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BACKGROUND: We aimed to examine the inter-reliability and agreement among midwives when assessing the fetal heart rate (FHR) using the handheld Doppler. The primary aim was to measure the reliability and agreement of FHR baseline (baseline) as beats per minute (bpm). The secondary aims were to measure fluctuations from the baseline, defined as increases and decreases, and classifications (normal or abnormal) of FHR soundtracks. This is the first interrater reliability and agreement study on intermittent auscultation (IA) to our knowledge. METHODS: The participant population consisted of 154 women in labor, from a mixed-risk population and admitted to hospital for intrapartum care. The rater population were 16 midwives from various maternity care settings in Norway. A total of 154 soundtracks were recorded with a handheld Doppler device, and the 16 raters assessed 1-min soundtracks once, through an online survey (Nettskjema). They assessed the baseline, FHR increase or decrease, and the FHR classification. The primary outcome, baseline, was measured with intraclass correlation coefficient (ICC). The secondary outcomes were measured with kappa and proportion of agreement. RESULTS: The interrater reliability for the baseline (bpm) was ICC(A,1) 0.74 (95% CI 0.69-0.78). On average, an absolute difference of 7.9 bpm (95% CI 7.3-8.5 bpm) was observed between pairs of raters. CONCLUSION: Our results demonstrate an acceptable level of reliability and agreement in assessing the baseline using a handheld Doppler.
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OBJECTIVE: To describe intrapartum fetal monitoring methods used in all births in Norway in 2019-2020, assess adherence to national guidelines, investigate variation by women's risk status, and explore associations influencing monitoring practices. METHODS: A nationwide population-based study. We collected data about all pregnancies with a gestational age ≥ 22 weeks during 2019-2020 from the Medical Birth Registry of Norway. We used descriptive analyses, stratified for risk status, to examine fetal monitoring methods used in all deliveries. Univariable and multivariable logistic regression models were used to determine factors associated with monitoring with cardiotocography (CTG) in low-risk, straightforward births. RESULTS: In total, 14 285 (14%) deliveries were monitored with only intermittent auscultation (IA), 46214 (46%) with only CTG, and 33417 (34%) with IA and CTG combined. Four percent (2 067/50 533) of women with risk factors were monitored with IA only. Half (10589/21 282) of the low-risk women with straightforward births were monitored with CTG. Maternal and fetal characteristics, size of the birth unit and regional practices influenced use of CTG monitoring in this group. CONCLUSIONS: Most births are monitored with CTG only, or combined with IA. Half the women with low-risk pregnancies and straightforward births were monitored with CTG although national guidelines recommending IA.
Sujet(s)
Cardiotocographie , Surveillance de l'activité foetale , Adhésion aux directives , Humains , Femelle , Norvège , Grossesse , Cardiotocographie/méthodes , Cardiotocographie/normes , Adulte , Surveillance de l'activité foetale/méthodes , Adhésion aux directives/statistiques et données numériques , Enregistrements , Âge gestationnel , Accouchement (procédure)/méthodes , Accouchement (procédure)/statistiques et données numériques , Auscultation/méthodes , Facteurs de risque , Rythme cardiaque foetal , Jeune adulteRÉSUMÉ
Background: Electronic fetal heart rate monitoring (EFM) has been widely used in obstetric practice for over 40 years to improve perinatal outcomes. Its popularity is growing in Ethiopia and other sub-Saharan African countries to reduce high perinatal morbidity and mortality rates. However, its impact on delivery mode and perinatal outcomes in low-risk pregnancies remains controversial. This study aimed to assess the effect of continuous EFM on delivery mode and neonatal outcomes among low-risk laboring mothers at Debre Markos Comprehensive Specialized Hospital, Northwest Ethiopia. Methods: A prospective follow-up study was conducted from November 20, 2023, to January 10, 2024. All low-risk laboring mothers meeting the inclusion criteria were included. Data were collected via pretested structured questionnaires and observation, then analyzed using Epi-data 4.6 and SPSS. The incidences of cesarean delivery and continuous EFM were compared using the chi-squared test and Fisher's exact test. Results: The study found higher rates of instrumental-assisted vaginal delivery (7% vs. 2.4%) and cesarean sections (16% vs. 2%) due to unsettling fetal heart rate patterns in the continuous EFM group compared to the intermittent auscultation group. However, there were no differences in immediate neonatal outcomes between the groups. Conclusion: When compared to intermittent auscultation with a Pinard fetoscope, the routine use of continuous EFM among low-risk laboring mothers was associated with an increased risk of cesarean sections and instrumental vaginal deliveries, without significantly improving immediate newborn outcomes. However, it is important to note that our study faced significant logistical constraints due to the limited availability of EFM devices, which influenced our ability to use EFM comprehensively. Given these limitations, we recommend avoiding the routine use of continuous EFM for low-risk laboring mothers to help reduce the rising number of operative deliveries, particularly cesarean sections. Our findings should be interpreted with caution, and further research with adequate resources is needed to draw definitive conclusions.
