Treatment-resistant hypertension refers to high blood pressure that stays above goal even after treatment. In other words, it can seem like nothing is working, even when a person is taking medication.
Why It Happens
Primary Aldosteronism
Obstructive Sleep Apnea
Chronic Kidney Disease
Narrowed Kidney Arteries
Other Hormone Disorders
Medications and Supplements
Too Much Sodium, Obesity, or Alcohol
Several different issues can keep blood pressure elevated. These include primary aldosteronism, sleep apnea, chronic kidney disease, narrowed arteries to the kidneys, other hormone disorders, certain medications or supplements, and lifestyle factors such as excess sodium intake, obesity, or alcohol use.
How Doctors Diagnose It
Step 1: Make Sure the Measurements Are Correct
Step 2: Review Medicines
Step 3: Search for an Underlying Cause
Treatment and Management Approaches
What happens next depends on the results of the evaluation and may include treating an underlying condition, changing medications, adjusting daily habits, or, in some cases, a procedure.
Treating the Cause
If the care team finds a condition contributing to high blood pressure, addressing that problem is usually the first step. Without treating the root cause, even a well-designed blood pressure plan may not work as expected.
For sleep apnea, treatment may include a continuous positive airway pressure, or CPAP, device that helps keep the airway open during sleep.
Kidney disease, narrowed kidney arteries, and hormone-related disorders may each require a different treatment plan.
Changing Medications
After reviewing all medicines and supplements, the care team may decide to stop or replace decongestants and other products that can raise blood pressure. If a person regularly uses NSAIDs, alternatives may be discussed.
For blood pressure treatment itself, the team uses test results and response to therapy to decide which medications and doses to use. In some cases, a diuretic may be switched to a longer-acting option such as chlorthalidone.
If blood pressure remains high despite the usual three-drug combination, a medication that blocks aldosterone may be considered. One example is spironolactone, which helps the kidneys release excess sodium and water instead of holding onto them.
Spironolactone can raise potassium levels, so potassium and kidney function are often checked before treatment begins and during follow-up to make sure the medicine remains safe and appropriate.
A newer add-on option is baxdrostat, a once-daily aldosterone synthase inhibitor for adults whose blood pressure remains uncontrolled on other medications.
Supporting Treatment With Daily Habits
Lifestyle changes do not replace medicine for treatment-resistant hypertension, but they remain an important part of care and may even reduce the number of medications needed. The most effective plan is one that fits a person's health needs and daily routine.
General steps to consider include:
Cut back on sodium. Depending on medical advice, a reasonable target may be less than 1,500 to 2,000 mg a day. Current guidelines recommend staying below 2,300 mg daily, with 1,500 mg as the ideal goal. Restaurant meals, fast food, canned soups, deli meats, and processed foods are common sources. Reading nutrition labels can help.
Try the DASH eating plan. DASH stands for Dietary Approaches to Stop Hypertension. It emphasizes vegetables, fruits, whole grains, beans, nuts, and low-fat dairy. Foods such as leafy greens, beets, and berries may also support healthy blood vessel function.
Be careful with potassium. Foods rich in potassium, including cantaloupe, kiwifruit, potatoes, and spinach, can help the body remove extra sodium. However, people with kidney disease or those taking medicines that raise potassium should ask their care team how much is appropriate, since too much potassium can trigger dangerous heart rhythm problems.
Stay active and discuss weight goals. At least 150 minutes of moderate exercise each week, such as brisk walking, is often recommended if health allows. If weight loss would help, the care team can suggest a realistic plan.
Limit alcohol. Alcohol can increase blood pressure, so reducing or avoiding it is important. General guidance from the American Heart Association is no more than two drinks a day for men and one drink a day for women.
Make room for sleep and stress reduction. Helpful strategies include paced breathing, meditation, yoga, and tai chi.
Some supplements, including magnesium, omega-3 fatty acids, and aged garlic extract, may offer modest benefits alongside treatment. Others may raise blood pressure or interfere with blood pressure medicines. Supplements should not be used as a substitute for treatment, and it is best to speak with a care team before starting any new one.
Note: The U.S. Food and Drug Administration does not approve supplements for safety or effectiveness. Talk with a healthcare professional about whether a supplement is appropriate for your health and about any possible drug interactions or safety concerns.
When Renal Denervation May Be Considered
For some people whose blood pressure is still uncontrolled, a procedure called renal denervation may be an option. In this procedure, a specialist threads a thin catheter through a blood vessel to the arteries that supply the kidneys.
The device uses energy to reduce the activity of nearby nerves that can contribute to high blood pressure. Renal denervation is used alongside medication and lifestyle changes, and a hypertension specialist can explain the possible benefits and risks and help determine whether it is appropriate.
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