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The Emergency Contraception Website - Your website for the "Morning After"


Vea nuestra lista de Publicaciones sobre Anticoncepción de Emergencia.

Busque en la Base de Datos de Materiales para encontrar descripciones con materiales educativos y promocionales sobre anticoncepción de emergencia disponibles en los Estados Unidos y en otros países, incluidos materiales para clientes, recursos para actividades de educación y capacitación de proveedores y materiales para campañas de medios de comunicación.

Enlaces a Información sobre Anticoncepción y Salud Reproductiva

Publicaciones sobre Anticoncepción de Emergencia:

  1. Trussell J, Raymond E. Emergency contraception: a cost-effective approach to preventing unintended pregnancy.  A regularly updated review of the current literature, published online at Princeton University. January 2010 .
  2. American College of Obstetricians and Gynecologists. Emergency Contraception. ACOG Practice Bulletin, Number 69. Washington DC: The American College of Obstetrics and Gynecologists, December 2005. Para solicitarla, llame al 508-750-8400. Disponible también en Obstetrics & Gynecology 2005; 106:1443-1451.
  3. Arowojolu AO, Okewole IA, Adekunle AO. Comparative evaluation of the effectiveness and safety of two regimens of levonorgestrel for emergency contraception in Nigerians. Contraception 2002; 66:269-273.
  4. Belzer M, Sanchez K, Olson J, Jacobs AM, Tucker D. Advance supply of emergency contraception: a randomized trial in adolescent mothers. Journal of Pediatric and Adolescent Gynecology 2005; 18:347354.
  5. Cantor J, Baum K.  The limits of conscientious objection – May pharmacists refuse to fill prescriptions for emergency contraception? New England Journal of Medicine 2005; 51:2008-2012.
  6. Center for Reproductive Rights. Emergency contraception: common legal questions about prescribing, dispensing, repackaging, and advertising. New York NY: Center for Reproductive Rights, 2002.
  7. Cheng L, Gülmezoglu AM, Piaggio G, Ezcurra E, Van Look PFA. Interventions for emergency contraception. Cochrane Database Syst Rev 2008, Issue 2.
  8. Creinin MD, Schlaff W, Archer D, Wan L, Frezieres R, Thomas M, Rosenberg M, Higgins J. Progesterone receptor modulator for emergency contraception: a randomized controlled trial. Obstetrics & Gynecology 2006; 108:1089-1097.
  9. Cremer M, Holland E, Adams B, Klausner D, Nichols S, Ram RS, Alonzo T. Adolescent comprehension of emergency contraception in New York City. Obstetrics & Gynecology 2009;113:840-744.
  10. Croxatto HB, Devoto L, Durand M, Ezcurra E, Larrea F, Nagle C, Ortiz ME, Vantman D, Vega M, von Hertzen H. Mechanism of action of hormonal preparations used for emergency contraception: a review of the literature. Contraception 2001; 63:111-121.
  11. Croxatto HB, Ortiz ME, Müller AL.  Mechanisms of action of emergency contraception.  Steroids 2003; 68:1095-1098.
  12. Croxatto HB, Brache V, Pavez M, Cochon L, Forcelledo ML, Alvarez F, Massai R, Faundes A, Salvatierra AM. Pituitary-ovarian function following the standard levonorgestrel emergency contraceptive dose or a single 0.75-mg dose given on the days preceding ovulation. Contraception 2004; 70:442-450.
  13. Davidoff F, Trussell J. Plan B and the politics of doubt. Journal of the American Medical Association 2006; 296:1775-1778.
  14. Drazen J, Greene M, Wood A. The FDA, politics, and Plan B. New England Journal of Medicine 2004; 350:1561-1562.
  15. Durand M, Sépala M, del Carmen Cravioto M, Koistinen H, Koistinen R, González-Macedo J, Larrea F. Late follicular phase administration of levonorgestrel as an emergency contraceptive changes the secretory pattern of glycodelin in serum and endometrium during the luteal phase of the menstrual cycle. Contraception 2005; 71:451-457.
  16. Ellertson C, Trussell J, Stewart F, Winikoff B. Should emergency contraceptive pills be available without prescription? Journal of the American Women’s Association 1998; 53:226-229, 232.
  17. Ellertson C, Webb A, Blanchard K, Bigrigg A, Haskell S, Shochet T, Trussell J. Modifying the Yuzpe regimen of emergency contraception: a multicenter randomized controlled trial. Obstetrics & Gynecology 2003; 101:1160-1167.
  18. Ellertson C, Evans M, Ferden S, Leadbetter C, Spears A, Johnstone K, Trussell J. Extending the time limit for starting the Yuzpe regimen of emergency contraception to 120 hours. Obstetrics & Gynecology 2003; 101:1168-1171.
