NCLEX RN Practice Question # 888

NCLEX RN Practice Question # 888. Basics of Electrocardiography ▪ An electrocardiogram (ECG) reflects the electrical activity of cardiac cells and records electrical activity at a speed of 25 mm/second. ▪ An electrocardiographic strip consists of horizontal lines representing seconds and vertical lines representing voltage. ▪ Each small square represents 0.04 second. ▪ Each large…

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