“Therapeutic” Bed Rest in Pregnancy: Unethical and Unsupported by Data

Prevention of preeclampsia

Preeclampsia is a relatively common pregnancy complication and constitutes a major cause of morbidity and mortality for mothers and children worldwide. It disproportionally affects low-resource countries. Appropriate identification of individuals at increased risk and prevention of the disease and its complications remain healthcare and research priorities, and the investigation of potential interventions to prevent preeclampsia has driven much of the obstetric research in recent decades. In this article, we review the scientific literature on the topic, highlighting established benefits and remaining questions regarding different non-pharmacological and pharmacological strategies, including exercise, the timing of birth, aspirin and calcium use, among others, as well as potential novel therapies under investigation.

Bioengineering and the cervix: The past, current, and future for addressing preterm birth

The uterine cervix plays two important but opposing roles during pregnancy - as a mechanical barrier that maintains the fetus for nine months and as a compliant structure that dilates to allow for the delivery of a baby. In some pregnancies, however, the cervix softens and dilates prematurely, leading to preterm birth. Bioengineers have addressed and continue to address the lack of reduction in preterm birth rates by developing novel technologies to diagnose, prevent, and understand premature cervical remodeling. This article highlights these existing and emerging technologies and concludes with open areas of research related to the cervix and preterm birth that bioengineers are currently well-positioned to address.

Activity restriction for women with arrested preterm labor: a randomized controlled trial

BACKGROUND

In the past, some pregnant women have been recommended to be in activity restriction because of the presumed increased risk of preterm birth due to the increased release of catecholamines, which might stimulate myometrial activity, during exercise and aerobic activity.

OBJECTIVE

This study aimed to test the hypothesis that in women with singleton pregnancy and arrested preterm labor, activity restriction would reduce the rate of preterm birth at <37 weeks of gestation.

STUDY DESIGN

This was a parallel-group nonblinded randomized trial conducted at a single center in Italy. Eligible patients were those with a diagnosis of arrested preterm labor, defined as not delivering after 48 hours of hospitalization for threatened preterm labor, with transvaginal ultrasound cervical length ≤25 mm, no other symptoms of possible uterine contractions, and cervical dilatation <3 cm at pelvic examination. Inclusion criteria were singleton pregnancies between 24 0/7 and 33 6/7 weeks of gestation. Participants were randomized in a 1:1 ratio to either activity restriction at the time of discharge or no activity restriction. Women in the intervention group were recommended activity restriction, defined as the following: pelvic rest, prohibition of sexual activity, and reduction of work and/or nonwork activity. The primary endpoint was preterm birth at <37 weeks of gestation.

RESULTS

A total of 120 participants were included in the trial; 60 patients were enrolled in the activity restriction group and 60 in the control group. Preterm birth at <37 weeks of gestation occurred in 15 of 60 women (25.0%) in the activity restriction group and 23 of 60 women (38.3%) in the control group (relative risk, 0.65; 95% confidence interval, 0.38-1.12). There was no significant between-group difference in the incidence of preterm birth at <32 weeks and in neonatal outcomes, but the trial was not powered for these outcomes.

CONCLUSION

In singleton gestations with arrested preterm labor, activity restriction, including pelvic rest, prohibition of sexual activity, and reduction of work and/or nonwork activity, does not result in a lower rate of preterm birth at <37 weeks. Given the evidence on the lack of benefits, use of activity restriction in this population should be discouraged.

The Utility of Transvaginal Ultrasound After Intrauterine Pregnancy Identification on Transabdominal Ultrasound in Emergency Department Patients

Introduction

Ultrasonography has an important role in the evaluation of Emergency Department (ED) patients presenting with early pregnancy complaints. Both transabdominal (TAUS) and transvaginal ultrasound (TVUS) can be utilized. While TVUS generally allows for greater detail, it is unclear how much added benefit exists in performing TVUS once an intrauterine pregnancy (IUP) has been identified on TAUS.

Methods

This was a retrospective study utilizing Radiology Department ultrasound examinations obtained in first trimester pregnancy ED patients during a consecutive four month period in 2019. Studies wherein both TAUS and TVUS were both performed were included. Two ED physicians with specialized training in point of care ultrasound reviewed only the TAUS images from these studies. Their findings were compared to the Radiologist interpretation, which was inclusive of both TAUS and TVUS components of the study.

Results

108 studies met inclusion criteria. Amongst these, 82 had IUP's identified on the radiologist report. 69 studies had an IUP identified by ED physician review of the TAUS images, with 1 false positive. Each case of intrauterine fetal demise (IUFD) was identified on ED physician review of TAUS. Two ectopic pregnancies were present, neither of which was mistaken for IUP on ED physician TAUS review. There were 15 studies with subchorionic hemorrhage and 3 studies with an ovarian cyst noted on the radiologist report.

