The study compares serum progesterone levels on transfer day among three methods of endometrial preparation for frozen embryo transfer (FET): spontaneous cycles, ovarian stimulation cycles, and artificial cycles.
Results showed that the ovarian stimulation group had significantly higher progesterone levels (29.47 ng/ml) compared to spontaneous (20.03 ng/ml) and artificial cycles (14.32 ng/ml), indicating a possible link to treatment methods.
Despite differences in progesterone levels, demographic factors and overall pregnancy outcomes (live birth rates and pregnancy loss rates) were largely similar across all three groups, suggesting further research is needed to assess the clinical implications of progesterone variations.
The pandemic has led to ART centers temporarily halting activities in March 2020, prompting a reevaluation of how COVID-19 impacts reproduction.
Research continues to explore how the virus affects gametes, fertility, and pregnancy, with mixed findings regarding female gametes and potential neonatal health threats.
While men may face more severe symptoms and potential impacts on sperm production, the overall effects of COVID-19 on ART practices require further investigation.