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Lőczi LL, Török M, Vezér M, Gerszi D, Gyarmathy VA, Ács N, Várbíró S, Keszthelyi M. Motivators for emergency contraception: Previous pregnancy and condom rupture. Heliyon 2024; 10:e23757. [PMID: 38192856 PMCID: PMC10772218 DOI: 10.1016/j.heliyon.2023.e23757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/02/2023] [Accepted: 12/12/2023] [Indexed: 01/10/2024] Open
Abstract
Objectives Little is known about the motivations to apply for emergency contraception (EC). Our first aim was to explore the motivating circumstances to use EC as fast as possible. Our second aim was to explore the contraceptive method of the population seeking EC. Study design This present retrospective observational study between July 2021 and September 2021 is embedded in the MEEC (Motivation and Epidemiology of Emergency Contraceptive Pill) based on the study cohort of a Hungarian data bank containing follow-up data of 455 women applied for EC telemedicine consultation. Variables assessed were: age, gynecological history (pregnancies, abortions, miscarriages), data of the intercourse (elapsed time, contraceptive method), and data of the menstrual cycle, and relationship status. Results Of all patients, 59.3 % reported condom rupture, 29.5 % no protection, and 11.2 % other. Patients using condom applied for EC significantly sooner than those using no protection and using other protective methods. A significantly shorter elapsed time was observed in patients with a history of a previous pregnancy. No significant relationship was seen between the way of protection, previous pregnancies, and surprisingly the time of ovulation despite the obvious intention of avoiding pregnancy. Conclusions This is the first study to examine the potential role of epidemiologic factors as motivators for EC on the basis of a large patient cohort. Our study demonstrates the significant role of condom rupture/use and the history of previous pregnancies to be the strongest motivators for EC.
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Affiliation(s)
- Lotti Lúcia Lőczi
- Department of Obstetrics and Gynecology, Semmelweis University, Üllői út 78/a, 1082, Budapest, Hungary
| | - Marianna Török
- Department of Obstetrics and Gynecology, Semmelweis University, Üllői út 78/a, 1082, Budapest, Hungary
- Workgroup for Science Management Doctoral School, Semmelweis University, Üllői út 22., 1085, Budapest, Hungary
| | - Márton Vezér
- Department of Obstetrics and Gynecology, Semmelweis University, Üllői út 78/a, 1082, Budapest, Hungary
| | - Dóra Gerszi
- Department of Obstetrics and Gynecology, Semmelweis University, Üllői út 78/a, 1082, Budapest, Hungary
| | - V. Anna Gyarmathy
- EpiConsult LLC, 8 The Green, STE A, Dover, DE, 19904, USA
- Johns Hopkins Bloomberg School of Public Health, Baltimore, 615 N Wolfe St, Baltimore, MD, 21205, USA
| | - Nándor Ács
- Department of Obstetrics and Gynecology, Semmelweis University, Üllői út 78/a, 1082, Budapest, Hungary
| | - Szabolcs Várbíró
- Department of Obstetrics and Gynecology, Semmelweis University, Üllői út 78/a, 1082, Budapest, Hungary
- Workgroup for Science Management Doctoral School, Semmelweis University, Üllői út 22., 1085, Budapest, Hungary
| | - Márton Keszthelyi
- Department of Obstetrics and Gynecology, Semmelweis University, Üllői út 78/a, 1082, Budapest, Hungary
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Scendoni R, Cingolani M, Cembriani F, Fedeli P, Tambone V, Terranova C, De Micco F. Over-the-counter emergency contraception in Italy: ethical reflections and medico-legal issues. Front Glob Womens Health 2023; 4:1205208. [PMID: 37790088 PMCID: PMC10544570 DOI: 10.3389/fgwh.2023.1205208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 09/06/2023] [Indexed: 10/05/2023] Open
Abstract
Although more than ten years have passed since the marketing of Ulipristal acetate in Europe, emergency contraception remains a complex issue with many scientific, legal, ethical and social implications. The topic is an example of the differences that can exist between scientific evidence, the certainties on which law is based, and social implications. This paper shows the incompleteness of the scientific reconstruction on the effects of emergency hormonal contraceptives and the dangerousness of the decision to alienate the supply of over-the-counter drugs from the general rules of health care. This report shows the incompleteness of the scientific reconstruction on the effects of emergency hormonal contraceptives and the dangerousness of the decision to alienate the supply of over-the-counter drugs from the general rules of health care. Various ethical and medico-legal issues will be addressed, also focusing attention on underage women whose sexual and reproductive health requires not abandoning them, but actually taking charge of them without medicalizing their choices.
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Affiliation(s)
- Roberto Scendoni
- Department of Law, Institute of Legal Medicine, University of Macerata, Macerata, Italy
| | - Mariano Cingolani
- Department of Law, Institute of Legal Medicine, University of Macerata, Macerata, Italy
| | - Fabio Cembriani
- Operative Unit of Legal Medicine, Provincial Authority for Health Services of Trento, Trento, Italy
| | | | - Vittoradolfo Tambone
- Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
- Research Unit of Bioethics and Humanities, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Roma, Italy
| | - Corrado Terranova
- Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
- Research Unit of Gynaecology, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Roma, Italy
| | - Francesco De Micco
- Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
- Research Unit of Bioethics and Humanities, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Roma, Italy
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3
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Li RHW, Lo SST, Gemzell-Danielsson K, Fong CHY, Ho PC, Ng EHY. Oral emergency contraception with levonorgestrel plus piroxicam: a randomised double-blind placebo-controlled trial. Lancet 2023; 402:851-858. [PMID: 37597523 DOI: 10.1016/s0140-6736(23)01240-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 05/22/2023] [Accepted: 06/13/2023] [Indexed: 08/21/2023]
Abstract
BACKGROUND Levonorgestrel, a standard drug for emergency contraception (EC), is not effective if administered post-ovulation. A cyclo-oxygenase inhibitor could contribute synergistic effects. We investigated whether a single 40 mg oral dose of piroxicam as co-treatment with levonorgestrel improved emergency contraceptive efficacy. METHODS This was a randomised double-blind placebo-controlled trial carried out in a major community sexual and reproductive health service in Hong Kong. Women who required levonorgestrel EC within 72 h of unprotected sexual intercourse were recruited and block-randomised in a 1:1 ratio to receive a single supervised dose of levonorgestrel 1·5 mg plus either piroxicam 40 mg or placebo orally. Group assignment was concealed in opaque envelopes and masked to the women, clinicians, and investigators. At follow-up 1-2 weeks after the next expected period, the pregnancy status was noted by history or pregnancy test. The primary efficacy outcome was the proportion of pregnancies prevented out of those expected based on an established model. All women randomised to receive the study drug and who completed the follow-up were analysed. The trial was registered with ClinicalTrials.gov, NCT03614494. FINDINGS 860 women (430 in each group) were recruited between Aug 20, 2018, and Aug 30, 2022. One (0·2%) of 418 efficacy-eligible women in the piroxicam group were pregnant, compared with seven (1·7%) of 418 in the placebo group (odds ratio 0·20 [95% CI 0·02-0·91]; p=0·036). Levonorgestrel plus piroxicam prevented 94·7% of expected pregnancies compared with 63·4% for levonorgestrel plus placebo. We noted no significant difference between the two groups in the proportion of women with advancement or delay of their next period, or in the adverse event profile. INTERPRETATION Oral piroxicam 40 mg co-administered with levonorgestrel improved efficacy of EC in our study. Piroxicam co-administration could be considered clinically where levonorgestrel EC is the option of choice. FUNDING None.
