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Huang S, Yitayew M, Rozycki HJ. The contribution of low Apgar scores in identifying neonates with short-term morbidities in a large single center cohort. J Perinatol 2024; 44:865-872. [PMID: 38548866 PMCID: PMC11161404 DOI: 10.1038/s41372-024-01944-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 01/30/2024] [Accepted: 03/15/2024] [Indexed: 06/09/2024]
Abstract
OBJECTIVE To evaluate the association and utility of low 1- and 5-min Apgar scores to identify short-term morbidities in a large newborn cohort. METHODS 15,542 infants >22 weeks gestation from a single center were included. Clinical data and low Apgar scores were analyzed for significance to ten short-term outcomes and were used to construct Receiver Operating Characteristic Curves and the AUC calculated for ten outcomes. RESULTS A low Apgar score related to all (1-min) or most (5-min) outcomes by univariate and multivariate logistic regression analysis. Including any of the 4 low Apgar scores only improved the clinical factor AUC by 0.9% ± 2.7% (±SD) and was significant in just 5 of the 40 score/outcome scenarios. CONCLUSION The contribution of a low Apgar score for identifying risk of short-term morbidity does not appear to be clinically significant.
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Affiliation(s)
- Samuel Huang
- School of Medicine, Virginia Commonwealth University, Children's Hospital of Richmond at VCU, Richmond, VA, USA
| | - Miheret Yitayew
- School of Medicine, Virginia Commonwealth University, Children's Hospital of Richmond at VCU, Richmond, VA, USA
- Division of Neonatal Medicine, Children's Hospital of Richmond at VCU, Richmond, VA, USA
| | - Henry J Rozycki
- School of Medicine, Virginia Commonwealth University, Children's Hospital of Richmond at VCU, Richmond, VA, USA.
- Division of Neonatal Medicine, Children's Hospital of Richmond at VCU, Richmond, VA, USA.
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2
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Mitha A, Chen R, Razaz N, Johansson S, Stephansson O, Altman M, Bolk J. Neurological development in children born moderately or late preterm: national cohort study. BMJ 2024; 384:e075630. [PMID: 38267070 DOI: 10.1136/bmj-2023-075630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
OBJECTIVE To assess long term neurodevelopmental outcomes of children born at different gestational ages, particularly 32-33 weeks (moderately preterm) and 34-36 weeks (late preterm), compared with 39-40 weeks (full term). DESIGN Nationwide cohort study. SETTING Sweden. PARTICIPANTS 1 281 690 liveborn singleton children without congenital malformations born at 32+0 to 41+6 weeks between 1998 and 2012. MAIN OUTCOME MEASURES The primary outcomes of interest were motor, cognitive, epileptic, hearing, and visual impairments and a composite of any neurodevelopmental impairment, diagnosed up to age 16 years. Hazard ratios and 95% confidence intervals were estimated using Cox regression adjusted for parental and infant characteristics in the study population and in the subset of full siblings. Risk differences were also estimated to assess the absolute risk of neurodevelopmental impairment. RESULTS During a median follow-up of 13.1 years (interquartile range 9.5-15.9 years), 75 311 (47.8 per 10 000 person years) liveborn singleton infants without congenital malformations had at least one diagnosis of any neurodevelopmental impairment: 5899 (3.6 per 10 000 person years) had motor impairment, 27 371 (17.0 per 10 000 person years) cognitive impairment, 11 870 (7.3 per 10 000 person years) epileptic impairment, 19 700 (12.2 per 10 000 person years) visual impairment, and 20 393 (12.6 per 10 000 person years) hearing impairment. Children born moderately or late preterm, compared with those born full term, showed higher risks for any impairment (hazard ratio 1.73 (95% confidence interval 1.60 to 1.87) and 1.30 (1.26 to 1.35); risk difference 4.75% (95% confidence interval 3.88% to 5.60%) and 2.03% (1.75% to 2.35%), respectively) as well as motor, cognitive, epileptic, visual, and hearing impairments. Risks for neurodevelopmental impairments appeared highest from 32 weeks (the earliest gestational age), gradually declined until 41 weeks, and were also higher at 37-38 weeks (early term) compared with 39-40 weeks. In the sibling comparison analysis (n=349 108), most associations remained stable except for gestational age and epileptic and hearing impairments, where no association was observed; for children born early term the risk was only higher for cognitive impairment compared with those born full term. CONCLUSIONS The findings of this study suggest that children born moderately or late preterm have higher risks of adverse neurodevelopmental outcomes. The risks should not be underestimated as these children comprise the largest proportion of children born preterm. The findings may help professionals and families achieve a better risk assessment and follow-up.
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Affiliation(s)
- Ayoub Mitha
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- CHU Lille, Pediatric and Neonatal Intensive Care Transport Unit, Department of Emergency Medicine, Lille, France
- Université Paris Cité, CRESS, Obstetrical, Perinatal and Pediatric Epidemiology Research Team (EPOPé) INSERM, INRAE, Paris, France
| | - Ruoqing Chen
- School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, 518107, China
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Neda Razaz
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Stefan Johansson
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Olof Stephansson
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Maria Altman
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Department of Pediatric Rheumatology, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Jenny Bolk
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
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3
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Leybovitz-Haleluya N, Sheiner E, Pariente G, Wainstock T. The association between fetal gender in twin pregnancies and the risk of pediatric infectious diseases of the offspring: A population-based cohort study with long-term follow up. J Perinatol 2022; 42:1587-1591. [PMID: 35790850 DOI: 10.1038/s41372-022-01448-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 06/07/2022] [Accepted: 06/27/2022] [Indexed: 01/19/2023]
Abstract
OBJECTIVE We aimed to study the association between fetal gender in twin pregnancies and the risk for childhood infectious morbidity of the offspring. STUDY DESIGN A population-based cohort analysis was performed comparing total and subtypes of infectious related pediatric hospitalizations among males versus females offspring of twin pregnancies. The analysis included all dichorionic twins born between the years 1991-2021. A Kaplan-Meier survival curve was used to compare the cumulative infectious morbidity incidence, and a Cox proportional hazards model was constructed to adjust for confounders. RESULTS The study population included 4222 newborns (2111 males and 2111 females). Males had higher rates of infectious-related hospitalizations using a Cox proportional hazards model, an independent association was shown between male gender and infectious related hospitalizations of the offspring (Adjusted HR = 1.2, 95% CI: 1.1-1.4; p < 0.001). CONCLUSION Male gender in twin pregnancies is associated with an increased risk for long-term pediatric infectious morbidity.
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Affiliation(s)
- Noa Leybovitz-Haleluya
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
| | - Eyal Sheiner
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Gali Pariente
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Tamar Wainstock
- The Department of Public Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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Kim Y, Kim Y, Chang M, Lee B. Association between Thyroid Function and Respiratory Distress Syndrome in Preterm Infants. Pediatr Rep 2022; 14:497-504. [PMID: 36412665 PMCID: PMC9680353 DOI: 10.3390/pediatric14040058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 11/02/2022] [Accepted: 11/08/2022] [Indexed: 11/11/2022] Open
Abstract
Thyroid hormones are known to influence the production and secretion of pulmonary surfactant. The objective of this study was to explore the relationship between respiratory distress syndrome (RDS) and thyroid hormones. This was a retrospective study of preterm infants at 24−33 weeks gestational age from April 2017 to February 2019. T3, free T4 (fT4), and thyroid-stimulating hormone (TSH) were measured 1, 3, and 6 weeks after birth. Multivariate logistic regression analyses were performed to determine the relationship between RDS and TSH. A total of 146 infants were enrolled. Of these, 60 had RDS, 72 had no RDS, and 14 were excluded. T3 and TSH were lower in the RDS groups (p < 0.05) on the day of birth. Multivariate logistic regression analysis indicated that lower serum TSH levels immediately after birth were associated with a higher incidence of RDS (OR, 0.89; 95% CI, 0.81−0.97). The TSH level was associated with the incidence of RDS. This suggests that suppression of the hypothalamus−pituitary axis function contributes to RDS, which is the result of surfactant deficiency.
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Affiliation(s)
- Yonghyuk Kim
- Department of Pediatrics, Wonju Severance Christian Hospital, 20, Ilsan-ro, Wonju-si 26426, Korea
| | - Youngjin Kim
- Department of Pediatrics, Wonju Severance Christian Hospital, 20, Ilsan-ro, Wonju-si 26426, Korea
| | - Meayoung Chang
- Department of Pediatrics, Chungnam National University Hospital, Chungnam National University School of Medicine, 282, Munhwa-ro, Jung-gu, Daejeon 35015, Korea
| | - Byoungkook Lee
- Department of Pediatrics, Chungnam National University Sejong Hospital, 20, Bodeum 7-ro, Sejong-si 30099, Korea
- Correspondence: ; Tel.: +82-44-995-3822
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Brännström M, Dahm-Kähler P, Kvarnström N, Enskog A, Olofsson JI, Olausson M, Mölne J, Akouri R, Järvholm S, Nilsson L, Stigson L, Hagberg H, Bokström H. Reproductive, obstetric, and long-term health outcome after uterus transplantation: results of the first clinical trial. Fertil Steril 2022; 118:576-585. [PMID: 35697530 DOI: 10.1016/j.fertnstert.2022.05.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 05/11/2022] [Accepted: 05/11/2022] [Indexed: 01/13/2023]
Abstract
OBJECTIVE To evaluate reproductive, obstetric, and long-term health of the first completed study of uterus transplantation (UTx). DESIGN Prospective. SETTING University hospital. PATIENT(S) Nine live donor UTx procedures were conducted and seven were successful. Donors, recipients, and children born were observed. INTERVENTION(S) In vitro fertilization was performed with embryo transfer (ET) of day 2 or day 5 embryos in natural cycles. Pregnancies and growth trajectory of the children born were observed. Health-related quality of life, psychosocial outcome, and medical health of donors and recipients were evaluated by questionnaires. MAIN OUTCOME MEASURE(S) The results of in vitro fertilization, pregnancies, growth of children, and long-term health of patients were reported. RESULT(S) Six women delivered nine infants, with three women giving birth twice (cumulative birth rates of 86% and 67% in surgically successful and performed transplants, respectively). The overall clinical pregnancy rate (CPR) and live birth rate (LBR) per ET were 32.6% and 19.6%, respectively. For day 2 embryos, the CPR and LBR per ET were 12.5% and 8.6%, respectively. For day 5 embryos, the CPR and LBR per ET were 81.8% and 45.4%, respectively. Fetal growth and blood flow were normal in all pregnancies. Time of delivery (median in full pregnancy weeks + days [ranges]) by cesarean section and weight deviations was 35 + 3 (31 + 6 to 38 + 0) and -1% (-13% to 23%), respectively. Three women developed preeclampsia and four neonates acquired respiratory distress syndrome. All children were healthy and followed a normal growth trajectory. Measures of long-term health in both donors and recipients were noted to be favorable. When UTx resulted in a birth, scores for anxiety, depression, and relationship satisfaction were reassuring for both the donors and recipients. CONCLUSION(S) The results of this first complete UTx trial show that this is an effective infertility treatment, resulting in births of healthy children and associated with only minor psychological and medical long-term effects for donors and recipients. CLINICAL TRIAL REGISTRATION NUMBER NCT02987023.
