Emergency postcoital contraception may be defined as the useof a drug or device to prevent pregnancy after intercourse.Unwanted pregnancy is common; worldwide, about 50 million pregnanciesare terminated each year.1 It has been calculated that eachyear the widespread use of emergency contraception in the UnitedStates could prevent over 1 million abortions and 2 millionunintended pregnancies that end in childbirth.2
A variety of different methods of emergency contraception areavailable (Table 1). The first to be described was high-doseestrogen, although currently the most widely used is a combinationof estrogen and progestin. Recent . . . [Full Text of this Article]
Probability of Conception
Mode of Action of Emergency Contraception
Effects on Ovulation
Effects on Fertilization
Effects on Gamete Transport
Effects on the Function of the Corpus Luteum
Effects on Implantation
Interruption of Pregnancy
Indications for Emergency Contraception
Efficacy of Emergency Contraception
Combined Estrogen and Progestin
Estrogen Alone
The Intrauterine Contraceptive Device
Progestin Alone
Danazol
Antiprogestins
Availability of Emergency Contraception
Conclusions
Source Information
From the Edinburgh Healthcare Trust Family Planning and Well Woman Services and the University of Edinburgh Department of Obstetrics and Gynaecology both in Edinburgh, Scotland.
Address reprint requests to Dr. Glasier at the Department of Obstetrics and Gynaecology, University of Edinburgh, 18 Dean Terr., Edinburgh EH4 1NL, Scotland, United Kingdom.
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