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Abstract
Bronchopulmonary dysplasia (BPD) remains the most common complication of premature birth, imposing a significant and potentially life-long burden on patients and their families. Despite advances in our understanding of the mechanisms that contribute to patterns of lung injury and dysfunctional repair, current therapeutic strategies remain non-specific with limited success. Contemporary definitions of BPD continue to rely on clinician prescribed respiratory support requirements at specific time points. While these criteria may be helpful in broadly identifying infants at higher risk of adverse outcomes, they do not offer any precise information regarding the degree to which each compartment of the lung is affected. In this review we will outline the different pulmonary phenotypes of BPD and discuss important features in the pathogenesis, clinical presentation, and management of these frequently overlapping scenarios.
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Affiliation(s)
- Margaret Gilfillan
- Division of Neonatology, St. Christopher's Hospital for Children/Drexel University College of Medicine, Philadelphia, PA, USA
| | - Vineet Bhandari
- Division of Neonatology, The Children's Regional Hospital at Cooper/Cooper Medical School of Rowan University, Camden, NJ 08103, USA.
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2
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Goth FEM, Green K, Hansen BM, Agertoft L, Jørgensen IM. From neonatal lung function to lung function and respiratory morbidity at 6-year follow-up. Pediatr Pulmonol 2023; 58:566-576. [PMID: 36349430 PMCID: PMC10098878 DOI: 10.1002/ppul.26240] [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: 02/02/2022] [Revised: 10/20/2022] [Accepted: 11/04/2022] [Indexed: 11/11/2022]
Abstract
BACKGROUND Lung function is traceable from infancy to adulthood. Only a few studies have examined lung function from birth to childhood longitudinally in children born moderate to late preterm. We aimed to investigate how prematurity and lung function in the neonatal period are related to lung function and respiratory morbidity at age 6 in former moderate to late preterm children compared with children born at term. METHODS Lung function was measured in a cohort of moderately to late preterm (n = 48) and term-born (n = 53) infants in the neonatal period by FeNO, and tidal breathing flow-volume loops (TBFVL) and at age 6 (n = 52) by spirometry, whole-body plethysmograph and impulse oscillation combined with a respiratory symptom questionnaire. RESULTS Moderate to late preterm children had a higher TPEF /TE ratio neonatally (42.6% vs. 33.7%, p = 0.02) and a lower % predicted orced expiratory volume in the first second at age 6 (94.4% vs. 101.9%, p = 0.01) compared to term-born children. We found a significant association between the variability of neonatal tidal volume and effective airway resistance at age 6 (β = -0.34, p = 0.03). No association between neonatal FeNO or TBFVL and respiratory morbidity at 6-year follow-up was shown. CONCLUSION Children born moderate to late preterm had lower lung function at age 6 than term-born children. We did not find evidence for the use of neonatal tidal breathing parameters as a predictor for subsequent respiratory morbidity or lung function, however sample size was small.
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Affiliation(s)
- Fanny E M Goth
- Department of Pediatrics and Adolescence Medicine, Nordsjaellands Hospital, Hillerod, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Kent Green
- Department of Pediatrics and Adolescence Medicine, Nordsjaellands Hospital, Hillerod, Denmark
| | - Bo M Hansen
- Department of Pediatrics and Adolescence Medicine, Nordsjaellands Hospital, Hillerod, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lone Agertoft
- Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark
| | - Inger M Jørgensen
- Department of Pediatrics and Adolescence Medicine, Nordsjaellands Hospital, Hillerod, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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3
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Dassios T. Critical functional lung volumes in neonatal intensive care: evidence and clinical applications. Pediatr Res 2023:10.1038/s41390-022-02450-9. [PMID: 36624281 DOI: 10.1038/s41390-022-02450-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 11/08/2022] [Accepted: 12/14/2022] [Indexed: 01/11/2023]
Abstract
Respiratory disease is common in premature and sick newborn infants and can often necessitate the initiation of intensive care. Newborn infants often suffer from conditions that are associated with decreased lung volumes that occur as a result of abnormal or incomplete lung development. Such conditions are prematurity and respiratory distress syndrome, preterm premature rupture of membranes and the ensuing pulmonary hypoplasia and congenital lung anomalies such as congenital diaphragmatic hernia. These diseases have a structural component manifesting with lower lung volumes and a functional component that can present with increased oxygen and ventilatory requirements. The corresponding decreased functional lung volume is possibly responsible for some unfavourable pulmonary outcomes. Some infants are unable to wean off invasive respiratory support and, in extreme cases, unable to sustain independent breathing that can lead to long-term invasive ventilation or subsequent death. The aim of this review is to summarise the available evidence behind the concept of a critical functional lung volume in neonatal intensive care and describe the clinical implications that arise from decreased functional lung volumes in the main high-risk populations of newborn infants. IMPACT: Newborn infants suffer from diseases such as respiratory distress syndrome, pulmonary hypoplasia and congenital diaphragmatic hernia that are associated with a decrease in the total lung volume and impaired lung function. Critically decreased functional lung volumes during neonatal care are associated with failure to wean off invasive respiratory support, increased mortality and possibly longer-term respiratory complications.
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Affiliation(s)
- Theodore Dassios
- Neonatal Intensive Care Centre, King's College Hospital NHS Foundation Trust, London, UK. .,Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK.
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4
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Prematurity-associated wheeze: current knowledge and opportunities for further investigation. Pediatr Res 2022:10.1038/s41390-022-02404-1. [PMID: 36463364 PMCID: PMC10238677 DOI: 10.1038/s41390-022-02404-1] [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: 08/16/2022] [Revised: 11/03/2022] [Accepted: 11/08/2022] [Indexed: 12/04/2022]
Abstract
Prematurity-associated wheeze is a common complication of preterm birth, with significant impact on the health and healthcare utilization of former preterm infants. This wheezing phenotype remains poorly understood and difficult to predict. This review will discuss the current state of the literature on prematurity-associated wheeze. We will discuss etiology and pathophysiology, and offer two conceptual models for the pathogenesis of this complex condition. This review will also identify current methods of ascertainment, and discuss the strengths and limitations of each. We will explore research-backed approaches to prevention and management, and finally suggest both pre-clinical and clinical avenues for investigation. An in-depth understanding of prematurity-associated wheeze will aid clinicians in its diagnosis and management, and inspire scientists to pursue much-needed further study into causes and prevention of this common and impactful condition. IMPACT: There is no recent, concise review on the current state of research on prematurity-associated wheeze, which is a rapidly evolving area of study. This article highlights causal models of wheeze, methods of ascertainment, management strategies for the clinician, and opportunities for further research for the physician scientist.
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5
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Tuková J, Koucký V, Marková D, Koťátko P, Hladíková M, Šulc J. Symptomatic preterm infants suffer from lung function deficits, regardless of bronchopulmonary dysplasia. Pediatr Pulmonol 2022; 57:3119-3128. [PMID: 36097859 DOI: 10.1002/ppul.26144] [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: 02/09/2022] [Revised: 07/27/2022] [Accepted: 09/08/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND The long-term respiratory consequences for children with bronchopulmonary dysplasia (BPD) are well known. However, there is little emphasis on monitoring preterm infants without BPD. Few studies have explored the lung function status of infants with the symptoms of chronic lung disease of prematurity (CLD). OBJECTIVE To evaluate functional lung deficits in preterm infants with CLD, and to assess the perinatal determinants of diminished lung function. METHODS In our cross-sectional study, 132 preterm infants with symptomatic CLD underwent infant pulmonary function testing (iPFT) at a median post-term age of 0.9 years. The iPFT included bodypletysmography, compliance measurement, tidal breath analysis, and rapid thoracoabdominal compression. The relationships between the respective z scores of the iPFT parameters and perinatal characteristics, postnatal treatment, and BPD status were investigated. RESULTS Seventy-three patients (55.3%) were born before the 28th week of gestation, and 92 (69.7%) met the BPD criteria. Functional deficits were detected in 85.8%. The obstructive ventilatory pattern was more prevalent than restrictive (36.3 vs. 12.4%, p < 0.001). Infants with restriction had lower birth weight (BW) and required a longer duration of oxygenotherapy. In a univariate model, the lung function correlated with the duration of invasive mechanical ventilation, gestational week, and BW. In a general linear model, BPD status was not an additional determinant of the iPFT results. CONCLUSION IPFT may reveal significant functional deficits in preterm infants with CLD even without BPD. The current symptoms and perinatal factors may be more important determinants of functional deficits than the BPD status itself.