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Affiliation(s)
- Mats Brännström
- Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Stockholm IVF-EUGIN, Stockholm, Sweden.
| | - Pernilla Dahm-Kähler
- Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Niclas Kvarnström
- Department of Transplantation, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anders Enskog
- Department of Anaesthesiology and Intensive Care, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Jan I Olofsson
- Department of Women's and Children's Health, Karolinska Institute, Stockholm, Sweden
| | - Michael Olausson
- Department of Transplantation, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Johan Mölne
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Randa Akouri
- Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Stina Järvholm
- Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Lars Nilsson
- Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Lennart Stigson
- Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Henrik Hagberg
- Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Hans Bokström
- Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Y It Matters—Sex Differences in Fetal Lung Development. Biomolecules 2022; 12:biom12030437. [PMID: 35327629 PMCID: PMC8946560 DOI: 10.3390/biom12030437] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/01/2022] [Accepted: 03/09/2022] [Indexed: 02/01/2023] Open
Abstract
Within this review, sex-specific differences in alveolar epithelial functions are discussed with special focus on preterm infants and the respiratory disorders associated with premature birth. First, a short overview about fetal lung development, the challenges the lung faces during perinatal lung transition to air breathing and respiratory distress in preterm infants is given. Next, clinical observations concerning sex-specific differences in pulmonary morbidity of human preterm infants are noted. The second part discusses potential sex-specific causes of pulmonary complications, including pulmonary steroid receptors and local lung steroid metabolism. With regard to pulmonary steroid metabolism, it is important to highlight which steroidogenic enzymes are expressed at which stage during fetal lung development. Thereafter, we review the knowledge concerning sex-specific aspects of lung growth and maturation. Special focus is given to alveolar epithelial Na+ transport as a driver of perinatal lung transition and the sex differences that were noted in this process.
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7
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Madajczak D, Daboval T, Lauterbach R, Łoniewska B, Błaż W, Szczapa T, Sadowska-Krawczenko I, Michalak-Kloc M, Sławska H, Borszewska-Kornacka M, Bokiniec R. Protocol for a multicenter, double-blind, randomized, placebo-controlled phase III trial of the inhaled β2-adrenergic receptor agonist salbutamol for transient tachypnea of the newborn (the REFSAL trial). Front Pediatr 2022; 10:1060843. [PMID: 36714639 PMCID: PMC9879660 DOI: 10.3389/fped.2022.1060843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 12/20/2022] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Transient tachypnea of the newborn (TTN), which results from inadequate absorption of fetal lung fluid, is the most common cause of neonatal respiratory distress. Stimulation of β-adrenergic receptors enhances alveolar fluid absorption. Therefore, the β2-adrenergic receptor agonist salbutamol has been proposed as a treatment for TTN. This study aims to evaluate the efficacy and safety of salbutamol as supportive pharmacotherapy together with non-invasive nasal continuous positive airway pressure (NIV/nCPAP) for the prevention of persistent pulmonary hypertension of the newborn (PPHN) in infants with TTN. METHODS AND ANALYSIS This multicenter, double-blind, phase III trial will include infants with a gestational age between 32 and 42 weeks who are affected by respiratory disorders and treated in eight neonatal intensive care units in Poland. A total of 608 infants within 24 h after birth will be enrolled and randomly assigned (1:1) to receive nebulized salbutamol with NIV or placebo (nebulized 0.9% NaCl) with NIV. The primary outcome is the percentage of infants with TTN who develop PPHN. The secondary outcomes are the severity of respiratory distress (assessed with the modified TTN Silverman score), frequency of need for intubation, duration of NIV and hospitalization, acid-base balance (blood pH, partial pressure of O2 and CO2, and base excess), and blood serum ionogram for Na+, K+, and Ca2+. DISCUSSION The Respiratory Failure with Salbutamol (REFSAL) study will be the first clinical trial to evaluate the efficacy and safety of salbutamol in the prevention of persistent pulmonary hypertension in newborns with tachypnea, and will improve short term outcomes. If successful, the study will demonstrate the feasibility of early intervention with NIV/nCPAP together with nebulized salbutamol in the management of TTN. ETHICS AND DISSEMINATION The study protocol was approved by the Bioethics Committee of the Medical University of Warsaw, Warsaw, Poland on November 16, 2020 (decision number KB/190/2020). All procedures will follow the principles of the Declaration of Helsinki. The results of the study will be submitted for knowledge translation in peer-reviewed journals and presented at national and international pediatric society conferences. CLINICAL TRIAL REGISTRATION It is registered at ClinicalTrials.gov NCT05527704, EudraCT 2020-003913-36; Protocol version 5.0 from 04/01/2022.
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Affiliation(s)
- Dariusz Madajczak
- Department of Neonatology and Neonatal Intensive Care, Medical University of Warsaw, Warsaw, Poland
| | - Thierry Daboval
- Department of Pediatrics - Division of Neonatology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | | | - Beata Łoniewska
- Department of Neonatology and Intensive Neonatal Care, Pomeranian Medical University, Szczecin, Poland
| | - Witold Błaż
- Clinical Department of Neonatology With Neonatal Intensive Care Unit, University of Rzeszow, Saint Jadwiga the Queen Clinical Provincial Hospital No 2, Rzeszow, Poland
| | - Tomasz Szczapa
- Department of Neonatology, Poznań University of Medical Sciences, Poznań, Poland
| | - Iwona Sadowska-Krawczenko
- Department of Neonatology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
| | - Marzena Michalak-Kloc
- Neonatology Clinical Department, Karol Marcinkowski University Hospital, Zielona Góra, Poland
| | - Helena Sławska
- Neonatology Unit, Specialist Hospital No 2, Bytom, Medical University of Silesia, Bytom, Poland
| | | | - Renata Bokiniec
- Department of Neonatology and Neonatal Intensive Care, Medical University of Warsaw, Warsaw, Poland
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8
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Laube M, Dornis D, Wenzel F, Thome UH. Epidermal growth factor strongly affects epithelial Na + transport and barrier function in fetal alveolar cells, with minor sex-specific effects. Sci Rep 2021; 11:15951. [PMID: 34354180 PMCID: PMC8342687 DOI: 10.1038/s41598-021-95410-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 07/18/2021] [Indexed: 12/15/2022] Open
Abstract
Male sex remains an independent risk factor for respiratory distress syndrome (RDS) in preterm infants. Insufficient Na+ transport-mediated alveolar fluid clearance contributes to RDS development and we previously demonstrated sex-specific differences in Na+ transport. The epidermal growth factor (EGF) is important during fetal lung development with possible influence on Na+ transport. Sex-specific effects of EGF during surfactant synthesis were shown. We thus determined whether EGF exerts sex-specific effects on Na+ transport in fetal alveolar cells. We analyzed sex-specific fetal distal lung epithelial (FDLE) cells exposed to EGF and related ligands with Ussing chambers, RT-qPCR and Western blots. EGF strongly reduced the epithelial Na+ channel (ENaC) mRNA levels in both male and female FDLE cells. This was corroborated by a markedly reduced ENaC activity, while amiloride-insensitive pathways as well as barrier function were raised by EGF. In contrast to chronic effects, acute effects of EGF were sex-specific, because Na+ transport was reduced only in males. AKT phosphorylation was elevated only in female cells, while pERK1/2 was increased in both male and female cells. EGF showed certain sex- and time-dependent effects in FDLE cells. Nevertheless, the results suggest that EGF is an unlikely cause for the sex-specific differences in Na+ transport.
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Affiliation(s)
- Mandy Laube
- Department of Pediatrics, Division of Neonatology, Center for Pediatric Research Leipzig (CPL), University of Leipzig, Liebigstrasse 19, 04103, Leipzig, Germany.
| | - Diana Dornis
- Department of Pediatrics, Division of Neonatology, Center for Pediatric Research Leipzig (CPL), University of Leipzig, Liebigstrasse 19, 04103, Leipzig, Germany
| | - Fine Wenzel
- Department of Pediatrics, Division of Neonatology, Center for Pediatric Research Leipzig (CPL), University of Leipzig, Liebigstrasse 19, 04103, Leipzig, Germany
| | - Ulrich H Thome
- Department of Pediatrics, Division of Neonatology, Center for Pediatric Research Leipzig (CPL), University of Leipzig, Liebigstrasse 19, 04103, Leipzig, Germany
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9
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Mitha A, Chen R, Altman M, Johansson S, Stephansson O, Bolk J. Neonatal Morbidities in Infants Born Late Preterm at 35-36 Weeks of Gestation: A Swedish Nationwide Population-based Study. J Pediatr 2021; 233:43-50.e5. [PMID: 33662344 DOI: 10.1016/j.jpeds.2021.02.066] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/27/2021] [Accepted: 02/24/2021] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To assess risk for neonatal morbidities among infants born late preterm at 35-36 gestational weeks, early term (37-38 weeks), and late-term (41 weeks) infants, compared with full-term (39-40 weeks) infants. STUDY DESIGN This nationwide population-based cohort study included 1 650 450 non-malformed liveborn singleton infants born at 35-41 weeks between 1998 and 2016 in Sweden. The relative risks for low Apgar score (0-3) at 5 minutes; respiratory, metabolic, infectious, and neurologic morbidities; and severe neonatal morbidity (composite outcome) were adjusted for maternal, pregnancy, delivery, and infant characteristics. RESULTS Compared with infants born at 39-40 weeks, the adjusted relative risks and proportions of infants born at 35-36 weeks were higher for metabolic morbidity 7.79 (95%, 7.61 to 7.97; 33.75% vs 3.11%), respiratory morbidity 5.54 (95% CI, 5.24 to 5.85; 5.49% vs 0.75%), severe neonatal morbidity 2.42 (95% CI, 2.27 to 2.59; 3.40% versus 1.03%), infectious morbidity 1.98 (95% CI, 1.83 to 2.14; 2.53% vs 0.95%), neurologic morbidity 1.74 (95% CI, 1.48 to 2.03; 0.54% vs 0.23%), and low Apgar score 2.07 (95% CI, 1.72 to 2.51; 0.42% vs 0.12%). The risks for respiratory, severe neonatal morbidity, infectious, neurologic morbidities, and low Apgar score were highest at 35 weeks, gradually decreased until 39 weeks, and increased during 39-41 weeks. CONCLUSIONS Infants born late preterm at 35-36 weeks of gestation are at increased risk of neonatal morbidities, although the absolute risks for severe neonatal morbidities are low. Our findings reinforce the need of preventing late preterm delivery to decrease the burden of neonatal morbidity and help professionals and families with a better risk assessment.