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AIM: This study aimed to explore student midwives' theoretical knowledge of intrapartum intermittent auscultation, their confidence in, and their experience of this mode of fetal monitoring. DESIGN AND SETTING: An online cross-section survey with closed and open questions. Descriptive statistics were used to analyse participants' intermittent auscultation knowledge, confidence, and experience. Reflexive thematic analysis was used to identify patterns within the free text about participants' experiences. PARTICIPANTS: Undergraduate midwifery students (n = 303) from Nursing and Midwifery Council-approved educational institutions within the United Kingdom. FINDINGS: Most participants demonstrated good theoretical knowledge. They had witnessed the technique being used in clinical practice, and when performed, the practice was reported to be in line with national guidance. In closed questions, participants reported feeling confident in their intermittent auscultation skills; however, these data contrasted with free-text responses. CONCLUSION: This cross-sectional survey found that student midwives possess adequate knowledge of intermittent auscultation. However, reflecting individual clinical experiences, their confidence in their ability to perform intermittent auscultation varied. A lack of opportunity to practice intermittent auscultation, organisational culture, and midwives' preferences have caused student midwives to question their capabilities with this essential clinical skill, leaving some with doubt about their competency close to registration.
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Compétence clinique , Élève infirmier , Humains , Études transversales , Femelle , Royaume-Uni , Élève infirmier/statistiques et données numériques , Élève infirmier/psychologie , Enquêtes et questionnaires , Adulte , Compétence clinique/normes , Compétence clinique/statistiques et données numériques , Grossesse , Infirmières sages-femmes/statistiques et données numériques , Infirmières sages-femmes/enseignement et éducation , Infirmières sages-femmes/psychologie , Rythme cardiaque foetal/physiologie , Profession de sage-femme/enseignement et éducation , Profession de sage-femme/méthodes , Profession de sage-femme/statistiques et données numériques , Formation au diplôme infirmier (USA)/méthodes , Auscultation/méthodes , Auscultation/statistiques et données numériques , Auscultation/normesRÉSUMÉ
OBJECTIVE: In most high-income countries, the cardiotocography and handheld Doppler device have replaced the Pinard stethoscope for intrapartum foetal monitoring. As a result, the skills required to use the Pinard are rapidly disappearing from midwifery. The aim of this study was thus to illuminate the knowledge before it is lost, by exploring the practice, skills and experience of Norwegian midwives familiar with the Pinard for intrapartum foetal monitoring. We included midwives who still regularly use the Pinard in their current practice in a variety of birth settings, and those who used the Pinard in the era prior to the introduction of the CTG. DESIGN: This study followed a qualitative descriptive design based on mainly focus group interviews, but also including one individual interview. The interviews explored the participants` perspective on their practice, skills and experience regarding the use of the Pinard for intrapartum foetal monitoring. Reflexive thematic analysis captured common patterns across the data, and contextualism was used as research paradigm. SETTING AND PARTICIPANTS: In total, 21 midwives with experience using the Pinard for intrapartum foetal monitoring were interviewed. The midwives were either retired and had experience using the Pinard from before the CTG became widespread; worked in an alongside midwifery unit that only oversees low-risk births; or worked in an obstetric unit in a university hospital with an active policy of using the Pinard for intrapartum foetal monitoring. FINDINGS: The analysis resulted in four main themes: "Practice and experience with the Pinard are related to context", "Skills with the Pinard come with work experience", "The Pinard reveals certain characteristics of foetal sound" and "Midwives` experience with the benefits of using the Pinard". The midwives considered the context for using the Pinard for intrapartum foetal monitoring relevant. The e availability of technology and applicable situations for using the Pinard influenced how and when they use the Pinard. They further underpinned training and work experience as important for feeling secure when using the Pinard, and this experience made them recognize normal and abnormal foetal sounds. Defining and characterizing these sounds appeared difficult for the midwives, however, and they hesitated and imitated the sound. The midwives felt that the Pinard is beneficial for both the labouring woman and the midwife, as the Pinard's features bring them closer to the labouring woman and help calm the birth suite. They also felt that the Pinard adds further information about the birth and birth process, such as foetal lie, rotation and descent. KEYCONCLUSIONS: Norwegian midwives' practice, and experiences in using the Pinard for intrapartum foetal monitoring are connected to context as technological development and applicable situations. The midwives explained that knowledge obtained through experience gives them skills to differentiate between normal and abnormal foetal sound characteristics, though they found it difficult to define the characteristics themselves. Using the Pinard stethoscope during birth calms the birth suite and brings the midwife closer to the labouring woman.
