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Ilves N, Metsvaht T, Laugesaar R, Rull K, Lintrop M, Laan M, Loorits D, Kool P, Ilves P. Periventricular hemorrhagic infarction in preterm neonates: Etiology and time of development. J Neonatal Perinatal Med 2024; 17:111-121. [PMID: 38189714 DOI: 10.3233/npm-230033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
BACKGROUND To find the obstetrical and delivery associated risk factors of antenatal and postnatal grade III intraventricular hemorrhage (IVH) or periventricular hemorrhagic infarction (PVHI) in preterm neonates. METHODS A retrospective study of obstetric and delivery associated risk factors included neonates (<35 gestational weeks) with severe IVH/PVHI (n = 120) and a prospectively collected control group (n = 50). The children were divided into: (1) antenatal onset group (n = 27) with insult visible on cerebral ultrasonography within the first 12 hours of birth or periventricular cystic changes visible in PVHI within the first 3 days; (2) neonatal onset group (n = 70) with insult diagnosed after initial normal findings or I-II grade IVH, and (3) unknown time-onset group (n = 23) with insult visible at > 12 h of age. RESULTS The mothers of the antenatal onset group had significantly more bacterial infections before delivery compared to the neonatal onset group: 20/27 (74.1%) versus 23/69 (33.3%), (odds ratio (OR) 5.7 [95% confidence interval 2.1-16]; p = 0.0008) or compared to the control group (11/50 (22%); OR 11 [2.8-42]; p = 0.0005). Placental histology revealed chorioamnionitis more often in the antenatal compared to the neonatal onset group (14/21 (66.7%) versus 16/42 (38.1%), respectively; OR 3.7 [1.18-11]; p = 0.025). Neonates with neonatal development of severe IVH/PVHI had significantly more complications during delivery or intensive care. CONCLUSIONS Bacterial infection during pregnancy is an important risk factor for development of antenatal onset severe IVH or PVHI. In neonates born to mothers with severe bacterial infection during pregnancy, cerebral ultrasonography is indicated for early detection of severe IVH or PVHI.
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Affiliation(s)
- N Ilves
- Radiology Clinic of Tartu University Hospital, Tartu, Estonia
- Department of Radiology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - T Metsvaht
- Anesthesiology and Intensive Care Clinic of Tartu University Hospital, Tartu, Estonia
- Department of Pediatrics, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - R Laugesaar
- Children's Clinic of Tartu University Hospital, Tartu, Estonia
- Department of Pediatrics, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - K Rull
- Women's Clinic of Tartu University Hospital, Tartu, Estonia
- Department of Gynecology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - M Lintrop
- Radiology Clinic of Tartu University Hospital, Tartu, Estonia
- Department of Radiology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - M Laan
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - D Loorits
- Radiology Clinic of Tartu University Hospital, Tartu, Estonia
| | - P Kool
- Department of Radiology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - P Ilves
- Radiology Clinic of Tartu University Hospital, Tartu, Estonia
- Department of Radiology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
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Kumar P, Polavarapu M. A simple scoring system for prediction of IVH in very-low-birth-weight infants. Pediatr Res 2023; 94:2033-2039. [PMID: 37479747 DOI: 10.1038/s41390-023-02744-6] [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] [Received: 01/26/2023] [Revised: 06/30/2023] [Accepted: 07/03/2023] [Indexed: 07/23/2023]
Abstract
BACKGROUND To develop a simple scoring system to predict either any or severe IVH in VLBW infants. METHODS In this retrospective cohort study, 923 VLBW infants were randomly divided into derivation (n = 431) and validation (n = 492) cohorts. After stepwise multivariable logistic regression analyses, a risk score was assigned to independent predictors. RESULTS The overall rates of any and severe IVH were 22.9% and 9.9%. Gestational age, maternal race, location of birth and sex were independent predictors of any IVH (AUC 0.75 in derivation cohort and 0.69 for validation cohort). Birth weight, Apgar score at 1 minute, location of birth and sex were independent predictors of severe IVH (AUC 0.84 in derivation cohort and 0.77 for validation cohort). For any IVH, infants in the high-risk category (total score 4 or 5) had > 50% likelihood of any IVH with a negative predictive value of 82.6%. For severe IVH, the total risk score ranged from 0-8, and infants in high-risk category (total score 6-8) had 30% likelihood of severe IVH with a negative predictive value of 94.9%. CONCLUSION We report an easy to calculate, validated scoring system with a high NPV to identify VLBW infants at highest risk of IVH. IMPACT We report a simple validated scoring system with a high NPV for prediction of IVH in VLBW infants. The variables in the proposed model are available at birth and unlikely to be influenced by provider bias. This scoring system can identify infants at risk of any and severe IVH, while most previous models predict only severe IVH. This scoring system does not require access to web-based resources. This scoring system can help in employing prevention strategies only for infants at highest risk of IVH and thus eliminate the risks of interventions in a large majority of VLBW infants.
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Affiliation(s)
- Praveen Kumar
- Pediatrics, University of Illinois College of Medicine at Peoria, Peoria, IL, USA.
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3
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Arkin N, Wang Y, Wang L. Establishment and evaluation of nomogram for predicting intraventricular hemorrhage in neonatal acute respiratory distress syndrome. BMC Pediatr 2023; 23:47. [PMID: 36707776 PMCID: PMC9883912 DOI: 10.1186/s12887-023-03853-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/18/2023] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Intraventricular hemorrhage (IVH) is the most common type of brain injury in newborns, especially in newborns with Neonatal acute respiratory distress syndrome (ARDS). IVH can cause brain parenchyma damage and long-term neurological sequelae in children. Early identification and prevention of sequelae are essential. This study aims to establish a predictive nomogram for the early prediction of IVH in newborns with ARDS. METHODS From 2019 to 2021, we collected data from 222 infants diagnosed with ARDS in the Department of Neonatology, First Affiliated Hospital of Xinjiang Medical University. Infants have been randomly assigned to the training set (n = 161) or the validation set (n = 61) at a ratio of 7:3. Variables were screened using the Least Absolute Contract and Selection Operator (LASSO) regression to create a risk model for IVH in infants with ARDS. The variables chosen in the LASSO regression model were used to establish the prediction model using multivariate logistic regression analysis. RESULTS We recognized 4 variables as independent risk factors for IVH in newborns with ARDS via LASSO analysis, consisting of premature rupture of membranes (PROM), pulmonary surfactant (PS) dosage, PH1 and Arterial partial pressure of oxygen (PaO21). The C-Index for this dataset is 0.868 (95% CI: 0.837-0.940) and the C index in bootstrap verification is 0.852 respectively. The analysis of the decision curve shows that the model can significantly improve clinical efficiency in predicting IVH. We also provide a website based on the model and open it to users for free, so that the model can be better applied to clinical practice. CONCLUSION In conclusion, the nomogram based on 4 factors shows good identification, calibration and clinical practicability. Our nomographs can help clinicians make clinical decisions, screen high-risk ARDS newborns, and facilitate early identification and management of IVH patients.
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Affiliation(s)
- Nurbiya Arkin
- grid.412631.3Department of Neonatology, The First Affiliated Hospital of Xinjiang Medical University, 830054 Urumqi, Xinjiang China
| | - Yanmei Wang
- grid.412631.3Department of Neonatology, The First Affiliated Hospital of Xinjiang Medical University, 830054 Urumqi, Xinjiang China
| | - Le Wang
- grid.412631.3Department of Neonatology, The First Affiliated Hospital of Xinjiang Medical University, 830054 Urumqi, Xinjiang China
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Chawla S, Natarajan G, Laptook AR, Chowdhury D, Bell EF, Ambalavanan N, Carlo WA, Gantz M, Das A, Tapia JL, Harmon HM, Shankaran S. Model for severe intracranial hemorrhage and role of early indomethacin in extreme preterm infants. Pediatr Res 2022; 92:1648-1656. [PMID: 35301420 PMCID: PMC9481746 DOI: 10.1038/s41390-022-02012-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 01/18/2022] [Accepted: 02/08/2022] [Indexed: 01/13/2023]
Abstract
BACKGROUND To develop a model for prediction of severe intracranial hemorrhage (ICH) or death based on variables from the first 12 h of age and to compare mortality and morbidities with and without exposure to early indomethacin. METHODS This retrospective cohort study included extreme preterm (220/7-266/7 weeks) infants born at National Institute of Child Health and Human Development Neonatal Research Network sites. Primary outcome was a composite of severe ICH and/or death. RESULTS Of 4624 infants, 1827 received early indomethacin. Lower gestation, lack of antenatal steroids exposure, lower 1-min Apgar, male sex, and receipt of epinephrine were associated with severe ICH or death. Early indomethacin was associated with a lower risk of patent ductus arteriosus, bronchopulmonary dysplasia, and higher risk of spontaneous intestinal perforation. CONCLUSIONS A model for early prediction of severe ICH/death was developed and validated. Early indomethacin was associated with a lower risk of patent ductus arteriosus and bronchopulmonary dysplasia and a higher risk of spontaneous intestinal perforation. CLINICAL TRIAL REGISTRATION Not applicable. IMPACT Modern data on severe ICH and neonatal morbidities in relation to prophylactic indomethacin are scarce in the published literature. Prophylactic indomethacin was associated with a lower risk of patent ductus arteriosus and bronchopulmonary dysplasia and a higher risk of intestinal perforation. A risk estimator for severe intracranial hemorrhage/death was developed in a large cohort of extremely preterm infants. The risk estimator developed based on a large cohort of patients provides an estimate of severe intracranial bleeding for an individual infant.
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Affiliation(s)
- Sanjay Chawla
- Department of Pediatrics, Wayne State University, Detroit, MI, USA.
- Central Michigan University, Wayne State University, Children's Hospital of Michigan, Detroit, MI, USA.
| | - Girija Natarajan
- Department of Pediatrics, Wayne State University, Detroit, MI, USA
- Central Michigan University, Wayne State University, Children's Hospital of Michigan, Detroit, MI, USA
| | - Abbot R Laptook
- Department of Pediatrics, Women & Infants Hospital, Brown University, Providence, RI, USA
| | - Dhuly Chowdhury
- Social, Statistical and Environmental Sciences Unit, RTI International, Research Triangle Park, NC, USA
| | - Edward F Bell
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | | | - Waldemar A Carlo
- Division of Neonatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Marie Gantz
- Social, Statistical and Environmental Sciences Unit, RTI International, Research Triangle Park, NC, USA
| | - Abhik Das
- Social, Statistical and Environmental Sciences Unit, RTI International, Rockville, MD, USA
| | - Jose L Tapia
- Departamento de Neonatologia, Facultad de Medicina, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Heidi M Harmon
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Seetha Shankaran
- Department of Pediatrics, Wayne State University, Detroit, MI, USA
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5
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Pineles BL, Mendez-Figueroa H, Chauhan SP. Diagnosis of fetal growth restriction in a cohort of small-for-gestational-age neonates at term: neonatal and maternal outcomes. Am J Obstet Gynecol MFM 2022; 4:100672. [PMID: 35667554 DOI: 10.1016/j.ajogmf.2022.100672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 05/20/2022] [Accepted: 05/30/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Small-for-gestational-age neonates (birthweight of <10th percentile for gestational age) are significantly more likely to have multiple adverse outcomes than appropriate-for-gestational-age neonates (birthweight of 10th-90th percentile). Most small-for-gestational-age neonates are undetected during pregnancy (ie, not diagnosed as fetal growth restriction), but the sequela of being undetected remains uncertain. OBJECTIVE The primary objective of this study was to compare the composite neonatal adverse outcomes among singleton pregnancies that were at least 37 weeks and delivered small-for-gestational-age neonates, which were diagnosed as either fetal growth restriction during pregnancy (detected small for gestational age) or not (undetected small for gestational age). STUDY DESIGN This was a secondary analysis of a retrospective cohort, the Consortium for Safe Labor. Singleton births at 37.0 to 41.6 weeks of gestation without congenital anomalies born small for gestational age were included in the analysis. The primary outcome was the rate of composite neonatal adverse outcome, defined as any of the following: Apgar score of <5 at 5 minutes, cardiopulmonary resuscitation at birth, respiratory distress syndrome, continuous positive airway pressure, mechanical ventilation, neonatal seizures, hypoxic-ischemic encephalopathy or diagnosis of asphyxia, intraventricular hemorrhage, necrotizing enterocolitis, neonatal sepsis, or fetal or neonatal death. The secondary outcome was the rate of composite maternal adverse outcome, which included any of the following: postpartum hemorrhage, peripartum infection, thromboembolism, hysterectomy, uterine rupture, eclampsia, intensive care unit admission, or maternal death. Small for gestational age with a prenatal diagnosis of fetal growth restriction (detected small for gestational age) was compared with small for gestational age without a prenatal diagnosis of fetal growth restriction (undetected small for gestational age). Multivariate logistic regression models were used to compare groups. A P value of <.05 was considered statistically significant. Gestational age-specific risks of composite neonatal adverse outcome and perinatal death were computed for each week of gestation among ongoing pregnancies. RESULTS Of the 228,438 deliveries in the Consortium for Safe Labor, 18,607 (8.1%) met the inclusion criteria. Among these deliveries, 17,689 (95.0%) were undetected small for gestational age, and 918 (5.0%) were detected small for gestational age. The overall rate of composite neonatal adverse outcome was 3.0%. Moreover, the rate of composite neonatal adverse outcome was similar between undetected small for gestational age and detected small for gestational age (3.0% vs 3.9%, respectively; adjusted odds ratio, 1.33; 95% confidence interval, 0.88-2.00). Some components of the composite-respiratory distress syndrome, mechanical ventilation, and necrotizing enterocolitis-were significantly higher among undetected small for gestational age than among detected small for gestational age. The overall rate of composite maternal adverse outcome was 6.2%. The rate of composite maternal adverse outcome between undetected small for gestational age and detected small for gestational age (6.2% vs 5.1%, respectively; adjusted odds ratio, 0.84; 95% confidence interval, 0.60-1.18) was similar. In gestational age-specific comparisons of composite neonatal adverse outcome, no difference was found between the undetected small-for-gestational-age group and the detected small-for-gestational-age group except for in pregnancies >41 weeks. In pregnancies at 41.0 to 41.6 weeks, the rate of composite neonatal adverse outcome was significantly greater in detected small for gestational age than in undetected small for gestational age (10.0% vs 2.5%, respectively; P=.035). CONCLUSION Antenatal detection of small for gestational age was not associated with improved composite neonatal adverse outcomes, although some components of morbidity improved with detection. Maternal outcomes did not differ between detected small for gestational age and undetected small for gestational age.
