National Partnership for Maternal Safety Consensus Bundle on Obstetric Hemorrhage

Postpartum Haemorrhage and Long-Term Mortality

BACKGROUND

Postpartum haemorrhage (PPH) is associated with significant short-term morbidity and mortality. Whether PPH confers long-term all-cause mortality risk is unknown.

OBJECTIVE

To examine the risk of long-term mortality associated with PPH.

METHODS

The Collaborative Perinatal Project (CPP) Mortality Linkage Study is a prospective cohort study of pregnant persons (1959-1966) linked with vital status from the National Death Index and Social Security Death Master File for vital status through 2016. Postpartum haemorrhage was defined based on documentation of haemorrhage within or after 24 hours of delivery in obstetric records. We used Cox regression to examine associations of PPH with long-term all-cause mortality. All models adjusted for delivery characteristics, comorbid medical diagnoses, and sociodemographic characteristics. We further explored heterogeneity in all-cause mortality by sociodemographic characteristics.

RESULTS

Of the 43,583 participants with a singleton pregnancy, 1532 (3.5%) experienced PPH, and 17,165 (39.4%) had died by 2016. The median follow-up time was 52 years (interquartile range 45-54). PPH was associated with increased all-cause mortality risk in unadjusted models (hazard ratio [HR] 1.12, 95% confidence interval [CI] 1.04, 1.21) but not in fully adjusted models (HR 1.02, 95% CI 0.94, 1.11). While HRs varied across sociodemographic subgroups, results were imprecise. We found no evidence of increased cause-specific mortality risk associated with PPH.

CONCLUSIONS

Although PPH is associated with short-term morbidity and mortality, our results are generally reassuring against the increased risk of long-term mortality associated with PPH.

Strategies for optimising early detection and obstetric first response management of postpartum haemorrhage at caesarean birth: a modified Delphi-based international expert consensus

OBJECTIVE

There are no globally agreed on strategies on early detection and first response management of postpartum haemorrhage (PPH) during and after caesarean birth. Our study aimed to develop an international expert's consensus on evidence-based approaches for early detection and obstetric first response management of PPH intraoperatively and postoperatively in caesarean birth.

DESIGN

Systematic review and three-stage modified Delphi expert consensus.

SETTING

International.

POPULATION

Panel of 22 global experts in PPH with diverse backgrounds, and gender, professional and geographic balance.

OUTCOME MEASURES

Agreement or disagreement on strategies for early detection and first response management of PPH at caesarean birth.

RESULTS

Experts agreed that the same PPH definition should apply to both vaginal and caesarean birth. For the intraoperative phase, the experts agreed that early detection should be accomplished via quantitative blood loss measurement, complemented by monitoring the woman's haemodynamic status; and that first response should be triggered once the woman loses at least 500 mL of blood with continued bleeding or when she exhibits clinical signs of haemodynamic instability, whichever occurs first. For the first response, experts agreed on immediate administration of uterotonics and tranexamic acid, examination to determine aetiology and rapid initiation of cause-specific responses. In the postoperative phase, the experts agreed that caesarean birth-related PPH should be detected primarily via frequently monitoring the woman's haemodynamic status and clinical signs and symptoms of internal bleeding, supplemented by cumulative blood loss assessment performed quantitatively or by visual estimation. Postoperative first response was determined to require an individualised approach.

CONCLUSION

These agreed on proposed approaches could help improve the detection of PPH in the intraoperative and postoperative phases of caesarean birth and the first response management of intraoperative PPH. Determining how best to implement these strategies is a critical next step.

Prophylactic Tranexamic Acid Prevents Postpartum Hemorrhage and Transfusions in Cesarean Deliveries: A Systematic Review and Meta-analysis

