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Tomé MR, Orlandin EADS, Zinher MT, Dias SO, Gonçalves-Ferri WA, De Luca D, Iwashita-Lages T. NIV-NAVA versus non-invasive respiratory support in preterm neonates: a meta-analysis of randomized controlled trials. J Perinatol 2024; 44:1276-1284. [PMID: 38553605 DOI: 10.1038/s41372-024-01947-x] [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] [Received: 10/25/2023] [Revised: 03/13/2024] [Accepted: 03/19/2024] [Indexed: 09/08/2024]
Abstract
OBJECTIVE To analyze the clinical and physiological outcomes of NIV-NAVA in preterm infants compared with other non-invasive respiratory support. STUDY DESIGN We conducted a meta-analysis of RCTs and randomized crossover studies comparing NIV-NAVA to other non-invasive strategies in preterm neonates. RESULTS NIV-NAVA was superior to other non-invasive support in maximum EAdi (MD - 0.66 µV; 95% CI - 1.17 to -0.15; p = 0.01), asynchrony index (MD - 49.8%; 95% CI - 63.1 to -36.5; p < 0.01), and peak inspiratory pressure (MD - 2.2 cmH2O; 95% CI - 2.7 to -1.7; p < 0.01). However, there were no significant differences in the incidences of intubation (RR 0.91; 95% CI 0.56-1.48; p = 0.71), reintubation (RR 0.72; 95% CI 0.45-1.16; p = 0.18), or bronchopulmonary dysplasia (RR 0.77; 95% CI 0.37-1.60; p = 0.48). CONCLUSION NIV-NAVA was associated with improvements in maximum Edi, asynchrony index, and peak inspiratory pressure relative to other non-invasive respiratory strategies, without significant differences in clinical outcomes between groups.
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Affiliation(s)
- Milena R Tomé
- Federal University of Campina Grande Faculty of Medicine, Campina Grande, Brazil.
| | | | | | - Sofia O Dias
- Faculdade De Ciências Médicas de São josé dos Campos, São josé dos Campos, Brazil
| | | | - Daniele De Luca
- Division of Paediatrics and Neonatal Critical Care, South "A.Beclere" Medical Center, Paris, France
| | - Thaís Iwashita-Lages
- Division of Neonatal Critical Care, University of São Paulo, Ribeirão Preto, Brazil.
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2
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Mocellin A, Guidotti F, Rizzato S, Tacconi M, Bruzzi G, Messina J, Puggioni D, Patsoura A, Fantini R, Tabbì L, Castaniere I, Marchioni A, Clini E, Tonelli R. Monitoring and modulation of respiratory drive in patients with acute hypoxemic respiratory failure in spontaneous breathing. Intern Emerg Med 2024:10.1007/s11739-024-03715-3. [PMID: 39207721 DOI: 10.1007/s11739-024-03715-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Accepted: 07/10/2024] [Indexed: 09/04/2024]
Abstract
Non-invasive respiratory support, namely, non-invasive ventilation, continuous positive airway pressure, and high-flow nasal cannula, has been increasingly used worldwide to treat acute hypoxemic respiratory failure, giving the benefits of keeping spontaneous breathing preserved. In this scenario, monitoring and controlling respiratory drive could be helpful to avoid patient self-inflicted lung injury and promptly identify those patients that require an upgrade to invasive mechanical ventilation. In this review, we first describe the physiological components affecting respiratory drive to outline the risks associated with its hyperactivation. Further, we analyze and compare the leading strategies implemented for respiratory drive monitoring and discuss the sedative drugs and the non-pharmacological approaches used to modulate respiratory drive during non-invasive respiratory support. Refining the available techniques and rethinking our therapeutic and monitoring targets can help critical care physicians develop a personalized and minimally invasive approach.
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Affiliation(s)
- Anna Mocellin
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
| | - Federico Guidotti
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
| | - Simone Rizzato
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
| | - Matteo Tacconi
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
| | - Giulia Bruzzi
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
| | - Jacopo Messina
- Internal Medicine Unit, University of Rome, Roma 1, Rome, Italy
| | - Daniele Puggioni
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
| | - Athina Patsoura
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
| | - Riccardo Fantini
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
| | - Luca Tabbì
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
| | - Ivana Castaniere
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
| | - Alessandro Marchioni
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy.
| | - Enrico Clini
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
| | - Roberto Tonelli
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena Reggio Emilia, Modena, Italy
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3
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Lefevere J, van Delft B, Decaluwe W, Derriks F, Cools F. Neurally adjusted ventilatory assist in preterm infants: A systematic review and meta-analysis. Pediatr Pulmonol 2024; 59:1862-1870. [PMID: 38568097 DOI: 10.1002/ppul.27001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/22/2024] [Accepted: 03/23/2024] [Indexed: 07/22/2024]
Abstract
To compare the effects of neurally adjusted ventilatory assist (NAVA) with other forms of synchronized artificial ventilation in preterm infants. A systematic review of randomized and quasi-randomized controlled trials with individual group allocation, both parallel-group trials as well as crossover trials, that included preterm infants born at less than 37 weeks gestational age and compared NAVA with any other form of synchronized mechanical ventilation with or without volume guarantee. Primary outcomes were death or bronchopulmonary dysplasia (BPD) at 36 weeks, total duration of respiratory support and neurodevelopmental outcome at 2 years. Secondary outcomes consisted of important procedural and clinical outcomes. Seven studies with a total of 191 infants were included, five randomized crossover trials and two parallel group randomized trials. No significant difference in the primary outcome of death or BPD (RR: 1.08, 95% CI: 0.33-3.55) was found. Peak inspiratory pressures were significantly lower with NAVA than with other forms of ventilation (MD -1.83 cmH2O [95% CI: -2.95 to -0.71]). No difference in any other clinical or ventilatory outcome was detected. Although associated with lower peak inspiratory pressures, the use of NAVA does not result in a reduced risk of death or BPD as compared to other forms of synchronized ventilation in preterm infants. However, the certainty of evidence is low due to imprecision of the effect estimate. Larger studies are needed to detect possible short- and long-term differences between ventilation modes.
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Affiliation(s)
| | | | - Wim Decaluwe
- Department of Neonatology, AZ Sint-Jan, Brugge, Belgium
| | - Frank Derriks
- Department of Neonatology, UZ Brussel, Jette, Belgium
- Department of Neonatology, Clinique universitaires de Bruxelles, Hôpital Erasme, Bruxelles, Belgium
| | - Filip Cools
- Department of Neonatology, UZ Brussel, Jette, Belgium
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4
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Kato Y, Hirata K, Takemoto A, Oumi C, Hisaichi T, Shimaji Y, Momochi M, Wada K. Skin-to-Skin Contact and Diaphragm Electrical Activity in Preterm Infants During Noninvasive Pressure Control. Adv Neonatal Care 2024; 24:285-290. [PMID: 38241690 DOI: 10.1097/anc.0000000000001141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2024]
Abstract
BACKGROUND Skin-to-skin contact (SSC) is widely implemented in the neonatal intensive care unit (NICU) due to its established role in reducing mortality and morbidity. However, the impact of SSC on diaphragmatic electrical activity (Edi) in premature infants undergoing noninvasive pressure control (NIV-PC) for respiratory management remains insufficiently explored. PURPOSE To assess the effects of SSC on Edi and vital signs in preterm infants managed with NIV-PC. METHODS A prospective, observational, crossover study was conducted, involving preterm infants admitted to a level III NICU between May 2020 and August 2021, who were receiving respiratory support with NIV-PC. Data were collected at 3 distinct time points: before SSC (pre-SSC period), during SSC (SSC period), and after SSC (post-SSC period). Thirty-minute periods of stable data were extracted for analysis. RESULTS A total of 21 SSC sessions were performed on 14 preterm infants, with a median age at the initiation of SSC of 62 days. The median (interquartile range) Edi peak (in microvolts) before, during, and after SSC was 7.1 (5.8-10.8), 6.8 (4.3-8.8), and 7.1 (5.5-8.8), respectively. No statistically significant differences were observed in Edi peak or minimum values during SSC, when compared with the periods before and after the SSC procedure. Likewise, no significant changes were noted in respiratory rate, oxygen saturation, heart rate, or the incidence of apnea. IMPLICATIONS FOR PRACTICE AND RESEARCH SSC in preterm infants undergoing NIV-PC does not exacerbate their clinical condition. Further investigations involving diverse patient cohorts are warranted.
