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Found Tachycardia 2 times.

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1. Tachycardia
Tachycardia is an abnormally fast heart rate. In healthy adults, the normal resting heart rate is about 70-80 beats per minute (athletes often have resting heart rates in the 60s and sometimes lower). In newborn babies, the normal heart rate is 120-160 beats per minute.

2. Tachycardia-bradycardia syndrome
Tachycardia-bradycardia syndrome is a form of sick sinus syndrome of the heart in which the rhythm is sometimes in supraventricular tachycardia (abnormally fast heartbeat) and sometimes in bradycardia (abnormally slow heartbeat).

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