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Affiliation(s)
- Beth L Pineles
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX.
| | - Hector Mendez-Figueroa
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX
| | - Suneet P Chauhan
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX
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6
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Abiramalatha T, Bandyopadhyay T, Ramaswamy VV, Shaik NB, Thanigainathan S, Pullattayil AK, Amboiram P. Risk Factors for Periventricular Leukomalacia in Preterm Infants: A Systematic Review, Meta-analysis, and GRADE-Based Assessment of Certainty of Evidence. Pediatr Neurol 2021; 124:51-71. [PMID: 34537463 DOI: 10.1016/j.pediatrneurol.2021.08.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/20/2021] [Accepted: 08/12/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND We analyzed the certainty of evidence (CoE) for risk factors of periventricular leukomalacia (PVL) in preterm neonates, a common morbidity of prematurity. METHODS Medline, CENTRAL, Embase, and CINAHL were searched. Cohort and case-control studies and randomised randomized controlled trials were included. Data extraction was performed in duplicate. A random random-effects meta-analysis was utilizedused. CoE was evaluated as per Grading of Recommendations Assessment, Development and Evaluation (GRADE) guidelines. RESULTS One hundred eighty-six studies evaluating 95 risk factors for PVL were included. Of the 2,509,507 neonates assessed, 16,569 were diagnosed with PVL. Intraventricular hemorrhage [adjusted odds ratio: 3.22 (2.52-4.12)] had moderate CoE for its association with PVL. Other factors such as hypocarbia, chorioamnionitis, PPROM >48 hour, multifetal pregnancy reduction, antenatal indomethacin, lack of antenatal steroids, perinatal asphyxia, ventilation, shock/hypotension, patent ductus arteriosus requiring surgical ligation, late-onset circulatory collapse, sepsis, necrotizing enterocolitis, and neonatal surgery showed significant association with PVL after adjustment for confounders (CoE: very low to low). Amongst the risk factors associated with mother placental fetal (MPF) triad, there was paucity of literature related to genetic predisposition and defective placentation. Sensitivity analysis revealed that the strength of association between invasive ventilation and PVL decreased over time (P < 0.01), suggesting progress in ventilation strategies. Limited studies had evaluated diffuse PVL. CONCLUSION Despite decades of research, our findings indicate that the CoE is low to very low for most of the commonly attributed risk factors of PVL. Future studies should evaluate genetic predisposition and defective placentation in the MPF triad contributing to PVL. Studies evaluating exclusively diffuse PVL are warranted.
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Affiliation(s)
- Thangaraj Abiramalatha
- Department of Neonatology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Tapas Bandyopadhyay
- Department of Neonatology, Dr Ram Manohar Lohia Hospital & Post Graduate Institute of Medical Education and Research, New Delhi, India
| | | | - Nasreen Banu Shaik
- Department of Neonatology, Ankura Hospital for Women and Children, Hyderabad, India
| | - Sivam Thanigainathan
- Department of Neonatology, All India Institute of Medical Sciences, Jodhpur, India
| | | | - Prakash Amboiram
- Department of Neonatology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
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Chawla S, Chock VY, Lakshminrusimha S. Intraventricular hemorrhage and white matter injury: is persistent cerebral desaturation a missing link? Pediatr Res 2021; 89:727-729. [PMID: 33247218 DOI: 10.1038/s41390-020-01294-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 10/29/2020] [Accepted: 11/03/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Sanjay Chawla
- Central Michigan University, Children's Hospital of Michigan, 3901 Beaubien, Detroit, MI, 48201, USA.
| | - Valerie Y Chock
- Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, 750 Welch Road, Suite 315, Palo Alto, CA, 94304, USA
| | - Satyan Lakshminrusimha
- Department of Pediatrics-Neonatology, University of California Davis, 2516 Stockton Blvd, Sacramento, CA, 95817, USA
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MacLeod R, Paulson JN, Okalany N, Okello F, Acom L, Ikiror J, Cowan FM, Tann CJ, Dyet LE, Hagmann CF, Burgoine K. Intraventricular haemorrhage in a Ugandan cohort of low birth weight neonates: the IVHU study. BMC Pediatr 2021; 21:12. [PMID: 33407279 PMCID: PMC7786968 DOI: 10.1186/s12887-020-02464-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 12/10/2020] [Indexed: 11/10/2022] Open
Abstract
Background Globally, 15 million neonates are born prematurely every year, over half in low income countries (LICs). Premature and low birth weight neonates have a higher risk of intraventricular haemorrhage (IVH). There are minimal data regarding IVH in sub-Saharan Africa. This study aimed to examine the incidence, severity and timing of and modifiable risk factors for IVH amongst low-birth-weight neonates in Uganda. Methods This is a prospective cohort study of neonates with birthweights of ≤2000 g admitted to a neonatal unit (NU) in a regional referral hospital in eastern Uganda. Maternal data were collected from interviews and medical records. Neonates had cranial ultrasound (cUS) scans on the day of recruitment and days 3, 7 and 28 after birth. Risk factors were tabulated and are presented alongside odds ratios (ORs) and adjusted odds ratios (aORs) for IVH incidence. Outcomes included incidence, timing and severity of IVH and 28-day survival. Results Overall, 120 neonates were recruited. IVH was reported in 34.2% of neonates; 19.2% had low grade (Papile grades 1–2) and 15% had high grade (Papile grades 3–4). Almost all IVH (90.2%) occurred by day 7, including 88.9% of high grade IVH. Of those with known outcomes, 70.4% (81/115) were alive on day 28 and survival was not associated with IVH. We found that vaginal delivery, gestational age (GA) < 32 weeks and resuscitation in the NU increased the odds of IVH. Of the 6 neonates who received 2 doses of antenatal steroids, none had IVH. Conclusion In this resource limited NU in eastern Uganda, more than a third of neonates born weighing ≤2000 g had an IVH and the majority of these occurred by day 7. We found that vaginal birth, earlier gestation and need for resuscitation after admission to the NU increased the risk of IVH. This study had a high rate of SGA neonates and the risk factors and relationship of these factors with IVH in this setting needs further investigation. The role of antenatal steroids in the prevention of IVH in LICs also needs urgent exploration. Supplementary Information The online version contains supplementary material available at 10.1186/s12887-020-02464-4.
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Affiliation(s)
- R MacLeod
- Neonatal Unit, Mbale Regional Referral Hospital, P.O. Box 1966, Mbale, Uganda
| | - J N Paulson
- Department of Biostatistics, Product Development, Genentech, Inc., South San Francisco, California, USA
| | - N Okalany
- Neonatal Unit, Mbale Regional Referral Hospital, P.O. Box 1966, Mbale, Uganda
| | - F Okello
- Varimetrics Group Limited, P. O Box 2190, Mbale, Uganda
| | - L Acom
- Neonatal Unit, Mbale Regional Referral Hospital, P.O. Box 1966, Mbale, Uganda
| | - J Ikiror
- Neonatal Unit, Mbale Regional Referral Hospital, P.O. Box 1966, Mbale, Uganda
| | - F M Cowan
- Department of Paediatrics, Imperial College London, London, UK
| | - C J Tann
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, Keppel Street, London, UK.,MRC/UVRI & LSHTM Uganda Research Unit, PO Box 149, Entebbe, Uganda.,Neonatal Medicine, University College London Hospitals NHS Trust, 235 Euston Road, London, UK
| | - L E Dyet
- Neonatal Medicine, University College London Hospitals NHS Trust, 235 Euston Road, London, UK
| | - C F Hagmann
- Department of Neonatology and Pediatric Intensive Care, Children's University Hospital of Zurich, Zurich, Switzerland.,Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - K Burgoine
- Neonatal Unit, Mbale Regional Referral Hospital, P.O. Box 1966, Mbale, Uganda.
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Neurodevelopmental impairment at 2 years of age in children born before 29 weeks' gestation with bronchopulmonary dysplasia. Arch Pediatr 2020; 28:23-28. [PMID: 33257210 DOI: 10.1016/j.arcped.2020.10.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 07/30/2020] [Accepted: 10/02/2020] [Indexed: 11/23/2022]
Abstract
INTRODUCTION Very preterm children are at a high risk for neurological impairment, especially those with bronchopulmonary dysplasia (BPD). The main goal of this study was to describe the neurodevelopmental impairment (NDI) at 2 years of corrected age in children born before 29 weeks' gestation between 2010 and 2015 and affected by BPD at 28 days of life. We also searched for risk factors associated with NDI, especially postnatal steroid (PNS) administration. MATERIAL AND METHODS This was a retrospective study comprising a cohort of children hospitalized at the university hospital in Grenoble, born before 29 weeks' gestation between 2010 and 2015, and included in the monitoring network "Naitre et Devenir" (RND). Infants at 2 years of corrected age were classified as having NDI if they had at least one of the following outcomes: a global developmental quotient (DQ) on the revised Brunet-Lézine scale of<85, blindness, deafness, or cerebral palsy (CP) graded as level 3 or more according to the Gross Motor Function Classification System. RESULTS A total of 129 children were included, of whom 99 were monitored at the age of 2 years: 31.3% of the population had NDI and 4% had CP. The median DQ test result was 90 (interquartile 82-97). Factors associated with NDI in univariate analysis were low gestational age, low birth weight, a cord pH<7.2, chorioamnionitis, treatment for persistent ductus arteriosus, longer oxygen therapy, and outborn status, which almost reached statistical significance. In multivariate analysis, low gestational age and outborn status remained statistically significant, while chorioamnionitis was found to have some association with NDI. While 13.1% of the followed-up population was treated with PNS, this risk factor was not associated with NDI. CONCLUSION In a population of very preterm children, one third had NDI at 2 years of corrected age. Low gestational age, outborn status, and perinatal inflammation are associated with this unfavorable outcome. The frequency of sequelae confirms the importance of following up these children.
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10
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Ma Y, Xu Y, Jiang L, Shao X. Application of a Prediction Model Based on the Laboratory Index Score in Prelabor Rupture of Membranes with Histologic Chorioamnionitis During Late Pregnancy. Med Sci Monit 2020; 26:e924756. [PMID: 32996472 PMCID: PMC7534503 DOI: 10.12659/msm.924756] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background This study aimed to establish a prediction model based on the maternal laboratory index score (Lab-score) for histologic chorioamnionitis (HCA) in patients with prelabor rupture of membranes (PROM) during late pregnancy. Material/Methods Sixty-nine cases of pregnant women with PROM were retrospectively analyzed. The general information and laboratory indicators were compared between the HCA (n=22) and non-HCA (n=47) groups. A multivariate logistic regression method was used to establish the prediction model. We plotted the receiver operating characteristic curve and calculated the area under the curve (AUC). The clinical effectiveness of each model was compared by decision curve analysis. Results Only C-reactive protein (CRP) in the laboratory index predicted HCA, but its diagnostic efficacy was not ideal (AUC=0.651). Then, we added CRP to the platelet/white blood cell count ratio and triglyceride level to construct the Lab-score. Based on the Lab-score, important clinical parameters, including body mass index, diastolic blood pressure, and preterm birth, were introduced to construct a complex joint prediction model. The AUC of this model was significantly larger than that of CRP (0.828 vs. 0.651, P=0.035), but not significantly different from that of Lab-score (0.828 vs. 0.724, P=0.120). Considering the purpose of HCA screening, the net benefit of the complex model was better than that of Lab-score and CRP. Conclusions The complex model based on Lab-score is useful in the clinical screening of high-risk populations with PROM and HCA during late pregnancy.