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Affiliation(s)
- Raymond Hang Wun Li
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China; The Family Planning Association of Hong Kong, Hong Kong Special Administrative Region, China.
| | - Sue Seen Tsing Lo
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China; The Family Planning Association of Hong Kong, Hong Kong Special Administrative Region, China
| | - Kristina Gemzell-Danielsson
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China; Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Carol Ho Yi Fong
- Department of Medicine, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Pak Chung Ho
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China; The Family Planning Association of Hong Kong, Hong Kong Special Administrative Region, China
| | - Ernest Hung Yu Ng
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China; The Family Planning Association of Hong Kong, Hong Kong Special Administrative Region, China
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Emergency Contraception: Access and Challenges at Times of Uncertainty. Am J Ther 2022; 29:e553-e567. [PMID: 35998109 DOI: 10.1097/mjt.0000000000001560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The UN Commission on Life-Saving Commodities for Women's and Children's Health identified emergency contraceptive pills as 1 of the 13 essential underused, low-cost, and high-impact commodities that could save the lives of millions of women and children worldwide. In the US, 2 emergency contraceptive regimens are currently approved, and their most plausible mechanism of action involves delaying and/or inhibiting ovulation. AREAS OF UNCERTAINTY Abortion and contraception are recognized as essential components of reproductive health care. In the US, in the wake of the Dobbs v. Jackson Women's Health Organization Supreme Court decision on June 24, 2022, 26 states began to or are expected to severely restrict abortion. It is anticipated that these restrictions will increase the demand for emergency contraception (EC). Several obstacles to EC access have been described, and these include cost, hurdles to over-the-counter purchase, low awareness, myths about their mechanisms of action, widespread misinformation, and barriers that special populations face in accessing them. The politicization of EC is a major factor limiting access. Improving sex education and health literacy, along with eHealth literacy, are important initiatives to improve EC uptake and access. DATA SOURCES PubMed, The Guttmacher Institute, Society of Family Planning, American College of Obstetrician and Gynecologists, the World Health Organization, The United Nations. THERAPEUTIC ADVANCES A randomized noninferiority trial showed that the 52 mg levonorgestrel intrauterine device was noninferior to the copper intrauterine device when used as an EC method in the first 5 days after unprotected intercourse. This is a promising and highly effective emergency contraceptive option, particularly for overweight and obese patients, and a contraceptive option with a different bleeding profile than the copper intrauterine device. CONCLUSIONS EC represents an important facet of medicine and public health. The 2 medical regimens currently approved in the US are very effective, have virtually no medical contraindications, and novel formulations are actively being investigated to make them more convenient and effective for all patient populations. Barriers to accessing EC, including the widespread presence of contraception deserts, threaten to broaden and accentuate the already existing inequities and disparities in society, at a time when they have reached the dimensions of a public health crisis.
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Effect of levonorgestrel emergency contraception on implantation and fertility: a review. Contraception 2022; 109:8-18. [DOI: 10.1016/j.contraception.2022.01.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 01/09/2022] [Accepted: 01/11/2022] [Indexed: 12/30/2022]
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Wagner BG, Cleland K, Batur P, Wu J, Rothberg MB. Emergency contraception: Links between providers' counseling choices, prescribing behaviors, and sociopolitical context. Soc Sci Med 2019; 242:112588. [DOI: 10.1016/j.socscimed.2019.112588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 09/20/2019] [Accepted: 10/03/2019] [Indexed: 12/30/2022]
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Mozzanega B, Nardelli GB. UPA and LNG in emergency contraception: the information by EMA and the scientific evidences indicate a prevalent anti-implantation effect. EUR J CONTRACEP REPR 2019; 24:4-10. [DOI: 10.1080/13625187.2018.1555662] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Bruno Mozzanega
- Department SDB Woman’s and Child’s Health, University of Padua, Padova, Italy
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8
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Effect of ulipristal acetate and mifepristone at emergency contraception dose on the embryo-endometrial attachment using an in vitro human trophoblastic spheroid and endometrial cell co-culture model. Hum Reprod 2017; 32:2414-2422. [DOI: 10.1093/humrep/dex328] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 10/19/2017] [Indexed: 12/23/2022] Open
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9
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Cameron ST, Li HWR, Gemzell-Danielsson K. Current controversies with oral emergency contraception. BJOG 2017; 124:1948-1956. [DOI: 10.1111/1471-0528.14773] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2017] [Indexed: 12/30/2022]
Affiliation(s)
- ST Cameron
- Chalmers Sexual and Reproductive Health Centre; Edinburgh UK
| | - HWR Li
- Department of Obstetrics and Gynaecology; University of Hong Kong; Queen Mary Hospital; Hong Kong Hong Kong
- Shenzhen Key Laboratory of Fertility Regulation; Reproductive Medicine Centre; The University of Hong Kong-Shenzhen Hospital; Shenzhen China
| | - K Gemzell-Danielsson
- Shenzhen Key Laboratory of Fertility Regulation; Reproductive Medicine Centre; The University of Hong Kong-Shenzhen Hospital; Shenzhen China
- Department of Women's and Children's Health; Division of Obstetrics and Gynaecology; Karolinska Institutet; Karolinska University Hospital; Stockholm Sweden
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10
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Abstract
Unplanned or unintended pregnancy remains a significant challenge for adolescents; many teens who plan ahead but opt not to choose long-acting reversible contraceptive methods have high failure rates with condom usage, oral contraceptives, and other less long-acting methods. Emergency contraception (EC) remains a necessity for those adolescents seeking a second chance to prevent the unintended consequences of unplanned sexual activity. At present, 5 postcoital methods remain available as EC globally: intrauterine devices, ulipristal acetate, a selective progesterone modulator, mifepristone; levonorgestrel, and ethinyl estradiol plus levonorgestrel or norgestrel (rarely used now that progestin only methods are more readily available).
