One-year continuation of copper or levonorgestrel intrauterine devices initiated at the time of emergency contraception

ZB-06, a vaginal film containing an engineered human contraceptive antibody (HC4-N), demonstrates safety and efficacy in a phase 1 postcoital test and safety study

BACKGROUND

With an unplanned pregnancy rate of 50% or more in many countries, there is an urgent need for contraceptives that are more accessible and acceptable. To meet the growing demand for new contraceptives, ZabBio developed ZB-06, a vaginal film containing HC4-N, a human contraceptive antibody that inactivates sperm.

OBJECTIVE

This study aimed to assess the potential contraceptive activity of the ZB-06 film using a surrogate assessment for contraceptive efficacy, the postcoital test. We also assessed clinical safety of film use among healthy heterosexual couples. Serum, cervical mucus, and vaginal fluid HC4-N antibody concentrations and sperm agglutination potency were determined after single film use. Changes in the concentration of soluble proinflammatory cytokines and vaginal Nugent score after film use were measured as subclinical safety endpoints.

STUDY DESIGN

This was a phase 1, first-in-woman, open-label, proof-of-concept, postcoital test and safety study.

RESULTS

A total of 20 healthy women were enrolled in the study, and 8 heterosexual couples completed all study visits. The product was safe for both female participants and their male sexual partners. The postcoital test performed on ovulatory cervical mucus at baseline (no product use) revealed a mean of 25.9 (±30.6) progressively motile sperm per high-power field. After use of a single ZB-06 film before intercourse, this number dropped to 0.04 (±0.06) progressively motile sperm per high-power field (P<.0001). At the follow-up postcoital test visit approximately 1 month later (no product use), a mean of 47.4 (±37.4) progressively motile sperm per high-power field was observed, indicating contraceptive reversibility.

CONCLUSION

A single dose of the ZB-06 film applied before intercourse was safe and met efficacy surrogate benchmarks of excluding progressively motile sperm from ovulatory cervical mucus. These data indicate that ZB-06 is a viable contraceptive candidate warranting further development and testing.

One-year pregnancy and continuation rates after placement of levonorgestrel or copper intrauterine devices for emergency contraception: a randomized controlled trial

BACKGROUND

Recent evidence demonstrates the effectiveness of the levonorgestrel 52-mg intrauterine device for emergency contraception vs the copper T380A intrauterine device. Of note, 1-year pregnancy and continuation rates after intrauterine device placement for emergency contraception remain understudied.

OBJECTIVE

This study compared 1-year pregnancy and intrauterine device continuation rates and reasons for discontinuation among emergency contraception users randomized to the levonorgestrel 52-mg intrauterine device or the copper intrauterine device.

STUDY DESIGN

This participant-masked, randomized noninferiority trial recruited emergency contraception individuals desiring an intrauterine device from 6 Utah family planning clinics between August 2016 and December 2019. Participants were randomized 1:1 to the levonorgestrel 52-mg intrauterine device group or the copper T380A intrauterine device group. Treatment allocation was revealed to participants at the 1-month follow-up. Trained personnel followed up the participants by phone, text, or e-mail at 5 time points in 1 year and reviewed electronic health records for pregnancy and intrauterine device continuation outcomes for both confirmation and nonresponders. We assessed the reasons for the discontinuation and used Cox proportional-hazard models, Kaplan-Meier estimates, and log-rank tests to assess differences in the continuation and pregnancy rates between the groups.

RESULTS

The levonorgestrel and copper intrauterine device groups included 327 and 328 participants, respectively, receiving the respective interventions. By intention-to-treat analysis at 1 year, the pregnancy rates were similar between intrauterine device types (2.8% [9/327] in levonorgestrel 52-mg intrauterine device vs 3.0% [10/328] in copper intrauterine device; risk ratio, 0.9; 95% confidence interval, 0.4-2.2; P=.82). Most pregnancies occurred in participants after intrauterine device removal, with only 1 device failure in each group. Of note, 1-year continuation rates did not differ between groups with 204 of 327 levonorgestrel 52-mg intrauterine device users (62.4%) and 183 of 328 copper T380A intrauterine device users (55.8%) continuing intrauterine device use at 1 year (risk ratio, 1.1; 95% confidence interval, 1.0-1.2; P=.09). There were differences concerning the reasons for discontinuation between intrauterine device types, with more bleeding and cramping cited among copper intrauterine device users.

