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Rose LA, Frymoyer A, Bhombal S, Chock VY. Renal Oxygen Saturations and Acute Kidney Injury in the Preterm Infant with Patent Ductus Arteriosus. Am J Perinatol 2024; 41:e2606-e2612. [PMID: 37459881 DOI: 10.1055/a-2130-2269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
OBJECTIVE Decreased near-infrared spectroscopy (NIRS) measures of renal oxygen saturation (Rsat) have identified preterm infants with a hemodynamically significant patent ductus arteriosus (hsPDA). NIRS may further identify infants at risk for acute kidney injury (AKI) in a population with concern for hsPDA. STUDY DESIGN Review of infants ≤29 weeks' gestation undergoing NIRS and echocardiography due to concern for hsPDA. The hsPDA was defined by two of the following: moderate-large size, left to right shunt, aortic flow reversal, left atrial enlargement. AKI was defined by neonatal modified Kidney Disease Improving Global Outcomes (KDIGO). Rsat and cerebral saturation (Csat), averaged over 1 hour, were evaluated for the 24-hour period around echocardiography. RESULTS Among 77 infants, 29 (38%) had AKI by neonatal modified KDIGO criteria. hsPDA was found on echocardiography in 59 (77%). There were no differences in hsPDA in infants with and without AKI (p = 0.1). Rsat was not associated with AKI (p = 0.3). Infants on dopamine had less Rsat variability (p < 0.01). CONCLUSION Rsat prior to echocardiography did not discriminate AKI in this cohort of preterm infants at risk for hsPDA; however, data may not capture optimal timing of Rsat measurement before AKI. KEY POINTS · No Rsat value was found to be associated with the development of AKI.. · The optimal timing of Rsat measurement should be evaluated in infants at risk for hsPDA.. · NIRS bedside monitoring of Csat and Rsat measures may be useful in trending perfusion patterns.. · Identification of those at high risk for AKI may allow for more careful kidney function monitoring..
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Affiliation(s)
- Laura A Rose
- Division of Neonatology, University of California San Diego School of Medicine, La Jolla, California
| | - Adam Frymoyer
- Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Stanford, California
| | - Shazia Bhombal
- Division of Neonatology, Emory University and Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Valerie Y Chock
- Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Stanford, California
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Sikdar O, Harris C, Greenough A. Improving early diagnosis of bronchopulmonary dysplasia. Expert Rev Respir Med 2024; 18:283-294. [PMID: 38875260 DOI: 10.1080/17476348.2024.2367584] [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: 02/07/2024] [Accepted: 06/10/2024] [Indexed: 06/16/2024]
Abstract
INTRODUCTION Bronchopulmonary disease (BPD) is associated with long-term neurodevelopmental and cardiorespiratory complications, often requiring significant use of resources. To reduce this healthcare burden, it is essential that those at high risk of BPD are identified early so that strategies are introduced to prevent disease progression. Our aim was to discuss potential methods for improving early diagnosis in the first week after birth. AREAS COVERED A narrative review was undertaken. The search strategy involved searching PubMed, Embase and Cochrane databases from 1967 to 2024. The results of potential biomarkers and imaging modes are discussed. Furthermore, the value of scoring systems is explored. EXPERT OPINION BPD occurs as a result of disruption to pulmonary vascular and alveolar development, thus abnormal levels of factors regulating those processes are promising avenues to explore with regard to early detection of high-risk infants. Data from twin studies suggests genetic factors can be attributed to 82% of the observed difference in moderate to severe BPD, but large genome-wide studies have yielded conflicting results. Comparative studies are required to determine which biomarker or imaging mode may most accurately diagnose early BPD development. Models which include the most predictive factors should be evaluated going forward.
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Affiliation(s)
- Oishi Sikdar
- Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Christopher Harris
- Neonatal Intensive Care Centre, King's College Hospital NHS Foundation Trust, Denmark Hill, London, UK
| | - Anne Greenough
- 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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Borges-Lujan M, Gonzalez-Luis GE, Roosen T, Huizing MJ, Villamor E. Sex Differences in Patent Ductus Arteriosus Incidence and Response to Pharmacological Treatment in Preterm Infants: A Systematic Review, Meta-Analysis and Meta-Regression. J Pers Med 2022; 12:jpm12071143. [PMID: 35887640 PMCID: PMC9321725 DOI: 10.3390/jpm12071143] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/05/2022] [Accepted: 07/08/2022] [Indexed: 11/16/2022] Open
Abstract
A widely accepted concept in perinatal medicine is that boys are more susceptible than girls to complications of prematurity. However, whether this ‘male disadvantage of prematurity’ also involves persistent patent ductus arteriosus (PDA) has been scarcely investigated. Our aim was to conduct a systematic review and meta-analysis on studies addressing sex differences in the risk of developing PDA among preterm infants. We also investigated whether the response to pharmacological treatment of PDA differs between boys and girls. PubMed/Medline and Embase databases were searched. The random-effects male/female risk ratio (RR) and 95% confidence interval (CI) were calculated. We included 146 studies (357,781 infants). Meta-analysis could not demonstrate sex differences in risk of developing any PDA (37 studies, RR 1.03, 95% CI 0.97 to 1.08), hemodynamically significant PDA (81 studies, RR 1.00, 95% CI 0.97 to 1.02), or in the rate of response to pharmacological treatment (45 studies, RR 1.01, 95% CI 0.98 to 1.04). Subgroup analysis and meta-regression showed that the absence of sex differences was maintained over the years and in different geographic settings. In conclusion, both the incidence of PDA in preterm infants and the response rate to pharmacological treatment of PDA are not different between preterm boys and girls.
