The client with hypertension and renal disease is admitted to the clinic with a blood pressure of 190/100. The physician decides to order a beta blocker and a potassium-sparing diuretic. The nurse should anticipate an order for which diuretic? A. Furosemide (Lasix) B. Hydrochlorothiazide (HTCZ) C. Spironolactone (Aldactone) D. Torsemide (Demadex)

Hypertension is high blood pressure, which can damage the blood vessels, heart, and kidneys over time. Renal disease is a condition that affects the kidneys, compromising their ability to filter waste products from the blood. In this case, the physician decides to order a beta-blocker that can help to lower blood pressure and a potassium-sparing diuretic that helps remove excess fluid without losing too much potassium.

Let's take a look at each option: A. Furosemide (Lasix) - a loop diuretic that works by inhibiting the sodium-potassium-chloride cotransporter in the loop of Henle, causing an increase in the excretion of water and electrolytes, including potassium. B. Hydrochlorothiazide (HTCZ) - a thiazide diuretic that inhibits sodium reabsorption in the distal convoluted tubule, leading to increased excretion of sodium, water, and potassium. C. Spironolactone (Aldactone) - a potassium-sparing diuretic that works by antagonizing the action of aldosterone in the distal tubule and collecting ducts of the nephron, causing increased excretion of sodium and water while sparing potassium. D. Torsemide (Demadex) - a loop diuretic, similar to furosemide, that inhibits the sodium-potassium-chloride cotransporter in the loop of Henle.

From the given options, only Spironolactone (Aldactone) is a potassium-sparing diuretic. The other options, Furosemide (Lasix), Hydrochlorothiazide (HTCZ), and Torsemide (Demadex) can cause increased loss of potassium. Since the physician wants a potassium-sparing diuretic, the correct answer is: C. Spironolactone (Aldactone)