A nurse is preparing to administer vaccines to a 4-month-old infant. Which of the following vaccines should the nurse plan to administer?

A. Abdominal wall defect:

Failure to pass meconium within the first 24 hours after birth can indicate a potential obstruction in the gastrointestinal tract. While an abdominal wall defect could potentially cause gastrointestinal issues, it is not specifically associated with failure to pass meconium.

B. Celiac disease:

Celiac disease is an autoimmune disorder characterized by an abnormal immune response to gluten. While celiac disease can cause gastrointestinal symptoms, such as diarrhea and abdominal pain, it is not typically associated with failure to pass meconium in the newborn period.

C. Intussusception:

Intussusception occurs when one segment of the intestine telescopes into another, causing a bowel obstruction. While intussusception is a cause of bowel obstruction in infants, it typically presents with symptoms such as colicky abdominal pain, vomiting, and the passage of "currant jelly" stool, rather than failure to pass meconium.

D. Hirschsprung disease:

Hirschsprung disease is a congenital condition characterized by the absence of ganglion cells in the distal portion of the colon, leading to functional obstruction. Failure to pass meconium within the first 24 hours after birth is a classic sign of Hirschsprung disease. This condition requires surgical intervention to remove the affected portion of the colon and restore normal bowel function.

A. Increase in appetite: Otitis media, an infection or inflammation of the middle ear, typically causes discomfort and pain in infants. As a result, they may experience a decrease in appetite rather than an increase.

B. Tugging on the affected ear lobe: Tugging or pulling on the affected ear lobe is a common sign of ear pain in infants with otitis media. It occurs because the pain from the middle ear extends to the outer ear canal.

C. Erythema and edema of the affected auricle: Otitis media primarily affects the middle ear, so erythema (redness) and edema (swelling) are not typically observed on the outer ear (auricle). Instead, these symptoms are more commonly seen in external ear infections, such as otitis externa.

D. Bluish-green discharge from the ear canal: Bluish-green discharge from the ear canal is not a typical finding in otitis media. It may suggest a secondary bacterial infection or another underlying condition, but it is not a characteristic feature of otitis media.