Hypertension can cause damage to the blood vessels and filters in the kidney, making removal of waste from the body difficult. Once a person is diagnosed with end-stage renal disease, dialysis -- a blood-cleansing process -- or kidney transplantation are necessary.
Cutting down on salt may help lower your blood pressure. And most Americans need to cut back, because they get more sodium than they should.
The American Heart Association recommends getting less than 2,500 milligrams (mg) of sodium each day, unless you have high blood pressure or if you are at risk (if you already have hypertension, have diabetes or kidney disease or are African American). That's less than a teaspoon from all your meals and snacks.
Start with these tips:
Break the habit of...
Decrease in amount of urine or difficulty urinating
Edema (fluid retention), especially in the lower legs
A need to urinate more often, especially at night
How Is Kidney Disease Diagnosed?
As with high blood pressure, you may not realize that you have kidney disease. Certain laboratory tests can indicate whether your kidneys are eliminating waste products properly. These tests include serum creatinine and blood urea nitrogen (BUN); elevated levels of either can indicate kidney damage. Proteinuria, an excess of protein in the urine, is also a sign of kidney disease.
Who Is At Risk for Kidney Disease Due to High Blood Pressure?
Kidney disease caused by high blood pressure affects every group and race. However, certain groups are at higher risk, including:
For patients who have high blood pressure and kidney disease, the most important treatment is to control your blood pressure through lifestyle changes. ACE inhibitor and angiotensin II receptor blocker (ARB) drugs lower blood pressure and can protect the kidneys from further damage, but treatments needs to be individualized.