Induction of Abortion in the Second Trimester by Misoprostol or Misoprostol with Letrozole
Abstract Background Abortion is the termination of pregnancy by any means (surgical or medical) before the age of viability. The definition varies in duration of gestational age according to the countries and available facilities. Estrogen is important in the maintenance of pregnancy. Aromatase inhibitors such as letrozole, suppress the peripheral conversion of androgen to estrogen, the use of letrozole combined with vaginal misoprostol was more effective than misoprostol alone in termination of pregnancy. Objective Assessing the efficacy of addition of letrozole to Misoprostol in medically induced abortion in the second trimester of pregnancy in the Maternity hospital of Ain Shams University. Methods This clinical trial was conducted at Ain Shams University Maternity hospital in the period between December 2018 and May 2019. Patients that seem to be fulfilling the inclusion criteria were recruited, then informed written consent was taken from every patient before starting the examination That was followed by detailed history and examination of all patients to confirm fulfilling the inclusion and exclusion criteria. Results This study demonstrated that 10 mg letrozole for three days followed by 800 mcg of vaginal misoprostol is more effective than misoprostol alone for second trimester abortion. In the total of 72 women were recruited the complete abortion rate of the letrozole group was significantly higher than that of the control group (61,1% in the letrozole group compared with 33,3% in the control group). Conclusion s: The use of letrozole in addition to misoprostol was associated with a higher complete abortion rate, shorter induction to abortion interval and shorter curettage rates compared to a placebo followed by misoprostol in patients undergoing induction of abortion between 12 & 24 weeks gestation.