A normal heart rate for a healthy adult is between 60 and
100 beats per minute. Heart rates of more than 100 beats per minute
(tachycardia) can be caused by:
Exercise or stress. This fast heart rate usually
returns to normal range (60 to 100 beats per minute) with rest and
Illnesses that cause fever. When the cause of the fever
goes away, the heart rate usually returns to normal.
Dehydration. When the dehydration is treated, the
heart rate usually returns to normal.
Medicine side effects,
especially asthma medicines.
Heavy smoking, alcohol, or too much
caffeine or other stimulants, such as diet pills. Stopping the use of tobacco,
alcohol, caffeine, or other stimulants may help your heart rate return to
Cocaine, amphetamines, and methamphetamines.
Babies and children younger than 2 years old have higher
heart rates because their body metabolism is faster. Heart rates decrease as
children grow, and usually by the teen years the heart rate is in the same
range as an adult's.
A fast heart rate may be caused by a more
serious health problem. A heart problem or other medical conditions may sometimes
cause a fast heart rate. A fast heart rate may cause
lightheadedness, or fainting.
Olgin JE, Zipes DP (2015). Specific arrhythmias: Diagnosis and treatment. In DL Mann et al., eds., Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine, 10th ed., vol. 1, pp. 748–797. Philadelphia: Saunders.
Page RL, et al. (2015). 2015 ACC/AHA/HRS guideline for the management of adult patients with supraventricular tachycardia: A report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Rhythm Society. Circulation. DOI: 10.1161/CIR.0000000000000311. Accessed September 23, 2015.
ByHealthwise Staff Primary Medical ReviewerWilliam H. Blahd, Jr., MD, FACEP - Emergency Medicine Martin J. Gabica, MD - Family Medicine E. Gregory Thompson, MD - Internal Medicine Specialist Medical ReviewerDavid Messenger, MD H. Michael O'Connor, MD - Emergency Medicine
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