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Affiliation(s)
- Yan Ma
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China (mainland)
| | - Yun Xu
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China (mainland)
| | - Lijuan Jiang
- Department of Clinical Laboratory, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China (mainland)
| | - Xiaonan Shao
- Department of Nuclear Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China (mainland)
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Bossung V, Fortmann MI, Fusch C, Rausch T, Herting E, Swoboda I, Rody A, Härtel C, Göpel W, Humberg A. Neonatal Outcome After Preeclampsia and HELLP Syndrome: A Population-Based Cohort Study in Germany. Front Pediatr 2020; 8:579293. [PMID: 33154958 PMCID: PMC7586782 DOI: 10.3389/fped.2020.579293] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/08/2020] [Indexed: 01/12/2023] Open
Abstract
Aim: To analyze short term outcomes of very low birth weight infants (VLBWI) born preterm after maternal preeclampsia and HELLP syndrome within the German Neonatal Network. Methods: The German Neonatal Network is a large population-based cohort study enrolling VLBWI since 2009. Two thousand six hundred and fifty two infants below 32 weeks of gestation born after maternal preeclampsia or HELLP syndrome and 13,383 infants born prematurely for other causes between 2009 and 2018 were included in our analysis. Descriptive statistics and multinomial regression models including preeclampsia and HELLP syndrome were performed for short-term outcome measures such as intracerebral hemorrhage, necrotizing enterocolitis requiring surgery, bronchopulmonary dysplasia, retinopathy of prematurity, periventricular leukomalacia, persistent ductus arteriosus requiring surgery, blood culture positive sepsis and death. Results: After adjustment for confounding variables, preterm birth due to preeclampsia or HELLP syndrome was associated with a reduced risk for intracerebral hemorrhage (OR 0.73, 95% CI 0.60-0.89), necrotizing enterocolitis requiring surgery (OR 0.35 95% CI 0.15-0.82), periventricular leukomalacia (OR 0.61 95% CI 0.40-0.92), and death (OR 0.72 95% CI 0.55-0.96) as compared to other causes of preterm birth. Conclusions: The indication for preterm birth has an impact on neonatal outcome in preterm infants born below 32 weeks. This notion should be included when counseling the families.
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Affiliation(s)
- Verena Bossung
- Department of Obstetrics and Gynaecology, University Hospital of Schleswig-Holstein, Lübeck, Germany
- *Correspondence: Verena Bossung
| | - Mats Ingmar Fortmann
- Department of Paediatrics, University Hospital of Schleswig-Holstein, Lübeck, Germany
| | - Christoph Fusch
- Department of Paediatrics, Paracelsus Medical School, General Hospital of Nuremberg, Nuremberg, Germany
| | - Tanja Rausch
- Department of Paediatrics, University Hospital of Schleswig-Holstein, Lübeck, Germany
- Institute of Medical Biometry and Statistics, University Medical Centre of Schleswig-Holstein, University of Luebeck, Luebeck, Germany
| | - Egbert Herting
- Department of Paediatrics, University Hospital of Schleswig-Holstein, Lübeck, Germany
| | - Isabelle Swoboda
- Department of Paediatrics, University Hospital of Schleswig-Holstein, Lübeck, Germany
| | - Achim Rody
- Department of Obstetrics and Gynaecology, University Hospital of Schleswig-Holstein, Lübeck, Germany
| | - Christoph Härtel
- Department of Paediatrics, University Hospital of Schleswig-Holstein, Lübeck, Germany
| | - Wolfgang Göpel
- Department of Paediatrics, University Hospital of Schleswig-Holstein, Lübeck, Germany
| | - Alexander Humberg
- Department of Paediatrics, University Hospital of Schleswig-Holstein, Lübeck, Germany
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Jensen EA, Foglia EE, Dysart KC, Simmons RA, Aghai ZH, DO AC, Greenspan JS, DeMauro SB. Adverse effects of small for gestational age differ by gestational week among very preterm infants. Arch Dis Child Fetal Neonatal Ed 2019; 104:F192-F198. [PMID: 29730594 PMCID: PMC6335180 DOI: 10.1136/archdischild-2017-314171] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 04/09/2018] [Accepted: 04/16/2018] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To characterise the excess risk for death, grade 3-4 intraventricular haemorrhage (IVH), bronchopulmonary dysplasia (BPD) and stage 3-5 retinopathy of prematurity independently associated with birth small for gestational age (SGA) among very preterm infants, stratified by completed weeks of gestation. METHODS Retrospective cohort study using the Optum Neonatal Database. Study infants were born <32 weeks gestation without severe congenital anomalies. SGA was defined as a birth weight <10th percentile. The excess outcome risk independently associated with SGA birth among SGA babies was assessed using adjusted risk differences (aRDs). RESULTS Of 6708 infants sampled from 717 US hospitals, 743 (11.1%) were SGA. SGA compared with non-SGA infants experienced higher unadjusted rates of each study outcome except grade 3-4 IVH among survivors. The excess risk independently associated with SGA birth varied by outcome and gestational age. The highest aRD for death (0.27; 95% CI 0.13 to 0.40) occurred among infants born at 24 weeks gestation and declined as gestational age increased. In contrast, the peak aRDs for BPD among survivors (0.32; 95% CI 0.20 to 0.44) and the composites of death or BPD (0.35; 95% CI 0.24 to 0.46) and death or major morbidity (0.35; 95% CI 0.24 to 0.45) occurred at 27 weeks gestation. The risk-adjusted probability of dying or developing one or more of the evaluated morbidities among SGA infants was similar to that of non-SGA infants born approximately 2-3 weeks less mature. CONCLUSION The excess risk for neonatal morbidity and mortality associated with being born SGA varies by adverse outcome and gestational age.
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Affiliation(s)
- Erik A Jensen
- Department of Pediatrics, Division of Neonatology, The Children’s Hospital of Philadelphia and The University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Elizabeth E Foglia
- Department of Pediatrics, Division of Neonatology, The Children’s Hospital of Philadelphia and The University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Kevin C Dysart
- Department of Pediatrics, Division of Neonatology, The Children’s Hospital of Philadelphia and The University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Rebecca A Simmons
- Department of Pediatrics, Division of Neonatology, The Children’s Hospital of Philadelphia and The University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Zubair H Aghai
- Division of Neonatology, Nemours/Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | | | - Jay S Greenspan
- Division of Neonatology, Nemours/Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Sara B DeMauro
- Department of Pediatrics, Division of Neonatology, The Children’s Hospital of Philadelphia and The University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
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Yap V, Perlman JM. Intraventricular Hemorrhage and White Matter Injury in the Preterm Infant. Neurology 2019. [DOI: 10.1016/b978-0-323-54392-7.00002-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Lorthe E. [Epidemiology, risk factors and child prognosis: CNGOF Preterm Premature Rupture of Membranes Guidelines]. ACTA ACUST UNITED AC 2018; 46:1004-1021. [PMID: 30385352 DOI: 10.1016/j.gofs.2018.10.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Indexed: 12/18/2022]
Abstract
OBJECTIVES To synthetize the available evidence regarding the incidence and risk factors of preterm premature rupture of membranes (PPROM). To describe the evolution of pregnancy, neonatal outcomes and the prognosis of infants born in a context of PPROM, according to the existence of an associated intrauterine infection and to the latency duration. METHOD Consultation of the Medline database, from 1980 to February 2018. RESULTS PPROM before 37 and before 34 weeks' gestation occur in 2-3% and <1% of pregnancies, respectively (LE2). Although many risk factors are identified, few are modifiable, and the vast majority of patients have no risk factors (LE2). Consequently, individual prediction of the risk of PPROM and primary prevention measures have not been shown to be effective and are not recommended in clinical practice (Grade B). Most women give birth within the week following PPROM (LE2). The main complications of PPROM are prematurity, intrauterine infection and obstetric and maternal complications (LE2). Latency duration and the frequency of complications decrease with increasing gestational age at PPROM (LE2). Neonatal prognosis is largely conditioned by gestational age at birth, with no apparent over-risk of poor outcomes linked to PPROM compared to other causes of preterm birth (LE2). In contrast, intrauterine infection is associated with an increased risk of in utero fetal death (LE3), necrotizing enterocolitis (LE1) and early-onset sepsis (LE2). The association of intrauterine infection with neurological morbidity remains controversial. Prolongation of latency, from gestational age at PPROM, is beneficial for the child (LE2). CONCLUSION PPROM is a major cause of prematurity and short- and long-term mortality and morbidity. Antenatal care is an important issue for obstetric and pediatric teams, aiming to reduce complications and adverse consequences for both mother and child.
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Affiliation(s)
- E Lorthe
- Inserm UMR 1153, obstetrical, perinatal and pediatric epidemiology research team (Épopé), Center for epidemiology and statistics Sorbonne Paris Cité, département hospitalo-universitaire risks in pregnancy, Paris Descartes university, 75000 Paris, France; EPI unit - institute of public health, university of Porto, rua das Taipas n(o) 135, 4050-600 Porto, Portugal.
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15
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Huang J, Zhang L, Kang B, Zhu T, Li Y, Zhao F, Qu Y, Mu D. Association between perinatal hypoxic-ischemia and periventricular leukomalacia in preterm infants: A systematic review and meta-analysis. PLoS One 2017; 12:e0184993. [PMID: 28931047 PMCID: PMC5607162 DOI: 10.1371/journal.pone.0184993] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 09/04/2017] [Indexed: 11/18/2022] Open
Abstract
Background Although investigators have implicated hypoxic-ischemia (HI) as a potential cause of periventricular leukomalacia (PVL), the role of clinical risk factors or markers for HI in the development of PVL remains controversial. The aim of this study was to identify perinatal HI-related factors associated with PVL. Method The PubMed, EMBASE, and Cochrane Library databases were searched. The last search was performed on January 2017. Summary effect estimates (pooled odds ratios [ORs]) were calculated for each risk factor using fixed or random effects models with tests for heterogeneity and publication bias. Results Fifteen studies with a total of 12,851 participants were included in this meta-analysis, and 14 potential risk factors were analyzed. The pooled results showed that mothers with oligohydramnios (OR, 1.55; 95% confidence interval [CI], 1.05 to 2.30), preterm infants with acidemia (OR, 1.87; 95% CI, 1.18 to 2.97), 1-minute Apgar score <7 (OR 2.69; 95% CI, 1.13 to 6.41), 5-minute Apgar score <7 (OR, 1.89; 95% CI, 1.39 to 2.56), apnea (OR, 1.76; 95% CI, 1.07 to 2.90), respiratory distress syndrome (OR, 1.46; 95% CI, 1.04 to 2.03), and seizures (OR, 4.60; 95% CI, 2.84 to 7.46) were associated with increased risk of PVL. Conclusion This study identified perinatal HI-related risk factors for the development of PVL in preterm infants. Future large-scale prospective clinical studies are required to validate and extend these findings.
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Affiliation(s)
- Jichong Huang
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Li Zhang
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Bingyao Kang
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Tingting Zhu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Yafei Li
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Fengyan Zhao
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Yi Qu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Dezhi Mu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
- * E-mail:
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Leading causes of preterm delivery as risk factors for intraventricular hemorrhage in very preterm infants: results of the EPIPAGE 2 cohort study. Am J Obstet Gynecol 2017; 216:518.e1-518.e12. [PMID: 28104401 DOI: 10.1016/j.ajog.2017.01.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 01/04/2017] [Accepted: 01/09/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND Intraventricular hemorrhage is a major risk factor for neurodevelopmental disabilities in preterm infants. However, few studies have investigated how pregnancy complications responsible for preterm delivery are related to intraventricular hemorrhage. OBJECTIVE We sought to investigate the association between the main causes of preterm delivery and intraventricular hemorrhage in very preterm infants born in France during 2011 between 22-31 weeks of gestation. STUDY DESIGN The study included 3495 preterm infants from the national EPIPAGE 2 cohort study who were admitted to neonatal intensive care units and had at least 1 cranial ultrasound assessment. The primary outcome was grade I-IV intraventricular hemorrhage according to the Papile classification. Multinomial logistic regression models were used to study the relationship between risk of intraventricular hemorrhage and the leading causes of preterm delivery: vascular placental diseases, isolated intrauterine growth retardation, placental abruption, preterm labor, and premature rupture of membranes, with or without associated maternal inflammatory syndrome. RESULTS The overall frequency of grade IV, III, II, and I intraventricular hemorrhage was 3.8% (95% confidence interval, 3.2-4.5), 3.3% (95% confidence interval, 2.7-3.9), 12.1% (95% confidence interval, 11.0-13.3), and 17.0% (95% confidence interval, 15.7-18.4), respectively. After adjustment for gestational age, antenatal magnesium sulfate therapy, level of care in the maternity unit, antenatal corticosteroids, and chest compressions, infants born after placental abruption had a higher risk of grade IV and III intraventricular hemorrhage compared to those born under placental vascular disease conditions, with adjusted odds ratios of 4.3 (95% confidence interval, 1.1-17.0) and 4.4 (95% confidence interval, 1.1-17.6), respectively. Similarly, preterm labor with concurrent inflammatory syndrome was associated with an increased risk of grade IV intraventricular hemorrhage (adjusted odds ratio, 3.4; 95% confidence interval, 1.1-10.2]). Premature rupture of membranes did not significantly increase the risk. CONCLUSION Relationships between the causes of preterm birth and intraventricular hemorrhage were limited to specific and rare cases involving acute hypoxia-ischemia and/or inflammation. While the emergent nature of placental abruption would challenge any attempts to optimize management, the prenatal care offered during preterm labor could be improved.
