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Prial J, El-Shibiny H, El-Dib M, Benjamin J, Erdei C, Dodrill P, Szakmar E, Bell KA. Growth trajectories and need for oral feeding support among infants with neonatal encephalopathy treated with therapeutic hypothermia. J Perinatol 2024; 44:1163-1171. [PMID: 38702507 DOI: 10.1038/s41372-024-01983-7] [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: 07/29/2023] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 05/06/2024]
Abstract
OBJECTIVE Identify feeding supports required among infants with neonatal encephalopathy and determine growth trajectories to 3 years. STUDY DESIGN Single-center retrospective cohort study of 120 infants undergoing therapeutic hypothermia. Logistic regression and stratified analyses identified whether clinical factors, EEG-determined encephalopathy severity, and MRI-based brain injury predict feeding supports (nasogastric tube, oral feeding compensations) and growth. RESULTS 50.8% of infants required feeding supports in the hospital, decreasing to 14% at discharge. Moderate-to-severe encephalopathy and basal ganglia injury predicted feeding support needs. Yet, 35% of mildly encephalopathic infants required gavage tubes. Growth trajectories approximated expected growth of healthy infants. CONCLUSION Infants with neonatal encephalopathy-even if mild-frequently experience feeding difficulties during initial hospitalization. With support, most achieve full oral feeds by discharge and adequate early childhood growth. Clinical factors may help identify infants requiring feeding support, but do not detect all at-risk infants, supporting routine screening of this high-risk population.
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Affiliation(s)
- Jennifer Prial
- Division of Newborn Medicine, Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, USA
| | - Hoda El-Shibiny
- Division of Newborn Medicine, Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, USA
| | - Mohamed El-Dib
- Division of Newborn Medicine, Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Jennifer Benjamin
- Division of Newborn Medicine, Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Carmina Erdei
- Division of Newborn Medicine, Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Pamela Dodrill
- Division of Newborn Medicine, Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Eniko Szakmar
- Division of Newborn Medicine, Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, USA
- Division of Neonatology, Pediatric Center, Semmelweis University, Budapest, Hungary
| | - Katherine A Bell
- Division of Newborn Medicine, Department of Pediatrics, Brigham and Women's Hospital, Boston, MA, USA.
- Harvard Medical School, Boston, MA, USA.
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Garegrat R, Montaldo P, Burgod C, Pant S, Mazlan M, Palanisami B, Chakkarapani E, Woolfall K, Johnson S, Grant PE, Land S, Mahmoud M, Brady T, Cornelius V, Adams E, Dorling J, Aladangadi N, Fleming P, Pressler R, Shennan A, Petrou S, Soe A, Basset P, Shankaran S, Thayyil S. Whole-body hypothermia in mild neonatal encephalopathy: protocol for a multicentre phase III randomised controlled trial. BMC Pediatr 2024; 24:460. [PMID: 39026197 PMCID: PMC11256637 DOI: 10.1186/s12887-024-04935-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Accepted: 07/08/2024] [Indexed: 07/20/2024] Open
Abstract
BACKGROUND Mild hypoxic ischemic encephalopathy is associated with sub optimal cognition and learning difficulties at school age. Although whole-body hypothermia reduces death and disability after moderate or severe encephalopathy in high-income countries, the safety and efficacy of hypothermia in mild encephalopathy is not known. The cooling in mild encephalopathy (COMET) trial will examine if whole-body hypothermia improves cognitive development of neonates with mild encephalopathy. METHODS The COMET trial is a phase III multicentre open label two-arm randomised controlled trial with masked outcome assessments. A total of 426 neonates with mild encephalopathy will be recruited from 50 to 60 NHS hospitals over 2 ½ years following parental consent. The neonates will be randomised to 72 h of whole-body hypothermia (33.5 ± 0.5 C) or normothermia (37.0 ± 0.5 C) within six hours or age. Prior to the recruitment front line clinical staff will be trained and certified on expanded modified Sarnat staging for encephalopathy. The neurological assessment of all screened and recruited cases will be video recorded and centrally assessed for quality assurance. If recruitment occurs at a non-cooling centre, neonates in both arms will be transferred to a cooling centre for continued care, after randomisation. All neonates will have continuous amplitude integrated electroencephalography (aEEG) at least for the first 48 h to monitor for seizures. Predefined safety outcomes will be documented, and data collected to assess resource utilization of health care. A central team masked to trial group allocation will assess neurodevelopmental outcomes at 2 years of age. The primary outcome is mean difference in composite cognitive scores on Bayley scales of Infant and Toddler development 4th Edition. DISCUSSION The COMET trial will establish the safety and efficacy of whole-body hypothermia for mild hypoxic ischaemic encephalopathy and inform national and international guidelines in high income countries. It will also provide an economic assessment of whole-body hypothermia therapy for mild encephalopathy in the NHS on cost-effectiveness grounds. TRIAL REGISTRATION NUMBER NCT05889507 June 5, 2023.
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Affiliation(s)
- Reema Garegrat
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, Du Cane Road, London, W12 0HS, England.
