Question

The patient is receiving hydrochlorothiazide (HydroDIURIL) as well as digoxin (Lanoxin). Which lab result would the nurse recognize as most significant?

1. ALT level of 35 units/L
2. Sodium level of 140 mEq/L
3. Potassium level of 2.9 mEq/L
4. BUN level of 20 mg/dl

Answer 1

The most significant lab result for a patient on hydrochlorothiazide (HydroDIURIL) and digoxin (Lanoxin) is a Potassium level of 2.9 mEq/L due to the risk of digoxin toxicity exacerbated by hypokalemia.

Step-by-step explanation:

The lab result that would be most significant for a patient receiving hydrochlorothiazide (HydroDIURIL) and digoxin (Lanoxin) is a Potassium level of 2.9 mEq/L. Hydrochlorothiazide is a thiazide diuretic which can lead to the depletion of electrolytes, including potassium. Low potassium levels, also known as hypokalemia, can significantly increase the risk of digoxin toxicity because digoxin affects the sodium-potassium ATPase pump, which is highly sensitive to potassium concentrations. Therefore, monitoring potassium levels is critical in patients taking both of these medications to avoid potentially serious side effects.