For continuous ECG monitoring, what should be done to the skin before electrode placement?

Cleaning and drying the skin before electrode placement is essential for effective continuous ECG monitoring because it helps to ensure good electrode adhesion and optimal electrical conductivity. When the skin is clean, it minimizes impedance and allows the electrode to make better contact with the skin, which can lead to clearer ECG readings. Moreover, any moisture, oils, lotions, or dirt can act as a barrier, potentially leading to poor signal quality or intermittent loss of the ECG tracings.

The other options do not align with best practices for electrode placement. Having the skin moist and oily would hinder the electrode's ability to adhere properly and could create a poor conductive environment. Shaving and roughening the skin could lead to skin irritation or even abrasions, which are not conducive to maintaining skin integrity during monitoring. Clipping hair and ensuring dryness is better than some options but still doesn't emphasize the importance of cleaning the skin, which is a crucial step for preparation.