Correct Answer: A

Rationale: In a client with type 1 diabetes presenting with hyperglycemia (blood glucose level of 400 mg/dL) and symptoms of thirst and frequent urination, the priority action for the nurse is to administer insulin as prescribed. Insulin helps lower the blood glucose level and prevents complications like diabetic ketoacidosis. While encouraging hydration is essential, administering insulin is crucial to address the high blood glucose levels. Checking urine for ketones is important in diabetic management but is secondary to administering insulin in this scenario. Reinforcing diet and exercise importance is vital for diabetes management but not the priority in acute hyperglycemia.

Correct Answer: D

Rationale: Acknowledging the child's anger as a coping mechanism helps validate their feelings and can open a dialogue for further support.

Correct Answer: C

Rationale: Administering the vaccine as a nasal spray provides an alternative method of delivery that avoids the use of needles, addressing the child's fear while ensuring immunization. Nasal sprays are effective for certain vaccines and can be a suitable option in this scenario. Choice A is not the best response as it only addresses pain management but does not eliminate the use of needles. Choice B is incorrect as there are alternative delivery methods like nasal sprays. Choice D is incorrect as skipping the vaccine would leave the child unprotected and is not a recommended course of action.

Correct Answer: B

Rationale: The priority action for the nurse when a client with meningitis presents with a severe headache and photophobia is to place the client in a dark, quiet room. This intervention helps reduce stimuli that can exacerbate symptoms such as headache and photophobia. Creating a calm environment can provide relief and promote comfort for the client while also supporting their recovery. Administering pain medication may be necessary but ensuring a suitable environment takes precedence. Notifying the healthcare provider is important but is not the immediate priority. Encouraging rest is beneficial, but creating an appropriate environment to alleviate symptoms is the initial essential step.

Correct Answer: C

Rationale: A serum potassium level of 3.0 mEq/L is significantly low and indicates hypokalemia, which can lead to serious complications such as cardiac arrhythmias. Therefore, it is crucial for the nurse to report this finding promptly to the healthcare provider for immediate intervention. The other findings are not as critical in this situation. Gastric output of 100 mL in the last 8 hours may be expected in a patient with persistent vomiting. The shift intake of IV fluids and ice chips indicates fluid replacement, which is important but not as urgent as correcting electrolyte imbalances. A serum pH of 7.45 is within the normal range and does not indicate an immediate concern.