An electrocardiogram (EKG) can show if something is wrong with the heart, but it isn’t necessarily the only diagnostic tool for heart failure.

An EKG typically shows whether you’ve had or are having a heart attack by recording the electrical impulses of your heart. It will also check your heartbeat and your heart rhythm.

Any issues with your heart rhythm or heartbeat will reveal that your heart isn’t working as it should. Medical professionals will then request additional tests necessary to rule out or confirm a diagnosis of heart failure.

Other tests to diagnose heart failure are available, including blood tests such as specific markers for heart health, like natriuretic peptides, or a physical examination.

A cardiologist, or heart specialist, can listen to your heart and lungs using a stethoscope, and also assess whether you’re experiencing any swelling in your feet, ankles, or other parts of your body.

They can order or perform other tests such as:

Symptoms of heart failure will carry from person to person. They may develop gradually, over longer periods of time, such as weeks or months, or they may occur more suddenly. Common symptoms of heart failure include:

Some people may also experience unintentional weight loss or weight gain, or even anxiety and depression. It’s very important to reach out to a heart specialist if you’re experiencing symptoms of heart failure. They can help rule out or diagnose the condition.