What is an arrhythmia?

Arrhythmia is a condition where the heart beats in an irregular way. The rhythm may be too fast, too slow, or uneven. This happens when the electrical signals that guide the heartbeat don’t work properly.

When the rhythm is off, the heart may not pump blood as effectively. This can affect how well oxygen and nutrients reach the body.

Causes and risk factors may include:

• Problems with the heart’s electrical system
• Heart conditions such as coronary artery disease
• High blood pressure or diabetes
• Use of caffeine, alcohol, tobacco, or certain medications
• Stress or strong emotional responses
• Aging

Symptoms

Arrhythmia symptoms can range from mild to serious, depending on how the heart is affected.

Common symptoms include:

• A fluttering or racing feeling in the chest
• Feeling tired or weak
• Dizziness or lightheadedness
• Fainting or near-fainting episodes
• Shortness of breath
• Chest discomfort

How is it diagnosed?

Providers begin with a physical exam and a review of your symptoms. Testing focuses on tracking the heart’s rhythm.

Common tests include an electrocardiogram (ECG), which records electrical activity in the heart. If symptoms come and go, wearable monitors may be used over time to capture irregular rhythms. In some cases, specialized testing is performed to identify where the abnormal signals originate.

How is it treated?

Treatment depends on the type of arrhythmia and its severity. Some people may not need treatment if symptoms are mild.

Early care often includes lifestyle changes, such as limiting caffeine or managing stress. Medications may be used to control heart rate or reduce the risk of blood clots.

If needed, more advanced treatments may be recommended. These can include procedures to reset the heart rhythm, destroy abnormal electrical pathways, or implant devices that help regulate the heartbeat. In rare cases, surgery may be considered.

Many people can manage arrhythmia successfully with the right treatment plan and regular follow-up care.