When assessing an older adult client with a history of cardiovascular disease, dyspnea, and peripheral edema, which method is best for the nurse to use to assess the client's pulse rate?

A. Palpate the radial pulses: This may not reveal irregularities or provide an accurate heart rate, especially in clients with conditions like atrial fibrillation. B. Feel the dorsalis pedis and posterior tibialis pulses: These assess peripheral circulation, not the heart rate. C. Use the stethoscope over the carotid artery: While it assesses blood flow in the carotid artery, it is not the best method for determining pulse rate. D. Auscultate the apical pulse: This provides the most accurate assessment of heart rate and rhythm, especially in clients with cardiac disease.