  19. Faculty of Family Planning and Reproductive Health Care Clinical Effectiveness Unit. FFPRHC Guidance April 2006. Emergency contraception. Journal of Family Planning and Reproductive Health Care 2006; 32:121-128.
  20. Family Health International. Adolescents and emergency contraceptive pills in developing countries.  Research Triangle Park, NC: Family Health International Working Paper Series, May 2005. 
  21. Fine P, Mathe H, Ginde S, Cullins V, Morfesis J, Gainer E. Ulipristal acetate taken 48–120 hours after intercourse for emergency contraception. Obstetrics & Gynecology 2010;115:257-263.
  22. Finer LB, Henshaw SK. Disparities in rates of unintended pregnancy in the United States, 1994 and 2001. Perspectives on Sexual and Reprodutive Health 2006; 38:90-96.
  23. Food and Drug Administration. Prescription drug products: certain combined oral contraceptives for use as postcoital emergency contraception. Federal Register 1997; 62:8610-8612.
  24. Gainer E, Kenfack B, Mboudou E, Doh AS, Bouyer J. Menstrual bleeding patterns following levonorgestrel emergency contraception. Contraception 2006; 74:118-124.
  25. Gardner JS, Hutchings J, Fuller TS, Downing D. Increasing access to emergency contraception through community pharmacies: lessons from Washington State.  Family Planning Perspectives 2001; 33:172-175.
  26. Glasier A, Cameron S, Fine P, Logan S, Casale W, Van Horn J, Sogor L, Blithe D, Scherrer B, Mathe H, Jaspart A, Ulmann A, Gainer E. Ulipristal acetate versus levonorgestrel for emergency contraception: a randomised non-inferiority trial and meta-analysis. Lancet 2010;online.
  27. Glasier A. Emergency postcoital contraception. New England Journal of Medicine 1997; 33:1058-1064. (Puede solicitar una copia).
  28. Glasier A, Baird D. The effects of self-administering emergency contraception. New England Journal of Medicine 1998; 339:1-4. (Puede solicitar una copia).
  29. Glasier A, Fairhurst K, Wyke S, Ziebland S, Seaman P, Walker J, Lakha F.  Advanced provision of emergency contraception does not reduce abortion rates.  Contraception 2004; 69:361-366.
  30. Glasier A. Emergency contraception: is it worth all the fuss? British Medical Journal 2006; 333:560-561.
  31. Gold MA, Wolford JE, Smith KA, Parker AM. The effects of advance provision of emergency contraception on adolescent women’s sexual and contraceptive behaviors. Journal of Pediatric and Adolescent Gynecology 2004; 17:87-96.
  32. Grimes DA. Emergency contraception – expanding opportunities for primary prevention. New England Journal of Medicine 1997; 337:1078-1079.
  33. Grimes DA. Switching emergency contraception to over-the-counter status. New England Journal of Medicine 2002; 347:846848.
  34. Grimes DA, Raymond EG, Scott Jones B. Emergency contraception over-the-counter: the medical and legal imperatives. Obstetrics & Gynecology 2001; 98:151-155.
  35. Halpern V, Raymond EG, Lopez LM. Repeated use of pre- and postcoital hormonal contraception for prevention of pregnancy. Cochrane Database of Systematic Reviews 2010;1.
  36. Harper CC, Cheong M, Rocca CH, Darney PD, Raine TR. The effect of increased access to emergency contraception among young adolescents.  Obstetrics & Gynecology 2005; 106:483-491.
  37. Harrison T. Availability of emergency contraception: a survey of hospital emergency department staff. Annals of Emergency Medicine 2005; 46:105110.
  38. Hatcher RA, Trussell J, Stewart F, Nelson A, Cates W, Guest F, Kowal D. Contraceptive Technology: Eighteenth Revised Edition. New York NY: Ardent Media, 2004.
  39. Hu X, Cheng L, Hua X, Glasier A. Advanced provision of emergency contraception to postnatal women in China makes no difference in abortion rates: a randomized controlled trial. Contraception 2005; 72:111-116.
  40. Jackson RA, Schwarz EB, Freedman L, Darney P. Advance supply of emergency contraception: effect on use and usual contraception – a randomized trial. Obstetrics & Gynecology 2003; 102:8-16.
  41. Jones RK, Darroch JE, Henshaw SK. Contraceptive use among U.S. women having abortions in 2000-2001. Perspectives on Sexual and Reproductive Health 2002; 34:294-303.
  42. The Kaiser Family Foundation.  Women’s health care providers’ experiences with emergency contraception, June 2003.
  43. Lo SS, Fan SYS, Ho PC, Glasier AF.  Effect of advanced provision of emergency contraception on women’s contraceptive behavior: a randomized controlled trial.  Human Reproduction 2004; 19:2404-2410.
