Emergency contraception

Unplanned pregnancy and awareness of emergency contraception: a postpartum period survey

OBJECTIVES

The study aimed to determine the awareness of emergency contraception (EC) and knowledge of its use as well as the unplanned pregnancy rate among women in the immediate postpartum period in Ankara, Turkey's second largest city.

METHODS

Interviews were carried out among 1955 women on their first or second day postpartum. The interview was based on a questionnaire containing 19 questions covering participants' awareness and experience of using EC as well as their future approach to its use.

RESULTS

The rate of unplanned pregnancy was 18.2% and the rate of EC awareness was 26.0%; 89.4% of those who were aware of EC knew how to use it correctly. In the multivariate regression analysis, employment, household income and level of education were independently associated with EC awareness; gravidity, household income, level of education and number of abortions were independently associated with unplanned pregnancy. Awareness of EC increased significantly (p < .05) with age, household income and educational level; knowledge about the correct use of EC increased with age and educational level (p < .05).

CONCLUSION

EC awareness among the study population was low and was related to household income and educational level. Household income, educational level and gravidity were the most important factors associated with unplanned pregnancy. Governments must therefore establish appropriate health policies and provide contraceptive education to women from adolescence onwards.

The attitudes of Korean physicians toward emergency contraceptive pills: regarding women's access and rescheduling

OBJECTIVE

This study investigated the attitude of Korean physicians toward women's access to emergency contraceptive pills (ECPs) and the reclassification of ECP to a behind-the-counter (BTC) drug.

METHODS

This study involved 946 physicians who had prescribed ECP in South Korea. The written questionnaires were completed by obstetricians and gynecologists, family physicians, internal medicine doctors, and pediatricians.

RESULTS

Regarding the barriers limiting women's access to ECP, 24.8% of physicians responded that women lacked information about ECP and 22.5% felt that women were likely to be emotionally burdened by visits to clinics or hospitals to obtain ECP prescriptions. Ninety-two percent of physicians responded that ECP should remain a prescription drug while 6.1% stated preferences for a switch to a BTC drug. Physicians who opposed the switch were concerned about the potential abuse of ECP. In order to prevent ECP abuse, the most important factor to be considered was education on contraception.

CONCLUSION

A majority of Korean physicians opposed the reclassification of ECP to a BTC drug owing to their belief in increasing the role of educational initiatives about contraception and contraceptive practices before improving the access to ECP. This study is also of the opinion that contraceptive education for youth and adults in Korea should be more realistic and active, with an emphasis on regular contraception use before reclassification. Furthermore, we believe that efforts are needed to ensure accuracy of information on contraception to facilitate women's access to ECP.

Cola Beverages: Clinical Uses versus Adverse Effects

Methods:

In this systematic review we tried to explore these new uses for practitioners and also reemphasize on the most evidence-based complications of cola consumption like bone loss and metabolic and cardiovascular adverse effects in cases of misuse and overuse from both clinical and nutritional points of view via searching the PubMed database.

Results:

We chose 145 journal articles from the most relevant ones plus 30 extra references and categorized their topics in two classes of medical uses and adverse effects.

Conclusion:

It could be stated that cola beverages have demonstrated interesting uses and benefits in medicine but their use should be regulated as strict as possible.

Clinical Pharmacology of Hormonal Emergency Contraceptive Pills

Emergency contraceptives play a major role in preventing unwanted pregnancy. The use of emergency contraceptives is characterized by myths and lack of knowledge by both health professionals and users. The main objective of this paper is to summarize the clinical pharmacology of hormonal methods of emergency contraception. A literature review was done to describe in detail the mechanism of action, efficacy, pharmacokinetics, safety profile, and drug interactions of hormonal emergency contraceptive pills. This information is useful to healthcare professionals and users to fully understand how hormonal emergency contraceptive methods work.

Emergency Medicine Myths: Ectopic Pregnancy Evaluation, Risk Factors, and Presentation

BACKGROUND

Ectopic pregnancy (EP) is an important cause of morbidity and mortality in females of reproductive age. Proper diagnosis and treatment are critical, as complications such as rupture, hemorrhagic shock, and even death can occur.

OBJECTIVE

EP is a condition emergency physicians are trained to detect, yet there are multiple myths concerning its evaluation and diagnosis. This article reviews several of these myths in order to improve emergency department (ED) evaluation and diagnosis.

