Science and Sensibility: Choice of Birth Place in the United States

Saraswathi Vedam, CNM, MSN, SciD(hc); Patricia A. Janssen, RN, BSN, MPH, PhD; Ronnie Lichtman, CNM, PhD

Disclosures

February 25, 2010

Introduction

Rates of planned home birth in the United States have remained at less than 1% for several decades, but current public discourse suggests that women are increasingly interested in this option. International investigators have defined "planned home birth" as the care of selected pregnant women by qualified practitioners within a system that provides for hospitalization when necessary. Safety of birth in any setting is of utmost priority and has been the focus of home-birth research and current professional and public debate. Many women and their families are aware that, in national and international settings, home births conducted in environments of multidisciplinary communication and integration of resources are associated with similar perinatal outcomes and fewer obstetric interventions compared with hospital births.[1,2,3,4,5,6,7,8,9,10]

Science

In the United States, concerns about planned home birth are frequently the result of accepting findings from flawed studies. These studies fail to use reliable methods to differentiate between planned and unplanned home birth, or between attendance by qualified and unqualified attendants.[11,12,13,14,15,16] Other often-cited studies were based on retrospective and incomplete birth certificate data that did not provide accurate information about birth attendants and did not clearly define appropriate inclusion criteria to limit the findings to the usual clientele for planned home births: women at low risk.[15,16,17,18,19] Thus, some professional bodies have concluded that the evidence on safety is insufficient to support provision of home-birth services. The American Congress of Obstetricians and Gynecologists (ACOG) published a strong policy statement, supported by the American Association of Pediatrics and the American Medical Association, which questions the safety and advisability of home birth.[20] Their leaders have suggested that only a large North American randomized prospective controlled study can answer the safety question. However, despite attempts to design a randomized controlled study, to date sufficient numbers of women have not consented to be randomly assigned according to birth site.[21,22]

Other North American professional bodies rely instead on evidence derived from investigations that evaluate outcomes from well-controlled observational cohort studies with credible comparison groups of women. The Society of Obstetricians and Gynaecologists of Canada and the Canadian Association of Midwives, the American midwifery professional societies (American College of Nurse-Midwives, Midwives Alliance of North America, and the National Association of Certified Professional Midwives), consumer groups (Lamaze International, Childbirth Connection), and public health bodies (World Health Organization, American Public Health Association, American Association of Birth Centers) have all issued policy statements in support of planned out-of-hospital birth,[23,24,25,26,27] citing reduced interventions, increased maternal satisfaction, safety, and the importance of informed choice for women.

Recent Improvements in Quality of the Evidence

Since 1996, several increasingly credible trials and observational studies have been conducted in European settings where systems for evaluation of maternity care delivery across birth settings are in place. Critics noted that although no apparent differences in morbidity or mortality were found between home and hospital births for well-matched low-risk women, the conclusions from these investigations were made on the basis of small sample sizes or homogenous groups and were influenced by regional differences in available infrastructure. Because of the low rate of adverse events in the developed world, it has been difficult to assess significant differences between birth settings with respect to perinatal mortality and serious complications.

In 2009, 3 new reports, including 2 in North America, have addressed the methodologic flaws of previous trials on home birth.[1,2,3] De Jonge and colleagues[3] conducted the largest cohort study to date (N = 529,688), which evaluated obstetric outcomes of low-risk women in The Netherlands who were in primary midwife-led care at labor onset.[3] The study compared perinatal mortality and morbidity between planned home births (321,301; 60.7%), planned hospital births (163,261; 30.8%), and unknown place of birth (45,120; 8.5%) using the national perinatal and neonatal registration data from 2000-2006. Groups were matched according to parity, gestational age, maternal age, ethnic background, and socioeconomic status. Inclusion criteria ensured that the women were strictly low-risk. The main outcomes were intrapartum death of the infant, neonatal death within 24 hours or 7 days after birth, and admission to a neonatal intensive-care unit (NICU). No significant differences were found between planned home and planned hospital births for any of the main outcomes. The study authors concluded that planned home birth in a low-risk population is not associated with higher perinatal mortality rates or an increased risk for admission to a NICU compared with planned hospital birth.