| | - Paolo Montaldo
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, Du Cane Road, London, W12 0HS, England
- Department of Woman, Child, and General and Specialized Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Constance Burgod
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, Du Cane Road, London, W12 0HS, England
| | - Stuti Pant
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, Du Cane Road, London, W12 0HS, England
| | - Munirah Mazlan
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, Du Cane Road, London, W12 0HS, England
| | | | - Ela Chakkarapani
- University of Bristol and St Michaels Hospital NHS Trust, Bristol, UK
| | - Kerry Woolfall
- Public Health, Policy and Systems, University of Liverpool, Liverpool, UK
| | - Samantha Johnson
- Department of Population Health Sciences, University of Leicester, Leicester, UK
| | - Patricia Ellen Grant
- Departments of Radiology and Pediatrics, Boston Children,s Hospital, Harvard Medical School, Boston, USA
| | | | | | | | | | - Eleri Adams
- Neonatal Medicine, John Radcliffe Hospital NHS Trust, London, UK
| | - Jon Dorling
- Neonatal Medicine, University Hospital Southampton NHS Trust, London, UK
| | | | - Paul Fleming
- Neonatal Medicine, Homerton Healthcare NHS Foundation Trust, London, UK
| | - Ronit Pressler
- Department of Neurophysiology, Great Ormond Street Hospital, London, UK
| | - Andrew Shennan
- Department of Obstetrics, Kings College London, London, UK
| | - Stavros Petrou
- Professor of Health Economics, University of Oxford, Oxford, UK
| | - Aung Soe
- Oliver Fisher Neonatal Intensive Care Unit, Medway Maritime Hospital, Medway NHS Foundation Trust, Kent, UK
| | | | - Seetha Shankaran
- Department of Neonatal-Perinatal Medicine, Wayne State University, Detroit, MI, USA
- University of Texas at Austin, Dell Children's Hospital, Austin, USA
| | - Sudhin Thayyil
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, Du Cane Road, London, W12 0HS, England
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Montaldo P, Cirillo M, Burgod C, Caredda E, Ascione S, Carpentieri M, Puzone S, D’Amico A, Garegrat R, Lanza M, Moreno Morales M, Atreja G, Shivamurthappa V, Kariholu U, Aladangady N, Fleming P, Mathews A, Palanisami B, Windrow J, Harvey K, Soe A, Pattnayak S, Sashikumar P, Harigopal S, Pressler R, Wilson M, De Vita E, Shankaran S, Thayyil S. Whole-Body Hypothermia vs Targeted Normothermia for Neonates With Mild Encephalopathy: A Multicenter Pilot Randomized Clinical Trial. JAMA Netw Open 2024; 7:e249119. [PMID: 38709535 PMCID: PMC11074808 DOI: 10.1001/jamanetworkopen.2024.9119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 02/22/2024] [Indexed: 05/07/2024] Open
Abstract
Importance Although whole-body hypothermia is widely used after mild neonatal hypoxic-ischemic encephalopathy (HIE), safety and efficacy have not been evaluated in randomized clinical trials (RCTs), to our knowledge. Objective To examine the effect of 48 and 72 hours of whole-body hypothermia after mild HIE on cerebral magnetic resonance (MR) biomarkers. Design, Setting, and Participants This open-label, 3-arm RCT was conducted between October 31, 2019, and April 28, 2023, with masked outcome analysis. Participants were neonates at 6 tertiary neonatal intensive care units in the UK and Italy born at or after 36 weeks' gestation with severe birth acidosis, requiring continued resuscitation, or with an Apgar score less than 6 at 10 minutes after birth and with evidence of mild HIE on modified Sarnat staging. Statistical analysis was per intention to treat. Interventions Random allocation to 1 of 3 groups (1:1:1) based on age: neonates younger than 6 hours were randomized to normothermia or 72-hour hypothermia (33.5 °C), and those 6 hours or older and already receiving whole-body hypothermia were randomized to rewarming after 48 or 72 hours of hypothermia. Main Outcomes and Measures Thalamic N-acetyl aspartate (NAA) concentration (mmol/kg wet weight), assessed by cerebral MR imaging and thalamic spectroscopy between 4 and 7 days after birth using harmonized sequences. Results Of 225 eligible neonates, 101 were recruited (54 males [53.5%]); 48 (47.5%) were younger than 6 hours and 53 (52.5%) were 6 hours or older at randomization. Mean (SD) gestational age and birth weight were 39.5 (1.1) weeks and 3378 (380) grams in the normothermia group (n = 34), 38.7 (0.5) weeks and 3017 (338) grams in the 48-hour hypothermia group (n = 31), and 39.0 (1.1) weeks and 3293 (252) grams in the 72-hour hypothermia group (n = 36). More neonates in the 48-hour (14 of 31 [45.2%]) and 72-hour (13 of 36 [36.1%]) groups required intubation at birth than in the normothermic group (3 of 34 [8.8%]). Ninety-nine neonates (98.0%) had MR imaging data and 87 (86.1%), NAA data. Injury scores on conventional MR biomarkers were similar across groups. The mean (SD) NAA level in the normothermia group was 10.98 (0.92) mmol/kg wet weight vs 8.36 (1.23) mmol/kg wet weight (mean difference [MD], -2.62 [95% CI, -3.34 to -1.89] mmol/kg wet weight) in the 48-hour and 9.02 (1.79) mmol/kg wet weight (MD, -1.96 [95% CI, -2.66 to -1.26] mmol/kg wet weight) in the 72-hour hypothermia group. Seizures occurred beyond 6 hours after birth in 4 neonates: 1 (2.9%) in the normothermia group, 1 (3.2%) in the 48-hour hypothermia group, and 2 (5.6%) in the 72-hour hypothermia group. Conclusions and Relevance In this pilot RCT, whole-body hypothermia did not improve cerebral MR biomarkers after mild HIE, although neonates in the hypothermia groups were sicker at baseline. Safety and efficacy of whole-body hypothermia should be evaluated in RCTs. Trial Registration ClinicalTrials.gov Identifier: NCT03409770.
