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Lin SY, Chiang MC, Wu WH, Wu IH, Lai MY, Chu SM, Lien R, Hsu KH. Point-of-care ultrasound (POCUS) for tip localization of neonatal peripherally inserted central catheter (PICC): A prospective study. Pediatr Neonatol 2024; 65:375-380. [PMID: 38114415 DOI: 10.1016/j.pedneo.2023.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/25/2023] [Accepted: 07/18/2023] [Indexed: 12/21/2023] Open
Affiliation(s)
- Shu-Yu Lin
- Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ming-Chou Chiang
- Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan; School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Wei-Hung Wu
- Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - I-Hsyuan Wu
- Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan; School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Mei-Yin Lai
- Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan; School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Shih-Ming Chu
- Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan; School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Reyin Lien
- Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan; School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Kai-Hsiang Hsu
- Division of Neonatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan; School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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Takahashi D, Liu L, Sinderby C, Beck J. Feasibility of neurally synchronized and proportional negative pressure ventilation in a small animal model. Physiol Rep 2021; 8:e14499. [PMID: 32633080 PMCID: PMC7379043 DOI: 10.14814/phy2.14499] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 05/15/2020] [Indexed: 11/24/2022] Open
Abstract
RATIONALE Synchronized positive pressure ventilation is possible using diaphragm electrical activity (EAdi) to control the ventilator. It is unknown whether EAdi can be used to control negative pressure ventilation. AIM To evaluate the feasibility of using EAdi to control negative pressure ventilation. METHODS Fourteen anesthetized rats were studied (380-590 g) during control, resistive breathing, acute lung injury or CO2 rebreathing. Positive pressure continuous neurally adjusted ventilatory assist (cNAVAP+ ) was applied via intubation. Negative pressure cNAVA (cNAVAP- ) was applied with the animal placed in a sealed box. In part 1, automatic stepwise increments in cNAVA level by 0.2 cmH2 O/µV every 30 s was applied for cNAVAP+ , cNAVAP- , and a 50/50 combination of the two (cNAVAP± ). In part 2: During 5-min ventilation with cNAVAP+ or cNAVAP- we measured circuit, box, and esophageal (Pes) pressure, EAdi, blood pressure, and arterial blood gases. RESULTS Part 1: During cNAVAP+ , pressure in the circuit increased with increasing cNAVA levels, reaching a plateau, and similarly for cNAVAP- , albeit reversed in sign. This was associated with downregulation of the EAdi. Pes swings became less negative with cNAVAP+ but, in contrast, Pes swings were more negative during increasing cNAVAP- levels. Increasing the cNAVA level during cNAVAP± resulted in an intermediate response. Part 2: no significant differences were observed for box/circuit pressures, EAdi, blood pressure, or arterial blood gases. Pes swings during cNAVAP- were significantly more negative than during cNAVAP+ . CONCLUSION Negative pressure ventilation synchronized and proportional to the diaphragm activity is feasible in small animals.
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Affiliation(s)
| | - Ling Liu
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Christer Sinderby
- Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Department of Critical Care, St. Michael's Hospital, Toronto, ON, Canada.,Institute for Biomedical Engineering and Science Technology (iBEST), Ryerson University and St-Michael's Hospital, Toronto, ON, Canada.,Department of Medicine and Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
| | - Jennifer Beck
- Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Department of Critical Care, St. Michael's Hospital, Toronto, ON, Canada.,Institute for Biomedical Engineering and Science Technology (iBEST), Ryerson University and St-Michael's Hospital, Toronto, ON, Canada.,Department of Pediatrics, University of Toronto, Toronto, ON, Canada
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Arimitsu T, Wakabayashi D, Tamaoka S, Takahashi M, Hida M, Takahashi T. Case Report: Intact Survival of a Marginally Viable Male Infant Born Weighing 268 Grams at 24 Weeks Gestation. Front Pediatr 2021; 8:628362. [PMID: 33614546 PMCID: PMC7888275 DOI: 10.3389/fped.2020.628362] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 12/23/2020] [Indexed: 11/17/2022] Open
Abstract
We report the case of a preterm small for gestational age male infant born at 24 weeks of gestation with a birth weight of 268 g who was discharged from our hospital without the requirement for home oxygen therapy or tube feeding. He did not experience severe intraventricular hemorrhage, periventricular leukomalacia, hearing disability, or any other serious complications. At that time (February 2019), according to the University of Iowa's Tiniest Babies Registry, he was the tiniest male infant in the world to survive without any serious complications other than severe retinopathy of prematurity that required laser therapy. Although the survival rate of infants with extremely low birth weight is improving worldwide, a high mortality rate and incidence of severe complications remain common for infants weighing <300 g at birth, particularly in male infants. In recent years, there have been frequent discussions regarding the ethical and social issues involved in treating extremely preterm infants weighing <400 g. Despite the challenges, reports of such infants surviving are increasing. Neonatal medicine has already achieved great success in treating infants weighing 400 g or more at birth. However, lack of evidence and experience may make physicians reluctant to treat infants weighing less than this. The present case demonstrates that intact survival of a marginally viable male infant with a birth weight of <300 g is possible with minimal handling and family involvement beginning shortly after birth. Our detailed description of the clinical course of this case should provide invaluable information to physicians around the world who treat such infants. This report will aid in the progress of neonatal medicine and help to address many of the social and ethical issues surrounding their care.
