A client who is taking furosemide reports experiencing leg cramps, a cough, feeling tired, and palpitations. Which action should the nurse take first?

A. Place on cardiac monitoring: The client’s symptoms—leg cramps, cough, tiredness, and palpitations—suggest possible electrolyte imbalances or cardiovascular issues related to furosemide, a diuretic. Cardiac monitoring is crucial because electrolyte imbalances (e.g., hypokalemia) can lead to serious cardiac arrhythmias. Monitoring the heart's activity allows for early detection and management of potential arrhythmias or other cardiac concerns. B. Monitor intake and output: While monitoring intake and output is important for assessing the effectiveness of furosemide and detecting fluid imbalances, the priority in this situation is to address the immediate risk of potential cardiac disturbances indicated by the client’s symptoms. C. Apply warm compresses to legs: Applying warm compresses might provide temporary relief for leg cramps but does not address the broader issues suggested by the client’s symptoms. The primary concern here is the potential for serious complications related to electrolyte imbalances or cardiovascular effects. D. Raise the head of the bed: Raising the head of the bed may help with the cough and feeling of tiredness, potentially improving the client's comfort. However, this action does not address the risk of cardiac disturbances or electrolyte imbalances that could be causing the palpitations and other symptoms. Prioritizing cardiac monitoring is essential to ensure the client’s safety.