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Affiliation(s)
- Paolo Montaldo
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, United Kingdom
- Department of Woman, Child, and General and Specialized Surgery, University of Campania “Luigi Vanvitelli,” Naples, Italy
| | - Mario Cirillo
- Department of Advanced Medical and Surgical Sciences, MRI Research Center, University of Campania “Luigi Vanvitelli,” Naples, Italy
| | - Constance Burgod
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, United Kingdom
| | - Elisabetta Caredda
- Department of Woman, Child, and General and Specialized Surgery, University of Campania “Luigi Vanvitelli,” Naples, Italy
| | - Serena Ascione
- Department of Woman, Child, and General and Specialized Surgery, University of Campania “Luigi Vanvitelli,” Naples, Italy
| | - Mauro Carpentieri
- Department of Woman, Child, and General and Specialized Surgery, University of Campania “Luigi Vanvitelli,” Naples, Italy
| | - Simona Puzone
- Department of Woman, Child, and General and Specialized Surgery, University of Campania “Luigi Vanvitelli,” Naples, Italy
| | | | - Reema Garegrat
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, United Kingdom
| | - Marianna Lanza
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, United Kingdom
| | - Maria Moreno Morales
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, United Kingdom
| | - Gaurav Atreja
- Neonatal Unit, Imperial Health Care NHS Trust, London, United Kingdom
| | | | - Ujwal Kariholu
- Neonatal Unit, Imperial Health Care NHS Trust, London, United Kingdom
| | - Narendra Aladangady
- Neonatal Unit, Homerton Healthcare NHS Foundation Trust, London, United Kingdom
- Centre for Paediatrics, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Paul Fleming
- Neonatal Unit, Homerton Healthcare NHS Foundation Trust, London, United Kingdom
- Centre for Paediatrics, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Asha Mathews
- Neonatal Unit, Homerton Healthcare NHS Foundation Trust, London, United Kingdom
| | | | - Joanne Windrow
- Liverpool Women’s NHS Foundation Trust, Liverpool, United Kingdom
| | - Karen Harvey
- Liverpool Women’s NHS Foundation Trust, Liverpool, United Kingdom
| | - Aung Soe
- Oliver Fisher Neonatal Intensive Care Unit, Medway Maritime Hospital, Medway NHS Foundation Trust, Kent, United Kingdom
| | - Santosh Pattnayak
- Oliver Fisher Neonatal Intensive Care Unit, Medway Maritime Hospital, Medway NHS Foundation Trust, Kent, United Kingdom
| | - Palaniappan Sashikumar
- Oliver Fisher Neonatal Intensive Care Unit, Medway Maritime Hospital, Medway NHS Foundation Trust, Kent, United Kingdom
| | - Sundeep Harigopal
- Neonatal Medicine, Royal Victoria Infirmary, Newcastle Upon Tyne, United Kingdom
| | - Ronit Pressler
- Department of Neurophysiology, Great Ormond Street Hospital, London, United Kingdom
| | - Martin Wilson
- Centre for Human Brain Health and School of Psychology, University of Birmingham, Birmingham, United Kingdom
| | - Enrico De Vita
- MRI Physics, Radiology Department, Great Ormond Street Hospital for Children NHS Foundation Trust, London, United Kingdom
| | - Seetha Shankaran
- Department of Neonatal-Perinatal Medicine, Wayne State University, Detroit, Michigan
- Department of Pediatrics, The University of Texas at Austin, Dell Children’s Hospital, Austin, Texas
| | - Sudhin Thayyil
- Centre for Perinatal Neuroscience, Department of Brain Sciences, Imperial College London, London, United Kingdom
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4
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Proietti J, Boylan GB, Walsh BH. Regional variability in therapeutic hypothermia eligibility criteria for neonatal hypoxic-ischemic encephalopathy. Pediatr Res 2024:10.1038/s41390-024-03184-6. [PMID: 38649726 DOI: 10.1038/s41390-024-03184-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 03/13/2024] [Accepted: 03/24/2024] [Indexed: 04/25/2024]
Abstract
Early induced therapeutic hypothermia represents the cornerstone treatment in neonates with probable hypoxic-ischemic encephalopathy. The selection of patients for treatment usually involves meeting criteria indicating evidence of perinatal hypoxia-ischemia and the presence of moderate or severe encephalopathy. In this review, we highlight the variability that exists between some of the different regional and national eligibility guidelines. Determining the potential presence of perinatal hypoxia-ischemia may require either one, two or three signs amongst history of acute perinatal event, prolonged resuscitation at delivery, abnormal blood gases and low Apgar score, with a range of cutoff values. Clinical neurological exams often define the severity of encephalopathy differently, with varying number of domains required for determining eligibility and blurred interpretation of findings assigned to different severity grades in different systems. The role of early electrophysiological assessment is weighted differently. A clinical implication is that infants may receive different care depending on the location in which they are born. This could also impact epidemiological data, as inference of rates of moderate-severe encephalopathy based on therapeutic hypothermia rates are misleading and influenced by different eligibility methods used. We would advocate that a universally endorsed single severity staging of encephalopathy is vital for standardizing management and neonatal outcome. IMPACT: Variability exists between regional and national therapeutic hypothermia eligibility guidelines for neonates with probable hypoxic-ischemic encephalopathy. Differences are common in both criteria indicating perinatal hypoxia-ischemia and criteria defining moderate or severe encephalopathy. The role of early electrophysiological assessment is also weighted unequally. This reflects in different individual care and impacts research data. A universally endorsed single severity staging of encephalopathy would be crucial for standardizing management.
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Affiliation(s)
- Jacopo Proietti
- INFANT Research Centre, University College Cork, Cork, Ireland
- Department of Paediatrics and Child Health, University College Cork, Cork, Ireland
- Department of Engineering for Innovation Medicine, Innovation Biomedicine section, University of Verona, Verona, Italy
| | - Geraldine B Boylan
- INFANT Research Centre, University College Cork, Cork, Ireland
- Department of Paediatrics and Child Health, University College Cork, Cork, Ireland
| | - Brian H Walsh
- INFANT Research Centre, University College Cork, Cork, Ireland.
- Department of Paediatrics and Child Health, University College Cork, Cork, Ireland.
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5
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Park J, Park SH, Kim C, Yoon SJ, Lim JH, Han JH, Shin JE, Eun HS, Park MS, Lee SM. Growth and developmental outcomes of infants with hypoxic ischemic encephalopathy. Sci Rep 2023; 13:23100. [PMID: 38155236 PMCID: PMC10754824 DOI: 10.1038/s41598-023-50187-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 12/16/2023] [Indexed: 12/30/2023] Open
Abstract
Despite advances in obstetric care, hypoxic ischemic encephalopathy (HIE) remains a significant disease burden. We determined the national trends of HIE prevalence, therapeutic hypothermia (TH) use, mortality, and outcomes from 2012 to 2019. This study included term infants diagnosed with HIE between 2012 and 2019 from the National Health Insurance Service database. The prevalence of HIE was 2.4 per 1000 births without significant change during the period. TH was performed in approximately 6.7% of infants with HIE, and the annual variation ranged from 2.4 to 12.5%. The mortality among all term infants with HIE was 4.6%. The mortality rate among infants with HIE and TH significantly declined from 40 to 16.9% during the eight years. Infants with TH had higher mortality, increased use of inhaled nitric oxide, and more invasive ventilator use, indicating greater disease severity in the TH group. Infants with TH also showed significantly poorer outcomes, including delayed development, cerebral palsy, sensorineural hearing loss, and seizure, compared to infants without TH (p < 0.0001). With the increasing application of TH, mortality and developmental outcomes among infants with HIE have been improving in the past eight years in Korea. Further efforts to improve outcomes should be needed.
