Abstract
The study aimed to determine whether the presence of subtle endometrial abnormalities discovered by office hysteroscopy (OH) affects the pregnancy rate in fresh intracytoplasmic sperm injection (ICSI) cycles. A prospective cohort study included women undergoing their first ICSI cycles was performed in assisted reproductive technology unit. Patients were divided into two groups: patients with subtle endometrial abnormalities diagnosed by OH (group 1, n=78), and patients with normal uterine cavity (group 2, n=122). OH was conducted post-menstrual and subtle abnormalities detected included hypervascularization, petechiae, mucosal elevation, micropolyps, pale endometrium and single adhesion band. The main outcome measures were clinical pregnancy and implantation rates The most common subtle abnormality observed was pale endometrium in 35.9% of cases. Both groups were comparable regarding the baseline clinical data and endometrial thickness. Additionally, total amount of gonadotrophins used, duration of stimulation, peak estradiol concentrations, peak endometrial thickness, number of mature follicles and number of embryos transferred were not significantly different between both groups. The implantation rate was similar in both groups (2.35 ± 0.83 vs. 2.22 ± 0.84, p=0.465). Also, the pregnancy rate was similar in both groups (38.5% vs. 33.6%, p=0.067) Subtle endometrial abnormalities diagnosed by OH do not negatively affect pregnancy and implantation outcomes in fresh ICSI cycles.
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