Correct Answer: A

Rationale: Nuchal rigidity is a classic sign of bacterial meningitis and indicates inflammation of the meninges. It is characterized by neck stiffness and pain upon neck flexion. Flaccid paralysis (Choice B) is not typically associated with bacterial meningitis but rather conditions like Guillain-Barre syndrome. Bradycardia (Choice C) and hypothermia (Choice D) are not commonly seen in bacterial meningitis; instead, patients may present with fever, tachycardia, and signs of systemic inflammation.

Correct Answer: C

Rationale: The correct action for the nurse to take is to check the client's creatinine level before administering vancomycin. Vancomycin is known to be nephrotoxic, so assessing the client's renal function before administering the medication is crucial to prevent further kidney damage. Administering the medication over 15 minutes (Choice A) is not the priority in this scenario as renal function assessment takes precedence. Monitoring urine output (Choice B) is important for assessing renal function but checking creatinine level directly provides more accurate information. Assessing for allergies to antibiotics (Choice D) is also important but not as essential as checking the creatinine level due to the nephrotoxic nature of vancomycin.

Correct Answer: C

Rationale: The correct answer is to instruct the client to take one nitroglycerin sublingual tablet every 5 minutes until the pain is relieved, up to three doses. This dosing regimen is essential for managing angina attacks effectively. Choice A is incorrect because nitroglycerin sublingual tablets should be placed under the tongue for rapid absorption, not taken with food. Choice B is incorrect because nitroglycerin tablets should be stored in their original container at room temperature, away from moisture and heat. Choice D is incorrect because nitroglycerin typically does not cause drowsiness as a side effect.

Correct Answer: B

Rationale: In cases of benzodiazepine overdose, such as diazepam ingestion, flumazenil is the antidote. Therefore, the priority action for the nurse is to administer flumazenil to the client. Monitoring the IV site for thrombophlebitis (Choice A) is important but not the immediate priority. Evaluating the client for further suicidal behavior (Choice C) is important but not the next immediate action. Initiating seizure precautions (Choice D) is not the priority as the client's airway has already been secured.

Correct Answer: D

Rationale: Administering calcium gluconate IV is the correct action when a client displays toxicity from magnesium sulfate. Calcium gluconate is used as the antidote for magnesium sulfate toxicity as it counteracts the effects. Positioning the client supine (Choice A) is not the immediate action needed. Administering dextrose 5% in water (Choice B) is not indicated for magnesium sulfate toxicity. Administering methylergonovine IM (Choice C) is used in postpartum hemorrhage, not for magnesium sulfate toxicity.