DISCUSSION

EP is a difficult diagnosis and may be missed on initial ED visit. While the diagnosis is often delayed simply due to very early presentations, it can also be missed because patients may not have all the same risk factors or demonstrate the same symptoms. They may also not demonstrate the same serum B-human chorionic gonadotropin levels and trends or have the same ultrasound findings at equivalent gestational ages. Some patients with early EP may have positive ultrasound findings with serum β-hCG levels under a defined discriminatory zone (DZ). On the other hand, some patients with an early viable intrauterine pregnancy may have no visible findings on initial ultrasound, but have serum β-hCG (quantitative) levels well above the DZ. Although rare, EP has even been demonstrated in women with negative urine β-hCG tests or low serum β-hCG levels.

CONCLUSIONS

While EP may be a challenging diagnosis, understanding the myths surrounding EP may help emergency physicians consider it, even when patient risk factors, symptoms, or ED laboratory or imaging studies do not initially or easily define the diagnosis.

The safety of available and emerging options for emergency contraception

INTRODUCTION

Emergency contraception (EC) is a way to significantly reduce the chance of becoming pregnant after an episode of unprotected intercourse. Considerable data support the safety of all available and emerging options for EC. Areas covered: This review presents a comprehensive summary of the literature regarding the safety of EC as well as directions for further study. PubMed was searched for all relevant studies published prior to June 2017. Expertopinion: All available methods of EC (i.e., ulipristal acetate pills, levonorgestrel pills, and the copper-IUD), carry only mild side effects and serious adverse events are essentially unknown. The copper IUD has the highest efficacy of EC methods. Given the excellent safety profiles of mifepristone and the levonorgestrel IUD, research is ongoing related to use of these products for EC.

Mechanism of Action of Ulipristal Acetate for Emergency Contraception: A Systematic Review

Ulipristal acetate (UPA) is now recommended as first choice hormonal emergency contraception (EC), due to its higher efficacy and similar safety compared to Levonorgestrel - EC. Even though all trials demonstrated that the first mechanism of action is inhibition of ovulation, some authors still postulate that a post fertilization effect is also possible, raising the alert on medication and fostering the ethical debate. A Medline database search was performed in order to find recent articles related to UPA's effects on ovulation, on fallopian tube and on endometrium. We also analyzed the effects on sperm function and pregnancy. All studies conclude that UPA is effective in inhibition of ovulation even when administered shortly before LH peak. The effects on fallopian tube are unclear: according to some authors UPA inhibits ciliar beat through an agonistic effect on progesterone receptors, according to others it antagonizes the progesterone-induced ciliar beat decrease. Concerning the action on endometrium and on embryo implantation most of the studies concluded that low dose UPA used for EC has no significant effect on the decrease of endometrial thickness and on embryo's attachment, but these results are still matter of debate. Finally recent evidence suggests that UPA modulates human sperm functions while it has no effect on established pregnancy. To date the majority of the evidence concurs in excluding a post-fertilization effect of UPA, even though more studies are needed to clarify its mechanism of action.

Association between knowledge about levonorgestrel emergency contraception and the risk of ectopic pregnancy following levonorgestrel emergency contraception failure: a comparative survey

Objective

To study the association between knowledge about levonorgestrel emergency contraception (LNG‐EC) and the risk of ectopic pregnancy (EP) following LNG‐EC failure.

Methods

This study included 600 women who had visited the hospital with LNG‐EC failure. Of these, 300 with EP and 300 with intrauterine pregnancy (IUP) were recruited to the EP group and IUP group respectively. The participants were interviewed face‐to‐face using a standardized questionnaire.

Main Outcome Measures

Pearson's chi‐square tests and t‐test were used to compare the sociodemographic characteristics, reproductive and gynecological history, surgical history, previous contraceptive experience, and answers to 10 questions concerning the knowledge about LNG‐EC.

Results

Those who gave incorrect answers to the question regarding the basic mechanism and specific method of levonorgestrel emergency contraceptive pills (LNG‐ECPs) were at a higher risk of EP after LNG‐EC failure. Women who did not strictly follow instructions or advice from healthcare professionals were more likely to subsequently experience EP (p < 10⁻⁴). Women with LNG‐EC failure reported friends/peers, TV, and Internet as the main sources of information. No difference was observed with regard to the sources of knowledge on LNG‐EC (p = 0.07).

Conclusions

The results illustrate the importance of strictly following the doctor's guidance or drug instructions when using LNG‐ECPs. The media should be used to disseminate information about responsible EC, and pharmacy staff should receive regular educational training sessions in this regard. © 2016 The Authors. Pharmacoepidemiology and Drug Safety published by John Wiley & Sons Ltd.

