CCTN - CLINICAL EVALUATION OF LONG ACTING REVERSIBLE CONTRACEPTIVES

目的：评价长效可逆避孕药(LARC)在育龄妇女中的避孕效果、插入疼痛、出血模式、相关抽筋、排出率以及其他安全性和副作用。尤尼斯·肯尼迪·施莱弗国家儿童健康和人类发展研究所(NICHD)下的避孕发现和发展处(CDDB)致力于开发长效可逆避孕的新方法，为可能对某些避孕产品有危险因素的妇女提供安全有效的避孕措施，并降低静脉血栓栓塞症(VTE)的风险。铜质宫内节育器(IUD)是宫内系统的一个例子，它在没有外源性激素或干扰正常月经周期的情况下提供长效避孕益处。

To evaluate contraceptive efficacy, pain of insertion, bleeding patterns, associate cramping, expulsion rates as well as other safety and side effects of the long acting reversible contraceptive (LARCs) in women of reproductive age. The Contraceptive Discovery and Development Branch (CDDB) under the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) is committed to develop new methods that are long acting reversible contraceptives that can provide safe and effective contraception for women who may have risk factors against some contraceptive products as well as reduce the risk of venous thromboembolism (VTE). The copper intrauterine devices (IUDs) are example of intrauterine systems that provide long acting contraceptive benefits without exogenous hormones or disruption of the regular menstrual cycle.