Final answer:
The best intervention for a client with mucositis post-head and neck radiation is to apply petroleum-based lip balm to soothe and protect the lips. Rinsing with harsh substances, consuming spicy foods, or hot beverages can worsen symptoms, while special mouthwashes may help prevent dry mouth and cavities.
Step-by-step explanation:
The appropriate intervention to include in the plan of care for a client with mucositis following head and neck radiation therapy is to apply petroleum-based lip balm. This can help to soothe and protect the lips, which can become dry and cracked as a side effect of radiation. Other options such as frequent mouth rinses with substances like hydrogen peroxide can actually be harmful to the delicate mucous membranes after radiation and are not recommended. Spicy foods and hot beverages may exacerbate the discomfort and should be avoided.
Special mouthwashes designed to reduce dry mouth and prevent cavities may be beneficial instead. It is also important to note that medications, including narcotics for pain management along with antiemetics like zofran and phenergan, can assist with the management of other radiation therapy side effects like intense pain and nausea respectively.