Cyanosis surgery

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Recommendation for surgery in cyanotic heart disease

The table shows indications for surgery in cyanotic congenital heart disease according to 2018 AHA/ACC Guideline:

Abbreviations: TGA: Transposition of great arteries; PDA: Patent ductus arteriosus  ; ASD: Atrial septal defect; VSD: Ventricular septal defect; TAPVC: Total anomalous pulmonary venous connection; TOF: Tetralogy of fallot; CCTGA: Congenitally corrected transposition of the great arteries;

Recommendation for surgery in cyanotic congenital heart disease

Indications for repair of a scimitar vein in Anomalous pulmonary venous connection (TAPVC) (Class I, Level of Evidence B ):

❑ Decreased functional capacity ❑ Right ventricle enlagment ❑ Net left to right shunt or QP/QS > 1.5/1 ❑ Pulmonary artery systolic pressure less than 50% systemic pressure ❑ Pulmonary vascular resistance less than 1/3 of systemic resistance ❑ Repair at the time of closure of a sinus venous defect or ASD Definition: Abnormal connection between pulmonary veins and systemic veins leading to right heart volume overload such as ASD

Indications for surgery in Anomalous Pulmonary Venous Connections (TAPVC)(Class 2a, Level of Evidence B) :

❑ Asymptomatic adults with right ventricle volume overload ❑ Large left to right shunt( QP/QS > 1.5/1 ❑Pulmonary artery pressure <50% systemic pressure and pulmonary artery resistance <1/3 systemic resistance ❑ Evidence of Right ventricle volume overload and QP/QS>1.5/1

Indications for surgery repair or reoperation in Ebstein anomaly : (Class I, Level of Evidence B)

❑ Significant tricuspid regurgitation in the presence of the following: ❑ Heart failure symptoms ❑ Decreased functional capacity ❑ Progressive right ventricular dysfunction by echocardiography or cardiac MRI Definition: Malformation of tricuspid valve and right ventricle , atrialization of right ventricle, huge right atrium, accompanied by ASD, VSD, PS

Indications for surgery repair or reoperation in Ebstein anomaly:(Class 2a, Level of Evidence B)

❑ Significant tricuspid regurgitation in the presence of the following: ❑ Progressive right ventricle enlargement ❑ Systemic desaturation due to right to left shunt via ASD, VSD ❑ Paradoxical emboli through ASD, VSD ❑ Atrial tachycardia

Indication for Glenn anastomousis at the time of repair in Ebstein anomaly : (Class 2b, Level of Evidence B)

❑ Severe right ventricle dilation ❑ Severe right ventricular systolic dysfunctionbr ❑ Normal left ventricle function ❑ Normal left atrium or left ventricle end diastolic pressure Glenn anastomosis: Bidirectional superior cavopulmonary anastomosis which is the connection between superior vena cava and pulmonary artery with bypassing right artium and right ventricle

Indication for pulmonary valve replacement ( surgical or percutaneous in Tetralogy of fallot (Class I, Level of Evidence B):

❑ Symptomatic Moderate to severe pulmonary regurgitation after repaired TOF in which symptoms can not be explained otherwise. Definition: The combination of Right ventricle hypertrophy, VSD, PS, Overridding aorta

Indication for Pulmonary valve replacement ( surgical or percutaneous in Tetralogy of fallot : (Class 2a, Level of Evidence B)

❑ Asymptomatic moderate to severe pulmonary regurgitation after repaired TOF Pulmonary stenosis valvotomy: Surgical or balloon valvotomy in case of severe PS during infancy or childhood is recommended. Both of interventions can result pulmonary regurgitation and right ventricle dilation in the future and the need for pulmonary valve replacement.

Indication for Tricuspid valve replacement in CCTGA : (Class I, Level of Evidence B)

❑ Symptomatic severe tricuspid regurgitaion accompanied by preserved or mildly systolic dysfunction of systemic ventricle

Indication for Tricuspid valve replacement in CCTGA : (Class 2a, Level of Evidence C)

❑ Asymptomatic severe tricuspid regurgitation accompanied by mildly dilated systemic ventricle

Indication for conduit intervention/replacement in CCTGA : (Class 2b, Level of Evidence B)

❑ Symptomatic subpulmonary left ventricle to pulmonary artery conduit dysfunction