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Affiliation(s)
- Jana Tuková
- Department of Paediatrics and Inborn Metabolic Diseases, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Václav Koucký
- Department of Paediatrics, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
| | - Daniela Marková
- Department of Paediatrics and Inborn Metabolic Diseases, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Petr Koťátko
- Department of Paediatrics and Inborn Metabolic Diseases, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Marie Hladíková
- Department of Paediatrics and Inborn Metabolic Diseases, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Jan Šulc
- Department of Paediatrics and Inborn Metabolic Diseases, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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6
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Muttoo S, Jeena PM, Röösli M, de Hoogh K, Meliefste K, Tularam H, Olin AC, Carlsen HK, Mentz G, Asharam K, Naidoo RN. Effect of short-term exposure to ambient nitrogen dioxide and particulate matter on repeated lung function measures in infancy: A South African birth cohort. ENVIRONMENTAL RESEARCH 2022; 213:113645. [PMID: 35700764 DOI: 10.1016/j.envres.2022.113645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 06/02/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The developing lung is highly susceptible to environmental toxicants, with both short- and long-term exposure to ambient air pollutants linked to early childhood effects. This study assessed the short-term exposure effects of nitrogen dioxide (NO2) and particulate matter (PM10) on lung function in infants aged 6 weeks, 6, 12 and 24 months, the early developmental phase of child growth. METHODS Lung function was determined by multiple breath washout and tidal breathing measurement in non-sedated infants. Individual exposure to NO2 and PM10 was determined by hybrid land use regression and dispersion modelling, with two-week average estimates (preceding the test date). Linear mixed models were used to adjust for the repeated measures design and an age*exposure interaction was introduced to obtain effect estimates for each age group. RESULTS There were 165 infants that had lung function testing, with 82 of them having more than one test occasion. Exposure to PM10 (μg/m3) resulted in a decline in tidal volume at 6 weeks [-0.4 ml (-0.9; 0.0), p = 0.065], 6 months [-0.5 ml (-1.0; 0.0), p = 0.046] and 12 months [-0.3 ml (-0.7; 0.0), p = 0.045]. PM10 was related to an increase in respiratory rate and minute ventilation, while a decline was observed for functional residual capacity for the same age groups, though not statistically significant for these outcomes. Such associations were however less evident for exposure to NO2, with inconsistent changes observed across measurement parameters and age groups. CONCLUSION Our study suggests that PM10 results in acute lung function impairments among infants from a low-socioeconomic setting, while the association with NO2 is less convincing.
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Affiliation(s)
- S Muttoo
- Discipline of Occupational and Environmental Health, University of KwaZulu-Natal, Durban, South Africa.
| | - P M Jeena
- Discipline of Paediatrics and Child Health, University of KwaZulu-Natal, Durban, South Africa.
| | - M Röösli
- Swiss Tropical and Public Health Institute, Basel, Switzerland.
| | - K de Hoogh
- Swiss Tropical and Public Health Institute, Basel, Switzerland.
| | - K Meliefste
- Institute for Risk Assessment Sciences, Utrecht, the Netherlands.
| | - H Tularam
- Discipline of Occupational and Environmental Health, University of KwaZulu-Natal, Durban, South Africa.
| | - A C Olin
- Department of Occupational and Environmental Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden.
| | - H K Carlsen
- Department of Occupational and Environmental Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden.
| | - G Mentz
- University Michigan, Ann Arbor, MI, USA.
| | - K Asharam
- Discipline of Occupational and Environmental Health, University of KwaZulu-Natal, Durban, South Africa.
| | - R N Naidoo
- Discipline of Occupational and Environmental Health, University of KwaZulu-Natal, Durban, South Africa.
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Dassios T, Adu J, Greenough A. Brief research report: Chest radiographic thoracic area in term ventilated infants without respiratory disease. Front Pediatr 2022; 10:1042341. [PMID: 36699308 PMCID: PMC9869030 DOI: 10.3389/fped.2022.1042341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 12/19/2022] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVE To report values of the chest radiographic thoracic area (CRTA) in ventilated, term-born infants without respiratory disease and to evaluate whether CRTA is related to demographic data at birth. METHODS Retrospective, observational cohort study in a tertiary neonatal unit at King's College Hospital NHS Foundation Trust, London, UK.Newborn infants born after 36 completed weeks of gestation, ventilated for poor perinatal adaptation or hypoxic ischaemic encephalopathy without respiratory disease and admitted in a recent eight-year period (2014-2022).The CRTA was assessed by free-hand tracing of the perimeter of the thoracic area as outlined by the diaphragm and the rib cage excluding the mediastinal structures and was calculated using the Sectra PACS software. RESULTS One hundred and twenty-one infants (75 male) were included with a median (IQR) gestation of 40 (38-41) weeks and birth weight of 3.41 (3.04-3.75) kg. The median (IQR) CRTA was 2,589 (2,167-2,943) mm2 and was significantly related to birth weight (r = 0.316, p = 0.003), gestation at birth (r = 0.193, p = 0.032) and birth weight z-score (r = 0.187, p = 0.038). CONCLUSIONS We report values of the chest radiographic thoracic area in ventilated term-born infants which could be used as reference for determining respiratory disease severity.
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Affiliation(s)
- Theodore Dassios
- Neonatal Intensive Care Centre, King's College Hospital NHS Foundation Trust, London, United Kingdom.,Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - John Adu
- Department of Radiology, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Anne Greenough
- Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom.,National Institute for Health Research (NIHR) Biomedical Research Centre Based at Guy's and St Thomas' NHS Foundation Trust and King's College, London, United Kingdom
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8
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Decrue F, Gorlanova O, Salem Y, Vienneau D, de Hoogh K, Gisler A, Usemann J, Korten I, Nahum U, Sinues P, Schulzke S, Fuchs O, Latzin P, Röösli M, Frey U. Increased Impact of Air Pollution on Lung Function in Preterm versus Term Infants: The BILD Study. Am J Respir Crit Care Med 2022; 205:99-107. [PMID: 34587471 DOI: 10.1164/rccm.202102-0272oc] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Rationale: Infants born prematurely have impaired capacity to deal with oxidative stress shortly after birth. Objectives: We hypothesize that the relative impact of exposure to air pollution on lung function is higher in preterm than in term infants. Methods: In the prospective BILD (Basel-Bern Infant Lung Development) birth cohort of 254 preterm and 517 term infants, we investigated associations of particulate matter ⩽10 μm in aerodynamic diameter (PM10) and nitrogen dioxide with lung function at 44 weeks' postconceptional age and exhaled markers of inflammation and oxidative stress response (fractional exhaled nitric oxide [FeNO]) in an explorative hypothesis-driven study design. Multilevel mixed-effects models were used and adjusted for known confounders. Measurements and Main Results: Significant associations of PM10 during the second trimester of pregnancy with lung function and FeNO were found in term and preterm infants. Importantly, we observed stronger positive associations in preterm infants (born 32-36 wk), with an increase of 184.9 (95% confidence interval [CI], 79.1-290.7) ml/min [Formula: see text]e per 10-μg/m3 increase in PM10, than in term infants (75.3; 95% CI, 19.7-130.8 ml/min) (pprematurity × PM10 interaction = 0.04, after multiple comparison adjustment padj = 0.09). Associations of PM10 and FeNO differed between moderate to late preterm (3.4; 95% CI, -0.1 to 6.8 ppb) and term (-0.3; 95% CI, -1.5 to 0.9 ppb) infants, and the interaction with prematurity was significant (pprematurity × PM10 interaction = 0.006, padj = 0.036). Conclusions: Preterm infants showed significantly higher susceptibility even to low to moderate prenatal air pollution exposure than term infants, leading to increased impairment of postnatal lung function. FeNO results further elucidate differences in inflammatory/oxidative stress response when comparing preterm infants with term infants.
