Evaluation of Epidural Analgesia Use During Labor and Infection in Full-term Neonates Delivered Vaginally

Acupoint stimulation combined with transcutaneous electrical nerve stimulation on labour pain: A stepped wedge cluster randomised controlled trial

BACKGROUND

Labour pain management remains a critical concern, as pharmacological methods often carry side effects and potential risks. Non-pharmacological approaches, such as acupoint stimulation and transcutaneous electrical nerve stimulation (TENS) are being explored as viable alternatives. However, evidence regarding their combined use and overall effect on maternal and fetal outcomes remains limited.

AIM

This study aimed to evaluate the effectiveness of acupoint stimulation combined with TENS on labour pain, delivery outcomes, and childbirth experience for women undergoing a trial of labour.

METHODS

A parallel multi-arm, stepped wedge cluster randomized controlled trial was conducted with 600 women randomized into four groups: TENS, acupoint stimulation, TENS combined with acupoint stimulation, and a control group. The study assessed Visual Analog Scale (VAS) scores, Non-Pharmacological to Pharmacological Pain Management Interval (NPI), the rate of epidural analgesia, delivery outcomes, and childbirth experience.

RESULTS

After intervention, women's VAS scores in the TENS, acupoint stimulation, and combined groups were significantly lower than the control group at multiple time points (at 30 , 90, 120, 150, 180, 210, 240, and 270 min, P < 0.05). Non-pharmacological to pharmacological pain management intervals (NPIs) were significantly longer in all intervention groups compared to the control group (P < 0.001), with median NPIs ranging from 178 to 183.5 min in the intervention groups versus 104 min in the control group. A positive correlation was observed between NPI and childbirth experience scores (r = 0.101, P < 0.05). No significant differences were found in epidural analgesia rates, delivery outcomes, postpartum bleeding, Apgar scores, labour duration, or perineal tear rates (all P > 0.05). Childbirth experience scores (CEQ) were significantly higher in the TENS and combined groups compared to the control group (P < 0.01).

CONCLUSION

Acupoint stimulation combined with TENS is an effective non-pharmacological approach for alleviating labour pain and enhancing the overall childbirth experience. This integrated method is recommended for incorporation into labour pain management protocols, providing women with a valuable alternative or adjunct to pharmacological interventions.

Effect of epidural labour analgesia on gastric emptying during labour: A prospective controlled study

BACKGROUND

Epidural analgesia is frequently used to alleviate labour pain, and dietary management during labour is of crucial importance. Therefore, this study investigates the impact of epidural analgesia for labour on gastric emptying in parturient women.

METHODS

A total of 70 full-term parturient women were recruited and divided into two groups: the epidural analgesia group (LA, n = 35) and the non-epidural analgesia group (NA, n = 35). Fasting gastric antrum cross-sectional area (CSA0) was assessed using B-mode ultrasonography at T0. Both groups then consumed 300 g of millet porridge (600KJ). Post-meal, CSAs were measured at 60 min (CSA1, T1), 90 min (CSA2, T2), and 120 min (CSA3, T3) using ultrasonography. Pain scores were recorded for both groups at these four time points, and gastric emptying time was noted.

RESULTS

The CSA in the NA group were larger than those in the LA group (CAS1:11.4 ± 0.8 vs 10.2 ± 0.6;CAS2:9.3 ± 0.6 vs 8.3 ± 0.5,CAS3:7.4 ± 0.5 vs 6.5 ± 0.4; P = 0.00). The gastric emptying time in the LA group was shorter than that in the NA group (197.5 ± 27.2 vs. 220.9 ± 29.2, P = 0.00).

CONCLUSIONS

Epidural analgesia facilitates gastric emptying during labour. Therefore, the administration of epidural analgesia during labour does not adversely affect maternal dietary preferences.

PLAIN LANGUAGE SUMMARY

During labour, women often endure severe pain, prompting the widespread use of epidural analgesia for pain relief. However, the dietary considerations for women opting for epidural analgesia during labour have increasingly garnered attention. Numerous studies have now corroborated that moderate food consumption can supply energy to women without posing any detrimental effects. Our research has observed that epidural analgesia can expedite gastric emptying during labour. Previous clinical experience suggested that patients should not eat before or after anesthesia, but this study shows that even if a parturient opts for epidural labor analgesia, she can still continue to consume a certain amount of semi-solid food to provide energy throughout the labor process, without needing to worry about an increased risk of vomiting.

