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Naples R, Fenton AC, Brodlie M, Harigopal S, O'Brien C. Diaphragm electrical activity during weaning of nasal high-flow therapy in preterm infants. Arch Dis Child Fetal Neonatal Ed 2022; 108:237-243. [PMID: 36223982 DOI: 10.1136/archdischild-2022-324112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 09/29/2022] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To determine whether electrical activity of the diaphragm (Edi) changes with weaning nasal high-flow (HF) therapy in preterm infants according to a standardised protocol. DESIGN Prospective observational cohort study. SETTING Neonatal intensive care unit. PATIENTS Preterm infants born at <32 weeks gestation, receiving nasal HF as part of routine clinical care. INTERVENTIONS Infants recruited to the study had their HF weaned according to set clinical criteria. Edi was measured using a modified gastric feeding tube serially from baseline (pre-wean) to 24-hours post-wean. MAIN OUTCOME MEASURES Change in Edi from baseline was measured at four time points up to 24 hours after weaning. Minimum Edi during expiration, maximum Edi during inspiration and amplitude of the Edi signal (Edidelta) were measured. Clinical parameters (heart rate, respiratory rate and fraction of inspired oxygen) were also recorded. RESULTS Forty preterm infants were recruited at a mean corrected gestational age of 31.6 (±2.7) weeks. Data from 156 weaning steps were analysed, 91% of which were successful. Edi did not change significantly from baseline during flow reduction steps, but a significant increase in diaphragm activity was observed when discontinuing HF (median increase in Edidelta immediately post-discontinuation 1.7 µV (95% CI: 0.6 to 3.0)) and at 24 hours 1.9 µV (95% CI: 0.7 to 3.8)). No significant difference in diaphragm activity was observed between successful and unsuccessful weaning steps. CONCLUSIONS A protocolised approach to weaning has a high probability of success. Edi does not change with reducing HF rate, but significantly increases with discontinuation of HF from 2 L/min.
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Affiliation(s)
- Rebecca Naples
- Newcastle Neonatal Service, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK .,Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Alan C Fenton
- Newcastle Neonatal Service, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Malcolm Brodlie
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK.,Paediatric Respiratory Medicine, Great North Children's Hospital, Newcastle upon Tyne, UK
| | - Sundeep Harigopal
- Newcastle Neonatal Service, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Chris O'Brien
- Paediatric Respiratory Medicine, Great North Children's Hospital, Newcastle upon Tyne, UK
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Alibrahim O, Rehder KJ, Miller AG, Rotta AT. Mechanical Ventilation and Respiratory Support in the Pediatric Intensive Care Unit. Pediatr Clin North Am 2022; 69:587-605. [PMID: 35667763 DOI: 10.1016/j.pcl.2022.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Children admitted to the pediatric intensive care unit often require respiratory support for the treatment of respiratory distress and failure. Respiratory support comprises both noninvasive modalities (ie, heated humidified high-flow nasal cannula, continuous positive airway pressure, bilevel positive airway pressure, negative pressure ventilation) and invasive mechanical ventilation. In this article, we review the various essential elements and considerations involved in the planning and application of respiratory support in the treatment of the critically ill children.
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Affiliation(s)
- Omar Alibrahim
- Division of Pediatric Critical Care Medicine, Duke University Medical Center, Durham, NC, USA; Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Kyle J Rehder
- Division of Pediatric Critical Care Medicine, Duke University Medical Center, Durham, NC, USA; Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Andrew G Miller
- Respiratory Care Services, Duke University Medical Center, Durham, NC, USA
| | - Alexandre T Rotta
- Division of Pediatric Critical Care Medicine, Duke University Medical Center, Durham, NC, USA; Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA.