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Porte B, Chatelain C, Hardouin J, Derambure C, Zerdoumi Y, Hauchecorne M, Dupré N, Bekri S, Gonzalez B, Marret S, Cosette P, Leroux P. Proteomic and transcriptomic study of brain microvessels in neonatal and adult mice. PLoS One 2017; 12:e0171048. [PMID: 28141873 PMCID: PMC5283732 DOI: 10.1371/journal.pone.0171048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 01/13/2017] [Indexed: 12/17/2022] Open
Abstract
Infants born before 29 weeks gestation incur a major risk of preterm encephalopathy and subependymal/intracerebral/intraventricular haemorrhage. In mice, an ontogenic window of haemorrhage risk was recorded up to 5 days after birth in serpine1 knock-out animals. Using proteome and transcriptome approaches in mouse forebrain microvessels, we previously described the remodelling of extracellular matrix and integrins likely strengthening the vascular wall between postnatal day 5 (P5) and P10. Haemorrhage is the ultimate outcome of vessel damage (i.e., during ischaemia), although discreet vessel insults may be involved in the aetiology of preterm encephalopathy. In this study, we examined proteins identified by mass spectrometry and segregating in gene ontology pathways in forebrain microvessels in P5, P10, and adult wild type mice. In parallel, comparative transcript levels were obtained using RNA hybridization microarrays and enriched biological pathways were extracted from genes exhibiting at least a two-fold change in expression. Five major biological functions were observed in those genes detected both as proteins and mRNA expression undergoing at least a two-fold change in expression in one or more age comparisons: energy metabolism, protein metabolism, antioxidant function, ion exchanges, and transport. Adult microvessels exhibited the highest protein and mRNA expression levels for a majority of genes. Energy metabolism-enriched gene ontology pathways pointed to the preferential occurrence of glycolysis in P5 microvessels cells versus P10 and adult preparations enriched in aerobic oxidative enzymes. Age-dependent levels of RNA coding transport proteins at the plasma membrane and mitochondria strengthened our findings based on protein data. The data suggest that immature microvessels have fewer energy supply alternatives to glycolysis than mature structures. In the context of high energy demand, this constraint might account for vascular damage and maintenance of the high bleeding occurrence in specific areas in immature brain.
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Affiliation(s)
- Baptiste Porte
- Normandie Université, UNIROUEN, U1245, INSERM, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Clémence Chatelain
- Normandie Université, UNIROUEN, U1245, INSERM, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Julie Hardouin
- Normandie Université, UNIROUEN, UMR-6270, CNRS, IRIB, Mont-Saint-Aignan, France
- Normandie Université, UNIROUEN, Proteomic Facility PISSARO, IRIB, Mont-Saint-Aignan, France
| | - Céline Derambure
- Normandie Université, UNIROUEN, UMR-S905, INSERM, IRIB, Rouen, France
| | - Yasmine Zerdoumi
- Normandie Université, UNIROUEN, U1245, INSERM, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Michèle Hauchecorne
- Normandie Université, UNIROUEN, U1245, INSERM, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Nicolas Dupré
- Normandie Université, UNIROUEN, U1245, INSERM, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Soumeya Bekri
- Normandie Université, UNIROUEN, U1245, INSERM, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
- Metabolic Biochemistry Department, Rouen University Hospital, Rouen, France
| | - Bruno Gonzalez
- Normandie Université, UNIROUEN, U1245, INSERM, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Stéphane Marret
- Normandie Université, UNIROUEN, U1245, INSERM, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
- Neonatal Pediatrics and Intensive Care Department, Rouen University Hospital, Rouen, France
| | - Pascal Cosette
- Normandie Université, UNIROUEN, UMR-6270, CNRS, IRIB, Mont-Saint-Aignan, France
- Normandie Université, UNIROUEN, Proteomic Facility PISSARO, IRIB, Mont-Saint-Aignan, France
| | - Philippe Leroux
- Normandie Université, UNIROUEN, U1245, INSERM, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
- * E-mail:
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El Ayoubi M, Patkai J, Bordarier C, Desfrere L, Moriette G, Jarreau PH, Zeitlin J. Impact of fetal growth restriction on neurodevelopmental outcome at 2 years for extremely preterm infants: a single institution study. Dev Med Child Neurol 2016; 58:1249-1256. [PMID: 27520849 DOI: 10.1111/dmcn.13218] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/24/2016] [Indexed: 01/28/2023]
Abstract
AIM We evaluated the impact of fetal growth restriction on neurodevelopmental outcomes at 2 years corrected age for infants born before 27 weeks gestational age. METHOD Data on infants born before 27 weeks gestational age between 1999 and 2008 (n=463), admitted to a tertiary neonatal unit in Paris, were used to compare neurological outcomes at 2 years for infants with birthweight lower than the 10th centile and birthweight of at least the 10th centile, using intrauterine reference curves. Outcomes were cerebral palsy (CP) and the Brunet-Lézine assessment of cognitive development, which provides age-corrected overall and domain-specific (global and fine motor skills, language and social interaction) developmental quotients. Models were adjusted for perinatal and social factors. RESULTS Seventy-two percent of infants were discharged alive. Eighty-three percent (n=268) were evaluated at 2 years. Six percent had CP. Fetal growth restriction was not associated with the risk of CP. After adjustment, children with a birthweight lower than the 10th centile had a global developmental quotient 4.7 points lower than those with birthweight of at least the 10th centile (p<0.001); differences were greatest for fine motor and social skills (-4.7, p=0.053 and -7.3, p<0.001 respectively). INTERPRETATION In extremely preterm children, fetal growth restriction was associated with poorer neurodevelopmental outcomes at 2 years, but not with CP.
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Affiliation(s)
- Mayass El Ayoubi
- INSERM UMR 1153, Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epopé), Center for Epidemiology and Statistics Sorbonne Paris Cité, DHU Risks in Pregnancy, Paris Descartes University, Paris, France.,Service de Médecine et Réanimation Néonatales de Port-Royal, Hôpitaux Universitaire Paris Centre Site Cochin, Université Paris V René Descartes and Assistance Publique Hôpitaux de Paris, Paris, France
| | - Juliana Patkai
- Service de Médecine et Réanimation Néonatales de Port-Royal, Hôpitaux Universitaire Paris Centre Site Cochin, Université Paris V René Descartes and Assistance Publique Hôpitaux de Paris, Paris, France
| | - Cécile Bordarier
- Service de Médecine et Réanimation Néonatales de Port-Royal, Hôpitaux Universitaire Paris Centre Site Cochin, Université Paris V René Descartes and Assistance Publique Hôpitaux de Paris, Paris, France
| | - Luc Desfrere
- Service de Médecine et Réanimation Néonatales - Maternité de Louis Mourier, Hôpitaux Universitaires Paris Nord-Val de Seine, Paris, France
| | - Guy Moriette
- Service de Médecine et Réanimation Néonatales de Port-Royal, Hôpitaux Universitaire Paris Centre Site Cochin, Université Paris V René Descartes and Assistance Publique Hôpitaux de Paris, Paris, France
| | - Pierre-Henri Jarreau
- Service de Médecine et Réanimation Néonatales de Port-Royal, Hôpitaux Universitaire Paris Centre Site Cochin, Université Paris V René Descartes and Assistance Publique Hôpitaux de Paris, Paris, France
| | - Jennifer Zeitlin
- INSERM UMR 1153, Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epopé), Center for Epidemiology and Statistics Sorbonne Paris Cité, DHU Risks in Pregnancy, Paris Descartes University, Paris, France
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Doshi H, Moradiya Y, Roth P, Blau J. Variables associated with the decreased risk of intraventricular haemorrhage in a large sample of neonates with respiratory distress syndrome. Arch Dis Child Fetal Neonatal Ed 2016; 101:F223-9. [PMID: 26394896 DOI: 10.1136/archdischild-2015-308396] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 08/27/2015] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Prematurity and other risk factors are associated with the development of intraventricular haemorrhage (IVH) in newborns with respiratory distress syndrome (RDS). Conversely, further analysis can determine what characteristics might be associated with a decreased risk of IVH. STUDY DESIGN By using International Classification of Diseases, Ninth Revision, Clinical Modification codes from data obtained from the Nationwide Inpatient Sample of the Healthcare Cost and Utilization Project from 2000 to 2009, we identified a large number of cases of RDS. Multivariable logistic regression analysis identified potential variables associated with decreased risk of IVH. RESULT Our cohort included 194 621 neonates with RDS, of whom 20 386 (10.5%) developed IVH. Variables associated with decreased risk of both all grades of IVH and severe IVH only included infant of diabetic mother (IDM) status (OR 0.62 (0.54 to 0.70), p<0.001; OR 0.56 (0.42 to 0.74), p<0.001), Trisomy 21 (OR 0.45 (0.30 to 0.69), p<0.001; OR 0.38 (0.16 to 0.93), p=0.034), maternal hypertension (OR 0.62 (0.53 to 0.72), p<0.001; OR 0.28 (0.18 to 0.43), p<0.001), caesarean birth (OR 0.79 (0.74 to 0.84), p<0.001; OR 0.83 (0.73 to 0.94), p<0.001) and, consistent with prior studies, female gender (OR 0.85 (0.82 to 0.88), p<0.001; OR 0.76 (0.72 to 0.80), p<0.001). Polycythaemia (OR 0.67 (0.49 to 0.92), p=0.013; OR 0.79 (0.43 to 1.45), p=0.449) and hypothermia (OR 0.86 (0.75 to 0.99), p=0.039; OR 1.01 (0.81 to 1.28), p=0.903) were associated with lower risk of all IVH but not severe IVH only. CONCLUSIONS Previous associations with IVH such as lower birth weight were confirmed. However, infants in whom new variables such as IDM status were present were less likely to develop all IVH grades. Further analysis of these potential protective variables is necessary to better understand the pathophysiology of IVH.
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Affiliation(s)
- Harshit Doshi
- Division of Neonatology, Department of Pediatrics, Staten Island University Hospital, Staten Island, New York, USA
| | - Yogesh Moradiya
- Departments of Neurology, SUNY Downstate Medical Center, Brooklyn, New York, USA
| | - Philip Roth
- Division of Neonatology, Department of Pediatrics, Staten Island University Hospital, Staten Island, New York, USA Departments of Pediatrics, SUNY Downstate Medical Center, Brooklyn, New York, USA
| | - Jonathan Blau
- Division of Neonatology, Department of Pediatrics, Staten Island University Hospital, Staten Island, New York, USA Departments of Pediatrics, SUNY Downstate Medical Center, Brooklyn, New York, USA
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Gestational Hypertension and Organophosphorus Pesticide Exposure: A Cross-Sectional Study. BIOMED RESEARCH INTERNATIONAL 2015; 2015:280891. [PMID: 26339602 PMCID: PMC4538315 DOI: 10.1155/2015/280891] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 01/22/2015] [Accepted: 05/27/2015] [Indexed: 11/17/2022]
Abstract
Hypertension is the most common medical problem encountered during pregnancy, complicating 2-3% of pregnancies. High blood pressure (BP) with diastolic BP ≥ 90 mm Hg and/or systolic BP ≥ 140 mm Hg arising after week 22 of pregnancy and resolving after delivery is defined as gestational hypertension (GHY). The aim of this cross-sectional study was to investigate whether occupational and/or environmental exposure to organophosphorus (OP) pesticide affects GHY. Women at approximately 22 weeks of gestation were recruited. OP pesticide exposure in the first trimester of pregnancy was classified into four categories: no exposure, indirect exposure, domestic exposure, and occupational exposure. Application of the exclusion criteria left 2203 participants (mean age 30.4 ± 11.6 years). Data analysis showed that in women with indirect OP pesticide exposure the incidence of GHY was slightly higher than that in the world population, whereas domestic exposure involved a 7% increase and occupational exposure a 12% increase. Analysis of the pesticides used by participants highlighted a possible role for malathion and diazinon (adjusted OR 1.09 and 1.14, resp.). Further investigation of exposed workers and the general population is clearly warranted given the broad diffusion of OP pesticides and their possible public health impact, maybe by including a wider range of health outcomes.
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Controlled direct effects of preeclampsia on neonatal health after accounting for mediation by preterm birth. Epidemiology 2015; 26:17-26. [PMID: 25437315 DOI: 10.1097/ede.0000000000000213] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Preeclampsia is characterized by alterations in angiogenic factors that may increase neonatal morbidity independent of preterm birth. METHODS We estimated the controlled direct effect of preeclampsia on neonatal outcomes independent of preterm birth among 200,103 normotensive and 10,507 preeclamptic singleton pregnancies in the Consortium on Safe Labor (2002-2008). Marginal structural models with stabilized inverse probability weights accounted for potential confounders in the pathway from preeclampsia to preterm birth to neonatal outcomes, including mediator-outcome confounders related to preeclampsia status, such as cesarean delivery. Controlled direct effects of preeclampsia on perinatal mortality, small for gestational age (SGA), neonatal intensive care unit (NICU) admission, respiratory distress syndrome, transient tachypnea of the newborn, anemia, apnea, asphyxia, peri- or intraventricular hemorrhage, and cardiomyopathy were estimated for the hypothesized intervention of term delivery for all infants. RESULTS When delivery was set at ≥37 weeks, preeclampsia increased the odds of perinatal mortality (odds ratio = 2.2 [95% confidence interval = 1.1-4.5], SGA = (1.9 [1.8-2.1]), NICU admission (1.9 [1.7-2.1]), respiratory distress syndrome (2.8 [2.0-3.7], transient tachypnea of the newborn (1.6 [1.3-1.9]), apnea (2.2 [1.6-3.1]), asphyxia (2.7 [1.5-4.9]), and peri- or intraventricular hemorrhage (3.2 [1.4-7.7]). No direct effect of preeclampsia at term was observed for anemia or cardiomyopathy. Our results appear robust in the presence of moderate confounding, and restriction to severe preeclampsia yielded similar findings. CONCLUSION Preeclampsia was directly associated with adverse neonatal outcomes beyond morbidity mediated by preterm birth. Although severe neonatal outcomes were less common at later gestational ages, marginal structural models suggested elevated neonatal risk due to preeclampsia even if it was possible to deliver all infants at term.
