The nurse notes that leads I, II, and III differ from one another on the cardiac rhythm strip because:

A) The view of the electrical current changes in relation to the lead placement.
B) Conduction of the heart differs with lead placement.
C) Electrocardiogram (ECG) equipment has malfunctioned.
D) The circadian rhythm has changed.


Ans: A
Feedback: Each lead offers a different reference point to view the electrical activity of the heart. The lead displays the configuration of electrical activity of the heart.

Nursing

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