What heart rate defines tachycardia?

What heart rate defines tachycardia?

• A. Heart rate greater than or equal to 100 bpm
• B. Heart rate less than 60 bpm
• C. Heart rate between 60 and 100 bpm
• D. Heart rate greater than 120 bpm

Answer: (A)

Tachycardia means the heart is beating faster than the normal resting rate. In adults, the standard cutoff used to define this condition is a resting heart rate of 100 beats per minute or higher. This sets apart tachycardia from bradycardia (below 60 bpm) and from normal resting rates (roughly 60–100 bpm). While a rate over 120 bpm is clearly fast, the defining threshold commonly used is 100 bpm or more.

Tachycardia means the heart is beating faster than the normal resting rate. In adults, the standard cutoff used to define this condition is a resting heart rate of 100 beats per minute or higher. This sets apart tachycardia from bradycardia (below 60 bpm) and from normal resting rates (roughly 60–100 bpm). While a rate over 120 bpm is clearly fast, the defining threshold commonly used is 100 bpm or more.