Renal Artery Stenosis is a condition caused by narrowing of one or both arteries supplying blood to the kidneys. Reduced blood flow leads to high blood pressure and impaired kidney function. It commonly develops due to atherosclerosis or fibromuscular dysplasia. Early detection is essential to prevent kidney failure, cardiovascular complications, and worsening hypertension.
The most common cause of Renal Artery Stenosis is atherosclerosis, where plaque builds up inside the arteries. Fibromuscular dysplasia, a non-atherosclerotic condition, also contributes, especially in younger patients. Other causes include arterial injury, inflammation, external compression, or congenital abnormalities. Risk factors include diabetes, smoking, aging, and high cholesterol.
Many patients experience no early symptoms. Common signs include sudden or uncontrolled high blood pressure, declining kidney function, fluid retention, swelling in legs, fatigue, and shortness of breath. Some patients may experience reduced urine output or sudden worsening of hypertension despite medications, indicating compromised renal blood supply.
Diagnosis involves blood pressure evaluation, kidney function tests, and imaging studies. Doppler ultrasound, CT angiography, and MR angiography help visualize narrowed arteries. In selected cases, renal angiography confirms severity. Early diagnosis helps determine whether medical therapy, endovascular intervention, or surgery is required to protect kidney health.
Treatment depends on severity and symptoms. Medical management includes blood pressure control, cholesterol management, and lifestyle changes. Interventional treatments involve angioplasty with or without stenting to restore blood flow. Surgery is reserved for complex cases. Timely treatment prevents kidney failure and reduces cardiovascular risks significantly.
Seek medical attention if blood pressure becomes difficult to control or kidney function worsens unexpectedly.
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Treatment depends on severity. Options include medications to control blood pressure and cholesterol, lifestyle changes, angioplasty with or without stenting to open narrowed arteries, and in rare cases, surgical revascularization. The goal is to restore blood flow and protect kidney function.
Yes. If untreated, reduced blood flow can damage kidney tissue over time, leading to chronic kidney disease or kidney failure. Early detection and proper management significantly reduce the risk of permanent kidney damage and related complications.
Diagnosis includes blood tests to assess kidney function and imaging studies such as Doppler ultrasound, CT angiography, MR angiography, or renal angiography. These tests help evaluate blood flow, detect narrowing, and determine severity to guide treatment planning.
Many patients have no early symptoms. Common signs include difficult-to-control high blood pressure, reduced kidney function, fluid retention, swelling in legs, sudden worsening of hypertension, or unexplained kidney failure. Symptoms often appear late, making routine screening important for high-risk individuals.
Renal Artery Stenosis is most commonly caused by atherosclerosis, where fatty plaques build up in the arteries. Less commonly, it can result from fibromuscular dysplasia, especially in younger individuals. Risk factors include diabetes, smoking, high cholesterol, aging, and long-standing hypertension.
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