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Guo X, Ma D, Li R, Zhang R, Guo Y, Yu Z, Chen C. Association between viral infection and bronchopulmonary dysplasia in preterm infants: a systematic review and meta-analysis. Eur J Pediatr 2024:10.1007/s00431-024-05565-9. [PMID: 38634889 DOI: 10.1007/s00431-024-05565-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/05/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024]
Abstract
Bronchopulmonary dysplasia (BPD) is the most common serious complication of very preterm infants (VPI) or very low birth weight (VLBW) infants. Studies implicate viral infections in etiopathogenesis. The aim of this study was to summarize the relationship between viral infections and BPD through a systematic review and meta-analysis. We searched PubMed, Embase, the Web of Science Core Collection, and the Cochrane Database on December 19, 2023. We included observational studies that examined the association between viral infections and BPD in preterm infants. We extracted data on study methods, participant characteristics, exposure assessment, and outcome measures. We assessed study risk of bias using the Newcastle-Ottawa Scale (NOS). We included 17 and 15 studies in the qualitative review and meta-analysis, respectively. The meta-analysis showed a significant association between viral infection and BPD diagnosed at 36 weeks postmenstrual age (odds ratio (OR): 2.42, 95% confidence interval: 1.89-3.09, 13 studies, very low certainty of evidence). In a subgroup analysis of specific viruses, cytomegalovirus (CMV) proved to be significantly associated with BPD diagnosed at 36 weeks postmenstrual age (OR: 2.34, 95% confidence interval: 1.80-3.05, 11 studies). We did not find an association between viral infection and BPD diagnosed on the 28th day of life, probably due to the small sample size of the included prospective studies. Conclusion: Viral infections, especially CMV, are associated with an increased risk of BPD in preterm infants. Methodologically reliable prospective studies with large samples are needed to validate our conclusions, and high-quality randomized controlled studies are needed to explore the effect of prevention or treatment of viral infections on the incidence of BPD. What is Known: • Studies have attempted to identify viral infections and bronchopulmonary dysplasia in preterm infants; however, results have been inconsistent. What is New: • Systematic demonstration that viral infections, particularly cytomegalovirus, are positively associated with bronchopulmonary dysplasia diagnosed in preterm infants at the 36th week of postmenstrual age. • The importance of screening for viral infections in preterm infants, especially cytomegalovirus. More high-quality studies should be produced in the future to investigate the causal relationship between viral infections and bronchopulmonary dysplasia.
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Affiliation(s)
- Xin Guo
- Department of Neonatology, Longgang District Maternity & Child Healthcare Hospital of Shenzhen City (Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen, 518172, Guangdong, China
| | - Defei Ma
- Department of Neonatology, Longgang District Maternity & Child Healthcare Hospital of Shenzhen City (Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen, 518172, Guangdong, China
| | - Rui Li
- Department of Neonatology, Longgang District Maternity & Child Healthcare Hospital of Shenzhen City (Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen, 518172, Guangdong, China
| | - Ruolin Zhang
- Department of Neonatology, Nanshan Maternity & Child Healthcare Hospital, Shenzhen, 518067, Guangdong, China
| | - Yanping Guo
- Department of Pediatrics, Peking University Shenzhen Hospital, Shenzhen, 518036, Guangdong, China
| | - Zhangbin Yu
- Department of Neonatology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, 518000, Guangdong, China.
| | - Cheng Chen
- Department of Neonatology, Longgang District Maternity & Child Healthcare Hospital of Shenzhen City (Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen, 518172, Guangdong, China.
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Young KC, Schmidt AF, Tan AW, Sbragia L, Elsaie A, Shivanna B. Pathogenesis and Physiologic Mechanisms of Neonatal Pulmonary Hypertension: Preclinical Studies. Clin Perinatol 2024; 51:21-43. [PMID: 38325942 DOI: 10.1016/j.clp.2023.11.004] [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: 02/09/2024]
Abstract
Neonatal pulmonary hypertension (PH) is a devastating disorder of the pulmonary vasculature characterized by elevated pulmonary vascular resistance and mean pulmonary arterial pressure. Occurring predominantly because of maldevelopment or maladaptation of the pulmonary vasculature, PH in neonates is associated with suboptimal short-term and long-term outcomes because its pathobiology is unclear in most circumstances, and it responds poorly to conventional pulmonary vasodilators. Understanding the pathogenesis and pathophysiology of neonatal PH can lead to novel strategies and precise therapies. The review is designed to achieve this goal by summarizing pulmonary vascular development and the pathogenesis and pathophysiology of PH associated with maladaptation, bronchopulmonary dysplasia, and congenital diaphragmatic hernia based on evidence predominantly from preclinical studies. We also discuss the pros and cons of and provide future directions for preclinical studies in neonatal PH.
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Affiliation(s)
- Karen C Young
- Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine, Batchelor Children's Research Institute, 1580 North West 10th Avenue, RM-345, Miami, Fl 33136, USA.
| | - Augusto F Schmidt
- Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine, Batchelor Children's Research Institute, 1580 North West 10th Avenue, RM-345, Miami, Fl 33136, USA
| | - April W Tan
- Division of Neonatology, Department of Pediatrics, University of Miami Miller School of Medicine, Batchelor Children's Research Institute, 1580 North West 10th Avenue, RM-345, Miami, Fl 33136, USA
| | - Lourenco Sbragia
- Ribeirao Preto Medical School, University of Sao Paulo, Av. Bandeirantes 3900, 10th Floor, Monte Alegre14049-900, Ribeirao Preto SP, Brazil
| | - Ahmed Elsaie
- Ascension Via Christi St.Joseph Hospital, 3rd Floor, section of Neonatology, 3600 East Harry StreetWichita, KS 67218, USA; Department of Pediatrics, Cairo University, Cairo 11956, Egypt
| | - Binoy Shivanna
- Division of Neonatology, Department of Pediatrics, 6621 Fannin Street, MC: WT 6-104, Houston, TX 77030, USA
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3
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Beer L, Rivera BK, Jama W, Slaughter JL, Backes CH, Conroy S, Kielt MJ. Association of the respiratory severity score with bronchopulmonary dysplasia-associated pulmonary hypertension in infants born extremely preterm. J Perinatol 2024; 44:294-300. [PMID: 37853090 DOI: 10.1038/s41372-023-01798-y] [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: 04/23/2023] [Revised: 10/04/2023] [Accepted: 10/06/2023] [Indexed: 10/20/2023]
Abstract
OBJECTIVE To test the hypothesis that elevations in the respiratory severity score (RSS) are associated with increased probability of bronchopulmonary dysplasia-associated pulmonary hypertension (BPD-PH). STUDY DESIGN Retrospective cohort study of infants born extremely preterm admitted to a BPD center between 2010 and 2018. Echocardiograms obtained ≥ 36 weeks' post-menstrual age (PMA) were independently adjudicated by two blinded cardiologists to determine the presence/absence of BPD-PH. Multivariable logistic regression estimated the association between RSS and BPD-PH. RESULT BPD-PH was observed in 68/223 (36%) of subjects. The median RSS at time of echocardiography was 3.04 (Range 0-18.3). A one-point increase in the RSS was associated with BPD-PH, aOR 1.3 (95% CI 1.2-1.4), after adjustment for gestational age and PMA at time of echocardiography. CONCLUSION Elevations in the RSS were associated with a greater probability of BPD-PH. Prospective studies are needed to determine the validity and performance of RSS as a clinical susceptibility/risk biomarker for BPD-PH.
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Affiliation(s)
- Lindsey Beer
- Ohio Perinatal Research Network, Nationwide Children's Hospital, Columbus, OH, USA
- Division of Neonatology, Nationwide Children's Hospital, Columbus, OH, USA
| | - Brian K Rivera
- Ohio Perinatal Research Network, Nationwide Children's Hospital, Columbus, OH, USA
- Center for Perinatal Research, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Waceys Jama
- Ohio Perinatal Research Network, Nationwide Children's Hospital, Columbus, OH, USA
| | - Jonathan L Slaughter
- Ohio Perinatal Research Network, Nationwide Children's Hospital, Columbus, OH, USA
- Division of Neonatology, Nationwide Children's Hospital, Columbus, OH, USA
- Center for Perinatal Research, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Carl H Backes
- Ohio Perinatal Research Network, Nationwide Children's Hospital, Columbus, OH, USA
- Division of Neonatology, Nationwide Children's Hospital, Columbus, OH, USA
- Center for Perinatal Research, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
- The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
| | - Sara Conroy
- Ohio Perinatal Research Network, Nationwide Children's Hospital, Columbus, OH, USA
- Department of Biomedical Informatics, Center for Biostatistics, The Ohio State University College of Medicine, Columbus, OH, USA
- Biostatistics Resource at Nationwide Children's Hospital, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Matthew J Kielt
- Ohio Perinatal Research Network, Nationwide Children's Hospital, Columbus, OH, USA.
- Division of Neonatology, Nationwide Children's Hospital, Columbus, OH, USA.
- Comprehensive Center for Bronchopulmonary Dysplasia, Nationwide Children's Hospital, Columbus, OH, USA.
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El-Saie A, Varghese NP, Webb MK, Villafranco N, Gandhi B, Guaman MC, Shivanna B. Bronchopulmonary dysplasia - associated pulmonary hypertension: An updated review. Semin Perinatol 2023; 47:151817. [PMID: 37783579 PMCID: PMC10843293 DOI: 10.1016/j.semperi.2023.151817] [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] [Indexed: 10/04/2023]
Abstract
Bronchopulmonary dysplasia (BPD) is the leading cause of chronic lung disease in infants and the commonest complication of prematurity. Advances in respiratory and overall neonatal care have increased the survival of extremely low gestational age newborns, leading to the continued high incidence of BPD. Pulmonary hypertension (PH) represents the severe form of the pulmonary vascular disease associated with BPD, and affects almost one-third of infants with moderate to severe BPD. PH responds suboptimally to pulmonary vasodilators and increases morbidity and mortality in BPD infants. An up-to-date knowledge of the pathogenesis, pathophysiology, diagnosis, treatment, and outcomes of BPD-PH can be helpful to develop meaningful and novel strategies to improve the outcomes of infants with this disorder. Therefore, our multidisciplinary team has attempted to thoroughly review and summarize the latest advances in BPD-PH in preventing and managing this morbid lung disorder of preterm infants.
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Affiliation(s)
- Ahmed El-Saie
- Section of Neonatology, Department of Pediatrics, Children's Mercy Hospital, Kansas City, MO, USA
| | - Nidhy P Varghese
- Division of Pulmonology, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Melissa K Webb
- Division of Cardiology, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Natalie Villafranco
- Division of Pulmonology, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Bheru Gandhi
- Division of Neonatology, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Milenka Cuevas Guaman
- Division of Neonatology, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Binoy Shivanna
- Division of Neonatology, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA.