  44. Marions L, Cekan SZ, Bygdeman M, Gemzell-Danielsson K. Effect of emergency contraception with levonorgestrel or mifepristone on ovarian function. Contraception 2004; 69:373-377.
  45. Marston C, Meltzer H, Majeed A. Impact on contraceptive practice of making emergency hormonal contraception available over the counter in Great Britain: repeated cross sectional surveys. British Medical Journal 2005; 331:271273.
  46. Massai MR, Forcelledo ML, Brache V, Tejada AS, Salvatierra AM, Reyes MV, Alvarez F, Faúndes A, Croxatto HB. Does meloxicam increase the incidence of anovulation induced by single administration of levonorgestrel in emergency contraception? A pilot study. Hum Reprod 2007;22:434-9.
  47. McCarthy SK. Availability of emergency contraceptive pills at university and college student health centers. Journal of American College Health 2002; 51:1522.
  48. Medical eligibility criteria for contraceptive use (Criterios médicos de elegibilidad para el uso de anticonceptivos) Third Edition. Geneva: World Health Organization, 2004.
  49. Moreau C, Bajos N, Trussell J. The impact of pharmacy access on emergency  contraceptive pills in France. Contraception 2006; 73:602-608.
  50. Ngai SW, Fan S, Li S, Cheng L, Ding J, Jing X, Ng EHY, Ho PC. A randomized trial to compare 24h versus 12h double dose regimen of levonorgestrel for emergency contraception.  Human Reproduction 2004; 20:307-311.
  51. Novikova N, Weisberg E, Stanczyk FZ, Croxatto HB, Fraser, IS. Effectiveness of levonorgestrel emergency contraception given before or after ovulation – a pilot study. Contraception 2007; 75: 112-118.
  52. Ortiz ME, Ortiz RE, Fuentes MA, Parraguez VH, Croxatto HB. Postcoital administration of levonorgestrel does not interfere with post-fertilization events in the new-world monkey Cebus apella. Human Reproduction 2004; 19:1352-1356.
  53. Piaggio G, von Hertzen H, Grimes DA, Van Look PFA. Timing of emergency contraception with levonorgestrel or the Yuzpe regimen. Lancet 1999; 353:721.
  54. Raine T, Harper C, Leon K, Darney P. Emergency contraception: advance provision in a young, high-risk clinic population. Obstetrics & Gynecology 2000; 96:1-7.
  55. Raine T, Harper C, Rocca C, Fischer R, Padian N, Klausner J, Darney P. Direct access to emergency contraception through pharmacies and effect on unintended pregnancy and STIs.  Journal of the American Medical Association 2005; 293:54-62.
  56. Raymond EG, Creinin MD, Barnhart KT, Lovvorn AE, Rountree W, Trussell J. Meclizine for prevention of nausea associated with emergency contraceptive pills: a randomized trial. Obstetrics & Gynecology 2000; 95:271277.
  57. Raymond E, Taylor D, Trussell J, Steiner MJ.  Minimum effectiveness of the levonorgestrel regimen of emergency contraception.  Contraception 2004; 69:79-81.
  58. Raymond EG, Goldberg A, Trussell J, Hays M, Roach E, Taylor D. Bleeding patterns after use of levonorgestrel emergency contraceptive pills. Contraception 2006; 73:376-381. Erratum. Contraception 2006; 74:349-350.
  59. Raymond EG, Stewart F, Weaver M, Monteith C, Van Der Pol B. Impact of increased access to emergency contraceptive pills: a randomized controlled trial. Obstetrics & Gynecology 2006; 108:1098-1106.
  60. Raymond EG, Trussell J, Polis C. Population impact of increased access to emergency contraceptive pills: a systematic review. Obstetrics & Gynecology 2007; 109:181-188.
  61. Raymond EG, L’Engle K, Tolley E, Ricciotti N, Arnold M, Park S. Comprehension of a prototype emergency contraception package label by female adolescents. Contraception 2009;79:199-205.
  62. Rodrigues I, Grou F, Joly J. Effectiveness of emergency contraception pills between 72 and 120 hours after unprotected sexual intercourse. American Journal of Obstetrics and Gynecology 2001; 184:531-537.
  63. Sambol N, Harper C, Kim L, Liu C, Darney P, Raine T. Pharmacokinetics of single-dose levonorgestrel in adolescents. Contraception 2006; 74:104-109.
  64. Steinbrook R. Waiting for Plan B – The FDA and Nonprescription Use of Emergency Contraception. New England Journal of Medicine 2004; 350:23272329.
  65. Stewart F and Trussell J. Prevention of pregnancy resulting from rape. American Journal of Preventive Medicine 2000; 19:228-229.
