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.
Despite their relatively small size, our kidneys play a very large part in enabling our bodies to function properly. Their job is to regulate the balance of water and minerals in our blood stream. One of the ways that the kidneys accomplish this task is through controlling our blood pressure. The kidney controls blood pressure by expelling surplus sodium from our bodies. If the kidneys are not functioning properly and not enough sodium is excreted, blood pressure will rise.