Effects of epidural analgesia at 1 cm cervical dilatation on multiparae: A retrospective cohort study using propensity score-matching

OBJECTIVE

The aim of the present study was to investigate the effects of epidural analgesia (EA) administered at cervical dilatation of 1 cm on multiparae who underwent vaginal delivery.

METHODS

This propensity score-matched retrospective cohort research was conducted between 2021 and 2022. All the singleton multiparae who had previous successful vaginal deliveries and epidural analgesia during this delivery were screened for eligibility. The primary outcome was the effect of EA on the duration of labor. The main secondary outcomes included the incidence of cesarean delivery and umbilical arterial pH.

RESULTS

This study incorporated 686 multiparae who were divided into two cohorts: EA 1 (cervical dilatation = 1 cm, n = 166) and EA 2 (cervical dilatation >1 cm, n = 520). In the propensity score-matched cohort (including 164 women in each group), there were no statistically significant differences in the incidence of cesarean delivery (4 [2.4%] vs 4 [2.4%], P = 1.000), umbilical arterial pH (7.28 ± 0.06 vs 7.28 ± 0.07, P = 0.550) and other secondary outcomes between the two groups. Based on a comparative assessment of the women who delivered vaginally to the Kaplan-Meier curves and propensity score-matching (including 160 women in each group), there was no statistical significance in the duration of the first, second and third stages of labor (log rank P, P = 0.811; P = 0.413; P = 0.773, respectively).

CONCLUSION

Initiation of epidural analgesia at cervical dilatation of 1 cm in multiparae did not cause adverse effects with regard to the duration of labor, increased cesarean deliveries, and bad neonatal outcomes.

Association of epidural analgesia in labor with neurodevelopmental outcomes in premature infants born at <29 weeks of gestational age

OBJECTIVE

To explore associations between epidural administration to mothers in labor with neurodevelopmental outcomes at 3 years corrected age in preterm infants born <29 weeks gestational age.

STUDY DESIGN

Infants born <29 weeks gestational age between 2006 and 2012 were included. Our primary outcome was a composite of death or neurodevelopmental impairment at 3 years corrected age. Infants were divided into those whose mothers did or did not receive epidural analgesia in labor. Univariable and multivariable regression was used for analysis.

RESULTS

There were 548 infants in the no epidural analgesia group and 121 in the epidural analgesia group. The adjusted odds ratio (95%CI) of neurodevelopmental impairment or death in the epidural group was 1.25 (0.82-1.93). Propensity score-matched results were 1.32 (0.79-2.22).

CONCLUSION

Preterm infants born <29 weeks gestational age to mothers who received epidural analgesia during labor were not associated with poor neurodevelopmental outcomes at 3 years corrected age.

Maternal intrapartum fever during epidural labour analgesia: Incidence and influencing factors

BACKGROUND

The management and nursing care of women's temperature during delivery is an important part of clinical obstetrics. We aimed to evaluate maternal intrapartum fever during epidural labour analgesia to provide evidence for the management and care of women in labour.

METHODS

This study was conducted and reported according to the STROBE statement. Women in labour undergoing epidural labour analgesia in our hospital from 1 January 2021 to 31 August 2022 were retrospectively selected. The characteristics of women in labour with and without intrapartum fever were compared. Pearson correlation and logistic regression analysis were used to analyse the influencing factors of postpartum fever.

RESULTS

A total of 196 women in labour were included, the incidence of maternal intrapartum fever in women in labour undergoing epidural analgesia was 27.5%. Pearson correlation analyses showed that BMI, oxytocin use, labour duration, number of vaginal examinations, time from rupture of the foetal membranes to the end of labour and duration of epidural analgesia were all correlated with the occurrence of intrapartum fever (all P < 0.05). Logistic regression analyses indicated that body mass index ≥28 kg/m2 (OR = 1.825), oxytocin use (OR = 2.082), labour duration ≥9.2 h (OR = 2.613), number of vaginal examinations ≥8 (OR = 2.044-3.115), the time from rupture of the foetal membranes to the end of labour ≥250 min (OR = 2.766) and duration of epidural analgesia ≥300 min (OR = 3.106) were risk factors for intrapartum fever in women in labour undergoing epidural analgesia (all P < 0.05).

CONCLUSIONS

Maternal intrapartum fever in women in labour undergoing epidural analgesia is common and influenced by many factors. Nurses should take early preventive care measures according to these factors during epidural analgesia in labour.

COVID-19 Omicron variant infection has minimal impact on maternal and neonatal outcomes: A cross-sectional cohort study

AIM

To explore the impact of the Omicron variant on maternal and neonatal outcomes.

DESIGN

Cross-sectional cohort study of women giving live birth in a single hospital in Shanghai in December 2022.

