On EKG graph paper, the time between two heavy vertical lines is five small boxes, or sec.
A)0.12
B)0.20
C)0.08
D)0.04

Question

Quizplus · Accepted Answer

The time between two heavy vertical lines on EKG graph paper is called an R-R interval, and it represents one complete heartbeat. The length of an R-R interval can be calculated by counting the number of small boxes between the two lines and multiplying by 0.04 seconds (since each small box represents 0.04 seconds). Therefore, 5 small boxes x 0.04 seconds per small box = 0.20 seconds per R-R interval. Hence, the best choice is option B.

On EKG Graph Paper, the Time Between Two Heavy Vertical