Question

In an ECG recording, the RR interval is 0.5 seconds. What is the heart rate? A. 50 beats/min B. 100 beats/min C. 30 beats/min D. 60 beats/min E. 120 beats/min

Answer 1

To calculate the heart rate from the RR interval, you need to divide 60 by the RR interval in seconds.

In this case, the RR interval is 0.5 seconds. So, the heart rate would be:

Heart rate = 60 / 0.5 = 120 beats/min

Therefore, the correct answer is E) 120 beats/min.

Step-by-step explanation: