For patients with PKD and hypertension, which treatment approach is commonly used?

For patients with PKD and hypertension, which treatment approach is commonly used?

• A. No antihypertensive therapy
• B. Increase protein intake
• C. Increase fluids and control blood pressure with ACE inhibitors
• D. Avoid all medications

Answer: (C)

Hypertension in polycystic kidney disease often stems from activation of the renin-angiotensin-aldosterone system due to cyst growth and kidney dysfunction, so the main goal is to control blood pressure while protecting kidney function. The best approach is to use an ACE inhibitor (or an ARB) because these drugs block angiotensin II’s effects, leading to dilation of the efferent arterioles, lower intraglomerular pressure, reduction in proteinuria, and overall slowing of kidney damage. This targeted blood pressure control with RAAS blockade is standard in PKD patients with hypertension. Increasing fluids to suppress vasopressin has some theoretical rationale for cyst growth, but it does not replace the need for BP management with ACE inhibitors. Omitting antihypertensive therapy or focusing on increasing protein intake would not address the risk of ongoing kidney injury from high blood pressure.

Hypertension in polycystic kidney disease often stems from activation of the renin-angiotensin-aldosterone system due to cyst growth and kidney dysfunction, so the main goal is to control blood pressure while protecting kidney function. The best approach is to use an ACE inhibitor (or an ARB) because these drugs block angiotensin II’s effects, leading to dilation of the efferent arterioles, lower intraglomerular pressure, reduction in proteinuria, and overall slowing of kidney damage. This targeted blood pressure control with RAAS blockade is standard in PKD patients with hypertension.

Increasing fluids to suppress vasopressin has some theoretical rationale for cyst growth, but it does not replace the need for BP management with ACE inhibitors. Omitting antihypertensive therapy or focusing on increasing protein intake would not address the risk of ongoing kidney injury from high blood pressure.