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3
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Modes and strategies for providing conventional mechanical ventilation in neonates. Pediatr Res 2021; 90:957-962. [PMID: 31785591 DOI: 10.1038/s41390-019-0704-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 09/06/2019] [Indexed: 11/08/2022]
Abstract
Neonatal respiratory failure is a common and serious clinical problem which in a considerable proportion of infants requires invasive mechanical ventilation. The basic goal of mechanical ventilation is to restore lung function while limiting ventilator-induced lung injury, which is considered an important risk factor in the development of bronchopulmonary dysplasia (BPD). Over the last decades, new conventional mechanical ventilation (CMV) modalities have been introduced in clinical practice, aiming to assist clinicians in providing lung protective ventilation strategies. These modalities use more sophisticated techniques to improve patient-ventilator interaction and transfer control of ventilation from the operator to the patient. Knowledge on how these new modalities work and how they interact with lung physiology is essential for optimal and safe use. In this review, we will discuss some important basic lung physiological aspects for applying CMV, the basic principles of the old and new CMV modalities, and the evidence to support their use in daily clinical practice.
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Proportional assist ventilation (PAV) versus neurally adjusted ventilator assist (NAVA): effect on oxygenation in infants with evolving or established bronchopulmonary dysplasia. Eur J Pediatr 2020; 179:901-908. [PMID: 31980954 PMCID: PMC7220976 DOI: 10.1007/s00431-020-03584-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/13/2020] [Accepted: 01/15/2020] [Indexed: 11/11/2022]
Abstract
Both proportional assist ventilation (PAV) and neurally adjusted ventilatory assist (NAVA) provide pressure support synchronised throughout the respiratory cycle proportional to the patient's respiratory demand. Our aim was to compare the effect of these two modes on oxygenation in infants with evolving or established bronchopulmonary dysplasia. Two-hour periods of PAV and NAVA were delivered in random order to 18 infants born less than 32 weeks of gestation. Quasi oxygenation indices ("OI") and alveolar-arterial ("A-a") oxygen gradients at the end of each period on PAV, NAVA and baseline ventilation were calculated using capillary blood samples. The mean "OI" was not significantly different on PAV compared to NAVA (7.8 (standard deviation (SD) 3.2) versus 8.1 (SD 3.4), respectively, p = 0.70, but lower on both than on baseline ventilation (mean baseline "OI" 11.0 (SD 5.0)), p = 0.002, 0.004, respectively). The "A-a" oxygen gradient was higher on PAV and baseline ventilation than on NAVA (20.8 (SD 12.3) and 22.9 (SD 11.8) versus 18.5 (SD 10.8) kPa, p = 0.015, < 0.001, respectively).Conclusion: Both NAVA and PAV improved oxygenation compared to conventional ventilation. There was no significant difference in the mean "OI" between the two modes, but the mean "A-a" gradient was better on NAVA.What is Known:• Proportional assist ventilation (PAV) and neurally adjusted ventilatory assist (NAVA) can improve the oxygenation index (OI) in prematurely born infants.• Both PAV and NAVA can provide support proportional to respiratory drive or demand throughout the respiratory cycle.What is New:• In infants with evolving or established BPD, using capillary blood samples, both PAV and NAVA compared to baseline ventilation resulted in improvement in the "OI", but there was no significant difference in the "OI" on PAV compared to NAVA.• The "alveolar-arterial" oxygen gradient was better on NAVA compared to PAV.
