Ectopic Pregnancy and Emergency Contraceptive Pills

Mechanism of action of emergency contraceptive pills.

Ulipristal Acetate (UPA) One study has demonstrated that UPA can delay ovulation. In this study, 34 women were treated when the size of the leading follicle was at least 18 mm. Each woman contributed one cycle treated with placebo and another with UPA. Follicular rupture failed to occur within 5 days following UPA treatment in 20 (59%) subjects while normal ovulation was observed in all women w...

Contraceptive Security Brief: Emergency Contraceptive Pills: Supply Chain Considerations

This publication was produced for review by the U.S. Agency for International Development. It was prepared by the USAID | DELIVER PROJECT, Task Order 4. © 2 00 5 Ar le tte G au tie r, Co ur te sy o f P ho to sh ar e Emergency contraception is an important component of reproductive health programs, providing women with the only method that can be used to prevent pregnancy after unprotected sex o...

How do levonorgestrel-only emergency contraceptive pills prevent pregnancy? Some considerations.

Controversial opinions exist about the possible mechanisms throughout emergency contraception prevents pregnancy. Recently, the International Federation of Gynaecology and Obstetrics and the International Consortium for Emergency Contraception released a Joint Statement declaring that 'inhibition or delay of ovulation should be their primary and possibly only mechanism of action'. They still ad...

Cost savings from emergency contraceptive pills in Canada.

OBJECTIVE To estimate cost savings from emergency contraceptive pills in Canada. METHODS We modeled cost savings when a single emergency contraceptive treatment was provided after unprotected intercourse and when women were provided emergency contraceptive pills in advance. RESULTS Each dollar spent on a single treatment saved $1.19--$2.35 (in Canadian currency), depending on the regimen an...

Progestogen-only emergency contraception and ectopic pregnancy.