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Affiliation(s)
- Ayoub Mitha
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institute, Stockholm, Sweden; University Hospital Center Lille, Department of Neonatal Medicine, Jeanne de Flandre Hospital, Lille, France; University of de Paris, Epidemiology and Statistics Research Center/CRESS, French Institute of Health and Medical Research (U1153 - Obstetrical, Perinatal and Pediatric Epidemiology Research Team), National Institute for Agricultural Research, Hospital Tenon, Paris, France
| | - Ruoqing Chen
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institute, Stockholm, Sweden.
| | - Maria Altman
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institute, Stockholm, Sweden
| | - Stefan Johansson
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institute, Stockholm, Sweden; Department of Clinical Science and Education, Södersjukhuset, Karolinska Institute, Stockholm, Sweden; Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Olof Stephansson
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institute, Stockholm, Sweden
| | - Jenny Bolk
- Division of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institute, Stockholm, Sweden; Department of Clinical Science and Education, Södersjukhuset, Karolinska Institute, Stockholm, Sweden; Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
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10
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Li HX, Gao CJ, Cheng S, Mao ZL, Wang HY. Risk factors for respiratory assistance in premature infants. Exp Ther Med 2021; 21:237. [PMID: 33603845 PMCID: PMC7851612 DOI: 10.3892/etm.2021.9668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 12/10/2020] [Indexed: 11/06/2022] Open
Abstract
Premature infants are prone to dyspnea after birth due to immature development, and some infants require respiratory assistance. However, the risk factors for respiratory assistance in premature infants are rarely reported. The present study enrolled 3,394 premature infants (665 infants had been provided with respiratory assistance and 2,729 had not used respiratory assistance) to retrospectively analyze the risk factors associated with respiratory aid. The multivariate logistic regression analysis demonstrated that placental abnormality [odds ratio (OR)=1.284; P=0.048], the male sex (OR=0.696; P=0.001), delivery via cesarean section (OR=1.538; P<0.001), low 1-min Apgar score (OR=0.727; P<0.001), low birth weight (OR=0.999; P=0.005) and low gestational age (OR=0.616; P<0.001) were independent risk factors for respiratory assistance in premature infants. Overall, a number of risk factors, including placental abnormality, cesarean section, low 1-min Apgar score, low birth weight and small gestational age, were identified for respiratory assistance in premature infants. By conducting a risk assessment of risk factors at birth and using this information to provide timely respiratory assistance, the survival rates of premature infants may increase.
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Affiliation(s)
- Hai-Xin Li
- Department of Child Healthcare, Changzhou Women and Children Health Care Hospital, Changzhou, Jiangsu 213000, P.R. China
| | - Cai-Jie Gao
- Department of Infectious Disease, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China
| | - Shan Cheng
- Department of Infectious Disease, Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China
| | - Zhi-Lei Mao
- Department of Child Healthcare, Changzhou Women and Children Health Care Hospital, Changzhou, Jiangsu 213000, P.R. China
| | - Huai-Yan Wang
- Department of Child Healthcare, Changzhou Women and Children Health Care Hospital, Changzhou, Jiangsu 213000, P.R. China
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11
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Smyrni N, Koutsaki M, Petra M, Nikaina E, Gontika M, Strataki H, Davora F, Bouza H, Damianos G, Skouteli H, Mastroyianni S, Dalivigka Z, Dinopoulos A, Tzaki M, Papavasiliou A. Moderately and Late Preterm Infants: Short- and Long-Term Outcomes From a Registry-Based Cohort. Front Neurol 2021; 12:628066. [PMID: 33643206 PMCID: PMC7907517 DOI: 10.3389/fneur.2021.628066] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/08/2021] [Indexed: 11/24/2022] Open
Abstract
Background: While most studies on the association of preterm birth and cerebral palsy (CP) have focused on very preterm infants, lately, attention has been paid to moderately preterm [32 to <34 weeks gestational age (GA)] and late preterm infants (34 to <37 weeks GA). Methods: In order to report on the outcomes of a cohort of moderately and late preterm infants, derived from a population-based CP Registry, a comparative analysis of data on 95 moderately preterm infants and 96 late preterm infants out of 1,016 with CP, was performed. Results: Moderately preterm neonates with CP were more likely to have a history of N-ICU admission (p = 0.001) and require respiratory support (p < 0.001) than late preterm neonates. Birth weight was significantly related to early neonatal outcome with children with lower birth weight being more likely to have a history of N-ICU admission [moderately preterm infants (p = 0.006)/late preterm infants (p < 0.001)], to require ventilator support [moderately preterm infants (p = 0.025)/late preterm infants (p = 0.014)] and not to have neonatal seizures [moderately preterm infants (p = 0.044)/late preterm infants (p = 0.263)]. In both subgroups, the majority of children had bilateral spastic CP with moderately preterm infants being more likely to have bilateral spastic CP and less likely to have ataxic CP as compared to late preterm infants (p = 0.006). The prevailing imaging findings were white matter lesions in both subgroups, with statistically significant difference between moderately preterm infants who required ventilator support and mainly presented with this type of lesion vs. those who did not and presented with gray matter lesions, maldevelopments or miscellaneous findings. Gross motor function was also assessed in both subgroups without significant difference. Among late preterm infants, those who needed N-ICU admission and ventilator support as neonates achieved worse fine motor outcomes than those who did not. Conclusions: Low birth weight is associated with early neonatal problems in both moderately and late preterm infants with CP. The majority of children had bilateral spastic CP and white matter lesions in neuroimaging. GMFCS levels were comparable in both subgroups while BFMF was worse in late preterm infants with a history of N-ICU admission and ventilator support.
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Affiliation(s)
- Nikoletta Smyrni
- Second Department of Neurology, University General Hospital of Thessaloniki AHEPA, Thessaloniki, Greece
| | - Maria Koutsaki
- Third Pediatric Department, University General Hospital Attikon, Athens, Greece
| | - Marianna Petra
- Department of Orthopedics, Penteli Children's Hospital, Athens, Greece
| | - Eirini Nikaina
- Department of Pediatrics, Agia Sophia Children's Hospital, Athens, Greece
| | - Maria Gontika
- Department of Neurology, Evaggelismos General Hospital, Athens, Greece
| | - Helen Strataki
- First Department of Neurology, Aeginition Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Fotini Davora
- Department of Neurology, Papageorgiou General Hospital, Thessaloniki, Greece
| | - Helen Bouza
- Department of Neonatal Intensive Care Unit, Agia Sophia Children's Hospital, Athens, Greece
| | - George Damianos
- Department of Neurology, Penteli Children's Hospital, Athens, Greece
| | - Helen Skouteli
- Department of Pediatric Neurology, IASO General Hospital, Athens, Greece
| | | | - Zoi Dalivigka
- Rehabilitation Center, Children's Hospital Aglaia Kyriakou, Athens, Greece
| | - Argyris Dinopoulos
- Third Pediatric Department, University General Hospital Attikon, Athens, Greece
| | - Margarita Tzaki
- Neonatal Intensive Care Unit, Elena Venizelou General Hospital, Athens, Greece
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12
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Gender variations in neonatal and early infant mortality in India and Pakistan: a secondary analysis from the Global Network Maternal Newborn Health Registry. Reprod Health 2020; 17:178. [PMID: 33334358 PMCID: PMC7745348 DOI: 10.1186/s12978-020-01028-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 10/29/2020] [Indexed: 12/03/2022] Open
Abstract
Background To determine the gender differences in neonatal mortality, stillbirths, and perinatal mortality in south Asia using the Global Network data from the Maternal Newborn Health Registry. Methods This study is a secondary analysis of prospectively collected data from the three south Asian sites of the Global Network. The maternal and neonatal demographic, clinical characteristics, rates of stillbirths, early neonatal mortality (1–7 days), late neonatal mortality (8–28 days), mortality between 29–42 days and the number of infants hospitalized after birth were compared between the male and female infants. Results Between 2010 and 2018, 297,509 births [154,790 males (52.03%) and 142,719 females (47.97%)] from two Indian sites and one Pakistani site were included in the analysis [288,859 live births (97.1%) and 8,648 stillbirths (2.9%)]. The neonatal mortality rate was significantly higher in male infants (33.2/1,000 live births) compared to their female counterparts (27.4/1,000, p < 0.001). The rates of stillbirths (31.0 vs. 26.9/1000 births) and early neonatal mortality (27.1 vs 21.6/1000 live births) were also higher in males. However, there were no significant differences in late neonatal mortality (6.3 vs. 5.9/1000 live births) and mortality between 29–42 days (2.1 vs. 1.9/1000 live births) between the two groups. More male infants were hospitalized within 42 days after birth (1.8/1000 vs. 1.3/1000 live births, p < 0.001) than females. Conclusion The risks of stillbirths, and early neonatal mortality were higher among male infants than their female counterparts. However, there was no gender difference in mortality after 7 days of age. Our results highlight the importance of stratifying neonatal mortality into early and late neonatal period to better understand the impact of gender on neonatal mortality. The information from this study will help in developing strategies and identifying measures that can reduce differences in sex-specific mortality.
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Respiratory Distress Syndrome in Infants Delivered via Cesarean from Mothers with Preterm Premature Rupture of Membranes: A Propensity Score Analysis. J Pregnancy 2020; 2020:5658327. [PMID: 32802509 PMCID: PMC7415122 DOI: 10.1155/2020/5658327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 06/16/2020] [Accepted: 06/23/2020] [Indexed: 11/17/2022] Open
Abstract
Objective This study aimed to clarify the effects of cesarean delivery on neonatal respiratory morbidity when women had preterm premature rupture of membranes. Methods This retrospective study included women with preterm premature rupture of membranes who delivered from 23 weeks to 33 weeks of gestation between January 2009 and December 2014. Neonatal outcomes were compared between infants delivered by cesarean section and those delivered vaginally. The primary outcome was respiratory distress syndrome (RDS). Neonatal intubation and mechanical ventilation periods were secondary outcomes. Propensity score matching was used to compare outcomes between cesarean and vaginal delivery cases. Results There were 101 cesarean deliveries and 89 vaginal deliveries. A comparison of the presence or absence of neonatal complications based on the delivery type indicated a higher occurrence of RDS with cesarean deliveries (P = 0.025). The intubation and mechanical ventilation periods were not significantly longer in neonates delivered via cesarean section. Conclusions Cesarean delivery is a risk factor for neonatal RDS in women with preterm premature rupture of membranes. Trials identifying long-term neonatal prognoses are needed to further develop optimal management strategies in such cases.
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14
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Glucocorticoids Equally Stimulate Epithelial Na + Transport in Male and Female Fetal Alveolar Cells. Int J Mol Sci 2019; 21:ijms21010057. [PMID: 31861781 PMCID: PMC6982285 DOI: 10.3390/ijms21010057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 12/13/2019] [Accepted: 12/18/2019] [Indexed: 11/18/2022] Open
Abstract
Preterm infants frequently suffer from respiratory distress syndrome (RDS), possibly due to lower expression of epithelial Na+ channels (ENaC). RDS incidence is sex-specific, affecting males almost twice as often. Despite the use of antenatal glucocorticoids (GCs), the sex difference persists. It is still controversial whether both sexes benefit equally from GCs. We previously showed that Na+ transport is higher in female compared with male fetal distal lung epithelial (FDLE) cells. Since GCs increase Na+ transport, we hypothesized that their stimulating effect might be sex-specific. We analyzed FDLE cells with Ussing chambers and RT-qPCR in the presence or absence of fetal serum. In serum-free medium, GCs increased the ENaC activity and mRNA expression, independent of sex. In contrast, GCs did not increase the Na+ transport in serum-supplemented media and abolished the otherwise observed sex difference. Inhibition of the GC receptor in the presence of serum did not equalize Na+ transport between male and female cells. The GC-induced surfactant protein mRNA expression was concentration and sex-specific. In conclusion, female and male FDLE cells exhibit no sex difference in response to GCs with regard to Na+ transport, and GR activity does not contribute to the higher Na+ transport in females.
