Yunshan Zhang
ORCID: 0000-0002-0134-568X
· 12 papers in corpus
observational
2026
BACKGROUND: After early pregnancy loss (EPL), couples often seek counselling on how long to wait before attempting to conceive again. However, the optimal interpregnancy interval (IPI) between EPL and the next pregnancy is controversial. Ad…
case-report
2025
Abstract Background : Incarcerated gravid uterus (IGU), which is characterized by entrapment of the retroverted uterus within the pelvis during the gestational period, is an uncommon condition but might potentially lead to serious mater…
other
2025
This study aims to investigate the follicle microenvironment of individuals with premature ovarian insufficiency (POI), normal ovarian reserve (normal), and advanced maternal age (AMA), and identify potential therapeutic targets. A total of…
other
2024
PURPOSE: To investigate the follicle microenvironments of women with premature ovarian insufficiency (POI), with normal ovarian reserve function, and who are older (age >40 years) and to identify potential therapeutic targets. PATIENTS AND…
other
2023
Background: Diminished ovarian reserve is one of the most important causes of female infertility. In the etiology study of DOR, besides age, it is known that chromosomal abnormality, radiotherapy, chemotherapy and ovarian surgery can result…
observational
2022
BACKGROUP: Frozen-thawed embryo transfer is rising worldwide. One adverse effect of programmed frozen embryo transfer (FET) reported in some studies is an increased risk of adverse obstetric and perinatal outcomes. Meanwhile, body mass inde…
rct
2022
BACKGROUND: To compare the efficacy and safety of follitropin delta in its individualized fixed-dose regimen with follitropin alfa in a conventional adjustable dosing regimen in Chinese women. METHODS: This was a subgroup analysis of the r…
observational
2022
BACKGROUND: Due to various iatrogenic and social factors, the global caesarean delivery (CD) rate has risen sharply in the past 30 years. It is more complicated and dangerous for women with a scarred uterus to experience pregnancy again tha…
observational
2022
BACKGROUND: Anti-Müllerian hormone (AMH) is used as a biomarker to estimate ovarian reserve. The relationship between AMH and early miscarriage of in vitro fertilization (IVF) is still inconclusive. This study aimed to explore whether serum…
rct
2021
STUDY QUESTION: Is ovarian stimulation with follitropin delta in its individualised fixed-dose regimen at least as efficacious as follitropin alfa in a conventional dosing regimen in Asian population? SUMMARY ANSWER: Ovarian stimulation wi…
observational
2021
BACKGROUND: Caesarean section rates are rising worldwide. One adverse effect of caesarean section reported in some studies is an increased risk of subfertility. Only a few studies have assessed the relationship between the previous mode of …
observational
2021
BACKGROUND: With the development of embryo freezing and warming technology, frozen-thawed embryo transfer (FET) has been widely utilized. However, studies investigating the association between cryopreservation duration and FET outcomes are …