In this issue of Obstetrics and Gynecology Clinics of North America, guest editor Dr. Sharon T. Phelan brings her considerable expertise to the topic of Prenatal Care. Prenatal care can help prevent complications and inform women about important steps they can take to protect their infant and ensure a healthy pregnancy. This issue not only provides timely updates but also touches on current issues in this fast-changing field, including social determinants of health care, health care disparities, and advocacy for the underserved pregnant patient. - Contains 15 practice-oriented topics including updates in genetic testing for the general obstetrician; updates on evaluation and treatment of common complaints in pregnancy; social determinants of health and health care disparities; updates in mental health care in the prenatal patient; health advocacy for the underserved pregnant patient; and more. - Provides in-depth clinical reviews of prenatal care, offering actionable insights for clinical practice. - Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.

In this issue of Obstetrics and Gynecology Clinics of North America, guest editor Dr. Sharon T. Phelan brings her considerable expertise to the topic of Prenatal Care. Prenatal care can help prevent complications and inform women about important steps they can take to protect their infant and ensure a healthy pregnancy. This issue not only provides timely updates but also touches on current issues in this fast-changing field, including social determinants of health care, health care disparities, and advocacy for the underserved pregnant patient. Contains 15 practice-oriented topics including updates in genetic testing for the general obstetrician; updates on evaluation and treatment of common complaints in pregnancy; social determinants of health and health care disparities; updates in mental health care in the prenatal patient; health advocacy for the underserved pregnant patient; and more. Provides in-depth clinical reviews of prenatal care, offering actionable insights for clinical practice. Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.

The delivery of high quality and equitable care for both mothers and newborns is complex and requires efforts across many sectors. The United States spends more on childbirth than any other country in the world, yet outcomes are worse than other high-resource countries, and even worse for Black and Native American women. There are a variety of factors that influence childbirth, including social determinants such as income, educational levels, access to care, financing, transportation, structural racism and geographic variability in birth settings. It is important to reevaluate the United States' approach to maternal and newborn care through the lens of these factors across multiple disciplines. Birth Settings in America: Outcomes, Quality, Access, and Choice reviews and evaluates maternal and newborn care in the United States, the epidemiology of social and clinical risks in pregnancy and childbirth, birth settings research, and access to and choice of birth settings.

Children are the foundation of the United States, and supporting them is a key component of building a successful future. However, millions of children face health inequities that compromise their development, well-being, and long-term outcomes, despite substantial scientific evidence about how those adversities contribute to poor health. Advancements in neurobiological and socio-behavioral science show that critical biological systems develop in the prenatal through early childhood periods, and neurobiological development is extremely responsive to environmental influences during these stages. Consequently, social, economic, cultural, and environmental factors significantly affect a child's health ecosystem and ability to thrive throughout adulthood. Vibrant and Healthy Kids: Aligning Science, Practice, and Policy to Advance Health Equity builds upon and updates research from Communities in Action: Pathways to Health Equity (2017) and From Neurons to Neighborhoods: The Science of Early Childhood Development (2000). This report provides a brief overview of stressors that affect childhood development and health, a framework for applying current brain and development science to the real world, a roadmap for implementing tailored interventions, and recommendations about improving systems to better align with our understanding of the significant impact of health equity.

Genetic Screening and Counseling is reviewed in this issue of Obstetrics and Gynecology Clinics, guest edited by Drs. Anthony R. Gregg and Joe Leigh Simpson. Authorities in the field have come together to pen articles on Contemporary Genetics Counseling: New Frontiers and Challenges, Newborn Screening, SMA Carrier Screening, Fragile X, Ashkenazi Jewish Screening in the 21st Century, Thrombophilia in Obstetric Practice, Microarrays in the Practice of Obstetrics and Gynecology, Cancer Genetic Screening, and Cystic Fibrosis.

This issue of the Obstetrics and Gynecology Clinics in North America will focus on the advances in the evaluation and management of Recurrent Pregnancy Loss (RPL) that have emerged within the last few years. Although spontaneous pregnancy loss occurs in approximately 15% to 20% of clinically recognized pregnancies in reproductive-aged women, RPL occurs in 2% to 5% of the same population. Recent reports on large populations of women with RPL have helped to characterize the incidence and diversity of this heterogeneous disorder, and a definite cause of pregnancy loss can be established on over 50% of all couples after a thorough evaluation. New diagnostic strategies, which include 23-chromosome microarray genetic testing of the products of conception in failed pregnancies, offer the promise of understanding the cause of most pregnancy losses. These recent advances, combined with the contributions from the authors in this issue of Clinics and many others interested in this field, lead to the publication of the long-awaited publication on evaluation and treatment of RPL from the Practice Committee of the American Society for Reproductive Medicine. A complete evaluation will include investigations into genetic, anatomic, immunologic, endocrinologic, and iatrogenic factors.

The evaluation of reproductive, maternal, newborn, and child health (RMNCH) by the Disease Control Priorities, Third Edition (DCP3) focuses on maternal conditions, childhood illness, and malnutrition. Specifically, the chapters address acute illness and undernutrition in children, principally under age 5. It also covers maternal mortality, morbidity, stillbirth, and influences to pregnancy and pre-pregnancy. Volume 3 focuses on developments since the publication of DCP2 and will also include the transition to older childhood, in particular, the overlap and commonality with the child development volume. The DCP3 evaluation of these conditions produced three key findings: 1. There is significant difficulty in measuring the burden of key conditions such as unintended pregnancy, unsafe abortion, nonsexually transmitted infections, infertility, and violence against women. 2. Investments in the continuum of care can have significant returns for improved and equitable access, health, poverty, and health systems. 3. There is a large difference in how RMNCH conditions affect different income groups; investments in RMNCH can lessen the disparity in terms of both health and financial risk.