How should the nurse instruct a patient using a fentanyl transdermal patch to apply it?

The patient should apply the fentanyl transdermal patch on a clean, dry, and hairless area of the skin. Applying it on the forearm is suitable because it's a common site with less movement, which helps enhance the absorption of the medication. Additionally, avoiding hairy areas ensures the patch adheres properly and the medication can be delivered effectively without obstruction from hair.

Choosing an appropriate site for the patch is crucial for consistent drug absorption and minimizing discomfort. Sites on the body, like the abdomen, thigh, or back, can also be used, but the parameters for those locations need careful consideration regarding hair and movement. Ensuring the area is clear of hair allows the adhesive to stick better and the medication to penetrate the skin effectively, making the description of applying the patch on the forearm the most advisable choice.