What meant is by Tachycardia?

Tachycardia:

Tachycardia is a medical term for the conditions like rapid heart beat, fluttering heart or pounding of heart.

Causes for Tachycardia:

Sinus tachycardia (Photo credit: Wikipedia)

This condition occurs due to strong feelings of fear, excitement or anxiety or by over taxing the heart temporarily with sudden exertion or too much exercise. It may also be the sign of a heart disease, in such cases, it will be accompanied by other symptoms.

The most typical form of occasional rapid heart beat is called paroxysmaltachycardia. During this condition the heart beat suddenly becomes twice or thrice as the normal beats and then just as suddenly returns to its usual tempo.

When the paroxysms are frequent enough to be disturbing and no specific source is identified, they can be prevented by some medicines prescribed by the doctor.