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Affiliation(s)
- Joonsik Park
- Department of Pediatrics, Yonsei University College of Medicine, 211 Eonjuro Gangnam-gu, Seoul, 06273, Republic of Korea
| | - Sook Hyun Park
- Department of Pediatrics, Yonsei University College of Medicine, 211 Eonjuro Gangnam-gu, Seoul, 06273, Republic of Korea
| | - Chloe Kim
- Department of Pediatrics, Yonsei University College of Medicine, 211 Eonjuro Gangnam-gu, Seoul, 06273, Republic of Korea
| | - So Jin Yoon
- Department of Pediatrics, Yonsei University College of Medicine, 211 Eonjuro Gangnam-gu, Seoul, 06273, Republic of Korea
| | - Joo Hee Lim
- Department of Pediatrics, Yonsei University College of Medicine, 211 Eonjuro Gangnam-gu, Seoul, 06273, Republic of Korea
| | - Jung Ho Han
- Department of Pediatrics, Yonsei University College of Medicine, 211 Eonjuro Gangnam-gu, Seoul, 06273, Republic of Korea
| | - Jeong Eun Shin
- Department of Pediatrics, Yonsei University College of Medicine, 211 Eonjuro Gangnam-gu, Seoul, 06273, Republic of Korea
| | - Ho Seon Eun
- Department of Pediatrics, Yonsei University College of Medicine, 211 Eonjuro Gangnam-gu, Seoul, 06273, Republic of Korea
| | - Min Soo Park
- Department of Pediatrics, Yonsei University College of Medicine, 211 Eonjuro Gangnam-gu, Seoul, 06273, Republic of Korea
| | - Soon Min Lee
- Department of Pediatrics, Yonsei University College of Medicine, 211 Eonjuro Gangnam-gu, Seoul, 06273, Republic of Korea.
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Pfister KM, Stoyell SM, Miller ZR, Hunt RH, Zorn EP, Thomas KM. Reduced Hippocampal Volumes in Children with History of Hypoxic Ischemic Encephalopathy after Therapeutic Hypothermia. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1005. [PMID: 37371237 DOI: 10.3390/children10061005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/23/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023]
Abstract
Hypoxic ischemic encephalopathy (HIE) remains a significant cause of disability despite treatment with therapeutic hypothermia (TH). Many survive with more subtle deficits that affect daily functioning and school performance. We have previously shown an early indication of hippocampal changes in infants with HIE despite TH. The aim of this study was to evaluate the hippocampal volume via MRI and memory function at 5 years of age. A cohort of children followed from birth returned for a 5-year follow-up (n = 10 HIE treated with TH, n = 8 healthy controls). The children underwent brain MRI and neurodevelopmental testing to assess their brain volume, general development, and memory function. Children with HIE had smaller hippocampal volumes than the controls despite no differences in the total brain volume (p = 0.02). Children with HIE generally scored within the average range on developmental testing. Though there was no difference in the memory scores between these groups, there was a positive within-group correlation between the hippocampal volume and memory scores in children with HIE (sentence recall r = 0.66, p = 0.038). There was no relationship between newborn memory function and 5-year hippocampal size. Children with HIE treated with TH experienced significant and lasting changes to the hippocampus despite improvements in survival and severe disability. Future studies should target diminishing injury to the hippocampus to improve overall outcomes.
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Affiliation(s)
- Katie M Pfister
- Department of Pediatrics, University of Minnesota, 2450 Riverside Ave., AO-401, Minneapolis, MN 55454, USA
| | - Sally M Stoyell
- Institute of Child Development, University of Minnesota, Campbell Hall, 51 E River Rd., Minneapolis, MN 55455, USA
| | - Zachary R Miller
- Institute of Child Development, University of Minnesota, Campbell Hall, 51 E River Rd., Minneapolis, MN 55455, USA
| | - Ruskin H Hunt
- Institute of Child Development, University of Minnesota, Campbell Hall, 51 E River Rd., Minneapolis, MN 55455, USA
| | - Elizabeth P Zorn
- Department of Pediatrics, University of Minnesota, 2450 Riverside Ave., AO-401, Minneapolis, MN 55454, USA
| | - Kathleen M Thomas
- Institute of Child Development, University of Minnesota, Campbell Hall, 51 E River Rd., Minneapolis, MN 55455, USA
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7
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Thiim KR, Garvey AA, Singh E, Walsh B, Inder TE, El-Dib M. Brain Injury in Infants Evaluated for, But Not Treated with, Therapeutic Hypothermia. J Pediatr 2023; 253:304-309. [PMID: 36179889 DOI: 10.1016/j.jpeds.2022.09.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 09/15/2022] [Accepted: 09/22/2022] [Indexed: 11/30/2022]
Abstract
Defining neonatal encephalopathy clinically to qualify for therapeutic hypothermia is challenging. This study examines magnetic resonance imaging outcomes of 39 infants who were evaluated and not cooled using criteria inclusive of mild encephalopathy. Infants evaluated for therapeutic hypothermia are at risk for brain injury and may benefit from neuroimaging and follow-up.
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Affiliation(s)
- Kirsten R Thiim
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Boston, MA
| | - Aisling A Garvey
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Boston, MA; INFANT Research Centre, University College Cork, Cork, Ireland; Department of Paediatrics and Child Health, University College Cork, Cork, Ireland; Harvard Medical School, Boston, MA
| | - Elizabeth Singh
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Boston, MA
| | - Brian Walsh
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Boston, MA; INFANT Research Centre, University College Cork, Cork, Ireland; Department of Paediatrics and Child Health, University College Cork, Cork, Ireland; Department of Neonatology, Cork University Maternity Hospital, Cork, Ireland
| | - Terrie E Inder
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA
| | - Mohamed El-Dib
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA.
