What are the best treatment options for high blood pressure in Black adults?

Get answers to the most frequently asked questions about hypertension from nephrologist Leslie Thomas, M.D.

Show transcript for video Hypertension FAQs

Hi. I'm Dr. Leslie Thomas, a nephrologist at Mayo Clinic. And I'm here to answer some of the important questions you might have about hypertension.

What is the best way to measure my blood pressure at home?

Measuring your blood pressure at home is a straightforward process. Many people have a slightly higher blood pressure in one arm versus the other. So it's important to measure the blood pressures in the arm with the higher readings. It's best to avoid caffeine, exercise and, if you smoke, smoking for at least 30 minutes. To prepare for the measurement, you should be relaxed with your feet on the floor and legs uncrossed, and your back supported for at least five minutes. Your arms should be supported on a flat surface. After resting for five minutes, at least two readings are taken one minute apart in the morning prior to medications and in the evening before the evening meal. Your blood pressure monitor should be checked for proper calibration every year.

What could be causing my blood pressure to be quite erratic?

This pattern of abrupt changes in blood pressure from normal to quite high is sometimes referred to as labile blood pressure. For those who develop labile blood pressure, heart problems, hormonal problems, neurological problems, or even psychological conditions might be present. Finding and treating the underlying cause of labile blood pressure can significantly improve the condition.

Should I restrict salt to reduce my blood pressure?

It's important to note that some people with high blood pressure already consume a diet significantly restricted in sodium. And those people further restriction of dietary sodium would not necessarily be helpful or even recommended. In many people, dietary sodium intake is though relatively high. Therefore, an effective target to consider for those people is less than 1500 milligrams per day. Many though, will benefit from a target of less than a 1000 milligrams per day. Following dietary sodium restriction, it may take some time, even weeks, for the blood pressure to improve and stabilize at a lower range. So it is critically important to both be consistent with decreased sodium intake and patient when assessing for improvement.

How can I lower my blood pressure without medication?

This is a very common question. A lot of people want to avoid medication if they can, when trying to reduce their blood pressure. A few ways have been shown scientifically to reduce blood pressure. The first, and perhaps most important, is to stay physically active. Losing weight also can be important in a lot of different people. Limiting alcohol, reducing sodium intake, and increasing dietary potassium intake can all help.

What is the best medication to take for hypertension?

There's not one best medication for the treatment of hypertension for everyone. Because an individual's historical and present medical conditions must be considered. Additionally, every person has a unique physiology. Assessing how certain physiological forces may be present to contribute to the hypertension in an individual allows for a rational approach to medication choice. Antihypertensive medications are grouped by class. Each class of medication differs from the other classes by the way it lowers blood pressure. For instance, diuretics, no matter the type, act to reduce the body's total content of salt and water. This leads to reduction in plasma volume within the blood vessels and consequently a lower blood pressure. Calcium channel blockers reduce the relative constriction of blood vessels. This reduced vasoconstriction also promotes a lower blood pressure. Other classes of antihypertensive medication act in their own ways. Considering your health conditions, physiology, and how each medication works, your doctor can advise the safest and most effective medication for you.

Are certain blood pressure medications harmful to my kidneys?

Following the correction of blood pressure or the institution of certain blood pressure medications, it's pretty common to see changes in the markers for kidney function on blood tests. However, small changes in these markers, which reflects small changes in kidney filtration performance shouldn't necessarily be interpreted as absolute evidence of kidney harm. Your doctor can interpret changes in laboratory tests following any change in medication.

How can I be the best partner to my medical team?

Keep an open dialogue with your medical team about your goals and personal preferences. Communication, trust and collaboration are key to long-term success managing your blood pressure. Never hesitate to ask your medical team any questions or concerns you have. Being informed makes all the difference. Thanks for your time and we wish you well.

What are the best treatment options for high blood pressure in Black adults?
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Blood pressure measurement

What are the best treatment options for high blood pressure in Black adults?

Blood pressure measurement

A blood pressure reading measures the pressure in the arteries when the heart beats (top number, called systolic pressure) and between heartbeats (bottom number, called diastolic pressure). To measure blood pressure, an inflatable cuff is usually placed around the arm. A machine or small hand pump is used to inflate the cuff. In this image, a machine records the blood pressure reading. This is called an automated blood pressure measurement.

To diagnose high blood pressure, your health care provider examines you and asks questions about your medical history and any symptoms. Your provider listens to your heart using a device called a stethoscope.

Your blood pressure is checked using a cuff, usually placed around your arm. It's important that the cuff fits. If it's too big or too small, blood pressure readings can vary. The cuff is inflated using a small hand pump or a machine.

The first time your blood pressure is checked, it should be measured in both arms to see if there's a difference. After that, the arm with the higher reading should be used.

Blood pressure is measured in millimeters of mercury (mm Hg). A blood pressure reading has two numbers.

  • Top number, called systolic pressure. The first, or upper, number measures the pressure in the arteries when the heart beats.
  • Bottom number, called diastolic pressure. The second, or lower, number measures the pressure in the arteries between heartbeats.