Postpartum hemorrhage (PPH) is the leading cause of maternal mortality worldwide and PPH resulting in transfusion is the most common maternal morbidity in the United States. Literature demonstrates that tranexamic acid (TXA) can reduce blood loss in cesarean deliveries; however, there is little consensus on the impact on major morbidities like PPH and transfusions. We conducted a systematic review/meta-analysis of randomized controlled trials (RCTs) to evaluate if administration of prophylactic intravenous (IV) TXA prevents PPH and/or transfusions following low-risk cesarean delivery. PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-analyses) guidelines were followed. Five databases were searched: Cochrane, EBSCO, Ovid, PubMed, and ClinicalKey. RCTs published in English between January 2000 and December 2021 were included. Studies compared PPH and transfusions in cesarean deliveries between prophylactic IV TXA and control (placebo or no placebo). The primary outcome was PPH, and the secondary outcome was transfusions. Random effects models were used to calculate effect size (ES) of exposure in Mantel-Haenszel risk ratios (RR). All analysis was done at a confidence level (CI) of α = 0.5. Modeling showed that TXA led to significantly less risk of PPH than control (RR: 0.43; 95% CI: 0.28-0.67). The effect on transfusion was comparable (RR: 0.39; 95% CI: 0.21-0.73). Heterogeneity was minimal (I 2 = 0%). Due to the large sample sizes needed, many RCTs are not powered to interpret TXA's effect on PPH and transfusions. Pooling these studies in a meta-analysis allows for more power and analysis but is limited by the heterogeneity of studies. Our results minimize heterogeneity while demonstrating that prophylactic TXA can lower PPH occurrence and reduce the need for blood transfusion. We suggest considering prophylactic IV TXA as the standard of care in low-risk cesarean deliveries. KEY POINTS: · Consider TXA prior to incision for singleton, term pregnancies undergoing elective cesarean.. · Prophylactic TXA is effective in preventing PPH and blood transfusions.. · Routine use of TXA has the potential to decrease transfusion-related complications and costs..

External Validation of Postpartum Hemorrhage Prediction Models Using Electronic Health Record Data

OBJECTIVE

A recent study leveraging machine learning methods found that postpartum hemorrhage (PPH) can be predicted accurately at the time of labor admission in the U.S. Consortium for Safe Labor (CSL) dataset, with a C-statistic as high as 0.93. These CSL models were developed in older data (2002-2008) and used an estimated blood loss (EBL) of ≥1,000 mL to define PPH. We sought to externally validate these models using a more recent cohort of births where blood loss was measured using quantitative blood loss (QBL) methods.

STUDY DESIGN

Using data from 5,261 deliveries between February 1, 2019 and May 11, 2020 at a single tertiary hospital, we mapped our electronic health record (EHR) data to the 55 predictors described in previously published CSL models. PPH was defined as QBL ≥1,000 mL within 24 hours after delivery. Model discrimination and calibration of the four CSL models were measured using our cohort. In a secondary analysis, we fit new models in our study cohort using the same predictors and algorithms as the original CSL models.

RESULTS

The original study cohort had a substantially lower rate of PPH, 4.8% (7,279/228,438) versus 25% (1,321/5,261), possibly due to differences in measurement. The CSL models had lower discrimination in our study cohort, with a C-statistic as high as 0.57 (logistic regression). Models refit in our study cohort achieved better discrimination, with a C-statistic as high as 0.64 (random forest). Calibration improved in the refit models as compared with the original models.

CONCLUSION

The CSL models' accuracy was lower in a contemporary EHR where PPH is assessed using QBL. As institutions continue to adopt QBL methods, further data are needed to understand the differences between EBL and QBL to enable accurate prediction of PPH.

KEY POINTS

· Machine learning methods may help predict PPH.. · EBL models do not generalize when QBL is used.. · Blood loss estimation alters model accuracy..

Association of intrapartum severe maternal morbidity with receipt of postpartum contraception among Medicaid recipients

OBJECTIVES

We sought to determine the association between intrapartum severe maternal morbidity and receipt of postpartum contraception within 60 days among Medicaid recipients in Oregon and South Carolina.

STUDY DESIGN

We conducted a historical cohort study of all Medicaid births in Oregon and South Carolina from 2011 to April 2018. Intrapartum severe maternal morbidity was measured using diagnosis and procedure codes according to the Center for Disease Control's classifications. Our primary outcome of interest was receipt of postpartum contraception within 60 days of birth. We captured permanent and reversible forms of contraception. We examined the association of intrapartum severe maternal morbidity with receipt of postpartum contraception, and whether this varied by type of Medicaid (Traditional vs Emergency). We used Poisson regression models with robust (sandwich) estimation of variance to calculate relative risk (RR) for each model.

