What heart rate defines tachycardia?

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Multiple Choice

What heart rate defines tachycardia?

A heart rate faster than the normal resting rate is tachycardia. In adults, tachycardia is defined as a resting heart rate above 100 beats per minute. The normal resting range is about 60–100 bpm, so rates below 60 are considered bradycardia and rates in the 60–100 range are normal. Thus, the threshold that best identifies tachycardia is greater than 100 bpm. Tachycardia can occur as a normal physiologic response (like during exercise, fever, or anxiety) or due to pathologic causes such as dehydration, anemia, hyperthyroidism, or certain heart rhythms. Understanding the distinction helps in recognizing when a fast rate is simply a transient response versus a indicator of an underlying issue.

A heart rate faster than the normal resting rate is tachycardia. In adults, tachycardia is defined as a resting heart rate above 100 beats per minute. The normal resting range is about 60–100 bpm, so rates below 60 are considered bradycardia and rates in the 60–100 range are normal. Thus, the threshold that best identifies tachycardia is greater than 100 bpm.

Tachycardia can occur as a normal physiologic response (like during exercise, fever, or anxiety) or due to pathologic causes such as dehydration, anemia, hyperthyroidism, or certain heart rhythms. Understanding the distinction helps in recognizing when a fast rate is simply a transient response versus a indicator of an underlying issue.

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