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Affiliation(s)
- Yuta Kato
- Departments of Neonatal Medicine, Osaka Women's and Children's Hospital, Izumi, Osaka, Japan
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Lin HZ, Lin YF, Zheng YR. Comparison of neurally adjusted ventilatory assist and synchronized intermittent mandatory ventilation in preterm infants after patent ductus arteriosus ligation: a retrospective study. BMC Pediatr 2024; 24:277. [PMID: 38678190 PMCID: PMC11055325 DOI: 10.1186/s12887-024-04727-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 03/27/2024] [Indexed: 04/29/2024] Open
Abstract
OBJECTIVE This study aimed to compare the efficacy of neurally adjusted ventilatory assist (NAVA) to synchronized intermittent mandatory ventilation (SIMV) in preterm infants requiring mechanical ventilation after patent ductus arteriosus (PDA) ligation. METHODS A retrospective analysis was conducted on intubated preterm infants who underwent PDA ligation at our hospital from July 2021 to January 2023. Infants were divided into NAVA or SIMV groups based on the ventilation mode after surgery. RESULTS Fifty preterm infants were included. During treatment, peak inspiratory pressure (PIP) and mean airway pressure (MAP) were lower with NAVA compared to SIMV (PIP: 19.1 ± 2.9 vs. 22.4 ± 3.6 cmH2O, P < 0.001; MAP: 9.1 ± 1.8 vs. 10.9 ± 2.7 cmH2O, P = 0.002). PaO2 and PaO2/FiO2 were higher with NAVA (PaO2: 94.0 ± 11.7 vs. 84.8 ± 15.8 mmHg, P = 0.031; PaO2/FiO2: 267 [220-322] vs. 232 [186-290] mmHg, P = 0.025). Less sedation was required with NAVA (midazolam: 1.5 ± 0.5 vs. 1.1 ± 0.3 μg/kg/min, P < 0.001). CONCLUSION Compared to SIMV, early use of NAVA post PDA ligation in preterm infants was associated with decreased PIP and MAP. Early NAVA was also associated with reduced sedation needs and improved oxygenation. However, further studies are warranted to quantify the benefits of NAVA ventilation.
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Affiliation(s)
- Hui-Zi Lin
- Department of Neonatology, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Children's Hospital (Fujian Branch of Shanghai Children's Medical Center), Fuzhou, China
- Department of Neonatology, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China
- Fujian Key Laboratory of Women and Children's Critical Diseases Research, Fujian Women and Children's Hospital, Fuzhou, China
| | - Yun-Feng Lin
- Department of Neonatology, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Children's Hospital (Fujian Branch of Shanghai Children's Medical Center), Fuzhou, China.
- Department of Neonatology, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China.
- Fujian Key Laboratory of Women and Children's Critical Diseases Research, Fujian Women and Children's Hospital, Fuzhou, China.
| | - Yi-Rong Zheng
- Department of Cardiac Surgery, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Children's Hospital (Fujian Branch of Shanghai Children's Medical Center), Fuzhou, China.
- Fujian Key Laboratory of Women and Children's Critical Diseases Research, Fujian Women and Children's Hospital, Fuzhou, China.
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6
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Coiffard B, Dianti J, Telias I, Brochard LJ, Slutsky AS, Beck J, Sinderby C, Ferguson ND, Goligher EC. Dyssynchronous diaphragm contractions impair diaphragm function in mechanically ventilated patients. Crit Care 2024; 28:107. [PMID: 38566126 PMCID: PMC10988824 DOI: 10.1186/s13054-024-04894-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/27/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Pre-clinical studies suggest that dyssynchronous diaphragm contractions during mechanical ventilation may cause acute diaphragm dysfunction. We aimed to describe the variability in diaphragm contractile loading conditions during mechanical ventilation and to establish whether dyssynchronous diaphragm contractions are associated with the development of impaired diaphragm dysfunction. METHODS In patients receiving invasive mechanical ventilation for pneumonia, septic shock, acute respiratory distress syndrome, or acute brain injury, airway flow and pressure and diaphragm electrical activity (Edi) were recorded hourly around the clock for up to 7 days. Dyssynchronous post-inspiratory diaphragm loading was defined based on the duration of neural inspiration after expiratory cycling of the ventilator. Diaphragm function was assessed on a daily basis by neuromuscular coupling (NMC, the ratio of transdiaphragmatic pressure to diaphragm electrical activity). RESULTS A total of 4508 hourly recordings were collected in 45 patients. Edi was low or absent (≤ 5 µV) in 51% of study hours (median 71 h per patient, interquartile range 39-101 h). Dyssynchronous post-inspiratory loading was present in 13% of study hours (median 7 h per patient, interquartile range 2-22 h). The probability of dyssynchronous post-inspiratory loading was increased with reverse triggering (odds ratio 15, 95% CI 8-35) and premature cycling (odds ratio 8, 95% CI 6-10). The duration and magnitude of dyssynchronous post-inspiratory loading were associated with a progressive decline in diaphragm NMC (p < 0.01 for interaction with time). CONCLUSIONS Dyssynchronous diaphragm contractions may impair diaphragm function during mechanical ventilation. TRIAL REGISTRATION MYOTRAUMA, ClinicalTrials.gov NCT03108118. Registered 04 April 2017 (retrospectively registered).
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Affiliation(s)
- Benjamin Coiffard
- Department of Respiratory Medicine, Aix-Marseille University, APHM, Hôpital Nord, Marseille, France
| | - Jose Dianti
- Division of Respirology, Department of Medicine, University Health Network, Toronto, Canada
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
| | - Irene Telias
- Division of Respirology, Department of Medicine, University Health Network, Toronto, Canada
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
- Keenan Centre for Biomedical Research, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
| | - Laurent J Brochard
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
- Keenan Centre for Biomedical Research, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
| | - Arthur S Slutsky
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
- Keenan Centre for Biomedical Research, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
| | - Jennifer Beck
- Keenan Centre for Biomedical Research, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
- University of Toronto, Toronto, Canada
| | - Christer Sinderby
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
- Keenan Centre for Biomedical Research, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
- University of Toronto, Toronto, Canada
| | - Niall D Ferguson
- Division of Respirology, Department of Medicine, University Health Network, Toronto, Canada
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
- Toronto General Hospital Research Institute, 585 University Ave., 9-MaRS-9024, Toronto, ON, M5G 2N2, Canada
- Department of Physiology, University of Toronto, Toronto, Canada
- Institute for Health Policy, Management, and Evaluation, University of Toronto, Toronto, Canada
| | - Ewan C Goligher
- Division of Respirology, Department of Medicine, University Health Network, Toronto, Canada.
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada.
- Toronto General Hospital Research Institute, 585 University Ave., 9-MaRS-9024, Toronto, ON, M5G 2N2, Canada.
- Department of Physiology, University of Toronto, Toronto, Canada.