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Affiliation(s)
- Fabienne Decrue
- University Children's Hospital Basel UKBB.,Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Olga Gorlanova
- University Children's Hospital Basel UKBB.,Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Yasmin Salem
- University Children's Hospital Basel UKBB.,Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Danielle Vienneau
- University of Basel, Basel, Switzerland.,Swiss Tropical and Public Health Institute Basel, Basel, Switzerland
| | - Kees de Hoogh
- University of Basel, Basel, Switzerland.,Swiss Tropical and Public Health Institute Basel, Basel, Switzerland
| | | | - Jakob Usemann
- University Children's Hospital Basel UKBB.,Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Division of Respiratory Medicine, University Children's Hospital of Zürich, Zürich, Switzerland; and
| | - Insa Korten
- University Children's Hospital Basel UKBB.,Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Uri Nahum
- University Children's Hospital Basel UKBB.,Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Pablo Sinues
- University Children's Hospital Basel UKBB.,Department of Biomedical Engineering, University of Basel, Allschwil, Switzerland
| | | | - Oliver Fuchs
- University Children's Hospital Basel UKBB.,Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Philipp Latzin
- University Children's Hospital Basel UKBB.,Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Martin Röösli
- University of Basel, Basel, Switzerland.,Swiss Tropical and Public Health Institute Basel, Basel, Switzerland
| | - Urs Frey
- University Children's Hospital Basel UKBB.,Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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9
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Beretta F, Lavizzari A, Pesenti N, Arkhangelskaia T, Ciuffini F, Ophorst M, Gangi S, Colnaghi M, Morniroli D, Mosca F, Giannì ML. Effect of human milk and other neonatal variables on lung function at three months corrected age. Pediatr Pulmonol 2021; 56:3832-3838. [PMID: 34407314 DOI: 10.1002/ppul.25625] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/13/2021] [Accepted: 08/04/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To evaluate the impact of human milk and different neonatal variables on tidal breathing flow-volume loop (TBFVL) parameters within three months' corrected age (CA) in infants born ≤32 wks or weighing <1500 g. METHODS We retrospectively studied 121 infants with gestational age (GA) ≤ 32 weeks or birth weight (BW) <1500 gr who had lung function assessment within three months' CA by TBFVL analysis between June 2009 and April 2018. We investigated the impact of GA, gender, being Small for GA (SGA), sepsis, days of mechanical ventilation (MV) and human milk feeding (HMF) on later respiratory function, both in the entire group and according to BW ( ≤1000 g and >1000 g). RESULTS The mean(SD) z-score for tidal volume (Vt) and time to peak expiratory flow to expiratory time (tPTEF/tE) were respectively -4.3 (2.5) and -0.8 (2.0) for the overall population with no significant differences between infants <1000 g or ≥1000 g. The mean(SD) Vt standardized for body weight was 6.2(2.0) ml/kg. Being female was associated with better Vt/Kg, whereas longer MV or being born SGA were associated with worst tPTEF/tE. For infants with BW < 1000 gr, tPTEF/tE was positively associated with HMF. CONCLUSION An early TBFVL assessment within three months' CA already reveals lung function alteration in preterm infants. Being female is associated with better Vt/Kg, while longer duration of MV or being born SGA negatively affect tPTEF/tE. The positive association between HMF and better tPTEF/tE in infants with BW <1000 g has emerged, which deserves further investigation.
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Affiliation(s)
- Francesco Beretta
- Neonatal Intensive Care Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Anna Lavizzari
- Neonatal Intensive Care Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Nicola Pesenti
- Department of Statistics and Quantitative Methods, Division of Biostatistics, Epidemiology and Public Health, University of Milano-Bicocca, Milan, Italy
| | - Taja Arkhangelskaia
- Neonatal Intensive Care Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Francesca Ciuffini
- Neonatal Intensive Care Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Marijke Ophorst
- Neonatal Intensive Care Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Silvana Gangi
- Neonatal Intensive Care Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Mariarosa Colnaghi
- Neonatal Intensive Care Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Daniela Morniroli
- Neonatal Intensive Care Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Fabio Mosca
- Neonatal Intensive Care Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Maria L Giannì
- Neonatal Intensive Care Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
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10
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Shin SH, Shin JS, Kim EK, Kim HS. Capillary partial pressure of carbon dioxide for predicting rehospitalization in preterm infants under noninvasive respiratory support with severe bronchopulmonary dysplasia. Pediatr Pulmonol 2021; 56:3863-3869. [PMID: 34547833 DOI: 10.1002/ppul.25672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 09/07/2021] [Accepted: 09/10/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND The severity of bronchopulmonary dysplasia (BPD) is an important predictor of prognosis in preterm infants. However, the severity of BPD was determined mainly by the degree of oxygen supplementation and mode of respiratory support. OBJECTIVES This retrospective study aimed to examine the role of partial pressure of carbon dioxide (pCO2 ) in predicting rehospitalization among preterm infants with severe BPD without invasive ventilation at 36 weeks' postmenstrual age (PMA). METHODS We assessed preterm infants aged <32 gestational weeks with severe BPD who were receiving noninvasive respiratory support at 36 weeks' PMA. Patients were compared after stratifying them according to the history of rehospitalization owing to respiratory infection before a corrected age (CA) of 1 year and pCO2 measured by capillary blood gas analysis at 36 weeks' PMA. RESULTS Among 54 infants who had severe BPD with noninvasive respiratory support at 36 weeks' PMA, 16 (29.6%) experienced rehospitalization due to respiratory problems. At 36 weeks' PMA, the amount of oxygen supplementation (0.30 vs. 0.28, p = 0.021) and pCO2 (62.1 vs. 53.6 mmHg, p = 0.006) were higher in the rehospitalization group than in the no rehospitalization group. Multivariate logistic analysis findings indicated that pCO2 ≥ 57.4 mmHg was the only factor associated with rehospitalization (adjusted odds ratio: 8.017, 95% confidence interval 1.239-51.859). CONCLUSION High pCO2 during noninvasive respiratory support at 36 weeks' PMA in severe BPD was associated with rehospitalization. Consideration of the degree of impairment in ventilatory capacity may improve the prediction of later respiratory outcomes in infants with BPD.
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Affiliation(s)
- Seung Han Shin
- Department of Pediatrics, Seoul National University, College of Medicine, Seoul, Republic of Korea.,Department of Pediatrics, Seoul National University, Children's Hospital, Seoul, Republic of Korea
| | - Jae-Suk Shin
- Department of Pediatrics, Seoul National University, Children's Hospital, Seoul, Republic of Korea
| | - Ee-Kyung Kim
- Department of Pediatrics, Seoul National University, College of Medicine, Seoul, Republic of Korea.,Department of Pediatrics, Seoul National University, Children's Hospital, Seoul, Republic of Korea
| | - Han-Suk Kim
- Department of Pediatrics, Seoul National University, College of Medicine, Seoul, Republic of Korea.,Department of Pediatrics, Seoul National University, Children's Hospital, Seoul, Republic of Korea
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11
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Rhoads E, Montgomery GS, Ren CL. Wheezing in preterm infants and children. Pediatr Pulmonol 2021; 56:3472-3477. [PMID: 33580622 DOI: 10.1002/ppul.25314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/23/2021] [Accepted: 02/08/2021] [Indexed: 11/10/2022]
Abstract
Wheezing is a common outcome of preterm birth. This article will review the mechanisms, epidemiology, and treatment of wheezing in preterm children with and without a history of bronchopulmonary dysplasia.