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Travail obstétrical , Profession de sage-femme , Infirmières sages-femmes , Stéthoscopes , Cardiotocographie/méthodes , Femelle , Groupes de discussion , Humains , Profession de sage-femme/méthodes , Grossesse , Recherche qualitativeRÉSUMÉ
BACKGROUND: There is an overuse of cardiotocography for intrapartum fetal monitoring for low-risk women in high-income countries, despite recommendations from evidence-based guidelines. AIM: To understand why midwives use cardiotocography for low-risk women despite evidence-based recommendations and to understand the roles of the cardiotocograph machine. METHOD: This qualitative study used focus groups for data collection. Thirty-one midwives and three student midwives participated from four different countries: New Zealand, Australia, Denmark, and Norway. Constant comparative analysis, informed by an actor-network theory framework, was the method of data analysis. FINDINGS: Cardiotocography was multifaceted and influenced all attendants in the birth environment. The cardiotocograph itself is assigned different roles within the complex networks surrounding childbirth. The cardiotocograph's roles were as a babysitter, the midwives' partner, an agent of shared responsibility, a protector that 'covers your back', a disturber of normal birth, and a requested guest. DISCUSSION: The application of the actor-network theory enabled us to understand how midwives perceive cardiotocography. The assigned roles of the cardiotocograph shape its everyday use more than evidence-based guidelines. Discussion of these inconsistencies must inform the use of cardiotocography in the care of women with low-risk pregnancies. CONCLUSION: We found that the cardiotocograph is a multifaceted actant that influences practice by performing different roles. Drawing on this study, we suggest that actor-network theory could be a helpful theoretical perspective to critically reflect upon the increasing use of technologies within maternity care.
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Services de santé maternelle , Profession de sage-femme , Femelle , Grossesse , Humains , Cardiotocographie/méthodes , Groupes de discussion , ParturitionRÉSUMÉ
Intermittent auscultation (IA) of fetal heart has become acceptable in low risk labors even in the developed countries. However, the instances of birth asphyxia occur despite adhering to the guidelines. Such outcomes need not be the inherent limitations of IA, but improvements in the IA regime are highly desirable. The systematic analyses of available studies have been unhelpful to ascertain an optimal regime or suggest improvements. This analytical review uses detailed modeling and reasoning to examine/propose safe and effective regime. It counters a misconception that the Doppler-device is not superior to Pinard stethoscope in usability, accuracy and thereby decision making. Importantly, the Doppler-device should not be used to actually count the fetal heart tones (like a Pinard stethoscope) as insisted by many guidelines. The review demonstrates that counting to 120-160 over a minute is arduous, superfluous and fraught with fallacies and risks. Observation of the digital read-out of the fetal heart rate (FHR) and its trend during the auscultation duration is far more informative. IA should focus on the two FHR parameters namely the baseline and late decelerations. Detection of additional FHR changes like overshoots, cycling or accelerations do not add value. Doppler-device FHR readouts over a steady pattern (commonly just before the contraction) best represent the baseline. FHR observation (IA) should commence in the later part of the contraction and continue till the beginning of next contraction and need not arbitrarily end at 1 min (a legacy of preoccupation with actual counting). Heightened awareness is required to detect late decelerations at the end of contractions. It would suffice to perform IA over a couple of contractions every 20-30 min during the first stage of labor. This improved methodology would avoid mistakes and improve the detection of FHR abnormalities to enhance patient safety in future practice guidelines.