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5
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Yagui ACZ, Gonçalves PA, Murakami SH, Santos AZ, Zacharias RSB, Rebello CM. Is noninvasive neurally adjusted ventilatory assistance (NIV-NAVA) an alternative to NCPAP in preventing extubation failure in preterm infants? J Matern Fetal Neonatal Med 2019; 34:3756-3760. [PMID: 31762348 DOI: 10.1080/14767058.2019.1697669] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Background: Prolonged use of mechanical ventilation is associated with some complications as high mortality and high morbidities as bronchopulmonary dysplasia, ventilator-associated pneumonia, and pneumothorax. However, extubation failure in preterm infants is still high (40-60%) in very low birth weight infants (VLBW). Noninvasive neurally adjusted ventilatory assistance (NIV-NAVA) is triggered by the diaphragmatic electrical activity through a nasogastric tube that synchronizes patient/ventilator respiration, cycle by cycle effectively shortening the assisted cycle trigger and the degree of ventilatory assistance, optimizing the effects of intermittent inspiratory pressure on nasal continuous positive airway pressure (NCPAP). This study aims to compare reintubation rates until 72 h after extubation in preterm infants of high risk for reintubation using NIV-NAVA or NCPAP. Methods: A retrospective study of chart review data collection was performed in a private tertiary hospital. The study was approved by the local institutional Ethics Committee. We included infants considered at high risk of reintubation (BW < 1000 grams; use of invasive mechanical ventilation (IMV) for at least 7 days; or previous extubation failure episode) and compared the two groups according to the type of respiratory support after extubation: 1) NCPAP (n = 32); or 2) NIV-NAVA (n = 17). Demographics data were collected, the primary outcome was reintubation rate until 72 h after extubation. Secondary outcome was time to reintubation, BPD rate, IVH grade ≥ III, pneumothorax and death. Results: There was no difference between both groups in demographic data. The reintubation rate decreased significantly in the NIV-NAVA group compared to NCPAP (50.0-11.7, p < 0.02) despite the significantly higher length of invasive mechanical ventilation (IMV) before extubation attempt in NIV-NAVA group (12.4 versus 5.5 days, p < 0.04). There was no difference between both groups in secondary outcomes. Conclusions: In this small retrospective cohort study, the use of NIV-NAVA as postextubation strategy was effective in reducing extubation failure within 72 hours in preterm infants when compared to traditional NCPAP.
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Affiliation(s)
- Ana C Z Yagui
- Hospital Israelita Albert Einstein , São Paulo, Brazil
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6
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Yagui AC, Meneses J, Zólio BA, Brito GMG, da Silva RJ, Rebello CM. Nasal continuous positive airway pressure (NCPAP) or noninvasive neurally adjusted ventilatory assist (NIV-NAVA) for preterm infants with respiratory distress after birth: A randomized controlled trial. Pediatr Pulmonol 2019; 54:1704-1711. [PMID: 31393072 DOI: 10.1002/ppul.24466] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 07/12/2019] [Indexed: 11/09/2022]
Abstract
OBJECTIVES To compare rates of treatment failure between the use of nasal continuous positive airway pressure (NCPAP) and noninvasive neurally adjusted ventilatory assist (NIV-NAVA) in infants with respiratory distress after birth. METHODS A randomized, unblinded, double-center trial was conducted in infants with birth weights (BWs) less than or equal to 1500 g and respiratory distress receiving noninvasive respiratory support for less than or equal to 48 hours of life; some infants were initially treated with minimally invasive surfactant therapy as the standard of care. PRIMARY OUTCOME need for endotracheal intubation with use of mechanical ventilation (MV) at less than or equal to 72 hours of life using prespecified failure criteria. SECONDARY OUTCOMES use of surfactant, duration of noninvasive support, duration of MV, bronchopulmonary dysplasia (BPD) and death. RESULTS A total of 123 infants were included (NCPAP group = 64 and NIV-NAVA group = 59). Population characteristics were similar between groups. No difference in the primary outcome was observed: NCPAP = 10 (15.6%) and NIV-NAVA = 12 (20.3%), P = .65. Groups were also similar in the use of surfactant (19 vs 17), duration of noninvasive support (147 ± 181 hours vs 127 ± 137 hours), BPD incidence and death. However, duration of MV was significantly longer in NCPAP group (95.6 ± 45.8 hours vs 28.25 ± 34.1 hour), P = .01. CONCLUSION In infants with respiratory distress after birth, no differences in treatment failures were observed between NIV-NAVA and NCPAP. These results require further evaluation in a larger study.
