Understanding Renal Artery Stenosis
Renal artery stenosis occurs when one or both of the arteries supplying blood to the kidneys become narrowed, reducing blood flow. This narrowing is most commonly caused by plaque buildup (atherosclerosis) and can affect how well the kidneys function. Reduced blood flow may also contribute to difficult-to-control high blood pressure and, over time, increase the risk of kidney damage if left untreated.
Symptoms & Warning Signs of Renal Artery Stenosis
Many people with renal artery stenosis do not experience symptoms in the early stages. When symptoms or warning signs are present, they may include high blood pressure that is difficult to control, declining kidney function, swelling caused by fluid retention, or sudden worsening of previously stable hypertension. Because these symptoms can also be associated with other conditions, a thorough vascular evaluation is important for an accurate diagnosis.
Diagnosing Renal Artery Stenosis
Our vascular specialists use advanced, non-invasive imaging to evaluate blood flow to the kidneys and identify narrowing of the renal arteries. Early diagnosis helps determine the cause of uncontrolled hypertension or declining kidney function and allows treatment to begin before additional complications develop.
Renal Artery Duplex Ultrasound
A Renal Artery Duplex Ultrasound is a non-invasive imaging test that evaluates the blood flow to the kidneys through the renal arteries. Using high-frequency sound waves and Doppler technology, it creates detailed images and measures how well blood is flowing. This test helps detect narrowing or blockages in the renal arteries, which can lead to high blood pressure or kidney dysfunction. It is commonly used in patients with unexplained hypertension or declining kidney function. The procedure is safe, painless, and usually takes about 30–60 minutes, providing valuable insights to guide diagnosis and treatment.
Renal Artery Stenosis Treatment & Vascular Care
Treatment depends on the severity of the narrowing, your symptoms, and your overall health. Many patients can successfully manage renal artery stenosis with medications to control blood pressure and reduce cardiovascular risk, along with ongoing monitoring of kidney function. In some cases, minimally invasive vascular procedures may be recommended to restore blood flow to the kidneys. Our vascular specialists develop personalized treatment plans focused on preserving kidney function, improving blood flow, and managing long-term cardiovascular health.
Why Early Evaluation Matters
Without treatment, renal artery stenosis can contribute to worsening high blood pressure, progressive kidney disease, and other cardiovascular complications. Early evaluation allows your care team to identify the cause of your symptoms, begin appropriate treatment, and monitor your condition over time. If you have difficult-to-control hypertension or unexplained changes in kidney function, our vascular specialists can help determine whether renal artery disease may be contributing.
