arrhythmia
/əˈrɪðmiə/
noun
- A condition in which the heartbeat is irregular, too fast, or too slow.
- He was born with a mild arrhythmia that requires regular checkups but doesn't limit his daily activities.
- The doctor diagnosed her with an arrhythmia after the EKG showed an irregular pattern.
- Stress and caffeine can sometimes trigger a harmless arrhythmia in healthy people.