Electronic Fetal Monitoring and Cesarean Birth: A Scoping Review

Psychosocial outcomes from one cohort participating in the STan Australian Randomised controlled Trial (START)

BACKGROUND

In an Australian randomized controlled trial (RCT), two techniques for intrapartum fetal surveillance were compared: ST analysis (STan) as an adjunct to cardiotocography (CTG), compared with CTG alone. The aim was to determine whether CTG + STan could reduce emergency cesarean birth rates while maintaining or improving neonatal outcomes. Secondary aims were to compare clinical, economic, and psychosocial outcomes. The purpose of this paper was to present psychosocial outcomes from one cohort enrolled in the trial.

METHODS

The study was conducted at one tertiary referral hospital. Participants who had taken part in the trial from the outset were invited to complete a questionnaire between March 2018 and January 2020, approximately 8 weeks after giving birth. Outcomes included depression, psychological distress, health-related quality of life, and infant feeding practices. Analysis was by intention to treat.

RESULTS

N = 207/527 participants completed the questionnaire (n = 113, STan; n = 94, CTG alone). Overall, no statistically significant or clinically meaningful differences were found in the two groups for symptoms of depression, psychological distress, quality of life, or infant feeding. A statistically significant difference was observed for the subscale of pain-discomfort, where scores were higher on average in the CTG alone arm relative to that in the CTG + STan arm.

CONCLUSIONS

Although STan as an adjunct to CTG constitutes a different clinical technology from CTG alone, both monitoring types appeared to produce similar results in terms of postnatal psychosocial outcomes for women. Findings from this study provide service users and staff with a comprehensive assessment of STan that can be used to make evidence-informed decisions about monitoring options should STan become more widely available.

Navigating intensive altered states of consciousness: How can the set and setting key parameters promote the science of human birth?

The subjective childbirth experience is crucial from a public health standpoint. There is a correlation between a negative childbirth experience and a poor mental state after birth, with effects that go far beyond the postpartum (PP) period. This paper offers a new approach as to how birthing experiences, and birth in general, can be navigated. The theory of set and setting proves that psychedelic experiences are shaped, first and foremost, by the mindset of an individual entering a psychedelic experience (set) and by the surroundings in which the experience happens (setting). In research on altered states of consciousness during psychedelic experiences, this theory explains how the same substance can lead to a positive and life-changing experience or to a traumatic and frightening experience. Because recent studies suggest that birthing women enter an altered state of consciousness during physiological birth ("birthing consciousness"), I suggest analyzing the typical modern birthing experience in terms of set and setting theory. I argue that the set and setting key parameters can help design, navigate, and explain many psychological and physiological elements of the human birth process. Thus, an operative conclusion that emerges from the theoretical analysis presented in this paper is that framing and characterizing the birth environment and birth preparations in terms of set and setting is a central tool that could be used to promote physiological births as well as subjective positive birthing experiences, which is currently a primary, yet unreached goal, in modern obstetrics and public health.

Accuracy of intrapartum cardiotocography in identifying fetal acidemia by umbilical cord blood analysis in low-risk pregnancies

OBJECTIVE

The aim of this study was to evaluate the accuracy of intrapartum cardiotocography in identifying fetal acidemia by umbilical cord blood analysis in low-risk pregnancies.

METHODS

This is a retrospective cohort study of low-risk singleton pregnancies in labor after performing intrapartum cardiotocography categories I, II, and III. The presence of fetal acidemia at birth was identified by analyzing the pH of umbilical cord arterial blood (pH<7.1).

RESULTS

No significant effect of the cardiotocography category on the arterial (p=0.543) and venous (p=0.770) pH of umbilical cord blood was observed. No significant association was observed between the cardiotocography category and the presence of fetal acidemia (p=0.706), 1-min Apgar score <7 (p=0.260), hospitalization in the neonatal intensive care unit (p=0.605), newborn death within the first 48 h, need for neonatal resuscitation (p=0.637), and adverse perinatal outcomes (p=0.373). Sensitivities of 62, 31, and 6.0%; positive predictive values of 11.0, 16.0, and 10.0%; and negative predictive values of 85, 89.0, and 87.0% were observed for cardiotocography categories I, II, and III, respectively.

