— 安全與感染控制 · HARD · MCQ —
一位接受近接放射治療（植入性）的病人，下列哪項隔離預防措施最重要？
A nurse is caring for a client with a radioactive implant for brachytherapy. What precaution is most important?
- APlace the client in a private room with ventilation將病人安置在具有通風的私人病房
- BKeep the door closed at all times隨時保持房門關閉
- CWear a lead apron when in the room在房間內穿著鉛衣
- DLimit the duration of exposure✓ 正解限制曝露時間
— Explanation · 中文詳解 —
放射線安全三大原則為：時間（Time）、距離（Distance）、屏蔽（Shielding）。對於近接治療，限制與病人接觸的時間是最有效的曝露控制。雖然鉛裙（屏蔽）有幫助，但在病房內長時間逗留仍具風險，且原則上是以「限制時間」與「增加距離」為主。
The three cardinal principles of radiation safety are time, distance, and shielding. For brachytherapy, limiting the duration of contact with the patient is the most effective means of exposure control. Although a lead apron (shielding) is helpful, prolonged time in the room still poses risk; the primary strategies remain limiting time and increasing distance.
✦ 台美臨床差異
美台皆有嚴格的輻射防護指引，美國放射性物質管理更加重視劑量監測與徽章佩戴。