Which of the following can be used to measure heart rate?

Question

Quizplus · Accepted Answer

R-R interval measures the time between two consecutive R waves in an electrocardiogram (ECG), which can be used to determine heart rate. A shorter R-R interval indicates a faster heart rate, while a longer R-R interval indicates a slower heart rate. P-R interval, S-T segment, and Q-T interval are all measures of different aspects of the cardiac cycle, but they are not as reliable as R-R interval for measuring heart rate.

Which of the Following Can Be Used to Measure Heart