An arrhythmia is a problem with the rate or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm.
- A heartbeat that is too fast is called tachycardia.
- A heartbeat that is too slow is called bradycardia.
Most arrhythmias are harmless, but some can be serious or even life threatening. During an arrhythmia, the heart may not be able to pump enough blood to the body. Lack of blood flow can damage the brain, heart, and other organs.
Sign and Symptoms
Many arrhythmias cause no signs or symptoms. When signs or symptoms are present, the most common ones are:
- Palpitations (feelings that your heart is skipping a beat, fluttering, or beating too hard or fast)
- A slow heartbeat
- An irregular heartbeat
- Feeling pauses between heartbeats
More serious signs and symptoms include:
- Anxiety
- Weakness, dizziness, and light-headedness
- Fainting or nearly fainting
- Sweating
- Shortness of breath
- Chest pain
The Outlook
There are many types of arrhythmia. Most arrhythmias are harmless, but some are not. The outlook for a person who has an arrhythmia depends on the type and severity of the arrhythmia.
Even serious arrhythmias often can be successfully treated. Most people who have arrhythmias are able to live normal, healthy lives.
Learn how to take your pulse. Discuss with your doctor what pulse rate is normal for you. Keep a record of changes in your pulse rate and share this information with your doctor.
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