Heart Failure
What is Heart Failure?
Heart failure happens when your heart cannot pump enough blood to meet your body's needs. This does not mean your heart has stopped working. It means your heart muscle has become weaker or stiffer over time. When your heart cannot pump effectively, blood and fluid can back up into your lungs and other organs.
Heart failure is a chronic condition that affects more than 6 million adults in the United States. It develops gradually in most cases. Your body tries to compensate at first by making your heart beat faster or by enlarging the heart muscle. Eventually, these changes are not enough to keep up with your body's demands.
With proper treatment and lifestyle changes, many people with heart failure manage their condition well. Early detection through blood tests and other monitoring can help you and your doctor catch changes before symptoms become severe. Understanding your heart health markers is an important step in managing this condition.
Symptoms
- Shortness of breath during activity or when lying down
- Fatigue and weakness that limits daily activities
- Swelling in legs, ankles, and feet
- Rapid or irregular heartbeat
- Persistent cough or wheezing with white or pink mucus
- Increased need to urinate at night
- Swelling of the abdomen
- Sudden weight gain from fluid retention
- Lack of appetite and nausea
- Difficulty concentrating or decreased alertness
- Chest pain if heart failure is caused by a heart attack
Some people experience mild symptoms that develop slowly over months or years. Others may have symptoms that appear suddenly. In early stages, you might only notice symptoms during physical activity.
Concerned about Heart Failure? Check your levels.
Screen for 1,200+ health conditions
Causes and risk factors
Heart failure develops when damage or strain weakens your heart muscle over time. The most common cause is coronary artery disease, which reduces blood flow to the heart. High blood pressure forces your heart to work harder than normal, which can weaken it. Heart attacks can damage heart tissue and reduce pumping ability. Heart valve problems, irregular heart rhythms, and diseases of the heart muscle itself can all lead to heart failure.
Risk factors include diabetes, obesity, smoking, and heavy alcohol use. Sleep apnea can strain your heart during sleep. Some medications and certain viral infections can damage the heart. Family history of heart disease increases your risk. Age is also a factor, as heart failure becomes more common after age 65. Managing these risk factors through lifestyle changes can help prevent or slow the progression of heart failure.
How it's diagnosed
Doctors diagnose heart failure through a combination of physical exams, medical history, and testing. Blood tests help assess how well your organs are functioning and can reveal markers that indicate heart stress. BNP, or B Type Natriuretic Peptide, is a hormone released when your heart is working too hard. Elevated BNP levels suggest your heart is under strain. Blood tests for kidney function like BUN, or Urea Nitrogen, are important because heart failure can reduce blood flow to your kidneys. Tests for lactic acid can show if your tissues are getting enough oxygen. Liver enzymes like AST may rise when heart failure affects liver function.
Your doctor will also use imaging tests like echocardiograms to see how well your heart pumps blood. Chest X-rays can show fluid buildup in your lungs. An electrocardiogram records your heart's electrical activity. Stress tests evaluate how your heart performs during exercise. Talk to your doctor about which tests are right for monitoring your heart health. Chat with us about heart failure to learn more about testing options.
Treatment options
- Reduce sodium intake to less than 2,000 mg per day to prevent fluid buildup
- Monitor your weight daily and report sudden gains to your doctor
- Limit fluid intake if recommended by your doctor
- Exercise regularly at a level approved by your doctor
- Quit smoking and limit alcohol consumption
- Manage stress through relaxation techniques
- ACE inhibitors or ARBs to relax blood vessels and lower blood pressure
- Beta blockers to slow heart rate and reduce strain
- Diuretics to remove excess fluid and reduce swelling
- Aldosterone antagonists to help remove fluid and reduce scarring
- Digoxin to strengthen heart contractions
- SGLT2 inhibitors to improve heart function and reduce hospitalizations
- Implanted devices like pacemakers in some cases
- Heart surgery or transplant for severe cases
Frequently asked questions
A heart attack happens when blood flow to part of your heart is suddenly blocked, damaging heart muscle. Heart failure is a chronic condition where your heart gradually loses its ability to pump blood effectively. A heart attack can lead to heart failure if it damages enough heart tissue. Heart failure develops over time from various causes, not just heart attacks.
Heart failure is usually a chronic condition that requires ongoing management rather than a cure. However, with proper treatment and lifestyle changes, heart function can improve significantly. Some people with heart failure caused by treatable conditions like valve problems or certain infections may see substantial improvement. Early detection and treatment give you the best chance of improving your heart function.
Your doctor will determine how often you need blood tests based on your condition severity and treatment plan. Many people with heart failure get blood tests every 3 to 6 months to monitor kidney function and medication effects. If your medications change or symptoms worsen, you may need more frequent testing. Regular monitoring helps catch problems early and adjust treatment as needed.
BNP is a hormone your heart releases when it is working too hard or under stress. Higher BNP levels indicate your heart is struggling to pump blood effectively. Doctors use BNP levels to diagnose heart failure and monitor how well treatment is working. Rising BNP levels may mean your heart failure is getting worse or your treatment needs adjustment.
Your kidneys need good blood flow to filter waste from your blood. When your heart cannot pump effectively, less blood reaches your kidneys. Reduced blood flow means your kidneys work less efficiently and waste products like BUN build up. Monitoring kidney function through blood tests is an important part of managing heart failure.
Yes, most people with heart failure benefit from regular exercise at a level approved by their doctor. Physical activity can strengthen your heart and improve your overall health. Start slowly and gradually increase activity as tolerated. Cardiac rehabilitation programs provide supervised exercise designed specifically for people with heart conditions.
ACE inhibitors and ARBs help relax blood vessels and reduce strain on your heart. Beta blockers slow your heart rate and lower blood pressure. Diuretics remove excess fluid that can build up in your body. Many people with heart failure take a combination of these medications to manage their condition effectively.
Most doctors recommend limiting sodium to less than 2,000 mg per day for people with heart failure. Some people with severe heart failure may need to restrict sodium even more. Excess sodium causes your body to retain fluid, which makes your heart work harder. Reading food labels and avoiding processed foods helps you stay within your sodium limit.
Sudden weight gain of 2 to 3 pounds in a day or 5 pounds in a week suggests fluid buildup. Increased shortness of breath, especially when lying down, is a warning sign. New or worse swelling in your legs, ankles, or abdomen needs attention. Contact your doctor right away if you experience these symptoms or if you feel more tired than usual.
Yes, diet plays a major role in managing heart failure. Limiting sodium prevents fluid retention and reduces strain on your heart. Eating a balanced diet with plenty of fruits, vegetables, and whole grains supports overall health. Maintaining a healthy weight reduces the workload on your heart. Many people find that dietary changes improve their symptoms and quality of life.