護理師正為病人進行大腸鏡檢查前的準備，哪項護理介入對降低檢查失敗風險至關重要？
A nurse is preparing a client for a scheduled colonoscopy. Which intervention is essential for reducing the risk of a suboptimal procedure?
- AEncouraging high-fiber intake the day before the procedure鼓勵在檢查前一天攝取高纖維食物
- BInforming the client that they will be awake during the procedure告知個案在檢查過程中會保持清醒
- CEnsuring the client remains on bed rest until the procedure starts確保個案在檢查開始前持續臥床休息
- DAdministering a clear liquid diet for 24 hours prior to the exam✓ 正解在檢查前 24 小時給予清流質飲食
核心概念：檢查前的腸道準備。大腸鏡成功的關鍵在於腸道乾淨度（bowel clearance）。為何正確答案對：清流質飲食（clear liquid diet）能大幅減少大腸內的糞便殘留，讓內視鏡能清楚觀察黏膜。為何其他選項錯：選項 B 錯誤，通常會有鎮靜；選項 A 的高纖維飲食會增加糞便量，導致視野不清，是檢查前的禁忌；選項 C 臥床與腸道準備無關。臨床思路：減少風險的關鍵在於確保「診斷工具能發揮最大效用」。若腸道不淨，可能漏掉病灶或需重新檢查，增加病人負擔與麻醉風險。
A clear liquid diet for 24 hours prior to the procedure is essential to minimize fecal residue and ensure adequate visualization of the intestinal mucosa. High-fiber foods should be avoided as they increase stool bulk, which can obscure the view during the colonoscopy. Proper bowel preparation is critical for diagnostic accuracy and procedural success.
美國的大腸鏡準備多在居家完成，護理師透過電話或說明書進行衛教；台灣則有較多比例的病人住院進行腸道準備，護理師會直接監督清流質飲食的執行狀況。