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Affiliation(s)
- Moreyba Borges-Lujan
- Department of Neonatology, Complejo Hospitalario Universitario Insular Materno-Infantil (CHUIMI) de Canarias, 35016 Las Palmas de Gran Canaria, Spain; (M.B.-L.); (G.E.G.-L.)
| | - Gema E. Gonzalez-Luis
- Department of Neonatology, Complejo Hospitalario Universitario Insular Materno-Infantil (CHUIMI) de Canarias, 35016 Las Palmas de Gran Canaria, Spain; (M.B.-L.); (G.E.G.-L.)
| | - Tom Roosen
- Department of Pediatrics, Maastricht University Medical Centre (MUMC+), School for Oncology Reproduction (GROW), 6202 Maastricht, The Netherlands; (T.R.); (M.J.H.)
| | - Maurice J. Huizing
- Department of Pediatrics, Maastricht University Medical Centre (MUMC+), School for Oncology Reproduction (GROW), 6202 Maastricht, The Netherlands; (T.R.); (M.J.H.)
| | - Eduardo Villamor
- Department of Pediatrics, Maastricht University Medical Centre (MUMC+), School for Oncology Reproduction (GROW), 6202 Maastricht, The Netherlands; (T.R.); (M.J.H.)
- Correspondence:
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de Carvalho Nunes G, Wutthigate P, Simoneau J, Beltempo M, Sant'Anna GM, Altit G. Natural evolution of the patent ductus arteriosus in the extremely premature newborn and respiratory outcomes. J Perinatol 2022; 42:642-648. [PMID: 34815521 DOI: 10.1038/s41372-021-01277-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 09/21/2021] [Accepted: 11/10/2021] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Evaluate spontaneous closure of the patent ductus arteriosus (PDA) in extremely preterm infants and their respiratory outcomes, especially at <26 weeks gestational age (GA). STUDY DESIGN Retrospective study in <29 weeks, admitted within 24 h after birth (Feb 2015 and Dec 2019). Infants without any intervention to promote ductal closure, ≥1 echocardiography, and alive at discharge were included. RESULTS Two hundred and fourteen infants (average GA 26.3 ± 1.5 weeks) were included; 84 (39%) <26 weeks. PDA closed spontaneously in 194 (91%); 76/84 (90%) for infants <26 weeks. PDA closure was ascertained on an echocardiography performed at a median age of 36.4 [34.4-40.1] weeks. Rate of moderate-to-severe bronchopulmonary dysplasia decreased throughout the study period (OR for year of birth: 0.70 [95% CI: 0.57-0.87], p = 0.001). CONCLUSION Majority of extremely preterm infants, including <26 weeks, had spontaneous closure of the ductus before term corrected age. There was a concomitant improvement of respiratory outcomes.
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Affiliation(s)
- Gabriela de Carvalho Nunes
- Neonatology-McGill University Health Centre-Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, QC, Canada
| | - Punnanee Wutthigate
- Neonatology-McGill University Health Centre-Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, QC, Canada
| | - Jessica Simoneau
- Neonatology-McGill University Health Centre-Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, QC, Canada
| | - Marc Beltempo
- Neonatology-McGill University Health Centre-Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, QC, Canada
| | - Guilherme Mendes Sant'Anna
- Neonatology-McGill University Health Centre-Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, QC, Canada
| | - Gabriel Altit
- Neonatology-McGill University Health Centre-Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, QC, Canada.
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Altit G, Saeed S, Beltempo M, Claveau M, Lapointe A, Basso O. Outcomes of Extremely Premature Infants Comparing Patent Ductus Arteriosus Management Approaches. J Pediatr 2021; 235:49-57.e2. [PMID: 33864797 DOI: 10.1016/j.jpeds.2021.04.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 03/14/2021] [Accepted: 04/08/2021] [Indexed: 12/28/2022]
Abstract
OBJECTIVE To evaluate the change in the proportion of deaths/bronchopulmonary dysplasia (BPD) among premature infants (born <26 and 26-29 weeks of gestational age) following a policy change to a strict nonintervention approach, compared with standard treatment. STUDY DESIGN We examined 1249 infants (341 born <26 weeks of gestational age) at 2 comparable sites. Site 1 (control) continued medical treatment/ligation, and site 2 (exposed) changed to a nonintervention policy in late 2013. Using the difference-in-differences approach, which accounts for time-invariant differences between sites and secular trends, we assessed changes in death or BPD separately among infants born 26-29 weeks and <26 weeks of gestational age in 2 epochs (epoch 1: 2011-2013; epoch 2: 2014-2017). RESULTS Baseline characteristics were similar across sites and epochs. Medical treatment/ligation use remained stable at site 1 but declined progressively to 0% at site 2, indicating adherence to policy. We saw no difference in death/BPD among infants born at 26-29 weeks of gestational age (12%, 95% CI -1% to 24%). However, incidence of death/BPD increased by 31% among infants born <26 weeks of gestational age (95% CI 10%-51%) in site 2, whereas there was no change in outcomes in site 1. The Score for Neonatal Acute Physiology-Version II, used as a control outcome, did not change in either site, suggesting that our findings were not due to changes in patients' severity. CONCLUSIONS Adherence to a strict conservative policy did not impact death or BPD among 26 weeks but was associated with a significant rise in infants born <26 weeks.
