What should be done if alcohol is used to prepare the skin for electrodes?

When preparing the skin for electrode application, it's important to allow the alcohol to dry prior to application. Alcohol serves as a disinfectant, cleaning the skin and reducing the risk of infection. However, if electrodes are applied immediately after using alcohol, the moisture may prevent the electrodes from adhering properly to the skin, compromising the quality of the electrical signal and potentially affecting the outcomes of the procedure.

Allowing the alcohol to evaporate ensures that the skin is dry and that the adhesive properties of the electrodes are maximized, leading to a more reliable and effective application. Additionally, drying time allows any residual alcohol to dissipate, which can help avoid skin irritation that may arise from applying electrodes to damp skin.

The other options do not adequately address the importance of ensuring a dry surface for optimal adhesion and signal quality.