Episodes may be brief and last only a couple of seconds without causing harm. The fast heart rate doesn't let the ventricles fill and squeeze to pump enough blood to the body. This irregular heart rhythm starts in the lower heart chambers, called the ventricles. ![]() People who have atrial flutter also often have A-fib at other times. Episodes of atrial flutter may go away by themselves or may need treatment. Atrial flutter is similar to A-fib, but heartbeats are more organized. But some episodes won't end unless treated. ![]() Chaotic, irregular electrical signals start in the upper chambers of the heart, called the atria. This is the most common type of tachycardia. Atrial fibrillation, also called AFib.Common types of tachycardia caused by irregular heart rhythms include: Other types of tachycardia are grouped according to cause and the part of the heart causing the fast heart rate. Sinus tachycardia refers to a usual increase in the heart rate often caused by exercise or stress. There are many different types of tachycardia. Treatment for tachycardia may include specific actions or movements, medicine, cardioversion, or surgery to control a rapid heartbeat. Such problems may include heart failure, stroke or sudden cardiac death. ![]() Some forms of tachycardia can lead to serious health problems if left untreated. But sometimes it's a warning of a medical condition that needs attention. Tachycardia may not cause any symptoms or complications.
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