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Affiliation(s)
- Ana C Yagui
- Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Jucille Meneses
- Instituto de Medicina Integral Prof. Fernandes Figueira, Recife, Brazil
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7
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Nam SK, Lee J, Jun YH. Neural feedback is insufficient in preterm infants during neurally adjusted ventilatory assist. Pediatr Pulmonol 2019; 54:1277-1283. [PMID: 31077579 DOI: 10.1002/ppul.24352] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 04/02/2019] [Accepted: 04/17/2019] [Indexed: 11/08/2022]
Abstract
OBJECTIVES To investigate the effects of changing assistance levels on respiratory patterns, including peak inspiratory pressure (PIP), overassistance, work of breathing, and discomfort in preterm infants during neurally adjusted ventilatory assist (NAVA). WORKING HYPOTHESIS Once the lungs reach optimal inflation, negative feedback suppresses neural respiratory drive and therefore, the electrical activity of the diaphragm (Edi) such that the lungs are protected from overinflation and breathing work is reduced. STUDY DESIGN A prospective study was conducted in 14 preterm infants (median postconceptional age of 32.1 weeks) who received at least 24 hours of ventilatory support for respiratory distress. METHODOLOGY Increasing and decreasing NAVA levels (from 0.5 to 4.0 cmH2 O/µV with an interval of 0.5 cmH 2 O/µV) were applied for 10 minutes each. Data recorded for the last 5 minutes of each NAVA level were analyzed. Heart rate and oxygen saturation were recorded and premature infant pain profiles were calculated. RESULTS An inflection point for PIP was not evident during increasing and decreasing assistance. Increasing NAVA levels caused greater variability in PIP and a higher proportion of the excessive tidal volume of more than 10 mL/kg. Peak Edi and discomfort scale decreased shortly after a small change in NAVA levels during increasing assistance. However, during decreasing assistance, peak Edi and discomfort scale remained low until a large reduction in NAVA levels. CONCLUSION Although NAVA can effectively alleviate the respiratory muscle work and discomfort, the neural feedback for protection from lung overinflation seems to be insufficient in preterm infants.
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Affiliation(s)
- Soo Kyung Nam
- Department of Pediatrics, Inha University Hospital, Incheon, Korea
| | - Juyoung Lee
- Department of Pediatrics, Inha University Hospital, Incheon, Korea.,Department of Pediatrics, Inha University College of Medicine, Incheon, Korea
| | - Yong Hoon Jun
- Department of Pediatrics, Inha University Hospital, Incheon, Korea.,Department of Pediatrics, Inha University College of Medicine, Incheon, Korea
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8
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Kraaijenga JV, de Waal CG, Hutten GJ, de Jongh FH, van Kaam AH. Diaphragmatic activity during weaning from respiratory support in preterm infants. Arch Dis Child Fetal Neonatal Ed 2017; 102:F307-F311. [PMID: 27799323 DOI: 10.1136/archdischild-2016-311440] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 09/28/2016] [Accepted: 10/07/2016] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To determine if weaning from nasal continuous positive airway pressure (nCPAP) to lesser supportive low flow nasal cannula (LFNC) results in a change in electrical activity of the diaphragm in preterm infants. DESIGN Prospective observational study. SETTING Neonatal intensive care unit. PATIENTS Stable preterm infants weaned from nCPAP to LFNC (1 L/min). MAIN OUTCOME MEASURES Change in diaphragmatic activity, expressed as amplitude, peak and tonic activity, measured by transcutaneous electromyography (dEMG) from 30 min before (baseline) until 180 min after weaning. Subgroup analysis was performed based on success or failure of the weaning attempt. RESULTS Fifty-nine preterm infants (gestational age: 29.0±2.4 weeks, birth weight: 1210±443 g) accounting for 74 weaning attempts were included. A significant increase in dEMG amplitude (median, IQR: 21.3%, 3.6-41.4), peak (22.1%, 8.7-40.5) and tonic activity (14.3%, -1.9-38.1) was seen directly after weaning. This effect slowly decreased over time. Infants failing the weaning attempt tended to have a higher diaphragmatic activity than those successfully weaned. CONCLUSIONS Weaning from nCPAP to LFNC leads to an increase in diaphragmatic activity measured by dEMG and is most prominent in preterm infants failing the weaning attempt. dEMG monitoring might be a useful parameter to guide weaning from respiratory support in preterm infants.