CONCLUSION

The three categories of intrapartum cardiotocography presented low sensitivities and high negative predictive values to identify fetal acidemia at birth in low-risk pregnancies.

Using Institutional Ethnography to Explicate the Everyday Realities of Nurses' Work in Labor and Delivery

Fetal health surveillance is a significant everyday work responsibility for labor and delivery nurses. Here, nursing care is increasingly focused on technological interventions, particularly with the use of continuous electronic fetal monitoring. Using Institutional Ethnography, we explored how nurses conduct this work and uncovered the ruling relations coordinating how nurses "do" fetal health surveillance. Analysis revealed how these powerful ruling relations associated with the biomedical and medical-legal discourses coordinated nurses' fetal monitoring work. Forms requiring documentation of biophysical data caused nurses to focus on technological interventions with much less attention given to holistic and supportive care measures. In doing so, nurses inadvertently activated and participated in these powerful ruling discourses. The practice of ensuring the safe birth of the baby through advances in technological surveillance and medical interventions took priority over well-established approaches to holistic nursing care.

Shared Decision-Making During Labor and Birth Among Low-Risk, Active Duty Women in the U.S. Military

INTRODUCTION

The cesarean birth rate of 24.7% in the Military Health System (MHS) is lower than the national rate of 31.7%. However, the MHS rate remains higher than the 15-19% threshold associated with optimal maternal and neonatal outcomes. For active duty servicewomen, increased morbidity associated with cesarean birth is likely to affect the ability to meet the demands of assigned missions. Several decision-points occur during pregnancy and after the onset of labor that can affect the likelihood of cesarean birth including choice of provider, choice of hospital, timing of admission, and type of fetal monitoring. Evidence suggests the overuse of labor interventions may be associated with cesarean birth. Shared decision-making (SDM) is a strategy that can be used to carefully consider the risks, benefits, and alternatives of each labor intervention and is shown to be associated with positive patient outcomes. Most existing evidence explores SDM as an interaction that occurs between women and their providers. Few studies have explored the role of stakeholders such as spouses, family members, friends, labor and delivery nurses, and doulas. Furthermore, little is known about the process of SDM during labor and childbirth in the hospital setting, particularly for active duty women in the U.S. military. The purpose of this study was to propose a framework that explains the process of SDM during labor and childbirth in the hospital setting for active duty women in the U.S. military.

MATERIALS AND METHODS

A qualitatively driven mixed-methods approach was conducted to propose a framework that explains the process of SDM during labor and childbirth in the hospital setting for active duty women in the U.S. military. Servicewomen were recruited from September 2019 to April 2020. Semi-structured interviews were analyzed using a constructivist grounded theory approach. Participants also completed the SDM Questionnaire (SDM-Q-9).

RESULTS

Interviews were conducted with 14 participants. The sample included servicewomen from the Air Force (n = 7), Army (n = 4), and Navy (n = 3). Two participants were enlisted and the remainder were officers. Ten births occurred at military treatment facilities (MTFs) and six births took place at civilian facilities. The mean score on the SDM Questionnaire was 86.7 (±11.6), indicating a high level of SDM. Various stakeholders (e.g., providers, labor and delivery nurses, doulas, spouses, family members, and friends) were involved in SDM at different points during labor and birth. The four stages of SDM included gathering information, identifying preferences, discussing options, and making decisions. Events that most often involved SDM were deciding when to travel to the hospital, deciding when to be admitted, and selecting a strategy for pain management. Military factors involved in SDM included sources of information, selecting and working with civilian providers, and delaying labor interventions to allow time for an active duty spouse to travel to the hospital.

CONCLUSIONS

SDM during labor and birth in the hospital setting is a multi-stage process that involves a variety of stakeholders, including the woman, members of her social and support network, and healthcare professionals. Future research is needed to explore perspectives of other stakeholders involved in SDM.

Maternal and perinatal outcomes in women with eclampsia by mode of delivery at Riley mother baby hospital: a longitudinal case-series study

Background

Eclampsia, considered as serious complication of preeclampsia, remains a life-threatening condition among pregnant women. It accounts for 12% of maternal deaths and 16–31% of perinatal deaths worldwide. Most deaths from eclampsia occurred in resource-limited settings of sub-Saharan Africa. This study was performed to determine the optimum mode of delivery, as well as factors associated with the mode of delivery, in women admitted with eclampsia at Riley Mother and Baby Hospital.