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8
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Kodidhi A, Riley M, Vesoulis Z. The influence of late prematurity on the encephalopathy exam of infants with neonatal encephalopathy. J Neonatal Perinatal Med 2023; 16:693-700. [PMID: 38073399 PMCID: PMC10753960 DOI: 10.3233/npm-230041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
BACKGROUND Late preterm (LPT) infants are increasingly treated for hypoxic-ischemic encephalopathy (HIE). However, neurodevelopmental differences of LPT infants may independently influence the neurologic exam and confound care. METHODS Perinatal and outcome characteristics were extracted along with the worst autonomic and state/neuromuscular/reflex Sarnat components in a cross-section of infants with moderate/severe HIE. Infants were classified as late preterm (LPT, 34-36 weeks) or term (>36 weeks). RESULTS 250 infants were identified, 55 were late preterm. LPT infants had lower mean gestational age and birthweight and greater length of stay (LOS). LPT infants had higher median scores for the Moro and respiratory autonomic components, but no difference in total score. CONCLUSIONS LPT infants had increased LOS, worse Moro reflex, and respiratory status, but no clinically or statistically significant differences in total Sarnat scores. Although it is important to note the impact of immaturity on the exam, it is unlikely to independently alter management.
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Affiliation(s)
- A Kodidhi
- Department of Pediatrics, St. Louis Children's Hospital, St. Louis, MO, USA
| | - M Riley
- Division of Newborn Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, USA
| | - Z Vesoulis
- Division of Newborn Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, USA
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9
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Brain injury following mild hypoxic-ischemic encephalopathy in neonates-Ten-year experience in a tertiary perinatal center. J Perinatol 2022; 42:1630-1636. [PMID: 35953534 DOI: 10.1038/s41372-022-01486-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 07/27/2022] [Accepted: 07/29/2022] [Indexed: 01/19/2023]
Abstract
OBJECTIVE We aimed to evaluate abnormal magnetic resonance imaging (MRI) findings in neonates with mild hypoxic-ischemic encephalopathy (HIE). STUDY DESIGN This was a single-center, retrospective study of mild HIE conducted from 2011 to 2020. Almost all neonates with mild HIE received management targeted to a temperature of 36 ± 0.5°C for 72 h and underwent MRI (135 of 145). We evaluated medical records and assessed amplitude-integrated electroencephalography (aEEG). RESULT All participants survived until discharge. Abnormal MRI findings were present in 23/135 (17%) neonates. The normal versus abnormal MRI-finding groups had similar characteristics, except discontinuous aEEG patterns (p = 0.002) and inotropic drugs (p = 0.035). Regression analyses showed discontinuous aEEG patterns (odds ratio = 19.3, 95% confidence interval=1.88-197, p = 0.013) being associated with higher odds of abnormal MRI findings. CONCLUSION Our study suggests that a discontinuous aEEG pattern is associated with abnormal MRI findings and can be used to discuss the definition of mild HIE.
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10
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Li Y, Wisnowski JL, Chalak L, Mathur AM, McKinstry RC, Licona G, Mayock DE, Chang T, Van Meurs KP, Wu TW, Ahmad KA, Cornet MC, Rao R, Scheffler A, Wu YW. Mild hypoxic-ischemic encephalopathy (HIE): timing and pattern of MRI brain injury. Pediatr Res 2022; 92:1731-1736. [PMID: 35354930 PMCID: PMC9771796 DOI: 10.1038/s41390-022-02026-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 03/06/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND Mild hypoxic-ischemic encephalopathy (HIE) is increasingly recognized as a risk factor for neonatal brain injury. We examined the timing and pattern of brain injury in mild HIE. METHODS This retrospective cohort study includes infants with mild HIE treated at 9 hospitals. Neonatal brain MRIs were scored by 2 reviewers using a validated classification system, with discrepancies resolved by consensus. Severity and timing of MRI brain injury (i.e., acute, subacute, chronic) was scored on the subset of MRIs that were performed at or before 8 days of age. RESULTS Of 142 infants with mild HIE, 87 (61%) had injury on MRI at median age 5 (IQR 4-6) days. Watershed (23%), deep gray (20%) and punctate white matter (18%) injury were most common. Among the 125 (88%) infants who received a brain MRI at ≤8 days, mild (44%) injury was more common than moderate (11%) or severe (4%) injury. Subacute (37%) lesions were more commonly observed than acute (32%) or chronic lesions (1%). CONCLUSION Subacute brain injury is common in newborn infants with mild HIE. Novel neuroprotective treatments for mild HIE will ideally target both subacute and acute injury mechanisms. IMPACT Almost two-thirds of infants with mild HIE have evidence of brain injury on MRI obtained in the early neonatal period. Subacute brain injury was seen in 37% of infants with mild HIE. Neuroprotective treatments for mild HIE will ideally target both acute and subacute injury mechanisms.
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Affiliation(s)
- Yi Li
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA.
| | - Jessica L Wisnowski
- Department of Radiology and Pediatrics, Children's Hospital Los Angeles, University of Southern California, Los Angeles, CA, USA
| | - Lina Chalak
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Amit M Mathur
- Division of Neonatal Perinatal Medicine, Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Robert C McKinstry
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Genesis Licona
- Division of Neonatology, Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Dennis E Mayock
- Division of Neonatology, Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA
| | - Taeun Chang
- Department of Neurology, Children's National Hospital, George Washington School of Medicine & Health Sciences, Washington, DC, USA
| | - Krisa P Van Meurs
- Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Tai-Wei Wu
- Division of Neonatology, Department of Pediatrics, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Kaashif A Ahmad
- Pediatrix Medical Group of San Antonio, San Antonio, TX, USA
| | - Marie-Coralie Cornet
- Department of Pediatrics, University of California San Francisco, San Francisco, CA, USA
| | - Rakesh Rao
- Department of Pediatrics, Washington University in St. Louis, St. Louis, MO, USA
| | - Aaron Scheffler
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA
| | - Yvonne W Wu
- Department of Pediatrics, University of California San Francisco, San Francisco, CA, USA
- Department of Neurology, University of California San Francisco, San Francisco, CA, USA
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11
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Natarajan N, Benedetti G, Perez FA, Wood TR, German KR, Lockrow JP, Puia-Dumitrescu M, Myers E, Mietzsch U. Association Between Early EEG Background and Outcomes in Infants With Mild HIE Undergoing Therapeutic Hypothermia. Pediatr Neurol 2022; 134:52-58. [PMID: 35835026 DOI: 10.1016/j.pediatrneurol.2022.06.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/17/2022] [Accepted: 06/09/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Hypoxic-ischemic encephalopathy (HIE) occurs in 1-4:1000 live births. Although neonates with moderate-severe HIE have been studied over several decades, newborns with mild HIE remain understudied, including seizure occurrence, electroencephalography (EEG) characteristics, and outcome. METHODS We conducted a retrospective cohort study of neonates ≥35 weeks of gestation with mild HIE who underwent therapeutic hypothermia to correlate the early EEG background pattern with clinical course and outcomes. RESULTS Of the included 29 neonates, 10 infants had a moderately to severely abnormal EEG background and 19 had either a normal or a mildly abnormal background. Those with moderately to severely abnormal background also had more multiorgan dysfunction (90% vs 42%, P = 0.02) and a higher incidence of subdural and intraventricular hemorrhages (80% vs 26%, P = 0.02). The overall seizure incidence was 20.7% and was significantly higher in newborns with more severely abnormal background compared to neonates with less abnormal background (50% vs 5%; P = 0.01; relative risk, 9.5; 95% confidence interval, 1.28-70.6). Seizure onset was between 11 and 63 hours of life. Regardless of the EEG background pattern, seizures were brief with an overall low seizure burden. None of the newborns with normal or mildly abnormal background had a new onset of seizures after 24 hours of recording or developed epilepsy during infancy. CONCLUSIONS In neonates with mild HIE, early moderately to severely abnormal EEG background is common and strongly associated with an increased risk for seizures.