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Affiliation(s)
- Takeshi Arimitsu
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
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Beardsall K, Thomson L, Guy C, van Weissenbruch MM, Iglesias I, Muthukumar P, Somisetty SK, Bond S, Petrou S, Dunger D. Protocol of a randomised controlled trial of real-time continuous glucose monitoring in neonatal intensive care 'REACT'. BMJ Open 2018; 8:e020816. [PMID: 29866729 PMCID: PMC5988133 DOI: 10.1136/bmjopen-2017-020816] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
INTRODUCTION Hyperglycaemia is common in the very preterm infant and has been associated with adverse outcomes. Preventing hyperglycaemia without increasing the risk of hypoglycaemia has proved challenging. The development of real-time continuous glucose monitors (CGM) to inform treatment decisions provides an opportunity to reduce this risk. This study aims to assess the feasibility of CGM combined with a specifically designed paper guideline to target glucose control in the preterm infant. METHODS AND ANALYSES The Real Time Continuous Glucose Monitoring in Neonatal Intensive Care (REACT) trial is an international multicentre randomised controlled trial. 200 preterm infants ≤1200 g and ≤24 hours of age will be randomly allocated to either real-time CGM or standard care (with blinded CGM data collection). The primary outcome is time in target 2.6-10 mmol/L during the study intervention assessed using CGM. Secondary outcomes include efficacy relating to glucose control, utility including staff acceptability, safety outcomes relating to incidence and prevalence of hypoglycaemia and health economic analyses. ETHICS AND DISSEMINATION The REACT trial has been approved by the National Health Service Health Research Authority National Research Ethics Service Committee East of England (Cambridge Central); Medical Ethics Review Committee, VU University Medical Centre, Amsterdam, The Netherlands and the Research Ethics Committee, Sant Joan de Déu Research Foundation, Barcelona, Spain. Recruitment began in July 2016 and will continue until mid-2018. The trial has been adopted by the National Institute of Health Research Clinical Research Network portfolio (ID: 18826) and is registered with anInternational Standard Randomised Control Number (ISRCTN registry ID: 12793535). Dissemination plans include presentations at scientific conferences, scientific publications and efforts at stakeholder engagement. TRIAL REGISTRATION NUMBER ISRCTN12793535; Pre-results.