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15
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Cesarean section and the risk of neonatal respiratory distress syndrome: a meta-analysis. Arch Gynecol Obstet 2019; 300:503-517. [PMID: 31187205 DOI: 10.1007/s00404-019-05208-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/30/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE To explore the association between cesarean section (CS) and the risk of neonatal respiratory distress syndrome (RDS). METHODS We searched PubMed, Web of Science, and ClinicalTrials.gov database for studies related to the association between CS and the risk of neonatal RDS up to 25 August 2018. The pooled odds ratios (ORs) with 95% confidence intervals (CIs) were estimated using a random-effects model (REM). RESULTS A total of 26 studies from 25 available articles were included in this meta-analysis. For the association between CS and the risk of neonatal RDS, the pooled OR was 1.76 (95% CI 1.48-2.09). The pooled OR of the risk of neonatal RDS was 2.38 (95% CI 1.89-2.99) for elective CS and 1.85 (95% CI 1.34-2.56) for emergency CS. CONCLUSION This meta-analysis suggested that CS, elective CS, and emergency CS were associated with an increased risk of neonatal RDS.
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16
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Lu K, Chen X, Zhu W, Mao X, Yang Y, Qiu J, Zhang M, Cheng R. Terbutaline alleviates the lung injury in the neonatal rats exposed to endotoxin: Potential roles of epithelial sodium channels. Pediatr Pulmonol 2019; 54:280-288. [PMID: 30644180 PMCID: PMC6618278 DOI: 10.1002/ppul.24242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 12/15/2018] [Indexed: 12/18/2022]
Abstract
Intrauterine inflammation generates inflammatory mediators that damage the developing bronchoalveolar epithelium, resulting in neonatal lung injury. Lung fluid transport disorders are the main reasons for the development of pulmonary edema, an important pathology of lung injury. Previous studies suggested that epithelial sodium channels (ENaCs) play an important role in lung fluid transport. Here, we investigated whether changes in the expression of ENaCs were observed when neonatal rat lung injury was induced by maternal exposure to endotoxin. We also examined the therapeutic effect of terbutaline nebulizer inhalation on this injury. The results showed that maternal exposure to endotoxin increased the levels of TNF-α and IL-1β in bronchoalveolar lavage fluid, suppressed α-, β-, γ-ENaC in the neonatal rat lung, and resulted in the formation of pulmonary edema on postnatal days 1 and 7. Terbutaline up-regulated the expression of β- and γ-ENaC in the distal lung after 7 days of treatment. The potential signal molecules cAMP, PKA, and CREB expressions were increased after terbutaline treatment. In summary, maternal exposure to endotoxin decreased the expression of ENaCs in neonatal rats which, in turn, may exacerbate pulmonary edema. Inhalation of the β2-adrenergic receptor agonist terbutaline improved lung liquid clearance. By increasing the expression of sodium ion channels, the effective removal of alveolar fluid provides a new way for the prevention and treatment of neonatal lung injury.
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Affiliation(s)
- Keyu Lu
- Department of neonates, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Xu Chen
- Department of neonates, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Weiwei Zhu
- Department of neonates, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaonan Mao
- Department of neonates, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Yang Yang
- Department of neonates, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Jie Qiu
- Department of neonates, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Mingshun Zhang
- Key Laboratory of Antibody Technique of Ministry of Health, Nanjing Medical University, Nanjing, China.,Department of Immunology, Nanjing Medical University, Nanjing, China
| | - Rui Cheng
- Department of neonates, Children's Hospital of Nanjing Medical University, Nanjing, China
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17
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La Garde RP, Cheung PY, Yaskina M, Lee TF, O'Reilly M, Schmölzer GM. Sex Differences Between Female and Male Newborn Piglets During Asphyxia, Resuscitation, and Recovery. Front Pediatr 2019; 7:290. [PMID: 31380324 PMCID: PMC6646717 DOI: 10.3389/fped.2019.00290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 06/27/2019] [Indexed: 11/25/2022] Open
Abstract
Background: Male and female newborns have differences in their fetal development, fetal-to-neonatal transition, and postnatal morbidity. However, the cardiovascular fetal-to-neonatal adaption is similar between sexes. No study has examined sex differences in newborns during hypoxia, asphyxia, cardio-pulmonary resuscitation, or post-resuscitation recovery. Methods: Secondary analysis (two previous publications and two studies currently under peer-review) of 110 term newborn mixed breed piglets (1-3 days of age, weighing 2.0 ± 0.2 kg), which were exposed to 30 min normocapnic hypoxia followed by asphyxia until asystole, which was achieved by disconnecting the ventilator and clamping the endotracheal tube. This was followed by cardio-pulmonary resuscitation. For the analysis piglets were divided into female and male groups. Cardiac function, carotid blood flow, and cerebral and renal oxygenation were continuously recorded throughout the experiment. Results: A total of 35/41 (85%) female and 54/69 (78%) male piglets resuscitated achieved ROSC (p = 0.881). The median (IQR) time to achieve return of spontaneous circulation in females and males was 111 (80-228) s and 106 (80-206) s (p = 0.875), respectively. The 4-h survival rate was similar between females and males with 28/35 (80%) and 49/54 (91%) piglets surviving (p = 0.241), respectively. Conclusions: No difference between female and male newborn piglets was observed during hypoxia, asphyxia, resuscitation, and post-resuscitation recovery.
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Affiliation(s)
- Ramin P La Garde
- Medical University of Vienna, Vienna, Austria.,Neonatal Research Unit, Centre for the Studies of Asphyxia and Resuscitation, Royal Alexandra Hospital, Edmonton, AB, Canada
| | - Po-Yin Cheung
- Neonatal Research Unit, Centre for the Studies of Asphyxia and Resuscitation, Royal Alexandra Hospital, Edmonton, AB, Canada.,Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - Maryna Yaskina
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - Tze-Fun Lee
- Neonatal Research Unit, Centre for the Studies of Asphyxia and Resuscitation, Royal Alexandra Hospital, Edmonton, AB, Canada
| | - Megan O'Reilly
- Neonatal Research Unit, Centre for the Studies of Asphyxia and Resuscitation, Royal Alexandra Hospital, Edmonton, AB, Canada
| | - Georg M Schmölzer
- Neonatal Research Unit, Centre for the Studies of Asphyxia and Resuscitation, Royal Alexandra Hospital, Edmonton, AB, Canada.,Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
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18
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Kim JH, Lee SM, Lee YH. Risk factors for respiratory distress syndrome in full-term neonates. Yeungnam Univ J Med 2018; 35:187-191. [PMID: 31620592 PMCID: PMC6784699 DOI: 10.12701/yujm.2018.35.2.187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 10/29/2018] [Accepted: 10/30/2018] [Indexed: 12/27/2022] Open
Abstract
Background Respiratory distress syndrome (RDS) is a one of the most common cause of respiratory morbidity and mortality in neonates. This study was conducted to investigate the risk factors for RDS in full-term neonates. Methods We conducted this retrospective study using medical records. The study group included 80 full-term neonates diagnosed with RDS and hospitalized in the neonatal intensive care unit between January 2012 and December 2016, at Yeungnam University Hospital. We analyzed sex, gestational age, birth weight, delivery method, maternal age, number of pregnancy, history of abortion, and complication of pregnancy. The control group included 116 full-time neonates who were hospitalized with jaundice during the same period. Results The incidence of full-term RDS was more common in males (odds ratio [OR], 3.288; 95% confidence interval [CI], 1.446-7.479), cesarean section (OR, 15.03; 95% CI, 6.381-35.423), multiparity (OR, 4.216; 95% CI, 1.568-11.335). The other factors rendered no significant results. Conclusion The risk factors for RDS in full-tern neonates were identified as male sex, cesarean section, and multiparity. Further studies involving more institutions are needed to clarify the risk factors for RDS in full-term infants.
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Affiliation(s)
- Jin Hyeon Kim
- Department of Pediatrics, Yeungnam University College of Medicine, Daegu, Korea
| | - Sang Min Lee
- Department of Pediatrics, Yeungnam University College of Medicine, Daegu, Korea
| | - Young Hwan Lee
- Department of Pediatrics, Yeungnam University College of Medicine, Daegu, Korea
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19
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Wilson RD, Caughey AB, Wood SL, Macones GA, Wrench IJ, Huang J, Norman M, Pettersson K, Fawcett WJ, Shalabi MM, Metcalfe A, Gramlich L, Nelson G. Guidelines for Antenatal and Preoperative care in Cesarean Delivery: Enhanced Recovery After Surgery Society Recommendations (Part 1). Am J Obstet Gynecol 2018; 219:523.e1-523.e15. [PMID: 30240657 DOI: 10.1016/j.ajog.2018.09.015] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/13/2018] [Accepted: 09/10/2018] [Indexed: 01/09/2023]
Abstract
This Enhanced Recovery After Surgery (ERAS) Guideline for perioperative care in cesarean delivery will provide best practice, evidenced-based, recommendations for preoperative, intraoperative, and postoperative phases with, primarily, a maternal focus. The focused pathway process for scheduled and unscheduled cesarean delivery for this ERAS Cesarean Delivery Guideline will consider from the time from decision to operate (starting with the 30-60 minutes before skin incision) to hospital discharge. The literature search (1966-2017) used Embase and PubMed to search medical subject headings that included "Cesarean Section," "Cesarean Section," "Cesarean Section Delivery" and all pre- and intraoperative ERAS items. Study selection allowed titles and abstracts to be screened by individual reviewers to identify potentially relevant articles. Metaanalyses, systematic reviews, randomized controlled studies, nonrandomized controlled studies, reviews, and case series were considered for each individual topic. Quality assessment and data analyses that evaluated the quality of evidence and recommendations were evaluated according to the Grading of Recommendations, Assessment, Development and Evaluation system, as used and described in previous ERAS Guidelines. The ERAS Cesarean Delivery Guideline/Pathway has created a maternal focused pathway (for scheduled and unscheduled surgery starting from 30-60 minutes before skin incision to maternal discharge) with ERAS cesarean delivery consensus recommendations preoperative elements (anesthetic medications, fasting, carbohydrate supplementation, prophylactic antibiotics/skin preparation, ), intraoperative elements (anesthetic management, maternal hypothermia prevention, surgical technique, hysterotomy creation and closure, management of peritoneum, subcutaneous space, and skin closure), perioperative fluid management, and postoperative elements (chewing gum, management of nausea and vomiting, analgesia, timing of food intake, glucose management, antithrombotic prophylaxis, timing of ambulation, urinary management, and timing of maternal and neonate discharge). Limited topics for optimized care and for antenatal education and counselling and the immediate neonatal needs at delivery are discussed. Strong recommendations for element use were given for preoperative (antenatal education and counselling, use of antacids and histamine, H2 receptor antagonists, 2-hour fasting and small meal within 6 hours surgery, antimicrobial prophylaxis and skin preparation/chlorhexidine-alcohol), intraoperative (regional anesthesia, prevention of maternal hypothermia [forced warm air, warmed intravenous fluids, room temperature]), perioperative (fluid management for euvolemia and neonatal immediate care needs that include delayed cord clamping), and postoperative (fluid management to prevent nausea and vomiting, antiemetic use, analgesia with nonsteroidal antiinflammatory drugs/paracetamol, regular diet within 2 hours, tight capillary glucose control, pneumatic compression stocking for venous thromboembolism prophylaxis, immediate removal of urinary catheter). Recommendations against the element use were made for preoperative (maternal sedation, bowel preparation), intraoperative (neonatal oral suctioning or increased inspired oxygen), and postoperative (heparin should not be used routinely venous thromboembolism prophylaxis). Because these ERAS cesarean delivery pathway recommendations (elements/processes) are studied, implemented, audited, evaluated, and optimized by the maternity care teams, this will create an opportunity for the focused and optimized areas of care research with further enhanced care and recommendation.
