What is the normal range for heart rate as measured on an EKG?

The normal range for heart rate as measured on an EKG is typically considered to be 60-100 beats per minute. This range represents the standard resting heart rate for adults, indicating that the heart is functioning optimally. Rates below 60 beats per minute may suggest bradycardia, while rates above 100 beats per minute may indicate tachycardia.

Maintaining a heart rate within this normal range is crucial for effective blood circulation and overall cardiovascular health. The heart adjusts its rate based on the body’s level of activity and overall physiological state, but resting heart rates consistently outside the 60-100 beats per minute range can be indicative of underlying health issues that may require further investigation.

In contrast, the other ranges presented do not reflect the widely accepted norms seen in healthy adults. For instance, a range of 50-80 beats per minute is too narrow and does not include the full spectrum of normalcy, while ranges of 70-120 and 40-100 extend into rates that could signify abnormal heart function unless under specific conditions. Thus, option A accurately captures the generally accepted normal heart rate range.