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Affiliation(s)
- Gabriel Altit
- Division of Neonatology, McGill University Health Center, Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, Quebec, Canada; Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada.
| | - Sahar Saeed
- Department of Epidemiology, Washington University, St. Louis, MO
| | - Marc Beltempo
- Division of Neonatology, McGill University Health Center, Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Martine Claveau
- Division of Neonatology, McGill University Health Center, Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, Quebec, Canada; Ingram School of Nursing, McGill University, Montreal, Quebec, Canada
| | - Anie Lapointe
- Department of Neonatology, CHU Sainte-Justine, Université de Montréal, Montreal, Quebec, Canada
| | - Olga Basso
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada; Department of Obstetrics and Gynecology, McGill University Health Center; Montreal, Quebec, Canada
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Hallman M, Treluyer JM, Aikio O, Rozé J. Early closure mechanisms of the ductus arteriosus in immature infants. Acta Paediatr 2021; 110:1995-2007. [PMID: 33655615 DOI: 10.1111/apa.15826] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/22/2021] [Accepted: 02/26/2021] [Indexed: 12/18/2022]
Abstract
AIM According to experimental studies, cardiopulmonary distress decreases after closure of patent ductus arteriosus. However, early closure of the ductus using ibuprofen or indomethacin has failed to increase survival without serious morbidity. We review relevant data aiming to define optimal early management strategies that promote early closure of ductus arteriosus without serious adverse effects. METHODS Literature in English was searched selectively focusing on the potential of using acetaminophen for early closure of the ductus. RESULTS Prophylactic ibuprofen or indomethacin intended to close the ductus, predisposes infants to ischaemia, bleeding and immune dysfunction. Acetaminophen appears to have a similar efficacy as indomethacin or ibuprofen, and all three dose-dependently constrict the ductus. Ibuprofen and indomethacin cause non-specific inhibition of prostaglandin synthesis, while acetaminophen predominantly inhibits prostaglandin E synthesis. Owing to low CYP450 activity in infancy, acetaminophen toxicity has been rarely evident. However, increasing the dosage increases the oxidative stress. We review prophylactic treatments that may increase the safety and efficacy of acetaminophen. These include vitamin A, cysteine and glutamine, and low-dose corticosteroid supplementation. CONCLUSION The current challenge is to define a safe perinatal management practice that promotes cardiorespiratory adaptation in immature infants, particularly the seamless closure of the ductus before significant cardiopulmonary distress develops.
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Affiliation(s)
- Mikko Hallman
- Department of Pediatrics Oulu University Hospital Oulu Finland
- PEDEGO Research Unit Medical Research Center University of Oulu Oulu Finland
| | - Jean Marc Treluyer
- Faculté de Médecine Université de Paris Paris France
- CIC‐1419 InsermCochin‐Necker Paris France
| | - Outi Aikio
- Department of Pediatrics Oulu University Hospital Oulu Finland
- PEDEGO Research Unit Medical Research Center University of Oulu Oulu Finland
| | - Jean‐Christophe Rozé
- Department of Neonatology Nantes University Hospital Nantes France
- Centre d'Investigation ClinIque CIC1413INSERMNantes University Hospital Nantes France
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Parkerson S, Philip R, Talati A, Sathanandam S. Management of Patent Ductus Arteriosus in Premature Infants in 2020. Front Pediatr 2021; 8:590578. [PMID: 33643964 PMCID: PMC7904697 DOI: 10.3389/fped.2020.590578] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 10/22/2020] [Indexed: 12/14/2022] Open
Abstract
The patent ductus arteriosus (PDA) is the most commonly found cardiac condition in neonates. While there have been several studies and thousands of publications on the topic, the decision to treat the PDA is still strongly debated among cardiologists, surgeons, and neonatologists. This is in part due to the shortage of long-term benefits with the interventions studied. Practice variations still exist within sub-specialties and centers. This article briefly summarizes the history, embryology and histology of the PDA. It also succinctly discusses the hemodynamic significance of a PDA which builds the framework to review all the available literature on PDA closure in premature infants, though not a paradigm shift just yet; it introduces transcatheter PDA closure (TCPC) as a possible armament to the clinician for this age-old problem.
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Affiliation(s)
- Sarah Parkerson
- Department of Pediatrics, University of Tennessee, Memphis, TN, United States
| | - Ranjit Philip
- Division of Pediatric Cardiology, University of Tennessee, Memphis, TN, United States
| | - Ajay Talati
- Division of Neonatology, University of Tennessee, Memphis, TN, United States
| | - Shyam Sathanandam
- Division of Pediatric Cardiology, University of Tennessee, Memphis, TN, United States
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Termerova J, Kuběna A, Paslerová R, Liška K. Worse outcomes of early targeted ibuprofen treatment compared to expectant management of patent ductus arteriosus in extremely premature infants. J Clin Neonatol 2021. [DOI: 10.4103/jcn.jcn_73_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Camfferman FA, de Goederen R, Govaert P, Dudink J, van Bel F, Pellicer A, Cools F. Diagnostic and predictive value of Doppler ultrasound for evaluation of the brain circulation in preterm infants: a systematic review. Pediatr Res 2020; 87:50-58. [PMID: 32218536 PMCID: PMC7098887 DOI: 10.1038/s41390-020-0777-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
INTRODUCTION Very and extremely preterm infants frequently have brain injury-related long-term neurodevelopmental problems. Altered perfusion, for example, seen in the context of a hemodynamically significant patent ductus arteriosus (PDA), has been linked to injury of the immature brain. However, a direct relation with outcome has not been reviewed systematically. METHODS A systematic review was conducted to provide an overview of the value of different cerebral arterial blood flow parameters assessed by Doppler ultrasound, in relation to brain injury, to predict long-term neurodevelopmental outcome in preterm infants. RESULTS In total, 23 studies were included. Because of heterogeneity of studies, a meta-analysis of results was not possible. All included studies on resistance index (RI) showed significantly higher values in subjects with a hemodynamically significant PDA. However, absolute differences in RI values were small. Studies using Doppler parameters to predict brain injury and long-term neurodevelopmental outcome were inconsistent. DISCUSSION There is no clear evidence to support the routine determination of RI or other Doppler parameters in the cerebral arteries to predict brain injury and long-term neurodevelopmental outcome in the preterm infant. However, there is evidence that elevated RI can point to the presence of a hemodynamically significant PDA.
