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Meah VL, Backx K, Davenport MH. Functional hemodynamic testing in pregnancy: recommendations of the International Working Group on Maternal Hemodynamics. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2018; 51:331-340. [PMID: 28857365 DOI: 10.1002/uog.18890] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 08/16/2017] [Accepted: 08/18/2017] [Indexed: 06/07/2023]
Abstract
In the general population, functional hemodynamic testing, such as that during submaximal aerobic exercise and isometric handgrip, and the cold pressor test, has long been utilized to unmask abnormalities in cardiovascular function. During pregnancy, functional hemodynamic testing places additional demands on an already stressed maternal cardiovascular system. Dysfunctional responses to such tests in early pregnancy may predict the development of hypertensive disorders that develop later in gestation. For each of the above functional hemodynamic tests, these recommendations provide a description of the test, test protocol and equipment required, and an overview of the current understanding of clinical application during pregnancy. Copyright © 2017 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- V L Meah
- Centre for Exercise and Health, Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - K Backx
- Centre for Exercise and Health, Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cardiff, UK
| | - M H Davenport
- Program for Pregnancy & Postpartum Health, Physical Activity and Diabetes Laboratory, Faculty of Physical Education & Recreation, Alberta Diabetes Institute, Women and Children's Health Research Institute, University of Alberta, Edmonton, Alberta, Canada
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Perinatal distress in women in low- and middle-income countries: allostatic load as a framework to examine the effect of perinatal distress on preterm birth and infant health. Matern Child Health J 2015; 18:2393-407. [PMID: 24748241 PMCID: PMC4220111 DOI: 10.1007/s10995-014-1479-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In low- and middle-income countries (LMIC), determinants of women’s and children’s health are complex and differential vulnerability may exist to risk factors of perinatal distress and preterm birth. We examined the contribution of maternal perinatal distress on preterm birth and infant health in terms of infant survival and mother–infant interaction. A critical narrative and interpretive literature review was conducted. Peer-reviewed electronic databases (MEDLINE, Embase, Global Health, CINHAL), grey literature, and reference lists were searched, followed by a consultation exercise. The literature was predominantly from high-income countries. We identify determinants of perinatal distress and explicate changes in the hypothalamic–pituitary–adrenal axis, sympathetic, immune and cardiovascular systems, and behavioral responses resulting in pathophysiological effects. We suggest cultural–neutral composite measures of allostatic mediators (i.e., several biomarkers) of maternal perinatal distress as objective indicators of dysregulation in body systems in pregnant women in LMIC. Understanding causal links of maternal perinatal distress to preterm birth in women in LMIC should be a priority. The roles of allostasis and allostatic load are considered within the context of the health of pregnant women and fetuses/newborns in LMIC with emphasis on identifying objective indicators of the level of perinatal distress and protective factors or processes contributing to resilience while facing toxic stress. We propose a prospective study design with multiple measures across pregnancy and postpartum requiring complex statistical modeling. Building research capacity through partnering researchers in high-income countries and LMIC and reflecting on unique ethical challenges will be important to generating new knowledge in LMIC.
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Premji SS, Yim IS, Dosani (Mawji) A, Kanji Z, Sulaiman S, Musana JW, Samia P, Shaikh K, Letourneau N, MiGHT Group. Psychobiobehavioral Model for Preterm Birth in Pregnant Women in Low- and Middle-Income Countries. BIOMED RESEARCH INTERNATIONAL 2015; 2015:450309. [PMID: 26413524 PMCID: PMC4564601 DOI: 10.1155/2015/450309] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 04/03/2015] [Indexed: 12/19/2022]
Abstract
Preterm birth (PTB) is a final common outcome resulting from many interrelated etiological pathways; of particular interest is antenatal psychosocial distress (i.e., stress, anxiety, and depression). In LMI countries, both exposure to severe life stressors and rate of PTB are on average greater when compared with high-income countries. In LMI countries women are exposed to some of the most extreme psychosocial stress worldwide (e.g., absolute poverty, limited social resources). High prevalence of antenatal stress and depression have been observed in some studies from LMI countries. We propose a psychosocial, biological, and behavioral model for investigating the complex multisystem interactions in stress responses leading to PTB and explain the basis of this approach. We discuss ethical considerations for a psychosocial, biological, and behavioral screening tool to predict PTB from a LMI country perspective.
