The Psycho-Technology of Pregnancy and Labor
IntroductionCouples and their friends who desire a more personal birth experience than a hospital normally allows often cast obstetrical nurses and doctors in the role of insensitive professionals. Nurses and doctors tend to feel resentful when confronted by women with a shopping list of demands, yet their professional roles do not allow them to show their annoyance. What do they do with these feelings? Often, because one cannot predict how many women will be in labor at any one time, a situation in which too few nurses are treating too many patients will develop. Under such circumstances, they may have their hands full just making sure nobody dies and, much as they would like to, are unable to meet the emotional needs of the laboring woman. Thus the medical staff is frequently assigned the part of "heavies" in accounts of birthing practices. Speaking from firsthand experience as a clinician, I know that under the insistent demands of a busy work week I sometimes tend to act more like a fireman rushing from one fire to the next than a physician who stops long enough to really see and hear his patient. I think all health professionals should get sick once every two years and be hospitalized at least once every decade to appreciate fully better what it is like to be a patient. Though I say this tongue in cheek, I do believe that all of us need to be reminded occasionally that patients are people and that their emotions will affect all their bodily functions. This article is concerned with two themes: the hospitalization of birth and the increasing use of and reliance on technological devices as diagnostic tools during pregnancy and labor. It will explore the physiological and psychological effects of these procedures on the pregnant woman, her unborn or newborn baby, and the hospital staff.
The Hospitalization of BirthDuring the last 100 years, birthing has moved from the home into the hospital. The home is the domain of the family; the hospital is run by doctors and nurses. Doctors and nurses are trained to treat sick people, and hospitals admit only very sick people for treatment, surgery and special investigations. Consequently, anyone who occupies a hospital bed will likely be regarded by the staff as an ill patient. In this simple way, without anyone giving it much thought and with the best of intentions by health professionals, the natural process of birth has been transformed into a major disease. What are the consequences of this hospitalization of birth for the pregnant woman?
- She finds herself in an unfamiliar place where she has to obey peculiar rules enforced by strangers.
- Because staff members are experts and she is not, the pregnant woman is made to feel as if others know more about her body than she does.
- Staff members often behave as if her body has become theirs to do with as they please. They give her drugs to swallow, stick needles into her, take blood from her veins and urine from her bladder, measure her blood pressure, subject her to x-rays and so on.
- On admission, the pregnant woman receives a name tag with a number. Then she is asked to disrobe and change into a hospital gown that leaves her totally exposed from the back when she is not lying down. Confined to her room, she has a never-ending stream of nurses, interns, and residents examining her. Her sense of individuality and self-esteem are gradually eroded.
AmniocentesisWhen amniocentesis was introduced in the 1950s it was used to test for Rh-hemolytic disease in the third trimester (6). Today amniocentesis is still employed for that purpose. Prior to introducing the needle, the doctors would palpate the woman's abdomen to determine the baby's position. Some doctors inject a local anesthetic before amniocentesis; others believe that a second needle with an anesthetic is as painful as one needle without an anesthetic. I feel strongly that every woman should be given a choice in this matter instead of having the doctor decide what's good for her. Presently, amniocentesis can also identify over 75 metabolic diseases and about 80 to 90 percent of open neural tube defects (such as spina bifida) in the second trimester of pregnancy (7). An examination of the chromosomes in the fetal cells can reveal the baby's sex. Seven out of ten women are referred for amniocentesis because they are age 35 or older. Most of the others are tested because of a family history of chromosomal aberrations. At age 35, the chances of a woman having a baby with Down's syndrome is 1 in 350; at age 40, the chances increase to 1 in 100; and at age 45, chances are 1 in 32 (8). Complications. Scientists at the Mayo Clinic report that amniocentesis stands a 15% chance of being technically unsatisfactory: the sample of amniotic fluid may be inadequate, the culture may fail to grow, or the laboratory analysis may be wrong (9). In one study, 22 % of specimens were blood tinged to grossly bloody (10). Major complications of amniocentesis include pneumothorax, gangrene of a fetal limb, and sudden fetal death (11-13). A study at the University of California at San Francisco based on 3,000 consecutive cases from 1970 to 1978 found a 1.5 % spontaneous abortion rate before 28 weeks gestation. These investigators "are reasonably certain that a small