CONCLUSION

The pregnancy rates were low and similar between intrauterine device types. Of note, 6 of 10 intrauterine device emergency contraception users continued use at 1 year. Moreover, 1-year continuation rates were similar between intrauterine device types.

Exploring the Role of Levonorgestrel Intrauterine System (LNG-IUS) as a Method of Emergency Contraception (EC)

Copper T 380-A (CuT380A) intrauterine device (IUD) has been an effective method of emergency contraception (EC). Levonorgestrel intrauterine system (LNG-IUS) has not been approved by the Food and Drug Association for EC till now. There are few studies that provide data regarding the efficacy of LNG-IUS as EC. This systematic review tried to explore the efficacy of LNG-IUS in preventing accidental pregnancies up to five days of unprotected intercourse. A systematic review of the published studies on the use of LNG-IUS as EC was done. All randomized trials, prospective cohorts, retrospective cohorts. and case-control study designs pertaining to this topic were included in this review. Abstracts were retrieved and reviewed by two authors independently. Variables pertaining to socio-demographic parameters, EC use-related variables (reason for use, frequency, time elapsed since coitus), and those associated with sexual habits were selected and recorded. A total of six articles were rendered for the review. High school students and those attending college accounted for 36.8%-51.8% of the study population. Data on the reason for seeking EC showed noncompliance to routine contraception as the most common reason, followed by failure of withdrawal method, breach of barrier contraception, and unplanned intercourse. With a negligible failure rate, LNG-IUS seemed to be a good alternative to the existing copper EC. Considering the plethora of noncontraceptive benefits associated, LNG-IUS can be safely provided as an option of EC in the cafeteria approach within five days of unprotected intercourse.

Continuation of post-coital intrauterine contraceptive devices beyond index cycle at Sexual Health Sheffield

We aimed to observe the continuation of Emergency IUD beyond the index cycle and reasons for removal. We analysed data from the patients' electronic records of fifty consecutive women who had an IUD fitted at Sexual Health Sheffield for emergency contraception. 48 (96%) women continued with the IUD beyond the index cycle and 31 (62%) women for more than 1 year. Heavy menstrual bleeding, dysmenorrhoea and pain were the most frequent reasons cited for removal.

The Fine Line Between Informing and Coercing: Community Health Center Clinicians' Approaches to Counseling Young People About IUDs

CONTEXT

While community health centers (CHCs) are meeting increased demand for contraceptives, little is known about contraceptive counseling in these settings. Understanding how clinicians counsel about IUDs in CHCs, including whether they address or disregard young people's preferences and concerns during counseling, could improve contraceptive care.

METHODS

As part of a training program, 20 clinicians from 11 San Francisco Bay Area CHC sites who counsel young people about contraception were interviewed by telephone in 2015 regarding their IUD counseling approaches. An iterative grounded theory approach was used to analyze interview transcripts and identify salient themes related to clinicians' contraceptive counseling, IUD removal practices and efforts to address patient concerns regarding side effects.

RESULTS

Most clinicians offered comprehensive contraceptive counseling and method choice. While several clinicians viewed counseling as an opportunity to empower their patients to make contraceptive decisions without pressure, they also described a tension between guiding young people toward higher-efficacy methods and respecting patients' choices. Many clinicians engaged in what could be considered coercive practices by trying to dissuade patients from removals within a year of placement and offering to treat or downplay side effects.

CONCLUSIONS

Providers try to promote their young patients' autonomous decision making, but their support for high-efficacy methods can result in coercive practices. More training is needed to ensure that providers employ patient-centered counseling approaches, including honoring patient requests for removals.