METHODS

Demographic characteristics, maternal and neonatal outcomes and laboratory testing results were retrieved from medical records. Propensity score matching was used to match COVID-19-positive and -negative women. Differential analysis was used to assess associations between COVID-19 and in-hospital maternal and neonatal outcomes.

RESULTS

A total of 1508 women were included, comprising 729 natural births, 741 caesarean sections and 38 forceps deliveries. After 1:1 matching, 310 clients were included for analysis with each 155 in COVID-19-positive and -negative groups. Higher maternal fever was found in all modes of delivery, and higher preterm birth and lower pH value of blood gas of the umbilical artery in the vaginal delivery subgroup (p < 0.05). Other maternal and neonatal outcomes showed no significant difference between COVID-19-positive and -negative clients.

Continuous care during labor by maternity care assistants in the Netherlands vs care-as-usual: a randomized controlled trial

BACKGROUND

Continuous support during labor has many benefits including lower use of obstetrical interventions. However, implementation remains limited. Insights into birth outcomes and peripartum costs are essential to assess whether continuous care by a maternity care assistant is a potentially (cost) effective program to provide for all women.

OBJECTIVE

Continuous care during labor, provided by maternity care assistants, will reduce the use of epidural analgesia and peripartum costs owing to a reduction in interventions.

STUDY DESIGN

This was a randomized controlled trial comparing continuous support during labor (intervention group) with care-as-usual (control group) with prespecified intention-to-treat and per-protocol analyses. The primary outcome was epidural analgesia use. The secondary outcomes were use of other analgesia, referrals from midwife- to obstetrician-led care, modes of birth, hospital stay, sense of control (evaluated with the Labor Agentry Scale), maternal and neonatal adverse outcomes and peripartum costs. Data were collected using questionnaires. Anticipating incomplete adherence to providing continuous care, both intention-to-treat and per-protocol analyses were planned. Peripartum costs were estimated using a healthcare perspective. Mean costs per woman and cost differences between the intervention and control group were calculated.

RESULTS

The population consisted of 1076 women with 54 exclusions and 30 discontinuations, leaving 992 women to be analyzed (515 continuous care and 477 care-as-usual). Intention-to-treat analyses showed statistically nonsignificant differences between the intervention and control group for epidural use (relative risk, 0.88; 95% confidence interval, 0.74-1.04; P=.14) and peripartum costs (mean difference, € 185.83; 95% confidence interval, -€ 204.22 to € 624.54). Per-protocol analyses showed statistically significant decreases in epidural analgesia (relative risk, 0.64; 95% confidence interval, 0.48-0.84; P=.001), other analgesia (relative risk, 0.59; 95% confidence interval, 0.37-0.94; P=.02), cesarean deliveries (relative risk, 0.53; 95% confidence interval, 0.29-0.95; P=.03) and increase in spontaneous vaginal births (relative risk, 1.09; 95% confidence interval, 1.01-1.18; P=.001) in the intervention group, but difference in total peripartum costs remained statistically nonsignificant (mean difference, € 246.55; 95% confidence interval, -€ 539.14 to € 13.50).

CONCLUSION

If the provision of continuous care given by maternity care assistants during labor can be secured, continuous care leads to more vaginal births and less epidural use, pain medication, and cesarean deliveries while not leading to a difference in peripartum costs compared with care-as-usual.

Epidural-related maternal fever: incidence, pathophysiology, outcomes, and management

Epidural-related maternal fever affects 15% to 25% of patients who receive a labor epidural. Two meta-analyses demonstrated that epidural-related maternal fever is a clinical phenomenon, which is unlikely to be caused by selection bias. All commonly used neuraxial techniques, local anesthetics with or without opioids, and maintenance regimens are associated with epidural-related maternal fever, however, the impact of each component is unknown. Two major theories surrounding epidural-related maternal fever development have been proposed. First, labor epidural analgesia may lead to the development of hyperthermia through a sterile (noninfectious) inflammatory process. This process may involve reduced activation of caspase-1 (a protease involved in cell apoptosis and activation of proinflammatory pathways) secondary to bupivacaine, which impairs the release of the antipyrogenic cytokine, interleukin-1-receptor antagonist, from circulating leucocytes. Detailed mechanistic processes of epidural-related maternal fever remain to be determined. Second, thermoregulatory mechanisms secondary to neuraxial blockade have been proposed, which may also contribute to epidural-related maternal fever development. Currently, there is no prophylactic strategy that can safely prevent epidural-related maternal fever from occurring nor can it easily be distinguished clinically from other causes of intrapartum fever, such as chorioamnionitis. Because intrapartum fever (of any etiology) is associated with adverse outcomes for both the mother and baby, it is important that all parturients who develop intrapartum fever are investigated and treated appropriately, irrespective of labor epidural utilization. Institution of treatment with appropriate antimicrobial therapy is recommended if an infectious cause of fever is suspected. There is currently insufficient evidence to warrant a change in recommendations regarding provision of labor epidural analgesia and the benefits of good quality labor analgesia must continue to be reiterated to expectant mothers.