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Affiliation(s)
- Niranjana Natarajan
- Division of Pediatric Neurology, Department of Neurology, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington; Department of Pediatrics, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington
| | - Giulia Benedetti
- Division of Pediatric Neurology, Department of Neurology, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington
| | - Francisco A Perez
- Department of Radiology, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington
| | - Thomas R Wood
- Division of Neonatology, Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington
| | - Kendell R German
- Division of Neonatology, Department of Pediatrics, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington
| | - Jason P Lockrow
- Division of Pediatric Neurology, Department of Neurology, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington
| | - Mihai Puia-Dumitrescu
- Division of Neonatology, Department of Pediatrics, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington
| | - Emily Myers
- Division of Developmental Medicine, Department of Pediatrics, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington
| | - Ulrike Mietzsch
- Division of Neonatology, Department of Pediatrics, University of Washington School of Medicine, Seattle Children's Hospital, Seattle, Washington.
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12
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Differences in standardized neonatal encephalopathy exam criteria may impact therapeutic hypothermia eligibility. Pediatr Res 2022; 92:791-798. [PMID: 34754094 DOI: 10.1038/s41390-021-01834-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/14/2021] [Accepted: 10/20/2021] [Indexed: 11/08/2022]
Abstract
BACKGROUND Therapeutic hypothermia (TH) is routinely provided to those with moderate or severe neonatal encephalopathy (NE). Subtle differences exist in the standardized exams used to define NE severity. We aimed to assess if an infant's TH eligibility status differed if they were evaluated using either the NICHD/Neonatal Research Network's (NICHD-NRN) or TOBY/British Association of Perinatal Medicine's (TOBY-BAPM) neurological exam. METHODS Encephalopathic infants ≥36 weeks with evidence of perinatal asphyxia and complete documentation of the neurological exam <6 h of age were included. TH eligibility using the NICHD-NRN and TOBY-BAPM criteria was determined based upon the documented exams. RESULTS Ninety-one encephalopathic infants were included. Despite good agreement between the two exams (κ = 0.715, p < 0.001), TH eligibility differed between them (p < 0.001). A total of 47 infants were deemed eligible by at least one method-46 using NICHD-NRN and 35 using TOBY-BAPM. Of the 12 infants eligible per NICHD-NRN, but ineligible per TOBY-BAPM, two developed electrographic seizures and seven demonstrated hypoxic-ischemic cerebral injury. CONCLUSIONS Both the NICHD-NRN and TOBY-BAPM exams are evidence-based. Despite this, there is a significant difference in the number of infants eligible for TH depending on which exam is used. The NICHD-NRN exam identifies a greater proportion as eligible. IMPACT There are subtle differences in the NICHD-NRN and TOBY-BAPM's encephalopathy exams used to determine eligibility for TH. This results in a significant difference in the proportion of infants determined to be eligible for TH depending on which encephalopathy exam is used. The NICHD-NRN encephalopathy exam identifies more infants as being eligible for TH than the TOBY-BAPM encephalopathy exam. This may result in different rates of cooling depending on which evidence-based neurological exam for evaluation of encephalopathy a center uses.
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13
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Ehlting A, Zweyer M, Maes E, Schleehuber Y, Doshi H, Sabir H, Bernis ME. Impact of Hypoxia-Ischemia on Neurogenesis and Structural and Functional Outcomes in a Mild-Moderate Neonatal Hypoxia-Ischemia Brain Injury Model. Life (Basel) 2022; 12:life12081164. [PMID: 36013343 PMCID: PMC9410039 DOI: 10.3390/life12081164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/23/2022] [Accepted: 07/26/2022] [Indexed: 11/16/2022] Open
Abstract
Hypoxic-ischemic encephalopathy (HIE) is a common type of brain injury caused by a lack of oxygen and blood flow to the brain during the perinatal period. The incidence of HIE is approximately 2−3 cases per 1000 live births in high-income settings; while in low- and middle-income countries, the incidence is 3−10-fold higher. Therapeutic hypothermia (TH) is the current standard treatment for neonates affected by moderate−severe HIE. However, more than 50% of all infants with suspected HIE have mild encephalopathy, and these infants are not treated with TH because of their lower risk of adverse outcomes. Despite this, several analyses of pooled data provide increasing evidence that infants who initially have mild encephalopathy may present signs of more significant brain injury later in life. The purpose of this study was to expand our knowledge about the effect of mild−moderate hypoxia-ischemia (HI) at the cellular, structural, and functional levels. An established rat model of mild−moderate HI was used, where postnatal day (P) 7 rats were exposed to unilateral permanent occlusion of the left carotid artery and 90 min of 8% hypoxia, followed by TH or normothermia (NT) treatment. The extent of injury was assessed using histology (P14 and P42) and MRI (P11 and P32), as well as with short-term and long-term behavioral tests. Neurogenesis was assessed by BrdU staining. We showed that mild−moderate HI leads to a progressive loss of brain tissue, pathological changes in MRI scans, as well as an impairment of long-term motor function. At P14, the median area loss assessed by histology for HI animals was 20% (p < 0.05), corresponding to mild−moderate brain injury, increasing to 55% (p < 0.05) at P42. The data assessed by MRI corroborated our results. HI led to a decrease in neurogenesis, especially in the hippocampus and the lateral ventricle at early time points, with a delayed partial recovery. TH was not neuroprotective at early time points following mild−moderate HI, but prevented the increase in brain damage over time. Additionally, rats treated with TH showed better long-term motor function. Altogether, our results bring more light to the understanding of pathophysiology following mild-moderate HI. We showed that, in the context of mild-moderate HI, TH failed to be significantly neuroprotective. However, animals treated with TH showed a significant improvement in motor, but not cognitive long-term function. These results are in line with what is observed in some cases where neonates with mild HIE are at risk of neurodevelopmental deficits in infancy or childhood. Whether TH should be used as a preventive treatment to reduce adverse outcomes in mild-HIE remains of active interest, and more research has to be carried out in order to address this question.