Conclusion

Following the identification of an IUP on TAUS, the added diagnostic value of TVUS amongst this cohort of ED patients was low. Given the added time and cost of TVUS, selective instead of routine usage should be encouraged.

Longitudinal study of the relationship between number of prior miscarriages or stillbirths and changes in quality of life of pregnant women: the Japan Environment and Children's Study (JECS)

BACKGROUND

Although a history of miscarriage or stillbirth has been reported to negatively affect quality of life (QOL) during the subsequent pregnancy, the association between the number of previous miscarriages or stillbirths and QOL, as well as trends in QOL during pregnancy, has not been clarified. This study sought to determine this association during early and mid- to late pregnancy.

METHODS

Data from 82,013 pregnant women who participated in the Japan Environment and Children's Study (JECS) from January 2011 to March 2014 were analyzed. In early and mid/late pregnancy, participants completed questionnaires and QOL was assessed using the Physical and Mental Component Summary (PCS and MCS, respectively) scores from the 8-item Short-Form Health Survey (SF-8). The pregnant women were divided into four groups according to number of previous miscarriages or stillbirths (0, 1, 2, and ≥ 3), and the PCS and MCS scores in early pregnancy and mid/late pregnancy were compared between group 0 and groups 1, 2, and ≥ 3. Generalized linear mixed models were used for analysis.

RESULTS

PCS score in early pregnancy was lower in group 1 (β =  - 0.29, 95% confidence interval [CI] - 0.42 to - 0.15), group 2 (β =  - 0.45, 95% CI - 0.73 to - 0.18), and group ≥ 3 (β =  - 0.87, 95% CI - 1.39 to - 0.35) than in group 0. Group 1 and group ≥ 3 showed a trend for increased PCS score during pregnancy (β = 0.22, 95% CI 0.07 to 0.37 and β = 0.75, 95% CI 0.18 to 1.33, respectively) compared with group 0.

CONCLUSIONS

PCS score in early pregnancy was lower with a more frequent history of miscarriage or stillbirth. However, in terms of changes in QOL during pregnancy, pregnant women with a history of miscarriage or stillbirth showed greater increases in PCS score during mid/late pregnancy than pregnant women with no history of miscarriage or stillbirth.

Adherence to recommended physical activity restrictions due to threatened preterm delivery - a descriptive multi-center study

BACKGROUND

Threatened preterm delivery is a serious obstetrical complication and has for decades been prescribed physical activity restrictions (AR). Adherence to the recommended level of physical AR is however unknown. This study aimed to assess the objectively measured different physical positions and activities of pregnant women recommended AR due to threatened preterm delivery complications, compared to a reference group of uncomplicated pregnant women without restrictions, and to explore if admission status influenced adherence to AR.

METHODS

A Danish descriptive, clinical multi-center study included singleton pregnancies between 22-33 gestational weeks admitted to an antenatal ward or during midwife consultations either prescribed AR due to threatened preterm delivery or uncomplicated controls without restrictions. For seven days participants wore two tri-axial accelerometric SENS® monitors. Accelerometric data included time spent in five different positions, activities, and step counts. At inclusion demographic and obstetric information was collected.

RESULTS

Seventy-two pregnant women participated; 31% were prescribed strict AR, 15% moderate, 3% light, 8% unspecified, and 43% had no AR. Strict AR participants rested in the supine/lateral position for 17.7 median hours/day (range:9.6-24.0); sat upright 4.9 h/day (0.11-11.7); took 1,520steps/day (20-5,482), and 64% were inpatients. Moderate AR participants rested in the supine/lateral position for 15.1 h/day (11.5-21.6); sat upright 5.6 h/day (2.0-9.3); took 3,310steps/day (467-6,968), and 64% were outpatients. Participants with no AR rested 10.5 h/day (6.3-15.4) in supine/lateral position; sat upright 7.6 h/day (0.1-11.4) and took 9,235steps/day (3,225-20,818). Compared to no restrictions, participants with strict or moderate AR spent significant more time in physical resting positions and took significant fewer mean steps. Among strict AR admission status did not alter time spent in the physical positions, nor the step count.

CONCLUSIONS

Overall, participants adhered highly to the recommended AR. However, discriminating between strict and moderate AR recommendations did not alter how physical resting positions and activities were carried out. The admission status did not influence how participants adhered to strict AR.

