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Congenital Heart Disease. Incidence and Etiology. Incidence of 1% in general population. VSD is most common CHD TOF is most common cyanotic CHD TGA is most common cyanotic CHD presenting in infancy Etiology: Multifactorial inheritance 90%. Chromosomal 5% Single mutant gene 3%
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Incidence and Etiology Incidence of 1% in general population. VSD is most common CHD TOF is most common cyanotic CHD TGA is most common cyanotic CHD presenting in infancy Etiology: Multifactorial inheritance 90%. Chromosomal 5% Single mutant gene 3% Environmental 2%
Presentations Asymptomatic heart murmer Cyanosis Congestive heart failure Syncope Shock
CHD in Chromosomal Aberrations Incidence Most common lesion Trisomy 21 50% VSD or A-V canal Trisomy 18 90+% VSD Trisomy 13 90% VSD XO Turner 35% CoA
CHD in Single MutantGene Syndromes Marfan’s Aortic aneurysm Noonan’s PS, ASD Williams’ Supravalvular AS Holt-Oram ASD, VSD NF PS, CoA
Teratogens and CHD Frequency Most common Alcohol 25-30% VSD Phenytoin 2-3% PS,AS,CoA,PDA Lithium 10% Ebstein Rubella 35% PPS, PDA Diabetes 3-5% Hypertrophic septum TGA, VSD, CoA (Incidence can be as high as 30-50% in poorly controlled DM) Lupus 50% 3rd degree heart block PKU 25-50% TOF, VSD, ASD
Presentations Asymptomatic (heart murmur) Small VSD, ASD Cyanosis D-TGA, TOF Congestive heart failure Large L-R shunt lesions Syncope AS, PS Shock Coarc, hypoplastic left heart
Birth 2w 8w 4m 1y 3-5y Adolescence VSD ASD|PDACoA ASHLHSTOFTriA/S PATGATATAPVR CHF P. HTN P. HTN CHF Often asymptomatic Shock CHF/HTN Shock CHF CHF/syncope/murmur Shock Cyanosis CHF Shock/Cyanosis Shock/Cyanosis Cyanosis HLHS=Hypoplastic left heart syndrome TriA/S=Tricuspid atresia CHF=Congestive heart failure P.HTN=Pulmonary hypertension FTT=Failure to thrive Cyanosis/CHF Shock/Cyanosis
Cyanotic CHD 1. Truncus Arteriosus 2. Transposition of the Great Arteries 3. Tricuspid Atresia 4. Tetralogy of Fallot 5. Total Anomalous Pulmonary Venous Return
Acyanotic CHD 1. VSD 2. ASD 3. PDA 4. Coarctation Aorta 5. Aortic Stenosis 6. Hypoplastic Left Heart
Cyanotic CHD with Decreased Pulmonary Blood Flow 1. Tetralogy of Fallot 2. Tricuspid Atresia 3. Total Anomalous Pulmonary Venous Return with obstruction
Cyanotic CHD with Increased Pulmonary Blood Flow 1. Transposition of the Great Arteries 2. Truncus Arteriosus 3. Total Anomalous Venous Return without obstruction
Acyanotic CHD with Increased Pulmonary Blood Flow (Volume Load) 1. ASD 2. VSD 3. PDA
Acyanotic CHD with Pulmonary Venous Congestion or Normal Blood Flow (Pressure Load) 1. Coarctation Aorta 2. Aortic Stenosis 3. Hypoplastic Left Heart 4. Pulmonary Stenosis
Circulation before birth
Circulation after birth
Cyanotic CHD with Decreased Pulmonary Blood Flow 1. Tetralogy of Fallot 2. Tricuspid Atresia
Tetralogy of Fallot 1. VSD 2. Pulmonary artery stenosis 3. Overriding aorta 4. Right ventricular hypertrophy
Incidence of total CHD Age at presentation Clinical Auscultation Most common cyanotic CHD Usually by 6 months Cyanosis Cyanotic spells (squatting) Harsh systolic murmur Softer if worsening obstruction Tetralogy of Fallot
Radiology EKG Decreased pulmonary vascularity Boot-shaped heart R-sided aortic arch RAD, RAE, RVH Tetralogy of Fallot
TOF treatment 1. For cyanotic spells: Knee-chest position Morphine sulfate Vasoconstrictors Propranolol 2. Iron for anemia 3. Surgical a. Palliation Blalock-Taussig Waterston shunt Pott’s operation b. Corrective at 1-5 years of age
