripheral pulmonary artery stenosis
• Acquired CV/pulmonary diseases Pulmonary HTN
• Shunts, HTN, CAD, COPD/asthma, OSA
Ammash et al: CHD, 2007
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Hemodynamic Substrate in for VT and SCD 465 Patients Following TOF Repair
Echo Within 12 Months
0
20
40
60
80
100
RVSP (>60 mm Hg) TR (≥ moderate) PR (≥ moderate)
Gatzoulis et al: Lancet 356:975, 2000
Patients
(%
)
VT
SD
AF
Arrhythmia-free
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Pulmonary Regurgitation Severity Color Doppler
• Mild: PR noted in RVOT not PA
• Moderate: PR noted in the main PA
• Severe: PR noted in the branch PAs
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Pulmonary Regurgitation Severity PW or CW Doppler
• Rapid decrease throughout diastole
• Return to baseline before end of diastole if low PA diastolic pressure
• High EDPR suggests pulmonary HTN
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Pulmonary Regurgitation Severity PW or CW Doppler
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Pulmonary Regurgitation Severity PR Index
Li et al: AHJ 147:165, 2004
PR index <0.77 identified severe PR
Predictive accuracy 95%
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Pulmonary Regurgitation Severity Pressure Half Time
Silversides et al: JASE 16:1057, 2003
P ½t <100 msec identified severe PR:
Sensitivity 76%, specificity 94%
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What to do?
When to intervene?
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Pulmonary Regurgitation After TOF Repair
• PR tolerant for many years – subtle on PR
• Lack of symptoms doesn’t reflect RV dysfunction
• Degree of adaption
• Long standing PR
• ↑ RVEDV
• TV annular dilation
• TV regurgitation
• ↓ RV dysfunction
• ↓ FAC
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Optimal Timing of Intervention in PR
0
20
40
60
80
100
0 10 20
Years
Surv
ival
Severe PR RV enlargement
RV dysfunction
Symptoms
Time ?
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Pulmonary Regurgitation After TOF Repair Indications for Intervention
• Symptoms, decline in exercise capacity
• Moderate-Severe or progressive RVE or dysfunction
• Symptomatic or sustained atrial arrhythmias
• Spontaneous VT or inducible VT
• QRS prolongation (>180 msec)
• LV dysfunction (usually after RV dysfunction)
• RVOT obstruction: MIG >50 mm Hg or RVSP 70% systole
• Residual shunt, significant TR
• Early LV dysfunction Ammash et al: CHD, 2007
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TOF repair
RVOT complications
Arrhythmias
Residual VSD
AV and TV regurgiation
RV, LV dysfunction
Pulmonary hypertension
Endocarditis
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Echo Examination Post TOF Repair Comprehensive
• Level and severity of pulmonary stenosis
• Severity of pulmonary and TV regurgitation
• RV and PA systolic pressures
• RV size and function
• Residual atrial or ventricular septal defect
• LV size and function
• Ascending aorta dilation/AR
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RV Dysfunction After TOF Repair Visual Estimate
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Selected Indices of RV Contractility Functional parameters Normal value Load dependence
RVEF (%) 61±7 (45-76)
>40-45 +++
RVFAC (%) >32 +++
TAPSE (mm ) >15 +++
Small annular (cm/s) >12 +++
Strain
Basal: 19±6
Mid: 27±6
Apical: 32±6
+++
Strain rate (s-1)
Basal: 1.50±0.41
Mid: 1.72±0.27
Apical: 2.04±0.41
++
RVMPI 0.28±0.04 ++
dP/dt max (mm Hg/s) 100-250 ++
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PR Post TOF Repair MRI
Normal RVEDV ≤115 mL/m2
Normal RVESV ≤47 mL/m2
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RVEDV Before and After PVR in TOF MRI Study in 17 Patients
• Presence of either
• RVEDV >170 cc/m2 or
• RVESV >85 cc/m2
Therrien: AJC, 2005
No normalization
of RV volumes
150 < RVEDV <170
RV volume ↓ a mean of 28% RVEF does not change Oosterhof: Circ 116, 2007
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RV Dysfunction After TOF Repair Diastolic Dysfunction