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Affiliation(s)
- Ellen S Rome
- Center for Adolescent Medicine, Cleveland Clinic Children's Hospital, A120, 9500 Euclid Avenue, Cleveland, OH 44195, USA; Cleveland Clinic Lerner College of Medicine, Cleveland, OH, USA.
| | - Veronica Issac
- Center for Adolescent Medicine, Cleveland Clinic Children's Hospital, A120, 9500 Euclid Avenue, Cleveland, OH 44195, USA
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11
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Moral Certitude in the Use of Levonorgestrel for the Treatment of Sexual Assault Survivors. PHILOSOPHY AND MEDICINE 2017. [DOI: 10.1007/978-3-319-55766-3_15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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12
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Contraception d’urgence. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2016; 38:S143-S152. [DOI: 10.1016/j.jogc.2016.09.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Li H, Lo S, Ng E, Ho P. Efficacy of ulipristal acetate for emergency contraception and its effect on the subsequent bleeding pattern when administered before or after ovulation. Hum Reprod 2016; 31:1200-7. [DOI: 10.1093/humrep/dew055] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 02/22/2016] [Indexed: 12/30/2022] Open
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García-Calvente MDM, Lomas-Hernández V. Anticoncepción de urgencia y objeción de conciencia: un debate sin cerrar. GACETA SANITARIA 2016; 30:91-3. [DOI: 10.1016/j.gaceta.2015.12.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 12/04/2015] [Accepted: 12/21/2015] [Indexed: 01/18/2023]
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Schneider AP, Kubat C, Zainer CM. Appreciation for Analysis of how Levonorgestrel Works and Reservations with the use of Meloxicam as Emergency Contraception. Linacre Q 2016; 83:52-68. [DOI: 10.1080/00243639.2016.1145894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
This paper is a response to Dr. Kathleen Raviele's recent article on her critical analysis of the use of levonorgestrel given to women postsexual assault and her suggestion that the use of Meloxicam may be an ethical alternative.
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Affiliation(s)
| | - Christopher Kubat
- Catholic Social Services of Southern Nebraska, Lincoln, Nebraska, USA
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Faúndes A, Osis MJ, Sousa MH, Duarte GA, Miranda L, Oliveira W. Physicians' information to patients and prescription of the emergency contraceptive pill according to their personal experience of using the method and perception of its mechanism of action. EUR J CONTRACEP REPR 2015; 21:176-82. [PMID: 26572173 DOI: 10.3109/13625187.2015.1111325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVES The aim of the study was to evaluate the association between physicians' understanding of the mechanism of action of the emergency contraceptive pill (ECP), their personal use of it, and their practice in informing their patients about the method and in prescribing it. METHODS The study was carried out in a sample of 3337 obstetrician-gynaecologists who responded to a mailed questionnaire. Bivariate analysis was used to test the association between physicians' personal use of the ECP, their understanding of its mechanism of action, and their practice in informing their patients about the method and in prescribing it. Multiple Poisson regression analysis was carried out to identify variables independently associated with the two dependent variables. RESULTS Multiple regression analysis showed that the percentage of physicians who had informed their patients about the ECP was significantly lower among those who had needed it themselves but had not used it and among those living in the northeast of Brazil. A significantly higher percentage of female than male physicians had provided information on the ECP. The percentage of physicians who had prescribed the ECP was significantly lower among those who had needed it themselves but had not used it and among those who believed that it caused a mini-abortion. The proportion of physicians who had ever-prescribed the ECP was greater among those who worked exclusively in private practice and among those who worked in a state capital. CONCLUSIONS The misconception that emergency contraception could cause a mini-abortion was associated with its denial to potential users, while physicians' personal experience of needing to use it favoured the likelihood of their informing potential users about it and prescribing it.
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Affiliation(s)
- Aníbal Faúndes
- a Department of Obstetrics and Gynaecology , University of Campinas (UNICAMP) , Campinas , SP , Brazil ;,b Centre of Research on Reproductive Health of Campinas (CEMICAMP) , Campinas , SP , Brazil
| | - Maria José Osis
- a Department of Obstetrics and Gynaecology , University of Campinas (UNICAMP) , Campinas , SP , Brazil ;,b Centre of Research on Reproductive Health of Campinas (CEMICAMP) , Campinas , SP , Brazil
| | - Maria Helena Sousa
- b Centre of Research on Reproductive Health of Campinas (CEMICAMP) , Campinas , SP , Brazil
| | - Graciana Alves Duarte
- b Centre of Research on Reproductive Health of Campinas (CEMICAMP) , Campinas , SP , Brazil
| | - Laura Miranda
- b Centre of Research on Reproductive Health of Campinas (CEMICAMP) , Campinas , SP , Brazil
| | - William Oliveira
- a Department of Obstetrics and Gynaecology , University of Campinas (UNICAMP) , Campinas , SP , Brazil ;,b Centre of Research on Reproductive Health of Campinas (CEMICAMP) , Campinas , SP , Brazil
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Abstract
There has been much debate regarding levonorgestrel emergency contraception's (LNG-EC's) method of action since 1999 when the Food and Drug Administration first approved its use. Proponents of LNG-EC have argued that they have moral certitude that LNG-EC works via a non-abortifacient mechanism of action, and claim that all the major scientific and medical data consistently support this hypothesis. However, newer medical data serve to undermine the consistency of the non-abortifacient hypothesis and instead support the hypothesis that preovulatory administration of LNG-EC has significant potential to work via abortion. The implications of the newer data have important ramifications for medical personnel, patients, and both Catholic and non-Catholic emergency room protocols. In the future, technology such as the use of early pregnancy factor may have the potential to quantify how frequently preovulatory LNG-EC works via abortion. Lay Summary: How Plan B (levonorgestrel emergency contraception) works has been vigorously debated ever since the Food and Drug Administration approved it in 1999. Many doctors and researchers claim that it has either no-or at most-an extremely small chance of working via abortion. However, the latest scientific and medical evidence now demonstrates that levonorgestrel emergency contraception theoretically works via abortion quite often. The implications of the newer data have important ramifications for medical personnel, patients, and both Catholic and non-Catholic emergency room rape protocols.
