A Swedish register-based study exploring primary postpartum hemorrhage in 405 936 full term vaginal births between 2005 and 2015

Enhancing the induction of labour services at Nottingham University Hospitals NHS Trust: A retrospective cohort study

OBJECTIVE

To assess the impact of introducing standardised electronic booking and multidisciplinary team (MDT) meetings on provision of Induction of labour (IoL) at Nottingham University Hospitals NHS Trust.

DESIGN

A retrospective cohort study.

SETTING

Two tertiary maternity hospitals in the UK.

POPULATION

Women and birthing people who gave birth between 01/01/2023 and 31/07/2024.

METHODS

The study period was divided into three-time frames: before, during and after implementation of the MDT and electronic booking service. Data were extracted from the electronic booking system (CAREFLOW) and maternity BADGERNET records and analysed with descriptive statistics followed by multinomial regression analysis of trends.

MAIN OUTCOME MEASURES

Overall and early term IoL rates before, during, and after implementation of quality improvement measures.

RESULTS

Overall IoL rate was 38.9 % prior to implementing the electronic IOL service and MDT, increasing to 39.1 % during change implementation and reducing to 36.8 % post implementation. Early term (37 + 0 to 38 + 6 weeks) IoL saw a consistent fall, from 20.9 % to 19.2 % to 18.7 %. Unplanned caesarean section rates were higher for IoL than spontaneous labour at 32 % and 25 % respectively. Whilst IOL requests for post-dates were higher compared to other indications, the most common reason for performing IOL was for women presenting with reduced fetal movements (RFM).

CONCLUSIONS

Successful implementation of the IoL MDT and electronic booking service has enabled standardised care provision and better utilisation of resources, for an optimal maternal and perinatal outcome.

Postpartum hemorrhage: risk factors for severe blood loss, surgical intervention and peripartum hysterectomy

PURPOSE

To evaluate risk factors in patients presenting with postpartum hemorrhage (PPH) associated with severe blood loss (BL), surgical intervention or peripartum hysterectomy.

METHODS

This retrospective cohort study included all patients who gave birth at the Hannover Medical School between January 2013 and August 2022 with PPH, defined as BL ≥ 500 ml after vaginal delivery and ≥ 1000 ml after cesarean section. The threshold for severe PPH was set at BL ≥ 1500 ml. Operative management included manual placental removal and/or aspiration/curettage, need for intrauterine balloon tamponade, uterine packing with a chitosan covered gauze or compression sutures. Hysterectomy as ultima ratio was observed separately.

RESULTS

In total 20.9% of 1038 patients with PPH developed severe BL. Several risk factors were identified such as nicotine abuse (aOR 3.45, 95% CI 1.57-7.59, p = 0.002), multiparity (aOR 2.12, 95% CI 1.10-4.10, p = 0.03), uterine malformation (aOR 5.09, 95% CI 1.22-21.16, p = 0.03), c-section (aOR 3.92, 95% CI 2.59-5.92, p < 0.001), placenta praevia (aOR 2.82, 95% CI 1.2-6.63, p = 0.02), abnormal placentation (aOR 9.76, 95% CI 4.22-22.56, p < 0.001) and inversion of the uterus (aOR 16.89, 95% CI 1.62-176.12, p = 0.02). More than one third of the women had a surgical intervention. Independent risk factors for an operative management of PPH were uterus malformation (aOR 5.04, 95% CI 1.22-20.91, p = 0.03), placenta praevia (aOR 2.84, 95% CI 1.23-6.53, p = 0.01), abnormal placentation (aOR 9.78, 95% CI 4.30-22.27, p < 0.001) and c-section (aOR 4.65, 95% CI 3.14-6.89, p < 0.001). Peripartum hysterectomy occurred in 1.9% of the cases and was in addition independently associated wih preeclampsia (aOR 7.50, 95% CI 1.29-43.81, p = 0.03) and amniotic infection syndrome (aOR 12.22, 95% CI 1.92-77.90, p = 0.01).

CONCLUSION

PPH is a common complication in modern obstetrics and one in five patients with pathological bleeding after birth develops severe BL. There are specific risk factors associated with a BL ≥ 1500 ml, surgical intervention and peripartum hysterectomy in PPH that should be assessed by health professionals and taken into account in the management of this postpartum complication.

