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An arrhythmia is a change in the rhythm of your heartbeat. When
the heart beats too fast, it's called tachycardia.
When it beats too slow, it's called bradycardia. An arrhythmia can
also mean that your heart beats irregularly
(skips a beat or has an extra beat). At some time or another, most
people have felt their heart race or skip a beat.
These occasional changes can be brought on by strong emotions or
exercise. They usually are not a cause for alarm.
Arrhythmias that occur more often or cause symptoms may be
more serious and need to be
discussed with your doctor.
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