Article
Obstetrics & Gynecology
Georgina M. Chambers, Silke Dyer, Fernando Zegers-Hochschild, Jacques de Mouzon, Osamu Ishihara, Manish Banker, Ragaa Mansour, Markus S. Kupka, G. David Adamson
Summary: In 2014, 1.93 million ART cycles were performed in 76 countries, with trends showing increased success rates, frozen embryo transfer cycles, single embryo transfer, and preimplantation genetic testing. Utilization rates and effectiveness of ART continue to improve globally.
HUMAN REPRODUCTION
(2021)
Article
Obstetrics & Gynecology
Manish Banker, Silke Dyer, Georgina M. Chambers, Osamu Ishihara, Markus Kupka, Jacques de Mouzon, Fernando Zegers-Hochschild, G. David Adamson
Summary: The report provides data on the utilization, effectiveness, and safety of assisted reproductive technology (ART) globally in 2013, showing an increase in ART cycles and changes in trends such as a rise in the proportion of older women undergoing non-donor ART. Further efforts are needed to improve the quality and consistency of reporting ART data by registries.
FERTILITY AND STERILITY
(2021)
Article
Endocrinology & Metabolism
Jun Shuai, Qiao-li Chen, Wen-hong Chen, Wei-wei Liu, Guo-ning Huang, Hong Ye
Summary: Maternal age, BMI, number of embryos transferred, and frozen-thawed transfer were identified as independent risk factors for early spontaneous abortion (ESA) in assisted reproductive technology treatment cycles.
FRONTIERS IN ENDOCRINOLOGY
(2022)
Article
Obstetrics & Gynecology
Christos A. Venetis
Summary: Embryo cryopreservation is an important part of ART, and the freeze-all strategy has shown higher live birth rates in high responders. However, there is no significant difference in normal responders. The freeze-all policy reduces the risk of ovarian hyperstimulation syndrome, but both strategies have their own risks and there is no clear safer approach.
HUMAN REPRODUCTION
(2022)
Article
Obstetrics & Gynecology
Xiao Tian, Jing-Yan Song, Zhen-Gao Sun
Summary: The waiting time after a failed fresh embryo transfer does not affect the pregnancy outcomes of the next frozen embryo transfer (FET).
INTERNATIONAL JOURNAL OF GYNECOLOGY & OBSTETRICS
(2021)
Article
Obstetrics & Gynecology
Kai-Lun Hu, Andrew Kawai, Sarah Hunt, Wentao Li, Xiaohong Li, Runjv Zhang, Yanjun Hu, Huijuan Gao, Yimin Zhu, Lanfeng Xing, Ben W. Mol, Dan Zhang, Daniel L. Rolnik
Summary: The study found that in women undergoing IVF/ICSI, an endometrial thickness below 8 mm was associated with increased risk of preterm delivery and low birthweight. Additionally, the impact on other adverse pregnancy outcomes was relatively minor.
REPRODUCTIVE BIOMEDICINE ONLINE
(2021)
Article
Obstetrics & Gynecology
Baydaa Abdulrahim, Graham Scotland, Siladitya Bhattacharya, Abha Maheshwari
Summary: Couples' preferences for fresh embryo transfer versus freezing of all embryos followed by frozen embryo transfer are primarily driven by anticipated chances of live birth, miscarriage, neonatal complications, and costs. The study found that couples strongly preferred any IVF technique that offered an increase in live birth rates and reduced risk of miscarriage and neonatal complications. Older couples appeared to place less emphasis on the risk of neonatal complications than younger couples.
HUMAN REPRODUCTION
(2021)
Review
Medicine, General & Internal
Tjitske Zaat, Miriam Zagers, Femke Mol, Mariette Goddijn, Madelon van Wely, Sebastiaan Mastenbroek
Summary: Based on the study, the 'freeze all' strategy may not have a significant difference compared to the conventional IVF/ICSI strategy in terms of cumulative live birth rate and ongoing pregnancy rate, but may have a lower risk of ovarian hyperstimulation syndrome. However, other risks such as maternal hypertensive disorders of pregnancy and having a large-for-gestational-age baby may increase with the 'freeze all' strategy.