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Affiliation(s)
- Kathryn Beardsall
- Department of Paediatrics, University of Cambridge, Cambridge, UK
- Department of Paediatrics and Neonatology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Lynn Thomson
- Department of Paediatrics, University of Cambridge, Cambridge, UK
- Department of Paediatrics and Neonatology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Catherine Guy
- Department of Paediatrics, University of Cambridge, Cambridge, UK
| | | | - Isabel Iglesias
- Department of Paediatrics, Sant Joan de Déu, Barcelona, Catalunya, Spain
| | - Priya Muthukumar
- Department of Paediatrics, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, UK
| | | | - Simon Bond
- Cambridge Clinical Trials Unit, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Stavros Petrou
- Division of Health Sciences, Warwick Medical School, University of Warwick, Coventry, UK
| | - David Dunger
- Department of Paediatrics, University of Cambridge, Cambridge, UK
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Latini G, De Felice C, Giannuzzi R, Del Vecchio A. Survival rate and prevalence of bronchopulmonary dysplasia in extremely low birth weight infants. Early Hum Dev 2013; 89 Suppl 1:S69-73. [PMID: 23809356 DOI: 10.1016/s0378-3782(13)70020-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) continues to represent a significant cause of morbidity among survivors of severe prematurity in the NICU. The increasing prevalence of BPD over the decades has been suggested to be related to the increased survival of extremely low birthweight infants. AIMS To evaluate differences in prevalence of BPD (BPD28d and BPD36wk) and as a function of survival rate in extremely low birth weight (ELBW) infants over time, and to explore its relationship with known associated risk factors. METHODS Survival rate and prevalence of oxygen-dependency =28 days (BPD28d) and oxygen-dependency =36 weeks postmenstrual age (BPD36wk) were evaluated in ELBW newborns (mean gestational age: 27.12.2 weeks; mean birth weight: 817142 g) consecutively admitted to the Brindisi NICU over the last 26 years. Two arbitrarily chosen time periods were compared: Period 1: July 1st, 1986 to June 30, 2002 vs. Period 2: July 1st, 2002 to December 31, 2012. Analyzed variables included gestational age, birth weight, intubation time, hours of O2 administration, NCPAP, and use of surfactant. Differences between the time periods were assessed by chi-square statistics, Fisher's tests or Mann-Whitney test, as appropriate. A two-tailed p value <0.05 was considered to indicate statistical significance. RESULTS Survival rate of ELBW infants over the examined time periods dramatically improved from 42.3% to 72.6% (p < 0.0001), whereas changes in the prevalence of BPD28d and BPD36wk were not statistically significant (30.5% vs. 39.3%, p = 0.2137 and 5.5% vs. 13.1%, p = 0.1452, respectively). Likewise, BPD severity was not significantly different between the two time periods (p = 0.1635). Gestational age and birth weight of surviving neonates did not significantly change between the two time periods (p = 0.8050 and p = 0.6986, respectively), whereas significantly increased intubation time (median values: 144 hours vs. 33 hours, p <0.0001) and use of exogenous surfactant (89.3% vs. 48.6%, p < 0.0001) was evidenced for the second time period, as well as NCPAP (median values: 600 hours vs. 377 hours, p = 0.0005). A statistically non-significant trend for a prolonged O2 administration in period 2 (p = 0.0850) was also observed. CONCLUSION Our findings indicate that a significantly increased survival is not necessarily associated with a significant difference in the prevalence of BPD among ELBW infants.
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Affiliation(s)
- Giuseppe Latini
- Division of Neonatology, Perrino Hospital, Brindisi, Italy; Clinical Physiology Institute (IFC-CNR), National Research Council of Italy, Lecce Section, Italy
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Duarte PECR, Coutinho SB. Fatores associados à displasia broncopulmonar em prematuros sob ventilação mecânica precoce. REVISTA BRASILEIRA DE SAÚDE MATERNO INFANTIL 2012. [DOI: 10.1590/s1519-38292012000200004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJETIVOS: descrever os fatores neonatais e de assistência ventilatória associados à displasia broncopulmonar (DBP), e verificar sua frequência em recém-nascidos prematuros submetidos à ventilação mecânica (VM) na primeira semana de vida. MÉTODOS: coorte retrospectiva, realizada em Unidade de Terapia Intensiva Neonatal. Foram analisados prontuários de 86 prematuros, sob VM na primeira semana de vida e registrados dados neonatais, parâmetros da VM e sua relação com a DBP. Para verificar a associação entre as variáveis do estudo e a DBP utilizou-se o teste do qui-quadrado e o Exato de Fisher quando indicado. O teste t e o Kruskal Wallis foram utilizados para a comparação das médias das variáveis contínuas. RESULTADOS: a DBP ocorreu em 17,4%. Foram relacionados à doença: menor peso ao nascer e idade gestacional, Apgar <7 no 1º e 5º minutos, maior tempo sob antibioticoterapia, nutrição parenteral e VM, valores elevados de fração inspirada de oxigênio (FiO2), VM como primeiro suporte respiratório, menor volume de nutrição enteral e ganho ponderal . Não houve diferença nos níveis de pressão positiva inspiratória, pressão positiva expiratória final e diferença de pressão. CONCLUSÕES: a ocorrência da DBP foi baixa e relacionada ao manejo clínico e nutricional e VM precoce e prolongada. Excetuando-se a FiO2 média não foi encontrada relação entre a doença e os demais parâmetros ventilatórios.