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Rythme cardiaque foetal , Travail obstétrical , Auscultation/méthodes , Femelle , Surveillance de l'activité foetale/méthodes , Rythme cardiaque , Rythme cardiaque foetal/physiologie , Humains , Travail obstétrical/physiologie , Grossesse , Reproductibilité des résultatsRÉSUMÉ
Perinatal care leaders at a community hospital located in the Denver, Colorado metropolitan area searched for an innovative way to provide a low-intervention option that promoted physiologic birth for women seeking intrapartum care. This reasonably priced project focused on the transformation of traditional labor and delivery rooms into birth suites and included installation of birth slings, full-size beds with home-like mattresses, new sleep sofas for the partners, and the removal of computer screens and electronic fetal monitors. In addition, the team wrote a specific birth suite policy, provided nurse education focused on intermittent auscultation and labor support techniques, and developed a birth suite curriculum for patient education. This innovative model of care demonstrated outcomes similar to those seen in community-based birth centers and received positive feedback from families who labored and gave birth in these suites. In the instance when the birth suite is no longer the appropriate environment for intrapartum care secondary to risk factors, a woman's preference, or obstetric emergency management, this model allows for expeditious transfer of the woman or newborn to a location where an appropriate higher level of care can be provided. Converting 2 labor and delivery rooms to low-intervention birth suites required minimal funding and enabled a community hospital in Colorado to expand its perinatal services to women who are seeking low-intervention birth options that promote physiologic birth.
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Centres de naissance , Travail obstétrical , Accouchement (procédure) , Femelle , Hôpitaux communautaires , Humains , Nouveau-né , Parturition , GrossesseRÉSUMÉ
OBJECTIVES: The purpose of this literature's review is to provide recommendations for measures to assess fetal "well-being" at admission and during labor in order to identify a non-reassuring fetal condition. METHODS: Consultation of the Medline database, and of national and international guidelines. RESULTS: Two fetal heart rate monitoring techniques are available at admission and during labor. In comparison with intermittent auscultation (AI), continuous cardiotocography (CTG) monitoring was associated, in a meta-analysis involving 13 trials including more than 37,000 women, with a reduction in RR neonatal seizures by half. Relative risk (RR)=0.50 with a 95% CI [0.31-0.80] without significant difference objectified with respect to cerebral palsy RR=1.75 95% CI [0.84-3.63]. In contrast, a significant increase in cesarean sections was associated with continuous CTG RR=1.63 95% CI [1.29-2.07] and women were also at greater risk for operative vaginal delivery RR=1.15 95% CI [1.01-1.33]. Current results are insufficient to demonstrate the actual impact of surveillance methods (continuous or discontinuous) on the overall perinatal mortality rate. Larger randomized trials remain to be conducted. CONCLUSION: The systematic search for the confirmation of the reassuring character of the fetal state at admission and during labor makes it possible to identify intrapartum hypoxic events.
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Travail obstétrical , Profession de sage-femme , Cardiotocographie , Accouchement (procédure) , Femelle , Surveillance de l'activité foetale , Humains , Nouveau-né , GrossesseRÉSUMÉ
OBJECTIVE: International and national intrapartum fetal monitoring guidelines recommend intermittent auscultation in low-risk women, and admission cardiotocography and continuous cardiotocography in high-risk women. The present study aimed to investigate fetal monitoring practices for low- and high-risk women in two hospitals in Norway, and if practice were according to national and international guidelines. STUDY DESIGN: To this cross sectional study, data on methods of fetal monitoring and women's risk status were collected from the patient journals of 998 women with intended vaginal birth in 2017 and 2018. MAIN OUTCOME MEASURES: Type of fetal monitoring related to risk status. RESULTS: On admission, 401 (40%) of the women were classified as low-risk and 597 (60%) as high-risk. An admission cardiotocography was reported for 327 (82%) low-risk women and 554 (93%) high-risk women. Of the low-risk women, 187 (47%) remained low-risk throughout labor. During labor, 99 (53%) of the women that remained low-risk were monitored with intermittent auscultation, 62 (33%) with cardiotocography, 24 (13%) with partial cardiotocography, and two (1%) had no monitoring documented. In the high-risk women, intermittent auscultation was used for 11 (2%) during labor, cardiotocography for 544 (91%), partial cardiotocography for 35 (6%), and seven (1%) women had no monitoring documented. CONCLUSIONS: The majority of low-risk women had an admission cardiotocography and during labor many low-risk women were monitored with continuous cardiotocography. This is not in accordance with guidelines which recommend intermittent auscultation. In addition, almost one-tenth of high-risk women were not monitored with continuous cardiotocography, as recommended.
