Bradycardia is defined as which of the following?

Bradycardia is indeed defined as a heart rate that is less than 60 beats per minute. This condition signifies a slower than normal heart rhythm, which can be a normal finding in some individuals, especially athletes or during sleep. However, in other contexts, it may indicate an underlying health issue or cardiac condition that may require further evaluation or treatment.

The other options describe different scenarios: a heart rate above 100 beats per minute would indicate tachycardia, a normal heart rate typically lies between 60 and 100 beats per minute, and the range of 60 to 100 beats per minute itself is not associated with bradycardia at all. Understanding these distinctions is crucial for recognizing heart rate abnormalities and their clinical implications.