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7
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Mulder EEM, Lopriore E, Rijken M, Walther FJ, te Pas AB. Changes in respiratory support of preterm infants in the last decade: are we improving? Neonatology 2012; 101:247-53. [PMID: 22222256 DOI: 10.1159/000334591] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 10/20/2011] [Indexed: 11/19/2022]
Abstract
BACKGROUND Ventilator-induced lung injury has been recognized as a major contributing factor for bronchopulmonary dysplasia (BPD) in preterm infants. In the last decade, focus has shifted towards a more gentle respiratory approach. AIM To evaluate whether guideline changes in respiratory management in the delivery room and the unit improved the incidence of BPD in very preterm infants. METHODS Three cohorts of infants <30 weeks of gestation, born at the Leiden University Medical Center in the Netherlands in 1996-1997 (cohort '96), 2003-2004 (cohort '03) and 2008-2009 (cohort '08), were compared retrospectively. The major change was increasing use of continuous positive airway pressure in time, and monitoring the tidal volume during mechanical ventilation in cohort '08. The primary outcome was BPD at 36 weeks. RESULTS The incidence of BPD did not change from 47% in cohort '96 to 55% in cohort '03 (n.s.), but decreased significantly to 37% in cohort '08 (cohort '96 vs. '08 and cohort '03 vs. '08: p < 0.01). We observed the same effect when only moderate and severe BPD were counted with 27% in cohort '96, 31% in cohort '03 and 14% in '08 (cohort '96 vs. '03: p = n.s., cohort '96 vs. '08: p < 0.01, cohort '03 vs. '08: p < 0.05). The mortality rate was not significantly different between the three cohorts. CONCLUSION The incidence of BPD in our cohort of preterm infants has decreased during the last decade and could be due to the changes in respiratory management.
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Affiliation(s)
- E E M Mulder
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
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Nasal intermittent positive pressure ventilation in the newborn: review of literature and evidence-based guidelines. J Perinatol 2010; 30:505-12. [PMID: 19847188 DOI: 10.1038/jp.2009.165] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Various modes of nasal continuous positive airway pressure have been well established as a means of providing non-invasive respiratory support in the neonate. Recent reports suggest that nasal intermittent positive pressure ventilation may offer a better alternative, as a mode of non-invasive ventilation. This article will critically review the literature and provide some practical guidelines of the use of this technique in neonates.
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Abstract
The use of mechanical ventilation in premature infants with respiratory distress syndrome (RDS) and respiratory failure often results in barotrauma, volutrauma and chronic lung disease (CLD). Research indicates that early surfactant therapy and initiation of nasal continuous positive airway pressure (CPAP) for these infants significantly reduces the need for mechanical ventilation and the incidence of CLD. Different CPAP delivery systems exist, each with some practical and clinical advantages and disadvantages. Clinical trials indicate that optimal management of neonatal RDS could be improved by early surfactant treatment followed immediately by extubation and stabilization on CPAP. Evidence suggests a synergistic effect between early surfactant administration (within 2 h of birth) and rapid extubation to nasal CPAP with a significant reduction in the need for mechanical ventilation and its associated morbidities.
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Affiliation(s)
- K C Sekar
- Department of Pediatrics, Neonatal-Perinatal Medicine, Neonatal Intensive Care Unit, Infant Breathing Disorders Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.
