5 T's of Congenital Heart Disease

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The 5 T's of Congenital Heart Disease refer to the five cyanotic heart defects that cause early cyanosis (blue baby syndrome) due to right-to-left shunting of blood. They are:

Tetralogy of Fallot (TOF) – A combination of four heart defects leading to reduced oxygenation.

Transposition of the Great Arteries (TGA) – The aorta and pulmonary artery are switched, leading to improper circulation.

Truncus Arteriosus – A single large vessel arises from the heart instead of separate pulmonary and aortic arteries.

Total Anomalous Pulmonary Venous Return (TAPVR) – Pulmonary veins drain into the right atrium instead of the left, causing mixing of oxygenated and deoxygenated blood.

Tricuspid Atresia – Absence of the tricuspid valve, blocking blood flow from the right atrium to the right ventricle.
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Cardiology
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