Which action should the nurse implement to assess the effectiveness of amlodipine?

A. Measure the client's blood pressure: This is the most appropriate action to assess the effectiveness of amlodipine. Amlodipine is a calcium channel blocker primarily used to manage hypertension and angina. Measuring blood pressure will help determine if the medication is effectively lowering the client's blood pressure as intended. B. Note the client's serum calcium levels: While amlodipine affects calcium channels, its effectiveness is not typically assessed by monitoring serum calcium levels. The primary goal of amlodipine therapy is to manage blood pressure and angina, not to alter serum calcium levels. C. Monitor the client's serum electrolytes: Monitoring serum electrolytes is important for various conditions and medications, but it is not the primary method to evaluate the effectiveness of amlodipine. Amlodipine’s main action and efficacy are assessed through blood pressure control. D. Review the client's intake and output: While intake and output are important for overall fluid balance and kidney function, they do not directly measure the effectiveness of amlodipine. The primary assessment for this medication’s effectiveness is through monitoring blood pressure.