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7
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Rose L, Messer B. Prolonged Mechanical Ventilation, Weaning, and the Role of Tracheostomy. Crit Care Clin 2024; 40:409-427. [PMID: 38432703 DOI: 10.1016/j.ccc.2024.01.008] [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] [Indexed: 03/05/2024]
Abstract
Depending on the definitional criteria used, approximately 5% to 10% of critical adults will require prolonged mechanical ventilation with longer-term outcomes that are worse than those ventilated for a shorter duration. Outcomes are affected by patient characteristics before critical illness and its severity but also by organizational characteristics and care models. Definitive trials of interventions to inform care activities, such as ventilator weaning, upper airway management, rehabilitation, and nutrition specific to the prolonged mechanical ventilation patient population, are lacking. A structured and individualized approach developed by the multiprofessional team in discussion with the patient and their family is warranted.
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Affiliation(s)
- Louise Rose
- Florence Nightingale Faculty of Nursing, Midwifery and Palliative Care, King's College London, 57 Waterloo Road, London SE1 8WA, UK; Department of Critical Care and Lane Fox Unit, Guy's & St Thomas' NHS Foundation Trust, King's College London, 57 Waterloo Road, London SE1 8WA, UK.
| | - Ben Messer
- Royal Victoria Infirmary, Newcastle-Upon-Tyne NHS Hospitals NHS Foundation Trust, Queen Victoria Road, Newcastle upon Tyne NE1 4LP, UK
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Matlock DN, Ratcliffe SJ, Courtney SE, Kirpalani H, Firestone K, Stein H, Dysart K, Warren K, Goldstein MR, Lund KC, Natarajan A, Demissie E, Foglia EE. The Diaphragmatic Initiated Ventilatory Assist (DIVA) trial: study protocol for a randomized controlled trial comparing rates of extubation failure in extremely premature infants undergoing extubation to non-invasive neurally adjusted ventilatory assist versus non-synchronized nasal intermittent positive pressure ventilation. Trials 2024; 25:201. [PMID: 38509583 PMCID: PMC10953115 DOI: 10.1186/s13063-024-08038-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 03/06/2024] [Indexed: 03/22/2024] Open
Abstract
BACKGROUND Invasive mechanical ventilation contributes to bronchopulmonary dysplasia (BPD), the most common complication of prematurity and the leading respiratory cause of childhood morbidity. Non-invasive ventilation (NIV) may limit invasive ventilation exposure and can be either synchronized or non-synchronized (NS). Pooled data suggest synchronized forms may be superior. Non-invasive neurally adjusted ventilatory assist (NIV-NAVA) delivers NIV synchronized to the neural signal for breathing, which is detected with a specialized catheter. The DIVA (Diaphragmatic Initiated Ventilatory Assist) trial aims to determine in infants born 240/7-276/7 weeks' gestation undergoing extubation whether NIV-NAVA compared to non-synchronized nasal intermittent positive pressure ventilation (NS-NIPPV) reduces the incidence of extubation failure within 5 days of extubation. METHODS This is a prospective, unblinded, pragmatic, multicenter phase III randomized clinical trial. Inclusion criteria are preterm infants 24-276/7 weeks gestational age who were intubated within the first 7 days of life for at least 12 h and are undergoing extubation in the first 28 postnatal days. All sites will enter an initial run-in phase, where all infants are allocated to NIV-NAVA, and an independent technical committee assesses site performance. Subsequently, all enrolled infants are randomized to NIV-NAVA or NS-NIPPV at extubation. The primary outcome is extubation failure within 5 days of extubation, defined as any of the following: (1) rise in FiO2 at least 20% from pre-extubation for > 2 h, (2) pH ≤ 7.20 or pCO2 ≥ 70 mmHg; (3) > 1 apnea requiring positive pressure ventilation (PPV) or ≥ 6 apneas requiring stimulation within 6 h; (4) emergent intubation for cardiovascular instability or surgery. Our sample size of 478 provides 90% power to detect a 15% absolute reduction in the primary outcome. Enrolled infants will be followed for safety and secondary outcomes through 36 weeks' postmenstrual age, discharge, death, or transfer. DISCUSSION The DIVA trial is the first large multicenter trial designed to assess the impact of NIV-NAVA on relevant clinical outcomes for preterm infants. The DIVA trial design incorporates input from clinical NAVA experts and includes innovative features, such as a run-in phase, to ensure consistent technical performance across sites. TRIAL REGISTRATION www. CLINICALTRIALS gov , trial identifier NCT05446272 , registered July 6, 2022.
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Affiliation(s)
- David N Matlock
- University of Arkansas for Medical Sciences, 4301 W. Markham St., Slot 512-5B, Little Rock, AR, 72205, USA.
- University of Arkansas for Medical Sciences, Little Rock, AR, USA.
| | | | | | - Haresh Kirpalani
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- McMaster University, Hamilton, ON, Canada
| | | | | | - Kevin Dysart
- Nemours Children's Health Wilmington, Philadelphia, PA, USA
| | - Karen Warren
- The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | | | | | - Aruna Natarajan
- National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Ejigayehu Demissie
- National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Elizabeth E Foglia
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- The Children's Hospital of Philadelphia, Philadelphia, PA, USA
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9
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González-Castro A, Medina Villanueva A, Escudero-Acha P, Fajardo Campoverdi A, Gordo Vidal F, Martin-Loeches I, Rocha AR, Romero MC, Hernández López M, Ferrando C, Protti A, Modesto I Alapont V. Comprehensive study of mechanical power in controlled mechanical ventilation: Prevalence of elevated mechanical power and component analysis. Med Intensiva 2024; 48:155-164. [PMID: 37996266 DOI: 10.1016/j.medine.2023.11.004] [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: 05/26/2023] [Revised: 09/17/2023] [Accepted: 10/12/2023] [Indexed: 11/25/2023]
Abstract
OBJECTIVE To determine the prevalence of elevated mechanical power (MP) values (>17J/min) used in routine clinical practice. DESIGN Observational, descriptive, cross-sectional, analytical, multicenter, international study conducted on November 21, 2019, from 8:00 AM to 3:00 PM. NCT03936231. SETTING One hundred thirty-three Critical Care Units. PATIENTS Patients receiving invasive mechanical ventilation for any cause. INTERVENTIONS None. MAIN VARIABLES OF INTEREST Mechanical power. RESULTS A population of 372 patients was analyzed. PM was significantly higher in patients under pressure-controlled ventilation (PC) compared to volume-controlled ventilation (VC) (19.20±8.44J/min vs. 16.01±6.88J/min; p<0.001), but the percentage of patients with PM>17J/min was not different (41% vs. 35%, respectively; p=0.382). The best models according to AICcw expressing PM for patients in VC are described as follows: Surrogate Strain (Driving Pressure) + PEEP+Surrogate Strain Rate (PEEP/Flow Ratio) + Respiratory Rate. For patients in PC, it is defined as: Surrogate Strain (Expiratory Tidal Volume/PEEP) + PEEP+Surrogate Strain Rate (Surrogate Strain/Ti) + Respiratory Rate+Expiratory Tidal Volume+Ti. CONCLUSIONS A substantial proportion of mechanically ventilated patients may be at risk of experiencing elevated levels of mechanical power. Despite observed differences in mechanical power values between VC and PC ventilation, they did not result in a significant disparity in the prevalence of high mechanical power values.