Tricuspid Atresia Types 1. Normally related great arteries (69%) With small VSD and PS (most common). Intact septum with pulmonary atresia Large VSD without PS 2. D-transposition of great arteries (28%) 3. L-transposition of great arteries (4%)
Incidence: Age at presentation Clinical No obstruction pulmonary blood flow Obstruction pulmonary blood flow Rare Infancy, depending on pulmonary blood flow Congestive heart failure Similar to VSD Cyanosis Variable More intense cyanosis as ductus closes Tricuspid Atresia
Auscultation: Systolic murmur with single S2 Radiology: Variable Decreased pulmonary vasculature Tricuspid Atresia
Treatment Tricuspid Atresia 1. PGE1 to keep ductus open 2. Balloon septostomy if no VSD 3. Surgical a. Palliation systemic-pulmonary shunt (PS) pulmonary artery banding (large VSD) b. Corrective Fontan
Cyanotic CHD with Increased Pulmonary Blood Flow 1. Truncus Arteriosus 2. Transposition of the Great Arteries 3. Total Anomalous Pulmonary Venous Return
Incidence Age at presentation Clinical Auscultation Pulmonary vasculature EKG Rare Neonatal Cyanosis Signs of CHF Wide pule pressure and bounding arterial pulses Harsh systolic murmur Increased BVH or RVH Truncus Arteriosus
Associations Treatment Right sided aortic arch Thymic aplasia - DiGeorge Syndrome Medical Pulmonary artery bending Rastelli’s operation Truncus Arteriosus
Transposition of the Great Vessels D-type D-transposition, complete transposition, most common form -Aorta arises from the right ventricle. -Pulmonary artery arises from the left ventricle. -PDA is the only connection between systemic and pulmonary circulations, although VSD in 40%.
Transposition of the Great Vessels L-type L-transposition, also called corrected transposition -Both ventricles and great vessels are transposed
Incidence Age presentation Clinical Auscultation Radiology EKG 8% of all CHD Male:female 2:1 Newborn, when ductus closes Cyanosis within 1st 48 hrs if no VSD CHF when large left to right shunts Loud single S2, no murmur Egg-on-a-string heart Increased pulmonary vasculature, depending on size shunt RVH D-TGA
Treatment for D-TGA 1. Prostaglandin E 2. Surgical a. Atrial septostomy if no VSD (Rashkind, Blalock - Hanlon etc.) b. Anatomical correction (Jatene’s operation)
TAPVR types 1. Supracardiac emptying in the left vertical vein (most common type 80-90%) which subsequently drains into the SVC 2. Cardiac emptying into the coronary sinus or right atrium 3.Infradiaphragmatic emptying into vertical vein that descends through diaphragm into portal vein and or IVC
Incidence Age at presentation Clinical findings EKG Radiology 2% Newborn Rapid cyanosis in the infra-diaphragmatic type Non-obstructive similar to ASD plus mild cyanosis RVH “Snowman” configuration Diffuse reticular opacities Looks like HMD without air bronchograms! TAPVR
Associations Treatment Polysplenia Asplenia (3/4 patients also TAPVR) Surgical ligation of anomalous vein TAPVR
Acyanotic CHD with Increased Pulmonary Blood Flow (left to right shunt lesions) 1. ASD 2. VSD 3. PDA
Incidence Types Age presentation Clinical Auscultation EKG Treatment 10% CHD Ostium secundum (most common) Sinus venosus defect Ostium primum (AV canal) Varies Mostly asymptomatic Slender body build Widely split and fixed S2! + SEM RAD and RVH No SBE coverage needed! Surgery for large shunts ASD