Activity Restriction and Hospitalization in Pregnancy: Can Bed-Rest Exercise Prevent Deconditioning? A Narrative Review

Evidence suggests that exercise during pregnancy is beneficial to both parent and fetus. However, there are high-risk pregnancy conditions that may warrant hospitalization. In our narrative review, we first describe the clinical implications for activity restriction in pregnancy, the effects of hospitalization, and the impact of bed rest on non-pregnant individuals. We provide examples of a 30 min bed-rest exercise program for hospitalized pregnant patients using the principal of suggested frequency, intensity, time (duration) of activity, and type of activity (FITT) using a resistance tool while in bed. If the individual is able to ambulate, we recommend short walks around the ward. Every minute counts and activity should be incorporated into a program at least 3 times per week, or every day if possible. As in all exercise programs, motivation and accountability are essential. Flexibility in timing of the exercise intervention is important due to the scheduling of medical assessments that may occur throughout the day for these hospitalized patients. Evidence suggests that by improving physical and emotional health through a bed-rest exercise program during a hospitalized pregnancy may help the individual resume demanding daily activity in the postpartum period and improve quality of life once birth has occurred. More research is necessary to improve the health of those individuals who are hospitalized during pregnancy, with follow up and support into the postpartum period.

Beyond Abortion: The Consequences of Overturning Roe

The upcoming U.S. Supreme Court decision in Dobbs v. Jackson Women's Health Organization has the potential to eliminate or severely restrict access to legal abortion care in the United States. We address the impact that the decision could have on abortion access and its consequences beyond abortion care. We posit that an abortion ban would, in effect, mean that anyone who becomes pregnant, including those who continue a pregnancy and give birth to healthy newborns and those with pregnancy complications or adverse pregnancy outcomes will become newly vulnerable to legal surveillance, civil detentions, forced interventions, and criminal prosecution. The harms imposed by banning or severely restricting abortion access will disproportionately affect persons of color and perpetuate structural racism. We caution that focusing on Roe as a decision that only protects ending a pregnancy ignores the protection that the decision also affords people who want to continue their pregnancies. It overlooks the ways in which overturning Roe will curtail fundamental rights for all those who become pregnant and will undermine their status as full persons meriting Constitutional protections. Such a singular focus inevitably obscures the common ground that people across the ideological spectrum might inhabit to ensure the safety, health, humanity, and rights of all people who experience pregnancy.

Lack of Workplace Support for Obstetric Health Concerns is Associated with Major Pregnancy Complications: A National Study of US Female Surgeons

OBJECTIVE

We sought to assess whether lack of workplace support for clinical work reductions during pregnancy was associated with major pregnancy complications.

SUMMARY BACKGROUND DATA

Surgeons are at high risk of major pregnancy complications. Although rigorous operative schedules pose increased risk, few reduce their clinical duties during pregnancy.

METHODS

An electronic survey was distributed to U.S. surgeons who had at least one live birth. Lack of workplace support was defined as: (1) desiring but feeling unable to reduce clinical duties during pregnancy due to failure of the workplace/training program to accommodate and/or concerns about financial penalties, burden on colleagues, requirement to make up missed call, being perceived as weak; (2) disagreeing colleagues and/or leadership were supportive of obstetrician-prescribed bedrest. Multivariate logistic regression determined the association between lack of workplace support and major pregnancy complications.

RESULTS

Of 671 surgeons, 437 (65.13%) reported lack of workplace support during pregnancy and 302 (45.01%) experienced major pregnancy complications. Surgeons without workplace support were at higher risk of major pregnancy complications than those who had workplace support (OR 2.44; 95%CI 1.58-3.75). 110/671 (16.39%) surgeons were prescribed bedrest, of whom 38 (34.55%) disagreed that colleagues and/or leadership were supportive. Of the remaining surgeons, 417/560 (74.5%) desired work reductions but were deterred by lack of workplace support.

CONCLUSIONS

Lack of workplace support for reduction in clinical duties is associated with adverse obstetric outcomes for surgeons. This is a modifiable workplace obstacle that deters surgeons from acting to optimize their infant's and their own health. To ensure the health of expectant surgeons, departmental policies should support reduction of clinical workload in an equitable manner without creating financial penalties, requiring payback for missed call duties, or overburdening colleagues.

The Compliance of Prescribed Activity Restriction in Women at High Risk for Preterm Birth

OBJECTIVE

Despite lack of evidence to support efficacy, activity restriction is one of the most commonly prescribed interventions used for the prevention of preterm birth. We have a departmental policy against the use of activity restriction but many practitioners still prescribe it in an effort to prevent preterm birth. We sought to evaluate the rate and compliance of women who are prescribed activity restriction during pregnancy to prevent preterm birth.