Magnitude and Determinants of Postpartum Hemorrhage in Sub-Saharan Africa: A Systematic Review and Meta-Analysis

Background: Maternal mortality remains a major challenge in sub-Saharan Africa (SSA), accounting for 70% of world's maternal deaths. Hemorrhage is the leading direct cause of maternal mortality worldwide, with postpartum hemorrhage (PPH) responsible for more than two-thirds of hemorrhage-related deaths. This systematic review and meta-analysis integrated data from studies conducted in SSA to provide an accurate estimation of the prevalence of PPH and to identify regional risk variables. Methods: We conducted a search across multiple databases for peer-reviewed articles published between 2013 and 2023. This study included quantitative research employing cross-sectional, case-control, or cohort designs, regardless of sample size, and published in English. This review excluded literature reviews, meta-syntheses, qualitative studies, editorials, systematic reviews, and meta-analyses. We used MetaXL to estimate the pooled magnitude of PPH in SSA, and employed the Q test, I2 statistic, and funnel plots to assess statistical heterogeneity. Furthermore, we used MetaXL to perform subgroup and sensitivity analyses. Finally, we used IBM SPSS Statistics for Windows (Version 29.0.2.0 Armonk, NY, USA), to estimate the pooled effect size of the factors associated with PPH. Results: 26 methodologically rigorous articles were included in this review and meta-analysis. The pooled magnitude of PPH in SSA was 8.6%. The studies exhibited significant heterogeneity. Individual factors associated with PPH include the woman's age (crude odds ratio [OR] = 4.37, 95% confidence interval [95% CI] = 3.03–6.29), place of residence (OR = 2.06, 95% CI = 1.51–2.82), and parity (OR = 3.13, 95% CI = 1.38–7.11). Antenatal factors include antenatal care (ANC) attendance (OR = 3.43, 95% CI = 1.12–10.05), antepartum hemorrhage (APH) (OR = 6.83, 95% CI = 3.64–12.80), and twin pregnancy (OR = 8.25, 95% CI = 3.80–17.92). Intrapartum factors include induction of labor (OR = 4.39, 95% CI = 2.01–9.61), and mode of delivery (OR = 2.61, 95% CI = 1.80–3.78). Postpartum factors include previous history of PPH (OR = 10.86, 95% CI = 3.71–31.84), and oxytocin use after delivery (OR = 0.17, 95% CI = 0.09–0.32). Conclusions: The pooled magnitude of PPH in SSA in this study was considerably higher than that in other regions. Therefore, there is a need to strengthen strategies aimed at improving ANC attendance in SSA to ultimately reduce PPH. Additionally, close monitoring of women with risk factors for PPH and the careful use of oxytocin for labor induction are strategies that can also be used to reduce PPH in SSA.

Magnitude and Determinants of Postpartum Hemorrhage in Sub-Saharan Africa: A Systematic Review and Meta-Analysis

Background: Maternal mortality remains a major challenge in sub-Saharan Africa (SSA), accounting for 70% of world's maternal deaths. Hemorrhage is the leading direct cause of maternal mortality worldwide, with postpartum hemorrhage (PPH) responsible for more than two-thirds of hemorrhage-related deaths. This systematic review and meta-analysis integrated data from studies conducted in SSA to provide an accurate estimation of the prevalence of PPH and to identify regional risk variables. Methods: We conducted a search across multiple databases for peer-reviewed articles published between 2013 and 2023. This study included quantitative research employing cross-sectional, case-control, or cohort designs, regardless of sample size, and published in English. This review excluded literature reviews, meta-syntheses, qualitative studies, editorials, systematic reviews, and meta-analyses. We used MetaXL to estimate the pooled magnitude of PPH in SSA, and employed the Q test, I2 statistic, and funnel plots to assess statistical heterogeneity. Furthermore, we used MetaXL to perform subgroup and sensitivity analyses. Finally, we used IBM SPSS Statistics for Windows (Version 29.0.2.0 Armonk, NY, USA), to estimate the pooled effect size of the factors associated with PPH. Results: 26 methodologically rigorous articles were included in this review and meta-analysis. The pooled magnitude of PPH in SSA was 8.6%. The studies exhibited significant heterogeneity. Individual factors associated with PPH include the woman's age (crude odds ratio [OR] = 4.37, 95% confidence interval [95% CI] = 3.03–6.29), place of residence (OR = 2.06, 95% CI = 1.51–2.82), and parity (OR = 3.13, 95% CI = 1.38–7.11). Antenatal factors include antenatal care (ANC) attendance (OR = 3.43, 95% CI = 1.12–10.05), antepartum hemorrhage (APH) (OR = 6.83, 95% CI = 3.64–12.80), and twin pregnancy (OR = 8.25, 95% CI = 3.80–17.92). Intrapartum factors include induction of labor (OR = 4.39, 95% CI = 2.01–9.61), and mode of delivery (OR = 2.61, 95% CI = 1.80–3.78). Postpartum factors include previous history of PPH (OR = 10.86, 95% CI = 3.71–31.84), and oxytocin use after delivery (OR = 0.17, 95% CI = 0.09–0.32). Conclusions: The pooled magnitude of PPH in SSA in this study was considerably higher than that in other regions. Therefore, there is a need to strengthen strategies aimed at improving ANC attendance in SSA to ultimately reduce PPH. Additionally, close monitoring of women with risk factors for PPH and the careful use of oxytocin for labor induction are strategies that can also be used to reduce PPH in SSA.

