Embryo Project Encyclopedia

In the 1971 court case United States v. Milan Vuitch, hereafter US v. Vuitch, the US Supreme Court ruled that a Washington, DC law was constitutional by overturning a 1969 district court decision. Beginning in the early twentieth century, Washington, DC, prohibited abortions except for abortions performed to preserve the life or health of the pregnant woman. In 1969, Milan Vuitch, a physician in Washington, DC, was convicted of criminal abortion for providing an abortion when the woman’s life was not endangered. In his defense, Vuitch argued that the Washington abortion law was unconstitutionally vague, meaning it failed to define health in terms clear enough so that doctors could be sure what actions violated the law. Though a lower district court agreed with Vuitch and struck down the law as unconstitutional, the Supreme Court later disagreed and overturned the decision. US v. Vuitch was one of the first US Supreme Court cases that challenged the constitutional validity of laws regulating abortion and set a precedent that helped determine future abortion cases, like Roe v. Wade in 1973, which made abortions more accessible and gave women more control over their bodies.

Sir Graham Collingwood Liggins devoted much of his professional life to obstetric research. Liggins demonstrated that hormones created by the fetus helped initiate labor, rather than hormones originating solely from the mother. Liggins also discovered that cortisol given to pregnant mothers helped delay premature labor, and that it increased the likelihood that premature infants would breathe normally after birth. Prior to cortisol treatment, premature infants often died of respiratory distress syndrome characterized by the inability to inflate immature lungs. Before the clinical application of Liggins' discoveries in the 1980s, premature infants born before 32 weeks of gestation generally died because of respiratory distress.

In 2000, Catherine Monk, William Fifer, Michael Myers, Richard Sloan, Leslie Trien, and Alicia Hurtado published “Maternal stress responses and anxiety during pregnancy: Effects on fetal heart rate,” in which the authors conducted a study on how pregnant women’s stress and anxiety affects the health of their fetuses. Previous studies had shown that stress and anxiety during pregnancy could cause fetal abnormalities. In their article, Monk and colleagues reported that the fetuses of anxious pregnant women were more likely to have elevated heart rates and increased stress when exposed to stressors than fetuses of non-anxious women. The authors’ findings indicated that fetuses of anxious women display more biological markers of stress than fetuses of non-anxious women.

In 1999, Joseph Bruner, Susan B. Drummond, Anna L. Meenan, and Ina May Gaskin published, “All-fours Maneuver for Reducing Shoulder Dystocia During Labor,” in the medical journal, Obstetrical and Gynecological Survey. In the article, the authors described a birthing technique named the all-fours maneuver, or the Gaskin maneuver, and explained its effectiveness in treating fetal shoulder dystocia as compared to other maneuvers. Shoulder dystocia occurs when the neonate’s head has exited the vaginal canal, but the shoulders get stuck behind the woman’s pelvic bone, which prevents the birth of the neonate’s body. Healthcare practitioners’ use of previous methods to dislodge the fetal shoulders sometimes resulted in fetal and maternal injury. The all-fours maneuver differed from previous methods by positioning the laboring woman on her hands and knees rather than on her back. Through the article, the authors established the all-fours maneuver as a safe, fast, and effective technique for reducing shoulder dystocia.

The US Supreme Court case Ferguson v. City of Charleston (2001) established that public hospitals couldn't legally drug test pregnant women without their consent when those women sought prenatal care at those hospitals. The court held that such searches violated the pregnant women's protections under the Fourth Amendment to the US Constitution. The decisions also indicated those circumstances that qualified as special needs exceptions to the Fourth Amendment, and it highlighted the extent to which pregnant women are sovereign individuals in the eyes of the Court. Ferguson v. City of Charleston brought public attention to women's reproductive rights and to fetal rights.

During the twentieth century, Thomas Raphael Verny studied the way that environment affects a developing fetus’s character and psychological development. Verny studied the concept of memory before birth and covered both the prenatal and perinatal periods, meaning the time the fetus is in the womb and the weeks immediately before or after birth, respectively. During those times, Verny claimed that patterns of maternal attitudes and experiences, such as affection and stress-related emotions, impact the development of the child. Published in 1981, Verny’s book The Secret Life of the Unborn Child presented novel ideas about how pregnant women’s emotional health impacts the psychological, emotional, and physical development of their fetuses, sparking discussion about the importance of maternal emotional health during prenatal development.

The Silent Scream is an anti-abortion film released in 1984 by American Portrait Films, then based in Brunswick, Ohio. The film was created and narrated by Bernard Nathanson, an obstetrician and gynecologist from New York, and it was produced by Crusade for Life, an evangelical anti-abortion organization. In the video, Nathanson narrates ultrasound footage of an abortion of a twelve-week-old fetus, claiming that the fetus opened its mouth in what Nathanson calls a silent scream during the procedure. As a result of Nathanson's anti-abortion stance in the film, The Silent Scream contributed to the abortion debate in the 1980s.

Implantation is a process in which a developing embryo, moving as a blastocyst through a uterus, makes contact with the uterine wall and remains attached to it until birth. The lining of the uterus (endometrium) prepares for the developing blastocyst to attach to it via many internal changes. Without these changes implantation will not occur, and the embryo sloughs off during menstruation. Such implantation is unique to mammals, but not all mammals exhibit it. Furthermore, of those mammals that exhibit implantation, the process differs in many respects between those mammals in which the females have estrous cycles, and those mammals in which the femals have menstrual cycles. Females in the different species of primates, including humans, have menstrual cycles, and thus similar processes of implantation.

In 1987, the World Health Organization, or WHO, took action to improve the quality of maternal health around the world through the declaration of the Safe Motherhood Initiative, or the SMI, at an international conference concerning maternal mortality in Nairobi, Kenya. Initially, the SMI aimed to reduce the prevalence of maternal mortality around the world, as over 500,000 women died during pregnancy and childbirth annually at the time of its inception, while about 98 percent of those deaths occurred in low-income countries. While WHO led the initiative, many organizations in various countries participated in additional programs in order to implement the goals of the SMI. WHO developed the SMI in order to reduce the prevalence of maternal death, developing one of the first proposals that brought attention to maternal health on a global basis at a time when global maternal mortality was high.