A nurse is caring for a client who has a prescription for chlorpromazine. Which of the following findings should the nurse identify as an indication that the medication is effective?

- A. Correct. The nurse should initiate continuous cardiac monitoring because a magnesium level of 2.7 mEq/L indicates hypermagnesemia, which can cause cardiac dysrhythmias, hypotension, and bradycardia.

- B. Incorrect. The nurse should not administer potassium chloride to a client who has hypermagnesemia because it can worsen the condition by increasing the intracellular magnesium level and decreasing the serum calcium level.

- C. Incorrect. The nurse should not provide a diet rich in legumes, nuts, and green vegetables to a client who has hypermagnesemia because these foods are high in magnesium and can increase the serum magnesium level.

- D. Incorrect. The nurse should not monitor the client for tetany because tetany is a sign of hypomagnesemia, not hypermagnesemia. Hypomagnesemia can cause neuromuscular excitability, muscle spasms, and positive Chvostek's and Trousseau's signs

Choice A rationale:

Activating the fire alarm system is the second action the nurse should take after rescuing the individuals in the area.

Choice B rationale:

Obtaining and using a fire extinguisher should only be attempted by personnel trained to do so. Using a fire extinguisher incorrectly can escalate the fire or cause harm to individuals in the vicinity. The priority is to evacuate and let trained personnel handle the fire.

Choice C rationale:

Evacuating clients from the area is an essential and immediate step. Evacuation ensures the safety of everyone in the area, preventing potential harm due to smoke inhalation or fire spread.

Choice D rationale:

Closing the doors and windows on the unit can help contain the fire and prevent its spread. However, this action should be taken after activating the fire alarm system and initiating the evacuation process. Closing doors and windows can buy some time and limit the fire's oxygen supply, but it should not delay the evacuation procedure.