護理師照護一位接受體內放射治療（近接治療）的病人。護理師必須遵守哪項安全規則？
A nurse is caring for a client receiving internal radiation (brachytherapy). Which safety rule must the nurse follow?
- AKeep all linens in the room until the radiation source is removed在放射源移除前，將所有床單留在房間內
- BSpend at least 1 hour in the room per shift to provide support每班在房間內至少停留一小時以提供支持
- CWear a lead apron during all care for the client在照顧病人期間全程穿著鉛圍裙
- DAllow visitors for no more than 30 minutes per day✓ 正解允許訪客每天探視時間不超過30分鐘
照護接受體內放射治療（brachytherapy）的病人時，護理師必須嚴格遵守放射線安全的三大原則：時間（Time）、距離（Distance）和屏障（Shielding），以將自身及他人的輻射暴露降至最低（ALARA原則：As Low As Reasonably Achievable）。近接治療是將放射源直接置入或靠近腫瘤部位，雖然輻射範圍相對集中，但仍會對周圍環境產生輻射。因此，限制訪客的探視時間是降低他們輻射暴露的重要措施，確保在提供必要的社會支持的同時，不危及訪客的健康。
Care for clients receiving internal radiation must adhere to ALARA principles by minimizing exposure time, maximizing distance, and using shielding. Limiting visitor time to 30 minutes per day reduces radiation exposure to others, while staff should limit their own presence in the room to protect themselves from cumulative dose effects.
美國對放射性廢棄物處理有極嚴格的分級；台灣亦然，但護理師配戴劑量計 (Dosimeter) 的規定執行更為普遍。