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What causes an arrhythmia?

Arrhythmias may be caused by many different factors, including:

  • Coronary artery disease.
  • Electrolyte imbalances in your blood (such as sodium or potassium).
  • Changes in your heart muscle.
  • Injury from a heart attack.
  • Healing process after heart surgery.
  • Irregular heart rhythms can also occur in "normal, healthy" hearts.
Return to Arrhythmia

See what others are saying

Comment from: needlestone, 45-54 Female (Patient) Published: November 23

I have been having issues for a couple of years and was diagnosed after 3 weeks on Holter monitor, with PVC (premature ventricular contractions) and PAC (premature atrial contractions) with mitral regurgitation. I have since found that aspartame and sucralose are triggers, alcoholic beverages, caffeine, chocolate and stress all are triggers for my arrhythmia. I also think hormones play a role since they are worse certain times during the month.

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Comment from: RoRo, 75 or over Female (Patient) Published: February 27

I find that stress contributes to my irregular heartbeat, and also white wine. I started experiencing arrhythmia back in September 2014. I went to my doctor. He performed an EKG and it was normal. It continued so I made an appointment with my cardiologist. He performed an EKG and heart ultrasound which were both normal. He then ordered a stress test without thallium and it showed some irregularities. He sent me home with a Holter monitor and that also showed irregular heartbeat. I had another stress test with thallium done today along with some scans to rule out any problems with the blood flow to the heart. He is quite sure it will be fine. I need to stress less. I am always anxious. This started when I went off ERT (estrogen replacement therapy) about a year and a half ago. Hopefully, everything will be okay.

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Comment from: Jellybean, 55-64 Female (Patient) Published: January 15

My arrhythmia started 11 years ago. I have pounding, skipping, racing, chest tightness, and flutters. My blood pressure goes up every time I have an episode. It really scares me! I have had 3 stress echoes, multiple EKGs, and a heart monitor. The doctor concluded it was PVCs (premature ventricular contractions) and PACs (premature atrial contractions) and said there was really nothing they could do about it and that it was not dangerous. The episodes, often with no trigger, totally drain my energy! I wish it would just go away!

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