portion of these losses were directly attributable to the procedure (14). They are also concerned that, as amniocentesis moves from controlled research settings to many hospitals and likely less skilled office practice, the complication rate will increase. Of the fetuses on whom amniocentesis is carried out, 95% are unaffected with the condition for which the test is performed. Parents should balance this information against the known risks of this procedure to their probably well babies (15). So far, there have been only three major studies on the effects of amniocentesis on the mother and her baby (16-18). A fourth is presently taking place in Toronto, and the results will not be known until 1988. A National Institute of Child Health and Development project reported in 1976 that about 2% of women had complications such as vaginal bleeding or amniotic fluid leakage following the procedure. They found no increased risk to mother or child (16). These conclusions were confirmed in a 1980 study in which total fetal mortality was 2.7% among the amniocentesis group compared to 2.2 % in the control group (17). However, a British study sponsored by the Medical Council of Britain concludes that amniocentesis increases the risk of fetal loss and neonatal and obstetrical complications by 1 to 1.5% and by the same amount for certain types of major infant problems. It reports a fetal death rate of 2.6% in the amniocentesis group and 1.1% among the controls. These investigators also found that amniocentesis significantly increases rates of maternal antepartum hemorrhage and neonatal respiratory distress and slightly increases major neonatal orthopedic deformities such as hip malformation (18). In The Secret Life of the Unborn Child, I reported on the case of 16-month-old Claude, who developed severe head and neck spasms and limitations of movement following birth (19). His mother's pregnancy history revealed that she had undergone amniocentesis in her last trimester and that the needle had nicked her baby's neck. This child would shrink away from any bodily contact with his mother, who was as distraught by his apparent fear and avoidance of her as she was by his physical handicap. After six months of psychotherapy as practiced by Anne-Marie Saurel in France, Claude totally recovered both in body and mind (20). Although there are few reports in the scientific literature on this, many obstetricians have told me that under ultrasound they have seen babies move away from the intruding needle or even try to push it aside. Consider for a moment how you would feel if you sensed a sharp object as long as your entire body coming at you and did not know whether it was going to stop short or pierce you. Clinical evidence from observations in my own practice and those of other psychotherapists indicates that the unborn ascribes almost everything that happens to him as originating with his mother. Therefore, the newborn might naturally develop an avoidance or fear of his mother because of the suffering that amniocentesis caused him. Because every pregnancy and birth is accompanied by inevitable stresses, one wonders whether an additional stress which offers no benefit to the newborn is justified. Consider the predicament facing a woman who becomes pregnant at age 42 and desperately wants a child. Knowing that her chances of giving birth to a live child with Down's syndrome are about the same as those of causing a miscarriage by the diagnostic procedure itself, does she refuse the amniocentesis? At medical centers throughout the country, ever-increasing numbers of doctors and their patients have turned to amniocentesis and subsequent abortions to control the gender of the child to be born. Marilyn Pollack at New York's Sloan-Kettering Institute has devised a means for establishing the paternity of the baby through amniocentesis (21). She thinks the technique is warranted only in cases of rape, suspected incest, or situations where uncertain paternity puts a great strain on the pregnant woman. What does a mother do when amniocentesis demonstrates that her child has spina bifida or has an extra Y chromosome, a condition that may be linked to mild retardation and increased aggressive behavior? Most amniocenteses are performed from the 16th to the 20th week of pregnancy. The results are known about four weeks later. By the 20th week, the woman is showing, feels fetal movement, and, should she opt for abortion if abnormalities are found, she chances delivering a live fetus. What are the psychological effects on a woman who aborts a live baby that has an outside chance of growing into a mentally and physically well person? The answer must be weighed against the consequences of giving birth to a handicapped youngster or of sustaining the pregnancy and then relinquishing the infant for adoption at birth. There are no clear-cut or simple solutions to the problem of fetal screening, but we may be certain that amniocentesis:
- It is not the "safe, highly reliable, and extremely accurate" procedure it was touted to be just a few years ago (21);
- It is an invasive technique that can harm the unborn child both physically and mentally; and
- Its results may force parents to make agonizing choices--to play God--and then to live with that decision for the rest of their lives.