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Affiliation(s)
- Juliette V Kraaijenga
- Department of Neonatology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Cornelia G de Waal
- Department of Neonatology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Gerard J Hutten
- Department of Neonatology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Frans H de Jongh
- Department of Neonatology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Anton H van Kaam
- Department of Neonatology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
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Reiterer F, Schwaberger B, Freidl T, Schmölzer G, Pichler G, Urlesberger B. Lung-protective ventilatory strategies in intubated preterm neonates with RDS. Paediatr Respir Rev 2017; 23:89-96. [PMID: 27876355 DOI: 10.1016/j.prrv.2016.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 10/20/2016] [Indexed: 11/16/2022]
Abstract
This article provides a narrative review of lung-protective ventilatory strategies (LPVS) in intubated preterm infants with RDS. A description of strategies is followed by results on short-and long-term respiratory and neurodevelopmental outcomes. Strategies will include patient-triggered or synchronized ventilation, volume targeted ventilation, the technique of intubation, surfactant administration and rapid extubation to NCPAP (INSURE), the open lung concept, strategies of high-frequency ventilation, and permissive hypercapnia. Based on this review single recommendations on optimal LPVS cannot be made. Combinations of several strategies, individually applied, most probably minimize or avoid potential serious respiratory and cerebral complications like bronchopulmonary dysplasia and cerebral palsy.
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Affiliation(s)
- F Reiterer
- Division of Neonatology, Department of Pediatrics and Adolescence Medicine, Medical University Graz, Austria.
| | - B Schwaberger
- Division of Neonatology, Department of Pediatrics and Adolescence Medicine, Medical University Graz, Austria
| | - T Freidl
- Division of Neonatology, Department of Pediatrics and Adolescence Medicine, Medical University Graz, Austria
| | - G Schmölzer
- Centre for the Studies of Asphyxia and Resuscitation, Neonatal Research Unit, Royal Alexandra Hospital, Edmonton, Canada; Department of Pediatrics, University of Alberta, Edmonton, Canada
| | - G Pichler
- Division of Neonatology, Department of Pediatrics and Adolescence Medicine, Medical University Graz, Austria
| | - B Urlesberger
- Division of Neonatology, Department of Pediatrics and Adolescence Medicine, Medical University Graz, Austria
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De Cunto A, Paviotti G, Bua J, Demarini S. Theophylline increases diaphragmatic contractility in mechanically ventilated newborns. J Crit Care 2016; 37:264-265. [PMID: 28340998 DOI: 10.1016/j.jcrc.2016.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 10/05/2016] [Indexed: 10/20/2022]
Affiliation(s)
- Angela De Cunto
- Division of Neonatology, Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", Trieste, Italy.
| | - Giulia Paviotti
- Division of Neonatology, Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", Trieste, Italy
| | - Jenny Bua
- Division of Neonatology, Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", Trieste, Italy
| | - Sergio Demarini
- Division of Neonatology, Institute for Maternal and Child Health, IRCCS "Burlo Garofolo", Trieste, Italy
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Parikka V, Beck J, Zhai Q, Leppäsalo J, Lehtonen L, Soukka H. The effect of caffeine citrate on neural breathing pattern in preterm infants. Early Hum Dev 2015. [PMID: 26217936 DOI: 10.1016/j.earlhumdev.2015.06.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Caffeine citrate is widely used to prevent and treat prematurity-associated apnea. AIMS The aim of this study was to characterize the effect of caffeine citrate on the neural control of breathing, especially central apnea, in premature infants. STUDY DESIGN Preterm infants were evaluated for 30min before and 30min after caffeine citrate loading (20mg/kg). A feeding tube including miniaturized sensors was used to measure the diaphragm electrical activity (Edi) waveform. Central apnea was defined as any period where the Edi waveform was flat for >5s. SUBJECTS Seventeen preterm infants with a mean age of three days and mean birth weight of 900 grams were evaluated. OUTCOME MEASURES In addition to central apnea, several parameters including neural inspiratory time, neural respiratory rate, peak Edi, delta inspiratory change in Edi (phasic Edi) and minimum Edi on exhalation were measured. RESULTS The majority of the apnea were short (5 to 10s) and the number of apnea correlated with birth weight (p=0.039). Caffeine citrate reduced significantly the number of 5-to-10-second-long central apnea during the 30-minute periods (12±11 to 7±7; p=0.02). Caffeine citrate increased both peak and phasic Edi leading to a significant increase in the diaphragm energy expenditure. CONCLUSIONS Edi signal can be reliably measured and processed to study changes in premature infants' neural breathing. The beneficial effect of caffeine citrate on the reduction of the number of apnea is mediated through stimulated neural breathing increasing the diaphragm energy expenditure.