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Affiliation(s)
| | - Rebecca Peck
- Florida State University College of Medicine, FL, USA
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18
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Li HWR, Lo SST, Ho PC. Emergency contraception. Best Pract Res Clin Obstet Gynaecol 2014; 28:835-44. [DOI: 10.1016/j.bpobgyn.2014.04.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 04/23/2014] [Accepted: 04/25/2014] [Indexed: 12/30/2022]
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Abstract
The Ethical and Religious Directives for Catholic Health Care Services allows the use of an emergency contraceptive for a woman who has been raped, as a defense against her attacker's sperm, provided the drug prevents fertilization and does not act against a conceived human life. Catholic emergency rooms around the country have been pressured to provide Plan B (LNG-EC) to patients seeking help after a sexual assault. Catholic bioethicists have supported the use of this drug based on their interpretation of the scientific literature regarding its mechanism of action. This paper presents a review of the mechanisms of action of LNG-EC when given during the fertile window, showing a high probability that it acts against human life rather than preventing fertilization, and proposes another class of drugs as a possible alternative.
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20
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Monge ME, Dwivedi P, Zhou M, Payne M, Harris C, House B, Juggins Y, Cizmarik P, Newton PN, Fernández FM, Jenkins D. A tiered analytical approach for investigating poor quality emergency contraceptives. PLoS One 2014; 9:e95353. [PMID: 24748219 PMCID: PMC3991657 DOI: 10.1371/journal.pone.0095353] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 03/25/2014] [Indexed: 11/18/2022] Open
Abstract
Reproductive health has been deleteriously affected by poor quality medicines. Emergency contraceptive pills (ECPs) are an important birth control method that women can use after unprotected coitus for reducing the risk of pregnancy. In response to the detection of poor quality ECPs commercially available in the Peruvian market we developed a tiered multi-platform analytical strategy. In a survey to assess ECP medicine quality in Peru, 7 out of 25 different batches showed inadequate release of levonorgestrel by dissolution testing or improper amounts of active ingredient. One batch was found to contain a wrong active ingredient, with no detectable levonorgestrel. By combining ultrahigh performance liquid chromatography-ion mobility spectrometry-mass spectrometry (UHPLC-IMS-MS) and direct analysis in real time MS (DART-MS) the unknown compound was identified as the antibiotic sulfamethoxazole. Quantitation by UHPLC-triple quadrupole tandem MS (QqQ-MS/MS) indicated that the wrong ingredient was present in the ECP sample at levels which could have significant physiological effects. Further chemical characterization of the poor quality ECP samples included the identification of the excipients by 2D Diffusion-Ordered Nuclear Magnetic Resonance Spectroscopy (DOSY 1H NMR) indicating the presence of lactose and magnesium stearate.
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Affiliation(s)
- María Eugenia Monge
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia, United States of America
| | - Prabha Dwivedi
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia, United States of America
| | - Manshui Zhou
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia, United States of America
| | - Michael Payne
- Product Quality and Compliance, FHI 360, Durham, North Carolina, United States of America
| | - Chris Harris
- Product Quality and Compliance, FHI 360, Durham, North Carolina, United States of America
| | - Blaine House
- Product Quality and Compliance, FHI 360, Durham, North Carolina, United States of America
| | - Yvonne Juggins
- Product Quality and Compliance, FHI 360, Durham, North Carolina, United States of America
| | - Peter Cizmarik
- Product Quality and Compliance, FHI 360, Durham, North Carolina, United States of America
| | - Paul N. Newton
- Lao-Oxford-Mahosot Hospital-Wellcome Trust Research Unit, Microbiology Laboratory, Mahosot Hospital, Vientiane, Lao PDR
- Centre for Tropical Medicine, Churchill Hospital, University of Oxford, Oxford, United Kingdom
- WorldWide Antimalarial Resistance Network, Churchill Hospital, University of Oxford, Oxford, United Kingdom
| | - Facundo M. Fernández
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia, United States of America
| | - David Jenkins
- Product Quality and Compliance, FHI 360, Durham, North Carolina, United States of America
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Shohel M, Rahman MM, Zaman A, Uddin MMN, Al-Amin MM, Reza HM. A systematic review of effectiveness and safety of different regimens of levonorgestrel oral tablets for emergency contraception. BMC Womens Health 2014; 14:54. [PMID: 24708837 PMCID: PMC3977662 DOI: 10.1186/1472-6874-14-54] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 03/30/2014] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Unintended pregnancy is a complex phenomenon which raise to take an emergency decision. Low contraceptive prevalence and high user failure rates are the leading causes of this unexpected situation. High user failure rates suggest the vital role of emergency contraception to prevent unplanned pregnancy. Levonorgestrel - a commonly used progestin for emergency contraception. However, little is known about its pharmacokinetics and optimal dose for use. Hence, there is a need to conduct a systematic review of the available evidences. METHODS Randomized, double-blind trials were sought, evaluating healthy women with regular menstrual cycles, who requested emergency contraception within 72 h of unprotected coitus, to one of three regimens: 1.5 mg single dose levonorgestrel, two doses of 0.75 mg levonorgestrel given 12 h apart or two doses of 0.75 mg levonorgestrel given 24 h apart. The primary outcome was unintended pregnancy; other outcomes were side-effects and timing of next menstruation. RESULTS Every trial under consideration successfully established the contraceptive effectiveness of levonorgestrel for preventing unintended pregnancy. Moreover, a single dose of levonorgestrel 1.5 mg for emergency contraception supports its safety and efficacy profile. If two doses of levonorgestrel 0.75 mg are intended for administration, the second dose can positively be taken 12-24 h after the first dose without compromising its contraceptive efficacy. The main side effect was frequent menstrual irregularities. No serious adverse events were reported. CONCLUSIONS The review shows that, emergency contraceptive regimen of single-dose levonorgestrel is not inferior in efficacy to the two-dose regimen. All the regimens studied were very efficacious for emergency contraception and prevented a high proportion of pregnancies if taken within 72 h of unprotected coitus. Single levonorgestrel dose (1.5 mg) can substitute two 0.75 mg doses 12 or 24 h apart. With either regimen, the earlier the treatment is given, the more effective it seems to be.