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Affiliation(s)
- Shahirose S. Premji
- Faculty of Nursing, University of Calgary, 2500 University Drive NW, Calgary, AB, Canada T2N 1N4
- Department of Community Health Sciences, Faculty of Medicine, University of Calgary, TRW Building, 3rd Floor, 3280 Hospital Drive NW, Calgary, AB, Canada T2N 4Z6
- Alberta Children's Hospital Research Institute for Child and Maternal Health, Heritage Medical Research Building, 3330 Hospital Drive NW, Calgary, AB, Canada T2N 4N1
- O'Brien Institute for Public Health, University of Calgary, 3280 Hospital Dr NW, Calgary, AB, Canada T2N 4Z6
| | - Ilona S. Yim
- Department of Psychology and Social Behavior, University of California, Irvine, 4562 Social and Behavioral Sciences Gateway, Irvine, CA 92697-7085, USA
| | - Aliyah Dosani (Mawji)
- School of Nursing and Midwifery, Mount Royal University, 4825 Mount Royal Gate SW, Calgary, AB, Canada T3E 6K6
| | - Zeenatkhanu Kanji
- School of Nursing and Midwifery, Aga Khan University-East Africa, Opposite Aga Khan Primary School Plot (9/11), Colonel Muammar Gaddafi Road, P.O. Box 8842, Kampala, Uganda
| | - Salima Sulaiman
- School of Nursing and Midwifery, Aga Khan University-Karachi, Stadium Road, P.O. Box 3500, Karachi 74800, Pakistan
| | - Joseph W. Musana
- Department of Obstetrics & Gynecology, Faculty of Health Sciences, Aga Khan University-Nairobi, 3rd Parklands Avenue off Limuru Road, P.O. Box 30270, Nairobi 00100, Kenya
| | - Pauline Samia
- Department of Pediatrics, Aga Khan University-Nairobi, 2nd Parklands Avenue, East Tower Block, Room 505, Nairobi 00100, Kenya
| | - Kiran Shaikh
- School of Nursing and Midwifery, Aga Khan University-Karachi, Stadium Road, P.O. Box 3500, Karachi 74800, Pakistan
| | - Nicole Letourneau
- Faculty of Nursing, University of Calgary, 2500 University Drive NW, Calgary, AB, Canada T2N 1N4
- Alberta Children's Hospital Research Institute for Child and Maternal Health, Heritage Medical Research Building, 3330 Hospital Drive NW, Calgary, AB, Canada T2N 4N1
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Physiological reactivity to psychological stress in human pregnancy: current knowledge and future directions. Prog Neurobiol 2012; 99:106-16. [PMID: 22800930 DOI: 10.1016/j.pneurobio.2012.07.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Revised: 06/21/2012] [Accepted: 07/09/2012] [Indexed: 12/18/2022]
Abstract
Cardiovascular and neuroendocrine reactivity to acute stress are important predictors of health outcomes in non-pregnant populations. Greater magnitude and duration of physiological responses have been associated with increased risk of hypertensive disorders and diabetes, greater susceptibility to infectious illnesses, suppression of cell-mediated immunity as well as risk for depression and anxiety disorders. Stress reactivity during pregnancy has unique implications for maternal health, birth outcomes, and fetal development. However, as compared to the larger literature, our understanding of the predictors and consequences of exaggerated stress reactivity in pregnancy is limited. This paper reviews the current state of this literature with an emphasis on gaps in knowledge and future directions.
