Over the past decade, the application of frozen-thawed embryo transfer treatment cycles has
increased substantially. Hormone replacement therapy and the natural cycle are two …

Infertility affects one in six couples, with in vitro fertilization (IVF) offering many the chance of
conception. Compared to the solitary oocyte produced during the natural menstrual cycle …

Importance The necessity of progesterone supplementation for luteal phase support (LPS) in
natural cycle frozen embryo transfer (NC-FET) cycles warrants further confirmation …

Purpose To evaluate the role of serum progesterone (P4) on the day of embryo transfer (ET)
when dydrogesterone (DYD) and micronized vaginal progesterone (MVP) are combined as …

Research question Does additional supplementation with oral dydrogesterone improve
reproductive outcomes in patients with low serum progesterone concentrations on the day of …

Chitosan-based hydrogels possess numerous advantages, such as biocompatibility and
non-toxicity, and it is considered a proper material to be used in biomedical and …

STUDY QUESTION Are there any differences in physical and psychosocial well-being
among women undergoing modified natural cycle frozen embryo transfer (mNC-FET) with or …

Background The serum P concentrations are suggested to have an impact on pregnancy
outcome. However there is no consensus about the optimal progesterone cut-off during the …

Study objective The absence of corpus lutea in artificial cycle (AC) frozen embryo transfers
(FET) may increase the chances of pregnancy loss. In this retrospective cohort study, the …

The artificial cycle offers scheduling advantages, but may compromise obstetric outcomes.
Natural FET relies on accurate ovulation timing for successful implantation. mNC-FET …