Irregular Heartbeat
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Reviewed By:

Osler Jay Justo Guzon, MD

Osler Jay Justo Guzon, MD (Cardiology)

Dr. Guzon graduated from the University of Missouri-Kansas City School of Medicine with a BLA and MD. He then completed his Internal Medicine Residency at St. Louis University before a fellowship in Cardiovascular Diseases at the University of Missouri-Columbia. He has since working as an invasive cardiologist with a particular interest in preventative medicine and cardiometabolic disease. Over the past several years, Dr. Guzon has served on the speaker bureaus of AstraZeneca, Lilly, Boehringer-Ingelheim, and Aralez.

Tatsuya Shiraishi, MD

Tatsuya Shiraishi, MD (Cardiology)

Dr. Shiraishi graduated from the Kyoto University School of Medicine. He worked as a cardiologist at Edogawa Hospital, and after joining Ubie, he became the Director of East Nihonbashi Internal Medicine Clinic.

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Content updated on Jan 4, 2023

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  • Have an irregular heartbeat

  • Irregular heartbeat

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About the Symptom

Irregular pulse indicates that the heart is out of its usual rhythm. It may feel like the heart skipped a beat, added a beat, or is "fluttering."

When to see a doctor

Seek professional care if you experience any of the following symptoms

  • A rapid heart rate prior to fainting with loss of consciousness

  • Peripheral cyanosis

  • Altered mental status (delirium)

  • Difficulty breathing / breathlessness

  • Fainting with loss of consciousness

Possible causes

Generally, Irregular heartbeat can be related to:

  • Atrial fibrillation (AF)

    Atrial fibrillation is a heart condition causing an irregular and often abnormally fast heart rate, which can result in blood clots in the heart. It increases the risk of stroke, heart failure, and other heart-related complications. Common causes include heart valve diseases and heart failure.

  • QT prolongation syndrome

    QT prolongation syndrome is a heart signaling disorder that can cause fast, chaotic heartbeats (arrhythmias). It can be present from birth or develop later in life due to certain medical conditions, specific drugs, or mineral imbalances.

  • Pulmonary arterial hypertension

    Pulmonary arterial hypertension is high blood pressure in the small blood vessels of the lungs. It can be caused by heart disease, connective tissue disease, blood vessel disease, high blood pressure, liver disease, blood clots in the blood vessels to the lungs, and lung diseases. It can affect anyone but is more common in women.

  • Benign arrhythmias such as extrasystoles
  • Familial amyloid polyneuropathy
  • Graves' disease
  • Amyloidosis
  • Fabry disease

Related serious diseases

Sometimes, Irregular heartbeat may be related to these serious diseases:

  • Atrioventricular block . sick sinus syndrome

    These conditions involve issues with the heart's electrical conduction system. Signals may be transmitted too fast, too slow, or not at all to some areas of the heart. Both men and women are affected, and the risk increases with age.

Doctor's Diagnostic Questions

Your doctor may ask these questions to check for this symptom:

  • Is your pulse irregular?

  • Do you have a fever?

  • Do you have chest pain?

  • Are you having difficulty breathing?

  • Are you feeling nauseous or have you been vomiting?

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Find Similar Symptoms

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Reviewed By:

Osler Jay Justo Guzon, MD

Osler Jay Justo Guzon, MD (Cardiology)

Dr. Guzon graduated from the University of Missouri-Kansas City School of Medicine with a BLA and MD. He then completed his Internal Medicine Residency at St. Louis University before a fellowship in Cardiovascular Diseases at the University of Missouri-Columbia. He has since working as an invasive cardiologist with a particular interest in preventative medicine and cardiometabolic disease. Over the past several years, Dr. Guzon has served on the speaker bureaus of AstraZeneca, Lilly, Boehringer-Ingelheim, and Aralez.

Tatsuya Shiraishi, MD

Tatsuya Shiraishi, MD (Cardiology)

Dr. Shiraishi graduated from the Kyoto University School of Medicine. He worked as a cardiologist at Edogawa Hospital, and after joining Ubie, he became the Director of East Nihonbashi Internal Medicine Clinic.

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