The efficacy of intrauterine devices for emergency contraception and beyond: a systematic review update

Background

The copper intrauterine device (IUD) is a very effective form of emergency contraception. The failure rate is about 0.1%. IUDs are also very cost-effective when used as long acting-reversible contraception (LARC). The purpose of this review is to attempt to confirm these findings.

Methods

The references for this study were generated by entering the terms “intrauterine device” and “emergency contraception” in Medline, PubMed, Popline, Global Health and ClinicalTrials.gov. Chinese references were obtained from the Wanfang database. For the emergency contraception study, articles with a defined population who were followed up until outcome were eligible. Women who were adequately followed for at least 6 months were included in the long term arm of the study.

Results

There were 18 (of 228) studies which met our selection criteria and were conducted in five countries, between August 2011 and January 2018. There were 1720 insertions of seven types of copper IUD with a failure rate of 0.12%. The maximum time from intercourse to IUD insertion was 14 days. The discontinuation rate at 12 months was over 20% in the long term studies.

Conclusion

There are now a combined total of 8550 reported insertions from two reviews with 8 pregnancies and a failure rate of 0.093%. Copper IUDs remain an effective form of emergency contraception, for which they are under-promoted. The major limitation of the studies is the lack of data relating unprotected intercourse to the day of the cycle.

A survey of young women's perceptions of the influence of the Levonorgestrel-Intrauterine System or copper-intrauterine device on sexual desire

OBJECTIVES

Few studies, with contradictory results, evaluate intrauterine contraceptives (IUC) and sexual function specifically. This study compares perception of sexual desire related to IUC use and aspects of sexual function in women who use the Lng-IUS with those using the Cu-IUD.

STUDY DESIGN

A secondary analysis regarding IUC use based on a larger cross-sectional survey of contraceptive use in Sweden, conducted in 2013. In total, 153 IUC users (103 Cu-IUD and 50 Lng-IUS users) answered the questionnaire. The only inclusion criterion was intrauterine contraceptive use.

MAIN OUTCOME MEASURES

Were self-reported sexual desire changes related to contraceptive method. We also analysed aspects of sexual functioning; sexual desire level, sexual activity, orgasm frequency, satisfaction with sex life and satisfaction of desire level.

RESULTS

A negative effect on sexual desire due to contraceptive method was reported by 28% of the Lng-IUS users and by 10.1% of the Cu-IUD users (p < 0.05). Results were more marked after adjusting for age, body mass index, depression, parity, switching behaviour, and partnership (OR 5.0; CI: 1.8-13.8). The adjusted odds of reporting low sexual desire level (never or almost never feeling sexual desire) (OR 3.5; CI: 1.1-11.2) as well as low satisfaction with sex life (OR 2.7; CI: 1.2-6.3) was higher in the Lng-IUS group (adjusted for same confounders as above).

CONCLUSIONS

The women in this study using the Lng-IUS more often report negative sexual desire effects of their contraception as well as lower sexual desire level compared with women using the Cu-IUD.

Video counseling about emergency contraception: an observational study

OBJECTIVE

This study assesses emergency contraception (EC) dispensed before and after a 3-min video counseling intervention on EC.

METHODS

We used a quasi-experimental design and two data sources to assess the impact of offering the video counseling intervention. We used electronic health records from six Planned Parenthood Association of Utah health centers with onsite oral EC dispensing to determine pre- and postintervention EC distribution. Beginning July 2015, three participating locations offered the video counseling intervention to English-speaking EC clients. These clients completed a brief survey assessing EC knowledge and uptake, providing a patient-level data source. We used a difference-in-difference analysis of the clinic-level data to assess the effect of the video counseling intervention. This analysis compares the variation in oral EC distribution between clinics offering the video intervention and clinics not offering the video counseling before and after the video counseling was introduced. Multivariable logistic regression assessed client characteristics associated with receiving ulipristal.