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RV Dysfunction After TOF Repair Diastolic Dysfunction
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43-Year-Old Lady Status-Post TOF Repair at Age 14 VT Status-Post RFA 8 Years Ago, Now DOE
RVSP = 56 + 10
= 66 mmHg
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44-Year-Old Repaired TOF With Dyspnea
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44-Year-Old Repaired TOF With Dypnea
PASP = 66 – Peak PV grad
= 66 – 10 = 56 mm Hg
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Pulmonary HTN in r-TOF
• Prior systemic to pulmonary shunt
• Distal pulmonary stenosis
• Residual shunt
• LV dysfunction (systolic, diastolic)
• Associated MV disease
• Sleep apnea
• Chronic lung disease
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43-Year-Old Lady Status-Post TOP Repair at Age 14 VT Status-Post RFA 8 Years Ago, Now DOE
Moderate – Severe left PS from prior Lt BT
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43-Year-Old Lady Status-Post TOP Repair at Age 14
Hybrid repair: Lt PA stent + Pulmonary Valve Replacement
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Pulmonary Regurgitation After TOF Repair
• Important determinant of morbidity/mortality
• Dyspnea, RVE/D, arrhythmia, LVD, SCD
• Modified approach of repairing TOF
• Early identification/evaluation by expert
• Timing of intervention can be challenging
• PR assessment is only 1 component of comprehensive Echo examination
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Tetralogy of Fallot Anomalous CA
Anomalous CAD in 3-7%
LAD from RCA in TOF
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Pulmonary Regurgitation After TOF Repair Valve Replacement Options
Heterograft
Percutaneous
Homograft
Mechanical
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Melody Valve
• Bovine jugular venous valve segment
• Platinum-iridium stent
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Indications Melody Valve FDA Approved Under HDE – 2010
• Circumference RVOT conduit with ≥16 mm diameter at time of original implantation
• Inner diameter ≤22 mm
• Regurgitation and/or stenosis
• ≥ moderate PR
• RVOT mean gradient ≥35-40 mm Hg
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Post-Implant Intracardiac Echo
Extending the “lifespan” of RV to PA conduits
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Safety Considerations
Procedural Risks
• Coronary artery compression
• Conduit rupture
• Device embolization
Device Risks
• Stent fracture
• Pulmonary emboli
• Endocarditis
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Single Ventricle Univentricular Hearts
Double inlet Single inlet Common inlet
Mitral valve atresia
Hypoplastic LHS
Hypoplatic RHS
Pulmonary atresia/IVS
Heterotaxia
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24-Year-Old Tricuspid Atresia
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31-Year-Old Astronomer With DILV
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Single Ventricle Adult Presentation
• Non-operated
• Unobstructed pulmonary circulation
• Eisenmenger syndrome
• Pulmonary stenosis (at or below PV)
• Balanced circulation with cyanosis
• Normal pulmonary pressure
• Palliated if normal PAP and ventricular fracture
• Systemic to pulmonary shunt
• Fontan operation
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Single Ventricle Adult Presentation
• Non-operated
• Unobstructed pulmonary circulation
• Eisenmenger syndrome
• Pulmonary stenosis (at or below PV)
• Balanced circulation with cyanosis
• Normal pulmonary pressure
• Palliated if normal PAP and ventricular fracture
• Systemic to pulmonary shunt
• Fontan operation
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31-Year-Old Astronomer With DILV
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Eisenmenger Syndrome
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VSD Eisenmenger
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Eisenmenger
Cardiovascular
Glomerular sclerosis
Infection
