Extreme prematurity: Factors associated with perinatal management and morbi-mortality in western Normandy, France.

BACKGROUND: Extreme prematurity (birth before 26 weeks of gestation), presents complex challenges and can lead to various complications. Survival rates of extremely preterm infants are lower in France than in other countries. The choice between active and palliative care is decisive in managing these births. OBJECTIVE: To conduct an observational study focused on factors associated with perinatal management, mortality, and morbidity outcomes among extremely preterm births in a regional perinatal network. METHODS: We undertook a retrospective, multicenter study within the western Normandy perinatal network, encompassing live births between 230/6 and 256/6 weeks from 2015 to 2019. Data were extracted from the perinatal network database and medical records. RESULTS: One hundred and seven infants born from 94 women were included. In the antenatal period, 79 were exposed to corticosteroids, 66 to magnesium sulfate, and 67 to antibiotics. Active care at birth was provided to 84 neonates of whom 42 survived. In total, 65 infants died. Among the 42 surviving neonates, 9 experienced no severe morbidity, 29 displayed one and 4 exhibited two criteria of severe morbidity. Active care was associated with gestational age. Neonatal survival was correlated with antenatal exposure to antibiotics and magnesium sulfate as well as with postnatal corticosteroids. We found no significant association between mortality and gestational age at birth. CONCLUSION: Prognostic factors must be weighed to discuss active antenatal care which is crucial for survival of extremely preterm neonates. Cooperation between obstetricians and neonatal caregivers is a cornerstone on a regional perinatal network scale.

Impact of maternal underweight on obstetric and neonatal prognosis: A retrospective study.

INTRODUCTION: Maternal underweight (BMI < 18.5) is an uncommon situation with potentially serious obstetric consequences, though data in the literature are scarce. OBJECTIVE: To compare the obstetrical prognosis of patients with normal BMI and BMI < 18.5. STUDY DESIGN: We performed a retrospective study in France (Normandy). RESULTS: We included 14,246 patients between January 2011 and November 2017, among whom 12,648 (88.8 %) had normal BMI, 1269 were considered mild underweight (17 ≤ BMI < 18.5 kg/m²) and 329 (2.3 %) were considered severe to moderate underweight (BMI < 17 kg/m²). The risk of preterm birth was all the greater as the thinness was severe (ORa: 1.34 [1.12-1.60] and ORa 1.77 [1.31-2.34]) and the risk of intrauterine growth retardation also increased with severe thinness (ORa: 1.63 [1.35-1.96] and ORa 2.28 [1.69-3.07]). The risk of a caesarean section or scheduled labour was no different. Neonatal parameters were comparable between the groups. CONCLUSION: Our study confirms an increased risk of preterm delivery and intrauterine growth retardation with increased thinness after adjusting for confounding factors. This link had only been shown previously in 2 studies Neither the type of prematurity (induced or spontaneous) nor the severity of prematurity is influenced by the severity of thinness; however, the low prevalence of thinness limits the power of these data. It would be interesting to study the medico-economic relevance of a policy of close maternal-foetal surveillance in this target population.

Frequency, causes and avoidability of outborn births in a French regional perinatal network.

OBJECTIVES: To evaluate the rate and circumstances of outborn deliveries within a French perinatal network, and to determine their avoidability. STUDY DESIGN: Cohort study including preterm infants <33 weeks gestation and/or weighing <1500g born outside a level III maternity unit in Lower Normandy region, France, in 2008-2010. In 2008 and 2009, only neonates transferred to the Caen University Teaching Hospital (CHU) were included. In 2010, all outborn neonates in the region were included by means of a medical information system program. A panel of 7 experts was set up to determine the avoidability of each outborn case using a two-stage modified Delphi procedure. Inter-expert agreement was evaluated using the kappa index. RESULTS: Sixty-four cases (71 neonates) were included. The outborn rate in 2010 was 16.1% (40/248, 95% CI (116-207%)). The most common reason for delivery was spontaneous onset of labour (57.8%). In 12 cases, the place of birth (level 2b maternity unit) was considered to be appropriate by the experts (term ≥32WG), but 8 cases involved infants of low birth weight (<1500g). For the 52 cases born in inappropriate sites, 9.6% were considered to be avoidable (kappa index=0.42 (p<10-3)). CONCLUSION: Our outborn rate meets regionalisation targets. Our method of expert evaluation identified a small percentage of avoidable births in inappropriate sites. Regular reassessment of obstetric practices and good coordination between network actors are crucial to improve the management of pregnancies at risk of outborn delivery.