A 2-month-old infant is brought in for frequent spit-ups aft…

A 2-month-old infant is brought in for frequent spit-ups after feeding. The spit up is non-bloody and non-bilious. The baby is otherwise healthy, gaining weight appropriately, has no signs of respiratory distress or irritability, and has appropriate wet diapers with yellow/seedy bowel movements. What is the most appropriate next step in management?

A 9-month-old infant is brought to the clinic for a routine…

A 9-month-old infant is brought to the clinic for a routine check-up. The child was born full-term and has had no major illnesses. Growth chart review reveals a consistent drop from the 50th percentile at birth to below the 5th percentile for weight over the past few months, while length and head circumference remain in the 25th percentile. The mother reports the baby eats small amounts, is frequently irritable, and has 3–4 loose stools per day. Which of the following is the most appropriate next step in the evaluation of this child with suspected Failure to Thrive?