Sujet(s)
Cardiotocographie/soins infirmiers , Souffrance foetale/diagnostic , Surveillance de l'activité foetale/méthodes , Rythme cardiaque foetal/physiologie , Cardiotocographie/méthodes , Études transversales , Femelle , Humains , Norvège , GrossesseRÉSUMÉ
OBJECTIVE: To present evidence and recommendations regarding use, classification, interpretation, response, and documentation of fetal surveillance in the intrapartum period and to provide information to help minimize the risk of birth asphyxia while maintaining the lowest possible rate of obstetrical intervention. INTENDED USERS: Members of intrapartum care teams, including but not limited to obstetricians, family physicians, midwives and nurses, and their learners TARGET POPULATION: Intrapartum women OPTIONS: All methods of uterine activity assessment and fetal heart rate surveillance were considered in developing this document. OUTCOMES: The impact, benefits, and risks of different methods of surveillance on the diverse maternal-fetal health conditions have been reviewed based on current evidence and expert opinion. No fetal surveillance method will provide 100% detection of fetal compromise; thus, all FHS methods are viewed as screening tests. As the evidence continues to evolve, caregivers from all disciplines are encouraged to attend evidence-based Canadian educational programs every 2 years. EVIDENCE: Literature published between January 1976 and February 2019 was reviewed. Medline, the Cochrane Database, and international guidelines were used to search the literature for all studies on intrapartum fetal surveillance. VALIDATION METHODS: The principal and contributing authors agreed to the content and recommendations. The Board of the Society of Obstetricians and Gynaecologists of Canada approved the final draft for publication. The level of evidence has been determined using the criteria and classifications of the Canadian Task Force on Preventive Health Care. BENEFITS, HARM, AND COSTS: Consistent interdisciplinary use of the guideline, appropriate equipment, and trained professional staff enhances safe intrapartum care. Women and their support person(s) should be informed of the benefits and harms of different methods of fetal health surveillance. RECOMMENDATIONS: CommunicationSupport During Active LabourPrinciples of Intrapartum Fetal SurveillanceSelecting the Method of Fetal Heart Rate Monitoring: Intermittent Auscultation or Electronic Fetal MonitoringPaper SpeedAdmission AssessmentsEpidural AnalgesiaIntermittent Auscultation in LabourElectronic Fetal Monitoring in LabourClassification of Intrapartum Fetal SurveillanceMaternal Heart RateFetal Health Surveillance Assessment in the Active Second Stage of LabourIntrauterine ResuscitationDigital Fetal Scalp StimulationFetal Scalp Blood SamplingUmbilical Cord Blood GasesDocumentationFetal Surveillance Technology Not RecommendedFetal Health Surveillance Education.
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Asphyxie néonatale , Surveillance de l'activité foetale , Rythme cardiaque foetal/physiologie , Prise en charge prénatale/normes , Canada , Consensus , Femelle , Humains , Nouveau-né , GrossesseRÉSUMÉ
BACKGROUND: The majority of the world's perinatal deaths occur in low- and middle-income countries. A substantial proportion occurs intrapartum and is avoidable with better care. At a low-resource tertiary hospital, this study assessed the quality of intrapartum care and adherence to locally-tailored clinical guidelines. METHODS: A non-participatory, structured, direct observation study was held at Mnazi Mmoja Hospital, Zanzibar, Tanzania, between October and November 2016. Women in active labour were followed and structure, processes of labour care and outcomes of care systematically recorded. Descriptive analyses were performed on the labour observations and compared to local guidelines and supplemented by qualitative findings. A Poisson regression analysis assessed factors affecting foetal heart rate monitoring (FHRM) guidelines adherence. RESULTS: 161 labouring women were observed. The nurse/midwife-to-labouring-women ratio of 1:4, resulted in doctors providing a significant part of intrapartum monitoring. Care during labour and two-thirds of deliveries was provided in a one-room labour ward with shared beds. Screening for privacy and communication of examination findings were done in 50 and 34%, respectively. For the majority, there was delayed recognition of labour progress and insufficient support in second stage of labour. While FHRM was generally performed suboptimally with a median interval of 105 (interquartile range 57-160) minutes, occurrence of an intrapartum risk event (non-reassuring FHR, oxytocin use or poor progress) increased assessment frequency significantly (rate ratio 1.32 (CI 1.09-1.58)). CONCLUSIONS: Neither international nor locally-adapted standards of intrapartum routine care were optimally achieved. This was most likely due to a grossly inadequate capacity of birth attendants; without whom innovative interventions at birth are unlikely to succeed. This calls for international and local stakeholders to address the root causes of unsafe intrafacility care in low-resource settings, including the number of skilled birth attendants required for safe and respectful births.