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Christian LM. Psychoneuroimmunology in pregnancy: immune pathways linking stress with maternal health, adverse birth outcomes, and fetal development. Neurosci Biobehav Rev 2012; 36:350-61. [PMID: 21787802 PMCID: PMC3203997 DOI: 10.1016/j.neubiorev.2011.07.005] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 07/05/2011] [Accepted: 07/08/2011] [Indexed: 02/01/2023]
Abstract
It is well-established that psychological stress promotes immune dysregulation in nonpregnant humans and animals. Stress promotes inflammation, impairs antibody responses to vaccination, slows wound healing, and suppresses cell-mediated immune function. Importantly, the immune system changes substantially to support healthy pregnancy, with attenuation of inflammatory responses and impairment of cell-mediated immunity. This adaptation is postulated to protect the fetus from rejection by the maternal immune system. Thus, stress-induced immune dysregulation during pregnancy has unique implications for both maternal and fetal health, particularly preterm birth. However, very limited research has examined stress-immune relationships in pregnancy. The application of psychoneuroimmunology research models to the perinatal period holds great promise for elucidating biological pathways by which stress may affect adverse pregnancy outcomes, maternal health, and fetal development.
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Affiliation(s)
- Lisa M Christian
- Department of Psychiatry, The Ohio State University Medical Center, Columbus, OH 43210, USA.
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Harville EW, Gunderson EP, Matthews KA, Lewis CE, Carnethon M. Pre-pregnancy stress reactivity and pregnancy outcome. Paediatr Perinat Epidemiol 2010; 24:564-71. [PMID: 20955234 PMCID: PMC3506123 DOI: 10.1111/j.1365-3016.2010.01152.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Stress has been proposed as a cause of preterm birth (PTB) and small-for-gestational age (SGA), but stress does not have the same effects on all women. It may be that a woman's reaction to stress relates to her pregnancy health, and previous studies indicate that higher reactivity is associated with reduced birthweight and gestational age. The objective of this study was to examine the relationship between pre-pregnancy cardiovascular reactivity to stress and pregnancy outcome. The sample included 917 women in the Coronary Artery Risk Development in Young Adults Study who had cardiovascular reactivity measured in 1987-88 and at least one subsequent singleton livebirth within an 18-year period. Cardiovascular reactivity was measured using a video game, star tracing and cold pressor test. Gestational age and birthweight were based on the women's self-report, with PTB defined as birth <37 weeks' gestation and SGA as weight <10th percentile for gestational age. Linear and Poisson regression and generalised estimating equations were used to model the relationship between reactivity to stress and birth outcomes with control for confounders. Few associations were seen between reactivity and pregnancy outcomes. Higher pre-pregnancy diastolic blood pressure (adjusted relative risk 1.14; 95% confidence interval [CI] 0.98, 1.34) and mean arterial pressure reactivity (1.15; 0.98, 1.36) were associated with risk of PTB at first pregnancy, while SGA was associated with lower systolic blood pressure reactivity (0.76; 0.60, 0.95). No associations were seen with other measures of reactivity. Contrary to hypothesis, the association between heart rate reactivity and PTB in first pregnancy was stronger in whites (adjusted relative risk 1.39; 1.03, 1.88) than in blacks (1.00; 0.83, 1.20; P for interaction = 0.08). Similar results were found for mean arterial pressure. No strong associations were found between higher pre-pregnancy stress reactivity and SGA or PTB, and stress reactivity did not have a stronger association with birth outcomes in blacks than whites.
