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BIRD’S EYE VIEW OF PEDIATRIC CARDIAC SURGERY. Dr Roy Varghese Consultant - Pediatric Cardiac Surgery. Tributes. Alfred Blalock - 1945. C Walton Lillehei - 1955. Classification of Lesions. Shunt Lesions Left Ventricular Outflow Tract Obstructions
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BIRD’S EYE VIEW OF PEDIATRIC CARDIAC SURGERY Dr Roy Varghese Consultant - Pediatric Cardiac Surgery ICVD. Chennai
Tributes Alfred Blalock - 1945 C Walton Lillehei - 1955 ICVD. Chennai
Classification of Lesions • Shunt Lesions • Left Ventricular Outflow Tract Obstructions • Right Ventricular Outflow Tract Obstructions • Single Ventricle Lesions • Other Lesions ICVD. Chennai
Normal Anatomy ICVD. Chennai
Patent Ductus Arteriosus ICVD. Chennai
PDA Physiology Blood flows from the aorta across the duct into the pulmonary arteries resulting in increased pulmonary blood flow ICVD. Chennai
PDA Repaired PDA ligated via left thoracotomy ICVD. Chennai
Atrial Septal Defect ICVD. Chennai
Atrial Septal Defect Physiology Enlarged pulmonary artery with increased pulmonary blood flow Oxygen rich blood flows across ASD from left atrium into the right atrium Enlarged right ventricle ICVD. Chennai
Atrial Septal Defect Repaired Patch sewn over ASD ICVD. Chennai
Ventricular Septal Defect ICVD. Chennai
Ventricular Septal Defect Oxygen rich blood flows across the VSD from the left ventricle to the right ventricle and out the pulmonary artery resulting in increased pulmonary blood flow ICVD. Chennai
VSD Repaired Patch sewn across VSD ICVD. Chennai
AVSD - Anatomy ICVD. Chennai
AVSD - Physiology Balance between the two ventricles ICVD. Chennai
AVSD - Repaired ICVD. Chennai
Truncus Arteriosus - Anatomy ICVD. Chennai
Truncus Arteriosus - Physiology Single truncal valve gets blood from both ventricles Proportion of aortic and pulmonary artery blood flow is dependent on the vascular resistance in the respective vascular beds ICVD. Chennai
Truncus Arteriosus - Repaired Pulmonary arteries Conduit (+/- valve) between right ventricle and main pulmonary artery Patch hood from right ventricle to conduit ICVD. Chennai
Truncus Arteriosus - Repaired ICVD. Chennai
Tetralogy of Fallot - Anatomy 3. Aortic override 2. Subpulmonary stenosis 1. VSD 4. Right ventricular hypertrophy ICVD. Chennai
Tetralogy of Fallot - Physiology Infundibular spasm causes more blood from the right ventricle to be shunted into the aorta leading to increasing desaturation ICVD. Chennai
Trans atrial approach to VSD & RVOT ICVD. Chennai
VSD Closure ICVD. Chennai
Tetralogy of Fallot - Repaired VSD closed with patch Infundibular stenosis resected ICVD. Chennai
Tetralogy of Fallot - Repaired Transannular patch ICVD. Chennai
Transposition of great arteries- Anatomy ICVD. Chennai
TGA - Physiology Two circuits in parallel: the only mixing occurs at the level of the PDA/PFO/VSD ICVD. Chennai
TGA – Arterial Switch Operation ICVD. Chennai
TGA – Arterial Switch Operation ICVD. Chennai
TGA – The ‘French’ Manoeuvre ICVD. Chennai
TGA - Repaired ICVD. Chennai
TGA - Repaired ICVD. Chennai
Single Ventricle Lesions • Tricuspid Atresia • Hypoplastic Left Heart Syndrome • Double inlet left ventricle • Indeterminate morphology ICVD. Chennai
Single Ventricle - Physiology ICVD. Chennai
Single ventricle with increased pulmonary blood flow • Pulmonary artery banding ICVD. Chennai
Hypoplastic left heart syndrome ICVD. Chennai
Stage I Norwood operation ICVD. Chennai
Bi-Directional Glenn ICVD. Chennai
Bi-Directional Glenn ICVD. Chennai
Fontan Operation ICVD. Chennai
Advances in congenital cardiac surgery • Minimally invasive surgery • Hybrid surgical procedures • Pharmacological adjuncts ICVD. Chennai
Minimally invasive procedures Surgical expertise Safety/ Results Cosmetic incisions Patient awareness Peer pressure ICVD. Chennai
Correction of “simple” anomalies • Atrial septal defects • Ventricular septal defects • Partial atrioventricular defects • Patent ductus arteriosus ICVD. Chennai
Anterior Thoracotomy Posterior Upper Mini sternotomy Lower VATS ICVD. Chennai
Anterior thoracotomy Advantages: Ease of approach to RA Submammary incision Less keloid ICVD. Chennai
Anterior thoracotomy Disadvantages: Breast development (pre pubertal) Areolar Hypo/hyperaesthesia ICVD. Chennai
Posterior thoracotomy Advantages: Ease of approach – aorta Breast development No keloid ICVD. Chennai
Posterior thoracotomy Disadvantages: Approach – RA in older pts Operative accidents (?) Air embolism ICVD. Chennai
Mini sternotomy • Advantages: Cosmesis • Disadvantages: Poor access to PDA, LSVC, PAPVC ICVD. Chennai