COCHRANE DATABASE OF SYSTEMATIC REVIEWS
(2021)
Article
Reproductive Biology
Ayumi Hasegawa, Keiji Mochida, Shogo Matoba, Kimiko Inoue, Daiki Hama, Masayo Kadota, Noriko Hiraiwa, Atsushi Yoshiki, Atsuo Ogura
Summary: This study developed assisted reproductive technologies for wild-derived Mus spretus mice, enabling efficient production of embryos and successful interspecies embryo transfer into laboratory mice, demonstrating the potential for safe preservation and utilization of strains in research settings.
BIOLOGY OF REPRODUCTION
(2021)
Article
Obstetrics & Gynecology
Pietro Bortoletto, Phillip A. Romanski, Brady I. Magaoay, Zev Rosenwaks, Steven D. Spandorfer
Summary: The timing from oocyte retrieval to frozen embryo transfer in the natural cycle did not significantly impact live birth rate or neonatal outcomes, with preimplantation genetic testing (PGT) being the only factor associated with increased odds of live birth.
FERTILITY AND STERILITY
(2021)
Article
Obstetrics & Gynecology
Bingqian Zhang, Zijing Wang, Kexin Dai, Linlin Cui, Zi-Jiang Chen
Summary: This retrospective cohort study evaluated the long-term cardiometabolic health of offspring conceived by frozen embryo transfer and born to mothers with overweight/obesity. The study found that offspring conceived by frozen embryo transfer from overweight/obese mothers were associated with higher systolic blood pressure and adverse metabolic changes compared to those conceived by fresh embryo transfer. However, in offspring of mothers with normal weight, frozen embryo transfer was associated with lower low-density lipoprotein-cholesterol levels.
FERTILITY AND STERILITY
(2022)
Article
Medicine, General & Internal
Zhijie Hu, Danjun Li, Qiuju Chen, Weiran Chai, Qifeng Lyu, Renfei Cai, Yanping Kuang, Xuefeng Lu
Summary: In this large-sample retrospective study, the incidence of ectopic pregnancy (EP) in frozen embryo transfer (FET) cycles was found to be slightly lower than fresh embryo transfer (ET) cycles, with no significant difference. Among patients undergoing ET cycles, the long agonist protocol was associated with a significantly lower risk of EP compared to the GnRH antagonist protocol.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Obstetrics & Gynecology
Reeva Makhijani, Prachi Godiwala, James Grady, Alicia Christy, Kim Thornton, Daniel Grow, Lawrence Engmann
Summary: This retrospective cohort study aimed to evaluate if racial/ethnic differences persist in pregnancy outcomes in frozen-thawed embryo transfer (FET) cycles. The results showed that Black women had a significantly lower live birth rate and implantation rate, as well as higher clinical loss rate compared to other racial/ethnic groups.
FERTILITY AND STERILITY
(2022)
Article
Medicine, General & Internal
Yao Chen, Jianbo Zhou, Yandong Chen, Jihong Yang, Yingying Hao, Ting Feng, Ruizhi Feng, Yun Qian
Summary: Among women of advanced maternal age, there was no significant difference in live birth rates between frozen embryo transfer and fresh embryo transfer. However, frozen embryo transfer resulted in higher birthweights and a lower incidence of preterm births.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Obstetrics & Gynecology
K. M. Wong, M. van Wely, H. R. Verhoeve, E. M. Kaaijk, F. Mol, F. van der Veen, S. Repping, S. Mastenbroek
Summary: A study in the Netherlands compared the freeze-all strategy with the conventional strategy in IVF treatments, and found that the conventional strategy had a higher cumulative ongoing pregnancy rate per woman. However, further research is needed to determine the efficacy of the freeze-all strategy in different patient subgroups and embryonic development stages, and to weigh the potential benefits and risks for mothers and children.
HUMAN REPRODUCTION
(2021)
Review
Obstetrics & Gynecology
Logan C. Barr, Kiera Liblik, Amer M. Johri, Graeme N. Smith
Summary: Preeclampsia is a hypertensive pregnancy complication that is associated with adverse maternal health outcomes. However, the exact intermediary mechanisms for this association have not been established. This review summarizes the cardiovascular changes associated with prior preeclampsia and explores their potential link to future maternal disease.
AMERICAN JOURNAL OF PERINATOLOGY
(2022)
Letter
Obstetrics & Gynecology
Olga Bougie, Maria P. Velez
AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY
(2022)
Article
Obstetrics & Gynecology
Emma J. Wilson, Jessica Pudwell, Graeme N. Smith
Summary: This study shows the poor outcomes associated with prenatal cannabis use. With the legalization of cannabis in Canada, it is crucial to increase awareness of its effects during pregnancy. The study found a potential knowledge gap among 9%-19% of participants who believed that cannabis posed no harm to pregnant individuals or fetuses. Minor changes could improve the effectiveness of educational resources.
JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA
(2022)
Article
Obstetrics & Gynecology
Valeria Rodriguez, Hossai Furmli, Michael E. Green, Rebecca Griffiths, Jessica Pudwell, Maria P. Velez
Summary: Although immigrant women make up a growing proportion of the Canadian population, there is a lack of information on infertility diagnosis rates in this group. This study found higher rates of infertility consults among refugee and non-refugee immigrant women compared to Canadian-born women, which may be explained by their origin from areas with higher infertility rates or higher levels of stress.
REPRODUCTIVE SCIENCES
(2022)
Article
Obstetrics & Gynecology
Sumaiya Adam, Harold David McIntyre, Kit Ying Tsoi, Anil Kapur, Ronald C. Ma, Stephanie Dias, Pius Okong, Moshe Hod, Liona C. Poon, Graeme N. Smith, Lina Bergman, Esraa Algurjia, Patrick O'Brien, Virna P. Medina, Cynthia Maxwell, Lesley Regan, Mary L. Rosser, Bo Jacobsson, Mark A. Hanson, Sharleen L. O'Reilly, Fionnuala M. McAuliffe
Summary: Gestational diabetes (GDM) affects approximately 17 million pregnancies worldwide. Women with a history of GDM are at a significantly higher risk of developing type 2 diabetes and cardiovascular disease compared to those without prior GDM. Although prevention and delayed progression of GDM to type 2 diabetes is possible, it is not widely practiced. Considering the increasing rates of type 2 diabetes and CVD in women globally, it is crucial to utilize pregnancy as an opportunity for early identification and preventive intervention.
INTERNATIONAL JOURNAL OF GYNECOLOGY & OBSTETRICS
(2023)
Article
Obstetrics & Gynecology
Cynthia Maxwell, Rachelle Shirley, Amy C. O'Higgins, Mary L. Rosser, Patrick O'Brien, Moshe Hod, Sharleen L. O'Reilly, Virna P. Medina, Graeme N. Smith, Mark A. Hanson, Sumaiya Adam, Ronald C. Ma, Anil Kapur, Harold David McIntyre, Bo Jacobsson, Liona C. Poon, Lina Bergman, Lesley Regan, Esraa Algurjia, Fionnuala M. McAuliffe
Summary: Obesity is a chronic, progressive, relapsing, and treatable neurobehavioral disease that affects women's health and requires a focus on optimizing health outcomes rather than weight loss. Appropriate and sensitive language, as well as trauma-informed care, is necessary when discussing obesity.
INTERNATIONAL JOURNAL OF GYNECOLOGY & OBSTETRICS
(2023)
Article
Obstetrics & Gynecology
Liona C. Poon, Long Nguyen-Hoang, Graeme N. Smith, Lina Bergman, Patrick O'Brien, Moshe Hod, Pius Okong, Anil Kapur, Cynthia Maxwell, Harold David McIntyre, Bo Jacobsson, Esraa Algurjia, Mark A. Hanson, Mary L. Rosser, Ronald C. Ma, Sharleen L. O'Reilly, Lesley Regan, Sumaiya Adam, Virna P. Medina, Fionnuala M. McAuliffe
Summary: Hypertensive disorders of pregnancy (HDP) are the leading cause of maternal and perinatal morbidity and mortality, accounting for 16% of maternal deaths in high-income countries and approximately 25% in low- and middle-income countries. HDP increases the risk of future cardiovascular disease. Failure to achieve normal cardiovascular adaptation during pregnancy is associated with the development of HDP. Women with a history of HDP may experience long-term hemodynamic alterations, predisposing them to cardiovascular morbidity and mortality. Therefore, it is crucial to identify underlying cardiovascular risk factors during pregnancy and the postpartum period and develop strategies for lifestyle and therapeutic interventions to reduce the risk of future cardiovascular disease in women with a history of HDP.