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Affiliation(s)
- Emily W. Harville
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA
| | - Erica P. Gunderson
- Division of Research, Epidemiology, and Prevention Section, Kaiser Permanente
| | | | - Cora E. Lewis
- Division of Preventive Medicine, University of Alabama at Birmingham
| | - Mercedes Carnethon
- Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University
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Lazinski MJ, Shea AK, Steiner M. Effects of maternal prenatal stress on offspring development: a commentary. Arch Womens Ment Health 2008; 11:363-75. [PMID: 18975045 DOI: 10.1007/s00737-008-0035-4] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2008] [Accepted: 10/01/2008] [Indexed: 01/21/2023]
Abstract
Pregnancy is associated with major physiological changes and adaptation to these changes is crucial for normal fetal development. Heightened emotional stress during pregnancy may interfere with the necessary adaptation and lead to dysregulation of the two major stress response systems: the Hypothalamic-Pituitary-Adrenal (HPA) Axis and the Autonomic Nervous System (ANS). Negative effects on the fetus of such maladaptation have been documented in both animals and humans and range from poor birth outcomes to negative impacts on neurodevelopment, as well as long term emotional and behavioural disturbances. Conversely, it has been hypothesized that low levels of maternal prenatal stress may actually have an adaptive value for the offspring. Investigation of these associations employing physiological markers and repeated measures throughout pregnancy and postpartum of both the mother and the offspring, is required in order to understand the various effects of prenatal stress on the development of the offspring. It is also crucial to explore the possibility of variable periods of vulnerability throughout gestation. The aim of this commentary is to reexamine the current literature on the ill-effects of maternal stress during pregnancy on the offspring and to explore avenues for future treatment and prevention.
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Affiliation(s)
- Marysia J Lazinski
- Women's Health Concerns Clinic, St Joseph's Healthcare, Hamilton, ON, Canada
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Hatch M, Berkowitz G, Janevic T, Sloan R, Lapinski R, James T, Barth WH. Race, cardiovascular reactivity, and preterm delivery among active-duty military women. Epidemiology 2006; 17:178-82. [PMID: 16477258 DOI: 10.1097/01.ede.0000199528.28234.73] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Rates of preterm delivery in the United States are higher in black women compared with whites. In this study, we examined cardiovascular reactivity and risk of preterm delivery among black and white military women. METHODS We recruited a total of 500 black and white active-duty military women from the prenatal clinic at a large military installation, interviewing them early in pregnancy and again at 28 weeks of gestation. A subgroup of women underwent a computerized stress test to determine cardiovascular reactivity assessed as increases in heart rate and blood pressure compared with measurements taken before the stress test. RESULTS Despite a relatively low overall risk of preterm delivery (8.2%), we found the same 2-fold racial disparity reported in other populations (hazard ratio for preterm delivery in black women vs whites = 2.30; 95% confidence interval = 1.24-4.27). The disparity is present in all military ranks and is largest for medically indicated preterm deliveries. Among the 313 subjects who participated in the computerized stress testing, blacks exhibited more cardiac reactivity than whites. In black subjects only, a 1-mm increase in diastolic blood pressure reactivity was associated with 1.1 a day earlier delivery (-0.17 weeks). A similar trend was seen with heart rate. CONCLUSIONS Autonomic dysfunction after exposure to stressors may play a role in the timing of delivery among black women.
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Affiliation(s)
- Maureen Hatch
- Department of Community and Preventive Medicine, Mount Sinai School of Medicine, New York, NY, USA.
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Giscombé CL, Lobel M. Explaining disproportionately high rates of adverse birth outcomes among African Americans: the impact of stress, racism, and related factors in pregnancy. Psychol Bull 2005; 131:662-83. [PMID: 16187853 PMCID: PMC7451246 DOI: 10.1037/0033-2909.131.5.662] [Citation(s) in RCA: 238] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Compared with European Americans, African American infants experience disproportionately high rates of low birth weight and preterm delivery and are more than twice as likely to die during their 1st year of life. The authors examine 5 explanations for these differences in rates of adverse birth outcomes: (a) ethnic differences in health behaviors and socioeconomic status; (b) higher levels of stress in African American women; (c) greater susceptibility to stress in African Americans; (d) the impact of racism acting either as a contributor to stress or as a factor that exacerbates stress effects; and (e) ethnic differences in stress-related neuroendocrine, vascular, and immunological processes. The review of literature indicates that each explanation has some merit, although none is sufficient to explain ethnic disparities in adverse birth outcomes. There is a lack of studies examining the impact of such factors jointly and interactively. Recommendations and cautions for future research are offered.
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Affiliation(s)
- Cheryl L Giscombé
- Department of Psychology, Stony Brook University, Stony Brook, NY 11794-2500, USA
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