Bergqvist A, Rybo G
Br J Obstet Gynaecol. 1983 Mar;90(3):255-8. doi: 10.1111/j.1471-0528.1983.tb08620.x.
In 12 women with menorrhagia (greater than or equal to 80 ml per menstrual period) a progesterone-releasing device (Progestasert) was inserted. The women were followed by repeated measurements of the blood loss for 12 periods. The menstrual blood loss was significantly reduced after 1 month but the duration of bleeding was somewhat prolonged. Twelve months after insertion the menstrual blood loss amounted to 35% of the blood loss before the insertion. The Progestasert is a valuable treatment for menorrhagia.
对12名月经过多（每个月经周期出血量大于或等于80毫升）的女性插入了释放孕酮的宫内节育器（普维拉）。对这些女性进行了12个周期的反复失血量测量。1个月后月经量显著减少，但出血时间略有延长。放置12个月后，月经量为放置前失血量的35%。普维拉是治疗月经过多的一种有效方法。