Fetal Heart MonitorsUntil recently, the fetal heart rate was determined by listening with a stethoscope placed on the pregnant woman's abdomen at intervals throughout labor. Now the electronic fetal monitor (EFM) can continuously record the fetal rate on a graph. The EFM utilizes continuous wave ultrasound, in contrast to the ultrasound scanner, which uses pulsating ultrasound. The purpose of the EFM is to detect fetal heart rate abnormalities that would indicate that the baby is in distress. The EFM is applied to the mother's abdomen with tape or an elastic belt to hold an ultrasound transducer and pressure gauge in place. The transducer is positioned where fetal heart sound can best be heard. The pressure gauge indirectly records intrauterine pressure during contractions. A further refinement of the EFM is the internal fetal monitor which involves placing two catheters into the uterus during labor. After the membranes rupture, a spinal metal wire electrode is inserted beneath the scalp of the baby's head. This catheter measures fetal pulse while the second catheter measures intrauterine pressure. The internal monitor is more precise and allows more freedom of movement than the external monitor. Does fetal monitoring accomplish what its supporters claim? Does it prevent cerebral palsy and brain damage? Does it correctly identify fetal distress? Does it, in the final analysis, reduce fetal and maternal morbidity and mortality? An analysis in 1978 of 15,486 live-born infants published in the New England Journal of Medicine, showed a drop in the neonatal death rate from 304 per 1,000 live births in non-EFM labors to 195 per 1,000 in EFM labors in the highest risk pregnancies (31). However, the neonatal death rate in the lowest risk group was only 1 per 1,000 live births, so EFM couldn't possibly improve the outcome. In this group it would probably affect mother and child adversely. A study at the Denver General Hospital compared high-risk women in labor who were monitored with EFM with an equal number of high-risk women on whom EFM was not used. There were no differences in neonatal deaths, Apgar scores, or cord blood gases between the two groups. However, the monitored group's cesarean section rate was more than double that of the auscultated group, and the monitored group had a three times higher rate of postpartum infections (32). Researchers at the National Center of Health Sciences Research (U.S.) who reviewed over 600 studies on fetal monitoring concluded that there was no scientific evidence that continuous EFM prevents brain damage or otherwise improves infant health except in very small babies (33)." The internal monitor is an invasive technique that carries bacteria into the uterus. Because the likelihood of infection increases as time passes, the procedure commits the hospital staff to deliver the baby, ready or not, within 12 to 16 hours. This in turn leads to an increased number of induced labors and cesarean sections. It is not surprising, then, that electronic fetal monitors have led to an increase in cesarean sections wherever they have been used. If the fetal heart monitor tells doctors that the baby is in distress, they will likely draw blood from the fetal scalp. Some babies have been delivered with heads looking like raw hamburger meat. It is conservatively estimated that up to 5% of babies who have had scalp electrodes during labor develop abscesses on their heads, which lead to the use of antibiotics (more needles) and prolonged hospitalization. Finally, the use of the machine over six, ten, or more hours exposes both the baby and mother to a significant dose of ultrasound energy. In spite of all these data, EFM advocates have done a remarkable job of selling the idea to pregnant mothers. Studies have shown a largely positive response to its use, with laboring women finding monitoring reassuring, though worry appeared to increase slightly with longer labors (34, 35). Negative responses focused on the physical discomfort associated with the placement of the electrodes and enforced immobility. The authors of one of these reports suggest: "In order to maximize beneficial and minimize detrimental psychological effects, accurate information about fetal monitoring and its associated procedures should be given to mothers (34). What are the psychological effects of the EFM on the staff, the pregnant woman and her baby?