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Affiliation(s)
- Fleur A Camfferman
- Department of Neonatology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Robbin de Goederen
- Dutch Craniofacial Centre Rotterdam, Department of Plastic and Reconstructive Surgery, Erasmus Medical Center University, Rotterdam, The Netherlands
| | - Paul Govaert
- Department of Neonatology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
- Department of Neonatology, Erasmus Medical Center University, Sophia Children's Hospital, Rotterdam, The Netherlands
- Department of Neonatology, ZNA Middelheim, Antwerp, Belgium
- Department of Rehabilitation and Physical Therapy, Gent University Hospital, Gent, Belgium
| | - Jeroen Dudink
- Department of Neonatology, Erasmus Medical Center University, Sophia Children's Hospital, Rotterdam, The Netherlands
- Department of Neonatology, University Medical Center Utrecht, Wilhelmina Children's Hospital, Utrecht, The Netherlands
| | - Frank van Bel
- Department of Neonatology, University Medical Center Utrecht, Wilhelmina Children's Hospital, Utrecht, The Netherlands
| | - Adelina Pellicer
- Department of Neonatology, La Paz University Hospital, Madrid, Spain
| | - Filip Cools
- Department of Neonatology, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
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Sung SI, Chang YS, Ahn SY, Jo HS, Yang M, Park WS. Conservative Non-intervention Approach for Hemodynamically Significant Patent Ductus Arteriosus in Extremely Preterm Infants. Front Pediatr 2020; 8:605134. [PMID: 33425816 PMCID: PMC7786118 DOI: 10.3389/fped.2020.605134] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 12/07/2020] [Indexed: 12/15/2022] Open
Abstract
While persistent patent ductus arteriosus (PDA) in preterm infants has been known to be associated with increased mortality and morbidities including bronchopulmonary dysplasia, and necrotizing enterocolitis, there is minimal evidence supporting their causal relationships, and most traditional medical and/or surgical treatments have failed to show improvements in these outcomes. As such, the pendulum has swung toward the conservative non-intervention approach for the management of persistent PDA during the last decade; however, the benefits and risks of this approach are unclear. In this mini review, we focused on whom, when, and how to apply the conservative non-intervention approach for persistent PDA, especially in extremely preterm infants.
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Affiliation(s)
- Se In Sung
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Yun Sil Chang
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - So Yoon Ahn
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Heui Seung Jo
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Misun Yang
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Won Soon Park
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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Mirza H, Garcia J, McKinley G, Hubbard L, Sensing W, Schneider J, Oh W, Wadhawan R. Duration of significant patent ductus arteriosus and bronchopulmonary dysplasia in extremely preterm infants. J Perinatol 2019; 39:1648-1655. [PMID: 31554913 DOI: 10.1038/s41372-019-0496-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 07/01/2019] [Accepted: 07/23/2019] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To demonstrate the association between the duration of significant patent ductus arteriosus (PDA) and bronchopulmonary dysplasia (BPD) in extremely preterm infants. METHODS All extremely preterm infants (<29 weeks) treated in our Neonatal Intensive Care Unit from January 2013 to March 2016 were included if their PDA status was confirmed at <7 days of life. Infants with genetic syndromes, complex congenital anomalies and insignificant PDAs were excluded. Total duration of significant PDA was estimated by reviewing serial echocardiograms. Significant PDA was diagnosed using our scoring system that was based upon echocardiographic parameters and clinical status of the infants. Study cohort was divided into four groups based on the duration of significant PDA. Group A-No PDA, Group B-PDA <1-week, Group C- PDA 1-2 weeks, and Group D-PDA >2 weeks. ANOVA and multivariate analysis were performed to compare the groups. RESULTS There were 147 infants with no PDA (Group A), 50, 35, and 41 infants were enrolled in Groups B, C, and D, respectively. There were no differences in maternal and neonatal variables among groups except for the following: maternal smoking, chorioamnionitis, antenatal indomethacin, gestation, birth weight, mode of delivery and incidence of death or BPD. Logistic regression analysis showed that longer duration of significant PDA was associated with higher risk for death or BPD (adjusted OR 1.37, 95% CI 1.03-1.82). CONCLUSION Longer duration of significant PDA is associated with the higher risk for BPD/death in extremely preterm infants.
