What should the nurse do to ensure the validity of comparison of electrocardiograms (ECGs) taken at different times?
A. Remove electrodes after each ECG is completed.
B. Place new ECG chest leads on the client before each ECG is completed.
C. Position the client supine prior to each ECG.
D. Ensure that electrode placement is identical for each ECG.
D
Positioning electrodes is crucial in obtaining an accurate ECG. To ensure validity of comparison of ECGs taken at different times, electrode placement must be accurate and identical at each test.
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