RESULTS

Our analytic cohort included 347,032 births. We identified 3079 births with evidence of intrapartum severe maternal morbidity (0.9% of all births). When adjusted for maternal age, rural vs urban status, and state of residence, Medicaid beneficiaries with births complicated by intrapartum severe maternal morbidity are 7% less likely to receive any contraception (RR 0.93, 95% CI (0.91, 0.95)) by 60 days postpartum. Among births complicated by severe maternal morbidity we found that Emergency Medicaid recipients were 92% less likely than Traditional Medicaid recipients to receive any method of contraception (RR 0.08, 95% CI (0.08, 0.08)).

CONCLUSIONS

Medicaid recipients experiencing intrapartum severe maternal morbidity are less likely to receive contraception within 60 days than Medicaid beneficiaries with uncomplicated births.

IMPLICATIONS

Medicaid recipients with intrapartum severe maternal morbidity are less likely to receive postpartum contraception, than Medicaid beneficiaries without severe maternal morbidity.

Oxytocin receptor DNA methylation is associated with exogenous oxytocin needs during parturition and postpartum hemorrhage

BACKGROUND

The oxytocin receptor gene (OXTR) is regulated, in part, by DNA methylation. This mechanism has implications for uterine contractility during labor and for prevention or treatment of postpartum hemorrhage, an important contributor to global maternal morbidity and mortality.

METHODS

We measured and compared the level of OXTR DNA methylation between matched blood and uterine myometrium to evaluate blood as an indicator of uterine methylation status using targeted pyrosequencing and sites from the Illumina EPIC Array. Next, we tested for OXTR DNA methylation differences in blood between individuals who experienced a postpartum hemorrhage arising from uterine atony and matched controls following vaginal birth. Bivariate statistical tests, generalized linear modeling and Poisson regression were used in the analyses.

RESULTS

Here we show a significant positive correlation between blood and uterine DNA methylation levels at several OXTR loci. Females with higher OXTR DNA methylation in blood had required significantly more exogenous oxytocin during parturition. With higher DNA methylation, those who had oxytocin administered during labor had significantly greater relative risk for postpartum hemorrhage (IRR 2.95, 95% CI 1.53-5.71).

CONCLUSIONS

We provide evidence that epigenetic variability in OXTR is associated with the amount of oxytocin administered during parturition and moderates subsequent postpartum hemorrhage. Methylation can be measured using a peripheral tissue, suggesting potential use in identifying individuals susceptible to postpartum hemorrhage. Future studies are needed to quantify myometrial gene expression in connection with OXTR methylation.

Integrated review of the knowledge, attitudes, and practices of maternity health care professionals concerning umbilical cord clamping

BACKGROUND

Umbilical cord clamp timing has implications for newborn health, which include increased iron stores up to 6 months of age. National and International cord clamping guidelines differ as do health professionals' practices. The rationale for differences in cord clamping practice is unclear.

AIMS AND OBJECTIVE

Studies on the knowledge, attitudes, and practices of maternity health care professionals about cord clamp timing were synthesized. Similarities and differences between professional groups and understanding of the optimal timing of cord clamp timing for term newborns were compared.

METHODS

An integrative review was undertaken. PubMed, Scopus, MIDIRS, CINAHL, and Google Scholar were searched. Publication date limits were set between January 2007 and December 2020. Quality appraisal was undertaken using the Critical Appraisal Skills Program (CASP) tools.

RESULTS

Eighteen studies met inclusion criteria, as they included primary research studies that investigated maternity health care professionals' knowledge, attitudes, and practices about umbilical cord clamping, and were written in English. Four main subject areas were identified: a) knowledge of optimal cord clamp timing; b) attitudes and perceptions of early vs deferred cord clamping; c) cord clamping practice; and d) rationale for cord clamping practice.

CONCLUSIONS

Different attitudes and practices were identified between midwifery and medical professionals in relation to cord clamp timing together with health professional knowledge and practice gaps pertaining to optimal cord clamp timing. Contemporary evidence should inform guidelines for clinical practice and be embedded into maternity health professional curricula and professional development programs.

Oxytocin receptor single nucleotide polymorphism predicts atony-related postpartum hemorrhage

BACKGROUND

Postpartum hemorrhage remains a key contributor to overall maternal morbidity in the United States. Current clinical assessment methods used to predict postpartum hemorrhage are unable to prospectively identify about 40% of hemorrhage cases. Oxytocin is a first-line pharmaceutical for preventing and treating postpartum hemorrhage, which acts through oxytocin receptors on uterine myocytes. Existing research indicates that oxytocin function is subject to variation, influenced in part by differences in the DNA sequence within the oxytocin receptor gene. One variant, rs53576, has been shown to be associated with variable responses to exogenous oxytocin when administered during psychological research studies. How this variant may influence myometrial oxytocin response in the setting of third stage labor has not been studied. We tested for differences in the frequency of the oxytocin receptor genotype at rs53576 in relationship to the severity of blood loss among a sample of individuals who experienced vaginal birth.