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Accouchement (procédure)/statistiques et données numériques , Pays en voie de développement , Adhésion aux directives/statistiques et données numériques , Centres de soins tertiaires/statistiques et données numériques , Adulte , Accouchement (procédure)/normes , Femelle , Humains , Services de santé maternelle/normes , Services de santé maternelle/statistiques et données numériques , Grossesse , Études prospectives , Tanzanie , Jeune adulteRÉSUMÉ
Background: In Uganda, perinatal mortality is 38 per 1000 pregnancies. One-third of these deaths are due to birth asphyxia. Adequate fetal heart rate (FHR) monitoring during labor may detect birth asphyxia but little is known about monitoring practices in low resource settings.Objective: To explore FHR monitoring practices among health workers at a public hospital in Northern Uganda.Methods: A sequential explanatory mixed methods study was conducted by reviewing 251 maternal records and conducting 11 interviews and two focus group discussions with health workers complemented by observations of 42 women in labor until delivery. Quantitative data were summarized using frequencies and percentages. Content analysis was used for qualitative data.Results: FHR was assessed in 235/251 (93.6%) of records at admission. Health workers documented the FHR at least once in 175/228 (76.8%) of cases during the first stage of labor compared to observed 17/25 (68.0%) cases. Median intervals between FHR monitoring were 30 (IQR 30-120) minutes in patients' records versus 139 (IQR 87-662) minutes according to observations. Observations suggested no monitoring of FHR during the second stage of labor but records indicated monitoring in 3.2% of cases. Reported barriers to adequate FHR monitoring were inadequate number of staff and monitoring devices, institutional challenges such as few beds, documentation problems and perceived non-compliant women not reporting for repeated checks during the first stage of labor. Health workers demonstrated knowledge of national FHR monitoring guidelines and acknowledged that practice was different.Conclusions: When compared to national and international guidelines, FHR monitoring is sub-optimal in the studied setting. Approximately one in four women was not monitored during the first stage of labor. Barriers to appropriate FHR monitoring included shortage of staff and devices, institutional challenges and mother's negative attitudes. These barriers need to be addressed in order to reduce neonatal mortality.
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Surveillance de l'activité foetale/normes , Main-d'oeuvre en santé/statistiques et données numériques , Rythme cardiaque foetal/physiologie , Hôpitaux publics/statistiques et données numériques , Travail obstétrical/physiologie , Femelle , Adhésion aux directives , Personnel de santé , Humains , Nourrisson , Nouveau-né , Entretiens comme sujet , Guides de bonnes pratiques cliniques comme sujet , Grossesse , OugandaRÉSUMÉ
BACKGROUND: All guidelines regarding electronic fetal heart monitoring (EFM) before 2008 were designed to avoid more hypoxia than acidosis. In addition, the results of the Cochrane meta-analysis of 2013 do not show a significant improvement in neonatal outcomes using EFM or intermittent auscultation (IA). OBJECTIVES: We retrospectively evaluated the results on delivery outcomes arising from a comparison between EFM and IA during labor of 2 specific and high-quality trials. We hypothesized that revisiting the delivery outcomes through the adoption of the recent National Institute of Child Health and Human Development (NICHHD) guidelines, the reported delivery outcomes would be different. MATERIAL AND METHODS: The study retrospectively evaluated the results on delivery outcomes arising from the comparison between EFM and IA during labor of the "Dublin trial" and "Vintzileos trial" published, respectively, in 1985 and 1993. A translational model was constructed to recalculate these results, applying a correction factor to estimate the number of pathological patterns using the NICHHD guidelines for EFM. RESULTS: After the reevaluation of the 2 trials using the proposed correction factor, the comparison of the recalculated cesarean section and operative delivery rates for fetal distress between EFM and IA group were no longer statistically significant, both in the Dublin trial and Vintzileos trial. Even the comparison of the recalculated incidence of the rate of non-reassuring fetal heart rate (FHR) patterns in the EFM and IA groups has not given any indication of significance for the Vintzileos trial. CONCLUSIONS: Our results lead to reconsidering the results of the Dublin trial and Vintzileos trial in terms of operational rates of births, hypothesizing that these results would have been significantly lower if FHR traces were interpreted using the current NICHHD guidelines, which aim to identify potential acidotic fetuses rather than hypoxic ones.
