A nurse is caring for a 6-month-old infant who has a prescription for clear liquids by mouth after a repair of an intussusception. Which of the following fluids should the nurse select for the infant?

Choice A reason: Pyloric stenosis is not a manifestation of inadequate motility of part of the intestine, but rather a hypertrophy of the pyloric muscle, which causes gastric outlet obstruction and delayed gastric emptying. Pyloric stenosis typically presents with projectile vomiting, dehydration, weight loss, and a palpable olive-shaped mass in the abdomen.

Choice B reason: Hirschsprung's disease is a manifestation of inadequate motility of part of the intestine, as it is caused by the absence of ganglion cells in the distal colon, which results in a lack of peristalsis and a functional obstruction. Hirschsprung's disease typically presents with constipation, abdominal distension, failure to thrive, and enterocolitis.

Choice C reason: Encopresis is not a manifestation of inadequate motility of part of the intestine, but rather a condition in which a child over 4 years of age involuntarily passes stool, usually due to chronic constipation and fecal impaction. Encopresis typically presents with soiling of the underwear, abdominal pain, low self-esteem, and behavioral problems.

Choice D reason: Enterocolitis is not a manifestation of inadequate motility of part of the intestine, but rather an inflammation of the mucosa of the small and large intestines, which can be caused by various infections, allergies, or ischemia. Enterocolitis typically presents with diarrhea, fever, abdominal pain, and dehydration.

Choice A reason: Headaches are not a specific finding for rhabdomyosarcoma of the nasopharynx, as they can be caused by many other conditions. Headaches may occur if the tumor compresses the cranial nerves or the brain, but this is not a common manifestation.

Choice B reason: Bleeding is not a specific finding for rhabdomyosarcoma of the nasopharynx, as it can be caused by many other conditions. Bleeding may occur if the tumor erodes the blood vessels or the mucosa, but this is not a common manifestation.

Choice C reason: Tearing is not a specific finding for rhabdomyosarcoma of the nasopharynx, as it can be caused by many other conditions. Tearing may occur if the tumor affects the lacrimal duct or the eye, but this is not a common manifestation.

Choice D reason: Swelling is an expected finding for rhabdomyosarcoma of the nasopharynx, as it indicates the presence of a mass in the nasal cavity or the pharynx. Swelling may cause nasal obstruction, difficulty breathing, or facial asymmetry. Swelling may also be palpable or visible on imaging studies.