METHODS

A case-control prospective design was used to enroll 119 postpartum participants who underwent vaginal birth who were at least 37 weeks of gestation. Cases were defined by either a 1000 mL or greater blood loss or instances of heavier bleeding where parturients were given additional uterotonic treatment due to uterine atony. Controls were matched to cases on primiparity and labor induction status. Genotype was measured from a maternal blood sample obtained during the 2^nd postpartum month from 95 participants. Statistical analysis included bivariate tests and generalized linear and Poisson regression modeling.

RESULTS

The distribution of the genotype across the sample of 95 participants was 40% GG (n = 38), 50.5% AG (n = 48) and 9.5% AA (n = 9). Blood loss of 1000 mL or greater occurred at a rate of 7.9% for GG, 12.5% for AG and 55.6% for AA participants (p = 0.005). Multivariable models demonstrated A-carriers (versus GG) had 275.2 mL higher blood loss (95% CI 96.9-453.4, p < 0.01) controlling for parity, intrapartum oxytocin, self-reported ancestry, active management of third stage or genital tract lacerations. Furthermore, A-carrier individuals had a 79% higher risk for needing at least one second-line treatment (RR = 1.79, 95% CI = 1.08-2.95) controlling for covariates. Interaction models revealed that A-carriers who required no oxytocin for labor stimulation experienced 371.4 mL greater blood loss (95% CI 196.6-546.2 mL).

CONCLUSIONS

We provide evidence of a risk allele in the oxytocin receptor gene that may be involved in the development of postpartum hemorrhage among participants undergoing vaginal birth, particularly among those with fewer risk factors. The findings, if reproducible, could be useful in studying pharmacogenomic strategies for predicting, preventing or treating postpartum hemorrhage.

Incidence, mortality, and factors associated with primary postpartum haemorrhage following in-hospital births in northwest Ethiopia

BACKGROUND

Of the 1010 reported maternal deaths in 2018, just over 65% occurred in hospitals in Ethiopia. However, there is a lack of standardised data about the contributing factors. This study aimed to investigate the incidence, mortality, and factors associated with primary postpartum haemorrhage following in-hospital births in northwest Ethiopia.

METHODS

A retrospective cohort design was used; an audit of 1060 maternity care logbooks of adult women post-partum at Felege Hiwot Referral Hospital and University of Gondar Comprehensive Specialized Hospital. The data were abstracted between December 2018 and May 2019 using a systematic random sampling technique. We used the Facility Based Maternal Death Abstraction Form containing sociodemographic characteristics, women's medical history, and partographs. Primary postpartum haemorrhage was defined as the estimated blood loss recorded by the staff greater or equal to 500 ml for vaginal births and 1000 ml for caesarean section births, or the medical doctor diagnosis and recording of the woman as having primary postpartum haemorrhage. The data analysis was undertaken using Stata version 15. Variables with P ≤ 0.10 for significance were selected to run multivariable logistic analyses. Variables that had associations with primary postpartum haemorrhage were identified based on the odds ratio, with 95% confidence interval (CI) and P-value less than 0.05.

RESULTS

The incidence of primary postpartum haemorrhage in the hospitals was 8.8% (95% CI: 7.2, 10.6). Of these, there were 7.4% (95% CI: 2.1, 13.3) maternal deaths. Eight predictor variables were found to be independently associated with primary postpartum haemorrhage, including age ≥35 years (AOR: 2.20; 95% CI: 1.08, 4.46; P = 0.03), longer than 24 hours duration of labour (AOR: 7.18; 95% CI: 2.73, 18.90; P = 0.01), vaginal or cervical lacerations (AOR: 4.95; 95% CI: 2.49, 9.86; P = 0.01), instrumental (forceps or vacuum)-assisted birth (AOR: 2.92; 95% CI: 1.25, 6.81; P = 0.01), retained placenta (AOR: 21.83; 95% CI: 6.33, 75.20; P = 0.01), antepartum haemorrhage in recent pregnancy (AOR: 6.90; 95% CI: 3.43, 13. 84; p = 0.01), women in labour referred from primary health centres (AOR: 2.48; 95% CI: 1.39, 4.42; P = 0.02), and births managed by medical interns (AOR: 2.90; 95% CI: 1.55, 5.37; P = 0.01).

