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A 28-year-old member asked:

What risks are attributed to bradycardia or tachycardia left untreated?

2 doctor answers7 doctors weighed in
Dr. Francis Uricchio
Cardiology 39 years experience
Depends: The risk of bradycardia is typically dizziness or passing out. On occasion, bradycardia can chest pain or heart failure. Tachycardia can chest pain, shortness of breath, dizziness, lightheadedness, stroke and passing out. Certain types of tachycardia are dangerous and can cause sudden death.
Dr. Shahin Tavackoli
Cardiology 24 years experience
Depends: Asymptomatic bradycardia is not associated with any risk usually, typically athletes have profound bradycardias and it is a sign of their fitness. Tachycardias when left untreated for an extended period of time (dependent on the rate and the age of the person) however can lead to a weak heart. This condition is usually reversible and is called tachycardia-induced cardiomyopathy.

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A 37-year-old member asked:

What risks are attributed to untreated bradycardia or tachycardia?

3 doctor answers6 doctors weighed in
Dr. Mary Callahan
Cardiology 30 years experience
Tachy or Brady: Aside from not feeling well with either of these, there is a likelihood that either can cause a cardiomyopathy or a weakness in the muscle. These rhythms can also cause a loss of consciousness or syncope. So, these arrhythmias should be treated and followed regularly.

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Last updated Jun 21, 2015
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