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Tsai LY, Chen YL, Tsou KI, Mu SC. The impact of small-for-gestational-age on neonatal outcome among very-low-birth-weight infants. Pediatr Neonatol 2015; 56:101-7. [PMID: 25440777 DOI: 10.1016/j.pedneo.2014.07.007] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 07/11/2014] [Accepted: 07/21/2014] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND This study aimed to evaluate the impact of small-for-gestational-age (SGA) on mortality and morbidity in very-low-birth-weight (VLBW) infants. METHODS We conducted a retrospective cohort study on VLBW infants registered at the Premature Baby Foundation of Taiwan between 2007 and 2011. All 21 neonatal departments in Taiwan participated in the data collection, and a total of 4636 VLBW infants were registered during the study period. The SGA group (n = 560) was selected from the database on the basis of birth weight below the 10(th) percentile for gestational age, whereas the appropriate-weight-for-gestational-age (AGA) group (n = 1120) included infants randomly selected via incidence density sampling with a 2:1 match for each SGA case. The association of SGA with individual outcome variables including mortality, respiratory distress syndrome, necrotizing enterocolitis, retinopathy of prematurity (ROP), intraventricular hemorrhage, periventricular leukomalacia, and bronchopulmonary dysplasia (BPD) was evaluated after adjustment for potential confounders. RESULTS The SGA group was associated with increased risks of mortality [odds ratio (OR) 1.89; 95% confidence interval (CI) 1.39‒2.58], severe ROP (OR 1.56; 95% CI 1.13-2.14), and BPD (OR 2.08; 95% CI 1.58-2.75) compared to the AGA group. Further subgroup analysis showed that SGA had significant effects on mortality in the VLBW infants with a gestational age of 24-29 weeks, as well as on BPD in those with a gestational age of 27-32 weeks. By contrast, the association of SGA with severe ROP was only significant in the VLBW infants with a gestational age of 27-29 weeks. CONCLUSION Our data provide evidence that SGA may be associated with increased risks of neonatal mortality, ROP, and BPD in VLBW infants.
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Affiliation(s)
- Li-Yi Tsai
- Department of Pediatrics, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; Institute of Occupational Medicine and Industrial Hygiene, National Taiwan University College of Public Health, Taipei, Taiwan
| | - Yi-Ling Chen
- Department of Pediatrics, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Kuo-Inn Tsou
- College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan; Department of Pediatrics, Catholic Tien Hospital, Taipei, Taiwan
| | - Shu-Chi Mu
- Department of Pediatrics, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; School of Medicine, Taipei Medical University, Taipei, Taiwan.
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[Course and neurological/behavioral development of preterm children]. Arch Pediatr 2014; 22:195-202. [PMID: 25541510 DOI: 10.1016/j.arcped.2014.11.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 10/11/2014] [Accepted: 11/19/2014] [Indexed: 11/21/2022]
Abstract
Preterm birth remains a public health priority given that one child out of ten is born before 37 weeks of gestation. Survival without major neonatal morbidity has increased in high-income countries, in particular in France and in cases of extreme preterm birth before 27 weeks of gestation. Rate of severe handicaps, such as cerebral palsy, is probably decreasing, but specific cognitive disabilities in a variety of domains remain frequent, interfering with normal learning abilities at school and explaining the high rate of special education needs. Prevalence of sequelae increases when gestational age at birth decreases. However, because there are more moderate to late preterm children compared to very preterm children, the absolute number of children with specific cognitive or neurological disabilities is equivalent in these two groups. Better characterization of the development in a recent cohort of very preterm children is necessary to improve the early detection of variations in normal neurodevelopment and to propose trials with remediation actions targeting working memory and language for example. These protocols could decrease the rates of learning disabilities at school.
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Corchia C, Da Frè M, Di Lallo D, Gagliardi L, Macagno F, Carnielli V, Miniaci S, Cuttini M. Mortality and major morbidities in very preterm infants born from assisted conception or naturally conceived: results of the area-based ACTION study. BMC Pregnancy Childbirth 2014; 14:307. [PMID: 25193062 PMCID: PMC4177255 DOI: 10.1186/1471-2393-14-307] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Accepted: 07/22/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The use of assisted conception (AC) has been associated with higher risk of adverse perinatal outcome. Few data are available on the outcome of AC-neonates when pregnancy ends before 32 weeks of gestational age.The aim of this study was to compare the short-term outcome of AC- and naturally conceived preterm infants <32 weeks gestation. METHODS The area-based cohort study ACTION collected data on births 22-31 weeks gestation occurred in 2003-05 in 6 Italian regions. Infants born to 2529 mothers with known mode of conception were studied. The main outcomes were hospital mortality and survival free from major morbidities (IVH grade 3-4, cPVL, ROP stage ≥3, BPD), and were assessed separately for single and multiple infants. Other outcomes were also investigated. Multivariable logistic analyses were used to adjust for maternal and infants' characteristics. To account for the correlation of observations within intensive care units, robust variance and standard error estimates of regression parameters were computed. RESULTS AC was used in 6.4% of mothers. Infants were 2934; 314 (10.7%) were born after AC. Multiples were 86.0% among AC and 21.7% among non-AC babies. In multivariable analysis no statistically significant difference in hospital mortality and survival without major morbidities was found between AC and non-AC infants. The risk of BPD was lower in AC than in non-AC multiples (aOR 0.41, CI 0.20-0.87), and this finding did not change after controlling for mechanical ventilation (aOR 0.42, CI 0.20-0.85) or presence of a patent ductus arteriosus (aOR 0.39, CI 0.18-0.84). CONCLUSION When the analysis is restricted to very preterm infants and stratified by multiplicity, no significant associations between AC and increased risk of short-term mortality and survival without major morbidities emerge. This result is consistent with previous studies, and may confirm the hypothesis that the adverse effects of AC are mediated by preterm birth. However, larger appropriately powered studies are needed before definitely excluding the possibility of adverse events linked to AC in infants born before 32 weeks gestation.
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Affiliation(s)
- Carlo Corchia
- ICBD, International Centre on Birth Defects and Prematurity, via Carlo Mirabello 14, 00195 Rome, Italy.
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Regev RH, Arnon S, Litmanovitz I, Bauer-Rusek S, Boyko V, Lerner-Geva L, Reichman B. Outcome of singleton preterm small for gestational age infants born to mothers with pregnancy-induced hypertension. A population-based study. J Matern Fetal Neonatal Med 2014; 28:666-73. [DOI: 10.3109/14767058.2014.928851] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Verspyck E, Bisson V, Roman H, Marret S. Adverse respiratory outcome after premature rupture of membranes before viability. Acta Paediatr 2014; 103:256-61. [PMID: 24175963 DOI: 10.1111/apa.12489] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 10/04/2013] [Accepted: 10/28/2013] [Indexed: 11/30/2022]
Abstract
AIM To determine whether preterm premature rupture of membranes (PPROM) before 24 weeks is an independent risk factor for poor outcome in preterm neonates. METHODS A retrospective comparative cohort study was conducted, including viable premature infants born between 25 and 34-weeks gestation. Each preterm case with early PPROM was matched with two preterm controls of the same gestational age at birth, sex and birth date and who were born spontaneously with intact membranes. Logistic regression was performed to identify independent risk factors associated with composite respiratory and perinatal adverse outcomes for the overall population of preterm infants. RESULTS Thirty-five PPROM cases were matched with 70 controls. Extreme prematurity (26-28 weeks) was an independent risk factor for composite perinatal adverse outcomes [odds ratio (OR) 43.9; p = 0.001]. Extreme prematurity (OR 42.9; p = 0.001), PPROM (OR 7.1; p = 0.01), male infant (OR 5.2; p = 0.02) and intrauterine growth restriction (IUGR, OR 4.8; p = 0.04) were factors for composite respiratory adverse outcomes. CONCLUSION Preterm premature rupture of membranes before viability represents an independent risk factor for composite respiratory adverse outcomes in preterm neonates. Extreme prematurity may represent the main risk factor for both composite respiratory and perinatal adverse outcomes.
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Affiliation(s)
- Eric Verspyck
- Department of Obstetrics and Gynecology; Rouen University Hospital; Rouen France
- Region-INSERM Team (ERI28) Neovasc; Perinatal Handicap; Institute for Biomedical Research and Innovation (IRIB); School of Medicine; University of Rouen; Rouen France
| | - Violene Bisson
- Department of Obstetrics and Gynecology; Rouen University Hospital; Rouen France
| | - Horace Roman
- Department of Obstetrics and Gynecology; Rouen University Hospital; Rouen France
| | - Stéphane Marret
- Region-INSERM Team (ERI28) Neovasc; Perinatal Handicap; Institute for Biomedical Research and Innovation (IRIB); School of Medicine; University of Rouen; Rouen France
- Department of Neonatal Medicine and Intensive Care; Rouen University Hospital; Rouen France
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Risk for late-onset blood-culture proven sepsis in very-low-birth weight infants born small for gestational age: a large multicenter study from the German Neonatal Network. Pediatr Infect Dis J 2014; 33:238-43. [PMID: 24030351 DOI: 10.1097/inf.0000000000000031] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND It was the aim of this study to assess whether very-low-birth-weight (VLBW) infants born small for gestational age (SGA; birth weight less than 10th percentile) are at increased risk for late-onset sepsis. METHODS This was a prospective, multicenter study of the German Neonatal Network including VLBW infants from 23 to < 32 weeks post menstrual age born 2009-2011. Outcomes were compared between VLBW infants born SGA (birth weight less than tenth percentile according to gestational age and gender) and non-SGA infants. The main outcome measure was at least 1 episode of late-onset sepsis defined as blood-culture-confirmed clinical sepsis occurring at ≥ 72 hours of age. RESULTS 5886 VLBW infants were included. In SGA infants (n = 692), an increased incidence of late-onset sepsis was noted compared with non-SGA infants (20.1% vs. 14.3 %, P < 0.001). This difference was only observed among infants with a gestational age of 27 to < 32 weeks and attributed to sepsis episodes with coagulase-negative staphylococci (12.8% vs. 8.3%, P < 0.001). Different treatment modalities (eg more frequent use of central venous lines) and longer duration of invasive therapies (parenteral nutrition, mechanical ventilation, hospitalization) may account for the increased sepsis risk with coagulase-negative staphylococci in our SGA cohort. In a multivariate logistic regression analysis, higher gestational age [per week; odds ratio (OR): 0.75, 95% confidence interval (CI): 0.72-0.78, P< 0.0001], treatment with antenatal steroids (OR: 0.7, 95% CI: 0.53-0.92, P = 0.01), German descendance (OR: 0.76, 95% CI: 0.63-0.91, P = 0.003) and prophylaxis with glycopeptide antibiotics (OR: 0.64, 95% CI: 0.47-0.87, P = 0.005) were shown to be protective against late-onset sepsis. In contrast, longer duration of parenteral nutrition (per day; OR: 1.016, 95% CI: 1.011-1.021, P < 0.0001) and SGA were found to be risk factors (OR: 1.31, 95% CI: 1.02-1.68, P= 0.03). CONCLUSIONS SGA contributes to the risk of late-onset sepsis in VLBW infants. Future studies are needed to investigate the underlying pathophysiology to guide individualized preventive measures in this vulnerable subgroup.
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Luque MJ, Tapia JL, Villarroel L, Marshall G, Musante G, Carlo W, Kattan J. A risk prediction model for severe intraventricular hemorrhage in very low birth weight infants and the effect of prophylactic indomethacin. J Perinatol 2014; 34:43-8. [PMID: 24113396 DOI: 10.1038/jp.2013.127] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 08/22/2013] [Accepted: 08/27/2013] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Develop a risk prediction model for severe intraventricular hemorrhage (IVH) in very low birth weight infants (VLBWI). STUDY DESIGN Prospectively collected data of infants with birth weight 500 to 1249 g born between 2001 and 2010 in centers from the Neocosur Network were used. Forward stepwise logistic regression model was employed. The model was tested in the 2011 cohort and then applied to the population of VLBWI that received prophylactic indomethacin to analyze its effect in the risk of severe IVH. RESULT Data from 6538 VLBWI were analyzed. The area under ROC curve for the model was 0.79 and 0.76 when tested in the 2011 cohort. The prophylactic indomethacin group had lower incidence of severe IVH, especially in the highest-risk groups. CONCLUSION A model for early severe IVH prediction was developed and tested in our population. Prophylactic indomethacin was associated with a lower risk-adjusted incidence of severe IVH.