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Affiliation(s)
- Eli Rhoads
- Division of Pediatric Pulmonology, Allergy, and Sleep Medicine, Riley Hospital for Children, Indianapolis, Indiana, USA.,Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Gregory S Montgomery
- Division of Pediatric Pulmonology, Allergy, and Sleep Medicine, Riley Hospital for Children, Indianapolis, Indiana, USA.,Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Clement L Ren
- Division of Pediatric Pulmonology, Allergy, and Sleep Medicine, Riley Hospital for Children, Indianapolis, Indiana, USA.,Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana, USA
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12
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Lavizzari A, Zannin E, Ophorst M, Ciuffini F, Gangi S, Farolfi A, Colnaghi M, Dellacà RL, Mosca F. Tidal Breathing Measurements in Former Preterm Infants: A Retrospective Longitudinal Study. J Pediatr 2021; 230:112-118.e4. [PMID: 33253731 DOI: 10.1016/j.jpeds.2020.11.050] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 11/18/2020] [Accepted: 11/23/2020] [Indexed: 12/19/2022]
Abstract
OBJECTIVES To investigate, in infants born preterm with or without bronchopulmonary dysplasia (BPD), the trajectory of tidal breathing flow-volume (TBFV) parameters in the first 2 years of life; the association between TBFV parameters and perinatal risk factors; and the predictive value of TBFV parameters for rehospitalizations due to respiratory infections and wheeze. STUDY DESIGN We retrospectively analyzed TBFV measurements performed at 0-6, 6-12, and 12-24 months of corrected age in 97 infants <32 weeks of gestation and <1500 g. We assessed the association between TBFV parameters and perinatal risk-factors using linear regressions and the predictive capacity for subsequent respiratory morbidity using logistic regressions. We used the area under the curve and likelihood ratio test (LRT) to compare nested models. RESULTS Time to peak tidal expiratory flow/expiratory time ratio (tPTEF/tE) was lower than normal for the first 2 years of corrected age. Longer duration of oxygen supplementation, intubation, and respiratory support were associated with reduced tPTEF/tE at all time points. For each z-score increase in tPTEF/tE, the OR for rehospitalizations decreased by 0.70. tPTEF/tE added significantly to BPD classifications alone in predicting rehospitalizations (area under the receiver operating characteristic curve = 0.81 vs 0.76, P value for LRT = .0012), and wheeze (area under the receiver operating characteristic curve = 0.76 vs 0.71, P value for LRT <.001). CONCLUSIONS Infants born preterm, with and without BPD, display persistent airway obstruction during the first 2 years of life. tPTEF/tE may identify infants at greater risk of severe respiratory morbidity.
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Affiliation(s)
- Anna Lavizzari
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy.
| | - Emanuela Zannin
- Politecnico di Milano University Dipartimento di Elettronica, Informazione e Bioingegneria - DEIB Laboratorio di Tecnologie Biomediche - TBMLab, Milan, Italy
| | - Marijke Ophorst
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Francesca Ciuffini
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Silvana Gangi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Andrea Farolfi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Mariarosa Colnaghi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Raffaele Lorenzo Dellacà
- Politecnico di Milano University Dipartimento di Elettronica, Informazione e Bioingegneria - DEIB Laboratorio di Tecnologie Biomediche - TBMLab, Milan, Italy
| | - Fabio Mosca
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy; Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
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13
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Haggie S, Robinson P, Selvadurai H, Fitzgerald DA. Bronchopulmonary dysplasia: A review of the pulmonary sequelae in the post-surfactant era. J Paediatr Child Health 2020; 56:680-689. [PMID: 32270551 DOI: 10.1111/jpc.14878] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 02/20/2020] [Accepted: 03/11/2020] [Indexed: 01/06/2023]
Abstract
We describe the respiratory complications of bronchopulmonary dysplasia (BPD) in childhood and adolescence. The pathophysiology of bronchopulmonary dysplasia has evolved in the era of modern neonatal intensive care. In this review, we aim to summarise the contemporary evidence base and describe the common respiratory morbidities related to BPD including; home oxygen therapy, rehospitalisation, asthma and exercise limitation.
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Affiliation(s)
- Stuart Haggie
- Department of Respiratory Medicine, the Children's Hospital at Westmead, Sydney, New South Wales, Australia.,Discipline of Child and Adolescent Health, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Paul Robinson
- Department of Respiratory Medicine, the Children's Hospital at Westmead, Sydney, New South Wales, Australia.,Discipline of Child and Adolescent Health, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Hiran Selvadurai
- Department of Respiratory Medicine, the Children's Hospital at Westmead, Sydney, New South Wales, Australia.,Discipline of Child and Adolescent Health, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Dominic A Fitzgerald
- Department of Respiratory Medicine, the Children's Hospital at Westmead, Sydney, New South Wales, Australia.,Discipline of Child and Adolescent Health, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
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14
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Abstract
PURPOSE OF REVIEW To summarize the current literature evaluating long-term pulmonary morbidity among surviving very preterm infants with bronchopulmonary dysplasia (BPD). RECENT FINDINGS BPD predisposes very preterm infants to adverse respiratory signs and symptoms, greater respiratory medication use, and more frequent need for rehospitalization throughout early childhood. Reassuringly, studies also indicate that older children and adolescents with BPD experience, on average, similar functional status and quality of life when compared to former very preterm infants without BPD. However, measured deficits in pulmonary function may persist in those with BPD and indicate an increased susceptibility to early-onset chronic obstructive pulmonary disease during adulthood. Moreover, subtle differences in exercise tolerance and activity may put survivors with BPD at further risk of future morbidity in later life. SUMMARY Despite advances in neonatal respiratory care, a diagnosis of BPD continues to be associated with significant pulmonary morbidity over the first two decades of life. Long-term longitudinal studies are needed to determine if recent survivors of BPD will also be at increased risk of debilitating pulmonary disease in adulthood.
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15
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Decrue F, Gorlanova O, Usemann J, Frey U. Lung functional development and asthma trajectories. Semin Immunopathol 2020; 42:17-27. [PMID: 31989229 DOI: 10.1007/s00281-020-00784-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 01/15/2020] [Indexed: 01/06/2023]
Abstract
Early life environmental risk factors are associated with chronic respiratory morbidity in child- and adulthood. A possible mechanism for this sustained effect is their influence on early life lung functional growth and development, a susceptible phase of rapid lung growth with increased plasticity. We summarize evidence of hereditary and environmental ante-, peri-, and early postnatal factors on lung functional development, such as air pollution, tobacco exposure, nutrition, intrauterine growth retardation, prematurity, early life infections, microbiome, and allergies and their effect on lung functional trajectories. While some of the factors (e.g., prematurity) directly impair lung growth, the influence of many environmental factors is mediated through inflammatory processes (e.g., recurrent infections or oxidative stress). The timing and nature of these influences and their impact result in degrees of impaired maximal lung functional capacity in early adulthood; and they potentially impact future long-term respiratory morbidity such as chronic asthma or chronic obstructive airway disease (COPD). We discuss possibilities to prevent or modify such early abnormal lung functional growth trajectories and the need for future studies and prevention programs.
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Affiliation(s)
- Fabienne Decrue
- University Children's Hospital (UKBB), University of Basel, Spitalstrasse 33, 4056, Basel, Switzerland
| | - Olga Gorlanova
- University Children's Hospital (UKBB), University of Basel, Spitalstrasse 33, 4056, Basel, Switzerland
| | - Jakob Usemann
- University Children's Hospital (UKBB), University of Basel, Spitalstrasse 33, 4056, Basel, Switzerland.,Division of Respiratory Medicin, University Children's Hospital Zurich, Zurich, Switzerland
| | - Urs Frey
- University Children's Hospital (UKBB), University of Basel, Spitalstrasse 33, 4056, Basel, Switzerland.