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Sullivan RT, Raj JU, Austin ED. Recent Advances in Pediatric Pulmonary Hypertension: Implications for Diagnosis and Treatment. Clin Ther 2023; 45:901-912. [PMID: 37517916 DOI: 10.1016/j.clinthera.2023.07.001] [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] [Received: 02/27/2023] [Revised: 07/03/2023] [Accepted: 07/06/2023] [Indexed: 08/01/2023]
Abstract
PURPOSE Pediatric pulmonary hypertension (PH) is a condition characterized by elevated pulmonary arterial pressure, which has the potential to be life-limiting. The etiology of pediatric PH varies. When compared with adult cohorts, the etiology is often multifactorial, with contributions from prenatal, genetic, and developmental factors. This review aims to provide an up-to-date overview of the causes and classification of pediatric PH, describe current therapeutics in pediatric PH, and discuss upcoming and necessary research in pediatric PH. METHODS PubMed was searched for articles relating to pediatric pulmonary hypertension, with a particular focus on articles published within the past 10 years. Literature was reviewed for pertinent areas related to this topic. FINDINGS The evaluation and approach to pediatric PH are unique when compared with that of adults, in large part because of the different, often multifactorial, causes of the disease in children. Collaborative registry studies have found that the most common disease causes include developmental lung disease and subsets of pulmonary arterial hypertension, which includes genetic variants and PH associated with congenital heart disease. Treatment with PH-targeted therapies in pediatrics is often guided by extrapolation of adult data, small clinical studies in pediatrics, and/or expert consensus opinion. We review diagnostic considerations and treatment in some of the more common pediatric subpopulations of patients with PH, including developmental lung diseases, congenital heart disease, and trisomy 21. IMPLICATIONS The care of pediatric patients with PH requires consideration of unique pediatric-specific factors. With significant variability in disease etiology, ongoing efforts are needed to optimize treatment strategies based on disease phenotype and guide evidence-based practices.
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Affiliation(s)
- Rachel T Sullivan
- Department of Pediatrics, Division of Cardiology, Vanderbilt University Medical Center, Monroe Carrell Jr Children's Hospital, Nashville, Tennessee.
| | - J Usha Raj
- Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois
| | - Eric D Austin
- Department of Pediatrics, Division of Pulmonary Medicine, Vanderbilt University Medical Center, Monroe Carrell Jr Children's Hospital, Nashville, Tennessee
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Fitzgerald DA. The infant with bronchopulmonary dysplasia on home oxygen: The oxygen weaning conundrum in the absence of good evidence. Paediatr Respir Rev 2023; 47:11-15. [PMID: 36822990 DOI: 10.1016/j.prrv.2023.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 01/26/2023]
Abstract
Bronchopulmonary dysplasia [BPD] is the most common complication of extremely preterm delivery and its optimal management remains challenging because of a lack of evidence to guide management. There has been improvement in the management of evolving BPD in the neonatal intensive care unit (NICU). The threshold for provision of home oxygen therapy, often occurring because of a preference for earlier discharge from the NICU, creates tensions for clincians and families. Once discharged in supplemental oxygen, the approaches for the weaning of this therapy vary considerably across the world. Regardless of guidelines and multidisciplinary team support, up to a third of families of an infant with BPD elect to withdraw home oxygen therapy independently of medical advice. There is a pressing need to derive evidence to better inform practice, generate international consensus and undertake large, appropriately funded, longitudinal studies of BPD with clinically meaningful outcomes (respiratory, cardiovascular and neurodevelopmental) from infancy to adulthood.
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Affiliation(s)
- Dominic A Fitzgerald
- Department of Respiratory Medicine, The Children's Hospital at Westmead, Locked Bag 4001, Westmead, NSW 2145, Australia; Discipline of Child and Adolescent Health, Faculty of Medicine, Division of Health Sciences, University of Sydney, Camperdown, NSW 2050, Australia.
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7
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Qu S, Shan L, Chen X, Zhang Z, Wu Y, Chen Y, Zhuo F, Wang Y, Dong H. The role of rhIGF-1/BP3 in the prevention of pulmonary hypertension in bronchopulmonary dysplasia and its underlying mechanism. BMC Pulm Med 2023; 23:209. [PMID: 37322452 DOI: 10.1186/s12890-023-02498-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/26/2023] [Indexed: 06/17/2023] Open
Abstract
BACKGROUND This study aimed to determine whether postnatal treatment with recombinant human IGF-1 (rhIGF-1)/binding peptide 3 (BP3) ameliorates lung injury and prevents pulmonary hypertension (PH) in bronchopulmonary dysplasia (BPD) models. METHODS We used two models of BPD in this study: one model that was associated with chorioamnionitis (CA), stimulated by intra-amniotic fluid and exposure to lipopolysaccharide (LPS), whereas the other was exposed to postnatal hyperoxia. Newborn rats were treated with rhIGF-1/BP3 (0.2 mg/Kg/d) or saline via intraperitoneal injection. The study endpoints included the wet/dry weight (W/D) ratio of lung tissues, radial alveolar counts (RACs), vessel density, right ventricular hypertrophy (RVH), lung resistance, and lung compliance. Hematoxylin and eosin (H&E) and Masson staining were used to evaluate the degree of lung injury and pulmonary fibrosis. IGF-1 and eNOS expression were detected using western blotting or quantitative reverse transcriptase polymerase chain reaction (qRT-PCR). The levels of SP-C, E-cadherin, N-cadherin, FSP1, and Vimentin in the lung tissues were detected by immunofluorescence. RESULTS LPS and hyperoxia treatment increased lung injury and pulmonary fibrosis, enhanced RVH and total respiratory resistance, and decreased RAC, pulmonary vascular density and pulmonary compliance in young mice (all p < 0.01). Simultaneously, LPS and hyperoxia induced an increase in epithelial-mesenchymal transition (EMT) in airway epithelial cells. However, rhIGF-1/BP3 treatment reduced lung injury and pulmonary fibrosis, decreased RVH and total respiratory resistance, and enhanced RAC, pulmonary vascular density and pulmonary compliance, as well as inhibited EMT in airway epithelial cells in LPS and hyperoxia treated mice. CONCLUSION Postnatal rhIGF-1/BP3 treatment relieved the effects of LPS or hyperoxia on lung injury and prevented RVH, providing a promising strategy for the treatment of BPD.
