Publications by authors named "Pascal Vaast"

Background: Congenital diaphragmatic hernia (CDH) is a rare disease associated with major nutritional and digestive morbidities. Oral feeding autonomy remains a major issue for the care and management of these patients. The aim of this study was to specify the perinatal risk factors of delayed oral feeding autonomy in patients treated for CDH.

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Congenital diaphragmatic hernia (CDH) is associated with pulmonary hypoplasia and respiratory morbidity. To assess whether respiratory morbidity during the first 2 years of life in infants with left-sided CDH is associated with fetal lung volume (FLV) evaluated by the observed-to-expected FLV ratio (o/e FLV) on antenatal magnetic resonance imaging (MRI). In this retrospective study, o/e FLV measures were collected.

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Background: To define a threshold of maternal antibodies at risk of severe fetal anemia in patients followed for anti-RH1 alloimmunization (AI).

Study, Design, And Methods: We conducted a retrospective study of patients followed for anti-RH1 AI at the Lille University Hospital. The first group, severe anemia, included patients who received one or more in utero transfusions (IUT) or who were induced before 37 weeks of pregnancy for suspected severe fetal anemia.

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Our objective is to determine perinatal factors contributing to the development of pulmonary hypertension (PH) in patients with isolated giant omphaloceles (GO). All cases of omphaloceles that underwent prenatal and postnatal care at the University Hospital of Lille between 1996 and 2021 were reviewed. We included all infants with isolated GO, including at least a part of the liver, who were treated by delayed surgical closure.

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Congenital diaphragmatic hernia (CDH) is associated with abnormal pulmonary development, which is responsible for pulmonary hypoplasia with structural and functional abnormalities in pulmonary circulation, leading to the failure of the cardiorespiratory adaptation at birth. Despite improvement in treatment options and advances in neonatal care, mortality remains high, at close to 15 to 30%. Several risk factors of mortality and morbidities have been validated in fetuses with CDH.

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Hydrolethalus syndrome (HLS) is a rare lethal fetal malformation disorder related to ciliogenesis disruption. This condition is more frequent in Finland where a founder missense variant in the HYLS1 gene was identified. No other HYLS1 variant has hitherto been implicated in HLS.

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Resuscitation at birth of infants with Congenital Diaphragmatic Hernia (CDH) remains highly challenging because of severe failure of cardiorespiratory adaptation at birth. Usually, the umbilical cord is clamped immediately after birth. Delaying cord clamping while the resuscitation maneuvers are started may: (1) facilitate blood transfer from placenta to baby to augment circulatory blood volume; (2) avoid loss of venous return and decrease in left ventricle filling caused by immediate cord clamping; (3) prevent initial hypoxemia because of sustained uteroplacental gas exchange after birth when the cord is intact.

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Article Synopsis
  • This study aimed to evaluate if the side (right or left) of congenital diaphragmatic hernia (CDH) influences the survival chances of newborns in intensive care.
  • Analyzed data from 506 cases showed a higher survival rate for left CDH (74%) compared to right CDH (49%), but the side alone wasn’t directly linked to increased mortality after accounting for other factors.
  • Key findings indicated that liver herniation and lung-to-head ratio are significant predictors of mortality, while the laterality of CDH did not significantly affect survival rates after adjustments.
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  • The study investigates how different maternal red blood cell (RBC) antibodies affect the treatment and outcomes of fetal anemia during pregnancies from 1999 to 2015.
  • It compares three types of antibody responses: anti-D, other Rh group antibodies, and anti-K1, finding that anti-K1 causes more severe fetal anemia than anti-D.
  • Additionally, having anti-D alongside other antibodies leads to a quicker decrease in hemoglobin levels compared to isolated anti-D cases.
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Background: Starting resuscitation before clamping the umbilical cord at birth may progressively increase pulmonary blood flow while umbilical venous blood flow is still contributing to maintenance of oxygenation and left ventricle preload.

Objective: To evaluate the feasibility, safety, and effects of intact cord resuscitation (ICR) on cardiorespiratory adaptation at birth in newborn infants with CDH.

Study Design: Prospective, observational, single-center pilot study.

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Article Synopsis
  • This study looked at how to tell if a baby might need another blood transfusion after getting one, by measuring a certain blood flow speed in the brain and checking how much their blood drops each day.
  • They studied 38 patients who had at least two transfusions and compared blood flow speeds before each transfusion with expected blood levels.
  • The researchers found that after the second transfusion, checking how much blood decreases was better for predicting problems than just looking at blood flow speeds, but they need to study more patients to be sure about their findings.
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Background And Objective: Several studies have shown the benefits of delayed cord clamping (DCC) in preterm and in healthy newborns at short and long term. Our objective was to evaluate the potentials benefits and risks of DCC in red cell alloimmunization.

Methods: This was a comparative before/after study of all living born neonates followed after fetal anemia requiring in utero transfusion.

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Tianeptine, an atypical antidepressant, has been found to exhibit a potential for abuse. The use of therapeutic doses of tianeptine during pregnancy has never raised safety concerns. However, the impact of tianeptine abuse on the mother-child dyad has never been assessed.

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Objective: To explore anxiety and pain felt by women undergoing chorionic villus sampling (CVS) and amniocentesis (AC).

Method: We prospectively questioned 254 women (67 undergoing CVS, 187 AC) before the procedure on their anxiety, after the procedure on their pain felt, and the support they received or desired. The medical team collected technical information concerning each procedure.

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Introduction: Fetal hydrops caused by anemia from parvovirus B19 infection (FH-B19) is rare. Doppler measurement of the middle cerebral artery peak systolic velocity (PSV-MCA) improves its prenatal diagnosis, but its frequency and prognosis are still poorly known. Despite improved survival due to in utero transfusions, the possibility of late neurological sequelae makes prognosis uncertain.

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Objective: To report postnatal tracheal changes after in utero fetoscopic balloon tracheal occlusion in severe congenital diaphragmatic hernia (CDH).

Design: Case series.

Setting: Tertiary care center, CDH National Reference Center.

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Article Synopsis
  • The study looked at how often a condition called TAPS happens in pregnant moms having identical twins.
  • They found TAPS in 3 out of 142 cases, which means it's pretty rare but still important to check for.
  • Doctors can help manage TAPS by using special treatments before the babies are born, like giving blood transfusions or separating the blood flow between the twins.
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Congenital diaphragmatic hernia (CDH) affects one in 2500 to 5000 births and can be detected in utero by means of ultrasound screening Associated structural problems aggravate the prognosis. The survival rate is 70% or more for cases managed in tertiary care centers. The commonest causes of neonatal death in this setting are pulmonary hypoplasia and pulmonary hypertension.

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Objectives: We studied the vascular effects of betamethasone (BM) and/or tracheal occlusion (TO) in fetal rabbits with surgically induced congenital diaphragmatic hernia (CDH).

Methods: At day 23 (pseudoglandular phase; term = 31 d), 54 ovarian-end fetuses from 27 does underwent induction of CDH. Thirteen did receive either 0.

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Glucocorticoids are given antenatally to promote pulmonary epithelial maturation and prevent respiratory distress syndrome in premature newborns. In contrast to airway changes, effects on vessels are less documented. We hypothesized that antenatal betamethasone (BM) administration promotes vascular development.

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