A client with a long-standing diagnosis of angina has been prescribed nitroglycerin and diltiazem. In addition to monitoring the client's heart rate, the nurse should prioritize what assessment?

A. Blood pressure: Both nitroglycerin and diltiazem can lower blood pressure due to their vasodilatory effects. Monitoring blood pressure is essential to ensure that it does not drop too low, which could lead to dizziness, fainting, or other complications. B. Level of consciousness: While monitoring level of consciousness is important in general, the primary concern with nitroglycerin and diltiazem is the potential for hypotension. Therefore, blood pressure is a higher priority. C. Daily weights: Daily weights are important for clients with heart failure, but they are not the most immediate priority with nitroglycerin and diltiazem therapy. Blood pressure and heart rate monitoring are more critical in this case. D. Respiratory status: Respiratory status should always be monitored, but the more immediate concern with these medications is their potential to lower blood pressure and cause hypotension. Therefore, blood pressure should be prioritized in this scenario.