First-degree heart block: The electrical impulses slow down as they pass through the conduction system, but the signals all eventually and successfully reach the ventricles. First-degree heart block infrequently causes problems or symptoms. Trained athletes may have first-degree heart block. Some medications are known to cause this condition and treatment is generally not needed. Second-degree heart block (Type [...]
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Sep
Bradycardia Part I of III
A slow heartbeat (heart rate) is called bradycardia and is an arrhythmia, or a heart rhythm disorder. A normal heart beats about 100,000 times per day, at a usual rate between 60 to 100 times per minute. Changes in heart rate caused by diet, activity, age and medications are common and normal. What [...]