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Affiliation(s)
- Sehua Qu
- Department of Neonatology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Lianqiang Shan
- Department of Radiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Xin Chen
- Department of Neonatology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Zhen Zhang
- Department of Neonatology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Yumeng Wu
- Department of Pediatrics, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Yun Chen
- Department of Pediatrics, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Feixiang Zhuo
- Department of Neonatology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Yitong Wang
- Bengbu Medical College, Bengbu, 233000, China
| | - Huaifu Dong
- Department of Neonatology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China.
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Sanlorenzo LA, Hatch LD. Developing a Respiratory Quality Improvement Program to Prevent and Treat Bronchopulmonary Dysplasia in the Neonatal Intensive Care Unit. Clin Perinatol 2023; 50:363-380. [PMID: 37201986 DOI: 10.1016/j.clp.2023.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Improvements in respiratory care have resulted in improved outcomes for preterm infants over the past three decades. To target the multifactorial nature of neonatal lung diseases, neonatal intensive care units (NICUs) should consider developing comprehensive respiratory quality improvement programs that address all drivers of neonatal respiratory disease. This article presents a potential framework for developing a quality improvement program to prevent bronchopulmonary dysplasia in the NICU. Drawing on available research and quality improvement reports, the authors discuss key components, measures, drivers, and interventions that should be considered when building a respiratory quality improvement program devoted to preventing and treating bronchopulmonary dysplasia.
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Affiliation(s)
- Lauren A Sanlorenzo
- Department of Pediatrics, Division of Neonatology, Columbia University Medical Center, 3959 Broadway Avenue, New York, NY 10032, USA
| | - Leon Dupree Hatch
- Department of Pediatrics, Division of Neonatology, Vanderbilt University Medical Center, 4413 VCH, 2200 Children's Way, Nashville, TN 37232, USA; Center for Child Health Policy, Vanderbilt University Medical Center, Nashville, TN, USA; Critical Illness, Brain Dysfunction, and Survivorship Center, Vanderbilt University Medical Center, Nashville, TN, USA.
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9
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Kielt M, Beer L, Rivera B, Jama W, Slaughter J, Backes C, Conroy S. Association of the Respiratory Severity Score with Bronchopulmonary Dysplasia-Associated Pulmonary Hypertension in Infants Born Extremely Preterm. RESEARCH SQUARE 2023:rs.3.rs-2852392. [PMID: 37163034 PMCID: PMC10168449 DOI: 10.21203/rs.3.rs-2852392/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Objective To test the hypothesis that elevations in the respiratory severity score (RSS) are associated with increased risk of bronchopulmonary dysplasia-associated pulmonary hypertension (BPD-PH). Study Design Retrospective cohort study of infants born extremely preterm admitted to a BPD center between 2010-2018. Echocardiograms obtained ≥36 weeks' post-menstrual age (PMA) were independently adjudicated by two blinded cardiologists to determine the presence/absence of BPD-PH. Multivariable logistic regression estimated the association between RSS with BPD-PH. Result BPD-PH was observed in 68/223 (36%) of subjects. The median RSS at time of echocardiography was 3.04 (Range 0-18.3). A one-point increase in RSS was associated with BPD-PH, aOR 1.3 (95% CI 1.2-1.4), after adjustment for gestational age and PMA at time of echocardiography. Conclusion Elevations in the RSS were associated with a greater risk of BPD-PH. Prospective studies are needed to determine the validity and performance of RSS as a clinical susceptibility/risk biomarker for BPD-PH.
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Affiliation(s)
- Matthew Kielt
- Nationwide Children's Hospital, The Ohio State University College of Medicine
| | | | | | - Waceys Jama
- Abigail Wexner Research Institute at Nationwide Children's Hospital
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Yung D, Jackson EO, Blumenfeld A, Redding G, DiGeronimo R, McGuire JK, Riker M, Tressel W, Berkelhamer S, Eldredge LC. A multidisciplinary approach to severe bronchopulmonary dysplasia is associated with resolution of pulmonary hypertension. Front Pediatr 2023; 11:1077422. [PMID: 37063675 PMCID: PMC10098720 DOI: 10.3389/fped.2023.1077422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 03/08/2023] [Indexed: 04/18/2023] Open
Abstract
Objective To describe our multidisciplinary bronchopulmonary dysplasia (BPD) consult team's systematic approach to BPD associated pulmonary hypertension (PH), to report our center outcomes, and to evaluate clinical associations with outcomes. Study design Retrospective cohort of 60 patients with BPD-PH who were referred to the Seattle Children's Hospital BPD team from 2018 to 2020. Patients with critical congenital heart disease were excluded. Demographics, comorbidities, treatments, closure of hemodynamically relevant intracardiac shunts, and clinical outcomes including time to BPD-PH resolution were reviewed. Results Median gestational age of the 60 patients was 25 weeks (IQR: 24-26). 20% were small for gestational age (SGA), 65% were male, and 25% received a tracheostomy. With aggressive cardiopulmonary management including respiratory support optimization, patent ductus arteriosus (PDA) and atrial septal defect (ASD) closure (40% PDA, 5% ASD, 3% both), and limited use of pulmonary vasodilators (8%), all infants demonstrated resolution of PH during the follow-up period, including three (5%) who later died from non-BPD-PH morbidities. Neither SGA status nor the timing of PH diagnosis (<36 vs. ≥36 weeks PMA) impacted the time to BPD-PH resolution in our cohort [median 72 days (IQR 30.5-166.5)]. Conclusion Our multidisciplinary, systematic approach to BPD-PH management was associated with complete resolution of PH with lower mortality despite less sildenafil use than reported in comparable cohorts. Unique features of our approach included aggressive PDA and ASD device closure and rare initiation of sildenafil only after lack of BPD-PH improvement with respiratory support optimization and diagnostic confirmation by cardiac catheterization.
