Final answer:
Tetralogy of Fallot is the most common association with congenital pulmonary stenosis. It is a congenital condition characterized by an opening in the interventricular septum and other heart defects. Symptoms include a heart murmur, low blood oxygen saturation, and difficulty in breathing.
Step-by-step explanation:
The most common association with congenital pulmonary stenosis is Tetralogy of Fallot. This is a congenital condition that occurs when there is an opening in the interventricular septum caused by blockage of the pulmonary trunk, normally at the pulmonary semilunar valve. Symptoms of Tetralogy of Fallot include a distinct heart murmur, low blood oxygen percent saturation, difficulty in breathing, and broadening (clubbing) of the fingers and toes.