CONCLUSION

We found that while the incidence of primary postpartum haemorrhage appeared to be lower than in other studies in Africa the associated maternal mortality was higher. Although most factors associated with primary postpartum haemorrhage were consistent with those identified in the literature, two additional specific factors, were found to be prevalent among women in Ethiopia; the factors were referred women in labour from primary health facilities and births managed by medical interns. Maternal healthcare providers in these hospitals require training on the management of a birthing emergency.

The Role of Early Initiation of Breastfeeding in the Duration of the Third Stage of Delivery and the Amount of Blood Loss in the Fourth Stage in Spontaneous Vaginal Delivery

Aims: To determine the effect of Early Initiation of Breastfeeding (EIBF) in the third stage of labor and the amount of blood loss in the forth stage of delivery. Methods: An experimental study comparing the duration of 3rd stage and the amount of blood loss in 4th stage in Early Initiation of Breastfeeding (EIBF), oxytocin administration, and Early Initiation of Breastfeeding (IBF) given oxytocin at spontaneous vaginal delivery in delivery room of H. Adam Malik General Hospital, Dr. Pirngadi Hospital, Sundari Hospital and Universitas Sumatera Utara Hospital starting from March 2019 until the minimum sample was met. Results: The data analysis results of the comparison of duration demonstrated p-value of 0.001The comparison among groups with post hoc analysis showed a meaningful comparison in this analysis with p value of 0.001, while duration of the3rd stage in group B compared to group C statistically did not show any significant difference with  p value of 1.00. The mean of amount of blood loss among groups A, B, and C respectively were 139 ± 11.8, 141.8 ± 12.4 and 132.1 ± 14.4 with p value 0.048. Conclusions: It is concluded that the amount of blood loss in the fourth stage among the groups was not significantly different in each group. Comparisons of the amount of bleeding in group A vs. B, A vs. C and B vs. C are indicated by the p value of each group i.e. 1.0; 0184 and 0.059.

Resource use decrease after implementation of care bundles for treatment of postpartum hemorrhage

OBJECTIVE

To evaluate whether the implementation of care bundles has an impact on resource utilization in the care of patients with postpartum hemorrhage (PPH).

METHODS

Retrospective, cross-sectional, observational study of 404 patients with stage II or greater PPH. Periods 2011-2014 and 2015-2017, before and after the introduction of care bundles, were compared. Billing reports were analyzed, and all services provided to treat these events were extracted. Use of resources within the two periods was computed.

RESULTS

The amount billed per episode decreased 18.66% from the first to the second period. Most PPH cases used fewer resources after introduction of care bundles. The greatest reduction was in the use of medications, with a decrease of charges by 56.3%. Diagnostic procedure charges decreased by 47.6% and consultation charges decreased by (37.7%).

CONCLUSIONS

The use of PPH care bundles may be associated with lower resource use and fewer interventions.

Advances in anesthetic and obstetric management of patients with placenta accreta spectrum

PURPOSE OF REVIEW

The incidence of placenta accreta spectrum is increasing and it is a leading cause of peripartum hysterectomy and massive postpartum hemorrhage. The purpose of the present article is to provide a contemporary overview of placenta accreta spectrum pertinent to the obstetric anesthesiologist.

RECENT FINDINGS

Recent changes in the terminology used to report invasive placentation were proposed to clarify diagnostic criteria and guidelines for use in clinical practice. Reduced morbidity is associated with scheduled preterm delivery in a center of excellence using a multidisciplinary team approach. Neuraxial anesthesia as a primary technique is increasingly being used despite the known risk of major bleeding. The use of viscoelastic testing and endovascular interventions may aid hemostatic resuscitation and improve outcomes.

SUMMARY

Accurate diagnosis and early antenatal planning among team members are essential. Obstetric anesthesiologists should be prepared to manage a massive hemorrhage, transfusion, and associated coagulopathy. Increasingly, viscoelastic tests are being used to assess coagulation status and the ability to interpret these results is required to guide the transfusion regimen. Balloon occlusion of the abdominal aorta has been proposed as an intervention that could improve outcomes in women with placenta accreta spectrum, but high-quality safety and efficacy data are lacking.

