Tachycardia is a condition characterized by

Options

A. heart-rate decreases from the normal
B. heart-rate increases from the normal
C. heart-beat stops
D. heart fails to pump

Answer

B

Explanation

Tachycardia is a heart rate that exceeds the normal resting rate. In general, a resting heart rate over 100 beats per minute is accepted as tachycardia in adults. A healthy adult heart normally beats 60 to 100 times a minute when a person is at rest. Tachycardia occurs when an abnormality in the heart produces rapid electrical signals