Correct Answer: A

Rationale: Handwashing is indeed the most effective way to prevent the spread of hand, foot, and mouth disease in children. Proper hand hygiene helps in removing and killing germs that can cause infections. While isolating sick children and disinfecting toys are important measures to prevent the spread of diseases, they are not as effective as handwashing. Encouraging vaccination, in this case, is not relevant since there is no specific vaccine available for hand, foot, and mouth disease.

Correct Answer: A

Rationale: The 'sunset sign,' characterized by downward-driven eyes, is most commonly associated with hydrocephalus. This condition causes increased intracranial pressure, leading to the eyes appearing to be forced downward. Meningitis (choice B) typically presents with symptoms such as fever, headache, and a stiff neck, but not the 'sunset sign.' Cerebral palsy (choice C) is a group of disorders affecting movement and muscle coordination, not directly related to the 'sunset sign.' Encephalitis (choice D) is inflammation of the brain, which can cause symptoms like fever, headache, and confusion, but not the specific downward eye gaze seen in the 'sunset sign.'

Correct Answer: C

Rationale: Excessive frothy saliva is a hallmark sign of tracheoesophageal fistula. The abnormal connection between the esophagus and trachea causes difficulty in swallowing, leading to an accumulation of saliva in the mouth. This symptom is crucial for early identification and management of tracheoesophageal fistula. Choices A, B, and D are incorrect as they are not specific indicators of tracheoesophageal fistula.

Correct Answer: C

Rationale: The most common complication following surgical correction of esophageal atresia with tracheoesophageal fistula in infants is stricture formation. This complication occurs due to the healing process after surgery, leading to the narrowing of the esophagus. Gastroesophageal reflux (Choice A) can be a concern but is not the most common complication. Respiratory distress (Choice B) may happen but is not the primary complication. Aspiration pneumonia (Choice D) is a risk but is typically not as common as stricture formation in these cases.

Correct Answer: B

Rationale: Continuous enteral feedings help stimulate the small intestine's adaptation in short bowel syndrome, promoting better nutrient absorption and eventually reducing reliance on TPN. This approach is crucial for long-term management and improving the child's prognosis. Choice A is incorrect because weaning off TPN typically occurs gradually over time, not the next day. Choice C is incorrect because TPN can be adjusted to provide necessary nutrients, and enteral feedings are mainly used to stimulate intestinal function. Choice D is incorrect as the addition of enteral feedings does not necessarily indicate imminent discharge; it primarily focuses on enhancing intestinal adaptation and reducing reliance on TPN.