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Affiliation(s)
- Hussnain Mirza
- Center for Neonatal Care, Advent Health for Children/ UCF College of Medicine, Orlando, FL, USA.
| | - Jorge Garcia
- Division of Pediatric Cardiology, Advent Health for Children, Orlando, FL, USA
| | - Genevieve McKinley
- Pediatric Residency Program, Advent Health for Children, Orlando, Fl, USA
| | - Laura Hubbard
- Center for Neonatal Care, Advent Health for Children/ UCF College of Medicine, Orlando, FL, USA
| | - Wendla Sensing
- Pediatric Residency Program, Advent Health for Children, Orlando, Fl, USA
| | - Jordan Schneider
- Pediatric Residency Program, Advent Health for Children, Orlando, Fl, USA
| | - William Oh
- Office of Research Advancement and Support, Florida Hospital, Orlando, FL, USA
| | - Rajan Wadhawan
- Center for Neonatal Care, Advent Health for Children/ UCF College of Medicine, Orlando, FL, USA
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Köksal N, Aygün C, Uras N. Turkish Neonatal Society guideline on the management of patent ductus arteriosus in preterm infants. Turk Arch Pediatr 2018; 53:S76-S87. [PMID: 31236021 PMCID: PMC6568296 DOI: 10.5152/turkpediatriars.2018.01808] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Ductus arteriosus is a physiologic phenomenon in utero and it closes spontaneously in term babies. The closure is problematic in preterm infants due to the intrinsic properties of the preterm ductus arteriosus tissue. Although patent ductus arteriosus has been reported to be associated with many adverse outcomes in this population, treatment has not led to a decrease in outcomes such as bronchopulmonary dysplasia. Treatment modalities also have their own risks and restrictions. The aim of the "Turkish Neonatal Society guidelines for the management of patent ductus arteriosus in preterm babies" is to standardize the diagnosis and treatment of patent ductus arteriosus in preterm infants by combining the current scientific data and the resources of our country.
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Affiliation(s)
- Nilgün Köksal
- Division of Neonatology, Department of Pediatrics, Uludağ University, Faculty of Medicine, Bursa, Turkey
| | - Canan Aygün
- Division of Neonatology, Department of Pediatrics, Ondokuz Mayıs University, Faculty of Medicine, Samsun, Turkey
| | - Nurdan Uras
- Zekai Tahir Burak Womens' Health Training and Research Hospital, Ankara, Turkey
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Management strategies for the preemie ductus. Curr Opin Cardiol 2018; 34:41-45. [PMID: 30394907 DOI: 10.1097/hco.0000000000000580] [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] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Patent ductus arteriosus (PDA) remains the most common cardiovascular condition afflicting neonates. Despite 5 decades of scientific inquiry pediatric cardiologists and neonatologists still cannot answer the simple question of which PDAs should be treated. RECENT FINDINGS Although the volume of the shunt is difficult to calculate, echocardiography, biochemical markers, and clinical exam can provide clues to the magnitude and physiologic consequences of the shunt. Epidemiologic data exists showing a positive relationship between a PDA and numerous morbidities. As a result, for most of the 20th and early 21st century, nearly all PDAs where indiscriminately considered to be hemodynamically significant and attempts to close it where initiated shortly after birth. However, no randomized trials of PDA closure have been able to show significant differences between affected and unaffected groups. In fact, surgical ligation has repeatedly been associated with increased morbidities and worse long-term neurodevelopmental outcomes. As a result, most clinicians favor a strategy of watchful waiting. SUMMARY In this review, we aim to summarize the scientific literature, along with some of the contemporary biases, that exist with regards to the pathophysiology, genetics, and treatment strategies for the neonatal PDA.
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Elsayed YN, Fraser D. Patent Ductus Arteriosus in Preterm Infants, Part 1: Understanding the Pathophysiologic Link Between the Patent Ductus Arteriosus and Clinical Complications. Neonatal Netw 2018; 36:265-272. [PMID: 28847349 DOI: 10.1891/0730-0832.36.5.265] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The clinical guidelines for treating patent ductus arteriosus (PDA) have significantly evolved over the last decades from treating any ductal shunt to more conservative management where only the hemodynamically significant patent ductus arteriosus (HSPDA) is treated. This shift has resulted largely from a lack of evidence from randomized controlled trials supporting a relationship between treating a PDA and improving long-term neonatal outcomes. However, there are many unresolved issues. There is no consensus on the precise definition of HSPDA requiring treatment or a clear understanding of when to treat HSPDA. Moreover, the current evidence shows worsening of the long-term neurodevelopmental outcome for infants undergoing surgical PDA ligation.<br/> The presence of physiologic variability among preterm infants, and the presence of different compensatory mechanisms may make it difficult to establish a link between pathophysiology and long-term outcomes. That is, the physiologic variability cannot be simply assessed by randomly assigning infants into two arms of a study. Relying on research from animal and human studies, this article explains the link between the pathophysiology of a PDA and neonatal outcomes.
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Kalikkot Thekkeveedu R, Guaman MC, Shivanna B. Bronchopulmonary dysplasia: A review of pathogenesis and pathophysiology. Respir Med 2017; 132:170-177. [PMID: 29229093 PMCID: PMC5729938 DOI: 10.1016/j.rmed.2017.10.014] [Citation(s) in RCA: 239] [Impact Index Per Article: 34.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 08/23/2017] [Accepted: 10/20/2017] [Indexed: 12/31/2022]
Abstract
Bronchopulmonary dysplasia (BPD) is a chronic lung disease of primarily premature infants that results from an imbalance between lung injury and repair in the developing lung. BPD is the most common respiratory morbidity in preterm infants, which affects nearly 10, 000 neonates each year in the United States. Over the last two decades, the incidence of BPD has largely been unchanged; however, the pathophysiology has changed with the substantial improvement in the respiratory management of extremely low birth weight (ELBW) infants. Here we have attempted to comprehensively review and summarize the current literature on the pathogenesis and pathophysiology of BPD. Our goal is to provide insight to help further progress in preventing and managing severe BPD in the ELBW infants.