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Affiliation(s)
- Mohammad Shohel
- Department of Pharmaceutical Sciences, North South University, Dhaka 1229, Bangladesh
| | | | - Asif Zaman
- Department of Pharmaceutical Sciences, North South University, Dhaka 1229, Bangladesh
| | | | - Md Mamun Al-Amin
- Department of Pharmaceutical Sciences, North South University, Dhaka 1229, Bangladesh
| | - Hasan Mahmud Reza
- Department of Pharmaceutical Sciences, North South University, Dhaka 1229, Bangladesh
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Affiliation(s)
- Bruno Mozzanega
- Department of Woman and Child Health, University of Padua, Padova, Italy
| | - Salvatore Gizzo
- Department of Woman and Child Health, University of Padua, Padova, Italy
| | - Stefania Di Gangi
- Department of Woman and Child Health, University of Padua, Padova, Italy
| | - Erich Cosmi
- Department of Woman and Child Health, University of Padua, Padova, Italy
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Hermanny A, de Nascimento J, Fazano F, Munuce MJ, Bahamondes L. Effect of levonorgestrel as emergency contraception on spermatozoa function: a review. ACTA ACUST UNITED AC 2014. [DOI: 10.1586/eog.12.6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Lech MM, Ostrowska L, Swiątek E. Emergency contraception in a country with restricted access to contraceptives and termination of pregnancy, a prospective follow-up study. Acta Obstet Gynecol Scand 2013; 92:1183-7. [PMID: 23763598 DOI: 10.1111/aogs.12198] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 06/05/2013] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Poland has a restrictive abortion law. Emergency contraception (EC) is expensive and available only on prescription, which is not easily obtainable in public health care. We aimed to identify the main reasons for EC requests, observed failure rates and the type and incidence of adverse effects. DESIGN Prospective single-center observational study. POPULATION A cohort of women living in Warsaw, who requested EC. METHODS Data were collected via a questionnaire completed by healthcare providers prescribing EC, and included age, date of the request, previous EC use, time from intercourse to clinic visit and day of menstrual cycle on which intercourse took place. MAIN OUTCOME MEASURES Reason for EC request, time lapse between unprotected intercourse and EC use, age of women requesting EC, reported cases of pregnancy. RESULTS A total of 4655 women requested EC. Of these 62.9% (n = 2928) were ≤25 years old. During follow up, 0.75% (31 individuals) became pregnant. Adverse effects of hormonal EC were rare and mild. The main reason for requesting EC was problems associated with condoms (63.2%, n = 2609). The mean interval between unprotected intercourse and EC use was 21.2 h, but 26.7 h when EC failed (n.s.). Considering intake within and after 24 h, the difference was significant (p < 0.05). CONCLUSIONS Women living in Warsaw seeking EC used the EC product very soon after unprotected intercourse, and this was probably one of the most important reasons for the low pregnancy rates in the studied population.
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Affiliation(s)
- Medard M Lech
- Fertility and Sterility Research Centre, Warsaw, Poland
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25
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Anderson DC, Sullivan DM. Plan B and the German Catholic bishops. Ann Pharmacother 2013; 47:1079-80. [PMID: 23737514 DOI: 10.1345/aph.1s157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Germany's Catholic bishops recently ruled that levonorgestrel emergency contraception (EC) was acceptable for prevention of pregnancy in the case of rape. The ruling represents a significant change in Catholic doctrine that has been opposed to most forms of birth control. In their ruling the bishops cited a lack of evidence that levonorgestrel EC acts as an abortifacient. This case serves as a reminder of the need for bioethics to be based on current scientific literature as well as articles of faith and morals.
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Affiliation(s)
- Douglas C Anderson
- Department of Pharmacy Practice, School of Pharmacy, Cedarville University, Cedarville, OH, USA.
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Rafie S, McIntosh J, Gardner DK, Gawronski KM, Karaoui LR, Koepf ER, Lehman KJ, McBane S, Patel-Shori NM. Over-the-Counter Access to Emergency Contraception without Age Restriction: An Opinion of the Women's Health Practice and Research Network of the American College of Clinical Pharmacy. Pharmacotherapy 2013; 33:549-57. [DOI: 10.1002/phar.1229] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Sally Rafie
- University of California San Diego Health System; San Diego California
| | | | | | | | - Lamis R. Karaoui
- School of Pharmacy; Lebanese American University; Byblos Lebanon
| | - Erin R. Koepf
- University of New England College of Pharmacy; Portland Maine
| | | | - Sarah McBane
- Skaggs School of Pharmacy and Pharmaceutical Sciences; University of California San Diego; La Jolla California
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McKay RJ, Gilbert L. An emergency contraception algorithm based on risk assessment: changes in clinicians' practice and patients' choices. JOURNAL OF FAMILY PLANNING AND REPRODUCTIVE HEALTH CARE 2013; 39:201-6. [PMID: 23430815 DOI: 10.1136/jfprhc-2012-100495] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVES When ulipristal acetate (UPA) was introduced into the Contraceptive and Sexual Health Services service in June 2011 an algorithm was developed to guide method selection. The aim was to encourage clinicians to assess risk and to offer a copper intrauterine device (IUD) as first-line choice with hormonal methods as second-line choice. METHODS UPA was the second-line choice for presentations up to 120 hours after high-risk episodes (i.e. around the time of ovulation). Women at lower risk were also offered UPA if presentation was between 72 and 120 hours after unprotected intercourse unless the risk was very low, in which case levonorgestrel 1.5 mg was the second-line choice. RESULTS Prior to the protocol only 49% of women were offered an IUD compared with 61.6% afterwards. This improved further in the subgroup of women at high risk where 93.3% were offered an IUD compared with 59% initially. After the introduction of UPA the percentage of women accepting the IUD fell from 30% to 14.1%. Overall 14.5% of women received UPA compared to 7.8% receiving an IUD. CONCLUSIONS Introduction of a standardised protocol for the provision of emergency contraception has significantly increased the proportion of women offered an IUD as postcoital contraception, particularly in women at high risk of conception. Introduction of UPA has seen a halving of the number of women accepting the IUD. This is cause for concern. Further investigation into the reasons behind this decrease in IUD uptake needs to be undertaken.
