Glossary

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Cardiac arrhythmias: These occur when the heart momentarily beats too fast or irregularly. Chest pain, dizziness and shortness of breath are symptoms. Atherosclerosis, angina, valvular heart disease, blood clots, thyroid abnormalities or heart attack can cause this condition. Arrhythmias may be frequent or infrequent. Medications can help stabilize heart rhythms. Abstaining from caffeine, alcohol and cigarette smoking can also help.