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Affiliation(s)
| | | | - Patricia Escudero-Acha
- Department of Intensive Medicine, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | | | - Federico Gordo Vidal
- Department of Intensive Medicine, Hospital Universitario del Henares, Coslada-Madrid, Research Group for Critical Pathology, Universidad Francisco de Vitoria, Madrid, Spain
| | - Ignacio Martin-Loeches
- JFICMI, Consultant in Intensive Care Medicine, St James's University Hospital, Dublin, Ireland
| | - Angelo Roncalli Rocha
- Rehabilitation Division, Hélvio Auto Hospital, Alagoas, Brazil; University Center Cesmac, Alagoas, Brazil
| | - Marta Costa Romero
- Neonatology Department, Hospital Universitario de Cabueñes, Gijón, Spain
| | | | - Carlos Ferrando
- Anesthesiology and Resuscitation Service, Clinic University Hospital of Barcelona, Spain; CIBER Respiratory Diseases, ISCIII, Madrid, Spain
| | - Alessandro Protti
- IRCCS Humanitas Research Hospital, Rozzano, Milano, Italy; Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milano, Italy
| | - Vicent Modesto I Alapont
- Department of Anesthesiology and Pediatric Critical Care, Hospital Universitari i Politecnic La Fe de Valencia, Spain
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10
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Muttini S, Jona Falco J, Cuevas Cairo I, Umbrello M. A High Respiratory Drive Is Associated with Weaning Failure in Patients with COVID-19-Associated Acute Respiratory Distress Syndrome: The Role of the Electrical Activity of the Diaphragm. J Clin Med 2024; 13:1120. [PMID: 38398433 PMCID: PMC10889278 DOI: 10.3390/jcm13041120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/01/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Mechanical ventilation is the main supportive treatment of severe cases of COVID-19-associated ARDS (C-ARDS). Weaning failure is common and associated with worse outcomes. We investigated the role of respiratory drive, assessed by monitoring the electrical activity of the diaphragm (EAdi), as a predictor of weaning failure. METHODS Consecutive, mechanically ventilated patients admitted to the ICU for C-ARDS with difficult weaning were enrolled. Blood gas, ventilator, and respiratory mechanic parameters, as well as EAdi, were recorded at the time of placement of EAdi catheter, and then after 1, 2, 3, 7, and 10 days, and compared between patients with weaning success and weaning failure. RESULTS Twenty patients were enrolled: age 66 (60-69); 85% males; PaO2/FiO2 at admission 148 (126-177) mmHg. Thirteen subjects (65%) were classified as having a successful weaning. A younger age (OR(95%CI): 0.02 (0.01-0.11) per year), a higher PaO2/FiO2 ratio (OR(95%CI): 1.10 (1.01-1.21) per mmHg), and a lower EAdi (OR(95%CI): 0.16 (0.08-0.34) per μV) were associated with weaning success. CONCLUSION In critically ill patients with moderate-severe C-ARDS and difficult weaning from mechanical ventilation, a successful weaning was associated with a lower age, a higher oxygenation, and a lower respiratory drive, as assessed at the bedside via EAdi monitoring.
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Affiliation(s)
- Stefano Muttini
- Neuroscience Intensive Care Unit, San Carlo Borromeo Hospital, ASST Santi Paolo e Carlo, 20151 Milano, Italy; (S.M.); (J.J.F.)
| | - Jacopo Jona Falco
- Neuroscience Intensive Care Unit, San Carlo Borromeo Hospital, ASST Santi Paolo e Carlo, 20151 Milano, Italy; (S.M.); (J.J.F.)
| | - Ilmari Cuevas Cairo
- Department of Anaesthesia and Intensive Care Unit, San Carlo Borromeo Hospital, ASST Santi Paolo e Carlo, 20151 Milano, Italy;
| | - Michele Umbrello
- Department of Intensive care and Anaesthesia, Ospedale Civile di Legnano, ASST Ovest Milanese, 20025 Legnano, Italy
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11
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Widing H, Pellegrini M, Chiodaroli E, Persson P, Hallén K, Perchiazzi G. Positive end-expiratory pressure limits inspiratory effort through modulation of the effort-to-drive ratio: an experimental crossover study. Intensive Care Med Exp 2024; 12:10. [PMID: 38311676 PMCID: PMC10838888 DOI: 10.1186/s40635-024-00597-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 01/11/2024] [Indexed: 02/06/2024] Open
Abstract
BACKGROUND How assisted spontaneous breathing should be used during acute respiratory distress syndrome is questioned. Recent evidence suggests that high positive end-expiratory pressure (PEEP) may limit the risk of patient self-inflicted lung injury (P-SILI). The aim of this study was to assess the effects of PEEP on esophageal pressure swings, inspiratory drive, and the neuromuscular efficiency of ventilation. We hypothesized that high PEEP would reduce esophageal pressure swings, regardless of inspiratory drive changes, by modulating the effort-to-drive ratio (EDR). This was tested retrospectively in an experimental animal crossover study. Anesthetized pigs (n = 15) were subjected to mild to moderate lung injury and different PEEP levels were applied, changing PEEP from 0 to 15 cmH2O and back to 0 cmH2O in steps of 3 cmH2O. Airway pressure, esophageal pressure (Pes), and electric activity of the diaphragm (Edi) were collected. The EDR was calculated as the tidal change in Pes divided by the tidal change in Edi. Statistical differences were tested using the Wilcoxon signed-rank test. RESULTS Inspiratory esophageal pressure swings decreased from - 4.2 ± 3.1 cmH2O to - 1.9 ± 1.5 cmH2O (p < 0.01), and the mean EDR fell from - 1.12 ± 1.05 cmH2O/µV to - 0.24 ± 0.20 (p < 0.01) as PEEP was increased from 0 to 15 cmH2O. The EDR was significantly correlated to the PEEP level (rs = 0.35, p < 0.01). CONCLUSIONS Higher PEEP limits inspiratory effort by modulating the EDR of the respiratory system. These findings indicate that PEEP may be used in titration of the spontaneous impact on ventilation and in P-SILI risk reduction, potentially facilitating safe assisted spontaneous breathing. Similarly, ventilation may be shifted from highly spontaneous to predominantly controlled ventilation using PEEP. These findings need to be confirmed in clinical settings.
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Affiliation(s)
- Hannes Widing
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Akademiska sjukhuset, Ing 40, 3 tr, 751 85, Uppsala, Sweden.
- Department of Anesthesiology and Intensive Care Medicine, Region Västra Götaland, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden.
| | - Mariangela Pellegrini
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Akademiska sjukhuset, Ing 40, 3 tr, 751 85, Uppsala, Sweden
- Department of Anesthesia, Operation, and Intensive Care, Uppsala University Hospital, Uppsala, Sweden
| | - Elena Chiodaroli
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Akademiska sjukhuset, Ing 40, 3 tr, 751 85, Uppsala, Sweden
- Anesthesia and Intensive Care Medicine, Polo Universitario San Paolo, University of Milan, Milan, Italy
| | - Per Persson
- Department of Anesthesiology and Intensive Care Medicine, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Katarina Hallén
- Department of Anesthesiology and Intensive Care Medicine, Region Västra Götaland, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden
| | - Gaetano Perchiazzi
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Akademiska sjukhuset, Ing 40, 3 tr, 751 85, Uppsala, Sweden
- Department of Anesthesia, Operation, and Intensive Care, Uppsala University Hospital, Uppsala, Sweden
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12
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Jonkman AH, Warnaar RSP, Baccinelli W, Carbon NM, D'Cruz RF, Doorduin J, van Doorn JLM, Elshof J, Estrada-Petrocelli L, Graßhoff J, Heunks LMA, Koopman AA, Langer D, Moore CM, Nunez Silveira JM, Petersen E, Poddighe D, Ramsay M, Rodrigues A, Roesthuis LH, Rossel A, Torres A, Duiverman ML, Oppersma E. Analysis and applications of respiratory surface EMG: report of a round table meeting. Crit Care 2024; 28:2. [PMID: 38166968 PMCID: PMC10759550 DOI: 10.1186/s13054-023-04779-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 12/14/2023] [Indexed: 01/05/2024] Open
Abstract
Surface electromyography (sEMG) can be used to measure the electrical activity of the respiratory muscles. The possible applications of sEMG span from patients suffering from acute respiratory failure to patients receiving chronic home mechanical ventilation, to evaluate muscle function, titrate ventilatory support and guide treatment. However, sEMG is mainly used as a monitoring tool for research and its use in clinical practice is still limited-in part due to a lack of standardization and transparent reporting. During this round table meeting, recommendations on data acquisition, processing, interpretation, and potential clinical applications of respiratory sEMG were discussed. This paper informs the clinical researcher interested in respiratory muscle monitoring about the current state of the art on sEMG, knowledge gaps and potential future applications for patients with respiratory failure.