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Césarienne , Souffrance foetale/diagnostic , Auscultation cardiaque/méthodes , Rythme cardiaque foetal , Guides de bonnes pratiques cliniques comme sujet , Enfant , Femelle , Coeur foetal , Humains , National Institute of Child Health and Human Development (USA) , Grossesse , Études rétrospectives , États-UnisRÉSUMÉ
BACKGROUND: Hypoxia during labor contributes to 2.2 million intrapartum and early neonatal deaths each year. An additional 0.6-1.0 million cases of life-long disability occur because of fetal hypoxia during labor. It is known that fetal heart rate changes in labor correspond to hypoxia and neurologic compromise, but a reliable, low-cost method for detecting these changes is not available. In this study we sought to compare the ability of a handheld Doppler device to detect accelerations as part of the fetal scalp stimulation test and to compare the diagnostic performance of routine intermittent auscultation with auscultation that is augmented with fetal scalp stimulation. METHODS: This non-randomized, pre- and post-diagnostic trial was conducted with 568 maternal-fetus pairs at Kilimanjaro Christian Medical Center in Moshi, Tanzania. The first objective was to determine whether a handheld Doppler device could detect fetal accelerations in labor with reasonable accuracy as compared with a cardiotocography machine. We performed the fetal scalp stimulation test on 50 fetuses during labor using both a handheld Doppler and a cardiotocography machine and compared the outcomes for correlation using the kappa correlation coefficient. During the second objective, two groups of laboring women were monitored either with intermittent auscultation alone per routine protocol (N = 251) or with intermittent auscultation augmented with fetal scalp stimulation per study protocol(N = 267). Diagnostic accuracy of the monitoring method was determined by comparing umbilical cord blood gases immediately after birth with the predicted state of the baby based on monitoring. The analyses included sensitivity, specificity, and positive and negative predictive values. RESULTS: The prevalence of fetal acidemia ranged from 15 to 20%. Adding the fetal scalp stimulation test to intermittent auscultation protocols improved the performance of intermittent auscultation for detecting severe acidemia (pH < 7.0) from 27 to 70% (p = 0.032). The negative predictive value of intermittent auscultation augmented with the fetal scalp stimulation test ranged from 88 to 99% for mild (pH < 7.2) to severe fetal acidemia. CONCLUSIONS: The fetal scalp stimulation test, conducted with a handheld Doppler, is feasible and accurate in a limited resource setting. It is a low-cost solution that merits further evaluation to reduce intrapartum stillbirth and neonatal death in low-income countries. TRIAL REGISTRATION: ClinicalTrials.gov ( NCT02862925 ).
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Hypoxie foetale/diagnostic , Surveillance de l'activité foetale/méthodes , Auscultation cardiaque/méthodes , Rythme cardiaque foetal/physiologie , Échographie-doppler/instrumentation , Échocardiographie-doppler/méthodes , Femelle , Humains , Travail obstétrical/physiologie , Grossesse , Cuir chevelu , TanzanieRÉSUMÉ
OBJECTIVE: To determine acceptable and achievable strategies of intrapartum fetal monitoring in busy low-resource settings. METHODS: Three rounds of online Delphi surveys were conducted between January 1 and October 31, 2017. International experts with experience in low-resource settings scored the importance of intrapartum fetal monitoring methods. RESULTS: 71 experts completed all three rounds (28 midwives, 43 obstetricians). Consensus was reached on (1) need for an admission test, (2) handheld Doppler for intrapartum fetal monitoring, (3) intermittent auscultation (IA) every 30 minutes for low-risk pregnancies during the first stage of labor and after every contraction for high-risk pregnancies in the second stage, (4) contraction monitoring hourly for low-risk pregnancies in the first stage, and (5) adjunctive tests. Consensus was not reached on frequency of IA or contraction monitoring for high-risk women in the first stage or low-risk women in the second stage of labor. CONCLUSION: There is a gap between international recommendations and what is physically possible in many labor wards in low-resource settings. Research on how to effectively implement the consensus on fetal assessment at admission and use of handheld Doppler during labor and delivery is crucial to support staff in achieving the best possible care in low-resource settings.
Sujet(s)
Surveillance de l'activité foetale/normes , Rythme cardiaque foetal , Adulte , Consensus , Méthode Delphi , Femelle , Humains , Premier stade du travail , Second stade du travail , Pauvreté , Grossesse , Enquêtes et questionnaires , Échographie-dopplerRÉSUMÉ
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.
