Brenner P F
Contraception. 1983 Aug;28(2):135-47. doi: 10.1016/0010-7824(83)90013-6.
The Copper T-220C intrauterine device was modified for use in early postpartum insertions. Biodegradable extensions consisting of No. 2 chromic suture were added to the horizontal arms of the device to enhance retention. This new device, Delta-T IUD, was inserted in 100 patients within 55 hours of the delivery of the placenta. No uterine perforations or cervical lacerations occurred in this study. There was one accidental pregnancy 4 months following the IUD insertion. Seven IUDs were removed for bleeding and pain. There was one case of postpartum endometritis. Seventeen IUD expulsions occurred. Expulsions were more frequent at the beginning of the study and when the IUD was inserted more than 30 minutes after delivery of the placenta. The immediate postpartum insertion of IUDs with the event rates observed in this study is acceptable in situations where alternatives for other family planning modalities or interval insertion of intrauterine devices are not feasible.
铜T - 220C宫内节育器经过改良，用于产后早期放置。在该节育器的横臂上添加了由2号铬制缝线组成的可生物降解延长部分，以增强固定效果。这种新的节育器，即Delta - T宫内节育器，在100名患者胎盘娩出后55小时内进行了放置。本研究中未发生子宫穿孔或宫颈裂伤。放置宫内节育器4个月后有1例意外妊娠。7例因出血和疼痛取出宫内节育器。有1例产后子宫内膜炎。发生了17例宫内节育器排出。在研究开始时以及在胎盘娩出后30分钟以上放置宫内节育器时，排出情况更为频繁。在其他计划生育方式的替代方法或宫内节育器间隔放置不可行的情况下，按照本研究中观察到的事件发生率，产后立即放置宫内节育器是可以接受的。