Procedural analgesic interventions in China: a national survey of 2198 hospitals

Background

Humane treatment requires the provision of appropriate sedation and analgesia during medical diagnosis and treatment. However, limited information is available about the status of procedural analgesic interventions in Chinese hospitals. Therefore, a nationwide survey was established to identify challenges and propose potential improvement strategies.

Methods

Forty-three members of the Pain Group of Chinese Society of Anesthesiology established and reviewed the questionnaire, which included (1) general information on the hospitals, (2) the sedation/analgesia rate in gastrointestinal endoscopy, labor, flexible bronchoscopy, hysteroscopy in China, (3) staff assignments, (4) drug use for procedural analgesic interventions, and (5) difficulties in procedural analgesic interventions. The data were obtained using an online questionnaire sent to the chief anesthesiologists of Chinese hospitals above Grade II or members of the Pain Group of Chinese Society of Anesthesiology.

Results

Valid and complete questionnaires were received from 2198 (44.0%) hospitals, of which 64.5% were Grade III. The overall sedation/analgesia rates were as follows: gastroscopy (50.6%), colonoscopy (53.7%), ERCP (65.9%), induced abortion (67.5%), labor (42.3%), hysteroscopy (67.0%) and fiber bronchoscopy (52.6%). Compared with Grade II hospitals, Grade III hospitals had a higher proportion of procedural analgesic interventions services except for induced abortion. On average (median [IQR]), each anesthesiologist performed 5.7 [2.3—11.4] cases per day, with 7.3 [3.2—13.6] performed in Grade III hospitals and 3.4 [1.8—6.8] performed in Grade II hospitals (z = -7.065, p < 0.001).

Conclusions

Chinese anesthesiologists have made great efforts to achieve procedural analgesic interventions, as evidenced by the increased rate. The uneven health care provided by hospitals at different levels and in different regions and the lack of anesthesiologists are the main barriers to optimal procedural analgesic interventions.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12871-022-01783-6.

Epidural Analgesia Associated with Higher Rate of Neonatal Infection

According to this study: Epidural analgesia during labor was associated with a higher risk of neonatal infection in full-term neonates delivered vaginally.

Comparative evaluation of intrathecal dexmedetomidine and fentanyl as an adjuvant for combined spinal–epidural analgesia for labor

Background:

Combined spinal–epidural technique is a widely accepted and popular modality for labor analgesia. Opioids are being used as adjuvants since long time. Dexmedetomidine is a new drug that is being used as an intrathecal adjuvant.

Aim:

The study aims to compare the safety and efficacy of fentanyl and dexmedetomidine as intrathecal adjuvants in labor analgesia.

Settings and Design:

This was a continuous, prospective, randomized controlled trial with 120 parturients.

Materials and Methods:

After ethical approval and written consent, participants were divided randomly into two groups: Group A – bupivacaine 2.5 mg (0.5 mL diluted to 2 mL) + 20 μg of dexmedetomidine in 1 mL saline intrathecally (total volume: 3 mL) and Group B – bupivacaine 2.5 mg (0.5 mL diluted to 2 mL) + 15 μg of fentanyl in 1 mL saline intrathecally (total volume: 3 mL). Primary outcomes were satisfactory analgesia, mode of delivery, and neonatal outcome. Participants were monitored for the onset and duration of analgesia, degree of motor block, and maternal and fetal side effects.

Results:

A total of 108 parturients reported sufficient analgesia (Group A: 57; Group B: 51), and 74 patients delivered vaginally (Group A: 41; Group B: 44). The rates of normal vaginal delivery were higher in Group B. Group A reported earlier onset of analgesia (61.26 ± 18.23 s) that lasted for longer duration (124.16 ± 26.23 min) than in Group B. There were no serious side effects in any of the groups. Fetal ultrasound revealed attenuation of fetal heart rate variability. The heart rate of newborns was also found to be low in Group A.

Conclusion:

Chances of vaginal delivery are higher with intrathecal fentanyl as an adjuvant. Intensity and duration of analgesia are better with intrathecal dexmedetomidine.