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Affiliation(s)
- Delphine Yung
- Division of Cardiology, Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States
| | - Emma O. Jackson
- Heart Center, Seattle Children’s Hospital, Seattle, WA, United States
| | - Alyssa Blumenfeld
- Department of Pediatrics, University of Washington, Seattle, WA, United States
| | - Gregory Redding
- Division of Pulmonology, Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States
| | - Robert DiGeronimo
- Division of Neonatology, Department of Pediatrics, University of Washington School of Medicine, and Seattle Children’s Hospital, Seattle, WA, United States
| | - John K. McGuire
- Division of Critical Care Medicine, Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States
| | - Meredith Riker
- Heart Center, Seattle Children’s Hospital, Seattle, WA, United States
| | - William Tressel
- Collaborative Health Studies Coordinating Center, Department of Biostatistics, University of Washington, Seattle, WA, United States
| | - Sara Berkelhamer
- Division of Neonatology, Department of Pediatrics, University of Washington School of Medicine, and Seattle Children’s Hospital, Seattle, WA, United States
| | - Laurie C. Eldredge
- Division of Pulmonology, Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States
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Jeremiasen I, Tran-Lundmark K, Dolk M, Naumburg E. Outpatient prescription of pulmonary vasodilator therapy to preterm children with bronchopulmonary dysplasia. Acta Paediatr 2023; 112:409-416. [PMID: 36478302 PMCID: PMC10108203 DOI: 10.1111/apa.16615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 11/28/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
AIM The use of pulmonary vasodilator therapy in children born preterm is largely unknown. Our aim was to map prescription patterns in children with bronchopulmonary dysplasia in Sweden. METHODS This was a descriptive national registry-based study of children <7 years who had been prescribed a pulmonary vasodilator during 2007-2017, were born preterm and classified as having bronchopulmonary dysplasia. Information on prescriptions, patient characteristics and comorbidities were retrieved from the Swedish Prescribed Drug Register and linked to other national registers. RESULTS The study included 74 children, 54 (73%) born at 22-27 weeks' gestation and 20 (27%) at 28-36 weeks. Single therapy was most common, n = 64 (86.5%), and sildenafil was prescribed most frequently, n = 69 (93%). Bosentan, iloprost, macitentan and/or treprostinil were used mainly for combination therapies, n = 10 (13.5%). Patent ductus arteriosus or atrial septal defect were present in 29 (39%) and 25 (34%) children, respectively, and 20 (69%) versus 3 (12%) underwent closure. Cardiac catheterisation was performed in 19 (26%) patients. Median duration of therapy was 4.6 (1.9-6.8, 95% CI) months. Mortality was 9%. CONCLUSION Preterm children with bronchopulmonary dysplasia were prescribed pulmonary vasodilators, often without prior catheterisation. Sildenafil was most commonly used. Diagnostic tools, effects, and drug safety need further evaluation.
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Affiliation(s)
- Ida Jeremiasen
- Department of Experimental Medical Science, Lund University, Lund, Sweden.,The Paediatric Heart Centre, Skåne University Hospital, Lund, Sweden
| | - Karin Tran-Lundmark
- Department of Experimental Medical Science, Lund University, Lund, Sweden.,The Paediatric Heart Centre, Skåne University Hospital, Lund, Sweden.,Wallenberg Centre for Molecular Medicine, Lund University, Lund, Sweden
| | - Mikaela Dolk
- Department of Experimental Medical Science, Lund University, Lund, Sweden.,The Paediatric Heart Centre, Skåne University Hospital, Lund, Sweden
| | - Estelle Naumburg
- Department of Clinical Sciences, Paediatrics, Umeå University, Umeå, Sweden
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Assessment of lung ventilation of premature infants with bronchopulmonary dysplasia at 1.5 Tesla using phase-resolved functional lung magnetic resonance imaging. Pediatr Radiol 2023; 53:1076-1084. [PMID: 36737516 DOI: 10.1007/s00247-023-05598-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 12/15/2022] [Accepted: 01/11/2023] [Indexed: 02/05/2023]
Abstract
BACKGROUND The most common chronic complication of preterm birth is bronchopulmonary dysplasia (BPD), widely referred to as chronic lung disease of prematurity. All current definitions rely on characterizing the disease based on respiratory support level and do not provide full understanding of the underlying cardiopulmonary pathophysiology. OBJECTIVE To evaluate a rapid functional lung imaging technique in premature infants and to quantitate pulmonary ventilation using 1.5 Tesla magnetic resonance imaging (MRI). MATERIALS AND METHODS We conducted a prospective MRI study of 12 premature infants in the neonatal intensive care unit (NICU) using the phase resolved functional lung MRI technique to calculate pulmonary ventilation parameters in preterm infants with and without BPD grade 0/1 (n = 6) and grade 2/3 (n = 6). RESULTS The total ventilation defect percentage showed a significant difference between groups (16.0% IQR (11.0%,18%) BPD grade 2/3 vs. 8.0% IQR (4.5%,9.0%) BPD grade 0/1, p = 0.01). CONCLUSION Phase-resolved functional lung MRI is feasible for assessment of ventilation defect percentages in preterm infants and shows regional variation in localized lung function in this population.
