Umberto Simeoni

Prof. Dr. Umberto Simeoni

Department Woman-Mother-Child, DOHaD Laboratory and Division of Pediatrics, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.

Research Focus & Metrics

Academic Career Length

46Years (1981-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 March 2015 in JAMA Pediatrics
Verified
Journal Article
Open access
PDF file
PAPierre-Yves Ancel
Pierre-Yves Ancel
FGFrançois Goffinet
François Goffinet
PKPierre Kuhn
Pierre Kuhn
BLBruno Langer
Bruno Langer
JMJacqueline Matis
Jacqueline Matis
MKMonique Kaminski
Monique Kaminski
Previous cohort studies1-7 suggest that survival of infants born before 27 weeks’ gestation has improved during the past 2 decades. However, disability rates remain high at these gestational ages.8-10 Moreover, countries differ substantially in their organization of care, available resources, national laws, and cultural preferences regarding provision of proactive care. Therefore, to provide the best available information for parents and medical staff to use in making treatment decisions, mortality and morbidity must be monitored, and studies should be conducted in countries with different attitudes toward active care at early gestational ages.

1 May 2013 in Neonatology
Verified
Journal Article
Closed access
DSDavid G. Sweet
David G. Sweet
VCVirgilio Carnielli
Virgilio Carnielli
GGGorm Greisen
Gorm Greisen
MHMikko Hallman
Mikko Hallman
EOEren Ozek
Eren Ozek
HHHenry L. Halliday
Henry L. Halliday
Despite recent advances in the perinatal management of neonatal respiratory distress syndrome (RDS), controversies still exist. We report updated recommendations of a European Panel of expert neonatologists who developed consensus guidelines after critical examination of the most up-to-date evidence in 2007 and 2010. This second update of the guidelines is based upon published evidence up to the end of 2012. Strong evidence exists for the role of antenatal steroids in RDS prevention, but it is still not clear if the benefit of repeated courses on respiratory outcomes outweighs the risk of adverse outcomes in the short and long term. Many practices involved in preterm neonatal stabilization at birth are not evidence based, including oxygen administration and positive pressure lung inflation, and they may at times be harmful. Surfactant replacement therapy is crucial in the management of RDS but the best preparation, optimal dose and timing of administration at different gestations is not completely clear. In addition, use of very early continuous positive airway pressure (CPAP) has altered the indications for prophylactic surfactant administration. Respiratory support in the form of mechanical ventilation may be lifesaving but can cause lung injury, and protocols should be directed at avoiding mechanical ventilation where possible by using non-invasive respiratory support such as CPAP. For babies with RDS to have best outcomes, it is essential that they have optimal supportive care, including maintenance of normal body temperature, proper fluid management, good nutritional support, appropriate management of the ductus arteriosus and support of the circulation to maintain adequate tissue perfusion.

1 June 2010 in Pediatrics
Verified
Journal Article
Closed access
PDF file
FSFabrizio Sandri
Fabrizio Sandri
RPRichard Plavka
Richard Plavka
GAGina Ancora
Gina Ancora
USUmberto Simeoni
Umberto Simeoni
ZSZbyněk Stranak
Zbyněk Stranak
FGfor the CURPAP Study Group
for the CURPAP Study Group
OBJECTIVE: Early surfactant followed by extubation to nasal continuous positive airway pressure (nCPAP) compared with later surfactant and mechanical ventilation (MV) reduce the need for MV, air leaks, and bronchopulmonary dysplasia. This randomized, controlled trial investigated whether prophylactic surfactant followed by nCPAP compared with early nCPAP application with early selective surfactant would reduce the need for MV in the first 5 days of life. METHODS: A total of 208 inborn infants who were born at 25 to 28 weeks9 gestation and were not intubated at birth were randomly assigned to prophylactic surfactant or nCPAP within 30 minutes of birth. Outcomes were assessed within the first 5 days of life and until death or discharge of the infants from hospital. RESULTS: Thirty-three (31.4%) infants in the prophylactic surfactant group needed MV in the first 5 days of life compared with 34 (33.0%) in the nCPAP group (risk ratio: 0.95 [95% confidence interval: 0.64–1.41]; P = .80). Death and type of survival at 28 days of life and 36 weeks9 postmenstrual age and incidence of main morbidities of prematurity (secondary outcomes) were similar in the 2 groups. A total of 78.1% of infants in the prophylactic surfactant group and 78.6% in the nCPAP group survived in room air at 36 weeks9 postmenstrual age. CONCLUSIONS: Prophylactic surfactant was not superior to nCPAP and early selective surfactant in decreasing the need for MV in the first 5 days of life and the incidence of main morbidities of prematurity in spontaneously breathing very preterm infants on nCPAP.