Is Grand Multiparity an Independent Risk Factor for Blood Transfusion?

The relation between grand multiparity and poor pregnancy outcome, especially postpartum hemorrhage and blood transfusion, has displayed inconsistent findings. Some studies have identified an increased maternal and neonatal morbidity, but the more recent literature is less clear about the risks. The objective of the study is to determine the association of grand multiparity with postpartum blood transfusion. We conducted a retrospective cohort study in a single tertiary university-affiliated medical center between 2011 and 2019. All women were categorized into one of three groups based on the number of previous deliveries: (a) nulliparous (no previous delivery), (b) multiparous (1-4 previous deliveries), and (c) grand multiparous (≥ 5 previous deliveries). We compared the demographic, clinical, and pregnancy outcomes of the study groups. The primary outcome was the need for red blood cell transfusion during the index admission. During the study period, there were 87,343 deliveries in our center. Among the study population, 36,777 (42.1%) were nulliparous, 49,072 (56.1%) were multipara, and 1494 (1.7%) were grand multiparous. Overall, 1602 women (1.8%) were treated with RBC transfusion. Cesarean delivery, macrosomia, preterm delivery, multiple gestations, antenatal anemia, thrombocytopenia, intrauterine fetal death (IUFD), and prolonged second or third stage of labor were more prevalent among women who were treated with RBC transfusion. After controlling for potential confounders, including maternal age, preterm delivery, IUFD, mode of delivery, and antenatal thrombocytopenia, grand multiparity was found to be an independent protective factor for RBC transfusion (RR = 0.2 (0.007-0.56). After controlling for cofounders, grand multiparity alone is not associated with postpartum blood transfusion.

Low-dose aspirin in the prevention of pre-eclampsia in China: postpartum hemorrhage in subgroups of women according to their characteristics and potential bleeding risk

BACKGROUND

The APPEC study is a large-population randomized controlled trial in China evaluating the role of low-dose aspirin prophylactic treatment for pre-eclampsia. There was no statistically significant difference in postpartum hemorrhage (PPH) incidence between the aspirin and control groups. This study aimed to evaluate the potential bleeding risk of 100 mg aspirin in high-risk pregnant women and the difference in the incidence of PPH according to maternal characteristics.

METHODS

This is a secondary data analysis of the APPEC study. Platelet counts and coagulation test results were collected at five follow-up visits. Subgroups defined by maternal age (<35 years and ≥35 years), pre-pregnancy body mass index (pre-BMI, <28 kg/m 2 and ≥28 kg/m 2 ), parity, gestational age at enrollment, and medical history, including pre-eclampsia, chronic hypertension, and diabetes mellitus, were analyzed. Logistic regression analysis was used to determine the statistical significance of the difference in the incidence of PPH after aspirin administration in pregnant women in each subgroup. Adjustment using multiple logistic regression models followed these analyses. Binary logistic regression was used to determine the relationship between pre-BMI and PPH.