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Affiliation(s)
- A H Jonkman
- Department of Intensive Care Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - R S P Warnaar
- Cardiovascular and Respiratory Physiology, TechMed Centre, University of Twente, Enschede, The Netherlands
| | - W Baccinelli
- Netherlands eScience Center, Amsterdam, The Netherlands
| | - N M Carbon
- Department of Anesthesiology, Friedrich Alexander-Universität Erlangen-Nürnberg, Uniklinikum Erlangen, Erlangen, Germany
| | - R F D'Cruz
- Lane Fox Clinical Respiratory Physiology Research Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - J Doorduin
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - J L M van Doorn
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - J Elshof
- Department of Pulmonary Diseases/Home Mechanical Ventilation, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - L Estrada-Petrocelli
- Facultad de Ingeniería and Secretaría Nacional de Ciencia, Tecnología e Innovación (SENACYT) - Sistema Nacional de Investigación (SNI), Universidad Latina de Panamá (ULATINA), Panama, Panama
| | - J Graßhoff
- Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering, Lübeck, Germany
| | - L M A Heunks
- Department of Intensive Care, Radboud University Medical Center, Nijmegen, The Netherlands
| | - A A Koopman
- Division of Paediatric Critical Care Medicine, Department of Paediatrics, Beatrix Children's Hospital, University Medical Center Groningen, Groningen, The Netherlands
| | - D Langer
- Research Group for Rehabilitation in Internal Disorders, Department of Rehabilitation Sciences, KU Leuven, 3000, Leuven, Belgium
| | - C M Moore
- Netherlands eScience Center, Amsterdam, The Netherlands
| | - J M Nunez Silveira
- Hospital Italiano de Buenos Aires, Unidad de Terapia Intensiva, Ciudad de Buenos Aires, Argentina
| | - E Petersen
- Technical University of Denmark (DTU), DTU Compute, 2800, Kgs. Lyngby, Denmark
| | - D Poddighe
- Research Group for Rehabilitation in Internal Disorders, Department of Rehabilitation Sciences, KU Leuven, 3000, Leuven, Belgium
| | - M Ramsay
- Lane Fox Clinical Respiratory Physiology Research Centre, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - A Rodrigues
- Keenan Centre for Biomedical Research, Li Ka Shing Knowledge Institute, Unity Health Toronto, Toronto, ON, Canada
| | - L H Roesthuis
- Department of Intensive Care, Radboud University Medical Center, Nijmegen, The Netherlands
| | - A Rossel
- Department of Acute Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - A Torres
- Institut de Bioenginyeria de Catalunya (IBEC), Barcelona Institute of Science and Technology (BIST) and Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Universitat Politècnica de Catalunya BarcelonaTech (UPC), Barcelona, Spain
| | - M L Duiverman
- Department of Pulmonary Diseases/Home Mechanical Ventilation, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - E Oppersma
- Cardiovascular and Respiratory Physiology, TechMed Centre, University of Twente, Enschede, The Netherlands.
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13
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Boscolo A, Sella N, Pettenuzzo T, Pistollato E, Calabrese F, Gregori D, Cammarota G, Dres M, Rea F, Navalesi P. Diaphragm Dysfunction Predicts Weaning Outcome after Bilateral Lung Transplant. Anesthesiology 2024; 140:126-136. [PMID: 37552079 DOI: 10.1097/aln.0000000000004729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
BACKGROUND Diaphragm dysfunction and its effects on outcomes of ventilator weaning have been evaluated in mixed critical care populations using diaphragm thickening fraction (the ratio of the difference between ultrasound diaphragm thickness at end-inspiration and end-expiration to diaphragm thickness at end-expiration) or neuroventilatory efficiency (the ratio of tidal volume and peak electrical activity of the diaphragm). Such data are not available in bilateral-lung transplant recipients. The authors hypothesized that (1) diaphragm dysfunction, as defined by a diaphragm thickening fraction less than 29%, is more likely to occur in difficult weaning; (2) diaphragm thickening fraction and neuroventilatory efficiency predict weaning outcome; and (3) duration of mechanical ventilation before the first spontaneous breathing trial is associated with diaphragm dysfunction. METHODS Adult bilateral-lung transplant patients admitted to the intensive care unit were screened at the time of the first spontaneous breathing trial (pressure-support of 5 cm H2O and 0 positive end-expiratory pressure). At the fifth minute, diaphragm thickening fraction and neuroventilatory efficiency were measured during three respiratory cycles. Weaning was classified as simple, difficult, or prolonged (successful extubation at the first spontaneous breathing trial, within three or after three spontaneous breathing trials, respectively). RESULTS Forty-four subjects were enrolled. Diaphragm dysfunction occurred in 14 subjects (32%), all of whom had difficult weaning (78% of the subgroup of 18 patients experiencing difficult weaning). Both diaphragm thickening fraction (24 [20 to 29] vs. 39 [35 to 45]%) and neuroventilatory efficiency (34 [26 to 45] vs. 55 [43 to 62] ml/µV) were lower in difficult weaning (both P < 0.001). The areas under the receiver operator curve predicting difficult weaning were 0.88 (95% CI, 0.73 to 0.99) for diaphragm thickening fraction and 0.85 (95% CI, 0.71 to 0.95) for neuroventilatory efficiency. The duration of ventilation demonstrated a linear inverse correlation with both diaphragm thickening fraction and neuroventilatory efficiency. CONCLUSIONS Diaphragm dysfunction is common after bilateral-lung transplantation and associated with difficult weaning. In such patients, average values for diaphragm thickening fraction and neuroventilatory efficiency were reduced compared to patients with simple weaning. Both parameters showed similar accuracy for predicting success of ventilator weaning, demonstrating an inverse relationship with duration of ventilation. EDITOR’S PERSPECTIVE
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Affiliation(s)
- Annalisa Boscolo
- Department of Medicine, and Thoracic Surgery and Lung Transplant Unit, Department of Cardiac, Thoracic, Vascular Sciences, and Public Health, University of Padua, Padua, Italy; Institute of Anesthesia and Intensive Care, Padua University Hospital, Padua, Italy
| | - Nicolò Sella
- Institute of Anesthesia and Intensive Care, Padua University Hospital, Padua, Italy
| | - Tommaso Pettenuzzo
- Institute of Anesthesia and Intensive Care, Padua University Hospital, Padua, Italy
| | | | - Fiorella Calabrese
- Thoracic Surgery and Lung Transplant Unit, Department of Cardiac, Thoracic, Vascular Sciences, and Public Health, University of Padua, Padua, Italy
| | - Dario Gregori
- Unit of Biostatistics, Epidemiology and Public Health, Department of Cardiac, Thoracic, Vascular Sciences, and Public Health, University of Padua, Padua, Italy
| | | | - Martin Dres
- Department of Critical Care, St. Michael's Hospital and the Critical Illness and Injury Research Center, Keenan Research Center for Biomedical Science of St. Michael's Hospital, Toronto, Ontario, Canada
| | - Federico Rea
- Thoracic Surgery and Lung Transplant Unit, Department of Cardiac, Thoracic, Vascular Sciences, and Public Health, University of Padua, Padua, Italy
| | - Paolo Navalesi
- Department of Medicine, University of Padua, Padua, Italy; Institute of Anesthesia and Intensive Care, Padua University Hospital, Padua, Italy
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14
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Bhader M, Al-Hindi M, Ghaddaf A, Alamoudi A, Abualola A, Kalantan R, AlKhulifi N, Halawani I, Al-Qurashi M. Noninvasive Neurally Adjusted Ventilation versus Nasal Continuous or Intermittent Positive Airway Pressure for Preterm Infants: A Systematic Review and Meta-Analysis. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1935. [PMID: 38136137 PMCID: PMC10741611 DOI: 10.3390/children10121935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/08/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023]
Abstract
The noninvasive neurally adjusted ventilatory assist (NIV-NAVA) is a newly developed noninvasive ventilation technique with promising clinical and ventilatory outcomes for preterm infants. This systematic review and meta-analysis aimed to investigate whether NIV-NAVA has better clinical and ventilatory outcomes than nasal continuous airway pressure (NCPAP) or noninvasive positive pressure ventilation (NIPP) on premature infants. MEDLINE, Embase, and CENTRAL were searched, and randomized controlled trials (RCTs) that compared NIV-NAVA with NCPAP or NIPP for preterm infants (gestational age: <37 weeks) were included. We evaluated the following outcomes in the neonatal intensive care unit: the desaturation rate, failure of noninvasive modality requiring intubation when received as the primary mode or the need for re-intubation after extubation from mechanical ventilation in the secondary mode (weaning), length of stay, and fraction of inspired oxygen. The mean difference and risk ratio were used to represent continuous and dichotomous outcomes, respectively. We included nine RCTs involving 339 preterm infants overall. NIV-NAVA showed similar clinical and ventilatory outcomes to NCPAP or NIPP, except for the maximum diaphragmatic electrical activity. The rate of failure of the noninvasive modality was not statistically different between NIV-NAVA and NCPAP. The pooled estimates for the maximum electrical activity were significantly reduced in NIV-NAVA compared with those in NIPP. The findings suggest that NIV-NAVA may be as safe and effective as NCPAP and NIPP for preterm neonates, particularly those who may not tolerate these alternative noninvasive methods. However, further trials are recommended for greater evidence.
