A randomized double-blind placebo-controlled study to assess the effect of oral contraceptive pills on the outcome of medical abortion with mifepristone and misoprostol
Source: Human Reproduction, Volume 14, Number 3, March 1999 , pp. 722-725(4)
Publisher: Oxford University Press
Abstract:This was a randomized double-blind placebo-controlled trial to determine the effect of oral contraceptive (OC) pills taken immediately after medical abortion on the duration of bleeding and complete abortion rate. Two hundred women in the first 49 days of pregnancy were given 200 mg mifepristone orally followed by 400 g misoprostol vaginally 48 h later. One day later, they were randomized to receive either OC pills (30 g of ethinyl oestradiol and 0.15 mg of levonorgestrel per tablet) or placebo for 21 days. The complete abortion rates were 98% in the OC group and 99% in the placebo group. The median duration of bleeding was similar: 17 (range: 5-57) days in the OC group and 16 (range: 6-55) days in the placebo group. In the OC group there was a small but significant fall in the haemoglobin concentration by 14 days (5.3 g/dl) after administration of mifepristone. The incidence of side-effects was similar in the two groups. We conclude that the use of OC pills does not decrease the duration of bleeding after medical abortion nor does it affect the abortion rate.Keywords: mifepristone/misoprostol/oral contraceptive pills/post-abortion bleeding
Document Type: Research article
Affiliations: 1: Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong, China 2: Shanghai Institute of Family Planning Technical Instruction, International Peace Maternity and Child Health Hospital, China Welfare Institute, Shanghai, People's Republic of China
Publication date: 1999-03-01
- Human Reproduction features full-length, peer-reviewed papers reporting original research, clinical case histories, as well as opinions and debates on topical issues. Papers published cover the scientific and medical aspects of reproductive physiology and pathology, endocrinology, andrology, gonad function, gametogenesis, fertilization, embryo development, implantation, pregnancy, genetics, genetic diagnosis, oncology, infectious disease, surgery, contraception, infertility treatment, psychology, ethics and social issues. The highest scientific and editorial standard is maintained throughout the journal along with a rapid rate of publication.