Factors associated with the incidence of ectopic pregnancy in women undergoing assisted reproductive treatment.

Background: Ectopic pregnancy (EP) is a common complication in women undergoing assisted reproductive treatment, but the underlying causes for this remain unclear. This study aimed to explore factors affecting the incidence of EP in in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI).

Methods: This was a retrospective study on the incidence of EP in IVF/ICSI cycles between January 1, 2013 and December 31, 2017.

Randomized, controlled trial comparing the efficacy of intrauterine balloon and intrauterine contraceptive device in the prevention of adhesion reformation after hysteroscopic adhesiolysis.

Objective: To compare the efficacy of heart-shaped intrauterine balloon and intrauterine contraceptive device (IUD) in the prevention of adhesion reformation after hysteroscopic adhesiolysis.

Design: Prospective, randomized, controlled trial.

Setting: University hospital.

[Effects of early intervention of second-look office hysteroscopy in the prevention of adhesion reformation for moderate-severe Asherman's syndrome].

Objective: To compare the efficacy of different time interval in the prevention of adhesion reformation after hysteroscopic adhesiolysis for moderate-severe Asherman's syndrome.

Methods: A total of 125 women with moderate-severe Asherman's syndrome undergoing hysteroscopic division of intrauterine adhesion were enrolled into this retrospective cohort study. All patients underwent second-look hysteroscopy after a certain period of the first hysteroscopic adhesiolysis, and the operation would be performed again if any adhesion existed.

Outcome of in vitro fertilization in endometriosis-associated infertility: a 5-year database cohort study.

Background: Endometriosis affects natural fertility through various approaches, and in vitro fertilization (IVF) is a good treatment. But the IVF result of endometriosis patients is still under debate. We investigated the effect of endometriosis on IVF by analyzing the data from a single reproductive center.