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Affiliation(s)
| | - Milenka Cuevas Guaman
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Binoy Shivanna
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.
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Härkin P, Marttila R, Pokka T, Saarela T, Hallman M. Morbidities associated with patent ductus arteriosus in preterm infants. Nationwide cohort study. J Matern Fetal Neonatal Med 2017. [DOI: 10.1080/14767058.2017.1347921] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Pia Härkin
- PEDEGO Research Unit and Medical Research Center Oulu, University of Oulu, Finland
- Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland
| | - Riitta Marttila
- PEDEGO Research Unit and Medical Research Center Oulu, University of Oulu, Finland
- Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland
| | - Tytti Pokka
- PEDEGO Research Unit and Medical Research Center Oulu, University of Oulu, Finland
- Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland
| | - Timo Saarela
- PEDEGO Research Unit and Medical Research Center Oulu, University of Oulu, Finland
- Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland
| | - Mikko Hallman
- PEDEGO Research Unit and Medical Research Center Oulu, University of Oulu, Finland
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Ngo S, Profit J, Gould JB, Lee HC. Trends in Patent Ductus Arteriosus Diagnosis and Management for Very Low Birth Weight Infants. Pediatrics 2017; 139:peds.2016-2390. [PMID: 28562302 PMCID: PMC5369670 DOI: 10.1542/peds.2016-2390] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/17/2017] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE To examine yearly trends of patent ductus arteriosus (PDA) diagnosis and treatment in very low birth weight infants. METHODS In this retrospective cohort study of very low birth weight infants (<1500 g) between 2008 and 2014 across 134 California hospitals, we evaluated PDA diagnosis and treatment by year of birth. Infants were either inborn or transferred in within 2 days after delivery and had no congenital abnormalities. Intervention levels for treatment administered to achieve ductal closure were categorized as none, pharmacologic (indomethacin or ibuprofen), both pharmacologic intervention and surgical ligation, or ligation only. Multivariable logistic regression was used to assess risk factors for PDA diagnosis and treatment. RESULTS PDA was diagnosed in 42.8% (12 002/28 025) of infants, with a decrease in incidence from 49.2% of 4205 infants born in 2008 to 38.5% of 4001 infants born in 2014. Pharmacologic and/or surgical treatment was given to 30.5% of patients. Between 2008 and 2014, the annual rate of infants who received pharmacologic intervention (30.5% vs 15.7%) or both pharmacologic intervention and surgical ligation (6.9% vs 2.9%) decreased whereas infants who were not treated (60.5% vs 78.3%) or received primary ligation (2.2% vs 3.0%) increased. CONCLUSIONS There is an increasing trend toward not treating patients diagnosed with PDA compared with more intensive treatments: pharmacologic intervention or both pharmacologic intervention and surgical ligation. Possible directions for future study include the impact of these trends on hospital-based and long-term outcomes.
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Affiliation(s)
- Samantha Ngo
- School of Public Health, University of California, Berkeley, Berkeley, California;
| | - Jochen Profit
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University, Stanford, California; and,California Perinatal Quality Care Collaborative, Stanford, California
| | - Jeffrey B. Gould
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University, Stanford, California; and,California Perinatal Quality Care Collaborative, Stanford, California
| | - Henry C. Lee
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University, Stanford, California; and,California Perinatal Quality Care Collaborative, Stanford, California
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18
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Near-infrared spectroscopy for detection of a significant patent ductus arteriosus. Pediatr Res 2016; 80:675-680. [PMID: 27603562 DOI: 10.1038/pr.2016.148] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 05/27/2016] [Indexed: 11/08/2022]
Abstract
BACKGROUND Near-infrared spectroscopy (NIRS) may assist with characterization of a hemodynamically significant patent ductus arteriosus (hsPDA) by measuring cerebral and renal saturation (Csat and Rsat) levels. We hypothesized that Csat and Rsat in preterm infants with an hsPDA would be decreased compared to those with no PDA or nonsignificant PDA. METHODS This non a-priori designed study retrospectively investigated clinical and ECHO characteristics of preterm infants <29 wk gestation who underwent routine NIRS monitoring. Logistic regression assessed association between NIRS measures and an hsPDA by ECHO. RESULTS Of 47 infants, 21 had a confirmed hsPDA by ECHO, 14 had a nonsignificant PDA, and 12 had no ECHO performed due to low clinical suspicion for PDA. Logistic regression adjusted for gestational age found that lower Rsat was associated with an hsPDA by ECHO (OR 0.9, 95% CI 0.83-0.98, P = 0.01). Using ROC curves, Rsat < 66% identified an hsPDA with a sensitivity of 81% and specificity of 77%, while Csat was not significant. CONCLUSION Low Rsat < 66% was associated with the presence of an hsPDA in the preterm infant. Csat may be preserved if cerebral autoregulation is largely intact. Bedside NIRS monitoring may reasonably increase suspicion for a significant PDA in the preterm infant.