RESULTS

There was no significant difference between the aspirin and control groups in bleeding risk (3.4% [16/464] vs. 3.0% [13/434], T = 0.147, P  = 0.701). No significant difference was found in the incidence of PPH in total (relative risk  = 1.220, 95% confidence interval [CI] = 0.720-2.067, P  = 0.459; aspirin group vs. control group, 6.5% [30/464] vs. 5.3% [23/434], P  = 0.459) or in subgroup analysis. A significant correlation between pre-BMI and PPH was found in the aspirin group, while in the control group there was no significant correlation (aspirin group, odds ratio [OR] = 1.086, 95% CI = 1.004-1.175, P  = 0.040; control group, OR = 1.060, 95% CI = 0.968-1.161, P  = 0.209).

CONCLUSIONS

A dosage of 100 mg of aspirin per day, initiated from 12 to 20 gestational weeks until 34 weeks of gestation, did not increase the risk of potential bleeding and PPH regardless of the maternal characteristic. In the aspirin group, the positive correlation between BMI and PPH was significant.

TRIAL REGISTRATION

ClinicalTrials.gov, NCT01979627.

Overweight, obesity and excessive weight gain in pregnancy as risk factors for adverse pregnancy outcomes: a narrative review

The global prevalence of overweight and obesity in pregnancy is rising and this represents a significant challenge for the management of pregnancy and delivery. Women who have a pre‐pregnancy body mass index greater than 25 kg m^–2 are more likely than those with a body mass index in the ideal range (20–24.99 kg m^–2) to have problems conceiving a child and are at greater risk of miscarriage and stillbirth. All pregnancy complications are more likely with overweight, obesity and excessive gestational weight gain, including those that pose a significant threat to the lives of mothers and babies. Labour complications arise more often when pregnancies are complicated by overweight and obesity. Pregnancy is a stage of life when women have greater openness to messages about their lifestyle and health. It is also a time when they come into greater contact with health professionals. Currently management of pregnancy weight gain and the impact of overweight tends to be poor, although a number of research studies have demonstrated that appropriate interventions based around dietary change can be effective in controlling weight gain and reducing the risk of pregnancy complications. The development of individualised and flexible plans for avoiding adverse outcomes of obesity in pregnancy will require investment in training of health professionals and better integration into normal antenatal care.

Overweight and obesity before pregnancy and excessive gestational weight gain are major determinants of risk for pregnancy loss, gestational diabetes, hypertensive conditions, labour complications and maternal death.

Pregnancy is regarded as a teachable moment when women are at their most receptive to messages about their health. However, unclear guidance on diet and physical activity, weight stigma from health professionals, inexperience and reluctance among professionals about raising issues about weight, and stretched resources put the health of women and babies at risk.

Excessive weight gain in pregnancy and post‐partum weight retention compromise future fertility and increase risk for future pregnancies.

Large randomised controlled trials have had little success in addressing excessive gestational weight gain or antenatal complications. Individualised, culturally sensitive and responsive interventions appear to have greater success.

Mild gestational thrombocytopenia in primiparous women, does it affect risk of early postpartum hemorrhage? A retrospective cohort study

PURPOSE

To assess whether women with mild gestational thrombocytopenia have a higher risk of postpartum hemorrhage.

METHODS

A retrospective computerized database. Primiparous women that delivered at our center (2005-2019) were included; we excluded women with possible etiologies for thrombocytopenia such as systemic lupus or coagulation disorders, and hypertensive disorder of pregnancy. Demographics, obstetric characteristics, and maternal as well as neonatal data were compared between groups. The exposure measure of the study was mild thrombocytopenia (100,000-150,000) versus normal thrombocyte count (>150,000) at admission for labor. Postpartum hemorrhage (PPH) is defined as a clinical estimated blood loss of > 500 mL and/or a hemoglobin drop of ≥ 3 g/dl.

RESULTS

Overall, 39,886 primiparous met the study's criteria, 5,209 (13.1%) had mild gestational thrombocytopenia (mean platelet count of 132.4 ± 13.2, study group) while 34,677 (86.9%) had normal platelet count at admission (mean of 221.6 ± 50.6, comparison group.) PPH occurred in 17.6% of the study group as opposed to 14% in the comparison group (p < .001). Similarly, all measures of increased bleeding were more common in the study group as compared to the comparison group, including rates of hemoglobin drop greater than 4 and 5 gram/dl, parenteral iron infusion, and blood products transfusion. On multivariable analysis, the aOR for PPH among women in the study group was 1.23 [1.11-1.36].

CONCLUSION

Primiparous women with mild gestational thrombocytopenia are at increased risk of peripartum hemorrhage, this should be considered a risk factor when assessing parturients' risk of PPH.