STUDY DESIGN

This was a single-site retrospective questionnaire study at a tertiary care, academic affiliated medical center. Women with a history of preterm delivery or short cervix were included. Once patients were identified, each patient was contacted and administered a questionnaire. We assessed the rates of activity restriction prescription and compliance. Secondary outcomes included details regarding activity restriction and treatment in pregnancy. Continuous variables were compared with t-test and categorical variables with Chi-square test. The value p < 0.05 was considered significant.

RESULTS

Among the 52 women who responded to the questionnaire, 18 reported being placed on activity restriction by a physician, with 1 self-prescribing activity restriction, giving a rate of our primary outcome of 19 of 52 (36.5%). All women reported compliance with prescribed activity restriction (100%). Gestational age at delivery was not different in women placed on activity restriction.

CONCLUSION

This questionnaire suggests that approximately one in three high-risk women were placed on activity restriction during their pregnancy despite a departmental policy against its use. The 100% compliance rate in patients placed on activity restriction is a strong reminder of the impact prescribing patterns of physicians can have on patients.

KEY POINTS

· One in three women are placed on activity restriction in pregnancy.. · Women are compliant with prescribed activity restriction.. · Activity restriction does not reduce rates of preterm birth..

Perceived stress and support preferences during bed rest in twin pregnancies: A cross-sectional online survey

OBJECTIVE

To identify the most prominent sources of stress, examine correlates of stress, and assess support preferences to inform future interventions among women pregnant with twins who are on bed rest.

MATERIALS AND METHODS

A cross-sectional online survey was administered to pregnant and postpartum women who were recommended bed rest during their twin pregnancy. Total stress while on bedrest was assessed using an adapted version of the Antepartum Hospital Stressors Inventory (AHSI). Bivariate analyses were used to compare total stress scores across participant characteristics using linear regression, Spearman's correlation, and one-way ANOVA. Qualitative content regarding women's bed rest experiences and future intervention preferences was analyzed into themes.

FINDINGS

Women's (N = 104, mean age 30.6 years ± 4.6) most prominent sources of stress while on bed rest included thinking about babies' health, feeling dependent on others, and feeling uncertain about the outcome. Women who were recommended bed rest earlier in their pregnancy or were recommended both home and hospital bedrest had higher stress scores, while women with monochorionic/monoamniotic pregnancies had lower stress scores. Approximately 64% of women indicated interest in a bed rest support program, with 88% indicating a preference for online support and 70% wanting support from family.

KEY CONCLUSIONS

Women pregnant with twins who are recommended bed rest identify many sources of stress. Our findings suggest a need for stress-management interventions targeting this population.

A pilot study on investigating the role of Salvia miltiorrhiza in fetal growth restriction

To date there is no effective treatment for pregnancies complicated by fetal growth restriction (FGR). Salvia miltiorrhiza, a traditional Chinese herb has been shown to promote blood flow and improve microcirculatory disturbance. In this pilot study, we evaluated whether S. miltiorrhiza can potentially become a possible therapy for FGR. Nineteen pregnant women with FGR were treated with S. miltiorrhiza and ATP supplementation for an average of 7 days, and 17 cases received ATP supplementation as controls. The estimated fetal weights (EFWs) were measured by ultrasound after treatment, and the birthweights were recorded after birth. After treatment with S. miltiorrhiza, 7 (37%) FGR cases showed an increase in EFW to above the 10th percentile, compared with 4 (23%) FGR cases in controls (odds ratio: 1.896, 95% confidence limits (CLs): 0.44-8.144). At delivery, 10 (53%) FGR cases in the treatment group delivered babies with a birthweight above the 10th percentile, compared with 6 (35%) FGR cases in the control group (odds ratio: 2.037, 95% CL: 0.532-7.793); 80 or 64% FGR cases in the treatment group showed an increase in fetal abdominal circumference (AC) or biparietal diameter (BPD) above the 10th percentile before delivery. While 44 or 30% FGR cases in the control group showed an increase in AC or BPD. No improvement of head circumference (HC) or femur length (FL) was seen. These pilot data suggest the need for multicenter randomized clinical trials on the potential of S. miltiorrhiza to improve perinatal outcome in pregnant women complicated by FGR.

