A mother brings in her 2 month old to the Pediatric Clinic for a well visit. The infant is eating well and gaining weight consistently. Mom mentions that the baby is spitting up frequently. As the nurse, which of the following is the best response to this concern from the mother?

Rationale: A. "This is not normal, we should consult GI for a nissen fundoplication": A Nissen fundoplication is a surgical procedure reserved for severe gastroesophageal reflux disease (GERD). It is not an appropriate first step for an otherwise healthy infant. B. "This is not normal, we need to send you to the emergency room": Frequent spitting up without distress, feeding problems, or poor weight gain is not an emergency. This response would unnecessarily alarm the mother. C. "This is physiologically normal because baby's central nervous system is not developed and they don't know how to swallow effectively": While neuromuscular maturity plays a role in infant feeding, spitting up in healthy infants is more often due to anatomical immaturity of the gastrointestinal system, rather than poor swallowing reflexes. D. In healthy, thriving infants, frequent spitting up is usually a benign form of gastroesophageal reflux caused by the immaturity of the lower esophageal sphincter. This muscle strengthens over time, and symptoms typically improve as the infant grows.