TRICUSPID ATRESIA STUDY: Inclusion Criteria: • Diagnosis of tricuspid atresia with normally related great arteries AND • Age < 3 months at time of diagnosis AND • Admitted to a CHSS institution after January 1, 1999, i.e., birthdate after October 1, 1998 PULMONARY CONDUIT STUDY – Closed to Accrual Inclusion Criteria: • Valved Conduit Implant at age <2 years at member institution. Date of first implant AFTER January 1, 2002. (Note: Patients who have 1.5 ventricle repair (eg CCTGA) are included) AND • Survival to hospital discharge after conduit insertion AND • First pulmonary ventricle-pulmonary ventricle-pulmonary artery conduit placement AND • Informed consent from patient’s parent or guardian ANOMALOUS AORTIC ORIGIN OF A CORONARY ARTERY (AAOCA) Inclusion Criteria: • Diagnosis and/or management of AAOCA at a CHSS member institution from January 1, 1998 forward • Male or female age 0-30 years at time of diagnosis • If surgical repair: o Performed from January 1, 1998 to study initiation (January 20, 2009) for retrospective subjects o Performed from January 21, 2009 forward for prospectively identified subjects o Completed operative note • Structurally normal heart or heart with small, hemodynamically insignificant lesion, including: patent ductus arteriosus, atrial septal defect, ventricular septal defect, mild pulmonic valvar stenosis, or bicuspid aortic valve without aortic stenosis. • Parental/guardian permission (informed consent, and authorization as applicable), subject consent and authorization as applicable if > 18 years of age and if appropriate, child assent for the observational/questionnaire portion of the study. ATRIOVENTRICULAR SEPTAL DEFECT Inclusion Criteria: 1. Diagnosis of or referral with complete AVSD at a CHSS member institution within first year of life 2. Admitted to CHSS institution for surgery after January 1, 2012 3. Age < 365 days at admission for surgery 4. Atrioventricular and Ventriculoarterial concordance (Includes Tetralogy of Fallot or Double Outlet Right Ventricle) 5. Informed written consent, as applicable. Patients who meet the eligibility criteria but are known to have passed away before being consented will be enrolled in the study. However, their families will not be contacted for consent, follow-up, or for any other study related purpose.

 

TRICUSPID ATRESIA STUDY: Exclusion Criteria: • Patients with atrioventricular (AV) or ventriculoarterial (VA) discordance OR • First intervention at non-CHSS institution OR • Age > 3 months at time of diagnosis, i.e., birthdate before October 1, 1998. PULMONARY CONDUIT STUDY – Closed to Accrual Exclusion Criteria: • Single ventricle RV-PA Conduit (e.g. Norwood RV-PA conduit) • VSD fenestrated or not closed • Non-valved conduit ANOMALOUS AORTIC ORIGIN OF A CORONARY ARTERY (AAOCA) Exclusion Criteria: • Anomalous coronary from the pulmonary artery, coronary artery atresia, or other coronary artery anomalies (e.g., coronary-cameral fistula, coronary aneurysms, myocardial bridging) • Hemodynamically significant structural heart disease, except as outlined above. ATRIOVENTRICULAR SEPTAL DEFECT Exlcusion Criteria: 1. Partial or Transitional AVSD (Separate AV valve orifices, restrictive VSD or intact ventricular septum) 2. Total or Partial Anomalous Pulmonary Venous Drainage (TAPVC or PAPVC) 3. Aortic atresia 4. Heterotaxy 5. First Intervention at a non-CHSS institution. Patients who meet the eligibility criteria but are known to have passed away before being consented will be enrolled in the study. However, their families will not be contacted for consent, follow-up, or for any other study related purpose.