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Affiliation(s)
- Rebecca Jayne McKay
- Department of Reproductive Medicine, Cambridge Universities Hospitals NHS Foundation Trust, Cambridge, UK.
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Koyama A, Hagopian L, Linden J. Emerging options for emergency contraception. CLINICAL MEDICINE INSIGHTS. REPRODUCTIVE HEALTH 2013; 7:23-35. [PMID: 24453516 PMCID: PMC3888080 DOI: 10.4137/cmrh.s8145] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Emergency post-coital contraception (EC) is an effective method of preventing pregnancy when used appropriately. EC has been available since the 1970s, and its availability and use have become widespread. Options for EC are broad and include the copper intrauterine device (IUD) and emergency contraceptive pills such as levonorgestrel, ulipristal acetate, combined oral contraceptive pills (Yuzpe method), and less commonly, mifepristone. Some options are available over-the-counter, while others require provider prescription or placement. There are no absolute contraindications to the use of emergency contraceptive pills, with the exception of ulipristal acetate and mifepristone. This article reviews the mechanisms of action, efficacy, safety, side effects, clinical considerations, and patient preferences with respect to EC usage. The decision of which regimen to use is influenced by local availability, cost, and patient preference.
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Affiliation(s)
- Atsuko Koyama
- Department of Pediatric Emergency Medicine, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Laura Hagopian
- Department of Emergency Medicine, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Judith Linden
- Department of Emergency Medicine, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts, USA
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Abstract
Emergency contraception (EC) is any method used after sexual intercourse to prevent pregnancy. This article provides an overview of the history of EC methods and describes the current availability of oral and intrauterine EC. Oral forms include the Yuzpe regimen (combining ethinyl estradiol and levonorgestrel), levonorgestrel-only pills, and ulipristal acetate, which is a new emergency contraceptive drug recently approved by the US Food and Drug Administration. The copper T-380A intrauterine device can also be used for EC. Information about dosing, timing, access, and other considerations in the provision of EC is covered. Clinicians should be aware of all available options in order to counsel women in need of EC appropriately.
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Abstract
OBJECTIVE To review current knowledge about emergency contraception (EC), including available options, their modes of action, efficacy, safety, and the effective provision of EC within a practice setting. OPTIONS The combined estradiol-levonorgestrel (Yuzpe regimen) and the levonorgestrel-only regimen, as well as post-coital use of copper intrauterine devices, are reviewed. OUTCOMES Efficacy in terms of reduction in risk of pregnancy, safety, and side effects of methods for EC and the effect of the means of access to EC on its appropriate use and the use of consistent contraception. EVIDENCE Studies published in English between January 1998 and March 2010 were retrieved though searches of Medline and the Cochrane Database, using appropriate key words (emergency contraception, post-coital contraception, emergency contraceptive pills, post-coital copper IUD). Clinical guidelines and position papers developed by health or family planning organizations were also reviewed. VALUES The studies reviewed were classified according to criteria described by the Canadian Task Force on Preventive Health Care, and the recommendations for practice were ranked according to this classification (Table 1). BENEFITS, HARMS, AND COSTS These guidelines are intended to help reduce unintended pregnancies by increasing awareness and appropriate use of EC. SPONSOR The Society of Obstetricians and Gynaecologists of Canada. Summary Statements 1. Hormonal emergency contraception may be effective if used up to 5 days after unprotected intercourse. (II-2) 2. The earlier hormonal emergency contraception is used, the more effective it is. (II-2) 3. A copper IUD can be effective emergency contraception if used within 7 days after intercourse. (II-2) 4. Levonorgestrel emergency contraception regimens are more effective and cause fewer side effects than the Yuzpe regimen. (I) 5. Levonorgestrel emergency contraception single dose (1.5 mg) and the 2-dose levonorgestrel regimen (0.75 mg 12 hours apart) have similar efficacy with no difference in side effects. (I) 6. Of the hormonal emergency contraception regimens available in Canada, levonorgestrel-only is the drug of choice. (I) 7. A pregnancy that results from failure of emergency contraception need not be terminated (I) Recommendations 1. Emergency contraception should be used as soon as possible after unprotected sexual intercourse. (II-2A) 2. Emergency contraception should be offered to women if unprotected intercourse has occurred within the time it is known to be effective (5 days for hormonal methods and up to 7 days for a copper IUD). (II-2B) 3. Women should be evaluated for pregnancy if menses have not begun within 21 days following emergency contraception treatment. (III-A) 4. During physician visits for periodic health examinations or reproductive health concerns, any woman in the reproductive age group who has not been sterilized may be counselled about emergency contraception in advance with detailed information about how and when to use it. (III-C).
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Lee CJ, Ahonen K, Apling M, Bork C. Emergency contraception knowledge among nurse practitioner students. ACTA ACUST UNITED AC 2012; 24:604-11. [PMID: 23006019 DOI: 10.1111/j.1745-7599.2012.00742.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
PURPOSE The purpose of this study was to ascertain the knowledge level of nurse practitioner (NP) students about emergency contraception (EC), and to explore attitudes about EC that may intersect with willingness to prescribe EC. DATA SOURCES Four hundred and sixty-seven NP students completed a 30-item web-based survey using Vovici survey software. CONCLUSIONS Students who reported formal content on EC in their program of study showed significantly better mean knowledge scores (t= 5.279, df = 459, p < .001). Gaps in NP students' knowledge of EC mechanisms of action, understanding of indications and contraindications were apparent. Younger students (F(3,457) = 4.994, p < .002), those newer to nursing (F(4,456) = 6.641, p < .0005), and women's health NP students (F(4,445) = 3.488, p < .008), demonstrated significantly better knowledge. Attitudes regarding EC appeared to be tied to the respondent's knowledge about EC. IMPLICATIONS FOR PRACTICE Knowledge is an important factor in informing NP practice decisions. Clinicians need accurate, evidence-based knowledge to provide health education and counseling to reproductive age women if unintended pregnancies are to be reduced.
