一位 25 歲女性諮詢避孕方式。下列哪項敘述顯示她理解子宮帽（diaphragm）的使用方法？
A 25-year-old female client requests information about contraceptive options. Which statement indicates she understands the use of a diaphragm?
- AThe diaphragm provides complete protection against sexually transmitted infections.子宮帽可提供完全防護，避免性傳染病的感染。
- BI should insert the diaphragm immediately before intercourse.我應該在性交前立即插入子宮帽。
- CI must leave the diaphragm in place for at least 6 hours after intercourse.✓ 正解性交後，我必須讓子宮帽繼續留在體內至少 6 小時。
- DI can reuse the same diaphragm for up to 5 years without replacement.我可以重複使用同一個子宮帽長達 5 年而無需更換。
子宮帽需在性行為後放置至少 6 小時以確保精子失去活性，但不宜超過 24 小時以免引發中毒性休克症候群（TSS）。選項 B 應配合殺精劑使用；A 為錯誤觀念，避孕工具無法預防性病；D 子宮帽需定期檢查尺寸，若體重增減 10 磅或生產後需重新配對。
A diaphragm must remain in place for at least 6 hours after intercourse to ensure sperm are no longer viable, but it should not be left in for more than 24 hours because of the risk of toxic shock syndrome (TSS). Option B: the diaphragm should be used with spermicide; option A is a misconception, as a diaphragm does not protect against sexually transmitted infections; option D: the diaphragm's fit should be re-evaluated periodically, with refitting required after a weight change of 10 pounds or after childbirth.
台灣門診多由醫師衛教，美國則常見由護理師或執業護理師（NP）進行完整的性健康諮詢與衛教指導。