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Outcome of very low birthweight infants after introducing a new standard regime with the early use of nasal CPAP. Eur J Pediatr 2008; 167:909-16. [PMID: 18172681 DOI: 10.1007/s00431-007-0646-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Accepted: 11/22/2007] [Indexed: 10/22/2022]
Abstract
In this paper, a retrospective study was performed to find out whether the introduction of early nasal continuous positive airway pressure (nCPAP) as a new standard regime of very low birthweight infants will lead to a decreasing tracheal intubation and ventilation rate, as well as to a lower incidence of bronchopulmonary dysplasia in a tertiary-level perinatal centre. Ninety-three infants (study group) with early nCPAP as the first respiratory support were compared to 63 infants (historical control group) born before the use of early nCPAP. No statistically significant differences were found in the baseline characteristics. The main results of the study include reduced intubation mainly in infants with a birthweight <1,000 g (study group): 58% vs. 81% (p < 0.05). The mean duration of ventilation was 248 h (control group) vs. 128 h (study group) (p < 0.001) and 437 h vs. 198 h in infants <1,000 g (p < 0.001). There was significantly reduced incidence of bronchopulmonary dysplasia from 55% to 18% for all surviving infants (p < 0.001), and for infants <1,000 g, it was 90% vs. 30% (p < 0.001). No significant differences for other outcome criteria were noted, but a significant reduction in the use of central i.v. lines, fluids, drugs, volume expansion, sedation, catecholamines, surfactant, steroids and buffer, as well as antibiotics, was observed (p < 0.05). Therefore, we can conclude that early nCPAP is an easy-to-use and safe procedure for very low birthweight infants to treat respiratory distress.
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Abstract
One of the most common and concerning complications seen in low-birth-weight infants is chronic lung disease. A variety of factors have been implicated in the etiology of chronic lung disease including lung inflammation and injury. Noninvasive ventilation (NIV), a term applied to a variety of devices capable of supporting neonatal ventilation without the use of an endotracheal tube, is receiving increasing attention as means to reduce damage often incurred with mechanical ventilation. This article will review the history of continuous positive pressure ventilation and will provide an overview of some of the other types of NIV being used in neonates. The literature supporting the use of NIV is reviewed, and nursing care of the infant receiving NIV is examined.
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Wintermark P, Tolsa JF, Van Melle G, Forcada-Guex M, Moessinger AC. Long-term outcome of preterm infants treated with nasal continuous positive airway pressure. Eur J Pediatr 2007; 166:473-83. [PMID: 17043844 DOI: 10.1007/s00431-006-0272-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2006] [Revised: 07/14/2006] [Accepted: 07/15/2006] [Indexed: 12/26/2022]
Abstract
This study's aim was to assess neurodevelopmental and growth outcome until the age of 4 years of premature infants placed on early nCPAP, in the setting of the neonatal intensive care unit (NICU) and follow-up program of the Division of Neonatology of the Department of Pediatrics of the University Hospital, Lausanne, Switzerland. All consecutive inborn infants weighing <1500 g or <32 weeks of gestational age admitted to the NICU during two periods of 12 months-7.1996-6.1997 and 7.1998-6.1999-were compared before and after the systematic application of early nCPAP. Of 172 infants admitted to the NICU, 150 (87%) survived. 126 (84%) were tested at 6 months' corrected age, 121 (81%) at 18 months' corrected age, and 117 (78%) at the age of 4 years. Detailed perinatal data were collected. Follow-up included neurological examination, developmental testing and measurement of growth parameters. Statistical analyses were performed. Early application of nCPAP and avoidance of mechanical ventilation showed no adverse effects on neurodevelopment and growth. A significantly higher developmental quotient was found in the nCPAP group at 18 months' corrected age. Several trends were also noted in the nCPAP group with a decrease of intraventricular hemorrhage and in "abnormal neurodevelopment" at 6 months corrected age, a bigger head circumference at all different tested ages and a greater height at 6 and 18 months corrected ages. In conclusion, our study of developmental outcome documents the absence of any harmful effect of early application of nCPAP to treat respiratory failure in very low birthweight infants.
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Affiliation(s)
- Pia Wintermark
- Developmental Unit, Division of Neonatology, Department of Pediatrics, University Hospital (CHUV) and Lausanne Medical School, 1011, Lausanne, Switzerland.
