Medical Abortion for Emergency Contraception Failure

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 exclusion criteria included suspected or proven ectopic pregnancy, * allergy or contraindications for mifepristone (chronic systemic corticosteroid therapy, adrenal insufficiency) or misoprostol (hypertension, mitral stenosis, severe asthma, glaucoma, sickle cell anemia and hypotension), * history or evidence of thromboembolism, cardiovascular disease or liver disease, hemoglobin ≤ 90 g/l, heavy smoking (more than 10 per day), * presence of an intrauterine device, and breastfeeding. * Other exclusion criteria included participants who had EC failure because incorrect use, for example, having further unprotected intercourse after EC.