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Affiliation(s)
- Vilhelmiina Parikka
- Department of Pediatrics, Turku University Hospital, University of Turku, Turku, Finland.
| | - Jennifer Beck
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada; Department of Critical Care, St. Michael's Hospital, Toronto, Canada; Department of Pediatrics, University of Toronto, Toronto, Canada
| | - Qian Zhai
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada
| | - Juha Leppäsalo
- Department of Pediatrics, Turku University Hospital, University of Turku, Turku, Finland
| | - Liisa Lehtonen
- Department of Pediatrics, Turku University Hospital, University of Turku, Turku, Finland
| | - Hanna Soukka
- Department of Pediatrics, Turku University Hospital, University of Turku, Turku, Finland
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Kraaijenga JV, Hutten GJ, de Jongh FH, van Kaam AH. Transcutaneous electromyography of the diaphragm: A cardio-respiratory monitor for preterm infants. Pediatr Pulmonol 2015; 50:889-95. [PMID: 25327880 DOI: 10.1002/ppul.23116] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 08/24/2014] [Indexed: 11/10/2022]
Abstract
INTRODUCTION Chest impedance (CI) is the current standard for cardio-respiratory monitoring in preterm infants but fails to provide direct and quantitative information on diaphragmatic activity. Transcutaneous electromyography (dEMG) is able to measure diaphragmatic activity, but its feasibility and repeatability to monitor respiratory rate (RR) and heart rate (HR) in preterm infants needs to be established. METHODS RR and HR were measured simultaneously by dEMG and CI for 1-hour on day 1, 3, and 7 of life in 31 preterm infants (gestational age 29.6 ± 1.8 weeks; birth weight 1380 ± 350 g) on non-invasive respiratory support. Six fixed 1-minute time intervals were selected from each 1-hour recording and both RR and HR were calculated using all intervals or only those with stable dEMG and CI recordings. RESULTS dEMG was well tolerated and signal quality was good. Both RR and HR measured by dEMG and CI were significantly correlated (RR: r = 0.85, HR: r = 0.98) and showed good agreement by the Bland-Altman plot (mean difference (limits of agreement): RR: -2.3 (-17.3 to 12.7) breaths/min and HR: -0.3 (-5.3 to 4.7) beats/min. When analyzing only stable recordings, the correlation (r = 0.92) and agreement (-1.8 (-12.3 to 8.7) breaths/min) for RR improved. Subgroup analyses for postnatal age, gestational age, and mode of support showed similar results suggesting good repeatability of dEMG. CONCLUSION This study shows that monitoring RR and HR with transcutaneous dEMG is feasible and repeatable in preterm infants.
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Affiliation(s)
- Juliette V Kraaijenga
- Department of Neonatology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Gerard J Hutten
- Department of Neonatology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Frans H de Jongh
- Department of Neonatology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - Anton H van Kaam
- Department of Neonatology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
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Arca MJ, Uhing M, Wakeham M. Current concepts in acute respiratory support for neonates and children. Semin Pediatr Surg 2015; 24:2-7. [PMID: 25639802 DOI: 10.1053/j.sempedsurg.2014.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Current trends in mechanical respiratory support are evolving toward gentle approaches to avoid short- and long-term problems that are historically associated with mechanical ventilation. These ventilator-associated issues include the need for long-term sedation, muscle deconditioning, ventilator-associated lung injury (VALI), and ventilator-associated pneumonia (VAP). This article will describe recent trends of ventilatory support in neonates and children: (1) utilization of volume ventilation in infants, (2) synchrony and improving patient-ventilator interaction specifically using neurally adjusted ventilatory assist (NAVA), and (3) use of noninvasive ventilation techniques. When applicable, their uses in the surgical newborn and pediatric patients are described.
