Hypertensive kidney disease, also called hypertensive nephrosclerosis, is kidney damage caused by long-standing high blood pressure. Because both conditions can worsen each other, careful control is essential. Dr. Satarupa Deb treats hypertensive kidney disease at Bombay Hospital, South Mumbai.
What Is Hypertensive Kidney Disease?
The kidneys contain a dense network of small blood vessels. When blood pressure stays high for years, these vessels thicken and narrow, reducing blood flow to the kidney tissue and filters. Over time this may cause scarring and a gradual decline in kidney function.
Damaged kidneys, in turn, find it harder to control salt and fluid balance, which raises blood pressure further. Breaking this cycle is the main goal of treatment. High blood pressure is one of the leading causes of chronic kidney disease in India, second only to diabetes.
Risk Factors
The risk of kidney damage from high blood pressure may be greater with:
- Long duration of uncontrolled or undiagnosed hypertension
- Diabetes, obesity and high cholesterol
- High salt intake and physical inactivity
- Smoking and excess alcohol
- A family history of hypertension or kidney disease
- Older age
Symptoms
Both high blood pressure and early kidney damage are usually silent. Symptoms often appear only when the disease is advanced, and may include:
- Swelling of the legs or face
- Frothy urine or passing urine more often at night
- Tiredness, poor appetite or nausea
- Headaches or blurred vision with very high blood pressure
- Blood pressure that becomes harder to control despite medicines
Diagnosis
Diagnosis is based on a history of high blood pressure together with kidney changes, after other causes of kidney disease have been considered.
Because the symptoms are so easily missed, anyone with long-standing high blood pressure should have a blood creatinine and urine albumin test at least once a year. These simple tests can reveal kidney involvement years before any symptoms appear.
- Repeated clinic and home blood pressure readings, or 24-hour ambulatory monitoring
- Serum creatinine with eGFR and urine albumin-to-creatinine ratio
- Kidney ultrasound to assess size and scarring
- Doppler studies if narrowing of the kidney arteries is suspected
- Eye examination and heart tests such as ECG or echocardiography to check other organ damage
Treatment of Hypertensive Kidney Disease
The cornerstone of treatment is steady, long-term blood pressure control to a target set by your doctor. Medicines such as ACE inhibitors or ARBs are often preferred when protein is present in the urine, and other medicines may be added. SGLT2 inhibitors may be considered in suitable patients with CKD to protect the kidneys.
Lifestyle changes make a real difference: reducing salt (including pickles, papad and packaged snacks), maintaining a healthy weight, regular exercise, limiting alcohol and stopping smoking. Your nephrologist will also monitor potassium, kidney function and heart health over time.
When to See a Nephrologist
See a nephrologist if you have high blood pressure with a raised creatinine, reduced eGFR or protein in the urine, if your blood pressure remains high on three or more medicines, or if hypertension develops at a young age.
Frequently Asked Questions
Can controlling blood pressure stop kidney damage?
Good blood pressure control is the most effective way to slow further kidney damage. Existing scarring usually cannot be reversed, but progression can often be significantly slowed.
Is it safe to take blood pressure medicines for life?
Blood pressure medicines are generally safe for long-term use and are monitored with regular blood tests. The risks of uncontrolled blood pressure to the kidneys, heart and brain are usually far greater.
Should I check my blood pressure at home?
Yes. Home monitoring with a validated automatic machine helps your doctor adjust treatment. Record readings at the same times each day and bring them to your appointments.
How is this different from other kidney diseases?
Other conditions such as glomerular disease can also cause high blood pressure. Your nephrologist will check urine and blood tests to ensure the correct diagnosis, since treatment differs.
Consult Dr. Satarupa Deb
If high blood pressure is affecting your kidneys, book a consultation with Dr. Satarupa Deb at Bombay Hospital, South Mumbai, for a personalised treatment plan.
This page is for general information only and is not a substitute for a medical consultation. Please consult a qualified doctor for diagnosis and treatment.