Abstract
Intrauterine devices are an effective method of birth control. Their use has resulted in pregnancy in a small number of women. If the device is left in situ after conception occurs, the pregnancy is often associated with infection and bleeding. The device apparently exerts its major effect on the uterus and offers little contraceptive protection to the fallopian tube and ovaries.
摘要
宫内节育器是一种有效的避孕方法。使用宫内节育器仍有少数女性怀孕。如果在受孕后宫内节育器仍留在原位，妊娠常伴有感染和出血。宫内节育器显然主要作用于子宫，对输卵管和卵巢几乎没有避孕保护作用。
Zotero 插件