Sujet(s)
Tests diagnostiques courants/méthodes , Surveillance de l'activité foetale/méthodes , Rythme cardiaque foetal/physiologie , Prise en charge prénatale/méthodes , Cardiotocographie/méthodes , Électrocardiographie/méthodes , Femelle , Humains , Norvège , GrossesseRÉSUMÉ
OBJECTIVE: To assess the effect of admission cardiotocography (ACTG) versus intermittent auscultation (IA) of the fetal heart (FH) in low-risk pregnancy during assessment for possible labour on caesarean section rates. DESIGN: A parallel multicentre randomised trial. SETTING: Three maternity units in the Republic of Ireland. POPULATION: Healthy, low-risk pregnant women, at term and ≥ 18 years old, who provided written informed consent. METHODS: Women were randomised to receive IA of the FH or 20 minutes ACTG on admission for possible labour onset, using remote telephone randomisation. Both groups received IA during labour, with conversion to continuous CTG as clinically indicated. MAIN OUTCOME MEASURES: Caesarean section (primary outcome), obstetric interventions (e.g. continuous CTG during labour, fetal blood sampling, augmentation of labour) and neonatal morbidity (e.g. metabolic acidosis, admission to the neonatal intensive care unit, neonatal death). RESULTS: Based on 3034 women (1513 and 1521 randomised to IA and ACTG, respectively), there was no statistical difference between the groups in caesarean section [130 (8.6%) and 105 (6.9%) for IA and ACTG groups, respectively; relative risk (RR) 1.24; 95% CI 0.97-1.58], or in any other outcome except for use of continuous CTG during labour, which was lower in the IA group (RR 0.90, 95% CI 0.86-0.93). CONCLUSION: Our study demonstrates no differences in obstetric or neonatal outcomes between IA and ACTG for women with possible labour onset, other than an increased risk for continuous CTG in women receiving ACTG. TWEETABLE ABSTRACT: No differences in outcomes between intermittent auscultation and admission cardiotocography for women with possible labour onset.
Sujet(s)
Cardiotocographie , Auscultation cardiaque , Rythme cardiaque foetal , Début du travail/physiologie , Adulte , Césarienne/statistiques et données numériques , Femelle , Humains , Grossesse , Issue de la grossesse , Études rétrospectivesRÉSUMÉ
OBJECTIVE: This guideline provides new recommendations pertaining to the application and documentation of fetal surveillance in the intrapartum period that will decrease the incidence of birth asphyxia while maintaining the lowest possible rate of obstetrical intervention. Pregnancies with and without risk factors for adverse perinatal outcomes are considered. This guideline presents an alternative classification system for antenatal fetal non-stress testing and intrapartum electronic fetal surveillance to what has been used previously. This guideline is intended for use by all health professionals who provide intrapartum care in Canada. OPTIONS: Consideration has been given to all methods of fetal surveillance currently available in Canada. OUTCOMES: Short- and long-term outcomes that may indicate the presence of birth asphyxia were considered. The associated rates of operative and other labour interventions were also considered. EVIDENCE: A comprehensive review of randomized controlled trials published between January 1996 and March 2007 was undertaken, and MEDLINE and the Cochrane Database were used to search the literature for all new studies on fetal surveillance antepartum. The level of evidence has been determined using the criteria and classifications of the Canadian Task Force on Preventive Health Care (Table 1). SPONSOR: This consensus guideline was jointly developed by the Society of Obstetricians and Gynaecologists of Canada and the British Columbia Perinatal Health Program (formerly the British Columbia Reproductive Care Program or BCRCP) and was partly supported by an unrestricted educational grant from the British Columbia Perinatal Health Program. RECOMMENDATION 1: LABOUR SUPPORT DURING ACTIVE LABOUR: RECOMMENDATION 2: PROFESSIONAL ONE-TO ONE CARE AND INTRAPARTUM FETAL SURVEILLANCE: RECOMMENDATION 3: INTERMITTENT AUSCULTATION IN LABOUR: RECOMMENDATION 4: ADMISSION FETAL HEART TEST: RECOMMENDATION 5: INTRAPARTUM FETAL SURVEILLANCE FOR WOMEN WITH RISK FACTORS FOR ADVERSE PERINATAL OUTCOME: When a normal tracing is identified, it may be appropriate to interrupt the electronic fetal monitoring tracing for up to 30 minutes to facilitate periods of ambulation, bathing, or position change, providing that (1) the maternal-fetal condition is stable and (2) if oxytocin is being administered, the infusion rate is not increased (III-B). RECOMMENDATION 6: DIGITAL FETAL SCALP STIMULATION: RECOMMENDATION 7: FETAL SCALP BLOOD SAMPLING: RECOMMENDATION 8: UMBILICAL CORD BLOOD GASES: RECOMMENDATION 9: FETAL PULSE OXIMETRY: RECOMMENDATION 10: ST WAVEFORM ANALYSIS: RECOMMENDATION 11: INTRAPARTUM FETAL SCALP LACTATE TESTING.