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Symptoms

By Mayo Clinic staff

When your heart's rate is too rapid, it may not effectively pump blood to the rest of your body, depriving your organs and tissues of oxygen. This can cause these tachycardia symptoms:

  • Dizziness
  • Shortness of breath
  • Lightheadedness
  • Rapid pulse rate
  • Heart palpitations — a racing, uncomfortable or irregular heartbeat or a sensation of "flopping" in the chest
  • Chest pain
  • Fainting (syncope)

Some people with tachycardia have no symptoms, and the condition is only discovered during a physical examination or with a heart-monitoring test called an electrocardiogram.

When to see a doctor
A number of conditions can cause a rapid heart rate and tachycardia symptoms. It's important to get a prompt, accurate diagnosis and appropriate care. See your doctor if you or your child experiences any tachycardia symptoms.

If you faint, have difficulty breathing or have chest pain lasting more than a few minutes, get emergency care or call 911 or your local emergency number. Seek emergency care for anyone experiencing these symptoms.

Causes Definition

  • See Also

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  • Heart arrhythmias
References
  1. Mitchell LB. Arrhythmias and conduction disorders: Introduction. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec07/ch075/ch075a.html. Accessed April 19, 2009.
  2. Olgin JE, et al. Specific arrhythmias: Diagnosis and treatment. In: Libby P, et al., eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. Philadelphia, Pa.: Saunders Elsevier; 2007. http://www.mdconsult.com/book/player/book.do?method=display&type=aboutPage&decorator=header&eid=4-u1.0-B978-1-4160-4106-1..X5001-8--TOP&isbn=978-1-4160-4106-1&uniq=134565520#lpState=open&lpTab=contentsTab&content=4-u1.0-B978-1-4160-4106-1..50038-8%3Bfrom%3Dtoc%3Btype%3DbookPage%3Bisbn%3D978-1-4160-4106-1. Accessed April 19, 2009.
  3. Ventricular tachycardia. American Heart Association. http://americanheart.org/print_presenter.jhtml?identifier=3062877. Accessed April 22, 2009.
  4. Atrial or supraventricular tachycardia. American Heart Association. http://www.americanheart.org/presenter.jhtml?identifier=3062868. Accessed April 18, 2009.
  5. Mitchell LB. Atrial fibrillation (AF). The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec07/ch075/ch075e.html. Accessed April 20, 2009.
  6. Mitchell LB. Ventricular tachycardia (VT). The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec07/ch075/ch075k.html. Accessed April 20, 2009.
  7. Mitchell LB. Reentrant supraventricular tachycardias (SVT, PSVT). The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec07/ch075/ch075g.html. Accessed April 20, 2009.
  8. Mitchell LB. Ventricular fibrillation. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec07/ch075/ch075m.html. Accessed April 20, 2009.
  9. Hebbar AK, et al. Management of common arrhythmias: Part I. Supraventricular arrhythmias. American Family Physician. 2002;65:2479.
  10. Hebbar AK, et al. Management of common arrhythmias: Part II. Ventricular arrhythmias and arrhythmias in special populations. American Family Physician. 2002;65:2491.
  11. Mitchell LB. Atrial flutter. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec07/ch075/ch075f.html. Accessed April 20, 2009.
  12. What are Holter, event and transtelephonic monitors? American Heart Association. http://www.americanheart.org/presenter.jhtml?identifier=3005149. Accessed Jan. 15, 2009.
  13. Calkins H. Supraventricular tachycardia: AV nodal reentry and Wolff-Parkinson-White syndrome. In: Fuster V, et al., eds. Hurst's The Heart. 12th ed. New York, N.Y.: McGraw-Hill; 2008. http://www.accessmedicine.com/content.aspx?aID=3050545. Accessed April 19, 2009.
  14. Prystowsky EN, et al. Approach to the patient with cardiac arrhythmias: Introduction. In: Fuster V, et al., eds. Hurst's The Heart. 12th ed. New York, N.Y.: McGraw-Hill; 2008. http://www.accessmedicine.com/content.aspx?aID=3048673. Accessed April 20, 2009.
  15. Delacretaz E. Supraventricular tachycardia. New England Journal of Medicine. 2006;354:1039.
  16. Prystowsky EN, et al. Atrial fibrillation, atrial flutter, and atrial tachycardia: Introduction. In: Fuster V, et al., eds. Hurst's The Heart. 12th ed. New York, N.Y.: McGraw-Hill; 2008. http://www.accessmedicine.com/content.aspx?aID=3048772. Accessed April 20, 2009.
  17. Grogan M (expert opinion). Mayo Clinic, Rochester, Minn. April 29, 2009.

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