Labor Complication

Obesity increases the risk of pregnancy complications, including puerperal infections and cesarean delivery, and risk rises with increasing body mass index (BMI). Since obese women are more likely to have comorbidities that would necessitate delivery prior to their due date (i.e. prior to 40 weeks gestation), and class III obesity specifically is an indication for delivery by 39 weeks, these patients have a high rate of labor induction. In nulliparous women from the general population (obese and non-obese), labor induction at 39 weeks (compared to expectant management) is associated with less maternal morbidity and a lower cesarean rate. Researchers previously conducted a pilot randomized placebo-controlled trial in obese, nulliparous women undergoing labor induction at term and found that the cesarean delivery rate was lower in women who received a prophylactic antibiotic regimen during labor compared with those who received the placebo. Researchers proposed multi-center trial aims to test this hypothesis in a large sample with adequate power to determine whether prophylactic antibiotics during labor are associated with a decrease in the rate of cesarean delivery in term, nulliparous, obese women. If the findings from the pilot trial are confirmed, this would represent a novel intervention to decrease the cesarean delivery rate in a subset of women at highest risk for cesarean-related complications.

Freedom of movement and the ability to walk are crucial during the first stage of labor, potentially reducing labor duration, cesarean section risk, epidural analgesia use, and bladder catheterization. While the clinical effects of ambulation during labor remain controversial, there is a consensus on its positive impact on the birthing experience and satisfaction. Epidural analgesia remains the gold standard for pain control during labor, with a utilization rate of 82% in France. Recent advancements in obstetric analgesia have allowed for lower doses of analgesics, often administered via patient-controlled analgesia, which maintains the potential for ambulation during labor. However, only a small number of maternity units in France offer this technique. The main barriers include organizational issues such as unsuitable facilities, lack of wireless telemetry, and potential risks such as falls and hypotension. Significant changes in gait characteristics are observed throughout pregnancy, particularly during the third trimester, and are studied in laboratory settings using video capture and analysis. Gait during labor is influenced by pain, fetal progression, and anatomical changes in the pelvis. The presence of epidural analgesia, where local anesthetics likely affect neural transmission, may impact motor commands and sensory feedback, further altering gait characteristics. These biomechanical aspects of labor remain understudied. Wearable inertial sensors show promise in maternal health monitoring by providing real-time data for motion and gait studies. However, their application has not been described or validated during labor, particularly in walking conditions. Continuous dynamic study of gait in these conditions could enable non-invasive, non-intrusive monitoring of analgesia effectiveness, fall risk prediction, and labor progression analysis. The aim of this feasibility study is to validate the use of wearable inertial sensors to quantify movements and characterize gait during the first stage of labor, both with and without low-dose epidural analgesia.

This is a randomized controlled trial investigating the utility of oxytocin administration in the second stage of labor.

The goal of this randomized trial is to test if changing a person's position in labor can increase the chances of delivering their baby vaginally. Specifically, it aims to answer the questions: * In fetuses who are facing upwards (occiput posterior, OP) or sideways (occiput transverse, OT) during labor, does changing the patient's position during active labor to a side-lying posture with a peanut ball increase the chances of them having a successful, spontaneous vaginal delivery? * Does changing the patient's position in active labor affect the position of the baby at the time of delivery? * Do intentional position changes in labor impact patient-perceived autonomy during their labor and delivery experience? Participants will: * Receive an ultrasound during labor to determine the position of their baby * Be asked to adopt a specific position in labor (side-lying with peanut ball) if they are randomized to the study group * Receive additional ultrasounds during labor to assess their baby's position * Fill out a questionnaire about their labor experience following the delivery of their baby

Appropriate and timely care during birth is critical to the survival and health of women and their babies. In 2020, the World Health Organization (WHO) presented the Labour Care Guide (LCG) as the new recommended tool for monitoring birth and assessing progression, replacing the WHO partograph. This evidence-based guide was designed to ensure improved quality and safety of care, and to avoid unnecessary interventions during birth. The LCG was developed to be used in all settings globally, but it has only been tested in health facilities in South America, Asia and Africa, while it has not been tested in high-income settings. Implementing a new guideline for monitoring birth is a comprehensive operation that will affect both the national economy, health systems, and individual patients; therefore, further research on the possible advantages is needed before national enrolment. Hence, the trial proposed in this application is crucial to form the required foundation of knowledge. The trial will be conducted in labour wards at ten hospitals, covering all health regions in Norway, and the established Norwegian Research Network for Clinical Studies in Obstetrics (NORBIRTH), with dedicated local principal investigators, will provide a robust research environment. This trial will test the effect of the LCG. Results from this trial will provide knowledge needed to determine a future implementation of the LCG in Norway.

The objective of the study is to investigate the FRI's ability to identify cases requiring urgent intervention which will present an adverse perinatal outcome (respiratory acidosis, metabolic acidosis, Apgar index, etc.) compared to the classical interpretation of CTG. Patients whose CTG in labor will be considered non-reassuring will be enrolled and randomized into two groups. The "Fetal Reserve Index" algorithm will be applied to the first group of patients. The second group of patients will, however, be managed according to the usual protocols internal management.

Over the past years, the rates of labor induction have increased steadily, and at present more than one in four births occurs after induced labor in Norway. There is evidence that several groups of women benefit from labor induction, including those with preeclampsia (1), postdate pregnancy, diabetes, a large-for-gestational-age fetus, gestational diabetes, prelabor rupture of membranes at term, preterm prelabor rupture of membranes, twin pregnancy and intrahepatic cholestasis of pregnancy. At the same time, induction of labor is an independent risk factor for adverse obstetric outcomes, including cesarean section, operative vaginal delivery, chorioamnionitis, labor dystocia, prolonged labor, uterine rupture, and neonatal pH \< 7.10. A recent Norwegian nationwide clinical practice pilot evaluation demonstrated that the rate of intervention was high, and that as many as 44% of women with labor induction experienced operative delivery. Given that induction of labor is a common procedure (15 000 women per year in Norway) and increases risk of several major obstetric complications, interventions that may reduce operative births and facilitate safe deliveries are highly warranted. Bicarbonate and butylscopolamine bromide have been used in smaller studies in order to shorten labor. The medications seem to be safe with a low frequency of adverse events. The rationale of the present study is therefore to assess the efficacy of oral bicarbonate and intravenous butylscopolamine bromide on facilitating spontaneous (non-operative) delivery in pregnant female participants with induction of labor.

This is a prospective, randomized trial to determine whether the use of sonographic parameters during labor results in less intrapartum infection compared to traditional invasive examination. Other secondary outcomes include maternal satisfaction and overall birth outcomes.