護理師正在教導病人有關慢性阻塞性肺病（COPD）的管理。下列何種陳述表示病人對氧氣治療的理解需要進一步指導？
A nurse is providing education on managing chronic obstructive pulmonary disease (COPD). Which statement by the client indicates a need for further teaching regarding oxygen therapy?
- AI can turn up the oxygen if I feel short of breath.✓ 正解如果我覺得呼吸急促，我可以調高氧氣濃度。
- BI should use oxygen as prescribed, even when I feel well.我應該按照醫囑使用氧氣，即使我覺得狀況良好。
- CHigh concentrations of oxygen may suppress my breathing drive.高濃度的氧氣可能會抑制我的呼吸驅動力。
- DI need to keep my oxygen equipment clean.我需要保持氧氣設備的清潔。
COPD 病人的呼吸驅動力（Respiratory drive）通常依賴於血氧水平（Hypoxic drive），而非正常人的二氧化碳濃度。因此，提供過高濃度的氧氣會抑制其呼吸中樞，導致二氧化碳滯留（CO2 retention），進而誘發呼吸衰竭。病人應嚴格遵照醫囑使用低流量氧氣。自行調高氧氣濃度是非常危險的行為，護理師必須確保病人理解此機轉，並強調不適時應聯繫醫療團隊。
Clients with COPD typically rely on hypoxic drive (rather than the carbon dioxide level used by healthy individuals) for their respiratory drive. Therefore, supplying excessively high oxygen concentrations suppresses the respiratory center, leading to CO2 retention and respiratory failure. The client must strictly follow the prescription for low-flow oxygen. Self-adjusting oxygen flow upward is extremely dangerous, and the nurse must ensure that the client understands this mechanism and is instructed to contact the healthcare team when symptoms worsen.