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Affiliation(s)
- Marjorie J Arca
- Division of Pediatric Surgery, Department of Surgery, Children׳s Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, Wisconsin; Division of Critical Care, Department of Pediatrics, Children׳s Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, Wisconsin.
| | - Michael Uhing
- Division of Neonatology, Department of Pediatrics, Children׳s Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Martin Wakeham
- Division of Critical Care, Department of Pediatrics, Children׳s Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, Wisconsin
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Shankar-Aguilera S, Taveira M, De Luca D. Neonatal ventilation trials need specific funding. THE LANCET RESPIRATORY MEDICINE 2014; 2:867-869. [PMID: 25439565 DOI: 10.1016/s2213-2600(14)70194-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shivani Shankar-Aguilera
- Division of Pediatrics and Neonatal Critical Care, FAME Department, South Paris University Hospitals, Medical Centre 'A. Beclere'- APHP, 92140 Clamart, Paris, France
| | - Melanie Taveira
- Division of Pediatrics and Neonatal Critical Care, FAME Department, South Paris University Hospitals, Medical Centre 'A. Beclere'- APHP, 92140 Clamart, Paris, France
| | - Daniele De Luca
- Division of Pediatrics and Neonatal Critical Care, FAME Department, South Paris University Hospitals, Medical Centre 'A. Beclere'- APHP, 92140 Clamart, Paris, France; Institute of Anesthesiology and Critical Care, Catholic University of the Sacred Heart, Rome, Italy.
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Iyer NP, Mhanna MJ. The role of surfactant and non-invasive mechanical ventilation in early management of respiratory distress syndrome in premature infants. World J Pediatr 2014; 10:204-10. [PMID: 25124970 DOI: 10.1007/s12519-014-0494-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 03/26/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Surfactant replacement therapy has been used for few decades for the treatment of respiratory distress syndrome (RDS) and has significantly improved morbidity and mortality in premature infants. Non-invasive respiratory support has recently emerged as a strategy in the early management of RDS. In this review, we discuss the different strategies of early management of RDS. DATA SOURCES A literature search of PubMed database was conducted to review the subject. The quality of evidence of key clinical studies was graded according to a modified grading system of the international GRADE group. RESULTS Continuous positive airway pressure (CPAP) with selective surfactant is a safe alternative to routine intubation, surfactant and mechanical ventilation in preterm infants with spontaneous breathing, and such an approach has been associated with decreased risk of death and bronchopulmonary dysplasia. There is a risk of pneumothorax when using a high pressure of CPAP (≥8 cm of H2O), a high partial pressure of carbon dioxide (PCO2 >75 mm of Hg), and a high fraction of inspired oxygen (FiO2 >0.6) as a threshold for intubation while on CPAP. CONCLUSION Not all preterm infants need surfactant treatment, and non-invasive respiratory support is a safe and effective approach.
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Affiliation(s)
- Narayan Prabhu Iyer
- Department of Pediatrics, Division of Neonatology, Case Western Reserve University School of Medicine, MetroHealth Medical Center, Cleveland, Ohio, 44109, USA
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Neumann RP, von Ungern-Sternberg BS. The neonatal lung--physiology and ventilation. Paediatr Anaesth 2014; 24:10-21. [PMID: 24152199 DOI: 10.1111/pan.12280] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/18/2013] [Indexed: 12/22/2022]
Abstract
This review article focuses on neonatal respiratory physiology, mechanical ventilation of the neonate and changes induced by anesthesia and surgery. Optimal ventilation techniques for preterm and term neonates are discussed. In summary, neonates are at high risk for respiratory complications during anesthesia, which can be explained by their characteristic respiratory physiology. Especially the delicate balance between closing volume and functional residual capacity can be easily disturbed by anesthetic and surgical interventions resulting in respiratory deterioration. Ventilatory strategies should ideally include application of an 'open lung strategy' as well avoidance of inappropriately high VT and excessive oxygen administration. In critically ill and unstable neonates, for example, extremely low-birthweight infants surgery in the neonatal intensive care unit might be an appropriate alternative to the operating theater. Best respiratory management of neonates during anesthesia is a team effort that should involve a joint multidisciplinary approach of anesthetists, pediatric surgeons, cardiologists, and neonatologists to reduce complications and optimize outcomes in this vulnerable population.
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Affiliation(s)
- Roland P Neumann
- Department of Neonatal Intensive Care, Basel University Children's Hospital (UKBB), Basel, Switzerland
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