Methods

This was a hospital-based longitudinal case-series study conducted at the largest and busiest obstetric unit of the tertiary hospital of western Kenya. Maternal and perinatal variables, such as age, parity, medications, initiation of labour, mode of delivery, admission to the intensive care unit, admission to the newborn care unit, organ injuries, and mortality, were analysed using the Statistical Package for the Social Sciences software version 20.0. Quantitative data were described using frequencies and percentages. The significance of the obtained results was judged at the 5% level. The chi-square test was used for categorical variables, and Fisher’s exact test or the Monte Carlo correction was used for correction of the chi-square test when more than 20% of the cells had an expected count of less than 5.

Results

During the study period, 53 patients diagnosed with eclampsia were treated and followed up to 6 weeks postpartum. There was zero maternal mortality; however, perinatal mortality was reported in 9.4%. Parity was statistically associated with an increased odds of adverse perinatal outcomes (p = 0.004, OR = 9.1, 95% CI = 2.0–40.8) and caesarean delivery (p = 0.020, OR = 4.7, 95% CI = 1.3–17.1). In addition, the induction of labour decreased the risk of adverse outcomes (p = 0.232, OR = 0.3, 95% CI = 0.1–2.0).

Conclusion

There is no benefit of emergency caesarean section for women with eclampsia. This study showed that induction of labour and vaginal delivery can be successfully achieved in pregnant women with eclampsia. Maternal and perinatal mortality from eclampsia can be prevented through prompt and effective care.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12884-021-03875-6.

"An unnecessary cut?" multilevel health systems analysis of drivers of caesarean sections rates in Italy: a systematic review

BACKGROUND

Improvements in medical technologies have seen over-medicalization of childbirth. Caesarean section (CS) is a lifesaving procedure proven effective in reducing maternal and perinatal mortality across the globe. However, as with any medical procedure, the CS intrinsically carries some risk to its beneficiaries. In recent years, CS rates have risen alarmingly in high-income countries. Many exceeding the World Health Organisation (WHO) recommendation of a 10 to 15% annual CS rate. While this situation poses an increased risk to women and their children, it also represents an excess human and financial burden on health systems. Therefore, from a health system perspective this study systematically summarizes existing evidence relevant to the factors driving the phenomenon of increasing CS rates using Italy as a case study.

METHODS

Employing the WHO Health System Framework (WHOHSF), this systematic review used the PRISMA guidelines to report findings. PubMed, SCOPUS, MEDLINE, Cochrane Library and Google Scholar databases were searched up until April 1, 2020. Findings were organised through the six dimensions of the WHOHSF framework: service delivery, health workforce, health system information; medical products vaccine and technologies, financing; and leadership and governance.

RESULTS

CS rates in Italy are affected by complex interactions among several stakeholder groups and contextual factors such as the hyper-medicalisation of delivery, differences in policy and practice across units and the national context, issues pertaining to the legal and social environment, and women's attitudes towards pregnancy and childbirth.

CONCLUSION

Mitigating the high rates of CS will require a synergistic multi-stakeholder intervention. Specifically, with processes able to attract the official endorsement of policy makers, encourage concensus between regional authorities and local governments and guide the systematic compliance of delivery units with its clinical guidelines.

A qualitative study of a sample of women participating in an Australian randomised controlled trial of intrapartum fetal surveillance

BACKGROUND

The STan Australian Randomised controlled Trial (START), the first of its kind in Australia, compares two techniques of intrapartum fetal surveillance (cardiotocographic electronic fetal monitoring (CTG) plus analysis of the ST segment of the fetal electrocardiogram (STan+CTG) with CTG alone) with the aim of reducing unnecessary obstetric intervention. It is also the first comprehensive intrapartum fetal surveillance (IFS) trial worldwide, including qualitative examination of psychosocial outcomes and cost-effectiveness. In evaluating and implementing healthcare interventions, the perspectives and experiences of individuals directly receiving them is an integral part of a comprehensive assessment. Furthermore, the added value of using qualitative research alongside randomised controlled trials (RCTs) is becoming widely acknowledged.

