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Medical Abortion for Emergency Contraception Failure

Medical Termination of Pregnancy Due to Emergency Contraception Failure: A Randomized Trial Comparing Mifepristone Combined Misoprostol and Misoprostol Alone.

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00677755
Enrollment
394
Registered
2008-05-14
Start date
2004-10-31
Completion date
2007-11-30
Last updated
2008-05-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Abortion, Induced, Emergency Contraception

Keywords

Medical abortion, emergency contraception, mifepristone

Brief summary

The purpose of this study is to compare the efficacy, safety and acceptability of pre-treatment with mifepristone and misoprostol compared to misoprostol alone in the medical termination of pregnancy by mifepristone EC failure.

Detailed description

Women usually request an abortion when they have experienced an emergency contraception (EC) failure; this population represents 13% of all early pregnancy terminations in China. Many women would prefer to choose a medical abortion in order to avoid anesthesia, over a surgical operation. However, medical termination of a pregnancy after mifepristone EC failure has not been studied although it has already been extensively practiced by empirical means in China. There is no clarification in literature as to whether mifepristone is still effective in medical abortion with its previous failure experience in EC. This randomized study was aimed to compare the efficacy, safety and acceptability of pre-treatment with mifepristone and misoprostol compared to misoprostol alone in the medical termination of pregnancy by mifepristone EC failure.

Interventions

DRUGmifepristone combined misoprostol

women received a single dose of mifepristone (Mifepristone tablets; Xianju Pharmacy, Zhejiang, China) 200mg orally on day 1, and then returned to the clinic on day 3 and were given misoprostol (Cytotec tables; Searle,A Division of Monsanto.P.L.C, England )0.8mg orally

DRUGmisoprostol alone protocol

patients were only administered 0.8 mg of misoprostol orally on day 3.

Sponsors

Taizhou Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
16 Years to 40 Years
Healthy volunteers
No

Inclusion criteria

* Participants included in the study were women aged 16 years or older * with good general health, * experiencing a mifepristone emergency contraception failure, * presenting an intrauterine singleton pregnancy confirmed by pelvic ultrasound scan, with a crown-rump length compatible within 56 days of gestation at the enrolled day, and * seeking a medical abortion for unwanted pregnancy. * Women who had a threatened abortion or a failure pregnancy were also included. * Participants were required to sign an informed consent form before enrolment, willing to comply with the schedule of follow-up visits and willing to undergo surgical aspiration if indicated.

Exclusion criteria

* The

Design outcomes

Primary

MeasureTime frame
complete abortion ratestudy day 17 (14 days after misoprostol)

Secondary

MeasureTime frame
side effects, timing of expulsion and duration of bleedingtiming of expulsion at day 17, others at 45day after abortion

Countries

China

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026