Uterine Artery Doppler Indices: Pulsatility Index and Resistance Index as Predictive Tools to Menstrual Changes Related to Levonorgestrel Intrauterine System versus Copper Intrauterine Contraceptive Device Among Egyptian Women: A Cohort Study

Objective . This study aims to assess the predictive value of the uterine artery Doppler indices (pulsatility and resistance) using transvaginal ultrasound following the insertion of an intrauterine device (IUD), either the levonorgestrel intrauterine system (LNG-IUS) or the Cu-IUD and to correlate the findings of the impedance indices to the changes in the menstrual pattern. Materials and Methods . A prospective cohort study was conducted between March 2019 and March 2021 that included healthy women who visited our family planning clinic and were willing to use an intrauterine contraceptive device. Of the 365 women who initially opted for this contraceptive method, 340 were enrolled. The participants were divided into two groups: (LNG-IUS) group, LNG-IUS users; (Cu-IUD) group, Cu-IUD users. The decision was made based on the women's clinical circumstances