Use of the Copper T380A intrauterine device by adolescent mothers: continuation and method failure

Recent progress in advanced biomaterials for long-acting reversible contraception

Unintended pregnancy is a global issue with serious ramifications for women, their families, and society, including abortion, infertility, and maternal death. Although existing contraceptive strategies have been widely used in people's lives, there have not been satisfactory feedbacks due to low contraceptive efficacy and related side effects (e.g., decreased sexuality, menstrual cycle disorder, and even lifelong infertility). In recent years, biomaterials-based long-acting reversible contraception has received increasing attention from the viewpoint of fundamental research and practical applications mainly owing to improved delivery routes and controlled drug delivery. This review summarizes recent progress in advanced biomaterials for long-acting reversible contraception via various delivery routes, including subcutaneous implant, transdermal patch, oral administration, vaginal ring, intrauterine device, fallopian tube occlusion, vas deferens contraception, and Intravenous administration. In addition, biomaterials, especially nanomaterials, still need to be improved and prospects for the future in contraception are mentioned.

Pooled incidence of continuation and pregnancy rates of four contraceptive methods in young women: a meta-analysis

BACKGROUND

Continuation rates of contraceptive methods in young women vary among studies, and there is scarce data regarding the pregnancy rate in this population.

METHODS

Four independently systematic searches were performed in PUBMED, EMBASE, LILACS, and Cochrane databases from inception until January 2021 for oral contraceptive pill (OCP), copper IUD, levonorgestrel intrauterine system (LNG-IUS), and subdermal implant. Inclusion criteria were observational or RCT studies that reported continuation for at least 12 months and/or pregnancy rate of these contraceptives methods in girls aged 22 years old or younger. Two authors extracted data from the study design and the outcomes. Pooled proportions of each method were applied using the inverse variance in all calculations with LOGIT transformation, using the random-effects model. Cochrane collaboration tool and New Castle-Ottawa were used to assess the quality and bias of all included studies. GRADE criteria evaluated the quality of evidence.

RESULTS

Continuation rate for OCP was 51% (95%CI 34%-68%), while for cooper IUD was 77% (95%CI 74%-80%), LNG-IUS 84% (95%CI 80%-87%), and implant 85% (95%CI 81%-88%). The pooled estimated pregnancy rate for OCP was 11% (95%CI 6%-20%), while for cooper IUD was 5% (95%CI 3%-7%), LNG-IUS 1.6% (95%CI 1.2%-2.3%), and implant 1.8% (95%CI 0.4%-8.4%).

CONCLUSION

Long-acting contraceptive methods presented higher continuation rates and lower pregnancy rates when compared to OCPs.

Determinants of Long-acting Reversible Contraception (LARC) Initial and Continued Use among Adolescents in the United States

Long-acting reversible contraception (LARC) has gained attention as a promising strategy for preventing unintended adolescent pregnancies in the United States. However, LARC use among adolescents at risk for pregnancy remains low compared to women in their 20s. The purpose of the current study was to synthesize the empirical literature published between 2010 and 2018 identifying the facilitators of and barriers to adolescents' (< age 20) LARC use in the United States. Thirty quantitative and qualitative studies were included in the current systematic review. The facilitators of and barriers to adolescent LARC use fell within five themes: LARC method characteristics, individual characteristics, social networks, healthcare systems, and historical time and geographical region. Barriers to adolescent LARC use largely echoed those identified in previous research noting the barriers to LARC use among young adult women (e.g., provider concerns with placing IUDs for nulliparous women, common adverse side effects associated with some LARC methods). However, qualitative studies identified adolescents' mothers as central figures in helping adolescents successfully obtain the LARC methods they desired. Conversely, adolescents' partners seemed to only play a minor role in adolescents' contraceptive decisions. Findings within the reviewed studies also suggested some subpopulations of adolescents may be experiencing pressure to initiate LARC use or have less ability to have their LARC device removed if they wish to discontinue use. Adolescent health practitioners and clinicians should consider the unique social-environmental influences of adolescents' contraceptive access and behaviors to best meet adolescents' contraceptive needs and desires.

Studies of acute and subchronic systemic toxicity associated with a copper/low-density polyethylene nanocomposite intrauterine device

Introduction

The physiologic safety of devices and materials intended for clinical implantation should be evaluated. This study, a logical extension of our previous work, aimed to investigate the safety of a novel contraceptive device, the copper/low-density polyethylene nanocomposite intrauterine device (nano-Cu/LDPE IUD), through studies of its potential toxicity after acute and subchronic administration in mice and rats.

Methods

For the acute toxicity study, single 50 mL/kg doses of nano-Cu/LDPE IUD extracts were administered to mice via intravenous or intraperitoneal injection. General behavioral adverse effects, mortality, and body weights were evaluated for up to 72 hours. In the 13-week subchronic toxicity study, the nano-Cu/LDPE composite with 10-fold higher than the standard clinical dose was implanted subcutaneously into the dorsal skin of Wistar rats. The control group underwent a sham procedure without material insertion.

Results

During all acute study observation times, the biologic reactions of the mice in the nano-Cu/LDPE group did not differ from those observed in the control group. The groups did not differ statistically in terms of body weight gain, and no macroscopic changes were observed in any organs. In the subchronic study, no clinical signs of toxicity or mortality were observed in either the nano-Cu/LDPE or control group during the 13-week period. The nano-Cu/LDPE composite did not cause any alterations in body weight, food consumption, hematologic and biochemical parameters, or organ weight relative to the control for any observed sample group. Histopathologic examinations of the organs revealed normal architecture, indicating that the inserted material did not cause morphologic disturbances in the rats.

