a river in E Asia, forming most of the boundary between N Manchuria and the SE Russian Federation, flowing into the Sea of Okhotsk. About 2700 miles (4350 km) long.
High blood pressure is dangerous, partly because there are no symptoms, so organ damage can occur slowly without being recognized. Renal hypertension can cause chronic kidney disease. This is a slow decline in kidney function. Until the condition is well advanced, chronic kidney disease also causes no symptoms. Because there are usually no symptoms, a doctor may suspect renal hypertension when someone has uncontrolled high blood pressure despite multiple medications or has unexplained chronic kidney disease.
Causes. Renovascular hypertension is caused by renal artery stenosis, a narrowing of the artery in the kidney. This results in a decrease in blood flow to one or both kidneys.Each kidney is capable of regulating the bodyâs blood pressure to assure that each organ has an adequate supply of oxygenated blood.his pattern increases blood pressure, which may result in renovascular hypertension. High blood pressure is a leading cause of stroke and heart attack. The two most common causes of renovascular hypertension are: 1  Atherosclerosis âFatty plaque builds up in the arteries and blocks blood flow to the kidneys.