The impact of reference growth standards on small- and large-for-gestational age outcomes among pregnancies conceived by fresh and frozen embryo transfers.

Objective: To describe differences in the frequency of small-for-gestational age (SGA) and large-for-gestational age (LGA) driven by different birth weight curves in assisted reproductive technology (ART)-conceived pregnancies.

Design: Retrospective cohort study.

Setting: Single academic medical center.

Association between low fetal fraction and hypertensive disorders of pregnancy in in vitro fertilization-conceived pregnancies.

Background: Fetal fraction from noninvasive prenatal screening has been used as a predictive marker for hypertensive disorders of pregnancy in spontaneous pregnancies.

Objective: We aimed to determine whether fetal fraction from noninvasive prenatal screening predicts hypertensive disorders of pregnancy in pregnancies conceived by assisted reproductive technology, stratified by fresh and frozen embryo transfer.

Study Design: Retrospective cohort study of women with singleton pregnancies who underwent fresh or frozen embryo transfer, had noninvasive prenatal screening, and had a live birth >20 weeks at a single institution from 2013 to 2019.

Clinical implications of telemedicine for providers and patients.

The coronavirus disease 2019 (COVID-19) pandemic has resulted in paradigm shifts in the delivery of health care. Lockdowns, quarantines, and local mandates forced many physician practices around the United States to move to remote patient visits and adoption of telemedicine. This has several long-term implications in the future practice of medicine.

Oocyte donation: insights gleaned and future challenges.

With the first successful report of an IVF pregnancy achieved via donor oocytes in 1984, the applications of assisted reproductive technology (ART) were further expanded to include women unable to conceive with their own oocytes. Today, oocyte donation makes up an increasingly large percentage of all ART cycles worldwide. Oocyte donation presents several unique challenges to clinicians as two separate interests, those of the donor and those of the recipient, must be represented.

One thousand seventy-eight autologous IVF cycles in women 45 years and older: the largest single-center cohort to date.

Purpose: The purpose of this study was to determine IVF outcomes in women 45 years and older using autologous oocytes.

Methods: This is a retrospective cohort study reviewing all IVF cycles in women ≥ 45 years old from January 1995 to June 2015 that were conducted at one academic medical center. One thousand seventy-eight fresh, autologous IVF cycles met inclusion criteria.

Replacing single frozen-thawed euploid embryos in a natural cycle in ovulatory women may increase live birth rates compared to medicated cycles in anovulatory women.

Purpose: The goal of this study was to compare pregnancy outcomes between natural frozen embryo transfer (FET) cycles in ovulatory women and programmed FET cycles in anovulatory women after undergoing in vitro fertilization with preimplantation genetic screening (IVF-PGS).

Methods: This was a retrospective cohort study performed at an academic medical center. Patients undergoing single FET IVF-PGS cycles between October 2011 and December 2014 were included.

Sliding scale HCG trigger yields equivalent pregnancy outcomes and reduces ovarian hyperstimulation syndrome: Analysis of 10,427 IVF-ICSI cycles.

Objective: To evaluate pregnancy outcomes and the incidence of ovarian hyperstimulation syndrome (OHSS) using a sliding scale hCG protocol to trigger oocyte maturity and establish a threshold level of serum b-hCG associated with optimal oocyte maturity.

Design: Retrospective cohort.

Setting: Academic medical center.

Morphologic grading of euploid blastocysts influences implantation and ongoing pregnancy rates.

Objective: To determine whether blastocyst grading can predict pregnancy outcomes in the frozen-thawed embryo transfer (FET) of euploid blastocysts.

Design: Retrospective cohort study.

Setting: Academic medical center.

Spontaneous bilateral torsion of fallopian tubes presenting as primary infertility.

Unlabelled: Case presented at "Stump the Professors" 44th American Association of Gynecologic Laparoscopists Global Congress on Minimally Invasive Gynecology, NV, USA, 15-19 November 2015 BACKGROUND: Spontaneous torsion of the fallopian tubes is a rare condition, usually seen in acute settings or as incidental findings during laparoscopy.

Presentation Of The Case: A 34-year-old nulligravid woman with inability to conceive for 7 months presented to our center. Her hysterosalpingography revealed a blind-ending right fallopian tube, and a blocked and dilated left fallopian tube.

Preimplantation genetic screening: who benefits?

Objective: To compare IVF outcomes between women undergoing frozen transfers of blastocysts verified as euploid by preimplantation genetic screening (PGS) with patients undergoing fresh nonbiopsied blastocyst transfers.

Design: Retrospective cohort study.

Setting: Academic medical center.

How low is too low? Cycle day 28 estradiol levels and pregnancy outcomes.

Objective: To determine the utility of cycle day 28 estradiol (E2) levels in predicting pregnancy outcomes after IVF.

Design: Retrospective, cohort study.

Setting: Academic medical center.

Autologous endometrial coculture biopsy: is timing everything?

Objective: To determine whether endometrial biopsy timing affects implantation rates and pregnancy outcomes in patients undergoing in vitro fertilization (IVF) with autologous endometrial coculture (AECC).

Design: Retrospective cohort study.

Setting: Academic medical center.

Prognostic value of growth of 4-cell embryos on the day of transfer in fresh IVF-ET cycles.

Purpose: To investigate the prognostic value of growth of 4-cell embryos on the day of transfer in determining clinical pregnancy and live birth rates after fresh in vitro fertilization (IVF)-embryo transfer (ET) cycles.

Methods: Retrospective cohort study of all patients between January 2008 and January 2013 initiating fresh IVF-ET cycles resulting in embryos that were not more than 4 cells 72 h after oocyte retrieval in the morning of their transfer. Patients were stratified into 2 groups based on whether embryos did or did not grow more than the 4-cell stage on the afternoon of ET.