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Ben-Shmuel A, Sheiner E, Wainstock T, Landau D, Vaknin F, Walfisch A. The association between gender and pediatric respiratory morbidity. Pediatr Pulmonol 2018; 53:1225-1230. [PMID: 29943901 DOI: 10.1002/ppul.24083] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 05/31/2018] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To evaluate the association between newborn gender and the risk for later pediatric respiratory morbidity. STUDY DESIGN A population based cohort analysis was performed by comparing the risk of long-term respiratory morbidity (until 18 years of age) according to gender. Respiratory morbidity included hospitalizations involving pneumonia, asthma, bronchitis, bronchiolitis, upper respiratory tract infection (URTI), influenza, and bronchiectasis. Deliveries occurred between the years 1991 and 2014 in a tertiary medical center. Kaplan-Meier survival curves were constructed to compare cumulative respiratory morbidity. A Cox proportional hazards model controlled for confounders. RESULTS During the study period 240 953 newborns met the inclusion criteria. Among them, 118 113 were females (49.0%) and 122 840 were males (51.0%). During the 18 years of follow-up, 13 719 (5.7%) different newborns were hospitalized with respiratory related morbidity. Males had significantly higher rates of respiratory morbidity as compared with females (6.4% vs 4.9% respectively, P < 0.001, OR 1.32, 95% CI 1.28-1.37). Specifically, pneumonia, bronchitis, asthma, bronchiolitis, and URTI were significantly more common in males. Males exhibited higher total cumulative respiratory morbidity (log rank P < 0.001), as well as higher cumulative morbidity in several sub-categories. These sub-categories included pneumonia, bronchitis, asthma, bronchiolitis, and URTI (P < 0.05 in all). The Cox regression model demonstrated male gender to be an independent risk factor for pediatric respiratory morbidity while adjusting for gestational age, birthweight, and other confounders (HR 1.29, 95% CI 1.25-1.34, P < 0.001). CONCLUSIONS Males are at an increased risk for pediatric respiratory morbidity, independent of obstetrical characteristics such as gestational age and birthweight.
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Affiliation(s)
- Atar Ben-Shmuel
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Eyal Sheiner
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Tamar Wainstock
- Faculty of Health Sciences, The Department of Public Health, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Daniella Landau
- Department of Pediatrics, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Flear Vaknin
- Medical School for International Health, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Asnat Walfisch
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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21
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Spillane NT, Zamudio S, Alvarez-Perez J, Andrews T, Nyirenda T, Alvarez M, Al-Khan A. Increased incidence of respiratory distress syndrome in neonates of mothers with abnormally invasive placentation. PLoS One 2018; 13:e0201266. [PMID: 30048504 PMCID: PMC6062082 DOI: 10.1371/journal.pone.0201266] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 07/11/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The incidence of abnormally invasive placentation (AIP) is increasing. Most of these pregnancies are delivered preterm. We sought to characterize neonatal outcomes in AIP pregnancies. METHODS In this retrospective case-control study (2006-2015), AIP neonates (n = 108) were matched to two controls each for gestational age, antenatal glucocorticoid exposure, sex, plurity, and delivery mode. Medical records were reviewed for neonatal and maternal characteristics/outcomes. Univariate and multivariate Poisson regressions were performed to determine relative risk ratios (RR). RESULTS There were no mortalities. All neonatal outcomes were similar except for respiratory distress syndrome (RDS), which affected 37% of AIP neonates (versus 21% of controls). AIP neonates required respiratory support (64.8% vs. 51.9%) and continuous positive airway pressure (53.7% vs. 42.1%) for a longer duration. Univariate regression yielded elevated RRs for RDS for AIP (RR 1.78, 95% CI 1.24-2.54), placenta previa (RR = 1.94, 95% CI 1.36-2.76), and placenta previa with bleeding (RR 2.29, 95% CI 1.36-3.86). One episode of bleeding had a RR of 2.43 (95% CI 1.57-3.76), 2 or more episodes had a RR of 2.95 (95% CI 1.96-4.44), and bleeding/abruption as the delivery indication had a RR of 2.57 (95% CI 1.82-3.64). A multivariate regression stratifying for AIP and evaluating the combined and individual associations of AIP, bleeding, placenta previa, and GA, resulted in elevated RRs for placenta previa alone (RR 2.16, 95% CI 1.15-4.06) and placenta previa and bleeding (RR 1.69, 95% CI 1.001-2.85). CONCLUSIONS The increased incidence of RDS at later gestational ages in AIP is driven by placenta previa. AIP neonates required respiratory support for a longer duration than age-matched controls. Providers should be prepared to counsel expectant parents and care for affected neonates.
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Affiliation(s)
- Nicole T. Spillane
- Department of Pediatrics, Division of Neonatology, Hackensack University Medical Center, Hackensack, New Jersey, United States of America
- Rutgers University, New Jersey Medical School, Newark, New Jersey, United States of America
- * E-mail:
| | - Stacy Zamudio
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine and Surgery, Center for Abnormal Placentation, Hackensack University Medical Center, Hackensack, New Jersey, United States of America
| | - Jesus Alvarez-Perez
- Rutgers University, New Jersey Medical School, Newark, New Jersey, United States of America
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine and Surgery, Center for Abnormal Placentation, Hackensack University Medical Center, Hackensack, New Jersey, United States of America
| | - Tracy Andrews
- Office of Research Administration, Department of Research Hackensack University Medical Center, Hackensack, New Jersey, United States of America
| | - Themba Nyirenda
- Office of Research Administration, Department of Research Hackensack University Medical Center, Hackensack, New Jersey, United States of America
| | - Manuel Alvarez
- Rutgers University, New Jersey Medical School, Newark, New Jersey, United States of America
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine and Surgery, Center for Abnormal Placentation, Hackensack University Medical Center, Hackensack, New Jersey, United States of America
| | - Abdulla Al-Khan
- Rutgers University, New Jersey Medical School, Newark, New Jersey, United States of America
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine and Surgery, Center for Abnormal Placentation, Hackensack University Medical Center, Hackensack, New Jersey, United States of America
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22
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Mrocki MM, Nguyen VB, Lombardo P, Sutherland MR, Bensley JG, Nitsos I, Allison BJ, Harding R, De Matteo R, Schneider M, Polglase GR, Black MJ. Moderate preterm birth affects right ventricular structure and function and pulmonary artery blood flow in adult sheep. J Physiol 2018; 596:5965-5975. [PMID: 29508407 DOI: 10.1113/jp275654] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 02/26/2018] [Indexed: 12/25/2022] Open
Abstract
KEY POINTS Preterm birth occurs when the heart muscle is immature and ill-prepared for the changes in heart and lung function at birth. MRI imaging studies show differences in the growth and function of the heart of young adults born preterm, with the effects more pronounced in the right ventricle. The findings of this study, conducted in sheep, showed that following moderate preterm birth the right ventricular wall was thinner in adulthood, with a reduction in the number and size of the heart muscle cells; in addition, there was impaired blood flow in the main artery leading from the right ventricle to the lungs. The findings indicate that being born only a few weeks early adversely affects the cellular structure of the right ventricle and blood flow to the lungs in adulthood. The reduced number of heart muscle cells has the potential to deleteriously affect right ventricular growth potential and function. ABSTRACT Preterm birth prematurely exposes the immature heart to the haemodynamic transition at birth, which has the potential to induce abnormal cardiac remodelling. Magnetic resonance imaging studies in young adults born preterm have shown abnormalities in the gross structure of the ventricles (particularly the right ventricle; RV), but the cellular basis of these alterations is unknown. The aim of this study, conducted in sheep, was to determine the effect of moderate preterm birth on RV cellular structure and function in early adulthood. Male singleton lambs were delivered moderately preterm (132 ± 1 days; n = 7) or at term (147 ± 1 days; n = 7). At 14.5 months of age, intra-arterial blood pressure and heart rate were measured. Pulmonary artery diameter and peak systolic blood flow were determined using ultrasound imaging, and RV stroke volume and output calculated. Cardiomyocyte number, size, nuclearity and levels of cardiac fibrosis were subsequently assessed in perfusion-fixed hearts using image analysis and stereological methods. Blood pressure (systolic, diastolic and mean), heart rate, levels of myocardial fibrosis and RV stroke volume and output were not different between groups. There was, however, a significant reduction in RV wall thickness in preterm sheep, and this was accompanied by a significant reduction in peak systolic blood flow in the pulmonary artery and in RV cardiomyocyte number. Cellular changes in the RV wall and reduced pulmonary artery blood flow following preterm birth have the potential to adversely affect cardiac and respiratory haemodynamics, especially when the cardiovascular system is physiologically or pathologically challenged.
