Having an irregular heartbeat, medically known as arrhythmia, means that your heart is not beating in its normal rhythm. It can manifest in various ways, such as feeling like your heart skipped a beat, added an extra beat, is experiencing a "fluttering" sensation, or is beating either too fast (a condition known as tachycardia) or too slow (referred to as bradycardia). However, not all arrhythmias are noticeable; some are "silent" and may not cause any symptoms at all. read more >>

It just means it's out of its normal rhythm. It may feel like your heart skipped a beat, added a beat, is "fluttering," or is beating too fast (which doctors call tachycardia) or too slow (called bradycardia). Or, you might not notice anything, since some arrhythmias are "silent."read more >>