  66. Soon JA, Levine M, Osmond BL, Ensom MH, Fielding DW. Effects of making emergency contraception available without a physician’s prescription: a population-based study. Canadian Medical Association Journal 2005; 172:878-883.
  67. Task Force on Postovulatory Methods of Fertility Regulation.Randomised controlled trial of levonorgestrel versus the Yuzpe regimen of combined oral contraceptives for emergency contraception. Lancet 1998; 352:428-433.
  68. Trussell J, Stewart F, Guest F, Hatcher RA. Emergency contraceptive pills: a simple proposal to reduce unintended pregnancies. Family Planning Perspectives 1992; 24:269273.
  69. Trussell J, Ellertson C. The efficacy of emergency contraception. Fertility Control Reviews 1995; 4:811.
  70. Trussell J, Koenig, J, Ellertson C, Stewart, F. Preventing unintended pregnancy: the cost-effectiveness of three methods of emergency contraception. American Journal of Public Health, 1997; 87:932-937.
  71. Trussell J, Koenig J, Stewart F, Darroch JE.  Medical care cost savings from adolescent contraceptive use.  Family Planning Perspectives 1997; 29:248-55, 295.
  72. Trussell J, Raymond EG. Statistical evidence about the mechanism of action of the Yuzpe regimen of emergency contraception. Obstetrics & Gynecology 1999; 93:872-876.
  73. Trussell J, Rodríguez G, Ellertson C. Updated estimates of the effectiveness of the Yuzpe method of emergency contraception. Contraception 1999; 59:147151.
  74. Trussell J, Duran V, Shochet T, Moore K. Access to emergency contraception. Obstetrics & Gynecology 2000; 95:267270.
  75. Trussell J, Wiebe E, Shochet T, Guilbert É. Cost savings from emergency contraceptive pills in Canada.  Obstetrics & Gynecology 2001; 97:789-93.
  76. Trussell J, Hedley A, Raymond E.  Ectopic pregnancy following use of progestin-only ECPs [letter].  Journal of Family Planning and Reproductive Health Care 2003; 29:249.
  77. Trussell J, Shochet T.  Cost-effectiveness of emergency contraceptive pills in the public sector in the USA.  Expert Review of Pharmacoeconomics and Outcomes Research 2003; 3:433-440.
  78. Trussell J, Calabretto H. Cost savings from use of emergency contraceptive pills in Australia. Australian and New Zealand Journal of Obstetrics and Gynaecology 2005; 45:308-311.
  79. Trussell J, Raymond E, Stewart FH. Advance supply of emergency contraception: a randomized trial in adolescent mothers [Letter to the editor]. Journal of Pediatric and Adolescent Gynecology 2006; 19:251.
  80. Trussell J, Jordan B. Mechanism of action of emergency contraceptive pills. Contraception 2006; 74:87-89.
  81. United States Government Accountability OfficeFood and Drug Administration Decision Process to Deny Initial Application for Over-the-Counter Marketing of Emergency Contraceptive Drug Plan B Was Unusual.  November 2005.
  82. von Hertzen H, Piaggio G, Ding J, Chen J, Song S, Bártfai G, Ng E, Gemzell-Danielsson K, Oyunbileg A, Wu S, Cheng W, Lüdicke F, Pretnar-Darovec A, Kirkman R, Mittal S, Khomassuridze A, Apter D, Peregoudov A. Low dose mifepristone and two regimens of levonorgestrel for emergency contraception: a WHO multicentre randomised trial. Lancet 2002; 360:18031810.
  83. Wood AJJ, Drazen JM, Green MF.  A Sad Day for Science at the FDA.  New England Journal of Medicine 2005; 353:1197-1199.
  84. Wood SF.  Women’s Health and the FDA. New England Journal of Medicine 2005; 353:1650-1651.
  85. Wynn LL, Trussell J. The morning after on the internet: usage of and questions to the emergency contraception website. Contraception 2005; 72:5-13.
  86. Wynn LL, Trussell J. The social life of emergency contraception in the United States: disciplining pharmaceutical use, disciplining women’s sexuality, and constructing zygotic bodies. Medical Anthropology Quarterly 2006; 20:297-320.
  87. Wynn LL, Trussell J. Images of American sexuality in debates over nonprescription access to emergency contraceptive pills. Obstetrics & Gynecology 2006; 108:12721276.
  88. Yuzpe AA, Thurlow HJ, Ramzy I, Leyshon JI.  Post Coital Contraception: A Pilot Study.  Journal of Reproductive Medicine 1974; 13:53-58.
  89. Yuzpe AA, Lancee WJ.  Ethinylestradiol and dl-norgestrel as a postcoital contraceptive.  Fertility and Sterility 1977; 28:932-936. 




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