Factors affecting third-stage management and postpartum hemorrhage in planned midwife-led home and birth center births in the United States

BACKGROUND

Postpartum hemorrhage (PPH) is a potential childbirth complication. Little is known about how third-stage labor is managed by midwives in the United States, including use of uterotonic medication during community birth. Access to uterotonic medication may vary based on credentials of the midwife or state regulations governing midwifery.

METHODS

Using data from the Midwives of North America 2.0 database (2004-2009), we describe the PPH incidence for women giving birth in the community, their demographic and clinical characteristics, and methods used by midwives to address PPH. We also examined PPH rates by midwifery credentials and by the presence of regulations for legal midwifery practice.

RESULTS

Of the 17 836 vaginal births, 15.9% had blood loss of over 500 mL and 3.3% had 1000 mL or greater blood loss. Midwives used pharmaceuticals to prevent or treat postpartum bleeding in 6.3% and 13.9% of births, respectively, and the rate of hospital transfer after birth was 1.4% (n = 247). In adjusted analyses, PPH was less likely when births occurred at home vs a birth center, if the midwife had a CNM/CM credential vs a CPM/LM/LDM credential, or if the woman was multiparous without a history of PPH or prior cesarean birth. PPH was more likely in states with barriers to midwifery practice compared with regulated states (OR: 1.26; 95% CI, 1.16-1.38).

CONCLUSIONS

Women giving birth in the community experienced low overall incidence of PPH-related hospital transfer. However, the occurrence of PPH itself would likely be reduced with improved legal access to uterotonic medication.

Predicting Postpartum Hemorrhage After Vaginal Birth by Labor Phenotype

INTRODUCTION

Postpartum hemorrhage (PPH) is an important contributor to maternal morbidity and mortality. Predicting which laboring women are likely to have a PPH is an active area of research and a component of quality improvement bundles. The purpose of this study was to identify phenotypes of labor processes (ie, labors that have similar features, such as duration and type of interventions) in a cohort of women who had vaginal births, estimate the likelihood of PPH by phenotype, and analyze how maternal and fetal characteristics relate to PPH risk by phenotype.

METHODS

This study utilized the Consortium for Safe Labor dataset (2002-2008) and examined term, singleton, vaginal births. Using 16 variables describing the labor and birth processes, a latent class analysis was performed to describe distinct labor process phenotypes.

RESULTS

Of 24,729 births, 1167 (4.72%) women experienced PPH. Five phenotypes best fit the data, reflecting labor interventions, duration, and complications. Women who had shorter duration of admission after spontaneous labor onset (admitted in latent or active labor) had the lowest rate of PPH (3.8%-3.9%). The 2 phenotypes of labor progress characterized by women who had complicated prolonged labors (spontaneous or induced) had the highest rate of PPH (8.0% and 12.0%, respectively). However, the majority of PPH (n = 881, 75%) occurred in the phenotypes with fewer complications. Prepregnancy body mass index did not predict PPH. Overall, the odds of PPH were highest among nulliparous women (odds ratio [OR], 1.52; 95% CI, 1.30-1.77), as well as Black women (OR, 1.39; 95% CI, 1.13-1.73) and Hispanic women (OR, 1.85; 95% CI, 1.56-2.20). Within phenotypes, maternal race and ethnicity, nulliparity, macrosomia, hypertension, and depression were associated with increased odds of PPH.

DISCUSSION

Women who were classified into a lower-risk labor phenotype and still experienced PPH were more likely to be nulliparous, a person of color, or diagnosed with hypertension.

Initial management of primary postpartum hemorrhage: a survey

OBJECTIVE

The objective of this study is to evaluate the actions taken by obstetricians when faced with postpartum hemorrhage (PPH).

MATERIALS AND METHODS

A standardized open-ended survey was applied to 235 physicians at five hospitals and at an obstetrics and gynecology conference, inquiring about which actions are recommended in the initial stages of PPH. We calculated the frequency and confidence intervals of the actions mentioned and correlated the number of actions with the number of clinicians mentioning them using Spearman's rho test.