Gall stones
Pulmonary
Hypertrophic osteoarthopathy
Neurologic
Hematologic
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Syndrome in Eisenmenger Syndrome
0
20
40
60
80
100
0 2 4 6 8 10 12 14
Diller et al: EHJ 27:1737, 2006
Age (years)
Su
rviv
al (%
)
171 patients Age 32±12 years
Eisenmenger patient P=0.02
Predicted survival
Simple lesion Complex
lesion
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Single Ventricle Adult Presentation
• Non-operated
• Unobstructed pulmonary circulation
• Eisenmenger syndrome
• Pulmonary stenosis (at or below PV)
• Balanced circulation with cyanosis
• Normal pulmonary pressure
• Palliated if normal PAP and ventricular fracture
• Systemic to pulmonary shunt
• Fontan operation
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26-Year-Old With DILV and Sub PS
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26-Year-Old With DILV and Sub PS
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Single Ventricle Adult Presentation
• Non-operated
• Unobstructed pulmonary circulation
• Eisenmenger syndrome
• Pulmonary stenosis (at or below PV)
• Balanced circulation with cyanosis
• Normal pulmonary pressure
• Palliated if normal PAP and ventricular fracture
• Systemic to pulmonary shunt
• Fontan operation
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Blalock-Taussig Shunt
Right common carotid artery
Right subclavian artery
Right pulmonary artery
Aorta
Pulmonary trunk
Brachiocephalic trunk (innominate artery)
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Single Ventricle
• Glenn anastomosis: SVC to right PA
Classic bi-directional
Normal LVEF
LVEDP <12 mm Hg
TPG <10 mm Hg
MPAP <14-18 mm Hg
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Glenn Anastomosis Isolated or TCP Connection
• Suprasternal short axis view
• Use low Nyquist limit and filter
• Low velocity biphasic forward flow
• Laminar color flow
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Glenn Anastomosis Isolated or TCP Connection
Need to exclude obstruction by color/spectral
If high velocity or Mosaic color Doppler
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Fontan Operation
• Fontan is not a specific procedure, but rather a concept
• Diverting all systemic venous return into the pulmonary artery bypassing RV
• Combination of different surgeries
• Palliation for the functionally Univentricular heart or ‘single’ ventricle
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Unique Fontan Physiology
• Pulmonary flow does not have a ventricular pump
• Systemic ventricular function provides energy for transpulmonary flow
• Intrathoracic pressure changes also help
• Positive pressure ventilation poorly tolerated
• Pulmonary arterial flow obstructions will behave like venous stenosis
• Even small gradients can be bad
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Optimal Candidates for Fontan Revised Criteria
1. Normal PA size and distribution
2. Low mean PA pressure <15 mm Hg
3. Normal pulmonary vascular resistance
4. Normal LV systolic and diastolic function
5. ± no AV valve regurgitation
Optimal results in those with optimum selection Any deviation can result in Fontan failure
Allow smooth stream-lined BF from veins to lungs
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Echocardiographic Essentials Comprehensive Assessment
1. Fontan pathway
2. Ventricular size and function
3. Atrioventricular valve
4. Ventriculoarterial connection
5. Pulmonary veins and ASD
6. Right Atrium
7. Hepatic veins and inferior vena cava
8. Ascites and pleural effusion
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Fontan Operation Historical Perspective
Kreutzer, 1973 Fontan, 1971
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Fontan Operation Modifications
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Fontan Operation Modifications
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Post-Fontan Examination
• Acyanotic unless residual shunt
• Normal JVP except
• Fontan obstruction/failure
• Atrial arrhythmia, flutter waves ?
