A nurse is reinforcing teaching with a client who has cancer and is undergoing external radiation therapy. Which of the following instructions should the nurse include in the teaching?

A) "Wash the site daily with warm water": The nurse should instruct the client to wash the radiation treatment site gently with warm water and mild soap (without scrubbing or using harsh soaps). This helps to cleanse the skin without irritating it. Keeping the skin clean can help prevent infection and minimize irritation during the course of radiation therapy. It's important not to use hot water or harsh chemicals, as the skin in the treated area can be sensitive. B) "Wash skin markings off after each treatment": Skin markings are placed on the client's skin by the radiation oncologist to ensure the radiation is targeted precisely. These marks should not be washed off, as they are necessary for the planning and delivery of radiation. Washing off the marks could affect the accuracy of the treatment. C) "Apply lotion to the site after treatment": While it may seem like a good idea to apply lotion to moisturize the skin, clients undergoing radiation therapy should avoid applying any lotions, creams, or ointments to the radiation site unless specifically prescribed by their healthcare provider. Some lotions or creams may contain chemicals that could irritate the skin further or interfere with the radiation treatment. Only approved products should be used. D) "Cover the site with a transparent dressing": Covering the radiation treatment site with a transparent dressing is typically not recommended unless the client has an open wound or is instructed to do so by the healthcare provider. The treated skin should be left exposed to air to promote healing unless advised otherwise. Covering the site could trap moisture, leading to skin irritation or infection.