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Affiliation(s)
- Marshall M Mrocki
- Biomedicine Discovery Institute and the Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Vivian B Nguyen
- Biomedicine Discovery Institute and the Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Paul Lombardo
- Department of Medical Imaging and Radiation Sciences, Monash University, Clayton, Victoria, Australia
| | - Megan R Sutherland
- Biomedicine Discovery Institute and the Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Jonathan G Bensley
- Biomedicine Discovery Institute and the Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Ilias Nitsos
- The Ritchie Centre, Hudson Institute of Medical Research, Monash University, Clayton, Victoria, Australia
| | - Beth J Allison
- The Ritchie Centre, Hudson Institute of Medical Research, Monash University, Clayton, Victoria, Australia
| | - Richard Harding
- Biomedicine Discovery Institute and the Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Robert De Matteo
- Biomedicine Discovery Institute and the Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Michal Schneider
- Department of Medical Imaging and Radiation Sciences, Monash University, Clayton, Victoria, Australia
| | - Graeme R Polglase
- The Ritchie Centre, Hudson Institute of Medical Research, Monash University, Clayton, Victoria, Australia.,Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia
| | - M Jane Black
- Biomedicine Discovery Institute and the Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
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23
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Chen C, Tian T, Liu L, Zhang J, Fu H. Gender-related efficacy of pulmonary surfactant in infants with respiratory distress syndrome: A STROBE compliant study. Medicine (Baltimore) 2018; 97:e0425. [PMID: 29702992 PMCID: PMC5944534 DOI: 10.1097/md.0000000000010425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Whether gender influences the efficacy of exogenous pulmonary surfactant (PS) for replacement therapy in newborns with respiratory distress syndrome (RDS) has not been well studied yet.Retrospective cohort study design. Data on PS therapy including blood gas, oxygenation function parameters, and therapy results were collected and analyzed from 370 infants diagnosed with RDS in 20 hospitals of the Northwest China Neonatal Collaboration from January 2011 to December 2011.Female infants were more sensitive to PS treatment than males. In multivariate analysis, when adjusted for other variables, an increased initial dose of surfactant significantly reduced mortality risk (OR = 0.98, 95%CI [0.96, 0.99], P = .002). An interaction between gender and initial dose of PS was observed. In male infants, an increased initial dose of surfactant was correlated with reduced mortality risk (OR = 0.97, 95%CI [0.96, 0.99], P = 0.005), while in female infants, we failed to found a relationship between the initial dose of surfactant and the risk of mortality (OR = 0.99, 95%CI [0.96, 1.02], P = .543). Moreover, the effect of surfactant replacement therapy was better for female infants than male infants at initial PS doses <130 mg/kg.Gender influences the efficacy of PS treatment. An increased initial dose of PS should be used in RDS therapy for male infants.
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Affiliation(s)
- Chen Chen
- Department of Neonatology, First Affiliated Hospital of Xi’an Jiaotong University
- Department of Neonatology, Xi’an Children's Hospital, Xi’an, China
| | - Tian Tian
- Department of Neonatology, First Affiliated Hospital of Xi’an Jiaotong University
| | - Li Liu
- Department of Neonatology, First Affiliated Hospital of Xi’an Jiaotong University
| | - Juan Zhang
- Department of Neonatology, First Affiliated Hospital of Xi’an Jiaotong University
| | - Huiling Fu
- Department of Neonatology, First Affiliated Hospital of Xi’an Jiaotong University
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24
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de Vries B, Narayan R, McGeechan K, Santiagu S, Vairavan R, Burke M, Phipps H, Hyett J. Is sonographically measured cervical length at 37 weeks of gestation associated with intrapartum cesarean section? A prospective cohort study. Acta Obstet Gynecol Scand 2018; 97:668-676. [DOI: 10.1111/aogs.13310] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 01/22/2018] [Indexed: 11/27/2022]
Affiliation(s)
- Bradley de Vries
- RPA Women and Babies; Royal Prince Alfred Hospital; Sydney New South Wales Australia
- Obstetrics, Gynecology and Neonatology; University of Sydney; Sydney New South Wales Australia
| | - Rajit Narayan
- RPA Women and Babies; Royal Prince Alfred Hospital; Sydney New South Wales Australia
| | - Kevin McGeechan
- School of Public Health; University of Sydney; Sydney New South Wales Australia
| | - Stanley Santiagu
- RPA Women and Babies; Royal Prince Alfred Hospital; Sydney New South Wales Australia
| | - Ramesh Vairavan
- Department of Maternal Fetal Medicine; Tengku Ampuan Rahimah Hospital; Klang Malaysia
| | - Minke Burke
- Royal Hospital for Women; Sydney New South Wales Australia
| | - Hala Phipps
- RPA Women and Babies; Royal Prince Alfred Hospital; Sydney New South Wales Australia
- Obstetrics, Gynecology and Neonatology; University of Sydney; Sydney New South Wales Australia
| | - Jon Hyett
- RPA Women and Babies; Royal Prince Alfred Hospital; Sydney New South Wales Australia
- Obstetrics, Gynecology and Neonatology; University of Sydney; Sydney New South Wales Australia
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25
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Le B, Sutherland MR, Black MJ. Maladaptive structural remodelling of the heart following preterm birth. CURRENT OPINION IN PHYSIOLOGY 2018. [DOI: 10.1016/j.cophys.2017.08.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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26
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Murphy GAV, Waters D, Ouma PO, Gathara D, Shepperd S, Snow RW, English M. Estimating the need for inpatient neonatal services: an iterative approach employing evidence and expert consensus to guide local policy in Kenya. BMJ Glob Health 2017; 2:e000472. [PMID: 29177099 PMCID: PMC5687539 DOI: 10.1136/bmjgh-2017-000472] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 09/14/2017] [Accepted: 09/15/2017] [Indexed: 12/12/2022] Open
Abstract
Universal access to quality newborn health services will be essential to meeting specific Sustainable Development Goals to reduce neonatal and overall child mortality. Data for decision making are crucial for planning services and monitoring progress in these endeavours. However, gaps in local population-level and facility-based data hinder estimation of health service requirements for effective planning in many low-income and middle-income settings. We worked with local policy makers and experts in Nairobi City County, an area with a population of four million and the highest neonatal mortality rate amongst counties in Kenya, to address this gap, and developed a systematic approach to use available data to support policy and planning. We developed a framework to identify major neonatal conditions likely to require inpatient neonatal care and identified estimates of incidence through literature review and expert consultation, to give an overall estimate for the year 2017 of the need for inpatient neonatal care, taking account of potential comorbidities. Our estimates suggest that almost 1 in 5 newborns (183/1000 live births) in Nairobi City County may need inpatient care, resulting in an estimated 24 161 newborns expected to require care in 2017. Our approach has been well received by local experts, who showed a willingness to work together and engage in the use of evidence in healthcare planning. The process highlighted the need for co-ordinated thinking on admission policy and referral care especially in a pluralistic provider environment helping build further appetite for data-informed decision making.
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Affiliation(s)
- Georgina A V Murphy
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK.,KEMRI - Wellcome Trust Research Programme, Nairobi, Kenya
| | - Donald Waters
- Oxford University Clinical Academic Graduate School, Medical Sciences Division, University of Oxford, Oxford, UK
| | - Paul O Ouma
- KEMRI - Wellcome Trust Research Programme, Nairobi, Kenya
| | - David Gathara
- KEMRI - Wellcome Trust Research Programme, Nairobi, Kenya
| | - Sasha Shepperd
- Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Robert W Snow
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK.,KEMRI - Wellcome Trust Research Programme, Nairobi, Kenya
| | - Mike English
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK.,KEMRI - Wellcome Trust Research Programme, Nairobi, Kenya
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27
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Norman M. Twin birth - planned vaginal delivery still standard of care. Acta Paediatr 2017; 106:1012. [PMID: 28133785 DOI: 10.1111/apa.13728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mikael Norman
- Department of Neonatal Medicine, K78; Karolinska Institutet & University Hospital; Stockholm Sweden
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28
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Townsel CD, Emmer SF, Campbell WA, Hussain N. Gender Differences in Respiratory Morbidity and Mortality of Preterm Neonates. Front Pediatr 2017; 5:6. [PMID: 28194395 PMCID: PMC5276811 DOI: 10.3389/fped.2017.00006] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 01/09/2017] [Indexed: 11/30/2022] Open
Abstract
For the past century, researchers have underscored the "disadvantage" observed in respiratory morbidity and mortality of male newborns. In this contemporary review, we examine gender differences in preterm infant respiratory morbidity and mortality specifically appraising differences in the very low birth weight (VLBW) population as well as the late preterm (LPT) population. In the era of postnatal surfactant and antenatal corticosteroids, the gender gap in neonatal outcomes has not narrowed. Structural, physiologic, and hormonal sex differences may be at the root of this disparity. Further exploration into the origin of gender differences in respiratory morbidity and neonatal mortality will shape future therapies. These therapies may need to be gender specific to close the gender gap.
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Affiliation(s)
| | - Sawyer F. Emmer
- Department of Obstetrics and Gynecology, University of Connecticut, Farmington, CT, USA
| | - Winston A. Campbell
- Department of Obstetrics and Gynecology, University of Connecticut, Farmington, CT, USA
| | - Naveed Hussain
- Department of Neonatology, Connecticut Children’s Medical Center, Farmington, CT, USA
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29
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Haase M, Laube M, Thome UH. Sex-specific effects of sex steroids on alveolar epithelial Na + transport. Am J Physiol Lung Cell Mol Physiol 2017; 312:L405-L414. [PMID: 28062481 DOI: 10.1152/ajplung.00275.2016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 12/16/2016] [Accepted: 12/29/2016] [Indexed: 01/10/2023] Open
Abstract
Alveolar fluid clearance mediates perinatal lung transition to air breathing in newborn infants, which is accomplished by epithelial Na+ channels (ENaC) and Na-K-ATPase. Male sex represents a major risk factor for developing respiratory distress, especially in preterm infants. We previously showed that male sex is associated with reduced epithelial Na+ transport, possibly contributing to the sexual dimorphism in newborn respiratory distress. This study aimed to determine sex-specific effects of sex steroids on epithelial Na+ transport. The effects of testosterone, 5α-dihydrotestosterone (DHT), estradiol, and progesterone on Na+ transport and Na+ channel expression were determined in fetal distal lung epithelial (FDLE) cells of male and female rat fetuses by Ussing chamber and mRNA expression analyses. DHT showed a minor effect only in male FDLE cells by decreasing epithelial Na+ transport. However, flutamide, an androgen receptor antagonist, did not abolish the gender imbalance, and testosterone lacked any effect on Na+ transport in male and female FDLE cells. In contrast, estradiol and progesterone increased Na+ transport and Na+ channel expression especially in females, and prevented the inhibiting effect of DHT in males. Estrogen receptor inhibition decreased Na+ channel expression and eliminated the sex differences. In conclusion, female sex steroids stimulate Na+ transport especially in females and prevent the inhibitory effect of DHT in males. The ineffectiveness of testosterone suggests that Na+ transport is largely unaffected by androgens. Thus, the higher responsiveness of female cells to female sex steroids explains the higher Na+ transport activity, possibly leading to a functional advantage in females.
