Explain cyanotic heart disease breifly, Biology

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Explain Cyanotic Heart Disease breifly?

Presence of cyanosis means deoxygenated blood reaching the systemic circulation bypassing the lungs i.e., right to left shunt. Uniform cyanosis means that right to left shunt is at the level of either atrium or ventricle or ascending aorta. Differential cyanosis means right to left shunt through a patent ductus arteriosus.

2433_cyanotic congenital heart disease chart.png

CCHD with Decreased Pulmonary Blood Flow (↓PBF)
The decreased pulmonary blood flow may be due to pulmonary stenosis (PS) or pulmonary arterial hypertension (PAH).


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