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Affiliation(s)
- M J Luque
- Division de Pediatria, Hospital Clinico Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - J L Tapia
- Seccion de Neonatologia, Hospital Clinico Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - L Villarroel
- Departamento Salud Publica, Pontificia Universidad Catolica, Santiago, Chile
| | - G Marshall
- Facultad de Matematicas, Pontificia Universidad Catolica, Santiago, Chile
| | - G Musante
- Servicio de Neonatologia, Hospital Universitario Austral, Pilar, Argentina
| | - W Carlo
- Division of Neonatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - J Kattan
- Seccion de Neonatologia, Hospital Clinico Pontificia Universidad Catolica de Chile, Santiago, Chile
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Flamant C, Gascoin G. Devenir précoce et prise en charge néonatale du nouveau-né petit pour l’âge gestationnel. ACTA ACUST UNITED AC 2013; 42:985-95. [DOI: 10.1016/j.jgyn.2013.09.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mura T, Picaud JC, Larroque B, Galtier F, Marret S, Roze JC, Truffert P, Kuhn P, Fresson J, Thiriez G, Arnaud C, Mercier G, Picot MC, Ancel PY, Ledesert B. Cognitive impairment at age 5 years in very preterm infants born following premature rupture of membranes. J Pediatr 2013; 163:435-40. [PMID: 23490036 DOI: 10.1016/j.jpeds.2013.01.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 12/07/2012] [Accepted: 01/16/2013] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To evaluate the relationship between preterm premature rupture of membranes (PPROM) and cognitive impairment in 5-year-old children born very preterm. STUDY DESIGN The Etude Epidémiologique sur les Petits Ages Gestationnels Study is a population-based cohort of children followed up from birth to age 5 years recruited in 9 French regions in 1997. We analyzed data from singletons born between 24 and 32 weeks gestation categorized into 4 groups according to etiology of prematurity: infants born after PPROM, after idiopathic preterm labor, in a vascular context (Vasc), and to women with other complications (Other). Cognitive development at age 5 years was assessed using the Mental Processing Composite score of the Kaufman-Assessment Battery for Children. RESULTS Among the 1051 children followed up to age 5 years, the mean Mental Processing Composite score was 93.6 ± 19.7, and 13.3% of the children (140 of 1051) had cognitive impairment. After adjustment for potential confounders, the risk of cognitive impairment among infants in the PPROM group was not significantly different than that in the idiopathic preterm labor group (OR, 1.09; 95% CI, 0.62-1.92) and the Other group (OR, 1.36; 95% CI, 0.75-2.47), but was lower than that in the Vasc group (OR, 1.86; 95% CI, 1.16-2.97). In the PPROM group, the risk of cognitive impairment was greater when the latency period (ie, time from rupture to delivery) was <3 days (OR, 2.32; 95% CI, 1.07-5.02). CONCLUSION Preterm infants born after PPROM are not at increased risk for cognitive impairment in childhood, but the time between PPROM and birth may influence that risk.
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Affiliation(s)
- Thibault Mura
- Clinical Investigation Center and Information Medical Department, University Hospital of Montpellier, Montpellier, France.
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Jelliffe-Pawlowski LL, Shaw GM, Currier RJ, Stevenson DK, Baer RJ, O'Brodovich HM, Gould JB. Association of early-preterm birth with abnormal levels of routinely collected first- and second-trimester biomarkers. Am J Obstet Gynecol 2013; 208:492.e1-11. [PMID: 23395922 DOI: 10.1016/j.ajog.2013.02.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 12/12/2012] [Accepted: 02/04/2013] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The purpose of this study was to examine the relationship between typically measured prenatal screening biomarkers and early-preterm birth in euploid pregnancies. STUDY DESIGN The study included 345 early-preterm cases (<30 weeks of gestation) and 1725 control subjects who were drawn from a population-based sample of California pregnancies who had both first- and second-trimester screening results. Logistic regression analyses were used to compare patterns of biomarkers in cases and control subjects and to develop predictive models. Replicability of the biomarker early-preterm relationships that was revealed by the models was evaluated by examination of the frequency and associated adjusted relative risks (RRs) for early-preterm birth and for preterm birth in general (<37 weeks of gestation) in pregnancies with identified abnormal markers compared with pregnancies without these markers in a subsequent independent California cohort of screened pregnancies (n = 76,588). RESULTS The final model for early-preterm birth included first-trimester pregnancy-associated plasma protein A in the ≤5th percentile, second-trimester alpha-fetoprotein in the ≥95th percentile, and second-trimester inhibin in the ≥95th percentile (odds ratios, 2.3-3.6). In general, pregnancies in the subsequent cohort with a biomarker pattern that were found to be associated with early-preterm delivery in the first sample were at an increased risk for early-preterm birth and preterm birth in general (<37 weeks of gestation; adjusted RR, 1.6-27.4). Pregnancies with ≥2 biomarker abnormalities were at particularly increased risk (adjusted RR, 3.6-27.4). CONCLUSION When considered across cohorts and in combination, abnormalities in routinely collected biomarkers reveal predictable risks for early-preterm birth.
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Pregnancy disorders leading to very preterm birth influence neonatal outcomes: results of the population-based ACTION cohort study. Pediatr Res 2013; 73:794-801. [PMID: 23493168 DOI: 10.1038/pr.2013.52] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND We examined the relationships between -pregnancy disorders leading to very preterm birth -(spontaneous preterm labor, prelabor premature rupture of -membranes (PPROM), hypertension/preeclampsia, -intrauterine growth restriction (IUGR), antenatal hemorrhage, and maternal -infection), both in isolation and grouped together as -"disorders of placentation" (hypertensive disorders and IUGR) vs. -"presumed infection/inflammation" (all the others), and several unfavorable neonatal outcomes. METHODS We examined a population-based prospective cohort of 2,085 singleton infants of 23-31 wk gestational age (GA) born in six Italian regions (the Accesso alle Cure e Terapie Intensive Ostetriche e Neonatali (ACTION) study). RESULTS Neonates born following disorders of placentation had a higher GA and better overall outcomes than those born following infection/inflammation. After adjustment for GA, however, they showed higher risk of mortality (odds ratio, OR: 1.4; 95% confidence interval, CI: 1.0-2.0), bronchopulmonary dysplasia (BPD) (OR: 2.5; CI: 1.8-3.6), and retinopathy of prematurity (ROP) (OR: 2.0; CI: 1.1-3.5), especially in growth-restricted infants, and a lower risk of intraventricular hemorrhage (IVH) (OR: 0.5; CI: 0.3-0.8) and periventricular leukomalacia (PVL) (OR: 0.6; CI: 0.4-1.1) as compared with infants born following -infection/inflammation disorders. CONCLUSION Our data confirm the hypothesis that, in very preterm infants, adverse outcomes are both a function of immaturity (low GA) and of complications leading to preterm birth. The profile of risk is different in different pregnancy disorders.
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Ferdynus C, Quantin C, Abrahamowicz M, Burguet A, Sagot P, Gouyon JB. Comparison of the ability of alternative birthweight and fetal weight standards to identify preterm newborns at increased risk of perinatal death. BJOG 2013; 120:1456-64. [DOI: 10.1111/1471-0528.12282] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/10/2013] [Indexed: 11/28/2022]
Affiliation(s)
- C Ferdynus
- Centre d'Epidémiologie des Populations; Université de Bourgogne; Dijon France
- Unité de Soutien Méthodologique; University Hospital; Saint Denis de la Réunion France
| | - C Quantin
- CHRU; Service de Biostatistique et d'Informatique Médicale; CHU de Dijon France
- Inserm; U866; Dijon; Université de Bourgogne; Dijon France
| | - M Abrahamowicz
- Department of Epidemiology and Biostatistics; McGill University; Montreal QC Canada
- Department of Biostatistics; Réunion University (France) and CHU de La Reunion; Centre d'Etudes Périnatales de l'Océan Indien; Saint-Pierre Cedex France
| | - A Burguet
- Inserm; CIE1; Dijon France
- CHRU Dijon; Centre d'Investigation Clinique-Epidémiologie Clinique/Essais Cliniques; Dijon France
- Université de Bourgogne; Dijon France
| | - P Sagot
- Centre d'Epidémiologie des Populations; Université de Bourgogne; Dijon France
- Department of Obstetrics and Gynaecology; University Hospital; Dijon France
| | - J-B Gouyon
- Centre d'Epidémiologie des Populations; Université de Bourgogne; Dijon France
- Department of Paediatrics; University Hospital; Dijon France
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Spiegler J, Stichtenoth G, Weichert J, König IR, Schlaud M, V D Wense A, Olbertz D, Gurth H, Schiffmann JH, Bohnhorst B, Gortner L, Herting E, Göpel W. Pregnancy risk factors for very premature delivery: what role do hypertension, obesity and diabetes play? Arch Gynecol Obstet 2013; 288:57-64. [PMID: 23400353 DOI: 10.1007/s00404-013-2739-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 01/21/2013] [Indexed: 12/31/2022]
Abstract
PURPOSE Very premature delivery is a major cause of infant morbidity and mortality. Obesity, diabetes and pregnancy hypertension are known risk factors for pregnancy complications. The study aimed to scrutinize differences of pregnancy complications in a cohort of very premature deliveries compared to a national group. METHODS In a multicenter study performed between January 2009 and December 2010 including 1,577 very low birth weight (VLBW) infants, we compared parental reported pregnancy problems of VLBW infants with a national cohort (KIGGS). We compared reported pregnancy complications to reasons for premature delivery and neonatal outcome within the group of VLBW infants. RESULTS While parents of the national cohort reported pregnancy-induced hypertension in 8 %, parents of VLBW infants reported this complication more frequently (27 %). Mothers of the national cohort were significantly younger (1 year), suffered less from obesity, anaemia, diabetes. Regression analysis showed that hypertension (OR = 5.11) and advanced maternal age (OR = 1.03) increased the risk for premature birth. Women with hypertension were likely to experience a clinically indicated premature delivery, had more VLBW infants with a moderate growth restriction, but less multiples and their infants had less intraventricular haemorrhages grade 3 or 4. Otherwise, neonatal outcome was correlated with gestational age but not with the pregnancy complications diabetes, hypertension or obesity. CONCLUSION Premature birth seems to be correlated to gestational hypertension and associated problems in about ¼ of VLBW infants. Further studies should focus on preventing and treating gestational hypertension to avoid premature delivery and associated neonatal morbidity.
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Affiliation(s)
- Juliane Spiegler
- Department of Pediatrics, University of Lübeck, Ratzeburger Allee 160, 23538 Lüebeck, Germany.
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Jelliffe-Pawlowski LL, Shaw GM, Stevenson DK, Oehlert JW, Quaintance C, Santos AJ, Baer RJ, Currier RJ, O’Brodovich HM, Gould JB. Risk of bronchopulmonary dysplasia by second-trimester maternal serum levels of α-fetoprotein, human chorionic gonadotropin, and unconjugated estriol. Pediatr Res 2012; 71:399-406. [PMID: 22391642 PMCID: PMC3616500 DOI: 10.1038/pr.2011.73] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Although maternal serum α-fetoprotein (AFP), human chorionic gonandotropin (hCG), and estriol play important roles in immunomodulation and immunoregulation during pregnancy, their relationship with the development of bronchopulmonary dysplasia (BPD) in young infants is unknown despite BPD being associated with pre- and postnatal inflammatory factors. RESULTS We found that these serum biomarkers were associated with an increased risk of BPD. Risks were especially high when AFP and/or hCG levels were above the 95th percentile and/or when unconjugated estriol (uE3) levels were below the 5th percentile (relative risks (RRs) 3.1-6.7). Risks increased substantially when two or more biomarker risks were present (RRs 9.9-75.9). DISCUSSION Data suggested that pregnancies that had a biomarker risk and yielded an offspring with BPD were more likely to have other factors present that suggested early intrauterine fetal adaptation to stress, including maternal hypertension and asymmetric growth restriction. METHODS The objective of this population-based study was to examine whether second-trimester levels of AFP, hCG, and uE3 were associated with an increased risk of BPD.
