NREMT Paramedic Exam 2025 – 400 Free Practice Questions to Pass the Exam

Pyloric stenosis is a condition that occurs when the pylorus, the opening from the stomach into the small intestine, becomes narrowed, making it difficult for food to pass through. One of the hallmark symptoms of this condition is forceful vomiting, which typically occurs shortly after feeding. This vomiting is often described as projectile and may contain undigested food.

The mechanism behind this symptom relates to the obstruction caused by the narrowing of the pylorus, leading to increased pressure within the stomach when food is ingested. As the stomach contracts to push the food into the small intestine, the increased pressure results in the forceful expulsion of the contents. This symptom is particularly notable in infants, who commonly present with pyloric stenosis.

The other symptoms mentioned, such as blue-tinged skin, rapid heart rate, and elevated temperature, may indicate different medical conditions but are not specifically associated with pyloric stenosis. Each of these can be relevant in various clinical scenarios but does not directly correlate with the pathophysiology of pyloric stenosis in the same way that forceful vomiting does. Understanding the primary symptom helps in recognizing this condition and differentiating it from other gastrointestinal issues.