Nir Kugelman

ORCID: 0000-0002-2473-7408 · 10 papers in corpus
observational 2026
International journal of women's health ·doi:10.2147/ijwh.s575181

PURPOSE: We aimed to study the correlation between umbilical cord anti-mullerian hormone (AMH) levels and neonatal birth weight as well as the correlation between maternal and neonatal AMH levels. PATIENTS AND METHODS: A prospective observ…

observational 2026
International Journal of Gynecology & Obstetrics ·doi:10.1002/ijgo.71186

OBJECTIVE: To examine the effect of controlled ovarian stimulation (COS) protocol on follicular synchrony in a subsequent in vitro fertilization (IVF) cycle in patients whose previous cycle was canceled due to asynchrony. METHODS: A single…

observational 2025
Journal of assisted reproduction and genetics ·doi:10.1007/s10815-025-03601-7

PURPOSE: To evaluate the impact of trigger types in Gonadotropin-releasing hormone (GnRH) antagonist IVF-ICSI cycles on embryo morphokinetics and top-quality embryo production. METHODS: Retrospective cohort study of GnRH-antagonist IVF-ICS…

observational 2025
BMC pregnancy and childbirth ·doi:10.1186/s12884-025-08125-7

BACKGROUND: Congenital uterine anomalies are associated with adverse reproductive outcomes, yet the impact of the arcuate uterus remains unclear due to limited sample sizes and inconsistent findings in previous studies. We utilized a large …

observational 2025
Journal of assisted reproduction and genetics ·doi:10.1007/s10815-025-03556-9

PURPOSE: While breastfeeding is known to impact unassisted conception, its effect on fertility treatment outcomes remains unclear. This study aimed to evaluate the effect of breastfeeding on in-vitro fertilization (IVF) frozen embryo transf…

observational 2024
Journal of the Turkish German Gynecological Association ·doi:10.4274/jtgga.galenos.2024.2024-2-9

OBJECTIVE: To assess the influence of basal serum levels of luteinizing hormone (LH), total testosterone (TT), and free testosterone (FT) on in vitro fertilization (IVF) success rates in patients with polycystic ovary syndrome (PCOS). MATE…

observational 2024
International Journal of Gynecology & Obstetrics ·doi:10.1002/ijgo.15162

OBJECTIVE: To describe outcomes of expectant management (EM) versus methotrexate (MTX) treatment in tubal pregnancies with pretreatment human chorionic gonadotropin (hCG) less than 2000 mIU/mL. METHODS: This retrospective cohort from two t…

observational 2024
International Journal of Gynecology & Obstetrics ·doi:10.1002/ijgo.15498

OBJECTIVE: To identify risk factors for readmission following methotrexate treatment for tubal pregnancy. METHODS: A retrospective study undertaken in two tertiary medical centers, including all individuals with medically treated tubal pre…

observational 2022
·doi:10.1093/humrep/deac107.309

Abstract Study question Does endometriosis affect embryo quality assessed by a time-lapse morphokinetic model analysis? Summary answer Endometriosis does not seem to have a negative effect on embryo morphokinetics and embryo quality assesse…

observational 2021
International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics ·doi:10.1002/ijgo.13633

OBJECTIVE: To evaluate the consequences of COVID-19 pandemic restrictions on the postpartum course. METHODS: A retrospective cross-sectional study compared women who gave birth between March and April 2020 (first wave), between July to Sep…