What is the racial and gender predisposition for pyloric stenosis?

Pyloric stenosis is a condition that causes obstruction at the outlet of the stomach due to hypertrophy of the pylorus, leading to projectile vomiting and dehydration in infants. The condition has a well-documented racial and gender predisposition.

Research indicates that pyloric stenosis predominantly affects males more than females, with a ratio of about 3:1 to 6:1, making it significantly more common in boys. Additionally, the condition has a higher incidence in Caucasian populations compared to other racial groups. While it can occur in any racial or ethnic background, the pronounced predisposition in Caucasian infants, particularly male infants, is a key characteristic.

This information aligns with the choice that states males and Caucasians are the demographic most commonly affected by pyloric stenosis, underpinning the correct answer. Understanding these demographic patterns is important for healthcare providers in recognizing potential cases promptly in the appropriate patient population.