Society for Maternal-Fetal Medicine Consult Series #50: The role of activity restriction in obstetric management: (Replaces Consult Number 33, August 2014)

Despite current recommendations against its use, activity restriction remains a common intervention used to prevent preterm birth in multiple clinical settings. Hypertensive disorders of pregnancy, preterm premature rupture of membranes, multiple gestations, vaginal bleeding, short cervical length, placenta previa, and fetal growth restriction are also common reasons for antepartum hospital admission and frequently lead to a recommendation for activity restriction. However, numerous reports have shown that activity restriction does not prevent adverse obstetrical outcomes but does confer significant physical and psychosocial risks. This consult reviews the current literature on activity restriction and examines the evidence regarding its use in obstetrical management. The recommendations by the Society for Maternal-Fetal Medicine are as follows: (1) we recommend against the routine use of any type of activity restriction in pregnant women at risk of preterm birth based on preterm labor symptoms, arrested preterm labor, or shortened cervix (GRADE 1B); (2) we recommend against the use of routine inpatient hospitalization and activity restriction for the prevention of preterm birth in women with multiple gestations (GRADE 1A); and (3) given the lack of data definitively demonstrating that activity restriction improves perinatal outcome in pregnancies complicated by fetal growth restriction, preterm premature rupture of membranes, or hypertensive diseases of pregnancy, coupled with evidence of adverse effects of activity restriction, we suggest that activity restriction not be prescribed for the treatment of pregnancies complicated by fetal growth restriction, preterm premature rupture of membranes, or hypertensive disease (GRADE 2B).

Maternal activity restriction to reduce preterm birth: Time to put this fallacy to bed

Activity restriction has traditionally been recommended to pregnant women, especially high-risk patients, to reduce preterm birth. However, there is no scientific evidence that bed-rest reduces preterm birth and, in many studies, women on bed-rest had higher rates of delivering preterm. Bed-rest in pregnancy is associated with significant physiological and psychosocial sequelae and reduced neonatal birth weight and be cannot be endorsed, even in women with a short cervix. The practice of prescribing bed-rest in pregnancy is outdated and should be abandoned.

A qualitative analysis of pressure injury development among medically underserved adults with spinal cord injury

Purpose: Medically underserved adults with spinal cord injury (SCI) remain at high risk of incurring medically serious pressure injuries even after receiving education in prevention techniques. The purpose of this research is to identify circumstances leading to medically serious pressure injury development in medically underserved adults with SCI during a lifestyle-based pressure injury prevention program, and provide recommendations for future rehabilitation approaches and intervention design.Methods: This study entailed a qualitative secondary case analysis of treatment notes from a randomized controlled trial. Participants were 25 community-dwelling, medically underserved adults with SCI who developed medically serious pressure injuries during the course of the intervention of the RCT.Results and conclusions: Among the 25 participants, 40 unique medically serious pressure injuries were detected. The six themes related to medically serious pressure injury development were: (1) lack of rudimentary knowledge pertaining to wound care; (2) equipment and supply issues; (3) comorbidities; (4) non-adherence to prescribed bed rest; (5) inactivity; and (6) circumstances beyond the intervention's reach. Together, these factors may have undermined the effectiveness of the intervention program. Modifications, such as assessing health literacy levels of patients prior to providing care, providing tailored wound care education, and focusing on equipment needs, have potential for altering future rehabilitation programs and improving health outcomes.Implications for rehabilitationTo provide patients with spinal cord injury with the necessary information to prevent medically serious pressure injury development, health care providers need to understand their patient's unique personal contexts, including socio-economic status, language skills, and mental/cognitive functioning.When providing wound care information to patients with spinal cord injury who have developed a medically serious pressure injury, practitioners should take into account the level of health literacy of their patient in order to provide education that is appropriate and understandable.Practitioners should be aware of how to help their patient advocate for outside services and care that address their equipment needs, such as finding funding or grants to pay for expensive medical equipment.

The cultural construction of preterm birth in the United States

This commentary explores four features of the cultural construction of pregnancy and childbirth in the United States: risk categorization as an aspect of reproductive governance, medicalization, intensive mothering with its implications for gender stratification, and the definition of personhood as beginning at conception. The cultural construction of preterm births (those that end before gestation is complete at about 37 weeks) is interwoven with beliefs about risk in pregnancy. Health risk categories overlap with socially stigmatized characteristics and behaviors, opening sub-groups of women up to intensive surveillance and control. The belief that preterm births are preventable and treatable reinforces medical authority and rationalizes the large allocation of resources to specialty (as opposed to primary) maternal and infant care. Expectations for maternal behavior when preterm birth is threatened and when it occurs reinforce norms of intensive mothering, while the ability to keep preterm infants alive reinforces beliefs about fetal personhood. In these ways, the cultural construction of preterm birth in the U.S. holds the broader construction of pregnancy and childbirth in place by raising the stakes of deviation from norms of reproduction to matters of criminality, death, or serious disability.

Prenatal bed rest in developed and developing regions: a systematic review and meta-analysis

BACKGROUND

Bed rest is prescribed by most maternity health care professionals for high-risk pregnancy complications, but the impact of bed rest at home and in hospital has not been explored. Our aim was to quantify the influence of bed rest on maternal/fetal health outcomes in developed and developing regions.