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16
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Duijts L, van Meel ER, Moschino L, Baraldi E, Barnhoorn M, Bramer WM, Bolton CE, Boyd J, Buchvald F, Del Cerro MJ, Colin AA, Ersu R, Greenough A, Gremmen C, Halvorsen T, Kamphuis J, Kotecha S, Rooney-Otero K, Schulzke S, Wilson A, Rigau D, Morgan RL, Tonia T, Roehr CC, Pijnenburg MW. European Respiratory Society guideline on long-term management of children with bronchopulmonary dysplasia. Eur Respir J 2020; 55:13993003.00788-2019. [PMID: 31558663 DOI: 10.1183/13993003.00788-2019] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 08/30/2019] [Indexed: 12/22/2022]
Abstract
This document provides recommendations for monitoring and treatment of children in whom bronchopulmonary dysplasia (BPD) has been established and who have been discharged from the hospital, or who were >36 weeks of postmenstrual age. The guideline was based on predefined Population, Intervention, Comparison and Outcomes (PICO) questions relevant for clinical care, a systematic review of the literature and assessment of the evidence using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach. After considering the balance of desirable (benefits) and undesirable (burden, adverse effects) consequences of the intervention, the certainty of the evidence, and values, the task force made conditional recommendations for monitoring and treatment of BPD based on very low to low quality of evidence. We suggest monitoring with lung imaging using ionising radiation in a subgroup only, for example severe BPD or recurrent hospitalisations, and monitoring with lung function in all children. We suggest to give individual advice to parents regarding daycare attendance. With regards to treatment, we suggest the use of bronchodilators in a subgroup only, for example asthma-like symptoms, or reversibility in lung function; no treatment with inhaled or systemic corticosteroids; natural weaning of diuretics by the relative decrease in dose with increasing weight gain if diuretics are started in the neonatal period; and treatment with supplemental oxygen with a saturation target range of 90-95%. A multidisciplinary approach for children with established severe BPD after the neonatal period into adulthood is preferable. These recommendations should be considered until new and urgently needed evidence becomes available.
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Affiliation(s)
- Liesbeth Duijts
- Dept of Pediatrics, Division of Respiratory Medicine and Allergology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands .,Dept of Pediatrics, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Evelien R van Meel
- Dept of Pediatrics, Division of Respiratory Medicine and Allergology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Laura Moschino
- Dept of Women's and Children's Health, University of Padua, Padua, Italy
| | - Eugenio Baraldi
- Dept of Women's and Children's Health, University of Padua, Padua, Italy
| | | | - Wichor M Bramer
- Medical Library, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Charlotte E Bolton
- NIHR Nottingham BRC Respiratory Theme and Division of Respiratory Medicine, University of Nottingham, Nottingham, UK
| | | | - Frederik Buchvald
- Pediatric Pulmonary Service, DBLC, Rigshospitalet, Copenhagen, Denmark
| | | | - Andrew A Colin
- Division of Pediatric Pulmonology, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Refika Ersu
- Division of Respirology, Marmara University Istanbul, Istanbul, Turkey.,Division of Respirology, University of Ottowa, Children's Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - Anne Greenough
- Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | | | - Thomas Halvorsen
- Dept of Pediatrics, Haukeland University Hospital, Bergen, Norway.,Dept of Clinical Science, University of Bergen, Bergen, Norway
| | | | - Sailesh Kotecha
- Dept of Child Health, School of Medicine, Cardiff University, Cardiff, UK
| | | | - Sven Schulzke
- Dept of Neonatology, University Children's Hospital Basel UKBB, Basel, Switzerland
| | - Andrew Wilson
- Dept of Respiratory and Sleep Medicine, Princess Margaret Hospital for Children, Perth, Australia
| | - David Rigau
- Iberoamerican Cochrane Centre, Barcelona, Spain
| | - Rebecca L Morgan
- Dept of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Thomy Tonia
- Insitute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Charles C Roehr
- Dept of Paediatrics, Medical Sciences Division, University of Oxford, Oxford, UK.,Newborn Services, John Radcliffe Hospital, Oxford University Hospitals, Oxford, UK
| | - Marielle W Pijnenburg
- Dept of Pediatrics, Division of Respiratory Medicine and Allergology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
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17
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Friedlander Y, Zanette B, Lindenmaier A, Sadanand S, Li D, Stirrat E, Couch M, Kassner A, Jankov RP, Santyr G. Chemical shift of
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Xe dissolved in red blood cells: Application to a rat model of bronchopulmonary dysplasia. Magn Reson Med 2019; 84:52-60. [DOI: 10.1002/mrm.28121] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/13/2019] [Accepted: 11/19/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Yonni Friedlander
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
- Department of Medical Biophysics University of Toronto Toronto Ontario Canada
| | - Brandon Zanette
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
| | - Andras Lindenmaier
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
- Department of Medical Biophysics University of Toronto Toronto Ontario Canada
| | - Siddharth Sadanand
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
| | - Daniel Li
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
| | - Elaine Stirrat
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
| | - Marcus Couch
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
- Department of Medical Biophysics University of Toronto Toronto Ontario Canada
| | - Andrea Kassner
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
- Department of Medical Imaging University of Toronto Toronto Ontario Canada
| | - Robert P. Jankov
- Molecular Biomedicine Program Children’s Hospital of Eastern Ontario Research Institute Ottawa Ontario Canada
- Department of Cellular and Molecular Medicine University of Ottawa Ottawa Ontario Canada
| | - Giles Santyr
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
- Department of Medical Biophysics University of Toronto Toronto Ontario Canada
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18
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Usemann J, Suter A, Zannin E, Proietti E, Fouzas S, Schulzke S, Latzin P, Frey U, Korten I, Anagnostopoulou P, Gorlanova O, Frey U, Latzin P, Proietti E, Usemann J. Variability of Tidal Breathing Parameters in Preterm Infants and Associations with Respiratory Morbidity during Infancy: A Cohort Study. J Pediatr 2019; 205:61-69.e1. [PMID: 30416016 DOI: 10.1016/j.jpeds.2018.10.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/04/2018] [Accepted: 10/02/2018] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To test whether low variability of tidal volume (VT) and capnographic indices are predictive of subsequent respiratory morbidity in preterm infants. STUDY DESIGN In a birth cohort of 133 preterm infants, lung function was performed at 44 weeks postmenstrual age. Associations between the coefficient of variation (CV) of VT (CVVT) and of expired CO2 volume per breath (CVVE,CO2) with rehospitalization, wheeze, and inhalation therapy during infancy were assessed using logistic regression. Area under the curve (AUC) analysis was used to assess whether outcome prediction using bronchopulmonary dysplasia (BPD) classification was enhanced by CVVT or CVVE,CO2. RESULTS For each IQR decrease in CVVT (range, 4%-35%) and CVVE,CO2 (range, 5%-40%), the OR for rehospitalization increased by 2.25 (95% CI, 1.21-4.20) and 2.31 (95% CI, 1.20-4.45), respectively. The predictive value of BPD for rehospitalization was improved when CVVT or CVVE,CO2 was added to the model, with the AUC increasing from 0.56 to 0.66 in both models. No association was found for the other outcomes. CONCLUSIONS Compared with BPD classification alone, including near-term variability of tidal breathing parameters improves the prediction of rehospitalization in infancy. These findings may inform parent counseling and monitoring strategies in preterm infants.