RESULTS

The six health centers served 8269 English-language EC clients during 2015. At participating sites, provision of ulipristal increased from 12% (269/2315) preintervention to 28% (627/2266) postintervention (p<.001). Nonparticipating sites did not see a change. Clients seeking EC at sites offering video counseling were more likely to receive ulipristal even after controlling for age, insurance and ethnicity (adjusted OR 3.4, 95% CI 3.0-3.9). Using the difference-in-difference analysis, the video counseling intervention accounted for an 18% (95% CI 14%-21%) increase in ulipristal provision at the participating health centers. Among the 2266 women seeking EC who were offered video counseling, 19% (425/2266) watched the video, and 60% (254/425) reported the video affected their EC preferences. Knowledge of the IUD for EC increased, but reported uptake of this method remained low (6.8%).

CONCLUSIONS

Exposure to video counseling increased use of more effective oral EC and increased knowledge about all EC options.

IMPLICATIONS

Use of a brief informational video about EC options at family planning clinics may increase the proportion of EC clients receiving more effective EC methods.

A Decision Analysis Model of 1-Year Effectiveness of Intended Postplacental Compared With Intended Delayed Postpartum Intrauterine Device Insertion

OBJECTIVE

To compare, using decision analysis methodology, the 1-year probability of pregnancy after intended postplacental intrauterine device (IUD) insertion with intended delayed insertion at an outpatient postpartum visit (delayed postpartum placement).

METHODS

We developed an evidence-based decision model with the primary outcome of 1-year probability of pregnancy. We compared 1-year probability of pregnancy after intended postplacental or intended delayed postpartum IUD placement. We obtained estimates from the literature for the proportions of the following: mode of delivery, successful IUD placement, IUD type, postpartum visit attendance, IUD expulsion, IUD discontinuation, and contraceptive use, choice, and efficacy after IUD discontinuation. We performed sensitivity analyses and a Monte Carlo simulation to account for variations in proportion estimates.

RESULTS

One-year probabilities of pregnancy among a theoretical cohort of 2,500,000 women intending to receive a postplacental IUD after vaginal birth and 1,250,000 women intending to receive a postplacental IUD after cesarean birth were 17.3% and 11.2%, respectively; the 1-year probability of pregnancy among a theoretical cohort of 2,500,000 women intending to receive a delayed postpartum IUD was 24.6%. For delayed postpartum IUD placement to have effectiveness equal to postplacental placement, 91.4% of women delivering vaginally and 99.7% of women delivering by cesarean would need to attend postpartum care. Once placed, the effectiveness of postplacental IUDs was lower than that of delayed postpartum IUDs: 1-year probabilities of pregnancy after IUD placement at a vaginal birth, cesarean birth, and an outpatient postpartum visit were 15.4%, 6.6%, and 3.9%, respectively.

CONCLUSION

After accounting for factors that affect successful IUD placement and retention, this decision model indicates that intended postplacental IUD insertion results in a lower 1-year probability of pregnancy as compared with intended delayed postpartum IUD insertion.

The Management of a patient with a fragmented intrauterine device embedded within the cervical canal

A 28-year-old woman presented with a malpositioned intrauterine device (IUD) that was fragmented and significantly entrenched within the cervical canal and myometrium. IUD malposition with concomitant device fragmentation and embedded segments, albeit rare, should be a consideration given the device's prevalence.

Cost-effectiveness of emergency contraception options over 1 year

BACKGROUND

The copper intrauterine device is the most effective form of emergency contraception and can also provide long-term contraception. The levonorgestrel intrauterine device has also been studied in combination with oral levonorgestrel for women seeking emergency contraception. However, intrauterine devices have higher up-front costs than oral methods, such as ulipristal acetate and levonorgestrel. Health care payers and decision makers (eg, health care insurers, government programs) with financial constraints must determine if the increased effectiveness of intrauterine device emergency contraception methods are worth the additional costs.

OBJECTIVE

We sought to compare the cost-effectiveness of 4 emergency contraception strategies-ulipristal acetate, oral levonorgestrel, copper intrauterine device, and oral levonorgestrel plus same-day levonorgestrel intrauterine device-over 1 year from a US payer perspective.