METHODS

We conducted a systematic review and meta-analysis of randomized controlled trials. We conducted a structured search through MEDLINE, Embase, CINAHL, Web of Science and the Cochrane Library through Mar. 7, 2019. Trials comparing standard care to standard care plus bed rest after 20 weeks' gestation were assessed. Outcomes included infant birth weight, being small for gestational age, gestational age, premature or very premature birth, perinatal death, admission to the neonatal intensive care unit, preterm rupture of membranes, hypertensive disorders of pregnancy, preeclampsia and gestational diabetes mellitus.

RESULTS

We identified 1191 publications, of which 43 were assessed for eligibility. Sixteen publications reporting on 14 unique studies (2608 women, 3328 infants) were included in the analysis. Overall, maternal/newborn outcomes were similar between women on bed rest and those not on bed rest. In subgroup analyses of developed and developing regions, length of gestation was shorter with bed rest (weighted mean difference -0.77 wk, 95% confidence interval [CI] -1.26 to -0.27, I ² = 0%), and the risk of a very premature birth was increased (risk ratio 2.07, 95% CI 1.15 to 3.73, I ² = 0%) in developed countries.

INTERPRETATION

In developed regions, treatment of complicated pregnancies with more than 1 week of bed rest results in worse newborn outcomes. Additional studies are required to determine whether bed rest or hospital admission improves outcomes in developing regions. PROSPERO Trial registration number: CRD42018099237.

Choosing Wisely: Bedrest-A Panacea for All That Ails the Gravida?

Bedrest has been frequently prescribed for various high-risk conditions during pregnancy. A common indication cited is concern regarding increased risk of spontaneous preterm birth, known to be associated with gestations with twins or higher-order multiples, polyhydramnios, presence of preterm contractions with or without evidence of cervical change, sonographic cervical shortening, presence of a dilated cervix with bulging membranes, or preterm premature rupture of membranes. In some cases, there is concern that excessive movement may increase the risk of antepartum hemorrhage, as may be with placenta previa, with or without a higher risk of a morbidly adherent placenta or a vasa previa. It is also thought that improved splanchnic perfusion with bedrest may enhance blood supply to the uterus with possible benefit in conditions such as preeclampsia (or gestational hypertension) or fetal growth restriction. However, there is no evidence of any benefit of bedrest or reduced activity during pregnancy for either of these conditions. On the contrary, there is evidence of harm, in addition to the fact that exercise is known to be beneficial in pregnancy.

Quantitative assessment of physical activity in pregnant women with sonographic short cervix and the risk for preterm delivery: A prospective pilot study

Objective

Bed rest or activity restriction is a common obstetrical practice, despite a paucity of data to support its efficacy. The aim of this study was to determine whether physical activity, as assessed by a smart band activity tracker, is associated with preterm birth in pregnant women at high risk for preterm delivery.

Methods

This was a pilot prospective cohort study including pregnant women at high risk for preterm delivery between 24 and 32 weeks-of-gestation. Physical activity level was assessed by smart band activity. Patients with sonographic short cervical length (≤ 20 mm) were asked to wear the smart band activity tracker continuously for at least one week, including one weekend. Both physicians and patients were blinded to the data stored in the smart band activity tracker. No specific recommendations were given to participants as to the level or intensity of physical activity. The primary outcome was the rate of preterm birth (< 37 weeks-of-gestation). Secondary outcomes included the rate of delivery before 34 weeks of gestation and neonatal outcome. Parametric and nonparametric statistics were used for analysis.

Results

Study population included 49 pregnant women: 37 women (75.7%) delivered preterm and 12 (24.5%) delivered at or after 37 weeks-of-gestation. The median steps per day was significantly lower in patients who delivered preterm (3576, IQR: 2478–4775 vs. 4554, IQR: 3632–6337, p = 0.02). Regression analysis revealed that the median number of steps per day was independently inversely associated with preterm birth, after adjustment for maternal age, body mass index, gestational age at recruitment, cervical length, cervical dilatation and plurality.

Conclusion

This pilot study represents the first quantitative assessment of the association between physical activity and preterm birth. The results of this pilot study do not support the efficacy of decreased physical activity in the prevention of preterm birth in patients with sonographic short cervical length.

Activity restriction and risk of preterm delivery. J Matern Fetal Neonatal Med 2017;31:2136-2140. [PMID: 28573877 DOI: 10.1080/14767058.2017.1337738]

PURPOSE

We sought to determine whether activity restriction (AR) in a cohort of women at high risk for preterm delivery is associated with the risk of preterm delivery.