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Affiliation(s)
- Carolyn J Lee
- College of Nursing, University of Toledo, Toledo, OH 43614-2598, USA.
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32
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Leung VWY, Soon JA, Levine M. Measuring and Reporting of the Treatment Effect of Hormonal Emergency Contraceptives. Pharmacotherapy 2012; 32:210-21. [DOI: 10.1002/j.1875-9114.2012.01041.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Vivian W. Y. Leung
- Faculty of Pharmaceutical Sciences; University of British Columbia; Vancouver; British Columbia; Canada
| | - Judith A. Soon
- Faculty of Pharmaceutical Sciences; University of British Columbia; Vancouver; British Columbia; Canada
| | - Marc Levine
- Faculty of Pharmaceutical Sciences; University of British Columbia; Vancouver; British Columbia; Canada
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33
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Vargas MF, Tapia-Pizarro AA, Henríquez SP, Quezada M, Salvatierra AM, Noe G, Munroe DJ, Velasquez LA, Croxatto HB. Effect of single post-ovulatory administration of levonorgestrel on gene expression profile during the receptive period of the human endometrium. J Mol Endocrinol 2012; 48:25-36. [PMID: 22052941 DOI: 10.1530/jme-11-0094] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The hypothesis that levonorgestrel (LNG) used as an emergency contraceptive interferes with endometrial receptivity remains unproven. We compared the endometrial gene expression profile during the receptive period after administering a single dose of LNG 1.5 mg or placebo on day 1 of the luteal phase. An endometrial biopsy was done on day LH+7 or LH+8 and samples were taken from seven volunteers, each one contributing with one cycle treated with placebo and another with LNG. The expression of 20 383 genes was determined using cDNA microarrays. Real-time RT-PCR was used 1) to confirm the differences found in DNA microarray analysis and 2) to determine the effect of LNG on transcript levels of C3, C4BPα, COX2, MAOA, S100A4, and SERPINB9, known to be upregulated during receptivity, and on cPLA2α, JAK1, JNK1, CTSL1, and GSTP1, known to respond to mifepristone. Additional endometrial biopsies were done during the pre-receptive (LH+3) and receptive (LH+7) period and samples were taken from eight untreated volunteers in order to determine the changes associated with acquisition of receptivity of 14 genes. Mean levels of PAEP, TGM2, CLU, IGF2, and IL6ST mRNAs increased after administering LNG while those of HGD, SAT1, EVA1, LOC90133, ANXA1, SLC25A29, CYB5A, CRIP1, and SLC39A14 decreased. Except for the level of ANXA1 transcript, all changes remained within the range observed in untreated controls, and none of the transcripts responding to mifepristone changed in response to LNG. Post-ovulatory administration of LNG caused minimal changes in gene expression profiling during the receptive period. Neither the magnitude nor the nature or direction of the changes endorses the hypothesis that LNG interferes with endometrial receptivity.
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Affiliation(s)
- M F Vargas
- Universidad Santiago de Chile, Santiago, Chile
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Hermanny A, Bahamondes MV, Fazano F, Marchi NM, Ortiz ME, Genghini MHRR, Croxatto HB, Bahamondes L. In vitro assessment of some sperm function following exposure to levonorgestrel in human fallopian tubes. Reprod Biol Endocrinol 2012; 10:8. [PMID: 22289514 PMCID: PMC3395846 DOI: 10.1186/1477-7827-10-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2011] [Accepted: 01/30/2012] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND The mechanism of action of levonorgestrel (LNG) as emergency contraception (EC) remains a subject of debate and its effect on sperm function has been only partially explained. The aim of this study was to assess whether LNG at a similar dose to those found in serum following oral intake for EC could affect spermatozoa when exposed to human fallopian tubes in vitro. METHODS Fifteen mini-laparotomies were performed, the side on which ovulation occurred was recorded, and both tubes were removed and perfused with a suspension containing 1 × 10(6) motile spermatozoa, with or without LNG. Following 4-hour incubation, the tubes were sectioned to separate the isthmus and the ampulla. Each segment was flushed and the material was evaluated to quantify the number of motile sperm, the number of spermatozoa adhering to the oviductal epithelium and the acrosome reaction (AR) rate. RESULTS The addition of LNG did not significantly alter the number of recovered motile spermatozoa either at the isthmus or at the ampulla, nor did it have any effect on the number of recovered spermatozoa adhered to the human tubal epithelium. Furthermore, LNG did not affect the AR rate. No significant differences were found even when the side on which ovulation occurred was taken into account. CONCLUSIONS In a similar dose to that observed in serum following oral intake for EC, LNG had no effect on the number of motile spermatozoa recovered from the human fallopian tubes in vitro, on their adhesion to the tubal epithelium, distribution or AR rate. The possible effect of LNG as EC on sperm function remains poorly understood.
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Affiliation(s)
- Alexia Hermanny
- Human Reproduction Unit, Department of Obstetrics and Gynecology, School of Medicine, University of Campinas (UNICAMP), 13084-971 Campinas, SP, Brazil
| | - M Valeria Bahamondes
- Human Reproduction Unit, Department of Obstetrics and Gynecology, School of Medicine, University of Campinas (UNICAMP), 13084-971 Campinas, SP, Brazil
| | - Francisco Fazano
- Human Reproduction Unit, Department of Obstetrics and Gynecology, School of Medicine, University of Campinas (UNICAMP), 13084-971 Campinas, SP, Brazil
| | - Nadia M Marchi
- Human Reproduction Unit, Department of Obstetrics and Gynecology, School of Medicine, University of Campinas (UNICAMP), 13084-971 Campinas, SP, Brazil
| | | | - Maria Heloisa RR Genghini
- Human Reproduction Unit, Department of Obstetrics and Gynecology, School of Medicine, University of Campinas (UNICAMP), 13084-971 Campinas, SP, Brazil
| | - Horacio B Croxatto
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Luis Bahamondes
- Human Reproduction Unit, Department of Obstetrics and Gynecology, School of Medicine, University of Campinas (UNICAMP), 13084-971 Campinas, SP, Brazil
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Shrader SP, Hall LN, Ragucci KR, Rafie S. Updates in hormonal emergency contraception. Pharmacotherapy 2012; 31:887-95. [PMID: 21923590 DOI: 10.1592/phco.31.9.887] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In recent years, there have been many updates in hormonal emergency contraception. Levonorgestrel emergency contraception has been available for several years to prevent pregnancy when used within 72 hours after unprotected intercourse or contraceptive failure, and it was recently approved for nonprescription status for patients aged 17 years or older. Current research suggests that the primary mechanism of action is delaying ovulation. Ulipristal is the newest emergency contraception, available by prescription only, approved for use up to 120 hours after unprotected intercourse or contraceptive failure. The primary mechanism of action is delaying ovulation. When compared with levonorgestrel emergency contraception, ulipristal was proven noninferior in preventing pregnancy. Evidence suggests that ulipristal does not lose efficacy from 72-120 hours; however, more studies are warranted to support this claim. Many misconceptions and controversies about hormonal emergency contraception still exist. Research does not support that increased access to emergency contraception increases sexual risk-taking behavior. Several studies suggest that health care providers, including pharmacists, could benefit from increased education about emergency contraception. It is important for pharmacists to remain up-to-date on the most recent hormonal emergency contraception products and information, as pharmacists remain a major point of access to emergency contraception.
