Ectopic heartbeats are sometimes seen with: Changes in the blood, such as a low potassium level (hypokalemia)Decrease in blood supply to the heart; When the heart is enlarged or structurally abnormal ; Ectopic beats may be caused or made worse by smoking, alcohol use, caffeine, stimulant medicines, and some street drugs. Ectopic heartbeats are rare in children without heart disease that was …
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