RESULTS

Asking for help was mentioned by 45% of the respondents and 38% asked for vital signs. Only one-fifth of those surveyed asked for blood count, coagulation testing, arterial blood gas, or urinary catheter. Very few mentioned hypothermia prevention, oxygen administration, or blood transfusion. A total of 80% of those interviewed only mentioned 3 of the 16 recommended actions.

CONCLUSION

Postpartum hemorrhage training should include instructions on initial steps in order to improve treatment comprehension and outcomes.

Physiologic childbirth and active management of the third stage of labor: A latent class model of risk for postpartum hemorrhage

BACKGROUND

Postpartum hemorrhage (PPH) is a threat to maternal mortality worldwide. Evidence supports active management of third stage labor (AMTSL) for preventing PPH. However, trials of AMTSL include women at varying risk levels, such as women undergoing physiologic labor and those with labor complications. Counseling women about their risk for PPH and AMTSL is difficult as many women who appear low-risk can still have PPH.

METHODS

This study uses outcomes of 2322 vaginal births from a hospital midwifery service in the United States to examine risks for PPH and effectiveness of AMTSL. Using a latent class analysis approach, physiologic birth practices and other risk factors for PPH were analyzed to understand if discrete classes of clinical characteristics would emerge. The effect of AMTSL on the PPH outcome was also considered by class.

RESULTS

A four-class solution best fit the data; each class was clinically distinct. The two largest Classes (A and B) represented women with term births and lower average parity, with higher rates of nulliparity in Class B. Class A women had more physiologic birth elements and less labor induction or labor dysfunction compared with Class B. PPH and AMTSL use was higher in Class B. In Class B, AMTSL lowered risk for PPH. However, in Class A, AMTSL was associated with higher risk for PPH and delayed placental delivery (>30 minutes).

DISCUSSION

AMTSL may not be as beneficial to women undergoing physiologic birth. Further study of the etiology of PPH in these women is indicated to inform preventive care.

A review of maternal mortality and quality of care in the USA

Objective: The purpose of this study was to review studies and reports examining maternal mortality and quality of maternal health care in the USA, which has the highest maternal mortality rate among its peers.Methods: Electronic search of current literature on maternal mortality and quality of care in the USA and Europe was conducted. Findings were summarized according to the Donabedian's structure-process-outcomes conceptual model.Results: Standards and protocols, effective communication and hospitalist care indicated positive maternal outcomes, including a reduction in maternal mortality. However, lack of coordination of care among providers for pregnant women with chronic disease, fragmentation, or substandard of care and late prenatal care initiation are among the domain of processes of care that were noted to negatively influence maternal health outcomes. Further, the absence of a national forum committee to gather and systematically use research findings and data to guide change constitutes a serious obstacle in improving quality of care in the obstetric field.Conclusions: Providing good quality of care and eliminating health disparities in obstetrics and gynecology are important elements in preventing maternal deaths. Future research regarding patient-centered care and health disparities in maternal health will provide guidance to policymakers in our efforts to reduce maternal mortality.

Variables That Influence US Midwife and Physician Management of the Third Stage of Labor

INTRODUCTION

Midwives and physicians incorporate their knowledge, experiences, and other variables in making clinical decisions. Variations in the management of the third stage of labor may be a result of variables that influence providers' decision making. The purpose of this study was to describe variables that influence US midwives' and physicians' management of the third stage of labor.

METHODS

A randomly selected national sample of certified nurse-midwives and certified midwives, certified professional midwives, obstetricians, and family physicians was surveyed about the extent to which maternal characteristics, maternal history, and current birth characteristics influence their third-stage management. The extent of influence was defined in terms of always to never altering management. Descriptive summaries, group comparisons, and partial correlations were used to determine differences in influences between midwives and physicians. One free-text question was analyzed using qualitative methods.

RESULTS

A total of 1243 clinicians responded. There was considerable variability in the response patterns in that the same variable was reported to always alter management during the third stage of labor for some participants yet did not influence the management practices of others at all. Differences between responses from midwives and physicians were explored as a possible explanation for some of the variability. In response to the free-text inquiry about variables that most influenced changes in participants' usual management of the third stage, the participants most often included active bleeding, current recommendations or guidelines, and maternal or family preferences.

DISCUSSION

This study identifies variables reported as influencing clinical decision making during the third stage of labor. Therefore, these variables are important to consider when evaluating interventions and outcomes related to management of the third stage of labor and any attempts to design new interventions. The findings are descriptive of practice; they are not intended to guide changes in practice.