MATERIALS AND METHODS

This is a secondary analysis of the Maternal-Fetal Medicine Units MFMU's Preterm Prediction Study; a multicenter prospective cohort study designed to identify risk factors of preterm birth (PTB). The study group consisted of women with a singleton gestation that at their first study visit (23-24 weeks) had at least one of the following criteria: patient reported contractions, severe back pain, a cervical length <15 mm, spotting, protruding membranes, or positive fetal fibronectin. Women were assessed for AR at a 27- to 29-week study visit. Associations between AR and preterm delivery (<37 weeks) were examined through logistic regression models before and after adjustment for confounders.

RESULTS

Of the 1086 women that met the inclusion criteria, 16.5% (n = 179) delivered preterm. In this cohort, 9.7% (n = 105) of women were recommended AR, with 37.1% (n = 39) having a PTB. In the group not recommended AR (n = 981), 14.3% (n = 140) delivered preterm.

CONCLUSION

In this cohort of women at high risk for PTB, activity restriction was associated with an increased risk of PTB. The use of AR in this population should be discouraged.

Pregnant at work: time for prenatal care providers to act

Fifty years ago, when a woman became pregnant, she was expected to stop working. Today, however, most women who work are the primary, sole, or co-breadwinner for their families, and their earnings during pregnancy are often essential to their families' economic well-being. Medical data about working during pregnancy are sparse but generally show that both low-risk and high-risk women can tolerate work-related duties well, although some work accommodations (eg, providing a chair for sitting, allowing snacks, or modifying the work schedule) may be necessary. However, some employers refuse to accommodate pregnant women who need adjustments. This can result in a woman being forced to make the choice between working without accommodations and losing her income and health insurance or even her job. Prenatal care providers can play an important role by implementing changes in their own practice, shaping public policy, and conducting research to increase protections for pregnant women and to ensure that they receive medically recommended accommodations while continuing to earn income for their growing families.

Experience of Preeclampsia and Bed Rest: Mental Health Implications

Preeclampsia is a major cause of maternal and fetal morbidity and mortality affecting 5-10% of pregnancies. Mental health issues are often exhibited in this vulnerable population partly due to the rigid management of this condition including prolonged bed rest. The purpose of this qualitative study is to describe women's experience with preeclampsia and being placed on bed rest. Six themes emerged including: negative feelings and thoughts, lack of guidelines about their diagnosis, family stressors, lack of social support, not being heard, loss of normal pregnancy, and physical symptoms. The identified categories provide insight into improving care for these women.

Revisiting the cost-effectiveness of universal cervical length screening: importance of progesterone efficacy

BACKGROUND

Preterm birth (PTB) is a significant cause of neonatal morbidity and mortality. Studies have shown that vaginal progesterone therapy for women diagnosed with shortened cervical length can reduce the risk of PTB. However, published cost-effectiveness analyses of vaginal progesterone for short cervix have not considered an appropriate range of clinically important parameters.

OBJECTIVE

To evaluate the cost-effectiveness of universal cervical length screening in women without a history of spontaneous PTB, assuming that all women with shortened cervical length receive progesterone to reduce the likelihood of PTB.

STUDY DESIGN

A decision analysis model was developed to compare universal screening and no-screening strategies. The primary outcome was the cost-effectiveness ratio of both the strategies, defined as the estimated patient cost per quality-adjusted life-year (QALY) realized by the children. One-way sensitivity analyses were performed by varying progesterone efficacy to prevent PTB. A probabilistic sensitivity analysis was performed to address uncertainties in model parameter estimates.

RESULTS

In our base-case analysis, assuming that progesterone reduces the likelihood of PTB by 11%, the incremental cost-effectiveness ratio for screening was $158,000/QALY. Sensitivity analyses show that these results are highly sensitive to the presumed efficacy of progesterone to prevent PTB. In a 1-way sensitivity analysis, screening results in cost-saving if progesterone can reduce PTB by 36%. Additionally, for screening to be cost-effective at WTP=$60,000 in three clinical scenarios, progesterone therapy has to reduce PTB by 60%, 34% and 93%. Screening is never cost-saving in the worst-case scenario or when serial ultrasounds are employed, but could be cost-saving with a two-day hospitalization only if progesterone were 64% effective.

CONCLUSION

Cervical length screening and treatment with progesterone is a not a dominant, cost-effective strategy unless progesterone is more effective than has been suggested by available data for US women. Until future trials demonstrate greater progesterone efficacy, and effectiveness studies confirm a benefit from screening and treatment, the cost-effectiveness of universal cervical length screening in the United States remains questionable.

Bed rest in singleton pregnancies for preventing preterm birth

BACKGROUND

Bed rest in hospital or at home is widely recommended for the prevention of preterm birth. This advice is based on the observation that hard work and hard physical activity during pregnancy could be associated with preterm birth and with the idea that bed rest could reduce uterine activity. However, bed rest may have some adverse effects on other outcomes.

