An arrhythmia is a problem with the rate or rhythm of your heartbeat. It means that your heart beats too quickly, too slowly, or with an irregular pattern. When the heart beats faster than normal, it is called tachycardia. When the heart beats too slowly, it is called bradycardia. The most common type of arrhythmia is atrial fibrillation, which causes an irregular and fast heart beat. Many factors can affect your heart’s rhythm, such as having had a heart attack, smoking, congenital heart defects, and stress. Some substances or medicines may also cause arrhythmias. Arrhythmia might not cause noticeable symptoms. However, a doctor may detect an arrhythmia during a routine examination or after requesting an electrocardiogram (EKG). Even if an individual notices symptoms, it does not necessarily mean that they have a severe arrhythmia. Some people with life threatening arrhythmias may have no symptoms, while others with symptoms may not have a severe arrhythmia.
|Known Toxin and Potential effects|
|Known Toxin and Potential effects||Cyanide, Methylene chloride||Antimony, Arsenic, Lead, Acetone, Benzene, Carbon tetrachloride, Carbon disculfide, Methylene chloride, Tetrachloroethylene, Trichloroethylene (TCE), Trichloroethane, Toluene (BTEX compounds), Xylene||Barium, Cadmium, Cobalt, Manganese, Nickel|