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Affiliation(s)
- Jakob Usemann
- University Children's Hospital Basel, Basel, Switzerland; Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
| | - Andrea Suter
- University Children's Hospital Basel, Basel, Switzerland
| | - Emanuela Zannin
- University Children's Hospital Basel, Basel, Switzerland; Departiment of Electronics, Information, and Bioengineering, Polytechnic University of Milan, Milan, Italy
| | - Elena Proietti
- University Children's Hospital Basel, Basel, Switzerland; Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Sotirios Fouzas
- Pediatric Respiratory Unit, University Hospital of Patras, Patras, Greece
| | - Sven Schulzke
- University Children's Hospital Basel, Basel, Switzerland
| | - Philipp Latzin
- Pediatric Respiratory Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Urs Frey
- University Children's Hospital Basel, Basel, Switzerland
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19
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Our Tiny Preemies: What Will Become of Their Future Pulmonary Health? Ann Am Thorac Soc 2018; 15:1276-1278. [DOI: 10.1513/annalsats.201808-579ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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20
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Ren CL, Feng R, Davis SD, Eichenwald E, Jobe A, Moore PE, Panitch HB, Sharp JK, Kisling J, Clem C. Tidal Breathing Measurements at Discharge and Clinical Outcomes in Extremely Low Gestational Age Neonates. Ann Am Thorac Soc 2018; 15:1311-1319. [PMID: 30088802 PMCID: PMC6322016 DOI: 10.1513/annalsats.201802-112oc] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 08/07/2018] [Indexed: 11/20/2022] Open
Abstract
RATIONALE The relationship between respiratory function at hospital discharge and the severity of later respiratory disease in extremely low gestational age neonates is not well defined. OBJECTIVES To test the hypothesis that tidal breathing measurements near the time of hospital discharge differ between extremely premature infants with bronchopulmonary dysplasia (BPD) or respiratory disease in the first year of life and those without these conditions. METHODS Study subjects were part of the PROP (Prematurity and Respiratory Outcomes Program) study, a longitudinal cohort study of infants born at less than 29 gestational weeks followed from birth to 1 year of age. Respiratory inductance plethysmography was used for tidal breathing measurements before and after inhaled albuterol 1 week before anticipated hospital discharge. Infants were breathing spontaneously and were receiving less than or equal to 1 L/min nasal cannula flow at 21% to 100% fraction of inspired oxygen. A survey of respiratory morbidity was administered to caregivers at 3, 6, 9, and 12 months corrected age to assess for respiratory disease. We compared tidal breathing measurements in infants with and without BPD (oxygen requirement at 36 wk) and with and without respiratory disease in the first year of life. Measurements were also performed in a comparison cohort of term infants. RESULTS A total of 765 infants survived to 36 weeks postmenstrual age, with research-quality tidal breathing data in 452 out of 564 tested (80.1%). Among these 452 infants, the rate of postdischarge respiratory disease was 65.7%. Compared with a group of 18 term infants, PROP infants had abnormal tidal breathing patterns. However, there were no clinically significant differences in tidal breathing measurements in PROP infants who had BPD or who had respiratory disease in the first year of life compared with those without these diagnoses. Bronchodilator response was not significantly associated with respiratory disease in the first year of life. CONCLUSIONS Extremely premature infants receiving less than 1 L/min nasal cannula support at 21% to 100% fraction of inspired oxygen have tidal breathing measurements that differ from term infants, but these measurements do not differentiate those preterm infants who have BPD or will have respiratory disease in the first year of life from those who do not. Clinical trial registered with www.clinicaltrials.gov (NCT01435187).
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Affiliation(s)
- Clement L. Ren
- Riley Hospital for Children and Indiana University, Indianapolis, Indiana
| | - Rui Feng
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Stephanie D. Davis
- Riley Hospital for Children and Indiana University, Indianapolis, Indiana
| | - Eric Eichenwald
- Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Alan Jobe
- Children’s Hospital Medical Center, Cincinnati, Ohio
| | - Paul E. Moore
- Vanderbilt University School of Medicine, Nashville, Tennessee
| | | | | | - Jeff Kisling
- Riley Hospital for Children and Indiana University, Indianapolis, Indiana
| | - Charles Clem
- Riley Hospital for Children and Indiana University, Indianapolis, Indiana
| | - on behalf of the Prematurity and Respiratory Outcomes Program*
- Riley Hospital for Children and Indiana University, Indianapolis, Indiana
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
- Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
- Children’s Hospital Medical Center, Cincinnati, Ohio
- Vanderbilt University School of Medicine, Nashville, Tennessee
- Texas Children’s Hospital, Houston, Texas; and
- Washington University, St. Louis, Missouri
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21
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Mulder EEM, Rijken M, de Smet L, Pauws S, Lopriore E, Te Pas AB. Respiratory morbidity was an important consequence of prematurity in the first two years after discharge in three cohorts from 1996 to 2009. Acta Paediatr 2018; 107:68-72. [PMID: 28940731 DOI: 10.1111/apa.14085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 09/18/2017] [Indexed: 11/29/2022]
Abstract
AIM This study aimed to evaluate the respiratory morbidity of preterm infants in the first two years after discharge in three cohorts from 1996 to 2009. METHODS We included infants with a gestational age from 25 + 0 to 29 + 6 weeks, who were born in 1996-1997, 2003-2004 and 2008-2009 at the Leiden University Medical Center in the Netherlands. The following parameters were recorded: bronchopulmonary dysplasia (BPD), defined as oxygen demand or positive pressure at 36 weeks, mortality, duration of supplemental oxygen, discharge with supplemental oxygen and a nasogastric feeding tube, rehospitalisation and the use of inhaled medication. RESULTS In line with our protocols, 106, 120 and 156 infants were analysed in the three study periods and 29%, 22% and 18% were diagnosed with BPD. Respiratory morbidity did not change over time in infants with and without BPD, except for an increase in rehospitalisation for respiratory issues in infants with BPD. This decreased in infants without BPD. Respiratory morbidity occurred more frequently in infants with BPD than without BPD, but this was not statistically significant. CONCLUSION This study showed that when cohorts of preterm infants were compared over time, respiratory morbidity in the first two years of life remained an important consequence after discharge.
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Affiliation(s)
- Estelle E M Mulder
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands.,Department of Neonatology, Isala Hospital, Zwolle, The Netherlands
| | - Monique Rijken
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Lotte de Smet
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Enrico Lopriore
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - Arjan B Te Pas
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
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22
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Bentsen MH, Markestad T, Øymar K, Halvorsen T. Lung function at term in extremely preterm-born infants: a regional prospective cohort study. BMJ Open 2017; 7:e016868. [PMID: 29074512 PMCID: PMC5665228 DOI: 10.1136/bmjopen-2017-016868] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVES To compare lung function of extremely preterm (EP)-born infants with and without bronchopulmonary dysplasia (BPD) with that of healthy term-born infants, and to determine which perinatal characteristics were associated with lung function at term and how predictive these measurements were for later respiratory health in EP-born infants. METHODS Perinatal variables were recorded prospectively, and tidal breathing parameters were measured at term-equivalent age using electromagnetic inductance plethysmography. Respiratory morbidity was defined by hospital readmissions and/or treatment with asthma medications during the first year of life. RESULTS Fifty-two EP-born infants (mean gestational age 261, range 226-276 weeks) and 45 term-born infants were included. There was evidence of significant airway obstruction, higher tidal volumes and increased minute ventilation in the EP-born infants with and without BPD, although generally more pronounced for those with BPD. Male gender, antenatal steroids and number of days on continuous positive airway pressure were associated with lung function outcomes at term. A prediction model incorporating two unrelated tidal breathing parameters, BPD, birth weight z-score and gender, predicted respiratory morbidity in the first year of life with good accuracy (area under the curve 0.818, sensitivity and specificity 81.8% and 75.0%, respectively). CONCLUSION Lung function measured at term-equivalent age was strikingly abnormal in EP-born infants, irrespective of BPD. Tidal breathing parameters may be of value in predicting future pulmonary health in infants born premature. TRIAL REGISTRATION NUMBER NCT01150396; Results.