High blood pressure (hypertension) is diagnosed if the blood pressure reading is equal to or greater than 130/80 mm Hg. A diagnosis of high blood pressure is usually based on the average of two or more readings taken on separate occasions.

Blood pressure is grouped according to how high it is. This is called staging. Staging helps guide treatment.

  • Stage 1 hypertension. The top number is between 130 and 139 mm Hg or the bottom number is between 80 and 89 mm Hg.
  • Stage 2 hypertension. The top number is 140 mm Hg or higher or the bottom number is 90 mm Hg or higher.

Sometimes the bottom blood pressure reading is normal (less than 80 mm Hg) but the top number is high. This is called isolated systolic hypertension. It's a common type of high blood pressure in people older than 65.

Tests

If you are diagnosed with high blood pressure, your provider may recommend tests to check for a cause.

  • Ambulatory monitoring. A longer blood pressure monitoring test may be done to check blood pressure at regular times over six or 24 hours. This is called ambulatory blood pressure monitoring. However, the devices used for the test aren't available in all medical centers. Check with your insurer to see if ambulatory blood pressure monitoring is a covered service.
  • Lab tests. Blood and urine tests are done to check for conditions that can cause or worsen high blood pressure. For example, tests are done to check your cholesterol and blood sugar levels. You may also have lab tests to check your kidney, liver and thyroid function.
  • Electrocardiogram (ECG or EKG). This quick and painless test measures the heart's electrical activity. It can tell how fast or how slow the heart is beating. During an ECG, sensors called electrodes are attached to the chest and sometimes to the arms or legs. Wires connect the sensors to a machine, which prints or displays results.
  • Echocardiogram. This noninvasive exam uses sound waves to create detailed images of the beating heart. It shows how blood moves through the heart and heart valves.

Taking your blood pressure at home

Your health care provider may ask you to regularly check your blood pressure at home. Home monitoring is a good way to keep track of your blood pressure. It helps your care providers know if your medicine is working or if your condition is getting worse.

Home blood pressure monitors are available at local stores and pharmacies.

For the most reliable blood pressure measurement, the American Heart Association recommends using a monitor with a cuff that goes around your upper arm, when available.

Devices that measure your blood pressure at your wrist or finger aren't recommended by the American Heart Association because they can provide less reliable results.

More Information

  • Blood pressure chart
  • Blood pressure test

Treatment

Changing your lifestyle can help control and manage high blood pressure. Your health care provider may recommend that you make lifestyle changes including:

  • Eating a heart-healthy diet with less salt
  • Getting regular physical activity
  • Maintaining a healthy weight or losing weight
  • Limiting alcohol
  • Not smoking
  • Getting 7 to 9 hours of sleep daily

Sometimes lifestyle changes aren't enough to treat high blood pressure. If they don't help, your provider may recommend medicine to lower your blood pressure.

Medications

The type of medicine used to treat hypertension depends on your overall health and how high your blood pressure is. Two or more blood pressure drugs often work better than one. It can take some time to find the medicine or combination of medicines that works best for you.

When taking blood pressure medicine, it's important to know your goal blood pressure level. You should aim for a blood pressure treatment goal of less than 130/80 mm Hg if:

  • You're a healthy adult age 65 or older
  • You're a healthy adult younger than age 65 with a 10% or higher risk of developing cardiovascular disease in the next 10 years
  • You have chronic kidney disease, diabetes or coronary artery disease

The ideal blood pressure goal can vary with age and health conditions, particularly if you're older than age 65.

Medicines used to treat high blood pressure include:

  • Water pills (diuretics). These drugs help remove sodium and water from the body. They are often the first medicines used to treat high blood pressure.

    There are different classes of diuretics, including thiazide, loop and potassium sparing. Which one your provider recommends depends on your blood pressure measurements and other health conditions, such as kidney disease or heart failure. Diuretics commonly used to treat blood pressure include chlorthalidone, hydrochlorothiazide (Microzide) and others.

    A common side effect of diuretics is increased urination. Urinating a lot can reduce potassium levels. A good balance of potassium is necessary to help the heart beat correctly. If you have low potassium (hypokalemia), your provider may recommend a potassium-sparing diuretic that contains triamterene.

  • Angiotensin-converting enzyme (ACE) inhibitors. These drugs help relax blood vessels. They block the formation of a natural chemical that narrows blood vessels. Examples include lisinopril (Prinivil, Zestril), benazepril (Lotensin), captopril and others.
  • Angiotensin II receptor blockers (ARBs). These drugs also relax blood vessels. They block the action, not the formation, of a natural chemical that narrows blood vessels. ARBs include candesartan (Atacand), losartan (Cozaar) and others.
  • Calcium channel blockers. These drugs help relax the muscles of the blood vessels. Some slow your heart rate. They include amlodipine (Norvasc), diltiazem (Cardizem, Tiazac, others) and others. Calcium channel blockers may work better for older people and Black people than do ACE inhibitors alone.

    Don't eat or drink grapefruit products when taking calcium channel blockers. Grapefruit increases blood levels of certain calcium channel blockers, which can be dangerous. Talk to your provider or pharmacist if you're concerned about interactions.