• Single S2 (palpable A2 if anterior aorta)
• No murmur except
• AVV regurgitation or sub AS
• Right sided CHF if complicated
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Fontan
Fontan obstruction
Cyanosis
Ventricular dysfunction
Liver cirrhosis
Protein losing enteropathy
RA thrombi embolism
Arrhythmia
Pul V Obst; Sub AS; Co A
AV valve regurgitation
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Echocardiographic Essentials Comprehensive Assessment
1. Fontan pathway
2. Ventricular size and function
3. Atrioventricular valve
4. Ventriculoarterial connection
5. Pulmonary veins and ASD
6. Right Atrium
7. Hepatic veins and inferior vena cava
8. Ascites and pleural effusion
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Echocardiographic Essentials Fontan Pathway
• Rely on surgical record to identify type of connection
• Cavopulmonary anastomosis: Classic Glenn
• Bidirectional cavopulmonary connection
• Atriopulmonary connection
• Extracardiac or intracardiac conduit from IVC to main or right PA with bidirectional cavopulmonary connection
• Intracardiac tunnel from IVC to right PA with bidirectional cavopulmonary connection
Challenging anatomic and surgical variations
Use all windows in Fontan assessment
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24-Year-Old SV With RAA to RVOT Fontan
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24-Year-Old SV With RAA to RVOT
Pulsatile Fontan flow
Peaks in late systole and diastole
Both increase with inspiration
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RA Appendage to PA Connection
• Horizontal plane
• Modified parasternal short axis
• Subcostal window
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RA Appendage to PA Connection
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25-Year-Old With PA/IVS, Status-Post Fontan Intracardiac Conduit
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25-Year-Old With PA/IVS, Status-Post Fontan Intracardiac Conduit
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Lateral Tunnel Fontan
LV
Lateral Right
Atrial Tunnel
LA
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21-Year-Old With TA, Status-Post Fontan Lateral Tunnel
LV
Lateral Right
Atrial Tunnel
LA
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Tricuspid Atresia, Normally Related GA Extracardiac Fontan
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Tricuspid Atresia, Normally Related GA Extracardiac Fontan
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‘Fenestrated’ Fontan
• Purposeful placement of small (3-4 mm) ASD
• Provides constant preload to ventricle
• Decreases in systemic venous pressure (pop off)
• Causes mild cyanosis (R to L shunt)
• Potential for paradoxical embolism
• Echo assessment
• Presence of gradient through
• AP4C, subcoastal
• Location and size
• Agitated saline (optional)
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Fenestration Physiology
• Any ASD in Fontan will always show R L shunt
• Mean RAP is always > LAP
• Mean gradient of fenestration flow reflects trans-pulmonary gradient (5-8 mm Hg)
Any TPG of >8 mm Hg requires an explanation
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Echocardiographic Essentials Ventricular Size and Function
• Systolic function
• 2D qualitative assessment of volume and global function evaluation
• Diastolic function
• AV valve, annulus and pulmonary veins
• Spectral and tissue Doppler
Echocardiographic Option
Myocardial performance index
Systolic rates of ventricular pressure change (Dp/Dt)
Fractional area shortening
Annular systolic DTI EF with 2D or 3D imaging
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Echocardiographic Essentials
• Pulmonary veins
• 2D assessment with color and spectral Doppler
• Assess for obstruction of right pulmonary veins
• Best views: AP4C, subcoastal
• AV valve connection
• 2D and Doppler assessment of AV valve regurgitation presence and severity (PLAX, PSAX, AP4C)
• PISA assessment of RV/ERO, vena contracta
• Systolic flow reversal in pulmonary veins
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11-Year-Old: TA, TGA, Sub AS and Coarction Fontan at Age 4, Sub AS x2, AVR