STUDY DESIGN

Costs (2017 US dollars) and pregnancies were estimated over 1 year using a Markov model of 1000 women seeking emergency contraception. Every 28-day cycle, the model estimated the predicted number of pregnancy outcomes (ie, live birth, ectopic pregnancy, spontaneous abortion, or induced abortion) resulting from emergency contraception failure and subsequent contraception use. Model inputs were derived from published literature and national sources. An emergency contraception strategy was considered cost-effective if the incremental cost-effectiveness ratio (ie, the cost to prevent 1 additional pregnancy) was less than the weighted average cost of pregnancy outcomes in the United States ($5167). The incremental cost-effectiveness ratios and probability of being the most cost-effective emergency contraception strategy were calculated from 1000 probabilistic model iterations. One-way sensitivity analyses were used to examine uncertainty in the cost of emergency contraception, subsequent contraception, and pregnancy outcomes as well as the model probabilities.

RESULTS

In 1000 women seeking emergency contraception, the model estimated direct medical costs of $1,228,000 and 137 unintended pregnancies with ulipristal acetate, compared to $1,279,000 and 150 unintended pregnancies with oral levonorgestrel, $1,376,000 and 61 unintended pregnancies with copper intrauterine devices, and $1,558,000 and 63 unintended pregnancies with oral levonorgestrel plus same-day levonorgestrel intrauterine device. The copper intrauterine device was the most cost-effective emergency contraception strategy in the majority (63.9%) of model iterations and, compared to ulipristal acetate, cost $1957 per additional pregnancy prevented. Model estimates were most sensitive to changes in the cost of the copper intrauterine device (with higher copper intrauterine device costs, oral levonorgestrel plus same-day levonorgestrel intrauterine device became the most cost-effective option) and the cost of a live birth (with lower-cost births, ulipristal acetate became the most cost-effective option). When the proportion of obese women in the population increased, the copper intrauterine device became even more most cost-effective.

CONCLUSION

Over 1 year, the copper intrauterine device is currently the most cost-effective emergency contraception option. Policy makers and health care insurance companies should consider the potential for long-term savings when women seeking emergency contraception can promptly obtain whatever contraceptive best meets their personal preferences and needs; this will require removing barriers and promoting access to intrauterine devices at emergency contraception visits.

The intrauterine device as emergency contraception: how much do young women know?

BACKGROUND

Unprotected intercourse is common, especially among teens and young women. Access to intrauterine device (IUD) as emergency contraception (EC) can help interested patients more effectively prevent unintended pregnancy and can also offer ongoing contraception. This study evaluated young women's awareness of IUD as EC and interest in case of need.

STUDY DESIGN

We conducted a secondary analysis of data from young women aged 18-25 years, not desiring pregnancy within 12 months, and receiving contraceptive counseling within a cluster-randomized trial in 40 US Planned Parenthood health centers in 2011-2013 (n=1500). Heath centers were randomized to receive enhanced training on contraceptive counseling and IUD placement, or to provide standard care. The intervention did not focus specifically on IUD as EC. We assessed awareness of IUD as EC, desire to learn more about EC and most trusted source of information of EC among women in both intervention and control groups completing baseline and 3- or 6-month follow-up questionnaires (n=1138).

RESULTS

At follow-up, very few young women overall (7.5%) visiting health centers had heard of IUD as EC. However, if they needed EC, most (68%) reported that they would want to learn about IUDs in addition to EC pills, especially those who would be very unhappy to become pregnant (adjusted odds ratio [aOR], 1.3; 95% confidence interval, 1.0-1.6, p<.05). Most (91%) reported a doctor or nurse as their most trusted source of EC information, over Internet (6%) or friends (2%), highlighting providers' essential role.

CONCLUSION

Most young women at risk of unintended pregnancy are not aware of IUD as EC and look to their providers for trusted information. Contraceptive education should explicitly address IUD as EC.

IMPLICATIONS

Few young women know that the IUD can be used for EC or about its effectiveness. However, if they needed EC, most reported that they would want to learn about IUDs in addition to EC pills, especially those very unhappy to become pregnant. Contraceptive education should explicitly address IUD as EC.