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Affiliation(s)
- Mariann Haavik Bentsen
- Department of Pediatrics, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Trond Markestad
- Department of Pediatrics, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Knut Øymar
- Department of Clinical Science, Faculty of Medicine, University of Bergen, Bergen, Norway
- Department of Pediatrics, Stavanger University Hospital, Stavanger, Norway
| | - Thomas Halvorsen
- Department of Pediatrics, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, Faculty of Medicine, University of Bergen, Bergen, Norway
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23
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Egger B, Jost K, Anagnostopoulou P, Yammine S, Singer F, Casaulta C, Frey U, Latzin P. Lung clearance index and moment ratios at different cut-off values in infant multiple-breath washout measurements. Pediatr Pulmonol 2016; 51:1373-1381. [PMID: 27214661 DOI: 10.1002/ppul.23483] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 05/02/2016] [Accepted: 05/06/2016] [Indexed: 11/09/2022]
Abstract
BACKGROUND Multiple-breath washout (MBW) is increasingly used for infant lung function testing. Current guidelines recommend calculating lung clearance index (LCI) and functional residual capacity (FRC) at 2.5% of normalized tracer gas concentration, without clear recommendation for moment ratios (MR). Whether the 2.5% cut-off has the highest discriminative power to detect ventilation inhomogeneity in infants with lung diseases is unknown. METHODS We used sulfur-hexafluoride MBW measurements from 32 infants with cystic fibrosis, 32 preterm infants, and 32 healthy controls at postmenstrual age of 41-54 weeks. We compared the discriminative power to detect pathological values above the upper limit of normal for 12 different cut-offs between 20% and 1.5% for first and second MR (MR1, MR2), LCI, and FRC. RESULTS MR and LCI results changed significantly at different cut-offs. Mean MR2 in infants with cystic fibrosis increased from 2.4 to 7.2 units between 20% and 1.5% SF6 . The ability of MR and LCI to discriminate between health and disease increased significantly with lower cut-offs. The 1.5% cut-off showed highest discriminative power: in infants with cystic fibrosis pathological MR2 values were found in 27 out of 89 (30%) and for LCI in 28/89 (32%). In preterm infants, pathological MR2 values were detected in 39 out of 73 (53%), and for LCI in 35/73 (48%). FRC remained stable throughout the washout. CONCLUSION In infants, the diagnostic performance of MBW strongly depends on the point of analysis. The cut-off with the highest discriminative power to detect ventilation inhomogeneity in infants with cystic fibrosis and after preterm birth was at 1.5% tracer gas concentration. Pediatr Pulmonol. 2016;51:1373-1381. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Barbara Egger
- Department of Pediatrics, University of Basel Children's Hospital (UKBB), Spitalstrasse 33, Basel 4031, Switzerland
| | - Kerstin Jost
- Department of Pediatrics, University of Basel Children's Hospital (UKBB), Spitalstrasse 33, Basel 4031, Switzerland
| | - Pinelopi Anagnostopoulou
- Division of Respiratory Medicine, Department of Pediatrics, University Children's Hospital Bern, University of Bern, Switzerland
| | - Sophie Yammine
- Division of Respiratory Medicine, Department of Pediatrics, University Children's Hospital Bern, University of Bern, Switzerland
| | - Florian Singer
- Department of Pediatrics, University Children's Hospital Zurich, Zurich, Switzerland
| | - Carmen Casaulta
- Division of Respiratory Medicine, Department of Pediatrics, University Children's Hospital Bern, University of Bern, Switzerland
| | - Urs Frey
- Department of Pediatrics, University of Basel Children's Hospital (UKBB), Spitalstrasse 33, Basel 4031, Switzerland
| | - Philipp Latzin
- Department of Pediatrics, University of Basel Children's Hospital (UKBB), Spitalstrasse 33, Basel 4031, Switzerland.,Division of Respiratory Medicine, Department of Pediatrics, University Children's Hospital Bern, University of Bern, Switzerland
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Rhinovirus Infections and Associated Respiratory Morbidity in Infants: A Prospective Cohort Study. Pediatr Infect Dis J 2016; 35:1069-74. [PMID: 27254029 DOI: 10.1097/inf.0000000000001240] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Risk factors promoting rhinovirus (RV) infections are inadequately described in healthy populations, especially infants. OBJECTIVES To determine the frequency of symptomatic and asymptomatic RV infections and identify possible risk factors from host and environment among otherwise healthy infants. METHODS In a prospective birth cohort, respiratory health was assessed in 41 term-born infants by weekly telephonic interviews during the first year of life, and weekly nasal swabs were collected to determine RV prevalence. In a multilevel logistic regression model, associations between prevalence and respiratory symptoms during RV infections and host/environmental factors were determined. RESULTS Twenty-seven percent of nasal swabs in 41 infants tested positive for RVs. Risk factors for RV prevalence were autumn months [odds ratio (OR) = 1.71, P = 0.01, 95% confidence interval (CI): 1.13-2.61], outdoor temperatures between 5 and 10°C (OR = 2.33, P = 0.001, 95% CI: 1.41-3.86), older siblings (OR = 2.60, P = 0.001, 95% CI: 1.50-4.51) and childcare attendance (OR = 1.53, P = 0.07, 95% CI: 0.96-2.44). Fifty-one percent of RV-positive samples were asymptomatic. Respiratory symptoms during RV infections were less likely during the first 3 months of life (OR = 0.34, P = 0.003, 95% CI: 0.17-0.69) and in infants with atopic mothers (OR = 0.44, P = 0.008, 95% CI: 0.24-0.80). Increased tidal volume (OR = 1.67, P = 0.03, 95% CI: 1.04-2.68) and outdoor temperatures between 2 and 5°C (OR = 2.79, P = 0.02, 95% CI: 1.17-6.61) were associated with more symptoms. CONCLUSIONS RVs are highly prevalent during the first year of life, and most infections are asymptomatic. Frequency of RV infections is associated with environmental factors, while respiratory symptoms during RV infections are linked to host determinants like infant age, maternal atopy or premorbid lung function.
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Jost K, Lenherr N, Singer F, Schulzke S, Frey U, Latzin P, Yammine S. Changes in breathing pattern upon 100% oxygen in children at early school age. Respir Physiol Neurobiol 2016; 228:9-15. [DOI: 10.1016/j.resp.2016.03.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 03/04/2016] [Accepted: 03/06/2016] [Indexed: 10/22/2022]
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Banton GL, Hall GL, Tan M, Skoric B, Ranganathan SC, Franklin PJ, Pillow JJ, Schulzke SM, Simpson SJ. Multiple breath washout cannot be used for tidal breath parameter analysis in infants. Pediatr Pulmonol 2016; 51:531-40. [PMID: 26436446 DOI: 10.1002/ppul.23326] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 08/27/2015] [Accepted: 09/07/2015] [Indexed: 11/07/2022]
Abstract
BACKGROUND Multiple breath washout (MBW) testing with SF6 gas mixture is routinely used to assess ventilation distribution in infants. It is currently unknown whether SF6 changes tidal breathing parameters during MBW in infants. We investigated if SF6 does change tidal breathing parameters in infants and whether a separate tidal breathing trace prior to MBW testing is necessary. METHODS Tidal breathing during MBW was compared to standard tidal breathing in room air in healthy infants (n = 38), preterm infants (n = 41), and infants with cystic fibrosis (n = 41). Outcomes included inspiratory and expiratory times (TI and TE ), time to peak tidal inspiratory and expiratory flow (tPTIF and tPTEF), tidal volume (VT ), respiratory rate (f), and minute ventilation (VE ). RESULTS Breath times were all significantly increased for both healthy (TE : -0.0790 [-0.10566, -0.05217]; mean difference [95% confidence intervals]) and CF (-0.109 [-0.15235, -0.06607]) infants during the MBW wash-in (P < 0.001). Healthy infants and those with CF showed decreased f during MBW wash-in (P < 0.001); however, no change in VT, resulting in a decreased VE (0.154 (0.086, 0.222) and 0.128 (0.069, 0.186) for healthy and CF infants, respectively, P < 0.001). Preterm infants experienced a decreased VE during both wash-in (0.134 [0.061, 0.207]; P < 0.001) and wash-out phases of MBW (P < 0.05). CONCLUSION There are differences in tidal breathing parameters during MBW testing with SF6 in infants. It is, therefore, important to measure a separate tidal breathing trace in room air, prior to MBW testing to ensure rigour of tidal breath indices derived from analysis.
