veseartériaszkületben

Veseartériaszűkület, also known as renal artery stenosis, is a condition characterized by the narrowing of one or both of the renal arteries. These arteries are crucial blood vessels that supply oxygenated blood from the aorta to the kidneys. When narrowed, the kidneys receive insufficient blood flow, which can trigger several physiological responses.

The primary cause of veseartériaszűkület is atherosclerosis, a gradual buildup of fatty plaques within the artery walls. This is more common in older individuals and those with risk factors for heart disease, such as high blood pressure, high cholesterol, diabetes, and smoking. A less common cause, particularly in younger individuals, is fibromuscular dysplasia, a condition where the artery walls grow abnormally, leading to narrowing.

The consequences of reduced blood flow to the kidneys can include elevated blood pressure, a condition known as renovascular hypertension. The kidneys, sensing reduced perfusion, release hormones that constrict blood vessels elsewhere and cause the body to retain salt and water, further increasing blood pressure. Over time, severe or prolonged veseartériaszűkület can lead to kidney damage and even kidney failure. Symptoms may include difficult-to-control high blood pressure, a new onset of high blood pressure after age 50, or a decline in kidney function. Diagnosis typically involves imaging tests such as Doppler ultrasound, CT angiography, or magnetic resonance angiography. Treatment options range from medication to manage blood pressure and cholesterol to procedures like angioplasty with stenting to open the narrowed artery.