Irregular Heartbeat
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Try one of these related symptoms.
I have heart arrhythmia
Pulse feels irregular
Signs of arrhythmia
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.
- Benign Arrhythmias (Palpitations)
Arrhythmias are issues with the rate or rhythm of your heartbeat, where it might beat too slowly, too fast, or with an irregular pattern. Benign arrhythmias are heartbeat irregularities that do not cause any symptoms. Causes include certain medications, caffeine, nicotine, alcohol, cocaine, inhaled aerosols, diet pills, stress, etc.
- Hypertrophic Cardiomyopathy
Hypertrophic cardiomyopathy is a condition where the heart muscle becomes thick. It is often caused by gene mutations in the heart muscle. The thickened heart muscle can become stiff, reducing the heart's ability to pump blood adequately.
- Long QT Syndrome
- Graves' Disease
- Familial Amyloid Polyneuropathy
- Hyperthyroidism
- Cardiac Amyloidosis
Related Serious Diseases
Sometimes, Irregular heartbeat may be related to these serious diseases:
- Sick Sinus Syndrome, Complete AV Block
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.
- Supraventricular Tachycardia
Doctor's Diagnostic Questions
Your doctor may ask these questions to check for this symptom:
- Have you been experiencing an irregular heartbeat?
- When did you first notice your irregular heartbeat?
- How often do you experience irregular heartbeat?
- How is your irregular heartbeat now?
Reviewed By:
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 (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.
Yoshinori Abe, MD (Internal Medicine)
Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.
Content updated on Feb 6, 2025
Following the Medical Content Editorial Policy
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FAQs
Q.
What are the warning signs that may precede sudden death due to arrhythmia (sudden arrhythmic death syndrome)?
A.
Sudden death due to arrhythmia, often referred to as Sudden Arrhythmic Death Syndrome (SADS), can occur without warning, but there are certain signs and symptoms that may precede such events. Recognizing these warning signs is crucial for timely intervention and potentially preventing a fatal outcome.
References:
Srinivasan NT, Schilling RJ. Sudden Cardiac Death and Arrhythmias. Arrhythm Electrophysiol Rev. 2018 Jun;7(2):111-117. doi: 10.15420/aer.2018:15:2. PMID: 29967683; PMCID: PMC6020177.
Merghani A, Narain R, Sharma S. Sudden cardiac death: detecting the warning signs. Clin Med (Lond). 2013 Dec;13(6):614-7. doi: 10.7861/clinmedicine.13-6-614. PMID: 24298113; PMCID: PMC5873668.
Obeyesekere MN, Leong-Sit P, Massel D, Manlucu J, Modi S, Krahn AD, Skanes AC, Yee R, Gula LJ, Klein GJ. Risk of arrhythmia and sudden death in patients with asymptomatic preexcitation: a meta-analysis. Circulation. 2012 May 15;125(19):2308-15. doi: 10.1161/CIRCULATIONAHA.111.055350. Epub 2012 Apr 24. PMID: 22532593.
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