Translational In Vivo Models for Women's Health: The Nonhuman Primate Endometrium--A Predictive Model for Assessing Steroid Receptor Modulators

Macaques and baboons display physiological responses to steroid hormones that are similar to those of women. Herein, we describe various uses of nonhuman primates for preclinical studies on menstruation, endometriosis, and as a model system to evaluate reproductive therapies and contraceptives. Our goal is to outline the strengths of the nonhuman primate model for studies leading to improved therapies for women.

Novel contraceptive targets to inhibit ovulation: the prostaglandin E2 pathway

BACKGROUND

Prostaglandin E2 (PGE2) is an essential intrafollicular regulator of ovulation. In contrast with the one-gene, one-protein concept for synthesis of peptide signaling molecules, production and metabolism of bioactive PGE2 requires controlled expression of many proteins, correct subcellular localization of enzymes, coordinated PGE2 synthesis and metabolism, and prostaglandin transport in and out of cells to facilitate PGE2 action and degradation. Elevated intrafollicular PGE2 is required for successful ovulation, so disruption of PGE2 synthesis, metabolism or transport may yield effective contraceptive strategies.

METHODS

This review summarizes case reports and studies on ovulation inhibition in women and macaques treated with cyclooxygenase inhibitors published from 1987 to 2014. These findings are discussed in the context of studies describing levels of mRNA, protein, and activity of prostaglandin synthesis and metabolic enzymes as well as prostaglandin transporters in ovarian cells.

RESULTS

The ovulatory surge of LH regulates the expression of each component of the PGE2 synthesis-metabolism-transport pathway within the ovulatory follicle. Data from primary ovarian cells and cancer cell lines suggest that enzymes and transporters can cooperate to optimize bioactive PGE2 levels. Elevated intrafollicular PGE2 mediates key ovulatory events including cumulus expansion, follicle rupture and oocyte release. Inhibitors of the prostaglandin-endoperoxide synthase 2 (PTGS2) enzyme (also known as cyclooxygenase-2 or COX2) reduce ovulation rates in women. Studies in macaques show that PTGS2 inhibitors can reduce the rates of cumulus expansion, oocyte release, follicle rupture, oocyte nuclear maturation and fertilization. A PTGS2 inhibitor reduced pregnancy rates in breeding macaques when administered to simulate emergency contraception. However, PTGS2 inhibition did not prevent pregnancy in monkeys when administered to simulate monthly contraceptive use.

CONCLUSION

PTGS2 inhibitors alone may be suitable for use as emergency contraceptives. However, drugs of this class are unlikely to be effective as monthly contraceptives. Inhibitors of additional PGE2 synthesis enzymes or modulation of PGE2 metabolism or transport also hold potential for reducing follicular PGE2 and preventing ovulation. Approaches which target multiple components of the PGE2 synthesis-metabolism-transport pathway may be required to effectively block ovulation and lead to the development of novel contraceptive options for women. Therapies which target PGE2 may also impact disorders of the uterus and could also have benefits for women's health in addition to contraception.

Intrauterine devices and other forms of contraception: thinking outside the pack

A variety of contraception options are available in addition to traditional combined oral contraceptive pills. Newer long-acting reversible contraceptive (LARC) methods such as intrauterine devices and subcutaneous implants are preferred because they do not depend on patient compliance. They are highly effective and appropriate for most women. Female and male sterilization are other effective but they are irreversible and require counseling to minimize regret. The contraceptive injection, patch, and ring do not require daily administration, but their typical efficacy rates are lower than LARC methods and similar to those for combined oral contraceptive pills.

Reduced prevalence of chronic tubal inflammation in tubal pregnancies after levonorgestrel emergency contraception failure

PURPOSE

The aim of this study was to compare chronic fallopian tubal inflammatory disease and fibrosis between patients with general tubal pregnancy (TP) and TP with levonorgestrel (LNG) emergency contraception (EC) failure.

METHODS

We retrospectively studied patients with general TP (n = 79) and TP following LNG-EC failure (n = 81) within the same conception cycle. Information on the gynecological features of each subject was collected. Pelvic inflammatory disease and associated sequelae were assessed by the serum Chlamydia trachomatis (CT) IgG test, laparoscopic evaluation of tubal damage, and histopathological observation of tube tissues. Chi-square and Student's t-tests were employed to determine the difference between the two groups.