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Wang J, Zhang A, Huang F, Xu J, Zhao M. MSC-EXO and tempol ameliorate bronchopulmonary dysplasia in newborn rats by activating HIF-1α. Pediatr Pulmonol 2023; 58:1367-1379. [PMID: 36650825 DOI: 10.1002/ppul.26317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 12/25/2022] [Accepted: 01/15/2023] [Indexed: 01/19/2023]
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) is a major complication of premature infants and an important cause of morbidity and mortality. This study investigates the effect of the combination of mesenchymal stem cells-derived exosomes (MSC-EXO) and tempol on BPD and analyzes its mechanism. METHODS MSC-EXO was extracted by centrifugation and identified by transmission electron microscopy (TEM), nanoparticle tracking analysis, and western blot analysis (WB). Tidal volume (TV), minute ventilation (MV), peak inspiratory flow (PIF), and dynamic pulmonary compliance (Cdyn) of rats were measured by BuxCo pulmonary function experimental platform. Hematoxylin-eosin staining was performed to observe the lung morphology and radical alveolar count (RAC) and mean linear intercept (MLI) were assessed. Immunofluorescence (IF) was conducted to detect the expression of CD31 and α-SMA in pulmonary blood vessels. The kits were used to calculate malondialdehyde (MDA), superoxide dismutase (SOD), and total antioxidant capacity (TAOC) concentration in lung tissue. Enzyme linked immunosorbent assay was applied to detect the levels of IL-1β, IL-17, IL-6, and IFN-γ in bronchoalveolar lavage fluid. In addition, the expressions of HIF-1α, vascular endothelial growth factor (VEGF), p-PI3K, and p-AKT were analyzed by WB and IF. RESULTS We successfully extracted and identified MSC-EXO. In BPD rats, TV, MV, PIF, and Cdyn decreased, alveoli were simplified, and the number of interalveoli small vessels, blood vessel density decreased. Moreover, RAC, CD31, TAOC, and SOD decreased, and MLI, α-SMA, MDA, IL-1β, IL-17, IL-6, and IFN-γ increased, which was reversed by the combination of MSC-EXO and tempol treatment after combined treatment. In addition, the expression levels of HIF-1α, VEGF, p-PI3K, and p-AKT were increased after combined treatment. CONCLUSIONS Combined treatment could improve lung tissue injury, promote pulmonary vascular remodeling, restore lung function, and inhibit oxidative stress in BPD rats. These effects were achieved through activation of HIF-1α.
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Affiliation(s)
- Juanmei Wang
- Department of Pediatrics, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, China.,Hunan Provincial Key Laboratory of Pediatric Respirology, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, China
| | - Aimin Zhang
- Department of Pediatrics, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, China
| | - Furong Huang
- Department of Pediatrics, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, China
| | - Jun Xu
- Department of Pediatrics, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, China
| | - Menghua Zhao
- Department of Pediatrics, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, China
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Sánchez-Becerra JC, Guillén-Torres R, Becerra-Becerra R, Márquez-González H, Ibarra-Ríos D. Targeted neonatal echocardiography and lung ultrasound in preterm infants with chronic lung disease with and without pulmonary hypertension, screened using a standardized algorithm. Front Pediatr 2023; 11:1104940. [PMID: 37033165 PMCID: PMC10076703 DOI: 10.3389/fped.2023.1104940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 02/27/2023] [Indexed: 04/11/2023] Open
Abstract
Introduction Increased recognition of the development of chronic pulmonary hypertension (cPH) in preterm infants with chronic lung disease (CLD) has prompted enhanced monitoring for the identification of different phenotypes. Methods All newborns consulted for oxygen/respiratory support dependency (CLD assessment) from January 2018 to December 2021 were included. TnECHO and LUS screening for cPH-CLD were performed at 36 weeks postmenstrual age. Cases of cPH related to increased pulmonary blood flow (cPH-IPBF) were referred to Pediatric Cardiology. The objective of the study was to identify all cases of cPH (cPH-CLD/IPBF) in the CLD patients screened and to compare outcomes. Following a standardized algorithm, cPH-CLD patients were treated with diuretics; ultrasounds taken before and after treatment were analyzed. Results Seventy-two patients with CLD were screened. Twenty-two (30%) had cPH-CLD, and nine (12%) had cPH-IPBF. cPH infants underwent more days of mechanical ventilation, were more likely to have retinopathy of prematurity, and showed increased mortality. The LUS pattern observed in the 72 CLD patients consisted of a thickened pleural line and a B-line interstitial heterogeneous pattern; 29% of patients were found to have lung consolidations. After diuretic therapy, step-down in respiratory support occurred in 59% of neonates with cPH-CLD. A decrease in respiratory rate (RR), right ventricular output (RVO), markers of pulmonary vascular resistance (PVR), and B-line pattern was observed. In tissue Doppler imaging, biventricular diastolic function was found to be modified after diuretics. Conclusions CLD infants with cPH showed increased morbidity and mortality. In cPH-CLD patients, a decrease in RR and step-down in respiratory support was observed after diuretic treatment. Follow-up ultrasound showed a decrease in RVO, markers of PVR, and B-lines.