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Affiliation(s)
- Mohammed Bhader
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah 21423, Saudi Arabia; (M.A.-H.); (A.G.); (A.A.); (R.K.); (N.A.); (M.A.-Q.)
- King Abdullah International Medical Research Center, Jeddah 22384, Saudi Arabia
| | - Mohammed Al-Hindi
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah 21423, Saudi Arabia; (M.A.-H.); (A.G.); (A.A.); (R.K.); (N.A.); (M.A.-Q.)
- King Abdullah International Medical Research Center, Jeddah 22384, Saudi Arabia
- Department of Pediatrics, King Abdulaziz Medical City, Jeddah 22384, Saudi Arabia
| | - Abdullah Ghaddaf
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah 21423, Saudi Arabia; (M.A.-H.); (A.G.); (A.A.); (R.K.); (N.A.); (M.A.-Q.)
- King Abdullah International Medical Research Center, Jeddah 22384, Saudi Arabia
| | - Anas Alamoudi
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah 21423, Saudi Arabia; (M.A.-H.); (A.G.); (A.A.); (R.K.); (N.A.); (M.A.-Q.)
- King Abdullah International Medical Research Center, Jeddah 22384, Saudi Arabia
| | - Amal Abualola
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah 21423, Saudi Arabia; (M.A.-H.); (A.G.); (A.A.); (R.K.); (N.A.); (M.A.-Q.)
- King Abdullah International Medical Research Center, Jeddah 22384, Saudi Arabia
| | - Renad Kalantan
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah 21423, Saudi Arabia; (M.A.-H.); (A.G.); (A.A.); (R.K.); (N.A.); (M.A.-Q.)
- King Abdullah International Medical Research Center, Jeddah 22384, Saudi Arabia
| | - Norah AlKhulifi
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah 21423, Saudi Arabia; (M.A.-H.); (A.G.); (A.A.); (R.K.); (N.A.); (M.A.-Q.)
- King Abdullah International Medical Research Center, Jeddah 22384, Saudi Arabia
| | - Ibrahim Halawani
- College of Medicine, King Abdulaziz University, Jeddah 22252, Saudi Arabia;
| | - Mansour Al-Qurashi
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah 21423, Saudi Arabia; (M.A.-H.); (A.G.); (A.A.); (R.K.); (N.A.); (M.A.-Q.)
- King Abdullah International Medical Research Center, Jeddah 22384, Saudi Arabia
- Department of Pediatrics, King Abdulaziz Medical City, Jeddah 22384, Saudi Arabia
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15
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Zhang R, Xu X, Chen H, Beck J, Sinderby C, Qiu H, Yang Y, Liu L. Predicting extubation in patients with traumatic cervical spinal cord injury using the diaphragm electrical activity during a single maximal maneuver. Ann Intensive Care 2023; 13:122. [PMID: 38055103 DOI: 10.1186/s13613-023-01217-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 11/20/2023] [Indexed: 12/07/2023] Open
Abstract
BACKGROUND The unsuccessful extubation in patients with traumatic cervical spinal cord injuries (CSCI) may result from impairment diaphragm function and monitoring of diaphragm electrical activity (EAdi) can be informative in guiding extubation. We aimed to evaluate whether the change of EAdi during a single maximal maneuver can predict extubation outcomes in CSCI patients. METHODS This is a retrospective study of CSCI patients requiring mechanical ventilation in the ICU of a tertiary hospital. A single maximal maneuver was performed by asking each patient to inhale with maximum strength during the first spontaneous breathing trial (SBT). The baseline (during SBT before maximal maneuver), maximum (during the single maximal maneuver), and the increase of EAdi (ΔEAdi, equal to the difference between baseline and maximal) were measured. The primary outcome was extubation success, defined as no reintubation after the first extubation and no tracheostomy before any extubation during the ICU stay. RESULTS Among 107 patients enrolled, 50 (46.7%) were extubated successfully at the first SBT. Baseline EAdi, maximum EAdi, and ΔEAdi were significantly higher, and the rapid shallow breathing index was lower in patients who were extubated successfully than in those who failed. By multivariable logistic analysis, ΔEAdi was independently associated with successful extubation (OR 2.03, 95% CI 1.52-3.17). ΔEAdi demonstrated high diagnostic accuracy in predicting extubation success with an AUROC 0.978 (95% CI 0.941-0.995), and the cut-off value was 7.0 μV. CONCLUSIONS The increase of EAdi from baseline SBT during a single maximal maneuver is associated with successful extubation and can help guide extubation in CSCI patients.
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Affiliation(s)
- Rui Zhang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine, Zhongda Hospital, School of Medicine,, Southeast University, Nanjing, 210009, Jiangsu, China
| | - Xiaoting Xu
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine, Zhongda Hospital, School of Medicine,, Southeast University, Nanjing, 210009, Jiangsu, China
| | - Hui Chen
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine, Zhongda Hospital, School of Medicine,, Southeast University, Nanjing, 210009, Jiangsu, China
- Department of Critical Care Medicine, The First Affiliated Hospital of Soochow University, Soochow University, No. 899 Pinghai Road, Suzhou, 215000, People's Republic of China
| | - Jennifer Beck
- Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Department of Critical Care, St. Michael's Hospital, Toronto, Canada
- Department of Pediatrics, University of Toronto, Toronto, Canada
- Member, Institute for Biomedical Engineering and Science Technology (iBEST) at Ryerson University and St-Michael's Hospital, Toronto, Canada
| | - Christer Sinderby
- Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Department of Critical Care, St. Michael's Hospital, Toronto, Canada
- Member, Institute for Biomedical Engineering and Science Technology (iBEST) at Ryerson University and St-Michael's Hospital, Toronto, Canada
- Department of Medicine and Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
| | - Haibo Qiu
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine, Zhongda Hospital, School of Medicine,, Southeast University, Nanjing, 210009, Jiangsu, China
| | - Yi Yang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine, Zhongda Hospital, School of Medicine,, Southeast University, Nanjing, 210009, Jiangsu, China
| | - Ling Liu
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine, Zhongda Hospital, School of Medicine,, Southeast University, Nanjing, 210009, Jiangsu, China.
