Question

The time interval between two successive normal heart beat rate is nearly :

(i)0.84 seconds

(ii)0.81 seconds

(iii)1.88 seconds

(iv)none of the above​

Answer 1

Answer:

I THINK IT'S

(iv)none of the above

Hope this answer helps you!

Explanation:

On standard paper with the most common tracing settings, the heart rate is calculated by dividing the number of large boxes (5 mm or 0.2 seconds) between two successive QRS complexes into 300.

Answer 2

Explanation:

The time between beats is measured in milliseconds (ms) and is called an “R-R interval” or “inter-beat interval (IBI).” While heart rate focuses on the average beats per minute, heart rate variability (HRV) measures the specific changes in time (or variability) between successive heart beats.