OBJECTIVES

To evaluate the effect of prescription of bed rest in hospital or at home for preventing preterm birth in pregnant women at high risk of preterm birth.

SEARCH METHODS

We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (18 December 2014), the Cochrane Central Register of Controlled Trials (The Cochrane Library, 2014, Issue 12), MEDLINE (December 2014), EMBASE (December 2014), LILACS (December 2014), and bibliographies of relevant papers.

SELECTION CRITERIA

Randomized, cluster-randomized and quasi-randomized controlled trials with reported data that assess clinical outcomes in women at high risk of spontaneous preterm birth who were prescribed bed rest in hospital or at home for preventing preterm birth, and their babies.

DATA COLLECTION AND ANALYSIS

Two review authors independently assessed eligibility, trial quality and extracted data.

MAIN RESULTS

Two studies met the inclusion criteria. One study was not considered for the meta-analysis, since data combined singleton and multiple pregnancies. No differences in any maternal and perinatal outcomes were reported by the authors. This study was at low risk of selection, performance, detection and attrition bias. Only data from one study were included in the meta-analysis (1266 women). This study was at unclear risk of bias for most domains due to lack of reporting. Four hundred and thirty-two women were prescribed bed rest at home and a total of 834 women received a placebo (412) or no intervention (422). Preterm birth before 37 weeks was similar in both groups (7.9% in the intervention group versus 8.5% in the control group; risk ratio (RR) 0.92, 95% confidence interval (CI) 0.62 to 1.37). No other results were reported for any of the other primary or secondary outcomes.

AUTHORS' CONCLUSIONS

There is no evidence, either supporting or refuting the use of bed rest at home or in hospital, to prevent preterm birth. Although bed rest in hospital or at home is widely used as the first step of treatment, there is no evidence that this practice could be beneficial. Due to the potential adverse effects that bed rest could have on women and their families, and the increased costs for the healthcare system, clinicians should discuss the pros and cons of bed rest to prevent preterm birth. Potential benefits and harms should be discussed with women facing an increased risk of preterm birth. Appropriate research is mandatory. Future trials should evaluate both the effectiveness of bed rest, and the effectiveness of the prescription of bed rest, to prevent preterm birth.

Previous pregnancy loss has an adverse impact on distress and behaviour in subsequent pregnancy

OBJECTIVE

To investigate whether women with previous miscarriages or terminations have higher levels of anxiety, depression, stress, and altered behaviours in a subsequent pregnancy.

DESIGN

A retrospective analysis of 5575 women recruited into the Screening for Pregnancy Endpoints (SCOPE) study, a prospective cohort study.

SETTING

Auckland, New Zealand, Adelaide, Australia, Cork, Ireland, and Manchester, Leeds, and London, UK.

POPULATION

Healthy nulliparous women with singleton pregnancies.

METHODS

Outcomes were recorded at 15 and 20 weeks of gestation.

MAIN OUTCOME MEASURES

Short-form State-Trait Anxiety Inventory (STAI) score, Perceived Stress Scale score, Edinburgh Postnatal Depression Scale score, and pregnancy-related behaviour measured using behavioural responses to pregnancy score.

RESULTS

Of the 5465 women included in the final analysis, 559 (10%) had one and 94 (2%) had two previous miscarriages, and 415 (8%) had one and 66 (1%) had two previous terminations of pregnancy. Women with one previous miscarriage had increased anxiety (adjusted mean difference 1.85; 95% confidence interval, 95% CI 0.61-3.09), perceived stress (adjusted mean difference 0.76; 95% CI 0.48-1.03), depression (adjusted odds ratio, aOR 1.26; 95% CI 1.08-1.45), and limiting/resting behaviour in pregnancy (adjusted mean difference 0.80; 95% CI 0.62-0.97). In women with two miscarriages, depression was more common (aOR 1.65; 95% CI 1.01-2.70) and they had higher scores for limiting/resting behaviour in pregnancy (adjusted mean difference 1.70; 95% CI 0.90-2.53) at 15 weeks of gestation. Women with one previous termination displayed elevated perceived stress (adjusted mean difference 0.65; 95% CI 0.08-1.23) and depression (aOR 1.25; 95% 1.08-1.45) at 15 weeks of gestation. Women with two previous terminations displayed increased perceived stress (adjusted mean difference 1.43; 95% CI 0.00-2.87) and depression (aOR 1.67; 95% 1.28-2.18).

CONCLUSIONS

This study highlights the psychological implications of miscarriage and termination of pregnancy.