護理師評估一位正處於躁期（manic phase）的雙相情緒障礙病人。下列哪項觀察最令人擔憂？
A nurse is assessing a client with bipolar disorder who is in a manic phase. Which observation is most concerning?
- ADecreased need for sleep睡眠需求減少
- BIncreased activity levels and talkativeness活動力增加及多話
- CInability to focus on a single topic無法專注於單一主題
- DEngaging in risky sexual behaviors✓ 正解從事危險的性行為
雙相情緒障礙（bipolar disorder）躁期（manic phase）病人的特徵是衝動、判斷力缺失與高能量。雖然多話、失眠與無法專注是典型的病徵，但「冒險性性行為（risky sexual behaviors）」對病人的健康、社會關係與法律安全具有立即且嚴重的威脅（如性病傳染、非預期懷孕）。護理師必須優先評估並介入可能威脅生命安全或導致嚴重後果的行為。
During the manic phase of bipolar disorder, impulsivity, impaired judgment, and high energy are typical. Although increased talking, decreased sleep, and inability to focus are characteristic, risky sexual behaviors pose immediate and severe risks to health, relationships, and legal status (e.g., STI transmission, unplanned pregnancy). The nurse must prioritize assessment and intervention for behaviors that may immediately threaten life or have serious consequences.