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Affiliation(s)
- Georgia L Banton
- Telethon Kids Institute, University of Western Australia, Subiaco, Australia
| | - Graham L Hall
- Telethon Kids Institute, University of Western Australia, Subiaco, Australia
| | - Mark Tan
- Telethon Kids Institute, University of Western Australia, Subiaco, Australia
| | - Billy Skoric
- Respiratory Medicine, Royal Children's Hospital, Melbourne, VIC, Australia
| | | | - Peter J Franklin
- School of Population Health, University of Western Australia, Perth, Australia
| | | | - Sven M Schulzke
- Department of Neonatology, University Children's Hospital Basel, Basel, Switzerland
| | - Shannon J Simpson
- Telethon Kids Institute, University of Western Australia, Subiaco, Australia
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Bentsen MHL, Haaland ØA, Lønning LB, Gudmundsdottir HK, Markestad T, Halvorsen T. A new non-invasive method of infant spirometry demonstrates a level of repeatability that is comparable to traditional methods. Acta Paediatr 2015; 104:1130-7. [PMID: 26287280 DOI: 10.1111/apa.13155] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 04/09/2015] [Accepted: 08/13/2015] [Indexed: 01/19/2023]
Abstract
AIM The FloRight system provides novel non-invasive infant spirometry based on electromagnetic inductance plethysmography. We investigated the consistency of repeated measurements carried out in a Norwegian neonatal intensive care unit (NICU) using the system and how well these were tolerated. METHODS Tidal flow-volume loops were obtained from 10 preterm infants at discharge, 10 stable growing preterm infants weighing about 1500 g and 10 term-born infants. A nurse experienced with the system measured all patients before and after meals, and these measurements were repeated by nurses new to the system. RESULTS The measurements were well tolerated by the infants. The repeatability for the two parameters 'tidal volume' (Vt) and 'time to peak tidal expiratory flow to total expiratory time' (Tptef/Te) were relatively poor, similar to previous methods. However, the repeatability was good for the new 'flow-volume gravity mid-point' (FVg) parameter. Repeatability was better for term than preterm infants, when measurements were obtained by the experienced nurse and for measurements carried out before meals. CONCLUSION The FloRight system proved feasible in a NICU setting. The repeatability of the lung function measurements was similar to those reported for traditional infant spirometry. The nurse's experience and the relationship to meals appeared to be important.
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Affiliation(s)
- Mariann H. L. Bentsen
- Department of Pediatrics; Haukeland University Hospital; Bergen Norway
- Department of Clinical Science, Faculty of Medicine and Odontology; University of Bergen; Bergen Norway
| | - Øystein A. Haaland
- Department of Pediatrics; Haukeland University Hospital; Bergen Norway
- Department of Global Public Health and Primary Care; University of Bergen; Bergen Norway
| | - Lise B. Lønning
- Department of Pediatrics; Haukeland University Hospital; Bergen Norway
| | | | - Trond Markestad
- Department of Pediatrics; Haukeland University Hospital; Bergen Norway
- Department of Clinical Science, Faculty of Medicine and Odontology; University of Bergen; Bergen Norway
| | - Thomas Halvorsen
- Department of Pediatrics; Haukeland University Hospital; Bergen Norway
- Department of Clinical Science, Faculty of Medicine and Odontology; University of Bergen; Bergen Norway
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Yammine S, Schmidt A, Sutter O, Fouzas S, Singer F, Frey U, Latzin P. Functional evidence for continued alveolarisation in former preterms at school age? Eur Respir J 2015; 47:147-55. [PMID: 26493788 DOI: 10.1183/13993003.00478-2015] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 08/18/2015] [Indexed: 11/05/2022]
Abstract
Prematurity is the most common disruptor of lung development. The aim of our study was to examine the function of the more vulnerable peripheral airways in former preterm children by multiple-breath washout (MBW) measurements.86 school-aged children, born between 24 and 35 weeks of gestation and 49 term-born children performed nitrogen MBW. Lung clearance index (LCI), and slope III-derived Scond and Sacin were assessed as markers for global, convection-dependent and diffusion-convection-dependent ventilation inhomogeneity, respectively.We analysed the data of 77 former preterm (mean (range) age 9.5 (7.2-12.8) years) and 46 term-born children (mean age 9.9 (6.0-15.9) years). LCI and Sacin did not differ between preterm and term-born children. Scond was significantly elevated in preterm compared to term-born participants (mean difference z-score 1.74, 95% CI 1.17-2.30; p<0.001), with 54% of former preterm children showing elevated Scond. In multivariable regression analysis Scond was significantly related only to gestational age (R(2)=0.37).Normal Sacin provides evidence for a functionally normal alveolar compartment, while elevated Scond indicates impaired function of more proximal conducting airways. Together, our findings support the concept of continued alveolarisation, albeit with "dysanaptic" lung growth in former preterm children.
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Affiliation(s)
- Sophie Yammine
- University Children's Hospital of Basel (UKBB), Basel, Switzerland Division of Respiratory Medicine, Department of Paediatrics, University Children's Hospital Bern, Bern, Switzerland
| | - Anne Schmidt
- University Children's Hospital of Basel (UKBB), Basel, Switzerland Division of Respiratory Medicine, Department of Paediatrics, University Children's Hospital Bern, Bern, Switzerland
| | - Oliver Sutter
- Division of Respiratory Medicine, Department of Paediatrics, University Children's Hospital Bern, Bern, Switzerland
| | - Sotirios Fouzas
- Paediatric Respiratory Unit, University Hospital of Patras, Patras, Greece
| | - Florian Singer
- Division of Respiratory Medicine, Department of Paediatrics, University Children's Hospital Bern, Bern, Switzerland University Children's Hospital Zurich, Zurich, Switzerland
| | - Urs Frey
- University Children's Hospital of Basel (UKBB), Basel, Switzerland
| | - Philipp Latzin
- University Children's Hospital of Basel (UKBB), Basel, Switzerland Division of Respiratory Medicine, Department of Paediatrics, University Children's Hospital Bern, Bern, Switzerland
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de Mello RR, da Silva KS, Costa AM, Ramos JRDM. Longitudinal assessment of the lung mechanics of very low birth weight preterm infants with and without bronchopulmonary dysplasia. SAO PAULO MED J 2015; 133:401-7. [PMID: 26648428 PMCID: PMC10871802 DOI: 10.1590/1516-3180.2014.00101812] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 12/17/2014] [Accepted: 12/18/2014] [Indexed: 11/21/2022] Open
Abstract
CONTEXT AND OBJECTIVE Prematurity has been correlated with altered lung mechanics. Some infants develop lung injury as a consequence of lung immaturity, invasive mechanical ventilation and exposure to oxygen, thus resulting in bronchopulmonary dysplasia. The aim here was to compare the lung mechanics of preterm infants with and without bronchopulmonary dysplasia during the first year of life. DESIGN AND SETTING Prospective cohort study in a tertiary-level hospital. METHODS This study included premature infants at a public hospital who underwent two pulmonary function tests: one at discharge and the other at the corrected age of 4 to 8 months. Tidal volume, lung compliance and lung resistance were measured. Statistical tests were used for comparisons between infants with and without bronchopulmonary dysplasia. RESULTS 102 children with mean gestational age of 29 ± 2.0 weeks were studied; 17 with bronchopulmonary dysplasia. Lung compliance (0.84 ± 0.29 versus 1.28 ± 0.46; P < 0.001) and tidal volume (6.1 ± 0.94 versus 7.2 ± 1.43; P < 0.01) at discharge were significant lower in children with bronchopulmonary dysplasia than in those without the disease, but no differences were observed at the second test (compliance: 1.53 ± 0.77 versus 1.94 ± 1.01; P = 0.12; and tidal volume: 6.9 ± 1.4 versus 7.3 ± 1.6; P = 0.42). CONCLUSION Differences in lung mechanics were observed between infants with and without bronchopulmonary dysplasia at hospital discharge but these differences were no longer detected at the final follow-up. The lung mechanics of all the infants improved over this period of time.
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Affiliation(s)
- Rosane Reis de Mello
- MD, PhD. Attending Physician, Department of Neonatology, Instituto Nacional de Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira/Fiocruz, Rio de Janeiro (RJ), Brazil.
| | - Kátia Silveira da Silva
- MD, PhD. Epidemiologist, Clinical Research Unit, Instituto Nacional de Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira/Fiocruz, Rio de Janeiro (RJ), Brazil.
| | - Anniele Medeiros Costa
- MSc. Physiotherapist, Department of Neonatology, Instituto Nacional de Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira/Fiocruz, Rio de Janeiro (RJ), Brazil.
| | - José Roberto de Moraes Ramos
- MD, PhD. Head of Department of Neonatology, Instituto Nacional de Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira/Fiocruz, Rio de Janeiro (RJ), Brazil.
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