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16
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Mohamed MSA, Moerer O, Harnisch LO. Recording of a left ventricle assist device electrical current with a neurally adjusted ventilation assist (NAVA) catheter: a small case series. J Clin Monit Comput 2023; 37:1635-1639. [PMID: 37458915 DOI: 10.1007/s10877-023-01055-9] [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: 03/29/2023] [Accepted: 06/27/2023] [Indexed: 11/16/2023]
Abstract
BACKGROUND Neurally Adjusted Ventilatory Assist (NAVA) is an adaptive ventilation mode that recognizes electromyographic diaphragmatic activation as a sensory input to control the ventilator. NAVA may be of interest in prolonged mechanical ventilation and weaning, as it provides effort-adapted support, improves patient-ventilator synchronization, and allows additional monitoring of neuromuscular function and drive. Ventricular assist devices (VAD), especially for the left ventricle (LVAD), are increasingly entering clinical practice, and intensivists are faced with distinct challenges such as the interaction between the system and other measures of organ support. CASE PRESENTATION We present two cases in which a NAVA mode was intended to support ventilator weaning in patients with recent LVAD implantation (HeartMate III®). However, in these patients, the electrical activity of the diaphragm (Edi) could not be used to control the ventilator, because the LVAD current detected by the catheter superposed the Edi current, making usage of this mode impossible. DISCUSSION/CONCLUSIONS An implanted LVAD can render the NAVA signal unusable for ventilatory support because the LVAD signal can interfere with the recording of electromyographic activation of the diaphragm. Therefore, patients with implanted LVAD may need other modes of ventilation than NAVA for advanced weaning strategies.
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Affiliation(s)
- M Salaheldin Atta Mohamed
- Department of Anaesthesiology, University Medical Center of Göttingen, Robert-Koch-Str. 40, D-37075, Göttingen, Germany
| | - O Moerer
- Department of Anaesthesiology, University Medical Center of Göttingen, Robert-Koch-Str. 40, D-37075, Göttingen, Germany
| | - L O Harnisch
- Department of Anaesthesiology, University Medical Center of Göttingen, Robert-Koch-Str. 40, D-37075, Göttingen, Germany.
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17
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Lavizzari A, Zannin E, Klotz D, Dassios T, Roehr CC. State of the art on neonatal noninvasive respiratory support: How physiological and technological principles explain the clinical outcomes. Pediatr Pulmonol 2023; 58:2442-2455. [PMID: 37378417 DOI: 10.1002/ppul.26561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 05/26/2023] [Accepted: 06/10/2023] [Indexed: 06/29/2023]
Abstract
Noninvasive respiratory support has gained significant popularity in neonatal units because of its potential to reduce lung injury associated with invasive mechanical ventilation. To minimize lung injury, clinicians aim to apply for noninvasive respiratory support as early as possible. However, the physiological background and the technology behind such support modes are not always clear, and many open questions remain regarding the indications of use and clinical outcomes. This narrative review discusses the currently available evidence for various noninvasive respiratory support modes applied in Neonatal Medicine in terms of physiological effects and indications. Reviewed modes include nasal continuous positive airway pressure, nasal high-flow therapy, noninvasive high-frequency oscillatory ventilation, nasal intermittent positive pressure ventilation (NIPPV), synchronized NIPPV and noninvasive neurally adjusted ventilatory assist. To enhance clinicians' awareness of each support mode's strengths and limitations, we summarize technical features related to the functioning mechanisms of devices and the physical properties of the interfaces commonly used for providing noninvasive respiratory support to neonates. We finally address areas of current controversy and suggest possible areas of research for implementing noninvasive respiratory support in neonatal intensive care units.
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Affiliation(s)
- Anna Lavizzari
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neonatal Intensive Care Unit, Milan, Italy
| | - Emanuela Zannin
- Fondazione Monza e Brianza per il Bambino e la sua Mamma, Monza, Italy
| | - Daniel Klotz
- Center for Pediatrics, Division of Neonatology, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany
| | - Theodore Dassios
- Neonatal Intensive Care Centre, King's College Hospital NHS Foundation Trust, London, UK
| | - Charles C Roehr
- Faculty of Health Sciences, University of Bristol, Bristol, UK
- National Perinatal Epidemiology Unit, Clinical Trials Unit, Nuffield Department of Population Health, Medical Sciences Division, University of Oxford, Oxford, UK
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18
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Liu L, Li HL, Lu C, Patel P, Wang D, Beck J, Sinderby C. Estimation of transpulmonary driving pressure during synchronized mechanical ventilation using a single lower assist maneuver (LAM) in rabbits: a comparison to measurements made with an esophageal balloon. Crit Care 2023; 27:325. [PMID: 37626372 PMCID: PMC10463600 DOI: 10.1186/s13054-023-04607-2] [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: 04/17/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND Mechanical ventilation is applied to unload the respiratory muscles, but knowledge about transpulmonary driving pressure (ΔPL) is important to minimize lung injury. We propose a method to estimate ΔPL during neurally synchronized assisted ventilation, with a simple intervention of lowering the assist for one breath ("lower assist maneuver", LAM). METHODS In 24 rabbits breathing spontaneously with imposed loads, titrations of increasing assist were performed, with two neurally synchronized modes: neurally adjusted ventilatory assist (NAVA) and neurally triggered pressure support (NPS). Two single LAM breaths (not sequentially, but independently) were performed at each level of assist by acutely setting the assist to zero cm H2O (NPS) or NAVA level 0 cm H2O/uV (NAVA) for one breath. NPS and NAVA titrations were followed by titrations in controlled-modes (volume control, VC and pressure control, PC), under neuro-muscular blockade. Breaths from the NAVA/NPS titrations were matched (for flow and volume) to VC or PC. Throughout all runs, we measured diaphragm electrical activity (Edi) and esophageal pressure (PES). We measured ΔPL during the spontaneous modes (PL_PES) and controlled mechanical ventilation (CMV) modes (PL_CMV) with the esophageal balloon. From the LAMs, we derived an estimation of ΔPL ("PL_LAM") using a correction factor (ratio of volume during the LAM and volume during assist) and compared it to measured ΔPL during passive (VC or PC) and spontaneous breathing (NAVA or NPS). A requirement for the LAM was similar Edi to the assisted breath. RESULTS All animals successfully underwent titrations and LAMs for NPS/NAVA. One thousand seven-hundred ninety-two (1792) breaths were matched to passive ventilation titrations (matched Vt, r = 0.99). PL_LAM demonstrated strong correlation with PL_CMV (r = 0.83), and PL_PES (r = 0.77). Bland-Altman analysis revealed little difference between the predicted PL_LAM and measured PL_CMV (Bias = 0.49 cm H2O and 1.96SD = 3.09 cm H2O). For PL_PES, the bias was 2.2 cm H2O and 1.96SD was 3.4 cm H2O. Analysis of Edi and PES at peak Edi showed progressively increasing uncoupling with increasing assist. CONCLUSION During synchronized mechanical ventilation, a LAM breath allows for estimations of transpulmonary driving pressure, without measuring PES, and follows a mathematical transfer function to describe respiratory muscle unloading during synchronized assist.