RPA
RA
LPA
Fontan
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11-Year-Old: TA, TGA, Sub AS and Coarction Fontan at Age 4, Sub AS x2, AVR
Fontan conversion to intra-atrial conduit
Cryoablation for atrial flutter
R P vein
RA L P vein
LA
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23-Year-Old With CHF
• Hypoplastic right HS
• TV hypoplasia, near pulmonary atresia
• Right BT at 3 days old
• Pulmonary vavlotomy at 2 years old
• Modified Fontan at 15 years old (RA to right PA)
• Edema, ascites, DOE in August 2007
• Atrial fibrillation
• New loud systolic murmur
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23-Year-Old With CHF and PLE
1. Conversion to IA conduit BDCPA
2. Patch closure of TV
3. Lt AVV annuloplasty ring
4. Bi-atrial maze
5. Fenestration in atrial septum
1AT: 304 to 27 mg/dL
T. protein: 5.5 to 6.5 g/dL
Albumin: 3-3 to 6 g/dL
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35-Year-Old With Tricuspid Atresia Fontan RAA to PA With PLA
Not suitable for Fontan conversion
LVEDP 16 mm Hg, MR, Cr = 2.8
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35-Year-Old With Tricuspid Atresia RAA to PA Fontan
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Echocardiographic Essentials Comprehensive Assessment
1. Fontan pathway
2. Ventricular size and function
3. Atrioventricular valve
4. Ventriculoarterial connection
5. Pulmonary veins and ASD
6. Right Atrium
7. Hepatic veins and inferior vena cava
8. Ascites and pleural effusion
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Indications for TEE in Fontan
• Atrial arrhythmia necessitating cardioversion
• Severe spontaneous Echo contrast
• Systemic/pulmonary embolization
• Unexplained cyanosis
• Uncertainty about ventricular function or AV valve regurgitation
• Uncertainty about pulmonary venous obstruction
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Adult Complex CHD Survivor
• No longer rare or odd
• Natural survivors
• Post-repair
• Challenging problems
• Repair or palliation
• Residua and sequelae
• Many need re-intervention
• Require specialized lifelong care
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Wilhelm Ebstein
1836-1912
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Ebstein Anomaly
• June 28, 1864
• 19-year-old laborer admitted to Allerheiligen Hospital in Breslau with shortness of breath and palpitations
• Died on July 6th
• Ebstein performed an autopsy the next day
Ebstein: Arch Anat Physiol 238, 1866
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Thin, Translucent, Redundant, Sail-like Anterior Leaflet
Courtesy: William Edwards Collection
Anterior TV leaflet in Ebstein
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Normal Delamination (Separation) of TV from RV Myocardium
RA
RV
EC
RCA RA
RV
EC
TV
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Failed TV Delamination in Ebstein Anomaly
RA
RV
RA
RV
Atrialized
RV
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Ebstein Anomaly Genetics
• 1/210,000 live births
• MYH7 mutation + LVNC
• NKX 2.5 mutation
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Ebstein Presentation Varies
• Asymptomatic
• Cyanosis (ASD/PFO = 30-78%)
• Arrhythmia (WPW = 15%)
• Dyspnea on exertion
• Edema
• Cardiomegaly
• Intrauterine death
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Clinical Evaluation Pearls
• 60% diagnosed age <1 year
• 38% cyanotic
• 66% of neonates & infants
• 10% diagnosed prenatally
• Murmur most common in older children
• JVP frequently normal
• 10% not diagnosed until adulthood
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Spectrum of Presentation
Severe Mild
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The Child With This CXR…
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… Had This Echo
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Typical Ebstein ECG
Courtesy: Bryan Cannon, M.D.
Prolonged PR interval, marked RBBB, very large P waves
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Atypical Ebstein ECG Normal PR, No RBBB Accessory Pathway
Courtesy: Bryan Cannon, M.D.
