Sinus tachycardia is defined as heart rate greater than 100 beats per minute.

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Multiple Choice

Sinus tachycardia is defined as heart rate greater than 100 beats per minute.

Explanation:
Sinus tachycardia means the heart rate is strictly above 100 beats per minute. This makes rates like 90 bpm normal and not tachycardic, and 100 bpm is at the cutoff but not over it, so it doesn’t meet the definition. Values such as 110 and 120 bpm clearly exceed the threshold and are tachycardic. Among the options, the smallest value that shows this condition is 110 bpm, which best demonstrates sinus tachycardia by illustrating the rate just above the limit.

Sinus tachycardia means the heart rate is strictly above 100 beats per minute. This makes rates like 90 bpm normal and not tachycardic, and 100 bpm is at the cutoff but not over it, so it doesn’t meet the definition. Values such as 110 and 120 bpm clearly exceed the threshold and are tachycardic. Among the options, the smallest value that shows this condition is 110 bpm, which best demonstrates sinus tachycardia by illustrating the rate just above the limit.

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