護理師協助病人進行需要知情同意的程序，下列哪項是護理師的角色？
A nurse is preparing a client for a procedure that requires informed consent. Which is the nurse's role?
- AExplain the risks and benefits of the procedure解釋該程序的風險與益處
- BWitness the client's signature on the form✓ 正解見證客戶在表格上的簽名
- CObtain the signature for the physician代醫師取得簽名
- DEnsure the client understands the procedure確保客戶了解該程序
知情同意（informed consent）的責任分工：醫師（physician）負責解釋處置的風險、好處、替代方案——這是醫師的職責；護理師的角色為：B. 見證病人簽署同意書（witness the signature），並確認病人能理解處置內容。其他選項：A. 解釋風險與好處是醫師的職責；C. 護理師可協助澄清但「確認病人理解處置」屬醫師責任；D. 護理師絕不可替醫師簽名，這違反法律與倫理。
Responsibility for informed consent is divided as follows: the physician is responsible for explaining the procedure's risks, benefits, and alternatives - this is the physician's duty. The nurse's role is option B: to witness the client's signature on the form and confirm that the client appears to understand the procedure. As for the other options: A. Explaining the risks and benefits is the physician's responsibility; C. The nurse may help clarify, but 'ensuring the client understands the procedure' is ultimately the physician's responsibility; D. The nurse must never sign on behalf of the physician, as this is both illegal and unethical.