Background: The failures of medical termination of pregnancy (MToP) can have serious consequences such as exceeding the legal age of abortion and the occurrence of fetal malformations related to the teratogenic action of misoprostol.
Objective: To study the correlation between a low-sensitivity urine pregnancy (LSUP) test associated to a self-performed questionnaire and the standard patient follow-up after MToP, consisting of a clinical examination, a blood hCG test and ultrasonography when needed. Methods: Prospective cohort study included women who came to their post abortion visit after MToP from March to August 2017. They performed a LSUP test and a self-performed questionnaire to assess their opinion on the completion of the abortion. Then a standard follow up was done by a doctor. A successful MToP was defined as a complete uterine abortion, with no the need for surgical intervention or for new abortive medication. Results: 133 women have been included in this study. The rate of successful MToP was 94.0%. Regarding failures there were two ongoing pregnancies (1.5%) and six retained products of conception (4.5%) treated either by a surgical procedure or with a new oral administration of misoprostol. Sensitivity of the womens opinion combined to the LSUP test was 100%, specificity was 89.6%, positive predictive value 38.1%, negative predictive value 100%, a Youden index of 0.89 and a kappa coefficient of 0.51. Conclusion: Given the extremely high efficacy of MToP, most women do not need a clinical follow-up to confirm pregnancy termination. Our data show that most women can ascertain their abortion outcome using a simple self-administrated questionnaire and a LSUP test.