Janssen and colleagues[1] recently published results from their prospective 5-year cohort study that compared outcomes among women in a midwife-attended planned home-birth group (n = 2802) with women in a physician-attended hospital-birth group (n = 5985) and midwife-attended planned hospital-birth group (n = 5984). Women in the home-birth group who needed intrapartum transfer to the hospital were retained in their original cohort. This study reported similarly low rates of perinatal death in all 3 cohorts and similar or reduced rates of adverse outcomes in the planned home-birth group with significantly fewer obstetric interventions. Findings indicate that women who planned a home birth had significantly fewer intrapartum interventions, including narcotic or epidural analgesia, augmentation or induction of labor, assisted vaginal births, or cesarean section (c-section). In addition, women in the home-birth group were less likely to have postpartum hemorrhage, pyrexia, and third- or fourth-degree tears. Babies of women who had planned a home birth were less likely to have Apgar scores of < 5 at 1 minute and the babies were less likely to need drugs for resuscitation. These differences were associated with planned place of birth and persisted regardless of actual place of birth. Women in all 3 groups of the study met eligibility criteria for home birth and thus had comparable maternal and fetal risk profiles.

Hutton and colleagues[2] used the Ontario Ministry of Health Midwifery Program database to compare outcomes of all women planning homebirths between 2003 and 2006 (n = 6692) with a matched sample of women planning a hospital birth (n = 6692) (women with contraindications for home birth were excluded). The home-birth group had lower rates of c-section (relative risk [RR], 0.64), maternal morbidity/mortality (RR, 0.77), and neonatal morbidity/mortality (RR, 0.80). Results suggested that Ontario midwives provided adequate screening and safe care for low-risk women planning a home birth and had lower c-section rates compared with hospital births.

Choice

Researchers have described the factors affecting a woman's choice of planned home birth and satisfaction with home birth as the perceived differences in her ability to control the environment and process of care. Specifically, women note that planned home births increase their privacy, comfort, and convenience; reduce the rates of medical interventions; provide greater cultural and spiritual congruency; change the provider-patient power dynamics; and facilitate family involvement and a relaxed, peaceful atmosphere. Women consistently report that these factors increase their sense of safety and allow them the self-determination and empowerment necessary to fully participate in decision-making about aspects of their care.[28,29,30,31,32,33,34,35,36]

However, a woman can exercise choice of birth site only if she has a range of options and unrestricted access to qualified providers and resources. A qualified provider can assist a woman in assessing her birth-site options according to her health status and distance to appropriate maternity care resources. Ideally, those providers offer care across all settings and are fully integrated into a network of maternity care services at all levels. Unfortunately, very few regions in the United States integrate home-birth providers into interprofessional care-provider networks. Differences in regional conditions for practice and/or differences in cultural expectations about site of birth also exist.

Many jurisdictions have significant regulatory, logistic, financial, and legislative barriers to provision of home-birth services. Attitudes and beliefs that are particular to the professional culture may be partly responsible for these restrictions. Some health authorities recognize deficiencies in resources and networks of professional healthcare providers that are essential to providing safe home birth. The malpractice environment and regional differences in malpractice legislation also likely contribute significantly to variations in availability of home-birth options.

The current debate on home birth in the United States indicates the need for constructive discussion and consensus-building about how best to serve women and their families who choose home birth. Ultimately, women and families are ill-served by interprofessional conflict and confusion about best practice in healthcare. Consumers and home-birth providers frequently encounter a lack of receptivity, and even hostility, when transfer to acute care is warranted. This condition may delay timely transfer and significantly reduce continuity of care. Models for effective collaboration and communication exist in some local maternity care systems, but no existing national venue is available to consider these problems and replicate solutions. In addition, many consumers and providers are not well informed about existing systems that assure standardization, quality assessment and evaluation of the essential knowledge base, and professional competencies required for home-birth providers.

Comments

3090D553-9492-4563-8681-AD288FA52ACE
Comments on Medscape are moderated and should be professional in tone and on topic. You must declare any conflicts of interest related to your comments and responses. Please see our Commenting Guide for further information. We reserve the right to remove posts at our sole discretion.
Post as:

processing....