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Approach to Patient With Ebstein & WPW
• 15% of patients with Ebstein anomaly
• Usually right-sided pathway
• RBBB + right-sided accessory path = synchronous RV/LV contraction narrow QRS
• EPS/RFA prior to OR for TV repair
• Long-term surveillance, high recurrence of atrial arrhythmia
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Failed Delamination Results in
• Adherence of leaflets to underlying RV myocardium
• Displacement of the anular hinge points
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Displacement septal
(8 mm/m2) and posterior
Dilated TVA
Dilated RA
Enlarged
atrialized RV
Small
functional RV
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Apical Displacement Index Normal <8 mm/m2 Ebstein Anomaly
RA
RV
LV
23 mm/1.5 m2 = 15.3 mm/m2
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Spiral Displacement of TV Anterior/Apical Rotation of Functional Orifice
Modified from Schrieber C Anderson: J Thorac Cardiovasc Surg, 1999
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Ebstein Anomaly
• Spectrum of abnormalities of TV leaflets and RV myocardium
• Abnormalities of all leaflets
• Anterior, inferior, septal leaflets
• Delamination issues
• Inferior displacement and anterior/apical rotation of the septal leaflet
• More than valve problem, but rather a cardiomyopathy
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Repairs for Ebstein Anomaly
• Danielson
• da Silva
• Ross
• Hardy
• Carpentier
• Quaegebeur
• Schmid
• Vargas
• Starnes
• Hetzer
• Meisner
• Sebening
• Kaushal
• Knott-Craig
• Friesen
• Chauvaud
• Ullmann
• Kaneko
• Wu
• Sano
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Gordon K. Danielson Joseph A Dearani
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Ebstein Anomaly Indications for Operation
• exercise tolerance, cyanosis
• Progressive RV dilation
• Before significant RV dysfunction
• Onset, progression of atrial arrhythmias
• Earlier operation if TV repair is likely
• Prior to LV dysfunction
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Danielson Repair 1974
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Pre-Cone Era
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Overall Survival
0
20
40
60
80
100
0 5 10 15 20
Years
Surv
ival (%
)
539 332 200 121 54
10 year = 84.7%
20 year = 71.2%
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Multivariate Predictors of Overall Mortality
HR P
Mild mitral regurgitation 6.84 0.01
Mild PS 3.20 0.01
Moderate ↓ RV function 2.76 0.01
Accessory tract ablation 0.20 0.01
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Late Survival Free of Reoperation
0
20
40
60
80
100
0 5 10 15 20
Years
Late
surv
iva
l fr
ee o
f
reopera
tion (
%)
506 307 166 91 37
10 year = 74.1%
20 year = 46.1%
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Late Functional Status
NYHA class I or II 83%
NYHA class III or IV 16%
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• RV dysfunction
• Mitral and RVOTO surgery
• Correlation with ↑ early mortality
LV dysfunction correlated with ↑ late mortality
Early referral
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Anatomic Tricuspid Valve Repair
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Surgical Delamination
Dearani et al, 2008
AL
IL
SL
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Cone Repair for Ebstein Anomaly
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Cone Technique Repair at True Anatomic Annulus via Surgical Leaflet Delamination
Preop Postop
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Cone Repair
Preop Postop
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Tricuspid Valve Repair in Pediatric Patients With Ebstein Anomaly
The Mayo Clinic Experience in the Current Era
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Mayo Clinic Cone Repair <21-Years-Old June 2007-December 2012
88
Excluded n=4 Cone repair attempted
n=84
Early reop n=3
Early death n=1
(19 d, ECMO) Cone success
n=80
Valve replaced n=1
Re-repair n=2
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Mayo Clinic Cone Repair <21-years-old June 2007-December 2012
82/84 (98%) repaired by time of hospital discharge
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Additional Surgical Procedures
ASD/PFO closure 70%
Surgical Maze 33%
Bidirectional Glenn 31%*
*3 prior
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Cone Repair Outcomes
Early mortality 1/84 (1.2%)
Early reoperation for TV
(prior to hospital discharge)
3/83 (3.6%)
2 re-repair
1 replaced
Late mortality (MVA) 1/82 (1.2%)
Late re-re-repair 1/81 (1.2%)
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Cone Repair Early Breakdowns
• Age, gender not associated with early Cone failure
