Practice variation in late-preterm deliveries: a physician survey

Assessment of morbidity and mortality in newborns with late prematurity: experience of a reference maternity in the northeast of Brazil

BACKGROUND

Late preterm infants show high rates of adverse perinatal outcomes. The aim of this study is to assess the morbidity and mortality of newborns (NBs) with late preterm birth in a reference maternity hospital in northeastern Brazil.

METHODS

Retrospective cohort study from March 1 to July 15, 2017. A total of 204 NBs with gestational age between 34 and 36 weeks and six days were evaluated and compared to 205 full-term NBs (39 and 40 weeks and six days). Perinatal outcomes including neonatal morbidity were evaluated. The Student's t and ANOVA tests were used for normal variables, and the Wilcoxon, Mann-Whitney and Kruskal-Wallis tests for non-normal variables.

RESULTS

Late preterm infants showed significant higher rates of hypothermia, hypoglycemia, respiratory distress syndrome, jaundice in need of phototherapy (67.6%), admission to the neonatal intensive care unit (ICU), and difficulty breastfeeding compared to full-term NBs (p<0.001). Respiratory distress was the main indication for the admission of late preterm infants (p<0.001) to neonatal ICU. Late preterm infants had a longer hospital stay (6.9 vs. 3.7 days, p<0.001). There were three deaths in the group of late preterm NBs, and none in the group of term NBs.

CONCLUSIONS

Late preterm NBs presented higher rates of morbidity and mortality when compared to full-term NBs.

Center Variation in the Delivery of Indicated Late Preterm Births

Objective Evidence for optimal timing of delivery for some pregnancy complications at late preterm gestation is limited. The purpose of this study was to identify center variation of indicated late preterm births. Study design We performed an analysis of singleton late preterm and term births from a large U.S. retrospective obstetrical cohort. Births associated with spontaneous preterm labor, major congenital anomalies, chorioamnionitis, and emergency cesarean were excluded. We used modified Poisson fixed effects logistic regression with interaction terms to assess center variation of indicated late preterm births associated with four medical/obstetric comorbidities after adjusting for socio-demographics, comorbidities, and hospital/provider characteristics. Results We identified 150,055 births from 16 hospitals; 9,218 were indicated late preterm births. We found wide variation of indicated late preterm births across hospitals. The extent of center variation was greater for births associated with preterm premature rupture of membranes (risk ratio [RR] across sites: 0.45-3.05), hypertensive disorders of pregnancy (RR across sites: 0.36-1.27), and placenta previa/abruption (RR across sites: 0.48-1.82). We found less center variation for births associated with diabetes (RR across sites: 0.65-1.39). Conclusion Practice variation in the management of indicated late preterm deliveries might be a source of preventable late preterm birth.

Preeclampsia and preterm delivery: A population-based case-control study

OBJECTIVE

To determine the contribution of preeclampsia toward preterm birth in primiparous women.

METHODS

This large population-based case-control study used the Aberdeen Maternity and Neonatal Databank to analyze data on primiparous women with singleton pregnancies, who delivered between 1997 and 2012.

RESULTS

A significant positive association was found between preeclampsia and preterm birth (adjusted odds ratio 4.43; 95% confidence interval 3.80-5.16). Magnitude of association varied according to the onset of delivery and year of delivery.

CONCLUSION

Preeclampsia is an important contributor to preterm delivery in this setting and therefore a potentially useful condition to target in order to reduce preterm rates.

Neonatal outcomes and delivery of care for infants born late preterm or moderately preterm: a prospective population-based study

OBJECTIVE

To describe neonatal outcomes and explore variation in delivery of care for infants born late (34-36  weeks) and moderately (32-33 weeks) preterm (LMPT).

DESIGN/SETTING

Prospective population-based study comprising births in four major maternity centres, one midwifery-led unit and at home between September 2009 and December 2010. Data were obtained from maternal and neonatal records.

PARTICIPANTS

All LMPT infants were eligible. A random sample of term-born infants (≥37 weeks) acted as controls.

OUTCOME MEASURES

Neonatal unit (NNU) admission, respiratory and nutritional support, neonatal morbidities, investigations, length of stay and postnatal ward care were measured. Differences between centres were explored.

RESULTS

1146 (83%) LMPT and 1258 (79% of eligible) term-born infants were recruited. LMPT infants were significantly more likely to receive resuscitation at birth (17.5% vs 7.4%), respiratory (11.8% vs 0.9%) and nutritional support (3.5% vs 0.3%) and were less likely to be fed breast milk (64.2% vs 72.2%) than term infants. For all interventions and morbidities, a gradient of increasing risk with decreasing gestation was evident. Although 60% of late preterm infants were never admitted to a NNU, 83% required medical input on postnatal wards. Clinical management differed significantly between services.

CONCLUSIONS

LMPT infants place high demands on specialist neonatal services. A substantial amount of previously unreported specialist input is provided in postnatal wards, beyond normal newborn care. Appropriate expertise and planning of early care are essential if such infants are managed away from specialised neonatal settings. Further research is required to clarify optimal and cost-effective postnatal management for LMPT babies.

Práticas de atenção hospitalar ao recém-nascido saudável no Brasil

O objetivo do estudo foi avaliar o cuidado ao recém-nascido saudável a termo e identificar variações nesse cuidado no atendimento ao parto e na primeira hora de vida. Utilizou-se a base de dados da pesquisa Nascer no Brasil. Foram estimadas as razões de produtos cruzados OR brutas e ajustadas entre as características do hospital, maternas e de assistência ao parto com os desfechos: aspiração de vias aéreas e gástrica, uso do oxigênio inalatório, uso de incubadora, contato pele a pele, alojamento conjunto e oferta do seio materno na sala de parto e na primeira hora de vida. Foi observada grande variação das práticas usadas na assistência ao recém-nascido a termo na sala de parto. Práticas consideradas inadequadas como uso de oxigênio inalatório (9,5%), aspiração de vias aéreas (71,1%) e gástrica (39,7%) e uso de incubadora (8,8%) foram excessivamente usadas. A ida ao seio na sala de parto foi considerada baixa (16,1%), mesmo nos hospitais com título de Hospital Amigo da Criança (24%). Esses resultados sugerem baixos níveis de conhecimento e aderência às boas práticas clínicas.

Demystifying animal models of adverse pregnancy outcomes: touching bench and bedside

This represents an overview of the use of animal models to study the adverse pregnancy outcomes seen in humans. The purpose is to entice clinicians to utilize some of this information to seek out the literature and have more meaningful and profitable discussions with their academic colleagues and enhance transdisciplinary research in reproductive health.