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Sung SI, Chang YS, Chun JY, Yoon SA, Yoo HS, Ahn SY, Park WS. Mandatory Closure Versus Nonintervention for Patent Ductus Arteriosus in Very Preterm Infants. J Pediatr 2016; 177:66-71.e1. [PMID: 27453374 DOI: 10.1016/j.jpeds.2016.06.046] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 04/26/2016] [Accepted: 06/13/2016] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To determine whether a nonintervention approach for treating hemodynamically significant patent ductus arteriosus (PDA) is associated with decreased mortality and/or morbidity compared with a mandatory closure approach in extremely low birth weight infants. STUDY DESIGN We reviewed the medical records of 178 infants of 23-26 weeks' gestational age with PDA, requiring ventilator treatment, and with hemodynamically significant PDA ≥2 mm in size. Mandatory closure was used during period I (July 2009 to December 2011, n = 81), and nonintervention was used during period II (January 2012 to June 2014, n = 97). RESULTS During period I, 64% of infants were first treated with indomethacin, and 82% were ultimately ligated surgically. During period II, no infant was treated with indomethacin and/or ligation. The average postnatal day of PDA closure was day 13 and day 44 during periods I and II, respectively. There was significantly more use of diuretics and fluid restriction during period II compared with period I. There was no difference in mortality or morbidities such as necrotizing enterocolitis or intraventricular hemorrhage. The incidence of bronchopulmonary dysplasia (BPD) and the propensity score adjusted OR of BPD were significantly lower during period II compared with period I. CONCLUSIONS Despite longer PDA exposure, nonintervention was associated with significantly less BPD compared with mandatory closure. Additional study is warranted to determine the benefits and risks of non-intervention for the hemodynamically significant PDA in extremely low birth weight infants.
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Affiliation(s)
- Se In Sung
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Yun Sil Chang
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Ji Young Chun
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Shin Ae Yoon
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hye Soo Yoo
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - So Yoon Ahn
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Won Soon Park
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
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20
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Du JF, Liu TT, Wu H. [Risk factors for patent ductus arteriosus in early preterm infants: a case-control study]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2016; 18:15-19. [PMID: 26781406 PMCID: PMC7390094 DOI: 10.7499/j.issn.1008-8830.2016.01.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 10/30/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To investigate the risk factors for the occurrence of patent ductus arteriosus (PDA) and to provide a clinical basis for reducing the occurrence of PDA in early preterm infants. METHODS A total of 136 early preterm infants (gestational age≤32 weeks) who were hospitalized between January 2013 and December 2014 and diagnosed with hemodynamicalhy significant PDA (hs-PDA) were enrolled as the case group. Based on the matched case-control principle, 136 early preterm infants without hs-PDA were selected among those who were hospitalized within the same period at a ratio of 1:1 and enrolled as the control group. The two groups were matched for sex and gestational age. The basic information of neonates and maternal conditions during the pregnancy and perinatal periods were collected. Logistic regression analysis was performed to identify the risk factors for the development of PDA. RESULTS Univariate analysis showed that neonatal infectious diseases, neonatal respiratory distress syndrome, decreased platelet count within 24 hours after birth, and low birth weight were associated with the development of hs-PDA (P<0.05). Multivariate conditional logistic regression analysis revealed that neonatal infectious diseases (OR=2.368) and decreased platelet count within 24 hours after birth (OR=0.996) were independent risk factors for hs-PDA. CONCLUSIONS Neonatal infectious diseases and decreased platelet count within 24 hours after birth increase the risk of hs-PDA in early preterm infants.
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Affiliation(s)
- Jin-Feng Du
- First Hospital of Jilin University, Changchun 130000, China.
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21
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Du JF, Liu TT, Wu H. [Risk factors for patent ductus arteriosus in early preterm infants: a case-control study]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2016; 18:15-9. [PMID: 26781406 PMCID: PMC7390094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 10/30/2015] [Indexed: 08/01/2024]
Abstract
OBJECTIVE To investigate the risk factors for the occurrence of patent ductus arteriosus (PDA) and to provide a clinical basis for reducing the occurrence of PDA in early preterm infants. METHODS A total of 136 early preterm infants (gestational age≤32 weeks) who were hospitalized between January 2013 and December 2014 and diagnosed with hemodynamicalhy significant PDA (hs-PDA) were enrolled as the case group. Based on the matched case-control principle, 136 early preterm infants without hs-PDA were selected among those who were hospitalized within the same period at a ratio of 1:1 and enrolled as the control group. The two groups were matched for sex and gestational age. The basic information of neonates and maternal conditions during the pregnancy and perinatal periods were collected. Logistic regression analysis was performed to identify the risk factors for the development of PDA. RESULTS Univariate analysis showed that neonatal infectious diseases, neonatal respiratory distress syndrome, decreased platelet count within 24 hours after birth, and low birth weight were associated with the development of hs-PDA (P<0.05). Multivariate conditional logistic regression analysis revealed that neonatal infectious diseases (OR=2.368) and decreased platelet count within 24 hours after birth (OR=0.996) were independent risk factors for hs-PDA. CONCLUSIONS Neonatal infectious diseases and decreased platelet count within 24 hours after birth increase the risk of hs-PDA in early preterm infants.
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Affiliation(s)
- Jin-Feng Du
- First Hospital of Jilin University, Changchun 130000, China.
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Abstract
Gene-environment interactions likely account for some degree of the variance in response rates that are clinically observed with antenatal corticosteroids, breast milk prophylaxis, surfactant administration, early recognition and treatment of sepsis, utility of non-invasive ventilation, and judicious exposure to supplemental oxygen. While these therapies and practice guidelines have significantly decreased overall neonatal mortality in the NICU, they have not made a marked impact on the frequency and severity of conditions such as bronchopulmonary dysplasia (BPD), necrotizing enterocolitis, and periventricular leukomalacia. One possible explanation is that genetic factors in the neonate modulate response to external intervention or preventative agents, culminating in variable levels of injury and different degrees of resolution and repair. Gene-environment explanations are supported by the observed heritability of BPD in twin studies, but they do not differentiate the interactions between neonate and offending toxin or pathogen, from interactions between neonate and intervention or therapeutic agent. Likely, both kinds of interactions are important in determining outcome.
