You are performing a 12-lead ECG on a hospital patient using a portable ECG machine on a cart. As you are conducting the ECG, a red line appears at the bottom of the ECG graph paper. What should you do?
A. Continue the ECG, but make a note on the ECG tracing that the patient moved during the recording.
B. Continue the ECG, but remember to replace the paper before performing the next ECG.
C. Stop the ECG and replace the paper, then resume conducting the ECG.
D. Stop the ECG and check the placement of the electrodes.
Answer: B
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