Answer
Tetralogy of Fallot is a developmental syndrome that comprises the following abnormalities:
1. An interventricular septal defect-- there is is an opening in the speptum
2.Emergence of the aorta from both left and right ventricles
3. A narrowed pulmonary valve
4. An enlarged right ventricle
Work Step by Step
These structural defects have negative physiological consequences: there is decreased blood flow to the lungs, and oxygented blood and deoxgenated blood are mixed. This mixture results in a condition called cyanosis in which the blood displays a purplish color due to the high levels of carboxyhemoglobin in the blood. Babies who develop this kind of cyanosis are clinically designated as blue babies. These structural defects have negative physiological consequences: there is decreased blood flow to the lungs, and oxygented blood and deoxgenated blood are mixed. This mixture results in a condition called cyanosis in which the blood displays a purplish color due to the high levels of carboxyhemoglobin in the blood. Babies who develop this kind of cyanosis are clinically designated as blue babies.