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Affiliation(s)
- Anne Ehlting
- Department of Neonatology and Pediatric Intensive Care, Children’s Hospital, University of Bonn, 53127 Bonn, Germany; (A.E.); (M.Z.); (E.M.); (Y.S.); (M.E.B.)
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), 53127 Bonn, Germany;
| | - Margit Zweyer
- Department of Neonatology and Pediatric Intensive Care, Children’s Hospital, University of Bonn, 53127 Bonn, Germany; (A.E.); (M.Z.); (E.M.); (Y.S.); (M.E.B.)
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), 53127 Bonn, Germany;
| | - Elke Maes
- Department of Neonatology and Pediatric Intensive Care, Children’s Hospital, University of Bonn, 53127 Bonn, Germany; (A.E.); (M.Z.); (E.M.); (Y.S.); (M.E.B.)
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), 53127 Bonn, Germany;
| | - Yvonne Schleehuber
- Department of Neonatology and Pediatric Intensive Care, Children’s Hospital, University of Bonn, 53127 Bonn, Germany; (A.E.); (M.Z.); (E.M.); (Y.S.); (M.E.B.)
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), 53127 Bonn, Germany;
| | - Hardik Doshi
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), 53127 Bonn, Germany;
| | - Hemmen Sabir
- Department of Neonatology and Pediatric Intensive Care, Children’s Hospital, University of Bonn, 53127 Bonn, Germany; (A.E.); (M.Z.); (E.M.); (Y.S.); (M.E.B.)
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), 53127 Bonn, Germany;
- Correspondence:
| | - Maria Eugenia Bernis
- Department of Neonatology and Pediatric Intensive Care, Children’s Hospital, University of Bonn, 53127 Bonn, Germany; (A.E.); (M.Z.); (E.M.); (Y.S.); (M.E.B.)
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), 53127 Bonn, Germany;
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14
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Parmentier CEJ, Steggerda SJ, Weeke LC, Rijken M, De Vries LS, Groenendaal F. Outcome of non-cooled asphyxiated infants with under-recognised or delayed-onset encephalopathy. Arch Dis Child Fetal Neonatal Ed 2022; 107:364-370. [PMID: 34916259 DOI: 10.1136/archdischild-2020-321331] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 09/15/2021] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To describe the clinical characteristics, MRI findings and neurodevelopmental outcome of infants with documented perinatal asphyxia and seizure onset within 24 hours after birth who were not selected for therapeutic hypothermia (TH). DESIGN Retrospective cohort study. SETTING AND PATIENTS (Near-)term infants with documented perinatal asphyxia referred to two Dutch level III neonatal units with neonatal encephalopathy (NE) and seizures <24 hours after birth not treated with TH. Infants with a diagnosis other than NE following perinatal asphyxia causing the seizures were excluded. MAIN OUTCOME MEASURES Clinical characteristics, findings on cranial MRI performed within 8 days after birth and neurodevelopmental outcome assessed using the Griffiths Mental Development Scales at 18 months or Bayley Scales of Infant and Toddler Development-Third Edition at 2 years of age. RESULTS 39 infants were included. All had abnormalities on MRI. Predominant white matter/watershed injury was the most common pattern of injury, 23 (59%). 7 (18%) infants had predominant basal ganglia/thalamus injury, 3 (8%) near total brain injury, 5 (13%) arterial ischaemic stroke, 1 (3%) an intraventricular haemorrhage. Adverse outcome was seen in 51%: 6 died, 11 developed cerebral palsy (spastic n=8, dyskinetic n=3), 2 had neurodevelopmental delay, 1 had severe hearing impairment. CONCLUSIONS All infants with documented perinatal asphyxia and seizure onset within 24 hours after birth who did not receive TH had abnormalities on MRI. 51% had an adverse outcome. Better methods for recognition of infants who might benefit from TH and careful neurodevelopmental follow-up are urgently needed.
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Affiliation(s)
| | - Sylke J Steggerda
- Department of Neonatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Lauren C Weeke
- Department of Neonatology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Monique Rijken
- Department of Neonatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Linda S De Vries
- Department of Neonatology, University Medical Center Utrecht, Utrecht, The Netherlands.,Department of Neonatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Floris Groenendaal
- Department of Neonatology, University Medical Center Utrecht, Utrecht, The Netherlands
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15
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Yieh L, Lee H, Lu T, Song A, Gong CL, Wu TW, Friedlich P, Lakshmanan A, Dukhovny D, Hay J. Neonates with mild hypoxic-ischaemic encephalopathy receiving supportive care versus therapeutic hypothermia in California. Arch Dis Child Fetal Neonatal Ed 2022; 107:324-328. [PMID: 34462319 DOI: 10.1136/archdischild-2021-322250] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 08/12/2021] [Indexed: 11/03/2022]
Abstract
OBJECTIVE The use of therapeutic hypothermia (TH) for mild hypoxic-ischaemic encephalopathy (HIE) remains controversial and inconsistent. We analysed trends in TH and maternal and infant characteristics associated with short-term outcomes of infants with mild HIE. DESIGN Retrospective cohort analysis of the California Perinatal Quality Care Collaborative database 2010-2018. E-value analysis was conducted to determine the potential impact of unmeasured confounding. SETTING California neonatal intensive care units. PATIENTS 1364 neonates with mild HIE. INTERVENTIONS Supportive care versus TH. MAIN OUTCOME MEASURES Factors associated with TH and mortality. RESULTS The proportion of infants receiving TH increased from 46% in 2010 to 79% in 2018. TH was more likely in the setting of singleton birth (OR 2.69, 95% CI 1.21 to 5.39), no major birth defects (OR 2.18, 95% CI 1.42 to 3.30), operative vaginal delivery (OR 3.04, 95% CI 1.80 to 5.10) and 5-minute Apgar score ≤5 (OR 3.17, 95% CI 2.43 to 4.13). Mortality was associated with small for gestational age (OR 5.79, 95% CI 1.90 to 18.48), <38 weeks' gestation (OR 7.31 95% CI 2.39 to 24.93), major birth defects (OR 11.62, 95% CI 3.97 to 38.00), inhaled nitric oxide (OR 12.73, 95% CI 4.00 to 44.53) and nosocomial infection (OR 7.98, 95% CI 1.15 to 47.03). E-value analyses suggest that unmeasured confounding may have contributed to some of the observed effects. CONCLUSIONS Variation in management of mild HIE persists, but therapeutic drift has become more prevalent over time. Further studies are needed to assess long-term outcomes alongside resource utilisation to inform evidence-based practice.
