A nurse working at a clinic speaks on the telephone with a parent of a 2-month-old infant. The parent tells the nurse that the infant has projectile vomiting followed by hunger after meals.

Which of the following responses by the nurse is appropriate?

Choice A rationale
Bluish-green discharge from the ear canal is not a typical finding in otitis media. This could suggest a different condition, such as an external ear infection or a ruptured eardrum.
Choice B rationale
Erythema and edema of the affected auricle (outer part of the ear) are not typical findings in otitis media. These symptoms are more commonly associated with conditions affecting the external ear, such as otitis externa.
Choice C rationale
An increase in appetite is not typically associated with otitis media. In fact, children with otitis media may have a decreased appetite due to discomfort or pain while swallowing.
Choice D rationale
Tugging on the affected ear lobe is a common sign of otitis media in infants and young children. This is often due to the pain and discomfort caused by the infection.

Choice A rationale
The symptoms described by the parent - projectile vomiting followed by hunger - could indicate a serious condition such as pyloric stenosis, which is a narrowing of the opening from the stomach to the small intestine. This condition can lead to severe dehydration and requires immediate medical attention.
Choice B rationale
While burping can help to relieve gas and minor stomach discomfort, it would not address the underlying issue causing the projectile vomiting. This advice might be appropriate for a baby with simple colic or gas, but not for the symptoms described.
Choice C rationale
While oral rehydrating solutions can help to replace lost fluids and electrolytes, they do not address the underlying cause of the projectile vomiting. Furthermore, if the baby is vomiting frequently, they may not be able to keep down the solution.
Choice D rationale
Switching formulas can sometimes help babies who have allergies or intolerances to certain ingredients in their current formula. However, the symptoms described are not typical of a formula intolerance or allergy. Moreover, switching formulas without seeking medical advice can potentially lead to other complications.