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ACCS Respiratory Practice Exam

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Tachycardia is defined as a heart rate exceeding which threshold?
Correct Answer:
>100 bpm
Explanation:
The key idea is how tachycardia is defined by resting heart-rate thresholds. In adults, a normal resting heart rate ranges from about 60 to 100 beats per minute. Tachycardia is defined as the heart rate exceeding 100 beats per minute. That’s why the option describing a heart rate greater than 100 bpm is the correct one. The other values correspond to bradycardia (<60 bpm) or a normal range (60–100 bpm) and do not describe tachycardia. Keep in mind tachycardia can occur with exercise or fever, but clinically it’s defined by resting rate above 100 bpm.

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