The rate and rhythm of the heart is controlled by electrical signals that start from within one of the heart’s upper chambers. These electrical signals cause the heart to contract, or squeeze, in a coordinated manner. This synchronized heartbeat continuously circulates blood through the lungs and out to the rest of the body to deliver vital oxygen. Irregular heart rhythms, or arrhythmias, occur when the heart’s electrical signals are abnormal—making it beat too fast, too slow, or in an uncoordinated manner. That irregular heart rhythm can interfere with the heart’s ability to pump effectively. There are numerous types of arrhythmias. Some resolve on their own, while others need treatment. Some are harmless, while others can be dangerous or even fatal.
Watch these short films to learn more about the different types of arrhythmias, associated symptoms and risk factors, and how you can go about finding a proper diagnosis for your condition.
- Also available in Spanish
- To download a closed-caption copy of the films for off-line use, email [email protected]