Stillbirth in cases of severe acute maternal morbidity

Surviving mothers and lost babies - burden of stillbirths and neonatal deaths among women with maternal near miss in eastern Ethiopia: a prospective cohort study

Background

Although maternal near miss (MNM) is often considered a ‘great save’ because the woman survived life-threatening complications, these complications may have resulted in loss of a child or severe neonatal morbidity. The objective of this study was to assess proportion of perinatal mortality (stillbirths and early neonatal deaths) in a cohort of women with MNM in eastern Ethiopia. In addition, we compared perinatal outcomes among women who fulfilled the World Health Organization (WHO) and the sub-Saharan African (SSA) MNM criteria.

Methods

In a prospective cohort design, women with potentially life-threatening conditions (PLTC) (severe postpartum hemorrhage, severe pre-(eclampsia), sepsis/severe systemic infection, and ruptured uterus) were identified every day from January 1st, 2016, to April 30th, 2017, and followed until discharge in the two main hospitals in Harar, Ethiopia. Maternal and perinatal outcomes were collected using both sets of criteria. Numbers and proportions of stillbirths and early neonatal deaths were computed and compared.

Results

Of 1054 women admitted with PTLC during the study period, 594 women fulfilled any of the MNM criteria. After excluding near misses related to abortion, ectopic pregnancy or among undelivered women, 465 women were included, in whom 149 (32%) perinatal deaths occurred: 132 (88.6%) stillbirths and 17 (11.4%) early neonatal deaths. In absolute numbers, the SSA criteria picked up more perinatal deaths compared to the WHO criteria, but the proportion of perinatal deaths was lower in SSA group compared to the WHO (149/465, 32% vs 62/100, 62%). Perinatal mortality was more likely among near misses with antepartum hemorrhage (adjusted odds ratio (aOR) = 4.81; 95% CI = 1.76-13.20), grand multiparous women (aOR = 4.31; 95% confidence interval CI = 1.23-15.25), and women fulfilling any of the WHO near miss criteria (aOR = 4.89; 95% CI = 2.17-10.99).

Conclusion

WHO MNM criteria pick up fewer perinatal deaths, although perinatal mortality occurred in a larger proportion of women fulfilling the WHO MNM criteria compared to the SSA MNM criteria. As women with MNM have increased risk of perinatal deaths (in both definitions), a holistic care addressing the needs of the mother and baby should be considered in management of women with MNM.

Association Between Stillbirth at 23 Weeks of Gestation or Greater and Severe Maternal Morbidity

OBJECTIVE

To estimate whether stillbirth at 23 weeks of gestation or more is associated with increased risk of severe maternal morbidity compared with live birth, when stratified by maternal comorbidities.

METHODS

This retrospective cohort study used International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) diagnosis and procedure codes within the Healthcare Cost and Utilization Project's Florida State Inpatient Database. The first delivery of female Florida residents aged 13-54 years old from 2005 to 2014 was included. The exposure was an ICD-9-CM code of stillbirth at 23 weeks of gestation or more; the control was an ICD-9-CM code of singleton live birth. Deliveries were stratified by the presence of 1 or more conditions within a well-validated maternal morbidity composite using ICD-9-CM codes during delivery hospitalization. The primary outcome was an ICD-9-CM diagnosis or procedure code during delivery hospitalization of any indices within the Centers for Disease Control and Prevention's severe maternal morbidity composite. Multivariable analyses adjusted for maternal sociodemographic factors and delivery mode to compare outcomes after stillbirth with live-birth delivery.

RESULTS

Nine thousand five hundred twenty-three women who delivered stillborn fetuses and 1,353,044 with liveborn neonates were included. Among 6,590 stillbirths and 935,913 live births without maternal comorbidities, severe maternal morbidity was significantly more common during stillbirth delivery (n=345 [5.2%]), corresponding to a seven-fold increased risk compared with live birth (n=8,318 [0.9]; adjusted odds ratio [aOR] 7.05 [95% CI 6.27-7.93]). Among 2,933 stillbirths and 417,131 live births with maternal comorbidities, severe maternal morbidity was significantly more common during stillbirth delivery (n=390 [13.3%]): the risk was more than six-fold higher comparatively (n=11,122 [2.7%]; aOR 6.21 [95% CI 5.54-6.96]). Most maternal comorbidities were individually associated with higher risk of severe maternal morbidity during stillbirth compared with live-birth delivery.

CONCLUSION

Though severe maternal morbidity is overall uncommon, delivering a stillborn fetus 23 weeks of gestation or greater is associated with increased likelihood of severe maternal morbidity, particularly among women with comorbidities, suggesting health care providers must be vigilant about severe maternal morbidity during stillbirth delivery.

Disentangling the contributions of maternal and fetal factors to estimate stillbirth risks for intrapartum adverse events in Tanzania and Uganda

OBJECTIVE

To estimate the stillbirth risk associated with intrapartum adverse events, controlling for fetal and maternal factors.

METHODS

The present study was an analysis of cross-sectional patient-record and facility-file data from women with viable fetuses who experienced obstetric adverse events at 23 hospitals and 38 health centers in Tanzania (between December 2015 and October 2016), and 22 hospitals, 16 level-4 health centers, and five level-3 health centers in Uganda (between May 2016 and September 2017). Adverse events were categorized in three severity groups (postpartum, intrapartum non-near-miss, and intrapartum near-miss) to calculate stillbirth rates and adjusted prevalence ratios.