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Affiliation(s)
| | - Rogelio Guillén-Torres
- Neonatology Department, National Institute of Health, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Rosario Becerra-Becerra
- Cardiology Department, National Institute of Health, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Horacio Márquez-González
- Clinical Investigation Department, National Institute of Health, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Daniel Ibarra-Ríos
- Neonatology Department, National Institute of Health, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
- Correspondence: Daniel Ibarra-Ríos
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Li J, Zhao J, Yang XY, Shi J, Liu HT. Successful treatment of pulmonary hypertension in a neonate with bronchopulmonary dysplasia: A case report and literature review. World J Clin Cases 2022; 10:11898-11907. [PMID: 36405256 PMCID: PMC9669840 DOI: 10.12998/wjcc.v10.i32.11898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/03/2022] [Accepted: 10/11/2022] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Pulmonary hypertension (PH) is a severe complication of bronchopulmonary dysplasia (BPD) in premature neonates and is closely related to prognosis. However, there is no effective and safe treatment for PH due to BPD in infants. Successful treatment for cases of BPD-associated PH with Tadalafil combined with bosentan is rare. This case may make a significant contribution to the literature because PH is difficult to manage as a serious complication of BPD in preterm infants. Mortality is high, especially when it is complicated by heart failure.
CASE SUMMARY An extremely premature neonate with a gestational age of 26+5 wk and birth weight of 0.83 kg was diagnosed with BPD associated with PH; oral sildenafil did not improve the PH. The infant experienced sudden cardiac arrest and serious heart failure with severe PH. After a series of treatments, including cardiopulmonary resuscitation, mechanical ventilation, and inhaled nitric oxide (iNO), the respiratory and circulatory status improved but the pulmonary artery pressure remained high. Then oral sildenafil was replaced with oral tadalafil and bosentan; pulmonary artery pressure improved, and the infant recovered at our hospital. After 2 years of follow-up, she is in good condition, without any cardiovascular complications.
CONCLUSION INO can effectively improve the respiratory and circulatory status of infants with PH associated with premature BPD. B-type natriuretic peptide should be routinely measured during hospitalization to evaluate the risk and prognosis of BPD-associated PH in preterm infants. Tadalafil combined with bosentan for the treatment of PH associated with premature BPD was better than sildenafil in this case. Further studies are needed to explore the efficacy and safety of different vasodilators in the treatment of PH associated with premature BPD.
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Affiliation(s)
- Jiao Li
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Jing Zhao
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Xiao-Yan Yang
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Jing Shi
- Neonatal Ward, West China Second University Hospital, Sichuan University, Chengdu 610066, Sichuan Province, China
| | - Hai-Ting Liu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
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Levy PT, Levin J, Leeman KT, Mullen MP, Hansmann G, Kourembanas S. Diagnosis and management of pulmonary hypertension in infants with bronchopulmonary dysplasia. Semin Fetal Neonatal Med 2022; 27:101351. [PMID: 35641413 DOI: 10.1016/j.siny.2022.101351] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Chronic pulmonary hypertension of infancy (cPHi) is a heterogeneous disease process that contributes to morbidity and mortality in preterm infants. cPHi is most commonly associated with chronic lung disease of prematurity and represents a unique phenotype of bronchopulmonary dysplasia. It is characterized by persistently elevated or newly rising pulmonary vascular resistance and pulmonary artery pressure beyond the first weeks of age. The high-pressure afterload on the right ventricle may or may not be tolerated, depending upon additional cardiovascular shunting and co-morbidities. A comprehensive clinical evaluation combined with advanced hemodynamic assessment by echocardiography and other cardiac imaging modalities help decipher the etiopathologies of disease, identify cardiopulmonary compromise earlier and guide individualized therapeutic intervention tailored by the phenotype. This review summarizes the underlying etiologies, risk factors for development, hemodynamic assessment, management, and follow-up of cPHi in preterm infants. We offer an algorithm for early detection of cPHi and outline research priorities.
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Affiliation(s)
- Philip T Levy
- Division of Newborn Medicine, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA.
| | - Jonathan Levin
- Division of Newborn Medicine, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA.
| | - Kristen T Leeman
- Division of Newborn Medicine, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA.
| | - Mary P Mullen
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
| | - Georg Hansmann
- Department of Pediatric Cardiology and Critical Care, Hannover Medical School, Hanover, Germany.
| | - Stella Kourembanas
- Division of Newborn Medicine, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA.
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Prematurity and Pulmonary Vein Stenosis: The Role of Parenchymal Lung Disease and Pulmonary Vascular Disease. CHILDREN 2022; 9:children9050713. [PMID: 35626890 PMCID: PMC9139735 DOI: 10.3390/children9050713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 04/29/2022] [Accepted: 05/10/2022] [Indexed: 11/25/2022]
Abstract
Pulmonary vein stenosis (PVS) has emerged as a critical problem in premature infants with persistent respiratory diseases, particularly bronchopulmonary dysplasia (BPD). As a parenchymal lung disease, BPD also influences vascular development with associated pulmonary hypertension recognized as an important comorbidity of both BPD and PVS. PVS is commonly detected later in infancy, suggesting additional postnatal factors that contribute to disease development, progression, and severity. The same processes that result in BPD, some of which are inflammatory-mediated, may also contribute to the postnatal development of PVS. Although both PVS and BPD are recognized as diseases of inflammation, the link between them is less well-described. In this review, we explore the relationship between parenchymal lung diseases, BPD, and PVS, with a specific focus on the epidemiology, clinical presentation, risk factors, and plausible biological mechanisms in premature infants. We offer an algorithm for early detection and prevention and provide suggestions for research priorities.