INTERNATIONAL JOURNAL OF GYNECOLOGY & OBSTETRICS
(2023)
Article
Obstetrics & Gynecology
Natalie Dayan, Graeme Smith, Atanas Nedelchev, Haim Abenhaim, Richard Brown, Deborah Da Costa, Suhad Ali, Jesseca Perlman, Tuong-Vi Nguyen, Cindy-Lee Dennis, Wael Abdelmageed, Sonia Semenic
Summary: This study aims to test whether a self-efficacy enhancing breastfeeding intervention can improve breastfeeding outcomes and lower postpartum blood pressure in women with hypertensive disorders of pregnancy (HDP). If effective, this enhanced breastfeeding support can be widely implemented in women lactating after HDP.
BMC PREGNANCY AND CHILDBIRTH
(2023)
Article
Obstetrics & Gynecology
Ainsley M. Johnstone, Jessica Pudwell, Christina M. Ackerman-Banks, Lisbet S. Lundsberg, Heather S. Lipkind, Graeme N. Smith
Summary: Patients with a hypertensive disorder of pregnancy are at increased risk of cardiovascular disease postpartum, and high-sensitivity C-reactive protein can be used as a marker to identify this risk. The study found that patients with elevated levels of high-sensitivity C-reactive protein in the postpartum period have a higher risk of metabolic syndrome and cardiovascular disease within 6 to 12 months.
AMERICAN JOURNAL OF OBSTETRICS & GYNECOLOGY MFM
(2023)
Article
Obstetrics & Gynecology
Maria P. Velez, Jonas Shellenberger, Joel G. Ray
Summary: This study evaluated the accuracy of using first-trimester serum hCG for estimating gestational age. The findings showed that while hCG was effective in estimating GA between 4 to 8 weeks gestation, its accuracy significantly decreased after 9 weeks. The study highlights the need for a more accurate method to estimate missing GA in large datasets.
JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA
(2023)
Article
Obstetrics & Gynecology
Christina M. Ackerman-Banks, Jessica Pudwell, Lisbet Lundsberg, Heather S. Lipkind, Graeme N. Smith
Summary: This study aimed to determine if the use of first-degree family history of cardiovascular disease or chronic hypertension could better identify individuals who need postpartum cardiovascular risk screening. The results showed that individuals with a positive family history of chronic hypertension, myocardial infarction, or stroke were more likely to be diagnosed with chronic hypertension and had elevated cardiovascular disease risk.
AMERICAN JOURNAL OF OBSTETRICS & GYNECOLOGY MFM
(2023)
Article
Public, Environmental & Occupational Health
Mandy Fisher, Gina Muckle, Bruce Lanphear, Tye E. Arbuckle, Joseph M. Braun, Angelika Zidek, Maria P. Velez, Nicole Lupien, Stephanie Bastien, Jillian Ashley-Martin, Youssef Oulhote, Michael M. Borghese, Mark Walker, Elizabeth Asztalos, Maryse F. Bouchard, Linda Booij, Mark R. Palmert, Katherine M. Morrison, Elizabeth A. Cummings, Karine Khatchadourian, Constadina Panagiotopoulos, Gord Glendon, Robin Shutt, Ammanie Abdul-Fatah, Kelsey Seal, William D. Fraser
Summary: The MIREC-CD PLUS study is a follow-up study aimed at assessing the potential effects of prenatal exposures on anthropometry and neurodevelopment in early childhood. Preliminary results show that data from close to 900 children are available for analysis. Furthermore, the study will continue to follow the cohort into early adolescence to measure the impact of early life exposures on endocrine and metabolic function (MIREC-ENDO).
PAEDIATRIC AND PERINATAL EPIDEMIOLOGY
(2023)
Letter
Cardiac & Cardiovascular Systems
Graeme N. Smith, Natalie Dayan
EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY
(2023)
Article
Obstetrics & Gynecology
Maria P. Velez, Deshayne B. Fell, Jonas P. Shellenberger, Jeffrey C. Kwong, Joel G. Ray
Summary: This study aims to evaluate the risk of miscarriage following SARS-CoV-2 vaccination, taking into account the competing risk of induced abortion.
BJOG-AN INTERNATIONAL JOURNAL OF OBSTETRICS AND GYNAECOLOGY
(2023)
Article
Oncology
Moira Rushton, Jessica Pudwell, Xuejiao Wei, Madeleine Powell, Harriet Richardson, Maria P. P. Velez
Summary: This study examined the impact of breast cancer diagnosis and treatment on fertility outcomes through a population-based retrospective matched-cohort design. The results suggest that young breast cancer survivors are at an increased risk of infertility and premature ovarian insufficiency, regardless of chemotherapy treatment.