OBJECTIVE

This study aimed to examine women's experiences with the type of IFS they received in the START trial.

METHODS

Using a qualitative research design, a sample of thirty-two women were interviewed about their experiences with the fetal monitoring they received. Data were analysed using thematic analysis.

FINDINGS

Six themes emerged from analysis: reassurance, mobility, discomfort, perception of the fetal Scalp Electrode (FSE), and overall positive experience.

CONCLUSION

Interestingly, it was found that women who had an FSE in the CTG alone arm of the trial reported very similar experiences to women in the STan+CTG arm of the trial. Despite STan and CTG differing clinically, from women's perspectives, the primary difference between the two techniques was the utilisation (or not) of the FSE. Women were very accepting of STan+CTG as it was perceived and experienced as a more accurate form of monitoring than CTG alone. Findings from this study have significant implications for health professionals including midwives and obstetricians and implications for standard practice and care. The study has demonstrated the importance and significance of incorporating qualitative enquiry within RCTs.

Intrapartum cardiotocograph monitoring and perinatal outcomes for women at risk: Literature review

PROBLEM

Caesarean section rates have risen in high-income countries. One of the potential drivers for this is the widespread use of CTG monitoring.

BACKGROUND

Intrapartum cardiotocograph monitoring is considered to be indicated for women at risk for poor perinatal outcome.

AIM

This systematic literature review with meta-analysis examined randomised controlled trials and non-experimental research to determine whether cardiotocograph monitoring rather than intermittent auscultation during labour was associated with changes in perinatal mortality or cerebral palsy rates for high-risk women.

METHODS

A systematic search for research published up to 2019 was conducted using PubMed, CINAHL, Cochrane, and Web of Science databases. Non-experimental and randomised controlled trial research in populations of women at risk which compared intrapartum cardiotocography with intermittent auscultation and reported on stillbirth, neonatal mortality, perinatal mortality and/or cerebral palsy were included. Relative risks were calculated from extracted data, and meta-analysis of randomised controlled trials was undertaken.

FINDINGS

Nine randomised controlled trials and 26 non-experimental studies were included. Meta-analysis of pooled data from RCTs in mixed- and high-risk populations found no statistically significant differences in perinatal mortality rates. The majority of non-experimental research was at critical risk of bias and should not be relied on to inform practice. Cardiotocograph monitoring during preterm labour was associated with a higher incidence of cerebral palsy.

DISCUSSION

Research evidence failed to demonstrate perinatal benefits from intrapartum cardiotocograph monitoring for women at risk for poor perinatal outcome.

CONCLUSION

There is an urgent need for well-designed research to consider whether intrapartum cardiotocograph monitoring provides benefits.

Comparing the effect of STan (cardiotocographic electronic fetal monitoring (CTG) plus analysis of the ST segment of the fetal electrocardiogram) with CTG alone on emergency caesarean section rates: study protocol for the STan Australian Randomised controlled Trial (START)

BACKGROUND

Cardiotocography is almost ubiquitous in its use in intrapartum care. Although it has been demonstrated that there is some benefit from continuous intrapartum fetal monitoring using cardiotocography, there is also an increased risk of caesarean section which is accompanied by short-term and long-term risks to the mother and child. There is considerable potential to reduce unnecessary operative delivery with up to a 60% false positive diagnosis of fetal distress using cardiotocography alone. ST analysis of the fetal electrocardiogram is a promising adjunct to cardiotocography alone, and permits detection of metabolic acidosis of the fetus, potentially reducing false positive diagnosis of fetal distress.

METHODS

This study will be a single-centre, parallel-group, randomised controlled trial, conducted over 3 years. The primary hypothesis will be that the proportion of women with an emergency caesarean section on ST analysis will not equal that for women on cardiotocography monitoring alone. Participants will be recruited at the Women's and Children's Hospital, a high-risk specialty facility with approximately 5000 deliveries per annum. A total of 1818 women will be randomised to the treatment or conventional arm with an allocation ratio of 1:1, stratified by parity. The primary outcome is emergency caesarean section (yes/no). Statistical analysis will follow standard methods for randomised trials and will be performed on an intention-to-treat basis. Secondary maternal and neonatal outcomes will also be analysed. Additional study outcomes include psychosocial outcomes, patient preferences and cost-effectiveness.