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Affiliation(s)
- Vineet Bhandari
- Division of Perinatal Medicine, Department of Pediatrics, Yale University School of Medicine, New Haven, CT; Yale Child Health Research Center, Department of Pediatrics, Yale University School of Medicine, New Haven, CT.
| | - Jeffrey R Gruen
- Division of Perinatal Medicine, Department of Pediatrics, Yale University School of Medicine, New Haven, CT; Yale Child Health Research Center, Department of Pediatrics, Yale University School of Medicine, New Haven, CT; Department of Genetics, Yale University School of Medicine, New Haven, CT; Department of Investigative Medicine, Yale University School of Medicine, New Haven, CT
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Abstract
PURPOSE OF REVIEW A patent ductus arteriosus (PDA) in premature infants is common and is associated with a number of adverse outcomes. The purpose of this review is to discuss recent literature in PDA diagnosis and management. RECENT FINDINGS The diagnosis of a 'hemodynamically significant' PDA is challenging and a robust definition is lacking. The risks and benefits of therapies, either medical or surgical, designed to close the PDA, are controversial. Oral acetaminophen has gained increasing attention as an alternative pharmaceutical agent for PDA closure in premature infants, although safety concerns remain. Compared to surgical ligation, transcatheter PDA closure may be associated with less risk and fewer adverse events. Both aggressive and conservative management of PDA has similar clinically important outcomes, although the strength of evidence is derived mostly from cohort studies. SUMMARY Clinicians should weigh the potential adverse effects of pharmaceutical or surgical PDA closure against the likelihood of spontaneous closure. The infant population most likely to benefit from PDA closure remains ill-defined and clinical context is recommended.
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Development of left ventricular longitudinal speckle tracking echocardiography in very low birth weight infants with and without bronchopulmonary dysplasia during the neonatal period. PLoS One 2014; 9:e106504. [PMID: 25184634 PMCID: PMC4153617 DOI: 10.1371/journal.pone.0106504] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 08/07/2014] [Indexed: 11/20/2022] Open
Abstract
Objectives In preterm infants, postnatal myocardial adaptation may be complicated by bronchopulmonary dysplasia (BPD). We aimed to describe the development of left ventricular function by serial 2D, Doppler, and speckle tracking echocardiography (2D-STE) in infants with and without BPD during the neonatal period and compare these to anthropometric and conventional hemodynamic parameters. Study Design Prospective echocardiography on day of life (DOL) 1, 7, 14, and 28 in 119 preterm infants <1500 g birth weight of whom 36 developed BPD (need for oxygen supplementation at 36 weeks gestational age). Non-BPD and BPD infants differed significantly in median (IQR) gestational age (25.5(24–26.5) weeks vs. 29(27–30) weeks, p<0.001) and birth weight (661(552–871) g vs. 1100(890–1290) g, p<0.001). Results The intra- and inter-observer variability of the 2D-STE parameters measured did not depend on time of measurement, although there were significant differences in the reproducibility of the parameters. Low intra- and inter-observer variability was seen for longitudinal systolic strain and strain rate mid septum with a median CV (coefficient of variation) of <4.6%. Much higher CVs (>10%) were seen for the apical segment. While anthropometric parameters show rapid development during the first 4 weeks of life, the speckle tracking parameters did not differ statistically significantly during the neonatal period. Infants with and without BPD differed significantly (p<0.001) in the development of anthropometric parameters, conventional hemodynamic parameters except for heart rate, and 2D-STE parameters: global longitudinal systolic strain rate (GLSSR) and longitudinal systolic strain for the mid left wall (LSSR). The largest differences were seen at DOL 1 and 7 in GLSSR (p<0.001) and in LSSR (p<0.01). Conclusions Reproducible 2D-STE measurements are possible in preterm infants <1500 g. Cardiac deformation reveals early (DOL 1 and 7) ventricular changes (GLSSR and LSSR) in very low birth weight infants who develop BPD.
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Abstract
PURPOSE OF REVIEW Advances in medical therapy have increased survival of extremely premature infants and changed the pathology of bronchopulmonary dysplasia (BPD) from one of acute lung injury to a disease of disrupted lung development. With this evolution, new questions emerge regarding the molecular mechanisms that control postnatal lung development, the effect of early disruptions of postnatal lung development on long-term lung function, and the existence of endogenous mechanisms that permit lung regeneration after injury. RECENT FINDINGS Recent data demonstrate that a significant component of alveolarization, the final stage of lung development, occurs postnatally. Further, clinical and experimental studies demonstrate that premature birth disrupts alveolarization, decreasing the gas exchange surface area of the lung and causing BPD. BPD is associated with significant short-term morbidity, and new longitudinal, clinical data demonstrate that survivors of BPD have long-standing deficits in lung function and may be at risk for the development of additional lung disease as adults. Unfortunately, current care is mainly supportive with few effective therapies that prevent or treat established BPD. These studies underscore the need to further elucidate the mechanisms that direct postnatal lung growth and develop innovative strategies to stimulate lung regeneration. SUMMARY Despite significant improvements in the care and survival of extremely premature infants, BPD remains a major clinical problem. Although efforts should remain focused on the prevention of preterm labor and BPD, novel research aimed at promoting postnatal alveolarization offers a unique opportunity to develop effective strategies to treat established BPD.
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