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Affiliation(s)
- Sarah P Shrader
- Department of Clinical Pharmacy and Outcomes Sciences, South Carolina College of Pharmacy, Medical University of South Carolina Campus, Charleston, South Carolina 29425, USA.
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36
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Sarkar NN. The emergency contraceptive drug, levonorgestrel: A review of post-coital oral and peri-coital vaginal administration for prevention of pregnancy. J OBSTET GYNAECOL 2011; 31:703-7. [DOI: 10.3109/01443615.2011.611917] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Contraceptive efficacy of emergency contraception with levonorgestrel given before or after ovulation. Contraception 2011; 84:486-92. [DOI: 10.1016/j.contraception.2011.03.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Revised: 03/07/2011] [Accepted: 03/09/2011] [Indexed: 12/30/2022]
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Chen QJ, Xiang WP, Zhang DK, Wang RP, Luo YF, Kang JZ, Cheng LN. Efficacy and safety of a levonorgestrel enteric-coated tablet as an over-the-counter drug for emergency contraception: a Phase IV clinical trial. Hum Reprod 2011; 26:2316-21. [PMID: 21672924 PMCID: PMC3157624 DOI: 10.1093/humrep/der181] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND An enteric-coated levonorgestrel emergency contraceptive pill (E-LNG-ECP) is an improved formulation, in terms of side effects, which both dissolves and is absorbed in the intestine. Our aim was to evaluate the efficacy and safety of E-LNG-ECP as an over-the-counter (OTC) drug for emergency contraception (EC) in Chinese women. METHODS A Phase IV clinical trial was conducted in five family planning clinics in China. Women seeking EC within 72 h after unprotected sexual intercourse or contraceptive failure who met the inclusion criteria were recruited. The efficacy of contraception (primary end-point was pregnancy rate), side effects (i.e. safety) and the value of E-LNG-ECP for EC were investigated. RESULTS Of 2445 women (aged 15–48 years) who took E-LNG-ECP with follow-up to determine pregnancy, only five pregnancies (0.2%) occurred. The efficacy of contraception was 95.3%. In total, 6.5% of women reported at least one adverse event after taking E-LNG-ECP, and no serious adverse events were reported. Only four subjects (0.16%) reported vomiting. The incidence of menstrual cycle disturbance was 20.1% after taking E-LNG-ECP. Subjects who had previously taken ECPs (54.4% of these women) rated the acceptability of E-LNG-ECP at 9.36 (on a 10-point scale) higher (P<0.05) than the rating of other LNG-EC pills taken previously. CONCLUSIONS The study found that E-LNG-ECP was effective, safe and well tolerated as an OTC drug. However, an randomized controlled trial should be performed to compare standard LNG tablets with E-LNG-ECP.
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Affiliation(s)
- Q-J Chen
- Shanghai Institute of Planned Parenthood Research, Shanghai, PR China
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Lopez-del Burgo C, Mikolajczyk RT, Osorio A, Carlos S, Errasti T, de Irala J. Knowledge and beliefs about mechanism of action of birth control methods among European women. Contraception 2011; 85:69-77. [PMID: 22067806 DOI: 10.1016/j.contraception.2011.04.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 03/29/2011] [Accepted: 04/12/2011] [Indexed: 11/25/2022]
Abstract
BACKGROUND Adequate knowledge is essential for making informed decisions. We attempted to determine the level of knowledge about mechanisms of action of birth control methods in five representative samples of European women. STUDY DESIGN Randomly selected women, aged 18-49 years, completed an anonymous survey in Germany, France, the UK, Sweden and Romania (N=1137). Participants were asked about how contraceptive methods work and if providers should inform them about this issue. Multiple linear regression was used to evaluate women's characteristics associated with their knowledge of mechanisms of action. RESULTS The majority of women identified the unequivocal mode of action of condoms, sterilization and abortion. Fewer than 2% identified all possible mechanisms of action of hormonal contraceptives and intrauterine devices. Highly educated women correctly identified the mechanism or mechanisms of action of more methods than less educated women (β=0.22, 95% confidence interval 0.01-0.43). Regardless of their sociodemographic characteristics and their belief about when human life begins, most women (75%) stated that the provider should inform them about possible postfertilization effects. CONCLUSIONS European women have low knowledge about mechanisms of action of several contraceptive methods. The majority want to be informed about possible postfertilization effects. Since adequate knowledge is essential for making informed decisions, providers are encouraged to inform women about all possible mechanisms of action of contraceptives.
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Affiliation(s)
- Cristina Lopez-del Burgo
- Department of Preventive Medicine and Public Health, School of Medicine, University of Navarra, 31008 Pamplona, Navarra, Spain.
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Noé G, Croxatto HB, Salvatierra AM, Reyes V, Villarroel C, Muñoz C, Morales G, Retamales A. Response to the Letter to the Editor. Contraception 2011. [DOI: 10.1016/j.contraception.2010.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lopez-del Burgo C, Mikolajczyk RT, Stanford JB. Emergency contraception: an unresolved issue. Contraception 2010; 83:187; author reply 187-8. [PMID: 21237347 DOI: 10.1016/j.contraception.2010.07.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Accepted: 07/16/2010] [Indexed: 11/29/2022]
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