A nurse is providing teaching to a group of clients who are receiving radioactive isotope therapy. Which of the following information should the nurse include?

Radioactive isotope therapy involves the administration of therapeutic radioactive substances to treat conditions such as thyroid disorders or certain cancers. After treatment, clients temporarily emit radiation through bodily fluids, requiring strict radiation safety precautions to protect others from exposure. These precautions focus on minimizing contamination, maintaining distance, and properly disposing of waste. Education is essential to ensure both client and public safety during the radiation elimination period. A. Using cloth handkerchiefs instead of disposable tissues is unsafe because bodily fluids may contain radioactive material. Disposable tissues should be used and discarded appropriately to reduce contamination risk and prevent prolonged exposure to radiation. Cloth items could retain radioactive particles and increase exposure to others. B. Flushing the toilet with the lid closed three times after use is appropriate because it helps reduce the spread of radioactive bodily fluids into the environment. Closing the lid minimizes aerosolization and splashing, and multiple flushes help dilute and remove radioactive waste more effectively. This is a key radiation safety precaution. C. Using absorbent briefs for incontinence is not recommended because they can become contaminated with radioactive urine or feces and increase exposure risk to caregivers and waste handlers. If incontinence occurs, strict radiation precautions and specialized handling protocols are required instead. D. Remaining at least 1 foot away from young children is incorrect because radiation safety guidelines typically require a much greater distance, often at least 3 to 6 feet depending on the isotope and facility protocol. Closer proximity increases the risk of radiation exposure, especially for vulnerable populations such as children.