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tachycardia
(redirected from atrial tachycardia)

    Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia, Hutchinson 0.02 sec.
tachycardia: see arrhythmia arrhythmia (ārĭth`mēə), disturbance in the rate or rhythm of the heartbeat.
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tachycardia

Heart rate over 100 (as high as 240) beats per minute. When it is a normal response to exercise or stress, it is no danger to healthy people, but when it originates elsewhere, it is an arrhythmia. Symptoms include fatigue, faintness, shortness of breath, and feeling the heart thumping. It may subside within minutes or hours with no lasting ill effects, but in serious heart, lung, or circulatory disease it can precede atrial fibrillation or heart attack and demands immediate medical attention. Tachycardias can be treated by an electric shock to the heart, by antiarrhythmic drugs, and by pacemakers.



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atrial tachycardia, atrial fibrillation, atrial flutter, sinus tachycardia), and noise or over-sensing events.
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