Final answer:
The correct action when administering a medication via a transdermal patch is to remove the previous patch before applying a new one, ensuring proper absorption and avoiding skin irritation.
Step-by-step explanation:
When administering a medication via a transdermal patch, the appropriate action of the nurse is to remove the previous patch prior to placement. This ensures that the new medication is absorbed properly without interference from any residual medication from the old patch.
It is important not to apply lotion to the skin prior to placement, as this could affect the patch's adhesion and the medication's absorption. Similarly, heat therapy should not be applied over the patch after placement because it can alter the medication release rate. Rotating the site of application can help prevent skin irritation and improves adherence of the medication.