MEDICAL
ARTERIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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voltage
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distance
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time
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current
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Detailed explanation-1: -The EKG paper records time sequences (horizontal deflections) and amplitude (vertical deflections) of the electrical activity of the heart. The horizontal lines measure time intervals and heart rate. Each of the small squares equal 0.4 second of time.
Detailed explanation-2: -The horizontal axis measures time. On a standard EKG the paper speed is 25 mm/s. Therefore, each 1 mm square on the horizontal axis equals 0.04 s, and each large square, 0.20 s.
Detailed explanation-3: -Horizontal lines measure time. Vertical lines measure voltage. A one second strip consists of 5 large blocks, three seconds equates to 15, six second equates to 30 and ten seconds equates to 50. Count the large blocks that fall between two R waves.