Failure Rate of Medical Treatment for Miscarriage Correlated with the Difference between Gestational Age According to Last Menstrual Period and Gestational Size Calculated via Ultrasound

Objective: To study whether the interval between gestational age calculated using last menstrual period (GA-LMP) and via ultrasound (GA-US) is correlated with success rate of medical treatment in cases miscarriages. Methods: This was a retrospective cohort conducted gynecology unit tertiary center. Women who underwent Misoprostol for miscarriage at Edith Wolfson Medical Center 07/2015 12/2020 were included. Incomplete or septic miscarriages, multiple pregnancies, patients irregular periods, missing data excluded. Failure defined as need surgical intervention due to retained sac, severe bleeding products conception. The divided into two groups: successful whom eventually needed. We performed both univariate multivariate analysis order identify correlation GA-LMP GA-US indeed factor abortion. Results: Overall, 778 included study. From this 582 (74.9%) had undergone treatment, while 196 (25.1%) required failure above. (in weeks) 2.6 ± 1.4 group, GA group 3.1 1.6 (p < 0.001). After performing multivariant regression analysis, we able show that found be independently an increase (aOR = 1.24, CI 95% (1.01–1.51), p 0.03). Conclusions: In miscarriage, longer has been shown lower option.