A normal heart rate is between 60 to 100 beats per minute (BPM), but it can vary by person. A heart rate slower than 60 BPM can be a sign of anything from a high fitness level to hypothyroidism.

On average, though, the AHA says a resting heart rate of 60 to 100 beats per minute (bpm) is “normal” for most adults.

A heart rate below 60 beats per minute (bpm) is typically considered low, but that doesn’t always mean there’s a problem.

There are regular P waves at a rate of 60 beats per minute. The QRS complexes show “grouped beating.” Three of the first four P waves are conducted with increasing PR intervals; the first beat ...

Referencing the above image, it can be determined that the ventricular heart rate is between 50 and 60 bpm. This is a full 10-second rhythm strip, and there are nine QRS complexes total.