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Patient education: Heart failure (The Basics)

Patient education: Heart failure (The Basics)

What is heart failure? — Heart failure is a condition in which the heart does not pump well. This causes the heart to lag behind in its job of moving blood throughout the body. As a result, fluid backs up in the body, and the organs in the body do not get as much blood as they need. This can lead to symptoms, such as swelling, trouble breathing, and feeling tired.

If you have heart failure, your heart has not actually "failed" or stopped beating. It just isn't working as well as it should.

What are the symptoms of heart failure? — If your heart does not pump well, you might have no symptoms at first. But as the condition gets worse, it can cause:

Tiredness or weakness, or make you feel lightheaded or dizzy

Trouble breathing, which might lead you to be less active or to need extra pillows at night to sleep

A racing heartbeat, even while resting

Swelling in your feet, ankles, and legs (figure 1) or in your belly

Is there a test for heart failure? — Yes. If your doctor or nurse thinks that you might have heart failure, they will do an exam, and might order some of the following tests:

Electrocardiogram ("ECG") – This test measures the electrical activity in your heart. It can show whether you have an abnormal heartbeat or had a heart attack in the past. These are some of the things that can cause heart failure.

A blood test known as "brain natriuretic peptide" ("BNP") or "N-terminal pro-BNP" ("NT-proBNP") – The BNP or NT-proBNP level is high in people with heart failure.

Chest X-ray – A chest X-ray shows if there is fluid in the lungs. It also shows the general shape of the heart and large blood vessels in the chest.

Echocardiogram – This test uses sound waves to create a picture of the heart as it beats. It shows the size of the heart chambers, how well the heart is pumping, and how well the heart valves are working.

Stress test – During a stress test, you might be asked to run or walk on a treadmill while you have an ECG or other heart tests. Physical activity makes the heart pump harder and increases the heart's need for blood. This test helps doctors see if the heart is getting enough blood when it is under stress. If you cannot walk or run, you might instead get a medicine to stress your heart.

Cardiac catheterization (also called "cardiac cath") – During this test, the doctor puts a thin tube into a blood vessel in your neck, leg, or arm. Then, they move the tube up to your heart. When the tube is in your heart or blood vessels, they take measurements. The doctor might also put a dye that shows up on an X-ray into the tube. This can show if any arteries in your heart are narrowed or blocked. This part of the test is called "coronary angiography."

What can I do on my own to protect my heart? — If you do the following things, you will feel better and reduce the chances that you will need to go to the hospital:

Take your medicines, even if you feel well – The medicines your doctor prescribes can help you feel better and live longer. But they will work only if you take them as your doctor tells you to.

Watch for changes in your symptoms, and follow an action plan – An action plan is a list of instructions on what to do if your symptoms change. To use an action plan, you must watch your symptoms closely and weigh yourself every day (see next bullet). If your symptoms get worse or if you gain weight suddenly, you must take action (figure 2 and figure 3). Keep your action plan somewhere handy, such as on your refrigerator, so that you can always check it to see what you should do.

Call your doctor or nurse if you gain weight suddenly – Weigh yourself every morning after you urinate but before you eat breakfast. Wear roughly the same amount of clothing every time. And write down your weight every day on a calendar. Call your doctor or nurse if your weight goes up by 2 or more pounds (1 kilogram) in 1 day, or 4 or more pounds (2 kilograms) in 1 week. When you have heart failure, sudden weight gain is a sign that your body could be holding on to too much fluid. You might need a change in your medicines.

Eat less salt – Try not to add salt at the table or when you cook. Also, avoid foods that come in boxes and cans, unless their labels say that they are low in sodium. The best choices for food are fresh or fresh frozen foods, and foods you prepare yourself (table 1). Ask your doctor how much salt you should have. Your doctor might also tell you to limit the amount of fluids you drink.

Lose weight, if you are overweight – If you are overweight, your heart has to work extra hard to keep up with your body's needs.

Stop smoking – Smoking worsens heart failure and increases the chance that you will have a heart attack or die.

Avoid alcohol – If you already have heart failure, alcohol is not safe for your heart or good for your health.

Be active – Ask your doctor what activities are safe for you. Your doctor will let you know if activities such as walking or biking on most days of the week can help reduce your symptoms. But do not exercise if your symptoms are bothering you a lot.

Check with your doctor before taking any new medicines or supplements – Some over-the-counter and prescription medicines, "natural" remedies, and supplements are not good for people with heart failure. For example, medicines such as ibuprofen (sample brand names: Advil, Motrin) and naproxen (sample brand name: Aleve) can make heart failure worse.

How is heart failure treated? — There are many treatments for heart failure, but medicines are a key part of controlling the condition.

Take your medicines every day as directed. They can reduce the chances that you will need to go to the hospital, have a heart attack, or die. They can also reduce or get rid of your symptoms. That's why they are so important.

Tell your doctor if you can't afford your medicines. They might have ways to reduce the cost of your medicines.

Tell your doctor if your medicines cause side effects or other problems. They might be able to switch to another medicine or lower your dose so that you do not have that problem.

Other treatments for heart failure include devices to help the heart pump with more force or to beat at the right rhythm, and surgery to improve blood flow to the heart or replace the heart.

More on this topic

Patient education: Heart failure – Discharge instructions (The Basics)
Patient education: Medicines for heart failure with reduced ejection fraction (The Basics)
Patient education: Low-sodium diet (The Basics)
Patient education: Coronary artery disease (The Basics)
Patient education: Chest pain (The Basics)
Patient education: High blood pressure in adults (The Basics)
Patient education: High cholesterol (The Basics)
Patient education: Atrial fibrillation (The Basics)
Patient education: Echocardiogram (The Basics)
Patient education: ECG and stress test (The Basics)
Patient education: Nuclear heart testing (The Basics)
Patient education: What can go wrong after a heart attack? (The Basics)
Patient education: Heart failure and atrial fibrillation (The Basics)
Patient education: Exercise and heart failure (The Basics)
Patient education: Cardiac catheterization (The Basics)
Patient education: When your lungs fill with fluid (The Basics)
Patient education: Heart failure with preserved ejection fraction (The Basics)
Patient education: Heart failure with reduced ejection fraction (The Basics)
Patient education: B-type natriuretic peptide test (The Basics)

Patient education: Heart failure (Beyond the Basics)
Patient education: Heart attack (Beyond the Basics)

This topic retrieved from UpToDate on: Jun 02, 2024.
Disclaimer: This generalized information is a limited summary of diagnosis, treatment, and/or medication information. It is not meant to be comprehensive and should be used as a tool to help the user understand and/or assess potential diagnostic and treatment options. It does NOT include all information about conditions, treatments, medications, side effects, or risks that may apply to a specific patient. It is not intended to be medical advice or a substitute for the medical advice, diagnosis, or treatment of a health care provider based on the health care provider's examination and assessment of a patient's specific and unique circumstances. Patients must speak with a health care provider for complete information about their health, medical questions, and treatment options, including any risks or benefits regarding use of medications. This information does not endorse any treatments or medications as safe, effective, or approved for treating a specific patient. UpToDate, Inc. and its affiliates disclaim any warranty or liability relating to this information or the use thereof. The use of this information is governed by the Terms of Use, available at https://www.wolterskluwer.com/en/know/clinical-effectiveness-terms. 2024© UpToDate, Inc. and its affiliates and/or licensors. All rights reserved.
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