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.
Different blood pressure medications have different side effects. Calcium channel blockers are used to lower blood pressure, and the biggest side effect is having some edema or swelling. There are medications that may affect the kidneys. There are medications that slow the heart rate down and may make you a little bit tired or fatigued. However, without medication, the biggest side effect of hypertension is a stroke. Other negative effects of high blood pressure include heart failure, heart attack and kidney failure.