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Affiliation(s)
- Melanie Haase
- Center for Pediatric Research Leipzig, Division of Neonatology, Hospital for Children & Adolescents, University of Leipzig, Leipzig, Germany
| | - Mandy Laube
- Center for Pediatric Research Leipzig, Division of Neonatology, Hospital for Children & Adolescents, University of Leipzig, Leipzig, Germany
| | - Ulrich H Thome
- Center for Pediatric Research Leipzig, Division of Neonatology, Hospital for Children & Adolescents, University of Leipzig, Leipzig, Germany
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30
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Sin SY, Jin MJ, Lee NH, Park JH, Kim CS, Lee SL. Lung Ultrasonography for the Diagnosis of Respiratory Distress Syndrome in Late Preterm Infants: Changing Incidence – A Single Center Experience. NEONATAL MEDICINE 2017. [DOI: 10.5385/nm.2017.24.1.13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Affiliation(s)
- So Young Sin
- Department of Pediatrics, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Min Ji Jin
- Department of Pediatrics, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Na Hyun Lee
- Department of Pediatrics, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Jae Hyun Park
- Department of Pediatrics, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Chun Soo Kim
- Department of Pediatrics, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Sang Lak Lee
- Department of Pediatrics, Keimyung University Dongsan Medical Center, Daegu, Korea
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31
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Yasuhi I, Myoga M, Suga S, Sugimi S, Umezaki Y, Fukuda M, Yamashita H, Kusuda N. Influence of the interval between antenatal corticosteroid therapy and delivery on respiratory distress syndrome. J Obstet Gynaecol Res 2016; 43:486-491. [DOI: 10.1111/jog.13242] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 10/21/2016] [Indexed: 11/26/2022]
Affiliation(s)
- Ichiro Yasuhi
- Department of Obstetrics & Gynecology; Nagasaki Medical Center; Omura Nagasaki Japan
| | - Mai Myoga
- Department of Obstetrics & Gynecology; School of Medicine, University of Occupational and Environmental Health; Fukuoka Japan
| | - Sachie Suga
- Department of Obstetrics & Gynecology; Nagasaki Medical Center; Omura Nagasaki Japan
| | - So Sugimi
- Department of Obstetrics & Gynecology; Nagasaki Medical Center; Omura Nagasaki Japan
| | - Yasushi Umezaki
- Department of Obstetrics & Gynecology; Nagasaki Medical Center; Omura Nagasaki Japan
| | - Masashi Fukuda
- Department of Obstetrics & Gynecology; Nagasaki Medical Center; Omura Nagasaki Japan
| | - Hiroshi Yamashita
- Department of Obstetrics & Gynecology; Nagasaki Medical Center; Omura Nagasaki Japan
| | - Nobuko Kusuda
- Department of Obstetrics & Gynecology; Nagasaki Medical Center; Omura Nagasaki Japan
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32
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Tsitoura MEI, Stavrou EF, Maraziotis IA, Sarafidis K, Athanassiadou A, Dimitriou G. Surfactant Protein A and B Gene Polymorphisms and Risk of Respiratory Distress Syndrome in Late-Preterm Neonates. PLoS One 2016; 11:e0166516. [PMID: 27835691 PMCID: PMC5106092 DOI: 10.1371/journal.pone.0166516] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 10/31/2016] [Indexed: 11/19/2022] Open
Abstract
Background and Objectives Newborns delivered late-preterm (between 340/7 and 366/7 weeks of gestation) are at increased risk of respiratory distress syndrome (RDS). Polymorphisms within the surfactant protein (SP) A and B gene have been shown to predispose to RDS in preterm neonates. The aim of this study was to investigate whether specific SP-A and/or SP-B genetic variants are also associated with RDS in infants born late-preterm. Methods This prospective cross-sectional study included 56 late-preterm infants with and 60 without RDS. Specific SP-A1/SP-A2 haplotypes and SP-B Ile131Thr polymorphic alleles were determined in blood specimens using polymerase-chain-reaction and DNA sequencing. Results The SP-A1 6A4 and the SP-A2 1A5 haplotypes were significantly overrepresented in newborns with RDS compared to controls (OR 2.86, 95%CI 1.20–6.83 and OR 4.68, 95%CI 1.28–17.1, respectively). The distribution of the SP-B Ile131Thr genotypes was similar between the two late-preterm groups. Overall, the SP-A1 6A4 or/and SP-A2 1A5 haplotype was present in 20 newborns with RDS (35.7%), resulting in a 4.2-fold (1.60–11.0) higher probability of RDS in carriers. Multivariable regression analysis revealed that the effect of SP-A1 6A4 and SP-A2 1A5 haplotypes was preserved when adjusting for known risk or protective factors, such as male gender, smaller gestational age, smaller weight, complications of pregnancy, and administration of antenatal corticosteroids. Conclusions Specific SP-A genetic variants may influence the susceptibility to RDS in late-preterm infants, independently of the effect of other perinatal factors.
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Affiliation(s)
- Maria-Eleni I. Tsitoura
- Neonatal Intensive Care Unit, Department of Pediatrics, Faculty of Medicine, University of Patras, Rio, Patras, Greece
- Department of General Biology, Faculty of Medicine, University of Patras, Rio, Patras, Greece
| | - Eleana F. Stavrou
- Department of General Biology, Faculty of Medicine, University of Patras, Rio, Patras, Greece
| | - Ioannis A. Maraziotis
- Neonatal Intensive Care Unit, Department of Pediatrics, Faculty of Medicine, University of Patras, Rio, Patras, Greece
| | - Kosmas Sarafidis
- First Department of Neonatology, Aristotle University of Thessaloniki, Ippokration General Hospital, Thessaloniki, Greece
| | - Aglaia Athanassiadou
- Department of General Biology, Faculty of Medicine, University of Patras, Rio, Patras, Greece
| | - Gabriel Dimitriou
- Neonatal Intensive Care Unit, Department of Pediatrics, Faculty of Medicine, University of Patras, Rio, Patras, Greece
- * E-mail:
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33
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Zhang L, Qiu Y, Yi B, Ni L, Zhang L, Taxi P, Li H, Zhang Q, Wang W, Liu Z, Li L, Zhao L, Wang H, Sun B. Mortality of neonatal respiratory failure from Chinese northwest NICU network. J Matern Fetal Neonatal Med 2016; 30:2105-2111. [PMID: 27651118 DOI: 10.1080/14767058.2016.1238894] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- L. Zhang
- Departments of Pediatrics and Neonatology, Children’s Hospital of Fudan University, Shanghai, PR China,
- Laboratory of Neonatal Medicine, National Commission of Health and Family Planning, Shanghai, PR China,
- Department of Neonatology, Northwest Women and Children Hospital/Maternity Hospital of Shaanxi Province, Xi’an, Shaanxi, PR China,
| | - Y. Qiu
- Department of Neonatology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, PR China,
| | - B. Yi
- Department of Neonatology, Women and Children’s Hospital of Gansu Province, Lanzhou, Gansu, PR China,
| | - L. Ni
- Department of Neonatology, Northwest Women and Children Hospital/Maternity Hospital of Shaanxi Province, Xi’an, Shaanxi, PR China,
| | - L Zhang
- Department of Neonatology, Women and Children’s Hospital of Qinghai Province, Xining, Qinghai, PR China,
| | - Pulati Taxi
- Department of Neonatology, Kashi First Hospital of Xinjiang Uygur Autonomous Region, Kashi, Xinjiang, PR China,
| | - H. Li
- Department of Neonatology, Maternal and Children Healthcare Hospital of Baoji City, Baoji, Shaanxi, PR China,
| | - Q. Zhang
- Department of Neonatology, People’s Hospital of Shaanxi Province, Xi’an, Shaanxi, PR China,
| | - W. Wang
- Department of Neonatology, Xi’an Municipal Children’s Hospital, Xi’an, Shaanxi, PR China,
| | - Z. Liu
- Department of Neonatology, Women and Children’s Hospital of Shanxi Province, Taiyuan, Shanxi, PR China,
| | - L. Li
- Department of Neonatology, People’s Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, PR China,
| | - L. Zhao
- Department of Neonatology, Women and Children’s Hospital of Yinchuan Municipality, Ningxia, PR China, and
| | - H. Wang
- Department of Neonatology, Women and Children’s Hospital of Inner Mongolia Autonomous Region, Hohhot, Inner Mongolia, PR China
| | - B. Sun
- Departments of Pediatrics and Neonatology, Children’s Hospital of Fudan University, Shanghai, PR China,
- Laboratory of Neonatal Medicine, National Commission of Health and Family Planning, Shanghai, PR China,
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34
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Mehrabadi A, Lisonkova S, Joseph KS. Heterogeneity of respiratory distress syndrome: risk factors and morbidity associated with early and late gestation disease. BMC Pregnancy Childbirth 2016; 16:281. [PMID: 27678336 PMCID: PMC5039795 DOI: 10.1186/s12884-016-1085-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 09/16/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Although respiratory distress syndrome (RDS) is considered a disease of prematurity, there is evidence to suggest heterogeneity between early and late gestation RDS. We examined the epidemiologic features of RDS occurring at early and late gestation. METHODS We conducted a retrospective cohort study including live births in the United States in 2005-06, with information obtained from the National Center for Health Statistics. Early (<32 weeks) and late gestation RDS (≥39 weeks) were contrasted in terms of risk factors and associations with pregnancy complications, obstetric intervention and co-morbidity. Logistic regression was used to quantify the effects of risk factors, while other associations were quantified descriptively. RESULTS There were 27,971 RDS cases, yielding an incidence of 6.4 per 1000 live births. Early and late gestation RDS differed in terms of risk factors, with factors such as multi-fetal gestation more strongly associated with early (adjusted odds ratio [aOR] 11.6, 95 % confidence interval 11.0-12.2) compared with late gestation RDS (aOR 3.66, 95 % confidence interval 2.68-4.98). The morbidity correlates of early and late gestation RDS also differed substantially; neonatal seizures were less strongly associated with early (OR 5.90, 95 % confidence interval 3.67-9.47) compared with late gestation RDS (OR 33.1, 95 % confidence interval 27.2-40.2), while meconium aspiration syndrome was not significantly associated with early gestation RDS (OR 1.87, 95 % confidence interval 0.94-3.72) and very strongly associated with late gestation RDS (OR 39.8, 95 % confidence interval 34.7-45.6). CONCLUSIONS Differences in risk factors and morbidity correlates of early and late gestation RDS suggest that these entities represent two distinct diseases.
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Affiliation(s)
- Azar Mehrabadi
- Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital and Health Centre of British Columbia, Vancouver, BC, Canada. .,Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Purvis Hall, 1020 Pine Ave. West, Montreal, QC, H3A 1A2, Canada.
| | - Sarka Lisonkova
- Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital and Health Centre of British Columbia, Vancouver, BC, Canada
| | - K S Joseph
- Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital and Health Centre of British Columbia, Vancouver, BC, Canada.,School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada
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35
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Schmalisch G. Current methodological and technical limitations of time and volumetric capnography in newborns. Biomed Eng Online 2016; 15:104. [PMID: 27576441 PMCID: PMC5004292 DOI: 10.1186/s12938-016-0228-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 08/23/2016] [Indexed: 02/07/2023] Open
Abstract
Although capnography is a standard tool in mechanically ventilated adult and pediatric patients, it has physiological and technical limitations in neonates. Gas exchange differs between small and adult lungs due to the greater impact of small airways on gas exchange, the higher impact of the apparatus dead space on measurements due to lower tidal volume and the occurrence of air leaks in intubated patients. The high respiratory rate and low tidal volume in newborns, especially those with stiff lungs, require main-stream sensors with fast response times and minimal dead-space or low suction flow when using side-stream measurements. If these technical requirements are not fulfilled, the measured end-tidal CO2 (P et CO 2 ), which should reflect the alveolar CO2 and the calculated airway dead spaces, can be misleading. The aim of this survey is to highlight the current limitations of capnography in very young patients to avoid pitfalls associated with the interpretation of capnographic parameters, and to describe further developments.