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Affiliation(s)
- Laura L. Jelliffe-Pawlowski
- Genetic Disease Screening Program [L.L.J, R.J.B., R.J.C], California Department of Public Health, Richmond, CA, 94804, USA;
| | - Gary M. Shaw
- Department of Pediatrics [G.M.S., D.K.S, J.W.O., C.Q., A.J.S, H.M.O, J.B.G.], Stanford University School of Medicine, Palo Alto, CA, 94305, USA;
| | - David K. Stevenson
- Department of Pediatrics [G.M.S., D.K.S, J.W.O., C.Q., A.J.S, H.M.O, J.B.G.], Stanford University School of Medicine, Palo Alto, CA, 94305, USA;
| | - John W. Oehlert
- Department of Pediatrics [G.M.S., D.K.S, J.W.O., C.Q., A.J.S, H.M.O, J.B.G.], Stanford University School of Medicine, Palo Alto, CA, 94305, USA;
| | - Cele Quaintance
- Department of Pediatrics [G.M.S., D.K.S, J.W.O., C.Q., A.J.S, H.M.O, J.B.G.], Stanford University School of Medicine, Palo Alto, CA, 94305, USA;
| | - Allan J. Santos
- Department of Pediatrics [G.M.S., D.K.S, J.W.O., C.Q., A.J.S, H.M.O, J.B.G.], Stanford University School of Medicine, Palo Alto, CA, 94305, USA;
| | - Rebecca J. Baer
- Genetic Disease Screening Program [L.L.J, R.J.B., R.J.C], California Department of Public Health, Richmond, CA, 94804, USA;
| | - Robert J. Currier
- Genetic Disease Screening Program [L.L.J, R.J.B., R.J.C], California Department of Public Health, Richmond, CA, 94804, USA;
| | - Hugh M. O’Brodovich
- Department of Pediatrics [G.M.S., D.K.S, J.W.O., C.Q., A.J.S, H.M.O, J.B.G.], Stanford University School of Medicine, Palo Alto, CA, 94305, USA;
| | - Jeffrey B. Gould
- Department of Pediatrics [G.M.S., D.K.S, J.W.O., C.Q., A.J.S, H.M.O, J.B.G.], Stanford University School of Medicine, Palo Alto, CA, 94305, USA;
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Lautridou A, Ancel PY, Launay E, Denizot S, Orsonneau JL, Roze JC, Gras-Le Guen C. Umbilical cord blood procalcitonin as a risk factor for mortality in very premature infants. Eur J Clin Microbiol Infect Dis 2012; 31:2407-12. [PMID: 22382822 DOI: 10.1007/s10096-012-1583-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Accepted: 02/04/2012] [Indexed: 10/28/2022]
Abstract
Fetal inflammatory response syndrome is implicated as a cause of fetal or neonatal injury. We analyzed the relationship between the procalcitonin umbilical cord blood level and neonatal outcome. A total of 237 preterms born in a level III perinatal medicine unit of a French university hospital were enrolled in a prospective observational study. Measurement of the procalcitonin umbilical cord blood level was performed at birth. After hospitalization, surviving infants were enrolled in the regional follow-up program. Outcome data were recorded on standardized questionnaires. The main outcome measures were neonatal mortality and impaired functional outcome at 2 years of corrected age. The terciles of procalcitonin levels were calculated. Preterm infants of the third tercile were defined as infants with elevated procalcitonin. Among the 237 infants, 13 (5.5%) died during the neonatal period, 20 (8.4%) were lost to follow-up, and 31 (13.1%) were classified as having an impaired functional outcome. After adjustment, elevated cord blood procalcitonin (>0.33 ng/ml) was significantly associated with an increase in mortality (adjusted odds ratio [aOR] = 8.3 [1.4-48]; p = 0.018), but not with the 2-year impaired functional outcome (aOR = 1.0 [0.4-2.5]; p = 0.93). Elevated umbilical blood cord procalcitonin concentration is an independent risk factor of mortality in preterm infants at less than 33 weeks' gestation.
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Affiliation(s)
- A Lautridou
- Departement de Périnatologie, Hôpital Mère-Enfant, CHU de Nantes, Nantes, France
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Tsitouras V, Sgouros S. Infantile posthemorrhagic hydrocephalus. Childs Nerv Syst 2011; 27:1595-608. [PMID: 21928026 DOI: 10.1007/s00381-011-1521-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Accepted: 06/28/2011] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Intraventricular/germinal matrix hemorrhage affects 7-30% of premature neonates, 25-80% of whom (depending on the grade of the hemorrhage) will develop hydrocephalus requiring shunting. Predisposing factors are low birth weight and gestational age. MATERIAL There is increasing evidence for the role of TGF-β1 in the pathogenesis of hydrocephalus, but attempts to develop treatment modalities to clear the cerebrospinal fluid (CSF) from blood degradation products have not succeeded so far. Ultrasound is a valuable screening tool for high-risk infants and magnetic resonance imaging is increasingly utilized to differentiate progressive hydrocephalus from ex vacuo ventriculomegaly, evaluate periventricular parenchymal damage, decide on the surgical treatment of hydrocephalus, and follow up these patients in the long term. Treatment of increasing ventriculomegaly and intracranial hypertension in the presence of hemorrhagic CSF can involve a variety of strategies, all with relative drawbacks, aiming to drain the CSF while gaining time for it to clear and the neonate to reach term and become a suitable candidate for shunting. Eventually, patients with progressive ventriculomegaly causing intracranial hypertension, who have reached term and their CSF has cleared from blood products, will need shunting. CONCLUSION Cognitive long-term outcome is influenced more by the effect of the initial hemorrhage and other perinatal events and less by hydrocephalus, provided that this has been addressed timely in the early postnatal period. Shunting can have many long-term side effects due to mechanical complications and overdrainage. In particular, patients with posthemorrhagic hydrocephalus are more susceptible to multiloculated hydrocephalus and encysted fourth ventricle, both of which are challenging to treat.
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Affiliation(s)
- Vasilios Tsitouras
- Department of Neurosurgery, Mitera Childrens Hospital, Erythrou Stavrou 6, Marousi, 151 23 Athens, Greece
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Catteau J, Gernet JI, Marret S, Legros H, Gressens P, Leroux P, Laudenbach V. Effects of antenatal uteroplacental hypoperfusion on neonatal microvascularisation and excitotoxin sensitivity in mice. Pediatr Res 2011; 70:229-35. [PMID: 21587098 DOI: 10.1203/pdr.0b013e318224285f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Vascular intrauterine growth restriction (IUGR) occurs in about 5% of pregnancies and may reduce the incidence of periventricular leukomalacia in preterm newborns. We evaluated neonatal excitotoxicity in a murine model of vascular IUGR involving unilateral uterine ligation on embryonic day (E)13.5. Birth weight was significantly decreased in the ligation group compared with the sham group (p < 0.001). VEGFs, VEGF receptors (VEGFRs), and NMDA receptor subunit mRNAs in brain extracts were assayed using quantitative RT-PCR. Ligation was associated with increased mRNAs for the vascular marker PECAM-1 on postnatal day (PD)2 and VEGFR-3 on PD2 and PD10, contrasting with decreased VEGFA and VEGFC on PD10. Microvessel density was increased on PD7. Ligated and sham pups received intracerebral ibotenate (NMDA agonist) on PD2 or PD10. Cortical and white matter (WM) lesions after 5 d were reduced in ligated versus sham pups injected on PD2 (p < 0.001 and p < 0.01, respectively); this effect persisted on PD42 (p < 0.01 and p < 0.05, respectively). With ibotenate on PD10, lesions were exacerbated after 5 d in the ligated group in the cortex (p < 0.05) and WM (p < 0.05) and on PD42 in the cortex (p < 0.05). In conclusion, vascular IUGR offered only transient protection against neonatal excitotoxic lesions, possibly via angiogenesis.
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Affiliation(s)
- Julie Catteau
- Normandy-Rouen University Institute for Biomedical Research, IFRMP23, 76183 Rouen, France
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Yu HJ, Kim ES, Kim JK, Yoo HS, Ahn SY, Chang YS, Park WS. Outcomes of small for gestational age micropremies depending on how young or how small they are. KOREAN JOURNAL OF PEDIATRICS 2011; 54:246-52. [PMID: 21949519 PMCID: PMC3174360 DOI: 10.3345/kjp.2011.54.6.246] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Revised: 12/10/2010] [Accepted: 02/15/2011] [Indexed: 12/02/2022]
Abstract
Purpose The outcomes of small for gestational age (SGA) infants especially in extremely low birth weight infants (ELBWIs) are controversial. This study evaluated the mortality and morbidity of ELBWIs, focusing on whether or not they were also SGA. Methods The medical records of 415 ELBWIs (birth weight <1,000 g), who were inborn and admitted to the Samsung Medical Center neonatal intensive care unit from January 2000 to December 2008, were reviewed retrospectively. Mortality and morbidities were compared by body size groups: very SGA (VSGA), birth weight ≤3rd percentile; SGA, 3rd to 10th percentile; and appropriate for gestational age (AGA) infants, >10th percentile for gestational age. For gestational subgroup analysis, groups were divided into infants with gestational age ≤24+6 weeks (subgroup I), 25+0 to 26+6 weeks (subgroup II), and ≥27+0 weeks (subgroup III). Results Gestational age was 29+2±2+6 weeks in the VSGA infants (n=49), 27+5±2+2 weeks in the SGA infants (n=45), and 25+4±1+4 weeks in AGA infants (n=321). Birth weight was 692±186.6 g, 768±132.9 g, and 780±142.5 g in the VSGA, SGA, and AGA groups, respectively. Cesarean section rate and maternal pregnancy-induced hypertension were more common in the VSGA and SGA than in AGA pregnancies. However, chorioamnionitis was more common in the AGA group. The mortalities of the lowest gestational group (subgroup I), and also of the lower gestational group (subgroup I+II) were significantly higher in the VSGA group than the SGA or AGA groups (P=0.020 and P=0.012, respectively). VSGA and SGA infants showed lower incidence in respiratory distress syndrome, ductal ligation, bronchopulmonary dysplasia, intraventricular hemorrhage than AGA group did. However, by multiple logistic regression analysis of each gestational subgroup, the differences were not significant. Conclusion Of ELBWIs, extremely SGA in the lower gestational subgroups, had an impact on mortality, which may provide information useful for prenatal counseling.
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Affiliation(s)
- Hee Joon Yu
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Giapros V, Drougia A, Krallis N, Theocharis P, Andronikou S. Morbidity and mortality patterns in small-for-gestational age infants born preterm. J Matern Fetal Neonatal Med 2011; 25:153-7. [PMID: 21463210 DOI: 10.3109/14767058.2011.565837] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Small-for-gestational age (SGA) neonates born prematurely may be at higher risk for adverse effects during the early postnatal period than premature neonates born appropriate for gestational age (AGA).This study aims to study comparatively morbidity and mortality in SGA and AGA neonates born with low gestational age (GA). METHODS The study population included all preterm infants born alive with GA 24-31 weeks in Northwestern Greece during a 9-year period and hospitalized in the regional neonatal intensive care unit (NICU). The association of SGA status with neonatal death, and with chronic lung disease (CLD), intraventricular haemorrhage (IVH), retinopathy of prematurity (ROP), necrotizing enterocolitis (NEC), respiratory distress syndrome (RDS), patent ductus arteriosus (PDA), and sepsis was assessed, using multiple logistic regression analysis. RESULTS Of 210 infants without congenital anomalies born at GA 24-31 weeks, 51 were SGA and 159 were AGA. CLD was more common in SGA than in AGA neonates (57.1% vs 29.3%, p < 0.05), but no differences were found in the rates of IVH, NEC, ROP, RDS, and sepsis. The mortality rate in the SGA group was 33.3% vs 17% in the AGA group (p < 0.01), and in the subgroups 28-31 weeks 24.1% vs 6.3%, respectively, (p < 0.01). In logistic regression analysis, SGA status was strongly associated with increased mortality and CLD, independent of confounding factors [odd ratios and confidence intervals: 3.4 (CI: 1.8-10.6) p = 0.03 and 3.9 (CI: 1.7-11.5) p < 0.01, respectively. CONCLUSIONS SGA neonates with GA 24-31 weeks were at increased risk of development of CLD and of neonatal death compared with AGA neonates of the same GA.
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Affiliation(s)
- Vasileios Giapros
- Neonatal Intensive Care Unit, University Hospital of Ioannina, Ioannina, Greece.
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Zeitlin J, El Ayoubi M, Jarreau PH, Draper ES, Blondel B, Künzel W, Cuttini M, Kaminski M, Gortner L, Van Reempts P, Kollée L, Papiernik E. Impact of fetal growth restriction on mortality and morbidity in a very preterm birth cohort. J Pediatr 2010; 157:733-9.e1. [PMID: 20955846 DOI: 10.1016/j.jpeds.2010.05.002] [Citation(s) in RCA: 147] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Revised: 04/12/2010] [Accepted: 05/03/2010] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To assess the impact of being small for gestational age (SGA) on very preterm mortality and morbidity rates by using different birthweight percentile thresholds and whether these effects differ by the cause of the preterm birth. STUDY DESIGN The study included singletons and twins alive at onset of labor between 24 and 31 weeks of gestation without congenital anomalies from the Models of Organising Access to Intensive Care for very preterm births very preterm cohort in 10 European regions in 2003 (n = 4525). Outcomes were mortality, intraventricular hemorrhage grade III and IV, cystic periventricular leukomalacia, and bronchopulmonary dysplasia (BPD). Birthweight percentiles in 6 classes were analyzed by pregnancy complication. RESULTS The mortality rate was higher for infants with birthweights <25th percentile when compared with the 50th to 74th percentile (adjusted odds ratio, 3.98 [95% CI, 2.79-5.67] for <10th; adjusted odds ratio, 2.15 [95% CI, 1.54-3.00] for 10th-24th). BPD declined continuously with increasing birthweight. There was no association for periventricular leukomalacia or intraventricular hemorrhage. Seventy-five percent of infants with birthweights <10th percentile were from pregnancies complicated by hypertension or indicated deliveries associated with growth restriction. However, stratifying for pregnancy complications yielded similar risk patterns. CONCLUSIONS A 25th percentile cutoff point was a means of identifying infants at higher risk of death and a continuous measure better described risks of BPD. Lower birthweights were associated with poor outcomes regardless of pregnancy complications.
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Affiliation(s)
- Jennifer Zeitlin
- INSERM, UMR S953, IFR 69, Epidemiological Research Unit on Perinatal Health and Women's and Children's Health, UPMC Université Paris, Paris, France.
