Final answer:
Fentanyl patches are used for the treatment of chronic pain and are typically applied every 72 hours, which is none of the options given. It's critical to follow the specific instructions provided with the medication or by a healthcare provider for safe application.
Step-by-step explanation:
Fentanyl patches are a form of pain medication used to treat chronic pain. Fentanyl patches are designed to release medication over a long period of time and are generally applied every 72 hours, which is not one of the options provided in the question. Therefore, it's important to consult the instruction that comes with the prescription or speak to a healthcare provider for the correct usage guidelines. These patches should be replaced according to the prescribed schedule as overuse can lead to overdose or other serious side effects.
Safe application practices must be followed, and the old patch must be disposed of properly to prevent accidental exposure to others, especially children and pets.