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Affiliation(s)
- Leah Yieh
- Fetal and Neonatal Institute, Division of Neonatology, Children's Hospital Los Angeles, Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Leonard D. Schaeffer Center for Health Policy and Economics, School of Pharmacy, University of Southern California, Los Angeles, California, USA
| | - Henry Lee
- California Perinatal Quality Care Collaborative, Stanford University School of Medicine and Lucile Packard Children's Hospital, Stanford, California, USA
| | - Tianyao Lu
- California Perinatal Quality Care Collaborative, Stanford University School of Medicine and Lucile Packard Children's Hospital, Stanford, California, USA
| | - Ashley Song
- Department of Preventive Medicine, John Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Cynthia L Gong
- Fetal and Neonatal Institute, Division of Neonatology, Children's Hospital Los Angeles, Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Leonard D. Schaeffer Center for Health Policy and Economics, School of Pharmacy, University of Southern California, Los Angeles, California, USA
| | - Tai-Wei Wu
- Fetal and Neonatal Institute, Division of Neonatology, Children's Hospital Los Angeles, Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Philippe Friedlich
- Fetal and Neonatal Institute, Division of Neonatology, Children's Hospital Los Angeles, Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Ashwini Lakshmanan
- Fetal and Neonatal Institute, Division of Neonatology, Children's Hospital Los Angeles, Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
- Leonard D. Schaeffer Center for Health Policy and Economics, School of Pharmacy, University of Southern California, Los Angeles, California, USA
| | - Dmitry Dukhovny
- Department of Pediatrics, Oregon Health & Science University, Portland, Oregon, USA
| | - Joel Hay
- Leonard D. Schaeffer Center for Health Policy and Economics, School of Pharmacy, University of Southern California, Los Angeles, California, USA
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16
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Mooney C, O'Boyle D, Finder M, Hallberg B, Walsh BH, Henshall DC, Boylan GB, Murray DM. Predictive modelling of hypoxic ischaemic encephalopathy risk following perinatal asphyxia. Heliyon 2021; 7:e07411. [PMID: 34278022 PMCID: PMC8261660 DOI: 10.1016/j.heliyon.2021.e07411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/29/2021] [Accepted: 06/23/2021] [Indexed: 01/03/2023] Open
Abstract
Hypoxic Ischemic Encephalopathy (HIE) remains a major cause of neurological disability. Early intervention with therapeutic hypothermia improves outcome, but prediction of HIE is difficult and no single clinical marker is reliable. Machine learning algorithms may allow identification of patterns in clinical data to improve prognostic power. Here we examine the use of a Random Forest machine learning algorithm and five-fold cross-validation to predict the occurrence of HIE in a prospective cohort of infants with perinatal asphyxia. Infants with perinatal asphyxia were recruited at birth and neonatal course was followed for the development of HIE. Clinical variables were recorded for each infant including maternal demographics, delivery details and infant's condition at birth. We found that the strongest predictors of HIE were the infant's condition at birth (as expressed by Apgar score), need for resuscitation, and the first postnatal measures of pH, lactate, and base deficit. Random Forest models combining features including Apgar score, most intensive resuscitation, maternal age and infant birth weight both with and without biochemical markers of pH, lactate, and base deficit resulted in a sensitivity of 56-100% and a specificity of 78-99%. This study presents a dynamic method of rapid classification that has the potential to be easily adapted and implemented in a clinical setting, with and without the availability of blood gas analysis. Our results demonstrate that applying machine learning algorithms to readily available clinical data may support clinicians in the early and accurate identification of infants who will develop HIE. We anticipate our models to be a starting point for the development of a more sophisticated clinical decision support system to help identify which infants will benefit from early therapeutic hypothermia.
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Affiliation(s)
- Catherine Mooney
- School of Computer Science, University College Dublin, Dublin, Ireland.,FutureNeuro SFI Research Centre, RCSI University of Medicine and Health Sciences, Dublin, Ireland.,INFANT Research Centre, University College Cork, Cork, Ireland
| | - Daragh O'Boyle
- INFANT Research Centre, University College Cork, Cork, Ireland.,Department of Paediatrics and Child Health, University College Cork, Cork, Ireland
| | - Mikael Finder
- Neonatal Department, Karolinska University Hospital, Stockholm, Sweden.,Division of Paediatrics, CLINTEC, Karolinska Institute, Stockholm, Sweden
| | - Boubou Hallberg
- Neonatal Department, Karolinska University Hospital, Stockholm, Sweden.,Division of Paediatrics, CLINTEC, Karolinska Institute, Stockholm, Sweden
| | - Brian H Walsh
- INFANT Research Centre, University College Cork, Cork, Ireland.,Department of Paediatrics and Child Health, University College Cork, Cork, Ireland.,Department of Neonatology, Cork University Maternity Hospital, Cork, Ireland
| | - David C Henshall
- FutureNeuro SFI Research Centre, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Geraldine B Boylan
- INFANT Research Centre, University College Cork, Cork, Ireland.,Department of Paediatrics and Child Health, University College Cork, Cork, Ireland
| | - Deirdre M Murray
- INFANT Research Centre, University College Cork, Cork, Ireland.,Department of Paediatrics and Child Health, University College Cork, Cork, Ireland
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