The client is admitted to the unit following a coronary artery bypass graft. The nurse caring for the client notes a potassium level of \(3.5 \mathrm{mEq} / \mathrm{dL}\). Which action should the nurse take at this time? A. Document the finding in the client's record B. Call the physician at once C. Decrease the IV fluid using the protocol provided D. Administer furosemide (Lasix) as ordered

Potassium is an important electrolyte in the body, and its normal range in the blood is typically between \(3.5 \mathrm{mEq} / \mathrm{dL}\) and \(5.0 \mathrm{mEq} / \mathrm{dL}\). If the potassium level is outside this range, it may potentially lead to complications.

The client has a potassium level of \(3.5 \mathrm{mEq} / \mathrm{dL}\), which falls at the lower end of the normal range. However, it is still within the normal limits, so it is not considered abnormal.

Option A - Document the finding in the client's record: This is a reasonable action, as the potassium level is within the normal range, and it should be documented for future reference. Option B - Call the physician at once: This action is not necessary, as the potassium level is within the normal range, and there is no immediate concern. Option C - Decrease the IV fluid using the protocol provided: There is no indication in the exercise that the IV fluid has any impact on the client's potassium level or that it needs to be adjusted based on the current level. Option D - Administer furosemide (Lasix) as ordered: Furosemide is a diuretic that can cause a decrease in potassium levels. Since the client's potassium level is already at the lower end of the normal range, administering furosemide is not a suitable action in this scenario. The most suitable action in this case is Option A: Document the finding in the client's record.