Other medicines sometimes used to treat high blood pressure

If you're having trouble reaching your blood pressure goal with combinations of the above medicines, your provider may prescribe:

  • Alpha blockers. These medicines reduce nerve signals to blood vessels. They help lower the effects of natural chemicals that narrow blood vessels. Alpha blockers include doxazosin (Cardura), prazosin (Minipress) and others.
  • Alpha-beta blockers. Alpha-beta blockers block nerve signals to blood vessels and slow the heartbeat. They reduce the amount of blood that must be pumped through the vessels. Alpha-beta blockers include carvedilol (Coreg) and labetalol (Trandate).
  • Beta blockers. These medicines reduce the workload on the heart and widen the blood vessels. This helps the heart beat slower and with less force. Beta blockers include atenolol (Tenormin), metoprolol (Lopressor, Toprol-XL, Kapspargo sprinkle) and others.

    Beta blockers aren't usually recommended as the only medicine prescribed. They may work best when combined with other blood pressure drugs.

  • Aldosterone antagonists. These drugs may be used to treat resistant hypertension. They block the effect of a natural chemical that can lead to salt and fluid buildup in the body. Examples are spironolactone (Aldactone) and eplerenone (Inspra).
  • Renin inhibitors. Aliskiren (Tekturna) slows the production of renin, an enzyme produced by the kidneys that starts a chain of chemical steps that increases blood pressure.

    Due to a risk of serious complications, including stroke, you shouldn't take aliskiren with ACE inhibitors or ARBs.

  • Vasodilators. These medicines stop the muscles in the artery walls from tightening. This prevents the arteries from narrowing. Examples include hydralazine and minoxidil.
  • Central-acting agents. These medicines prevent the brain from telling the nervous system to increase the heart rate and narrow the blood vessels. Examples include clonidine (Catapres, Kapvay), guanfacine (Intuniv) and methyldopa.

Always take blood pressure medicines as prescribed. Never skip a dose or abruptly stop taking blood pressure medicines. Suddenly stopping certain ones, such as beta blockers, can cause a sharp increase in blood pressure called rebound hypertension.

If you skip doses because of cost, side effects or forgetfulness, talk to your care provider about solutions. Don't change your treatment without your provider's guidance.

Treating resistant hypertension

You may have resistant hypertension if:

  • You take at least three different blood pressure drugs, including a diuretic. But your blood pressure remains stubbornly high.
  • You're taking four different medicines to control high blood pressure. Your care provider should check for a possible second cause of the high blood pressure.

Having resistant hypertension doesn't mean your blood pressure will never get lower. If you and your provider can determine the cause, a more effective treatment plan can be created.

Treating resistant hypertension may involve many steps, including:

  • Changing blood pressure medicines to find the best combination and dosage.
  • Reviewing all your medicines, including those bought without a prescription.
  • Checking blood pressure at home to see if medical appointments cause high blood pressure. This is called white coat hypertension.
  • Eating healthy, managing weight and making other recommended lifestyle changes.

High blood pressure during pregnancy

If you have high blood pressure and are pregnant, discuss with your care providers how to control blood pressure during your pregnancy.

Potential future treatments

Researchers have been studying the use of heat to destroy specific nerves in the kidney that may play a role in resistant hypertension. The method is called renal denervation. Early studies showed some benefit. But more-robust studies found that it doesn't significantly lower blood pressure in people with resistant hypertension. More research is underway to determine what role, if any, this therapy may have in treating hypertension.

More Information

  • Alpha blockers
  • Angiotensin II receptor blockers
  • Angiotensin-converting enzyme (ACE) inhibitors
  • Beta blockers
  • Calcium channel blockers
  • Central-acting agents
  • Choosing blood pressure medications
  • Diuretics
  • Vasodilators
  • Beta blockers: Do they cause weight gain?
  • Beta blockers: How do they affect exercise?
  • Blood pressure medications: Can they raise my triglycerides?
  • Calcium supplements: Do they interfere with blood pressure drugs?
  • Diuretics: A cause of low potassium?
Show more related information

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What is the best treatment for hypertension in African Americans?

What are the hypertension treatment options for African Americans? Experts recommend Black adults start with either a thiazide diuretic — such as chlorthalidone or hydrochlorothiazide — or a calcium channel blocker like amlodipine (Norvasc).

How can black people lower blood pressure?

Two types of medicines seem to work better at lowering blood pressure among African Americans. These are thiazide diuretics and long-acting calcium channel blockers. Treating other chronic health problems, such as type 2 diabetes, is also important.

What is the best strategy to improve blood pressure control in African American hypertension?

7 ways to help your Black patients control high blood pressure.
Encourage patients to take the pledge. ... .
Recognize lifestyle challenges. ... .
Acknowledge barriers to BP control. ... .
Gather race, ethnicity data. ... .
Focus on physical and mental health. ... .
Identify dietary factors. ... .
Partner with barbershops..

What is the best blood pressure for black people?

119 or below is the normal systolic blood pressure. 120-129 is elevated. 130-139 and greater is Stage 1 high blood pressure. 140 and higher is Stage 2 high blood pressure.