RESULTS

Data from 3816 women in Tanzania and 8305 in Uganda were included. Compared with postpartum adverse events, intrapartum near-miss was associated with a 3.73- and 4.55-fold higher prevalence of stillbirth in Uganda and Tanzania, respectively. Most women who experienced near-miss had organ dysfunction on arrival or developed it soon after. The risk of stillbirth was higher among preterm deliveries compared with term deliveries, and was 42% and 59% lower in Tanzania and Uganda, respectively, for cesarean deliveries compared with vaginal deliveries after intrapartum non-near-miss adverse events.

CONCLUSION

Stillbirth risk increased with severity of complications and was higher among premature deliveries. Survival was higher for cesarean deliveries in intrapartum non-near-miss complications, identifying the opportunity to prevent deterioration by timely actions.

Severe maternal morbidity in a general intensive care unit in Nigeria: clinical profiles and outcomes

BACKGROUND

Data on outcomes of obstetric admissions to intensive care units can serve as useful markers for assessing the quality of maternal care. We evaluated the intensive care unit utilization rate, diagnoses, case-fatality rate, mortality rate and associated factors among obstetric patients.

METHODS

A prospective observational study of obstetric patients admitted to the general intensive care unit was performed. Women at 24 or more weeks of gestation, or within six weeks postpartum, who were admitted to the intensive care unit constituted the study population.

RESULTS

A total of 101 obstetric patients were admitted to the intensive care unit. Obstetric patients accounted for approximately 12% of all intensive care unit admissions. Over 90% of admissions were from direct obstetric morbidity such as hypertensive disorders (41.6%), major obstetric haemorrhage (37.6%) and sepsis (11.9%). Forty-three women (42.6%) died, giving an overall mortality rate of 1 in 2.4. Sepsis had the highest case-fatality rate (1 in 1.7) followed by obstetric haemorrhage (1 in 2.1) and hypertensive disorders (1 in 3.6). In univariable logistic regression analysis, abdominal delivery and/or peripartum hysterectomy, had 2.7-fold (95% CI 1.1 to 6.5) increased risk of maternal death as compared to vaginal delivery.

CONCLUSION

Direct obstetric morbidities constituted the leading reasons for obstetric admissions to the intensive care unit, with sepsis accounting for the highest case-fatality rate. Abdominal delivery and/or peripartum hysterectomy increased risk of death among obstetric admissions.

Maternal death and obstetric care audits in Nigeria: a systematic review of barriers and enabling factors in the provision of emergency care

Background

Maternal death reviews and obstetric audits identify causes and circumstances related to occurrence of a maternal death or serious complication and inform improvements in quality of care. Given Nigeria’s high maternal mortality, the lessons learned from past experiences can provide a good evidence base for informed decision making. We aimed to synthesise findings from maternal death reviews and other obstetric audits conducted in Nigeria through a systematic review, seeking to identify common barriers and enabling factors related to the provision of emergency obstetric care.

Methods

We searched for maternal death reviews and obstetric care audits reported in the published literature from 2000–2014. A ‘best-fit’ framework approach was used to extract data using a structured data extraction form. The articles that met the inclusion criteria were assessed using a nine point quality score.

Results

Of the 1,841 abstracts and titles at initial screening, 329 full text articles were reviewed and 43 papers fulfilled the inclusion criteria. Four types of barriers were reported related to: transport and referral; health workers; availability of services; and organisational factors. Three elements stand out in Nigeria as contributing to maternal mortality: delays in Caesarean section, unavailability of magnesium sulphate and lack of safe blood transfusion services.

Conclusions

Obstetric care reviews and audits are useful activities to undertake and should be promoted by improving the processes used to conduct them, as well as extending their implementation to rural and basic level health facilities and to the community. Urgent areas for quality improvement in obstetric care, even in tertiary and teaching hospitals should focus on organisational factors to reduce delays in conducting Caesarean section and making blood and magnesium sulphate available for all who need these interventions.

Causes of and factors associated with stillbirth in low- and middle-income countries: a systematic literature review

BACKGROUND

Annually, 2.6 million stillbirths occur worldwide, 98% in developing countries. It is crucial that we understand causes and contributing factors.

METHODS

We conducted a systematic review of studies reporting factors associated with and cause(s) of stillbirth in low- and middle-income countries (2000-13). Narrative synthesis to compare similarities and differences between studies with similar outcome categories.

MAIN RESULTS

A total of 142 studies with 2.1% from low-income settings were investigated; most report on stillbirths occurring at health facility level. Definition of stillbirth varied; 10.6% of studies (mainly upper middle-income countries) used a cut-off point of ≥22 weeks of gestation and 32.4% (mainly lower income countries) used ≥28 weeks of gestation. Factors reported to be associated with stillbirth include poverty and lack of education, maternal age (>35 or <20 years), parity (1, ≥5), lack of antenatal care, prematurity, low birthweight, and previous stillbirth. The most frequently reported cause of stillbirth was maternal factors (8-50%) including syphilis, positive HIV status with low CD4 count, malaria and diabetes. Congenital anomalies are reported to account for 2.1-33.3% of stillbirths, placental causes (7.4-42%), asphyxia and birth trauma (3.1-25%), umbilical problems (2.9-33.3%), and amniotic and uterine factors (6.5-10.7%). Seven different classification systems were identified but applied in only 22% of studies that could have used a classification system. A high percentage of stillbirths remain 'unclassified' (3.8-57.4%).

CONCLUSION

To build capacity for perinatal death audit, clear guidelines and a suitable classification system to assign cause of death must be developed. Existing classification systems may need to be adapted. Better data and more data are urgently needed.