Correct Answer: B

Rationale: Tachycardia is a common early sign of dehydration in infants, especially when presenting with dry mucous membranes and diarrhea. The increased heart rate is the body's compensatory mechanism to maintain cardiac output in response to dehydration. Bradycardia, increased blood pressure, and normal fontanels are not typically associated with early to moderate dehydration in infants.

Correct Answer: B

Rationale: For 13 kg, the maintenance fluid is 1150 mL (1000 mL for first 10 kg + 3*50 mL for the remaining 3 kg). Replacement fluid is 910 mL (0.07 * 13000 mL). Total fluid is 2060 mL, divided by 24 hours is 86 mL/hr.

Correct Answer: C

Rationale: The nurse should identify the 4-year-old with a fever and upper respiratory tract infection as not eligible to receive routine immunizations. It is contraindicated to administer vaccines in the presence of moderate to severe illness, whether with or without fever, to prevent potential complications or reduced vaccine efficacy.

Correct Answer: C

Rationale: Chopped meat is the most difficult to swallow as it requires thorough chewing and coordination to avoid swallowing hazards, making it more challenging compared to raw vegetables, strained fruit, and mashed vegetables.

Correct Answer: C

Rationale: When a child is prescribed a baclofen pump for cerebral palsy, one of the common side effects to include in parent teaching is hypotonia. Baclofen, a muscle relaxant, can lead to decreased muscle tone, resulting in hypotonia. It is important for parents to be aware of this potential side effect and know how to respond accordingly.