The First Law of Psychotechnology of Labor (Verny's First Law):
The quantity of technological devices in the labor room is inversely proportional to the amount of human contact between staff and patient (36).As soon as the woman is connected to a fetal heart monitor, all eyes are on the monitor. The pregnant woman must lie flat on her back and not move or she will disturb the monitor. The nurses and doctors no longer put their stethoscopes on her abdomen to listen to the baby; the monitor takes care of that. They no longer palpate, the traditional way to determine quality of contractions, because the belts of the monitor are in the way. The nurse who watches the monitor does not function as a nurse but as a technician. How do nurses feel about this new role? I doubt that this is what they had in mind when they entered nursing with the idea of caring for people. Obstetrical nurses aren't oblivious to this; they try to relate to the patient, but their attention is at best divided between the machine and the woman in labor. The staffs job is made more difficult by the unreliability of the information and the very large chance of misinterpretation of data provided by fetal monitors. Under these circumstances, I would expect the medical staff to be under considerable stress and this stress to be conveyed to the pregnant woman. Staff members seem to deal with this stress by unconsciously denying it and at the same time idealizing the machine. The result is an over reliance upon the monitor and an inability to perceive its shortcomings objectively.
The Second Law of Psychotechnology of Labor (Verny's Second Law):
The quantity of technological devices in the labor room is directly related to the degree of discomfort experienced by the patient(36).Even women thoroughly brainwashed or "prepared" for electronic monitors (and some high-risk women are plugged into both an external and internal fetal monitor) become uncomfortable, worried, and progressively more anxious as labor drags on and they are not allowed to move about. What an insane way to have a child: strapped down to a bed, belts over her stomach, connected with wires to a machine that emits weird sounds and draws graphs--with everyone paying attention to it and not to her. I cannot think of a better method to make a pregnant woman feel unimportant and vulnerable. As her anxiety increases, her body will try to delay labor rather than facilitate it; this will provoke medical interventions and may culminate in a cesarean section. Then staff members will congratulate each other on having saved another baby that would have been lost before the advent of space-age technology. And the mother will be thankful and more than willing to repeat the experience next time she is pregnant. And what of the poor baby? Up to the time his mother is laid out flat on her back, the baby is comforted by the unique rhythm of her movements. Suddenly, all movement ceases. Dramatic changes in its routine elicit anxiety in the baby. Next a needle is jabbed under his scalp, and it hurts! Then perhaps more needles, sometimes one every half hour. Such a baby might well experience a sense of angry puzzlement, an emotional equivalent to the question "Why is my mother doing this to me?" How is the baby expected to be eager to be born if this is a foretaste of what the outside world will be like? How can the baby be expected to push forward with his head when any such movement causes more pain? What a torture to inflict on a human being. How could this process fail to leave psychological scars? (19)
FetoscopyFetoscopy is an outpatient procedure done under ultrasound guidance. It lasts one to two hours and is usually performed after 18 weeks gestation. Physicians generally administer a local anesthetic and intravenous diazepam (Valium) to relax the mother. The most widely used instrument is a combination needle 15 cm long and 1.7mm wide. It contains a solid optic lens with fiberoptic illumination that allows the doctor to see the unborn child in the uterus with two to fivefold magnification (37). Fetoscopy is used to determine the appropriate spot for sampling fetal blood or tissue. Potentially lethal syndromes involving skin abnormalities can be diagnosed by skin biopsies taken with the aid of a fetoscope. Fetoscopy directed by sonography has been successful in obtaining fetal blood in approximately 90 % of cases. It is accompanied by a 3 to 5% risk of spontaneous abortion in experienced hands (38). Other risks to the mother include exchange of blood between the baby and the mother, with maternal sensitization, leakage of amniotic fluid during later months of pregnancy, uterine bleeding, scarring of the uterus, infection, and puncture of other organs (39). There is also the unknown effect of the intensity of the fiberoptic light on the baby's eyes. One good result of the use of fiberoptics has been the realization by at least a few obstetricians of the sensate nature of the unborn. One obstetrician observed: "I had a blood vessel lined up and was just about to strike when out of nowhere came this hand to knock away the needle. I think it was coincidental, but who knows? (40)