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Buendía JA, Ramírez Velasquez C, Benjumea-Bedoya D. Bronchopulmonary dysplasia: Incidence and severity in premature infants born at high altitude. Pediatr Pulmonol 2022; 57:470-475. [PMID: 34796697 DOI: 10.1002/ppul.25763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/10/2021] [Accepted: 11/12/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) is the most common cause of chronic lung disease in children born prematurely. There is little information about the epidemiology and severity of BPD places with high altitude. This study aimed to evaluate the frequency of BPD severity levels and the associated risk factors with severity in a cohort of preterm newborns ≤36weeks of gestational age born in Rionegro, Colombia MATERIALS AND METHODS: We carried out a retrospective analytical cohort of preterm newborns without major malformations from Rionegro, Colombia between 2011 and 2018 admitted to neonatal intensive unit at high altitude (2200 m above sea level). The main outcomes were the incidence and severity of BPD. RESULTS The BPD incidence was 23.5% 95% (confidence interval [CI], 19.6-27.7). BPD was grade 1 in 69.9%, grade 2 in 15.5% and grade 3 in 14.5% of patients. After modeling regression analysis, the final variables associated with BPD severity levels were: sepsis (odds ratio [OR], 4.15; 95% CI, 1.33-12.96) and pulmonary hypertension (OR: 3.86; 95% CI, 1.30-11.4). CONCLUSION The incidence of BPD was higher and similar to cities with higher altitudes. In our population, the variables associated with BPD severity levels were: sepsis and pulmonary hypertension. It is necessary to increase the awareness of risk factors, the effect of clinical practices, and early recognition of BPD to reduce morbidity in patients with this pathology.
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Affiliation(s)
- Jefferson A Buendía
- Departamento de farmacología y Toxicologia, Grupo de Investigación en Farmacología y Toxicología, Facultad de Medicina, Universidad de Antioquia, Medellin, Colombia
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Sullivan RT, Tandel MD, Bhombal S, Adamson GT, Boothroyd DB, Tracy M, Moy A, Hopper RK. Role of left atrial hypertension in pulmonary hypertension associated with bronchopulmonary dysplasia. Front Pediatr 2022; 10:1012136. [PMID: 36313896 PMCID: PMC9615143 DOI: 10.3389/fped.2022.1012136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 08/24/2022] [Indexed: 11/16/2022] Open
Abstract
Left atrial hypertension (LAH) may contribute to pulmonary hypertension (PH) in premature infants with bronchopulmonary dysplasia (BPD). Primary causes of LAH in infants with BPD include left ventricular diastolic dysfunction or hemodynamically significant left to right shunt. The incidence of LAH, which is definitively diagnosed by cardiac catheterization, and its contribution to PH is unknown in patients with BPD-PH. We report the prevalence of LAH in an institutional cohort with BPD-PH with careful examination of hemodynamic contributors and impact on patient outcomes. This single-center, retrospective cohort study examined children <2 years of age with BPD-PH who underwent cardiac catheterization at Lucile Packard Children's Hospital Stanford. Patients with unrepaired simple shunt congenital heart disease (CHD) and pulmonary vein stenosis (only 1 or 2 vessel disease) were included. Patients with complex CHD were excluded. From April 2010 to December 2021, 34 patients with BPD-PH underwent cardiac catheterization. We define LAH as pulmonary capillary wedge pressure (PCWP) or left atrial pressure (LAP) of at least 10 mmHg. In this cohort, median PCWP was 8 mmHg, with LAH present in 32% (n = 11) of the total cohort. A majority (88%, n = 30) of the cohort had severe BPD. Most patients had some form of underlying CHD and/or pulmonary vein stenosis: 62% (n = 21) with an atrial septal defect or patent foramen ovale, 62% (n = 21) with patent ductus arteriosus, 12% (n = 4) with ventricular septal defect, and 12% (n = 4) with pulmonary vein stenosis. Using an unadjusted logistic regression model, baseline requirement for positive pressure ventilation at time of cardiac catheterization was associated with increased risk for LAH (odds ratio 8.44, 95% CI 1.46-48.85, p = 0.02). Small for gestational age birthweight, sildenafil use, and CHD were not associated with increased risk for LAH. LAH was associated with increased risk for the composite outcome of tracheostomy and/or death, with a hazard ratio of 6.32 (95% CI 1.72, 22.96; p = 0.005). While the etiology of BPD-PH is multifactorial, LAH is associated with PH in some cases and may play a role in clinical management and patient outcomes.
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Affiliation(s)
- Rachel T Sullivan
- Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Megha D Tandel
- Quantitative Sciences Unit, Department of Medicine, School of Medicine, Stanford University, Palo Alto, CA, United States
| | - Shazia Bhombal
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, School of Medicine, Stanford University, Palo Alto, CA, United States
| | - Gregory T Adamson
- Division of Pediatric Cardiology, Department of Pediatrics, School of Medicine, Stanford University, Palo Alto, CA, United States
| | - Derek B Boothroyd
- Quantitative Sciences Unit, Department of Medicine, School of Medicine, Stanford University, Palo Alto, CA, United States
| | - Michael Tracy
- Division of Pulmonary Medicine, Department of Pediatrics, School of Medicine, Stanford University, Palo Alto, CA, United States
| | - Amanda Moy
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, School of Medicine, Stanford University, Palo Alto, CA, United States
| | - Rachel K Hopper
- Division of Pediatric Cardiology, Department of Pediatrics, School of Medicine, Stanford University, Palo Alto, CA, United States
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