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Nold JL, Meyers PA, Worwa CT, Goertz RH, Huseby K, Schauer G, Mammel MC. Decreased lung injury after surfactant in piglets treated with continuous positive airway pressure or synchronized intermittent mandatory ventilation. Neonatology 2007; 92:19-25. [PMID: 17596733 DOI: 10.1159/000098444] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2006] [Accepted: 09/04/2006] [Indexed: 11/19/2022]
Abstract
BACKGROUND Treatment with surfactant (S) decreases lung injury in paralyzed, mechanically ventilated animals. The use of nasal continuous positive airway pressure (CPAP) as an alternative to mechanical ventilation may further improve acute pulmonary outcomes. OBJECTIVES To evaluate the effect of surfactant (+S, -S) and synchronized intermittent mandatory ventilation (SIMV) on lung morphology and inflammatory markers in 24 spontaneously breathing piglets treated with CPAP or SIMV after saline lavage-induced lung injury. METHODS After induction of lung injury, animals were randomized to CPAP-S, CPAP+S or SIMV+S and treated for 4 h. Physiologic parameters were continuously monitored. After treatment, animals were euthanized and lungs fixed. Bronchoalveolar lavage (BAL) samples were collected for neutrophil count and H(2)O(2). RESULTS No physiologic differences were noted. BAL fluid from CPAP-S animals contained more neutrophils and more neutrophil H(2)O(2) than fluid from the SIMV+S or CPAP+S groups (p < 0.05 or greater). Pathologic injury scores were higher in dependent lung regions from CPAP groups (p < 0.05). Injury pattern scores showed greater dependent alveolar inflammation in all (p < 0.02), with more dependent atelectasis in the CPAP groups (p < 0.01). Morphometrics showed less total open alveolar air space in nondependent regions of the SIMV+S group compared to CPAP groups (p < 0.001). Dependent regions showed less total open alveolar air space compared to nondependent regions in the CPAP groups (p < 0.001). CONCLUSIONS Animals treated with surfactant prior to CPAP or SIMV had less acute lung injury. SIMV+S animals had less open air space in nondependent regions. This suggests, during early ventilatory support, surfactant administration may modulate pulmonary inflammation. CPAP alone without surfactant may not provide optimal pulmonary protection. The addition of mechanical breaths may alter and add to injury.
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Affiliation(s)
- Joan L Nold
- Infant Pulmonary Research Center, Children's Hospitals and Clinics of Minnesota, St. Paul, MN 55102, USA
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De Felice C, Parrini S, Barducci A, Chitano G, Tonni G, Latini G. Abnormal oral mucosal light reflectance in bronchopulmonary dysplasia. Early Hum Dev 2006; 82:273-8. [PMID: 16338107 DOI: 10.1016/j.earlhumdev.2005.09.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2005] [Revised: 09/05/2005] [Accepted: 09/22/2005] [Indexed: 11/25/2022]
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) is an important cause of mortality and morbidity in preterm infants. A disordered vascular development and a decreased production of angiogenic factors have been recently reported in the condition. Extracellular matrix (ECM) is known to play an important role on angiogenesis and blood vessel geometry and changes in ECM components have been previously reported in experimental models and patients with BPD. Here, we aimed to assess the potential value of light reflectance on the oral mucosa in detecting infants who will develop BPD. METHODS A total of 75 preterm newborns (gestational age: 27.7 +/- 2.8 weeks, birth weight: 870 +/- 145 g) were recruited to the study, of whom 25 developed BPD (gestational age: 26.9 +/- 3.0 weeks, birth weight: 855 +/- 150 g). Reflectance was measured on the postnatal days 1 and 28, using high-resolution photographs of the lower gingival and vestibular oral mucosa, using imaging spectrophotometry in the 400-700 nm wavelength electromagnetic spectral range. The median of artefact- and vessel-free areas was n = 78 (interquartile range: 59-88). Median range values were comparable for both groups: BPD-positive infants, median 77 (interquartile: 60-90) vs. control infants, median 74 (interquartile: 62-92). The predictive accuracy of oral spectrophotometry was calculated using receiver operating characteristic curve analysis. RESULTS BPD patients showed significantly lower light reflectance values in the red (610-700 nm, P < 0.0001), with higher values in the violet (400 nm, P = 0.0056; 430 nm, P=0.014), and blue-green (480-500 nm, P < or = 0.024) sections of the spectrum already on the first day of life. A low reflectance value in the 640-700 nm wavelengths interval was found to identify BPD patients with 100% sensitivity and 100% specificity (640 nm: cutoff < or = 44.91%; 650 nm: < or = 45.64%; 660 nm: < or = 46.56%; 670 nm: < or = 47.14%; 680 nm: < or = 47.56%; 690 nm: < or = 48.95%; 700 nm: < or = 50.81%). CONCLUSIONS These findings indicate the presence of previously unrecognised, early abnormalities in the average optical properties of the oral mucosa from infants developing BPD.
