A nurse is caring for a client who has a prescription for a potassium supplement. The nurse should monitor the client for which of the following adverse effects?

Choice A reason: Constipation is not a primary adverse effect of potassium supplements. Gastrointestinal upset may occur, but hyperkalemia is the critical concern, making this incorrect. Choice B reason: Hyperkalemia is a serious adverse effect of potassium supplements, as excess potassium disrupts cardiac and muscle function, risking arrhythmias. Monitoring is essential, making this the correct choice. Choice C reason: Hypoglycemia is unrelated to potassium supplements, which affect electrolyte balance, not glucose. This is an incorrect adverse effect for the nurse to monitor. Choice D reason: Hypotension is not a direct effect of potassium supplements. Hyperkalemia’s cardiac risks are more relevant, making this incorrect for monitoring.