Fetal TherapyFetal surgery got its start in 1963 with intrauterine transfusions for Rh-disease. With the widespread use of such high-tech procedures as ultrasound, amniocentesis, and fetoscopy, the number of unborn children being operated upon is beginning to rise rapidly. Recent cases include surgery on the unborn's bladder, head, diaphragm, and heart. In one instance, doctors in San Francisco discovered on a routine ultrasound scan that one of their patients had twins, a female and a male, and that the male was developing abnormal urine retention. "As the picture became clearer, we diagnosed the condition as bladder-outlet obstruction." They realized that any kind of intervention might induce premature delivery and endanger the normally developing twin. At 31 weeks gestation, the doctors succeeded in inserting a catheter under local anesthetic into the bladder of the boy and thus prevented the continued accumulation of urine in his body. At the time the case was reported, he was 2 1/2 months old and doing well. He will require further surgery when he is a little older (41). With ultrasound scanning, about 30 unborn babies have had shunts inserted into their brains to relieve pressure caused by the buildup of cerebrospinal fluid. "It's like bobbing for apples," said Dr. Thomas Brown, a neurosurgeon at Northwestern Memorial Hospital in Chicago (42). Dr. William Clewell of the Colorado Health Science Center cautions that "results are not as dramatic as preliminary reports indicated." He states that the fetal mortality rate for the treatment of fetal hydrocephalus has been 25% and that 30% of the survivors have significant to profound developmental delays (43). Some disorders such as Rh-incompatibility and heart rhythm irregularities may now be detected and treated in utero. Others, such an anencephaly (absence of brain tissue) and chromosomal disorders, though diagnosed, cannot be treated.
Prenatal DiagnosisPrenatal diagnosis benefits many prospective parents who wish to know whether their fetus suffers from certain mental and physical impairments. In most centers, prenatal diagnosis is offered on the assumption that relief from anxiety or an opportunity to prepare for a disabled child are benefits that outweigh the risks to the fetus and mother from a procedure. At the same time, prenatal diagnosis presents a wide range of decisions and challenges for health care providers, prospective parents, and policy makers. Prenatal diagnosis has been integrated into obstetric care with minimal attention to its psychological effects on families. The guiding assumption of advocates of prenatal diagnosis has been that it is a means of preventing tragedy. The testing process appears to change the parents' experience of pregnancy--even when the results are favorable. The period of waiting for results (up to six , weeks in some tests) is often characterized by a "suspension of commitment to the pregnancy," a postponement of what has been called the "integration" stage of pregnancy (44, 45). Fletcher has observed the impact on parents of learning the sex of the fetus, referring to the time of pregnancy following test results as "the newest human stage of life" (46). Both he and Beeson observed that parents who were told the sex of the fetus, and assured of the absence of certain major disorders, began a series of family interactions that previously took place upon birth. These included naming the fetus, informing relatives and friends of the news (or of the pregnancy), and going out and celebrating (45, 46). The psychological effects of miscarriage following amniocentesis (estimated at 0.5 %) or fetoscopy (estimated at 3 to 5 %) have not been studied. Those who miscarry may never know if the miscarriage was caused by the testing, even though they opted to take this risk. Perhaps the most difficult dilemmas are faced by women who are carriers of Duchenne muscular dystrophy, an X-linked disorder. Such women carrying male fetuses must decide whether or not to abort, knowing only that 50% will be affected and 50% will be normal. Selective Abortion: The Ethical Issues. The central ethical issue in prenatal diagnosis that has concerned laymen, religious leaders, and ethicists has been selective abortion. For some parents, prenatal diagnosis may prevent abortion by assuring the absence of certain disorders, but for the majority, abortion is the primary procedure that is responsible for preventing the birth of a disabled