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Affiliation(s)
- Claudio De Felice
- Neonatal Intensive Care Unit, Azienda Ospedaliera Universitaria Senese, Siena, Italy
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15
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Abstract
Despite the large body of information regarding the beneficial effects of continuous positive airway pressure (CPAP) in infants with respiratory distress syndrome (RDS) data are insufficient at this time to support or refute its use during neonatal resuscitation. An individualized approach to infants with respiratory distress is recommended.
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Affiliation(s)
- Louis P Halamek
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University, Palo Alto, CA 94305, USA.
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16
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De Felice C, Goldstein MR, Parrini S, Verrotti A, Criscuolo M, Latini G. Early dynamic changes in pulse oximetry signals in preterm newborns with histologic chorioamnionitis. Pediatr Crit Care Med 2006; 7:138-42. [PMID: 16474255 DOI: 10.1097/01.pcc.0000201002.50708.62] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE No reliable clinical markers of histologic chorioamnionitis (HCA), a major and often subclinical cause of prematurity leading to high neonatal morbidity and mortality, are available to date. Increasing evidence indicates myocardial dysfunctions in affected fetuses and newborns. We sought to assess the value of nonlinear dynamics from pulse oximetry signals in identifying affected newborns. DESIGN Prospective case-control study. SETTING Tertiary level neonatal intensive care unit, Brindisi Hospital. PATIENTS AND INTERVENTION Pulse oximetry-derived signals (pulse rate, oxygen saturation, and perfusion index), recorded within the first 1.5 hrs of life, were analyzed for 110 very low-birth-weight infants, of whom 54 had histopathological evidence of HCA. MEASUREMENTS AND MAIN RESULTS Four different time series parameters were determined for nonlinear dynamical (NLD) analysis. Significantly decreased Lempel-Ziv, Lyapunov largest exponent, and correlation dimension, with significantly increased Hurst values for heart rate and perfusion index (p < .00001), were observed in newborns with HCA. Heart rate Lempel-Ziv </=0.218 showed 100% sensitivity (95% confidence interval, 98.8-100) and 100% specificity (95% confidence interval, 98.6-100) in distinguishing cases from controls, with positive and negative predictive values of 100% and 95.7%, respectively. CONCLUSIONS Our findings indicate that early autonomic tone balance abnormalities are present in newborns with HCA and suggest that early dynamic analysis of pulse oximetry signals could be useful in identifying affected infants.
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Affiliation(s)
- Claudio De Felice
- Neonatal Intensive Care Unit, Azienda Ospedaliera Universitaria Senese, Policlinico Le Scotte, Siena, Italy
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17
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De Felice C, Del Vecchio A, Latini G. Evaluating illness severity for very low birth weight infants: CRIB or CRIB-II? J Matern Fetal Neonatal Med 2005; 17:257-60. [PMID: 16147834 DOI: 10.1080/14767050500072557] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
BACKGROUND Estimating the risk of in-hospital mortality provides essential information in the neonatal intensive care unit (NICU). The clinical risk index for babies (CRIB) is a widely used, risk-adjustment instrument to determine illness severity in infants of gestational age <or=31 wks, or birth weight <or=1,500 g, recently updated and simplified into a five-items scoring system (CRIB-II).Aim. The accuracy values of CRIB and CRIB-II scores in predicting in-hospital mortality were compared in a tertiary level, minimal intubation policy NICU setting. METHODS A total of 147 very low birth weight (VLBW) infants were examined. Both CRIB and CRIB-II scores were calculated for each newborn, and death before hospital discharge was selected as the outcome measure. Comparisons were performed by receiver-operating characteristic (ROC) curve analysis, and the area under the curve (AUC) was used as a measure of predictor accuracy. RESULTS Mean AUCs for CRIB, CRIB-II, gestational age and birth weight in identifying neonatal mortality in VLBW infants ranged from 0.924 (CRIB) to 0.869 (gestational age). No significant differences were found for the AUCs of CRIB versus CRIB-II, CRIB versus gestational age, CRIB versus birth weight, CRIB-II versus gestational age, or CRIB-II versus birth weight. CONCLUSIONS Our findings show that; 1) CRIB and CRIB-II show similar accuracy values in predicting in-hospital neonatal mortality in VLBW infants; and 2) neither score offers an advantage in predicting mortality, as compared to gestational age or birth weight, thus suggesting that treatment modalities may modify predictive accuracy.
