Subsequent placenta accreta after previous mifepristone-induced abortion: A case report

Table 1 Studies of estrogen administration following mifepristone-induced abortion

Ref.	Hormone regimen	Dose	Duration
Martin et al[12], 1988	Post-operation, oral contraceptive	Ethinyl oestradiol 30 µg; levonorgestrel 150 µg	Start on the day of abortion, daily for 21 d
Tang et al[13], 2002	Post-operation, oral contraceptive	Ethinyl oestradiol 30 µg; levonorgestrel 150 µg	Start 1 d after the administration of misoprostol, daily for 21 d
Liu et al[14], 2006	Post-operation, estrogenic supplementation	Oestradiol valerate 1mg	Start 1 d after abortion, daily for 14-18 d
Wang et al[15], 2011	Post-operation, oestrogenic-progesterone sequential administration	Oestradiol valerate 2 mg; Medroxyprogesterone 10 mg	Oestradiol valerate, start 1 d after abortion, daily for 21 d; Medroxyprogesterone, daily for the last 5 d
Farhi et al[16], 1993	Post-operation, oestrogenic-progesterone sequential administration	Oestradiol valerate 2 mg; Norgestrel 0.5 mg	Oestradiol valerate, start 1 d after abortion, daily for 21 d; Norgestrel, daily for the last 10 d
Luo et al[17], 2012	Pre-operation, oestrogen supplementation	Oestradiol valerate 5 mg	Oestradiol valerate, daily for 3 d before abortion