child. This option, for which many families are deeply grateful, is not without psychological costs to the parents. Blumberg et al. found that women who abort because of genetic disease may suffer significant emotional trauma and may have a greater need for psychotherapy than women who abort for socioeconomic or psychological reasons. Despite this trauma, Seventy-seven percent of families studied would again opt for amniocentesis and, if indicated, selective abortion in any future pregnancy. These families have accepted selective abortion and its attendant problems as preferable to the birth of a defective child (47). Many who oppose abortion on general grounds think it is the only human response to the knowledge of genetic disease. Others approve of abortion for fetal degenerative diseases such as Tay Sachs disease and Duchenne muscular dystrophy but disapprove of abortion for sickle-cell anemia and hemophilia, which are not immediately fatal and can be treated, albeit with only partial success. A few ethicists and others have expressed concern that we are reducing our tolerance for imperfection(48). Some bioethicists view prenatal diagnosis as an appropriate method of reducing the suffering of an unborn child and the burden on the family; others oppose selective abortion as a violation of fetal rights (49, 50). In response to this controversy, an interdisciplinary group of bioethicists from the Hastings Institute of Society, Ethics, and the Life Sciences met to form guidelines. They concluded that the purpose of prenatal diagnosis should be to treat and eventually cure disease in the fetus or infant. Because this is possible in only a small fraction of cases, they conclude: Abortion is never therapeutic for the fetus, but we believe it can be morally justified for the relief of suffering and burden to family and society. These guidelines were developed in a moral framework favoring the protection of individual choice and the autonomy of parents, even when we disagree with their courses of action ... These guidelines cannot reconcile the views of those who believe that abortion is wrong virtually without exception with the views of those who exclude the welfare of the fetus completely from any argument about reproductive decisions (51). Because with present technology abortions following prenatal diagnosis are generally performed during the second trimester, they are often viewed as ethically more questionable than first trimester abortions. They are more physically and emotionally traumatic for the mother because she has felt fetal movements and the pregnancy is apparent to others. In some centers, it is thought to be psychologically easier on the mother if the abortion is conducted by suction and curettage under general anesthesia. However, many nurses and doctors in the operating room find this form of abortion particularly repugnant and prefer that the mother go through induced labor and delivery. The mother herself may have little choice in the method of abortion. Abortion is not the only ethical issue raised by prenatal diagnosis. It is now possible to detect a number of chromosomal abnormalities the effects of which are not agreed upon. One such case is the presence of an extra Y chromosome. Because the consequences of the condition are disputed, the appropriate response is unclear. In such cases, practitioners generally agree that parents should be informed of the ambiguities even though this may cause anxiety (52). Another problem is the question of whether prenatal diagnosis should be denied to women who are at risk and want the procedure but have decided not to abort.
ConclusionMedical technology has greatly added to our knowledge of fetal development and our capacity to "see" the unborn child. It has also improved the outcome in high-risk pregnancies. The question is whether the benefits from this explosion of gynegadgetry outweigh the risks. First we hospitalized birth; now we have mechanized it. Obstetrics today is rushing headlong toward "guaranteed safe no-risk" birth. In pursuing this goal, we have created new problems that may prove worse than the ones the high-tech procedures were supposed to solve. Current evidence does not favor the unrestrained use of technical procedures. Rather, it would be prudent at present to limit diagnostic tests and monitoring devices in obstetrics to a narrow segment of the spectrum of conditions in high-risk pregnancies.
1. Klaus, M.H., Leger T, and Trause, M.A: Maternal Attachment and Mothering Disorders: A Round Table, sponsored by Johnson & Johnson, Sausalito, CA, 1974.
2. Klaus, M. H., and Kennell, J.H: Maternal-Infant Bonding, St. Louis, 1976. Mosby.
3. Carter-Jessop, L.: Promoting maternal attachment through prenatal intervention, American J. of Maternal Child Nursing 6(2), 1981, pp. 107-112.