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Affiliation(s)
- Claudio De Felice
- Neonatal Intensive Care Unit, Azienda Ospedaliera Universitaria Senese, Siena, Italy
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18
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de Felice C, Latini G, Parrini S, Bianciardi G, Toti P, Kopotic RJ, Null DM. Oral mucosal microvascular abnormalities: an early marker of bronchopulmonary dysplasia. Pediatr Res 2004; 56:927-31. [PMID: 15470198 DOI: 10.1203/01.pdr.0000145259.85418.1d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
An abnormal pulmonary vasculature has been reported as an important component of bronchopulmonary dysplasia (BPD). We tested the hypothesis of an early abnormal vascular network pattern in infants with BPD. Fifteen infants with BPD (nine boys and six girls; gestational age 27.5 +/- 2.0 wk; birth weight 850 +/- 125 g) and 15 sex- and gestational age-matched infants (nine boys and six girls; gestational age 27.6 +/- 2.6 wk; birth weight 865 +/- 135 g) were examined on postnatal days 1 and 28. BPD infants showed a significantly higher prevalence of histologic chorioamnionitis (p = 0.009), as well as higher intubation duration (p = 0.0004), oxygen supplementation (p < 0.0001), and initial illness severity (p = 0.0002) than the BPD-negative population. The lower gingival and vestibular oral mucosa was chosen as the study area. The blood vessel area was determined, and the oral vascular networks were characterized by analyzing their complexity (D, at two scales: D 1-46, D 1-15), tortuosity (Dmin), and randomness (L-Z) of the vascular loops. Infants with BPD showed a significantly lower blood vessel area as well as a higher vascular network complexity (D 1-46, D 1-15, and L-Z) than control subjects (p < 0.0001). Our findings provide a new early clinical sign in BPD and stress the importance of an early disorder in the oral mucosal vascularization process in the disease pathogenesis.
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Affiliation(s)
- Claudio de Felice
- Neonatal Intensive Care Unit, Azienda Ospedaliera Universitaria Senese, University of Siena, I-53100 Siena, Italy.
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20
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Abstract
PURPOSE OF REVIEW Continuous positive airway pressure is increasingly being used in the care of premature infants. The purpose of this review is to highlight the current controversies in the use of neonatal continuous positive airway pressure. RECENT FINDINGS This review explores information about the devices available for delivering continuous positive airway pressure and the pressures that can be used. It also investigates the controversial issues of using continuous positive airway pressure during resuscitation of premature infants and whether infants who are going to be managed on continuous positive airway pressure should be intubated and given surfactant before continuous positive airway pressure is started. It reviews the use of continuous positive airway pressure and the prevention of chronic lung disease and the use of nasal intermittent positive pressure ventilation and the difficult area of weaning from continuous positive airway pressure. SUMMARY Existing evidence suggests that short binasal prongs are most effective, nasal intermittent positive pressure ventilation is a useful way of augmenting neonatal continuous positive airway pressure and that very premature infants can be managed with neonatal continuous positive airway pressure in the delivery room as part of the resuscitation. Further research is required to determine whether important outcomes are improved with the use of nasal continuous positive airway pressure rather than endotracheal intubation and, if so, whether surfactant should be given to infants so managed. Definition of optimal levels of continuous positive airway pressure for infants at varying stages of their disease also requires further research.
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Affiliation(s)
- Colin Morley
- The Royal Women's Hospital, and the Murdoch Children's Research Institute, Melbourne, Australia.
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