Final answer:
The nurse should verify the Serum potassium level with the lab as Furosemide, Digoxin, and Captopril can affect electrolyte balance.
Step-by-step explanation:
The nurse should verify the Serum potassium level with the lab.
Furosemide, Digoxin, and Captopril are medications commonly used to manage congestive heart failure (CHF). These medications can affect the electrolyte balance in the body, including serum potassium levels. It is important to monitor the serum potassium level because both high and low potassium levels can be dangerous and impact the heart's function.
By verifying the serum potassium level, the nurse can ensure that it is within the appropriate range for the patient's safety and adjust the medications if needed.