• Muscularization of anterior leaflet and absence of septal leaflet – factors that may preclude Cone repair
• Steep learning curve
No early Cone
breakdowns since 2010
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Echo Follow-Up Data
Follow-up data available 94%
Time from hospital discharge 0.8±0.2 years
(0-5.5 years)
Tricuspid stenosis (>5 mm Hg) 6/81 (7.4%)
Grade of TR on last Echo
None/mild TR* 83%
Moderate 13%
Severe 4% *Annuloplasty ring use associated with less short-term TR (P=0.01)
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Conclusions/Speculations Ebstein Anomaly 2013
• 98% successful Cone repair in young
• Intervene prior to RV dysfunction
• Selective use of 1.5 ventricle strategy
• Cone anatomic repair for most valve morphologies
• Durable repair in short term follow-up
• Replacement still important in older adult +/- Maze
• Long-term surveillance of RV and TV
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Complete TGA After Surgical Correction
Management After Atrial and Arterial Switch Operations
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d-TGA
A Brief Review
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Complete-TGA
Ao PA
LV RV
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• Complete TGA or (d-TGA)
• Atrial switch for TGA
• Mustard and Senning
• Arterial switch for TGA
• Jatene with LeCompte
• Rastelli for TGA + PS + VSD
• Congenitally-corrected TGA (L-TGA)
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All patients should be seen periodically in a
center where expertise in the clinical evaluation,
imaging and hemodynamic assessment of adult
congenital heart disease is available
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Complete-TGA Mustard Operation
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Atrial Switch Operations Mustard or Senning
• 20-year-old survival = 80%
• Successful pregnancies
• Late attrition from
• RV failure
• Arrhythmia
• Reduced exercise capacity
• 61% late gadolinium enhancement (fibrosis)
Wilson et al: JACC, 1998
PV
LV
IVC
RV
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Complete-TGA Status-Post Mustard
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Complete-TGA Status-Post Senning
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Complete-TGA Imaging After Mustard/Senning
*Parasternal long-axis image demonstrating the superior vena cava portion of systemic venous baffle as it enters left atrium; portion of PV is also visualized in this image
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Complete-TGA Imaging After Mustard/Senning
Apical 4-chamber 2-D and color Doppler assessment of patient after Senning operation with significant PV pathway obstruction (arrow); proximal SV is also visualized in this image
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Complete-TGA Imaging After Mustard/Senning Echocardiography in Pediatric and Adult Congenital Heart Disease
IVC after atrial switch procedure in d-TGA
Tilting into true apical 4-chamber view from more posterior PV pathway Left: IVC
3-D images from apical 4-chamber projection *Left atrium #Right atrium
* * #
#
IVC
LV
PV
LV
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Evaluation of Adult With Transposition After Atrial Switch Operation
Stent placement after Mustard operation with history of IVC baffle obstruction
Stent
Stent
Stent
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Long-Term Outcome After Mustard
• 45 patient cohort assessment in 1997
• Follow-up decade later
• Mean age: 25 years (19-37)
• Time from Mustard: 24 years (18-33)
• 87% alive without transplant
• 54% persistent rhythm abnormality
• 26% pacemaker
Ebenroth & Hurwitz: Congenit Heart Dis, 2007
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Issues After Atrial Switch Mustard or Senning
• Rhythm problems
• 40% NSR at 20 years post-op
• Fate of the systemic RV
• Progressive TR
• RV systolic dysfunction
• Venous baffle obstruction
• Mustard: SVC > IVC
• Senning: Pulmonary veins > systemic veins
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Complete-TGA Status-Post Mustard Operation
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Complete-TGA Status-Post Mustard Operation
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Complete-TGA Status-Post Mustard Operation
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Complete-TGA Status-Post Mustard Operation
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Complete-TGA Status-Post Mustard Operation
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Systemic RV Dysfunction
“The management is the same as LV dysfunction in a ‘normal’ heart”
• Beta-blockade
• Usually avoid
• Patients prone to bradyarrhythmia
• Afterload reduction ?