RESULTS

Compared with general TP, cases of TP following LNG-EC failure subjects were less likely to have a history of previous ectopic pregnancy (5.06% vs. 18.52%, p = 0.009) and adnexal surgery (6.33% vs. 22.22%, p = 0.010). Patients with TP following LNG-EC failure were less likely to have pelvic inflammatory disease and associated sequelae than those with general TP, as revealed by positive reaction to anti-CT IgG (18.18% vs. 35.94%, p = 0.031), assessment of tubal damage (grade I: 5.06% vs. 17.28%; grade II: 2.53% vs. 11.11%; grade III: 1.27% vs. 6.17%; p = 0.001), infiltration of chronic inflammatory cells (10.91% vs. 62.50%, p < 0.001), and positive Masson's staining (7.69% vs. 39.58%; p < 0.001).

CONCLUSIONS

Compared with cases of general TP, cases of TP following LNG-EC failure exhibited reduced rates of CT infection, fallopian tubal inflammation, and/or fibrosis.

Association between levonorgestrel emergency contraception and the risk of ectopic pregnancy: a multicenter case-control study

Cases of ectopic pregnancy (EP) following levonorgestrel emergency contraception (LNG-EC) failure have been reported continuously, but whether there is an association between EP risk and LNG-EC is unclear. We concluded a case-control study to explore this association by recruiting 2,411 EP patients as case group, and 2,416 women with intrauterine pregnancy and 2,419 non-pregnant women as control groups. Odds ratios (ORs) and their 95% confidential intervals (CIs) were calculated and adjusted for potential confounding factors. Previous use of LNG-EC was not correlated with the EP. Compared to women who did not use contraceptives, current use of LNG-EC reduced the risk for intrauterine pregnancy (Adjusted OR [AOR] = 0.20, 95%CI: 0.14-0.27), but did not increase the risk for EP (AOR2 = 1.04, 95%CI: 0.76-1.42). Furthermore, compared to women who did not have further act of intercourse, women with unprotected further act of intercourse were at a higher risk of EP (AOR1 = 2.35, 95%CI: 1.17-4.71), and women with repeated use of LNG-EC for further intercourse during the same cycle was also associated with a higher risk for EP (AOR1 = 3.08, 95%CI: 1.09-8.71; AOR2 = 2.49, 95%CI: 1.00-6.19). A better understanding of the risk of EP following LNG-EC failure can optimize LNG-EC use and thus reduce the risk of EP.

Contraceptive Use and the Risk of Ectopic Pregnancy: A Multi-Center Case-Control Study

Objective

To evaluate the association between the risk of ectopic pregnancy (EP) and the use of common contraceptives during the previous and current conception/menstrual cycle.

Methods

A multi-center case-control study was conducted in Shanghai. Women diagnosed with EP were recruited as the case group (n = 2,411). Women with intrauterine pregnancy (IUP) (n = 2,416) and non-pregnant women (n = 2,419) were matched as controls at a ratio of 1∶1. Information regarding the previous and current use of contraceptives was collected. Multivariate logistic regression analyses were performed to calculate odds ratios (ORs) and the corresponding 95% confidential intervals (CIs).

Results

Previous use of intrauterine devices (IUDs) was associated with a slight risk of ectopic pregnancy (AOR₁ = 1.87 [95% CI: 1.48–2.37]; AOR₂ = 1.84 [1.49–2.27]), and the risk increased with the duration of previous use (P₁ for trend <10⁻⁴, P₂ for trend <10⁻⁴). The current use of most contraceptives reduced the risk of both unwanted IUP (condom: AOR = 0.04 [0.03–0.05]; withdrawal method: AOR = 0.10 [0.07–0.13]; calendar rhythm method: AOR = 0.54 [0.40–0.73]; oral contraceptive pills [OCPs]: AOR = 0.03 [0.02–0.08]; levonorgestrel emergency contraception [LNG-EC]: AOR = 0.22 [0.16–0.30]; IUDs: AOR = 0.01 [0.005–0.012]; tubal sterilization: AOR = 0.01 [0.001–0.022]) and unwanted EP (condom: AOR₁ = 0.05 [0.04–0.06]; withdrawal method: AOR₁ = 0.13 [0.09–0.19]; calendar rhythm method: AOR₁ = 0.66 [0.48–0.91]; OCPs: AOR₁ = 0.14 [0.07–0.26]; IUDs: AOR₁ = 0.17 [0.13–0.22]; tubal sterilization: AOR₁ = 0.04 [0.02–0.08]). However, when contraception failed and pregnancy occurred, current use of OCPs (AOR₂ = 4.06 [1.64–10.07]), LNG-EC (AOR₂ = 4.87 [3.88–6.10]), IUDs (AOR₂ = 21.08 [13.44–33.07]), and tubal sterilization (AOR₂ = 7.68 [1.69–34.80]) increased the risk of EP compared with the non-use of contraceptives.

