A nurse is caring for a client who has diabetes insipidus. Which of the following medications should the nurse plan to administer?

The client has hypokalemia, which is a low level of potassium in the blood. Hypokalemia can cause cardiac arrhythmias, which can be life-threatening. The nurse should initiate cardiac monitoring first to assess the client's heart rhythm and rate, and intervene if any abnormalities are detected. Administering an IV potassium drip is an appropriate intervention for hypokalemia, but it is not the first priority. Listening to the client's bowel sounds and checking the client's hand grasps are also relevant assessments for hypokalemia, as it can cause decreased bowel motility and muscle weakness, but they are not as urgent as cardiac monitoring.

The correct answer is Choice B.

Choice A rationale: This choice suggests that the provider will prescribe a different medication regimen. However, this is not necessarily the case. Rifampin is a first-line medication for tuberculosis and its side effects, including the discoloration of body fluids, are well-known and expected. Therefore, it is unlikely that the provider would change the medication regimen solely based on this side effect.

Choice B rationale: This is the correct answer. Rifampin, an antibiotic used to treat tuberculosis, can cause a harmless red-orange discoloration of body fluids, including urine, sweat, tears, and saliva. This is an expected side effect of the medication and does not indicate any harm or toxicity. It is important for the nurse to reassure the client that this is a normal occurrence and does not require any changes to the medication regimen.

Choice C rationale: This choice suggests that the red-orange discoloration of the client’s saliva may indicate possible medication toxicity. However, this is not accurate. While rifampin can have serious side effects, including liver damage and severe gastrointestinal upset, the discoloration of body fluids is not a sign of toxicity. It is a harmless side effect of the medication.

Choice D rationale: This choice suggests that the client will need to increase her fluid intake to resolve the problem. However, increasing fluid intake will not change the discoloration caused by rifampin. The discoloration is a result of the medication itself and is not influenced by the client’s hydration status.