Question

which of the following are the components of tetralogy of fallot?
pulmonary stenosis, over - riding aorta, ventricular septal defect, right ventricular hypertrophy.
tricuspid stenosis, over - riding aorta, atrial septal defect, right ventricular hypertrophy.
aortic stenosis, over - riding pulmonary artery, ventricular septal defect, right ventricular hypertrophy.
pulmonary stenosis, over - riding aorta, atrial septal defect, right ventricular hypertrophy.

Explanation:

Tetralogy of Fallot is a congenital heart defect. It consists of four components. Pulmonary stenosis (narrowing of the pulmonary valve or artery), over - riding aorta (aorta is positioned over the ventricular septal defect), ventricular septal defect (hole between the ventricles), and right ventricular hypertrophy (thickening of the right ventricular wall) are the key features. Tricuspid stenosis, atrial septal defect, and aortic stenosis are not part of this tetralogy.

Answer:

Pulmonary stenosis, over - riding aorta, ventricular septal defect, right ventricular hypertrophy.