DISCUSSION

Approximately 20% of Australian babies are delivered by emergency caesarean section. This will be the first Australian trial to examine ST analysis of the fetal electrocardiogram as an adjunct to cardiotocography as a potential method for reducing this proportion. The trial will be among the first to comprehensively examine ST analysis, taking into account the impact on psychosocial well-being as well as cost-effectiveness. This research will provide Australian evidence for clinical practice and guideline development as well as for policy-makers and consumers to make informed, evidence-based choices about care in labour.

TRIAL REGISTRATION

ANZCTR, ACTRN1261800006268 . Registered on 19 January 2018.

National survey of routines for intrapartum fetal monitoring in Norway

INTRODUCTION

This study describes clinical routines for intrapartum fetal monitoring in Norway and compliance with national clinical recommendations.

MATERIAL AND METHODS

A national survey of all (n = 48) birth units in Norway, using a self-reporting questionnaire about fetal monitoring methods and devices available in the birth units, admission cardiotocography (CTG) use, intrapartum fetal monitoring methods for women with and without risk factors, the availability of fetal scalp blood sampling facilities, and umbilical cord blood sampling routines.

RESULTS

All birth units responded. They all had access to Pinard stethoscopes, hand-held Doppler devices, and CTG. Half of the units used ST waveform analysis (STAN) as an adjunct to CTG. Furthermore, 23 of 48 units analyzed fetal blood samples and 43 of 48 umbilical cord blood gas samples. In 11 units, admission CTG was routinely offered to all women. No units used continuous CTG during labor in low-risk women. However, three units routinely used intermittent CTG during the first stage of labor. Three units used CTG without having access to fetal blood samples or STAN.

CONCLUSIONS

Our findings indicate some deviations from clinical recommendations in the use of intrapartum fetal monitoring in Norway. Three units used intermittent CTG for women without risk factors. Almost one in four units routinely used admission CTG, despite national clinical recommendations. The lack of access to fetal blood samples or STAN in units using CTG is of concern.

Segregation of Patients for Intrapartum Monitoring, using Robson's Classification

INTRODUCTION

Monitoring labour by intermittent or continuous foetal heart rate monitoring has been discussed widely in literature. Robson's classification has categorized pregnant women in ten groups. The study proposes to examine in which patients one must recommend continuous or intermittent foetal heart rate monitoring.

AIM

To study the effect of Continuous Electronic Foetal Monitoring (CEFM) on the overall rate of operative deliveries as well as the rate using Robson's classification and the neonatal outcome.

MATERIALS AND METHODS

After Institutional Review Board approval, low risk parturients with a reactive foetal heart rate at arrival in labour were prospectively analysed. Women with a previous caesarean section, those requiring elective caesarean section and having high risk factors were excluded. Patient details, history, examination findings and the method of monitoring, whether continuous or intermittent was noted. 1803 women were monitored by CEFM and 2107 by intermittent auscultation. In both the groups of intrapartum monitoring, suspected foetal distress was followed by immediate intervention in the form of caesarean section or operative vaginal delivery without resorting to any other monitoring methods such as foetal scalp blood sampling, as per the institutional policy. Comparison was based on the need for operative deliveries in view of presumed foetal distress and the neonatal outcome between the two groups of monitoring and further in each Robson's class. Results were assessed using IBM® SPSS Version 22.0, Chi-square test, considering p<0.05 as significant.

RESULTS

Operative deliveries in view of suspected foetal distress increased and the neonatal outcome was better with CEFM. Assessing in each Robson's class, only class 4A, 7A and 10A results were consistent with the overall outcome. In others (class 2A), women experienced reduced rate of operative deliveries and better neonatal outcome with CEFM. In yet others, there was no benefit with CEFM as there were increased operative deliveries without any difference in the neonatal outcome.

CONCLUSION

Segregation of patients for intrapartum monitoring using Robson's classification would result in decreased operative deliveries and a better neonatal outcome.