4. Lumley, J.: The image of the fetus in the first trimester, Birth and the Family Journal 7(l), 1980.
5. Bowlby, J.: Attachment and loss: Retrospect and prospect, American Journal of Orthopsychiatry, 52(4), 1982, pp. 664-678.
6. Walker, A.H.C.: Liquor amnil studies in the prediction of haemolytic disease of the newborn, British Medical Journal, 2, 1957, p. 376.
7. Beesor, D. and Douglas, R.: Prenatal diagnosis of fetal disorders, Part I: Technological capabilities, Birth 10(4), 1983, pp. 227-232.
8. Golbus, M.S., Conte F.A., et al.: Intrauterine diagnosis of genetic defects: Results, problems, and follow-up of one hundred cases in a prenatal genetic detection center, American Journal of Obstetrics and Gynecology, 118(7), 1974, pp. 897-905.
9. Gordon, H.: Mayo Clinic, The People's Doctor Newsletter, 3(11) 1979, p. 3.
10. Robinson, A, et al.: Intrauterine diagnosis: Potential complications, American Journal of Obstetrics and Gynecology, 116, 1973, pp. 937-941.
11. Cook, L.N., Shott, R.J. and Andrews, B.F.: Fetal complications of diagnostic amniocentesis: A review and report of a case with pneumothorax, Pediatrics, 53, 1974, pp. 421-424.
12. Lamb, M.P.: Gangrene of a fetal limb due to amniocentesis, British Journal of Obstetrics and Gynecology, 82, 1975, pp. 829-830.
13. Goodlin, R.C. and Clewell, W.H.: Sudden death following diagnostic amniocentesis, American Journal of Obstetrics and Gynecology, 118, 1974, pp. 285-288.
14. Amniocentesis kills 1.5 % of fetuses in British study, Medical World News February 19, 1979, pp. 25 and 29.
15. Thomas, M.: Another view, The People's Doctor Newsletter, 3(11), 1979.
16. National Institute of Child Health and Development Project: The safety and accuracy of mid-trimester amniocentesis, 1976, DHEW Publication No. (NIH), 78-190.
17. Crandall, B.F., et al.: Follow-up of 2000 second-trimester amniocentesis, Obstetrics and Gynecology, 56, 1980, pp. 625-628.
18. Wald, N.J., et al.: Congenital talipes and hip malformation in relation to amniocentesis: A case-controlled study, Lancet, 2, 1983, pp. 246-249.
19. Verny, T.R. and Kelly, J.: The Secret Life of the Unborn Child, New York, 1982, Dell,
20. Saurel, A-M.: Audio-psycho-phonology in Cabine de Maternage, paper presented at the 1st International Congress on Pre- and Perinatal Psychology, July 1983, Toronto.
21. New answer from amniocentesis: Who's the father? Medical World News, 7 December 1981, pp. 68.
22. Consensus panel opposes routine use of ultrasound in pregnancy, Medical World News, 12 March 1984, pp. 19-20.
23. Payer, L.: Use of ultrasound on fetus showing no bad effects, Medical Post, 1983.
24. Stockman, J.A.: 1979 Year Book of Pediatrics, Chicago, 1979, Year Book Medical Publications.
25. Stewart and Stewart (Eds.), Compulsory Hospitalization or Freedom of Choice in Childbirth? Marble Hill, MO, 1979, NAPSAC International.
26. Stratmeyer, M.E.: Research in ultrasound bioeffects: A public health view, Birth and the Family Journal, 7(2), 1980, pp. 92-100.
27. Strauss, S.: Microwaves may cause gene damage, The Globe & Mail 29 March 1984, p. 612.
28. Swicord, M.: Microwave may cause gene damage, (48)The Globe & Mail 29 March 1984, U.S. Food & Drug Administration, p. 612.