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Affiliation(s)
- Gerd Schmalisch
- Department of Neonatology, Charité University Medical Center, Charitéplatz 1, 10117, Berlin, Germany.
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Rizzo LC, Fischer GB, Maróstica PJC, Mocelin HT. Profile of cystic fibrosis in two reference centers in southern Brazil. Rev Assoc Med Bras (1992) 2016; 61:150-5. [PMID: 26107365 DOI: 10.1590/1806-9282.61.02.150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 08/15/2014] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE to compare the characteristics of cystic fibrosis patients treated in two reference centers in southern Brazil in order to observe trends in the treatment and clinical outcomes that may produce changes in clinical conduct. METHODS cross-sectional, retrospective study with 83 patients diagnosed with cystic fibrosis, aged one month to eighteen years. The variables analyzed were obtained through review of medical records, including: demographic and clinical characteristics, socioeconomic status, pulmonary function test, bacterial colonization profile, medication and physiotherapy. RESULTS between the two centers there was significant difference in the variables, including admissions in the previous year (p<0.001), lifetime hospital admissions (p<0.001), use of Dornase alpha (p=0.003) and inhaled antibiotic therapy (p=0.006), which were higher at the Santo Antônio Children's Hospital (HCSA), while age at first colonization with Staphylococcus aureus (p=0.008), maternal age (p=0.030), clinical score (p=0.001), socioeconomic score (p=0.021) and use of hypertonic saline (p<0.001) were lower at HCSA compared to São Lucas Hospital (HSL). CONCLUSION the study centers seem to receive a different population of patients, both in socioeconomic terms, as well as disease severity, which interferes with the choice of medication treatment. At the HCSA, preventive actions against infection due to the high incidence of Burkholderia cepacia Complex and careful research into early lung changes will be encouraged.
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Respiratory adaptation and surfactant composition of unanesthetized male and female lambs differ for up to 8 h after preterm birth. Pediatr Res 2016; 79:13-21. [PMID: 26372515 DOI: 10.1038/pr.2015.175] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 07/01/2015] [Indexed: 12/31/2022]
Abstract
BACKGROUND Male preterm infants are more likely to experience respiratory distress syndrome than females. Our objectives were to determine if sex-related differences in physiological adaptation after preterm birth increase with time after birth and if the use of continuous positive airway pressure (CPAP) reduces these differences. METHODS Unanesthetized lambs (9F, 8M) were delivered at 0.90 of term. Blood gases, metabolites, and cardiovascular and respiratory parameters were monitored in spontaneously breathing lambs for 8 h. Supplemental oxygen was administered via a face mask at 4 cmH2O CPAP. At 8 h, lung compliance was determined, and bronchoalveolar lavage fluid (BALF) was analyzed for total protein and surfactant phospholipids. Surfactant protein (SP) gene expression and protein expression of SP-A and pro-SP-C were determined in lung tissue. RESULTS For 8 h after delivery, males had significantly lower arterial pH and higher Paco2, and a greater percentage of males were dependent on supplemental oxygen than females. Inspiratory effort was greater and lung compliance was lower in male lambs. Total protein concentration in BALF, SP gene expression, and SP-A protein levels were not different between sexes; pro-SP-C was 24% lower in males. CONCLUSION The use of CPAP did not eliminate the male disadvantage, which continues for up to 8 h after preterm birth.
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Kaltofen T, Haase M, Thome UH, Laube M. Male Sex is Associated with a Reduced Alveolar Epithelial Sodium Transport. PLoS One 2015; 10:e0136178. [PMID: 26291531 PMCID: PMC4546327 DOI: 10.1371/journal.pone.0136178] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 07/31/2015] [Indexed: 01/01/2023] Open
Abstract
Respiratory distress syndrome (RDS) is the most frequent pulmonary complication in preterm infants. RDS incidence differs between genders, which has been called the male disadvantage. Besides maturation of the surfactant system, Na+ transport driven alveolar fluid clearance is crucial for the prevention of RDS. Na+ transport is mediated by the epithelial Na+ channel (ENaC) and the Na,K-ATPase, therefore potential differences in their expression or activity possibly contribute to the gender imbalance observed in RDS. Fetal distal lung epithelial (FDLE) cells of rat fetuses were separated by sex and analyzed regarding expression and activity of the Na+ transporters. Ussing chamber experiments showed a higher baseline short-circuit current (ISC) and amiloride-sensitive ΔISC in FDLE cells of female origin. In addition, maximal amiloride-sensitive ΔISC and maximal ouabain-sensitive ΔISC of female cells were higher when measured in the presence of a permeabilized basolateral or apical membrane, respectively. The number of FDLE cells per fetus recoverable during cell isolation was also significantly higher in females. In addition, lung wet-to-dry weight ratio was lower in fetal and newborn female pups. Female derived FDLE cells had higher mRNA levels of the ENaC- and Na,K-ATPase subunits. Furthermore, estrogen (ER) and progesterone receptor (PR) mRNA levels were higher in female cells, which might render female cells more responsive, while concentrations of placenta-derived sex steroids do not differ between both genders during fetal life. Inhibition of ER-β abolished the sex differences in Na+ transport and female cells were more responsive to estradiol stimulation. In conclusion, a higher alveolar Na+ transport, possibly attributable to a higher expression of hormone receptors in female FDLE cells, provides an explanation for the well known sex-related difference in RDS occurrence and outcome.
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Affiliation(s)
- Till Kaltofen
- Center for Pediatric Research Leipzig, Division of Neonatology, Hospital for Children & Adolescents, University of Leipzig, Leipzig, Germany
| | - Melanie Haase
- Center for Pediatric Research Leipzig, Division of Neonatology, Hospital for Children & Adolescents, University of Leipzig, Leipzig, Germany
| | - Ulrich H. Thome
- Center for Pediatric Research Leipzig, Division of Neonatology, Hospital for Children & Adolescents, University of Leipzig, Leipzig, Germany
| | - Mandy Laube
- Center for Pediatric Research Leipzig, Division of Neonatology, Hospital for Children & Adolescents, University of Leipzig, Leipzig, Germany
- * E-mail:
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Lykkedegn S, Sorensen GL, Beck-Nielsen SS, Christesen HT. The impact of vitamin D on fetal and neonatal lung maturation. A systematic review. Am J Physiol Lung Cell Mol Physiol 2015; 308:L587-602. [PMID: 25595644 DOI: 10.1152/ajplung.00117.2014] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 01/12/2015] [Indexed: 01/22/2023] Open
Abstract
Respiratory distress syndrome (RDS) and bronchopulmonary dysplasia (BPD) are major complications to preterm birth. Hypovitaminosis D is prevalent in pregnancy. We systematically reviewed the evidence of the impact of vitamin D on lung development, surfactant synthesis, RDS, and BPD searching PubMed, Embase, and Cochrane databases with the terms vitamin D AND (surfactant OR lung maturation OR lung development OR respiratory distress syndrome OR fetal lung OR prematurity OR bronchopulmonary dysplasia). Three human studies, ten animal studies, two laboratory studies, and one combined animal and laboratory study were included. Human evidence was sparse, allowing no conclusions. BPD was not associated with vitamin D receptor polymorphism in a fully adjusted analysis. Animal and laboratory studies showed substantial positive effects of vitamin D on the alveolar type II cell, fibroblast proliferation, surfactant synthesis, and alveolarization. These data support the hypothesis of hypovitaminosis D as a frequent, modifiable risk factor of RDS and BPD, which should be tested in randomized controlled trials on pregnant women, those with threatening preterm delivery, or in the preterm neonates. Future experimental and human studies should aim to identify optimal time windows, vitamin D doses, and cut-off levels for 25-hydroxyvitamin D in interventions against RDS, BPD, and later adverse respiratory outcomes.
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Affiliation(s)
- Sine Lykkedegn
- Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark; Clinical Institute, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - Grith Lykke Sorensen
- Institute of Molecular Medicine, Department of Cardiovascular and Renal Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - Signe Sparre Beck-Nielsen
- Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark; Clinical Institute, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - Henrik Thybo Christesen
- Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark; Clinical Institute, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark;
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Steen EE, Källén K, Maršál K, Norman M, Hellström-Westas L. Impact of sex on perinatal mortality and morbidity in twins. J Perinat Med 2014; 42:225-31. [PMID: 24222256 DOI: 10.1515/jpm-2013-0147] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 10/08/2013] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Twin studies offer opportunities to investigate mechanisms underlying sex-associated differences in perinatal outcomes. The objective of the study was to investigate sex-related differences in perinatal complications. STUDY DESIGN A cohort of 16,045 twin pregnancies - 32,090 twins - was explored for obstetric complications, perinatal and infant mortality, and neonatal morbidities. RESULTS Twin pregnancies with a female fetus had an increased risk for preeclampsia, but otherwise there were no pregnancy complications associated with fetal sex. After birth, female-female twins had lower early neonatal and infant mortality, and lower risk for respiratory morbidities than male-male twins at all gestational ages. In unlike-sexed twin pairs, very preterm males had higher respiratory morbidity than females and, females were at higher risk for being growth restricted. CONCLUSION Male-male twins have higher respiratory morbidity and neonatal mortality than female-female twins. In unliked-sexed twin pairs, the males seem to be protected by having a female co-twin.
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Ishak N, Sozo F, Harding R, De Matteo R. Does lung development differ in male and female fetuses? Exp Lung Res 2013; 40:30-9. [PMID: 24354441 DOI: 10.3109/01902148.2013.858197] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Preterm male infants have a higher incidence of morbidity and mortality due to respiratory insufficiency than females of the same gestational age. This male disadvantage could be due to differences in lung architecture; however, few studies have compared lung architecture in male and female fetuses during late gestation. Our principal objectives were to compare the morphology of the fetal lung and the maturity of the surfactant system in preterm male and female fetuses. Lungs from male (n = 9) and female (n = 11) fetal sheep were collected at 0.9 of term (131 days of the 145-day gestation) for morphological and molecular analyses. In separate groups, tracheal liquid was obtained from male (n = 9) and female (n = 9) fetuses at 0.9 of term for determination of surfactant phospholipid composition. We found no sex-related differences in body weight, lung weight, right lung volume, lung tissue and airspace fractions, mean linear intercept, septal crest density, septal thickness, the proportion of proliferating and apoptotic cells, and the percentages of collagen or elastin. The gene expression of surfactant protein -A, -B, -C, and -D and tropoelastin was similar between sexes. There were no differences in the proportion of the major phospholipid classes in the tracheal liquid between sexes; however there was a significantly higher percentage of the phospholipid species phosphatidylinositol 38:5 in males. The greater morbidity and mortality in preterm male lambs do not appear to be related to differences in lung structure or surfactant phospholipid synthesis before birth, but may relate to physiological adaptation to air-breathing at birth.
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Affiliation(s)
- Noreen Ishak
- Department of Anatomy & Developmental Biology, Monash University, Melbourne, Australia
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