What Causes Exercise Intolerance?

Cardiac Arrhythmia

Cardiac arrhythmia is the medical term for heart rhythm problems. These occur when the body's electrical impulses fail to properly coordinate the heartbeats, which makes the heart beat irregularly, too slow, or too fast. Heart arrhythmias might feel like your heart is racing or fluttering. They have the potential to be harmless, but some can cause symptoms and signs that might be either bothersome or potentially life-threatening. Treatment for the condition is often able to eliminate or control irregular heartbeats. Some arrhythmias don't have any symptoms at all. When there are symptoms, they tend to be a feeling of fluttering in the chest, a slow heartbeat, a racing heartbeat, or chest pain. The condition can cause exercise intolerance when it presents with shortness of breath, dizziness, lightheadedness, and fainting or near-fainting episodes.

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