Conclusion

Overall, the results indicate that the nano-Cu/LDPE IUD did not induce systemic toxicity under experimental conditions of the recommended standard practices, suggesting that the novel material IUD is safe and feasible for future contraceptive applications.

Postpartum contraception in adolescents: data from a single tertiary clinic in southeast of Turkey

Aim:

We aimed to evaluate the postpartum contraception preferences of adolescent women in this study.

Material and Method:

This descriptive study was prepared after a retrospective analysis of file records of primigravida women who had given birth at the Adiyaman University School of Medicine Training and Research Hospital Department of Obstetric and Gynecology between January 2010 and June 2012. More than 12 months had passed after birth. The adolescents who were included in the study and the control group women were called by phone and invited to our clinic. A total of 506 adolescents and 1,046 control group women came to the clinic and were evaluated. The control group was formed of women between the age of 20-35 years who gave given birth in our clinic during the same period and were randomly selected. Postpartum obstetric history, contraception methods and data of these patients were recorded.

Results:

The mean age was 18.3±0.4 years and 28.2±4.9 years in the adolescent group and control group respectively. No contraception other than lactation amenorrhea was used by 256 women of the adolescent group (50.6%) and 345 women of the control group (33%). The most commonly used contraceptive method in both groups other than lactation amenorrhea was condoms (160 women (64%) and 230 women (32.8%) respectively). The annual contraceptive failure rate was 3.95% in the adolescent group and 1.72% in the control group. The highest failure rate was with lactation amenorrhea in both groups.

Discussion:

Adolescent women mostly use contraceptive methods with low reliability such as lactation amenorrhea and the calendar method in the postpartum period. Providing adequate contraceptive education is therefore important. On the other hand, starting such training starting in the early postnatal period will prevent recurring adolescent pregnancies with a short pregnancy interval.

Continuation of copper-containing intrauterine devices at 6 months

BACKGROUND

Intrauterine devices (IUDs) are highly effective at preventing pregnancy and cost-effective. Suboptimal continuation of IUDs places women at risk of unintended pregnancy. Little is known about prevalence or predictors of discontinuation of IUDs within the first 6 months.

STUDY DESIGN

A retrospective cohort analysis was conducted among 306 family planning patients who had a CuT380A IUD inserted from November 2008-August 2011. Rates of continuation among 283 users were calculated using survival analyses, and predictors of removal within 6 months of insertion were assessed using logistic regression.

RESULTS

Among 306 IUD insertions, 13 (4.2%) full or partial expulsions occurred within the first 6 months: 9 (10.7%) among nulliparous and 4 (2.0%) among parous women (chi-square, p<.001). In the first 6 months, four (1.3%) pregnancies occurred among women without prior removal or expulsion of the device (unadjusted Pearl Index: 2.61 per 100 woman-years at 6 months), all among parous women. Of 283 women in continuation analyses, 26% were under 20 years old and 29% nulliparous. Most (84%) received health education specific to IUDs before insertion. Overall, 11% had their IUD removed within 6 months of insertion. In an adjusted logistic regression model, women who did not receive health education were significantly more likely (Adjusted Odds Ratio=3.37, 95% confidence interval: 1.35-8.39) to have a removal within 6 months, but no significant association was found for age, race/ethnicity or parity.

CONCLUSION

Early discontinuation of IUDs was prevalent but lower among women who received method-specific health education.

Teen pregnancy prevention on a LARC: an update on long-acting reversible contraception for the primary care provider

PURPOSE OF REVIEW

This update will highlight recent research and recommendations on long-acting reversible contraception (LARC) in the teen population, in order to make primary care providers more comfortable counseling on these methods in the medical home. LARC methods, which include intrauterine devices (IUDs) and subdermal hormonal implants, are used by only a small minority of sexually active teens, despite their endorsement by professional organizations as effective and well tolerated birth control options in this population.

RECENT FINDINGS

Recent studies show a lack of knowledge about LARC methods among young women, as well as persistent misconceptions among providers regarding who is eligible for LARC use. Existing trials of small numbers of adolescents generally show enthusiasm for its use among teens who are educated about LARC, high satisfaction rates among users of subdermal implants and IUDs, as well as varying pregnancy and continuation rates.

SUMMARY

The existing research on LARC shows promise for these methods in the teen population. However, larger trials are needed to establish accurate data on satisfaction, continuation, and failure rates, as well as to explore other barriers to use. Medical home providers should stay informed of research on LARC in order to improve contraceptive counseling to young women.

Contraception in HIV-positive female adolescents

Sexual behavior of HIV-positive youths, whether infected perinatally, through risky behavior or other ways, is not substantially different from that of HIV-uninfected peers. Because of highly active antiretroviral therapy, increasing number of children, infected perinatally, are surviving into adolescence and are becoming sexually active and need reproductive health services. The objective of this article is to review the methods of contraception appropriate for HIV-positive adolescents with a special focus on hormonal contraceptives. Delaying the start of sexual life and the use of two methods thereafter, one of which is the male condom and the other a highly effective contraceptive method such as hormonal contraception or an intrauterine device, is currently the most effective option for those who desire simultaneous protection from both pregnancy and sexually transmitted diseases. Health care providers should be aware of the possible pharmacokinetic interactions between hormonal contraception and antiretrovirals. There is an urgent need for more information regarding metabolic outcomes of hormonal contraceptives, especially the effect of injectable progestins on bone metabolism, in HIV-positive adolescent girls.