What heart rate defines bradycardia?

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Multiple Choice

What heart rate defines bradycardia?

Bradycardia means a slow heart rate, defined as a resting rate slower than normal for adults. The usual resting range is about sixty to a hundred beats per minute, so a rate below sixty is considered bradycardia. This threshold helps distinguish true slow heart rates from normal variation—such as in well-trained athletes who may have lower resting rates due to higher stroke volume and increased vagal tone. In clinical practice, the significance of a bradycardia depends on symptoms (dizziness, fatigue, syncope) and underlying causes (conduction system disease, medication effects, hypothyroidism, etc.). While very slow rates in the forties or fifties can occur, the defining boundary used is below sixty. Rates above a hundred are tachycardia, and rates within roughly the sixty to one hundred range are normal.

Bradycardia means a slow heart rate, defined as a resting rate slower than normal for adults. The usual resting range is about sixty to a hundred beats per minute, so a rate below sixty is considered bradycardia. This threshold helps distinguish true slow heart rates from normal variation—such as in well-trained athletes who may have lower resting rates due to higher stroke volume and increased vagal tone. In clinical practice, the significance of a bradycardia depends on symptoms (dizziness, fatigue, syncope) and underlying causes (conduction system disease, medication effects, hypothyroidism, etc.). While very slow rates in the forties or fifties can occur, the defining boundary used is below sixty. Rates above a hundred are tachycardia, and rates within roughly the sixty to one hundred range are normal.

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