You are attempting to record an ECG for Mr. Potter, a 72-year-old patient who has Parkinson's disease. Knowing this, you automatically place the limb electrodes close to the trunk. However, the tracing looks as shown in the picture. What artifact is present and what can you do to fix it?
A. AC interference; turn off nearby electrical equipment
B. Somatic interference; wait until Mr. Potter's tremors subside
C. Extraneous marks; avoid using paper clips on the graph paper
D. Flat line; check pulse and respiration, then begin CPR
E. wandering baseline; check for loose electrodes
Answer: B
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