Clinical Medical Assistant Exam Practice Question

Correct Answer: D

Rationale: When applying a Holter monitor, preparing the skin is crucial for optimal electrode adherence and accurate readings. Shaving or cleaning the areas ensures that the electrodes can securely attach, preventing artifacts in the data.

Option A is incorrect; fasting is not required for Holter monitoring. Option B is misleading, as dye injections are used in other procedures, like imaging studies, not in Holter monitoring. Option C is also incorrect; local anesthetics are unnecessary since electrode placement is generally painless. Thus, proper skin preparation is the key step for effective monitoring.