A nurse is caring for a 6-week-old infant who has pyloric stenosis. Which of the following clinical manifestations should the nurse expect?

The correct answer is Choice C.Choice A rationaleDistended neck veins are not a typical manifestation of pyloric stenosis. This condition primarily affects the gastrointestinal system, leading to symptoms related to feeding and digestion rather than cardiovascular symptoms like distended neck veins.Choice B rationaleRed currant jelly stools are associated with intussusception, not pyloric stenosis. Intussusception involves the telescoping of one part of the intestine into another, leading to obstruction and the characteristic stool appearance.Choice C rationaleProjectile vomiting is a hallmark symptom of pyloric stenosis. This occurs due to the obstruction at the pylorus, which prevents food from passing into the small intestine, leading to forceful expulsion of stomach contents.Choice D rationaleA ridged abdomen is not a typical symptom of pyloric stenosis. While the abdomen may be distended due to the obstruction, the primary symptom is projectile vomiting.