29. Stark, C.R.: Department of Obstetrics and Gynecology of South Florida Medical School.
30. Campbell, S., et al.: Ultrasound scanning in pregnancy: The short-term psychological effects of early real-time scans, Journal of Psychosomatic Obstetrics and Gynecology, 1(2), 1982, pp. 57-61.
31. Call for improved fetal monitoring refuels debate among physicians, Medical World News, 27 February 1984, pp. 46-47.
32. Haverkamp, A.D., et al.: The evaluation of continuous fetal heart rate monitoring in high risk pregnancy, American Journal of Obstetrics and Gynecology, 125, 1976, pp. 310-317.
33. Edwards, M. and Simkin, P.: Obstetric Tests and Technology: A Consumer Guide.
34. Starkman, M.N. and Youngs, D.D.: Reactions to electronic fetal monitoring, In: Youngs, D.D. and Ehrhardt, A.A., (Eds.), Psychosomatic Obstetrics and Gynecology, New York, 1980, Appleton-Century-Crofts, pp. 145-147.
35. Jackson J.E., et al.: Psychological aspects of fetal monitoring: Maternal reaction to the position of the monitor and staff behavior, Journal of Psychosomatic Obstetrics and Gynecology, 2(2), 1983, pp. 97-102.
36. Verny, T.R.: Presentation at a workshop on psychotechnology of reproduction, University of California, Santa Cruz, April 1984.
37. Elias, S. and Esterly, N.: Prenatal diagnosis of hereditary skin disorders, Clinical Obstetrics Gynecology, 24, 1981, pp. 1069-1087.
38. Nolan, G.H., et al.: The effect of ultrasonography on mid-trimester genetic amniocentesis complications, American Journal of Obstetrics and Gynecology, 140, 1981, p. 531.
39. Philips, J.M.: Fetoscopy: An overview, Journal of Reproductive Medicine, 15, 1975, pp. 69-72.
40. Hobbins in Yale explores the world of the fetus, Contemporary Obstetrics and Gynecology, 2(5), 1973, pp. 18-32.
41. Bladder tap in womb saves twin without harming sister, Medical World News, 17 August 1981, pp. 7-8.
42. Rubber doll helps doctors operate on fetal brain, The Star, Toronto, 1 August, 1983.
43. McDaniel, C.: Fetal surgery results not as dramatic as reported, The Medical Post, 1 November 1983, p. 60.
44. Beeson, D., and Golbus, M.S.: Anxiety engendered by amniocentesis, In: Epstein, C.J., et al., (Eds.), Risk, Communication and Decision Making in Genetic Counseling, New York, 1979, Alan R. Liss for the National Foundation, March of Dimes Birth Defects; Original Article Series, XV, pp. 191-197.
45. Beeson, D.: Technological rhythms in pregnancy: The case of prenatal diagnosis by amniocentesis. In Duster, T. and Garrett, K., (Eds.), Biological Rhythms and Social Relations, Norwood, NJ, Ablex., 1984, pp. 145-181.
46. Fletcher, J.: The brink: The parent-child bond in the genetic revolution, Technological Studies, 33, 1972, pp. 457-485.
47. Blumberg, B.D., et al.: The psychological sequelae of abortion performed for genetic indication, American Journal of Obstetrics and Gynecology, 122(7), 1975, pp. 799-808.
48. Harris, U.: Prenatal Diagnosis and Selective Abortion, Cambridge, MA, 1975, Harvard University Press.
49. Fletcher, J.C.: Moral and ethical problems of prenatal diagnosis, Clinical Generalist, 8, 1975, p. 251.
50. Dyck, A.J.: Ethical issues in community and research medicine, New England Journal of Medicine, 284, 1971, p. 724.
51. Powledge, T.M. and Fletcher, J: Guidelines for the ethical, social, and legal issues in prenatal diagnosis, New England Journal of Medicine, 300, 1979, pp. 168-172.
52. Beeson, D., Douglas, R. and Lumsford, T.F.: Prenatal diagnosis of fetal disorders. Part II: Issues and implications, Birth, 10(4), 1983, pp. 233-241.