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Dani C, Poggi C, Bertini G, Pratesi S, Di Tommaso M, Scarselli G, Rubaltelli FF. Method of delivery and intraventricular haemorrhage in extremely preterm infants. J Matern Fetal Neonatal Med 2010; 23:1419-23. [PMID: 20236026 DOI: 10.3109/14767051003678218] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES It has been reported that caesarean delivery (CD) protects against intraventricular haemorrhage (IVH) in the extremely preterm infant, but it is not known whether this effect involve the more severe grades of IVH. Thus, our aim was to confirm the correlation between the occurrence of IVH and the mode of delivery, and to evaluate this correlation for each grade of IVH. METHODS All infants with gestational age (GA) ≤ 28 weeks admitted to the neonatal intensive care unit of a tertiary hospital were studied for each grade IVH and major complications rate. RESULT We found that vaginally born infants had a higher rate of each grade of IVH, but the increase was statistically significant only for grade 3 IVH (18% vs. 2%, p < 0.0001) and all grades IVH (45% vs. 20%, p < 0.0001). Multivariate analysis demonstrated that CD (RR: 0.42, 95% CI 0.28-0.63), birth weight ≥ 800 g (RR: 0.48, 95% CI 0.32-0.73), 27-28 weeks of GA (RR: 0.38, 95% CI 0.25-0.60) and antenatal steroids (0.66, 95% CI 0.22-0.46) decrease independently the risk of developing IVH. CONCLUSIONS Our study demonstrates that CD decreases the risk of developing IVH in extremely preterm infants including the most severe grades of IVH.
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Affiliation(s)
- Carlo Dani
- Section of Neonatology, Department of Surgical and Medical Critical Care, Careggi University Hospital of Florence, Florence, Italy.
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Gagliardi L, Bellù R, Zanini R, Dammann O. Bronchopulmonary dysplasia and brain white matter damage in the preterm infant: a complex relationship. Paediatr Perinat Epidemiol 2009; 23:582-90. [PMID: 19840295 DOI: 10.1111/j.1365-3016.2009.01069.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We analysed the relationship between bronchopulmonary dysplasia (BPD) and brain white matter damage (WMD) in very preterm infants, adjusting for common risk factors and confounders. We studied a cohort of infants <32 weeks gestational age (GA) and <1500 g, admitted to 12 hospitals in Northern Italy in 1999-2002. The association between BPD and WMD was estimated by generalised estimating equations and conditional logistic models, adjusting for centre, GA, propensity score for prolonged ventilation and other potential confounders. Directed acyclic graphs (DAG) were used to depict the underlying causal structure and guide analysis. Of the 1209 infants reaching 36 weeks, 192 (15.8%) developed BPD (supplemental oxygen at 36 weeks) and 88 (7.3%) ultrasound-defined WMD (cystic periventricular leukomalacia). In crude analysis, BPD was a strong risk factor for WMD [odds ratio (OR) = 5.9]. With successive adjustments, the OR progressively decreased to 3.88 when adjusting for GA, to 2.72 adding perinatal risk factors, and further down to 2.16 [95% confidence interval 1.1, 3.9] when ventilation was also adjusted for. Postnatal factors did not change the OR. Significant risk factors for WMD, in addition to BPD, were a low GA, a lower Apgar score, a higher illness severity score, ventilation and early-onset sepsis, while antenatal steroids, being small for GA, and surfactant were associated with a reduced risk. In conclusion, our data suggest that BPD is associated with an increased risk of WMD; most of the effect is due to shared risk factors and causal pathways. DAGs helped clarify the complex confounding of this scenario.
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Affiliation(s)
- Luigi Gagliardi
- Division of Paediatrics and Neonatology, Ospedale Versilia, Via Aurelia 335, I-55043 Lido di Camaiore (LU), Italy.
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Abstract
Preterm birth can be caused by intrauterine infection and maternal/fetal inflammatory responses. Maternal inflammation (chorioamnionitis) is often followed by a systemic fetal inflammatory response characterized by elevated levels of proinflammatory cytokines in the fetal circulation. The inflammation signal is likely transmitted across the blood-brain barrier and initiates a neuroinflammatory response. Microglial activation has a central role in this process and triggers excitotoxic, inflammatory, and oxidative damage in the developing brain. Neuroinflammation can persist over a period of time and sensitize the brain to subinjurious insults in early and chronic phases but may offer relative tolerance in the intermediate period through activation of endogenous anti-inflammatory, protective, and repair mechanisms. Neuroinflammatory injury not only destroys what exists but also changes what develops.
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Affiliation(s)
- Shadi Malaeb
- Division of Newborn Medicine, Floating Hospital for Children, Tufts Medical Center, Boston, Massachusetts 02111, USA.
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Spinillo A, Montanari L, Gardella B, Roccio M, Stronati M, Fazzi E. Infant sex, obstetric risk factors, and 2-year neurodevelopmental outcome among preterm infants. Dev Med Child Neurol 2009; 51:518-25. [PMID: 19416336 DOI: 10.1111/j.1469-8749.2009.03273.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM To evaluate the effect of the interaction between fetal sex and obstetric variables on the risk of neurodevelopmental impairment among preterm infants. METHOD A cohort study of 394 male and 360 female surviving infants born at 24 to 33 completed weeks of gestational age. Neurological examination and cognitive assessment of the infants (Bayley Scales of Infant Development) were performed at 2 years corrected age. RESULTS Mean gestational age was 30.4 weeks (SD 2.4). Rates of mild and moderate-to-severe neurodevelopmental impairment were 14.6% (110/754) and 7% (53/754) respectively. In logistic analysis, male sex was associated with an increased risk of neurodevelopmental impairment (odds ratio 1.8, 95% confidence interval 1.21-2.68) compared with females. The excess risk of neurodevelopmental impairment associated with male sex was higher among preeclamptic than normotensive pregnancies (p for interaction=0.004), among infants who were either small for gestational age or delivered to a mother with preeclampsia (p for interaction=0.001) and in iatrogenic as opposed to spontaneous preterm birth or preterm premature rupture of membranes (p for interaction=0.035). INTERPRETATION The excess risk of neurodevelopmental impairment associated with male sex among preterm infants is modulated by obstetric risk factors.
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Affiliation(s)
- Arsenio Spinillo
- University of Pavia, Department of Obstetrics and Gynecology, IRCCS Fondazione Policlinico San Matteo, P le Golgi, 25, Pavia 27100, Italy.
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Bauer M, Fast C, Haas J, Resch B, Lang U, Pertl B. Cystic periventricular leukomalacia in preterm infants: an analysis of obstetric risk factors. Early Hum Dev 2009; 85:163-9. [PMID: 18783900 DOI: 10.1016/j.earlhumdev.2008.07.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2008] [Revised: 07/22/2008] [Accepted: 07/22/2008] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To identify obstetric risk factors and to elucidate the effect of prolonged rupture of the membranes on the development of cystic periventricular leukomalacia (PVL) in preterm infants. METHODS A retrospective case-control study of 95 preterm infants with the diagnosis of PVL and 245 healthy controls matched for gestational age. A total of 52 antenatal, intrapartum and neonatal characteristics were studied by univariate methods and logistic regression. RESULTS Preterm premature rupture of membranes (PPROM) (odds ratio 2.1 [95% CI 1.3-3.4], P=.003), gestational age at PPROM (P=.025), prolonged rupture of membranes (P<.0001), administration of tocolytic agents (1.8 [1.1-3.0], P=.019) and antibiotics (1.9 [1.2-3.1], P=.008) were associated with PVL. The use of tocolytic agents >24 h (P=.008), prolonged latency between the increase in maternal leukocyte count and birth (P=.034), spontaneous onset of labor (1.8 [1.0-2.9], P=.026), vaginal delivery (1.7 [1.1-2.8], P=.029) and male gender (1.5 [1.0-2.0], P=.04) were found more frequently in PVL cases. Preeclampsia (0.4 [0.1-0.9], P=.034), hypertension at booking (P=.009), sonographic IUGR (P=.020), abnormal blood flow of the umbilical artery (P=.032) and cesarean section without labor (0.5 [0.3-0.8], P=.006) were found less frequently. In logistic regression analysis, prolonged rupture of the membranes (P=.748), preeclampsia (P=.973), the use of antibiotics (P=.617) and beta-sympathomimetic tocolytic agents (P=.563) lost statistical significance, whereas birth weight (P=.036) became significant. CONCLUSION PPROM and prolonged rupture of the membranes may provoke adverse effects on the neurodevelopmental outcome of the preterm fetus. These findings may have implications on the obstetric management of PPROM beyond 30 weeks of gestation. Cesarean section without labor was less likely associated with the diagnosis of PVL.
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Affiliation(s)
- Margit Bauer
- Department of Obstetrics and Gynecology, Medical University Graz, Graz, Austria.
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Ferdynus C, Quantin C, Abrahamowicz M, Platt R, Burguet A, Sagot P, Binquet C, Gouyon JB. Can birth weight standards based on healthy populations improve the identification of small-for-gestational-age newborns at risk of adverse neonatal outcomes? Pediatrics 2009; 123:723-30. [PMID: 19171644 DOI: 10.1542/peds.2007-2564] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES To develop neonatal growth standards based on (1) the entire population of live births and (2) a healthy subpopulation and compare them in identifying infants as small for gestational age and at risk of adverse neonatal outcomes. PATIENTS AND METHODS We included all births, between 28 and 41 weeks of gestation, reported in Burgundy (France) from 2000 to 2006. Fetal deaths, multiple births, and chromosomal aberrations were excluded. We first estimated separate birth weight distributions at each week of gestation for (1) all neonates and (2) only infants born from women without maternal diseases. Small for gestational age was defined as a birth weight below the 10th percentile of the corresponding standard. We assessed the associations of small for gestational age on the basis of the alternative definitions, with mortality and major neonatal outcomes. RESULTS We included 127 584 live births. For term newborns, small for gestational age was significantly associated with an increased risk of death with both standards. In contrast, for preterm newborns (32-36 weeks), small for gestational age was not significantly associated with mortality and morbidity. Very preterm infants (28-31 weeks) identified as small for gestational age according to the healthy-population standard were at higher risk of chronic lung disease and intraventricular hemorrhage. When using the entire-population standard, small for gestational age was associated with chronic lung disease but not intraventricular hemorrhage. The area under the receiver operating characteristic for predicting an intraventricular hemorrhage was significantly greater for small for gestational age defined with the healthy-population standard compared with small for gestational age classified with the entire-population standard. CONCLUSIONS Neonatal growth standards based on healthy populations could improve the identification of very preterm neonates as small for gestational age and at risk of intraventricular hemorrhage.
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Affiliation(s)
- Cyril Ferdynus
- Cellule d'Evaluation du Réseau Périnatal de Bourgogne, 1 Boulevard Jeanne d'Arc, B P-77908, 21079 Dijon Cedex, France.
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48
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McCrea HJ, Ment LR. The diagnosis, management, and postnatal prevention of intraventricular hemorrhage in the preterm neonate. Clin Perinatol 2008; 35:777-92, vii. [PMID: 19026340 PMCID: PMC2901530 DOI: 10.1016/j.clp.2008.07.014] [Citation(s) in RCA: 152] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Intraventricular hemorrhage (IVH) occurs in 20% to 25% of very low birthweight preterm neonates and may be associated with significant sequelae. Infants who have IVH are at risk for posthemorrhagic hydrocephalus and periventricular leukomalacia; as many as 75% of those who have parenchymal involvement of hemorrhage suffer significant neurodevelopmental disability. Because of the prevalence of IVH and the medical and societal impact of this disease, many postnatal pharmacologic prevention strategies have been explored. Randomized clinical prevention trials should provide long-term neurodevelopmental follow-up to assess the impact of preterm birth, injury, and pharmacologic intervention on the developing brain.
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Affiliation(s)
| | - Laura R. Ment
- Departments of Pediatrics and Neurology, and Associate Dean for Admissions, Yale University School of Medicine, New Haven, CT
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Porreco RP, Heyborne KD, Shapiro H. Amniocentesis in the management of preterm premature rupture of the membranes: a retrospective cohort analysis. J Matern Fetal Neonatal Med 2008; 21:573-9. [PMID: 18609359 DOI: 10.1080/14767050802178011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE This retrospective analysis determined the utility of amniocentesis in the management of preterm premature rupture of the membranes (PPROM). STUDY DESIGN Consecutive patients with PPROM were managed with and without amniocentesis. Both groups received antibiotics and corticosteroids; tocolytics were withheld. Patients were induced if clinical or amniotic fluid (AF) proven chorioamnionitis occurred or gestational age goals were reached. Primary endpoints were individual and composite neonatal morbidity (CNM). RESULTS One hundred forty-seven maternal patients were managed with amniocentesis (AC) and 146 were managed without amniocentesis (NAC). CNM was significantly reduced in the group managed with AC (OR 2.94, 95% CI 1.68-5.15, NAC vs. AC). NAC patients had similar rates of neonatal sepsis as well as CNM to those patients in the AC group with positive AF Gram stains and/or cultures. CONCLUSIONS Patients with PPROM who are managed with AC have significantly less CNM than NAC patients.
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Affiliation(s)
- Richard P Porreco
- Presbyterian/St Luke's Medical Center, Obstetrix Medical Group of Colorado, Denver, Colorado 80218, USA.
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Nitta A, Suzumura H, Kano K, Arisaka O. Congenital cystic periventricular leukomalacia in a small-for-gestational age full-term infant. Pediatr Int 2008; 50:696-7. [PMID: 19261123 DOI: 10.1111/j.1442-200x.2008.02715.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Akihisa Nitta
- Department of Pediatrics, Dokkyo Medical University, School of Medicine, Mibu, Tochigi, Japan.
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