MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The horizontal line on the graph paper measures:
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respirations
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burn of the stylus
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voltage
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time
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Explanation:
Detailed explanation-1: -Horizontal axis of theECG graph paper represents time in milliseconds (ms) while the vertical axis represents amplitude or voltage in millivolts (mV). Each1-mm-division on the horizontal axis is 40 ms; each 5-mm-division is 200 ms. Two 5-mm-divisions on the vertical axis are calibrated to represent 1 mV.
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: -The standard paper speed is 25mm/sec: 1 SMALL square (1mm) = 0.04 sec (40ms) 5 SMALL squares (5mm) = 1 LARGE square = 0.2 sec (200ms)
There is 1 question to complete.