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Systemic RV Dysfunction ACE Inhibition in Complete TGA
• 14 patients status-post Mustard
• Enalapril >6 months
• No improvement
• Exercise tolerance
• Hemodynamics
• Remodeling
• 9 (64%) increased their VO2max by 27%
0
5
10
15
20
25
30
35
Before ACEinhibitors
After ACEinhibitors
Hechter et al: Am J Cardiol, 2001
VO
2m
ax (
mm
Hg
-1 m
in-1
)
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Systemic RV Dysfunction Limited Data
• Dore et al: Circulation, 2004
• Losarten vs placebo trial (n=29)
• No improvement in exercise capacity or reduction in NT-proBNP levels
• Giardini et al: Int J Cardiol, 2006
• Carvedilol in systemic RV (n=8)
• Safe and + RV modeling
• Severe case reports of CRT in systemic RV
• Shortening of the QRS
• Symptom improvement of CHF
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Contraction of Systemic RV
• Normal RV free wall shortening
• Longitudinal > Circumferential
• Systemic RV (n=14) status-post Senning
• Circumferential > Longitudinal
• Adaptive effect, but no torsion ?
Pettersen et al: JACC, 2007
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Assessing Function of Systemic RV RV Strain in Normal RV and LV and in Patients With d-TGA
Helle-Valle et al: J Am Coll Cardiol 49:2450, 2007
Normal RV Systemic RV Normal LV
200 ms
Longitudinal
strain (%)
Circumferential
strain (%)
ECG
0
-15
-30
0
-15
-30
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Atrial Switch Operations MRI Evaluation
• 61% late gadolinium enhancement (fibrosis)
• Correlated with age
• Inversely with RVEF
• 44% of these with full-thickness anterior free wall involvement
Royal Brompton Group: Circulation, 2005
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Case
28-year-old with TGA
Status-Post Senning
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Please submit movie file:
4senningPVobs.mpg
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Please submit movie file:
4senningPVobscolor.mpg
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Pulmonary vein baffle mean gradient = 14 mm Hg
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Intra-op TEE
Please submit movie file:
prestnet.mpg
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Mean Gradient = 12 mm Hg
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Hybrid Procedure
Please submit movie file:
wire.mpg
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Please submit movie file:
4senningPVobscolor.mpg
Please submit movie file:
stentdeploy.mpg
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Please submit movie file:
postcolor.mpg
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Post-Stent Gradient = 4 mm Hg
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5 Months Later
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5 Months Later
Please submit movie file:
fusenningPVstentcolor.mpg
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Re-Intervention After Mustard or Senning
• Pacemaker
• Tricuspid valve repair/replace – rarely
• Venous baffle stent placement
• Late arterial switch – rare
• Cardiac transplantation
• But not too soon
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Transposition of Great Arteries Complete-TGA
Arterial Switch
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Status-Post Arterial Switch (ASO)
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Issues After Arterial Switch
• Early
• Coronary insufficiency
• PA stenosis after LeCompte
• Late
• Progressive aortic regurgitation
• Generally
• Few long-term rhythm or ventricular function issues
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AR After ASO
• 15% at 6 years post
• 30% at 15 years post
• Only 1.4% required reoperation
• Increased with
• VSD
• Older age at ASO
• Prior PA band
• PA – aorta size mismatch
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Rastelli Operation TGA + VSD + PS
Giancarlo Rastelli
1933-1970
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Rastelli Operation TGA + VSD + PS
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Issues After Rastelli Repair
• 1964-2001
• 1,270 patients pulmonary ventricle pulmonary artery conduit
• 232 with TGA
• Freedom from reop worst in TGA
• TGA-PS-VSD: Shunt early
• Hold off on conduit until 2-3 years old
Dearani et al: Ann Thorac Surg, 2003
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Surgical – Corrected TGA Summary
• Long-term outlook is good
• Atrial switch
• Long-term rhythm issues
• Surveillance for RV dysfunction, medical management?
• Arterial switch
• Progressive aortic regurgitation
• Rastelli
• RV PA conduit replacement
• Sub-AS surveillance
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