Conclusion

Current use of most contraceptives reduce the risk of both IUP and EP. However, if the contraceptive method fails, the proportions of EP may be higher than those of non-users. In the case of contraceptive failure in the current cycle, EP cases should be differentiated according to current use of OCPs, LNG-EC, IUDs, and tubal sterilization. In addition, attention should be paid to women with previous long-term use of IUDs.

Selective progesterone receptor modulators: an update

INTRODUCTION

Several selective progesterone receptor modulators (SPRMs) show promise in several areas of medicine and this work has been summarized by us in 2008.

AREAS COVERED

Since the publication of our reviews, several developments have taken place in the field of reproductive medicine. The first is emergency contraception (EC). Two SPRMs are clinically utilized today: mifepristone (MFP) and ulipristal acetate (UPA). MFP is available for EC in up to 120 h following unprotected intercourse. A dose of 10 mg is significantly more effective than levonorgestrel (LNG). In a metanalysis of the use of UPA versus LNG up to 72 h after unprotected intercourse, failure rates of 1.4 versus 2.2% were reported. The second is contraception. A daily dose of 2 mg MFP can block ovulation and several MFP regimens are being tested, including a vaginal ring releasing MFP. The third is the preoperative administration in women harboring leiomyomas, where clinical testing of several SPRM has shown that they can decrease uterine leiomyomas' size and substantially reduce uterine bleeding. SPRM can induce unusual, specific endometrial appearances. Many believe that these changes should not cause concern, but the issue remains controversial.

EXPERT OPINION

SPRMs are very effective in EC and for the preoperative treatment of uterine leiomyomas.

Mifepristone: a potential clinical agent based on its anti-progesterone and anti-glucocorticoid properties

Nowadays, unwanted pregnancy is a major globe tragedy for millions of women, associated with significant direct and indirect costs, no matter for individuals or society. The progesterone receptor antagonist steroid, mifepristone has been widely and effectively using throughout the world for medical abortion, but to a lesser extent for emergency contraception. In this review, we hope to explore the role of mifepristone as a contraceptive, particularly for emergency contraception. Studies of mifepristone have also been expanding to the fields of endometriosis and uterine fibroids. Furthermore, this initially considered reproductive medicine has been investigated in some psychotic diseases and various disorders of hypercortisolism, because of its glucocorticoid receptor antagonism. Mifepristone was approved suitable for patients with hyperglycemia secondary to Cushing's syndrome by the United States Food and Drug Administration (FDA) in 2012. The aim of this article is to review published reports on the anti-progesterone and anti-glucocorticoid properties of mifepristone as a clinical agent. There is a new insight into systematically describing and evaluating the potential efficiency of mifepristone administrated in the field of endocrine and neuroendocrine, not only in obstetrics and gynecology.

Use of and attitudes towards emergency contraception: a survey of women in five European countries

OBJECTIVE

To identify knowledge of and attitudes towards emergency contraception (EC) in women from five European countries.

METHODS

In an internet-based survey, sexually active women aged 16 to 46 years from France, Germany, Italy, Spain, and the UK were asked about their use of and opinions on EC.

RESULTS

Overall, 7170 women completed the survey. Thirty percent reported having had unprotected sexual intercourse during the previous 12 months (population at risk). Twenty-four percent of the population at-risk reported using EC. The most common reasons given for not using EC were: not perceiving themselves to be at risk of pregnancy; and not thinking about EC as an option. A third of respondents indicated they did not know how EC works, with several misconceptions about EC noted e.g., leading to infertility, similar to abortion. Seventy-nine percent of women agreed that EC is a responsible choice to prevent unwanted pregnancy, but nearly a third of women who used EC felt uncomfortable or judged when obtaining it.

CONCLUSIONS

EC is underutilised by three-quarters of the women surveyed. Women do not recognise they may be at risk of pregnancy when contraception fails. There are still several misbeliefs about EC indicating a need for better education of the public.