5 April 2012 in BMJ Open
Verified
Journal Article
Open access
PDF file
jean-christophe rozejean-christophe roze
jean-christophe roze
DDDominique Darmaun
Dominique Darmaun
Clair--Yves BOQUIENClair--Yves BOQUIEN
Clair--Yves BOQUIEN
CFCyril Flamant
Cyril Flamant
JPJean-Charles Picaud
Jean-Charles Picaud
PAPierre-Yves Ancel
Pierre-Yves Ancel
Context Supplementation of breast milk is difficult once infants suckle the breast and is often discontinued at end of hospitalisation and after discharge. Thus, breastfed preterm infants are exposed to an increased risk of nutritional deficit with a possible consequence on neurodevelopmental outcome. Objective To assess the relationship between breast feeding at time of discharge, weight gain during hospitalisation and neurodevelopmental outcome. Design Observational cohort study. Setting Two large, independent population-based cohorts of very preterm infants: the Loire Infant Follow-up Team (LIFT) and the EPIPAGE cohorts. Patients 2925 very preterm infants alive at discharge. Main outcome measure Suboptimal neurodevelopmental outcome, defined as a score in the lower tercile, using Age and Stages Questionnaire at 2 years in LIFT and Kaufman Assessment Battery for Children Test at 5 years in EPIPAGE. Two propensity scores for breast feeding at discharge, one for each cohort, were used to reduce bias. Results Breast feeding at time of discharge concerned only 278/1733 (16%) infants in LIFT and 409/2163 (19%) infants in EPIPAGE cohort. Breast feeding is significantly associated with an increased risk of losing one weight Z-score during hospitalisation (LIFT: n=1463, adjusted odd ratio (aOR)=2.51 (95% CI 1.87 to 3.36); EPIPAGE: n=1417, aOR=1.55 (95% CI 1.14 to 2.12)) and with a decreased risk for a suboptimal neurodevelopmental assessment (LIFT: n=1463, aOR=0.63 (95% CI 0.45 to 0.87); EPIPAGE: n=1441, aOR=0.65 (95% CI 0.47 to 0.89) and an increased chance of having a head circumference Z-score higher than 0.5 at 2 years in LIFT cohort (n=1276, aOR=1.43 (95% CI 1.02 to 2.02)) and at 5 years in EPIPAGE cohort (n=1412, aOR=1.47 (95% CI 1.10 to 1.95)). Conclusions The observed better neurodevelopment in spite of suboptimal initial weight gain could be termed the ‘apparent breastfeeding paradox’ in very preterm infants. Regardless of the mechanisms involved, the current data provide encouragement for the use of breast feeding in preterm infants.

1 June 2010 in Neonatology
Verified
Journal Article
Closed access
PDF file
DSDavid G. Sweet
David G. Sweet
VCVirgilio Carnielli
Virgilio Carnielli
GGGorm Greisen
Gorm Greisen
MHMikko Hallman
Mikko Hallman
EOEren Ozek
Eren Ozek
HHHenry L. Halliday
Henry L. Halliday
Despite recent advances in the perinatal management of neonatal respiratory distress syndrome (RDS), controversies still exist. We report the updated recommendations of a European panel of expert neonatologists who had developed consensus guidelines after critical examination of the most up-to-date evidence in 2007. These updated guidelines are based upon published evidence up to the end of 2009. Strong evidence exists for the role of a single course of antenatal steroids in RDS prevention, but the potential benefit and long-term safety of repeated courses are unclear. Many practices involved in preterm neonatal stabilisation at birth are not evidence-based, including oxygen administration and positive pressure lung inflation, and they may at times be harmful. Surfactant replacement therapy is crucial in the management of RDS, but the best preparation, optimal dose and timing of administration at different gestations is not always clear. Respiratory support in the form of mechanical ventilation may also be lifesaving, but can cause lung injury, and protocols should be directed at avoiding mechanical ventilation where possible by using nasal continuous positive airways pressure or nasal ventilation. For babies with RDS to have best outcomes, it is essential that they have optimal supportive care, including maintenance of a normal body temperature, proper fluid management, good nutritional support, management of the ductus arteriosus and support of the circulation to maintain adequate tissue perfusion.

1 February 2015 in Best Practice & Research Clinical Obstetrics & Gynaecology
Verified
Journal Article
Closed access
DMD. Mitanchez
D. Mitanchez
CYCatherine YZYDORCZYK
Catherine YZYDORCZYK
BSB. Siddeek
B. Siddeek
FBF. Boubred
F. Boubred
MBM. Benahmed
M. Benahmed
USUmberto Simeoni
Umberto Simeoni