A nurse is providing discharge teaching to a client who has cancer and a prescription for a fentanyl 25 mcg/hr transdermal patch. Which of the following instructions should the nurse include in the teaching?

A. "Remove the patch for 8 hours every day to reduce the risk of tolerance.": Fentanyl patches should remain in place for the prescribed duration (usually 72 hours) to maintain consistent pain control. Intermittent removal is not recommended and can result in breakthrough pain. B. "Avoid high-fiber foods while taking this medication.": High-fiber foods are not contraindicated with fentanyl. Clients should maintain a balanced diet, and fiber can help prevent opioid-induced constipation rather than being avoided. C. "Avoid hot tubs while wearing the patch.": Heat increases transdermal absorption of fentanyl, which can lead to overdose and respiratory depression. Clients should avoid hot tubs, heating pads, and prolonged sun exposure on the patch site. D. "Apply the patch to your forearm.": Fentanyl patches are typically applied to the chest, back, or upper arm, not specifically the forearm. Correct application sites are areas with minimal hair and intact skin to ensure proper absorption.