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Bradycardia

Definition

• Bradycardia is a slow heart rate (60 beats per minute or slower) that does not meet the body's metabolic demands. Symptoms of bradycardia include dizziness, extreme fatigue, shortness of breath, or fainting spells.

This can be compared to tachycardia which is an extremely rapid heart rate, usually signified by a pulse of over 100 beats per minute.

Additional Information

Adults usually have a resting heart rate of 70-80 beats per minute although well-trained athletes can have resting rates in the 50's or 60's. Newborn babies have a normal heart rate of 120-160 beats per minute. A slowed heart rate can lead to a variety of other problems. If you experience sudden bradycardia or any of the symptoms associated with it, contact your physician or emergency room immediately.

MSDS Relevance

This term usually appears on an MSDS as a symptom of exposure. First aid treatment may include administration of oxygen or treatment of the underlying cause(s). Long-term treatment may include the insertion of a pacemaker.

Further Reading Bradycardia at iVillage Health is a multi-page article on the topic. Note the additional page/links on the left side of the page. Slow Heartbeat at the Discovery Health Channel. Sinus Bradycardia (technical) at eMedicine.com. Bradycardia (Slow Heart Rate) - Overview at WebMD. Bradycardia, a multi-page article at MayoClinic.com. See also: hypoxia, syncope, tachycardia. Additional definitions from Google and OneLook.

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Disclaimer: The information contained herein is believed to be true and accurate, however ILPI makes no guarantees concerning the veracity of any statement. Use of any information on this page is at the reader's own risk. ILPI strongly encourages the reader to consult the appropriate local, state and federal agencies concerning the matters discussed herein.