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This component of tetralogy of fallot is known as right ventricular hypertrophy. It is caused by the fact that the right ventricle, which transports oxygenated blood to the atrium, is working harder to attempt to get more of that blood to the rest of the body. Since the heart is a muscle, it will get thicker as it works harder.

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Why do babies with tetrology of fallot have blood with more lactic acid than a normal baby?

Babies with tetrology of fallot have poor oxygen-saturated blood due to pulmonary stenosis and right ventricular outflow tract obstruction. In blood with normal oxygen levels carbohydrates break down into water and carbon dioxide but in blood with low oxygen levels carbohydrates break down for energy and make lactic acid.


How does the tetrology of fallot affect the heart?

In normal conditions, blood is pumped to the body by the left side of the heart while the right side pumps it to the lungs. Because of the tetralogy of fallot, the hole between the right and left pumping chambers allows the blood to travel across the right and left ventricles but also out into the body artery.


Why do babies with tetralogy of fallot have a faster breathing rate than normal?

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