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Affiliation(s)
- Ling Liu
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Hong-Liang Li
- Department of Critical Care Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Cong Lu
- Institute of Medical Science, University of Toronto, Toronto, Canada
- Department of Critical Care, St. Michael's Hospital, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B1W8, Canada
| | - Purab Patel
- Department of Critical Care, St. Michael's Hospital, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B1W8, Canada
| | - Danqiong Wang
- Department of Critical Care Medicine, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, 324000, China
| | - Jennifer Beck
- Department of Critical Care, St. Michael's Hospital, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B1W8, Canada.
- Department of Pediatrics, University of Toronto, Toronto, Canada.
- Member, Institute for Biomedical Engineering and Science Technology (iBEST) at Ryerson University and St-Michael's Hospital, Toronto, Canada.
| | - Christer Sinderby
- Department of Critical Care, St. Michael's Hospital, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B1W8, Canada
- Member, Institute for Biomedical Engineering and Science Technology (iBEST) at Ryerson University and St-Michael's Hospital, Toronto, Canada
- Department of Medicine and Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
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19
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Jonkman AH, Telias I, Spinelli E, Akoumianaki E, Piquilloud L. The oesophageal balloon for respiratory monitoring in ventilated patients: updated clinical review and practical aspects. Eur Respir Rev 2023; 32:220186. [PMID: 37197768 PMCID: PMC10189643 DOI: 10.1183/16000617.0186-2022] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 02/22/2023] [Indexed: 05/19/2023] Open
Abstract
There is a well-recognised importance for personalising mechanical ventilation settings to protect the lungs and the diaphragm for each individual patient. Measurement of oesophageal pressure (P oes) as an estimate of pleural pressure allows assessment of partitioned respiratory mechanics and quantification of lung stress, which helps our understanding of the patient's respiratory physiology and could guide individualisation of ventilator settings. Oesophageal manometry also allows breathing effort quantification, which could contribute to improving settings during assisted ventilation and mechanical ventilation weaning. In parallel with technological improvements, P oes monitoring is now available for daily clinical practice. This review provides a fundamental understanding of the relevant physiological concepts that can be assessed using P oes measurements, both during spontaneous breathing and mechanical ventilation. We also present a practical approach for implementing oesophageal manometry at the bedside. While more clinical data are awaited to confirm the benefits of P oes-guided mechanical ventilation and to determine optimal targets under different conditions, we discuss potential practical approaches, including positive end-expiratory pressure setting in controlled ventilation and assessment of inspiratory effort during assisted modes.
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Affiliation(s)
- Annemijn H Jonkman
- Department of Intensive Care Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Irene Telias
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
- Division of Respirology, Department of Medicine, University Health Network and Mount Sinai Hospital, Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science, Li Ka Shing Knowledge Institute, St Michael's Hospital-Unity Health Toronto, Toronto, ON, Canada
| | - Elena Spinelli
- Dipartimento di Anestesia, Rianimazione ed Emergenza-Urgenza, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Evangelia Akoumianaki
- Adult Intensive Care Unit, University Hospital of Heraklion, Heraklion, Greece
- Medical School, University of Crete, Heraklion, Greece
| | - Lise Piquilloud
- Adult Intensive Care Unit, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland
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20
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Luján M, Lalmolda C. Ventilators, Settings, Autotitration Algorithms. J Clin Med 2023; 12:jcm12082942. [PMID: 37109277 PMCID: PMC10141077 DOI: 10.3390/jcm12082942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/10/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
The choice of a ventilator model for a single patient is usually based on parameters such as size (portability), presence or absence of battery and ventilatory modes. However, there are many details within each ventilator model about triggering, pressurisation or autotitration algorithms that may go unnoticed, but may be important or may justify some drawbacks that may occur during their use in individual patients. This review is intended to emphasize these differences. Guidance is also provided on the operation of autotitration algorithms, in which the ventilator is able to take decisions based on a measured or estimated parameter. It is important to know how they work and their potential sources of error. Current evidence on their use is also provided.
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Affiliation(s)
- Manel Luján
- Servei de Pneumologia, Hospital Universitari Parc Taulí, 08208 Sabadell, Spain
- Centro de Investigacion Biomédica en Red (CIBERES), 28029 Madrid, Spain
| | - Cristina Lalmolda
- Servei de Pneumologia, Hospital Universitari Parc Taulí, 08208 Sabadell, Spain
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21
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Koopman AA, van Dijk J, Oppersma E, Blokpoel RGT, Kneyber MCJ. Surface electromyography to quantify neuro-respiratory drive and neuro-mechanical coupling in mechanically ventilated children. Respir Res 2023; 24:77. [PMID: 36915106 PMCID: PMC10010013 DOI: 10.1186/s12931-023-02374-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 02/22/2023] [Indexed: 03/16/2023] Open
Abstract
BACKGROUND The patient's neuro-respiratory drive, measured as electrical activity of the diaphragm (EAdi), quantifies the mechanical load on the respiratory muscles. It correlates with respiratory effort but requires a dedicated esophageal catheter. Transcutaneous (surface) monitoring of respiratory muscle electromyographic (sEMG) signals may be considered a suitable alternative to EAdi because of its non-invasive character, with the additional benefit that it allows for simultaneously monitoring of other respiratory muscles. We therefore sought to study the neuro-respiratory drive and timing of inspiratory muscles using sEMG in a cohort of children enrolled in a pediatric ventilation liberation trial. The neuro-mechanical coupling, relating the pressure generated by the inspiratory muscles to the sEMG signals of these muscles, was also calculated. METHODS This is a secondary analysis of data from a randomized cross-over trial in ventilated patients aged < 5 years. sEMG recordings of the diaphragm and parasternal intercostal muscles (ICM), esophageal pressure tracings and ventilator scalars were simultaneously recorded during continuous spontaneous ventilation and pressure controlled-intermittent mandatory ventilation, and at three levels of pressure support. Neuro-respiratory drive, timing of diaphragm and ICM relative to the mechanical ventilator's inspiration and neuro-mechanical coupling were quantified. RESULTS Twenty-nine patients were included (median age: 5.9 months). In response to decreasing pressure support, both amplitude of sEMG (diaphragm: p = 0.001 and ICM: p = 0.002) and neuro-mechanical efficiency indices increased (diaphragm: p = 0.05 and ICM: p < 0.001). Poor correlations between neuro-respiratory drive and respiratory effort were found, with R2: 0.088 [0.021-0.152]. CONCLUSIONS sEMG allows for the quantification of the electrical activity of the diaphragm and ICM in mechanically ventilated children. Both neuro-respiratory drive and neuro-mechanical efficiency increased in response to lower inspiratory assistance. There was poor correlation between neuro-respiratory drive and respiratory effort. TRIAL REGISTRATION ClinicalTrials.gov ID NCT05254691. Registered 24 February 2022, registered retrospectively.
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Affiliation(s)
- Alette A Koopman
- Division of Paediatric Critical Care Medicine, Department of Paediatrics, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands.
| | - Jefta van Dijk
- Division of Paediatric Critical Care Medicine, Department of Paediatrics, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Eline Oppersma
- Cardiovascular and Respiratory Physiology Group, TechMed Centre, University of Twente, Enschede, The Netherlands
| | - Robert G T Blokpoel
- Division of Paediatric Critical Care Medicine, Department of Paediatrics, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Martin C J Kneyber
- Division of Paediatric Critical Care Medicine, Department of Paediatrics, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands.,Critical Care, Anaesthesiology, Peri-Operative & Emergency Medicine (CAPE), University of Groningen, Groningen, The Netherlands
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22
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Choi C, Lemmink G, Humanez J. Postoperative Respiratory Failure and Advanced Ventilator Settings. Anesthesiol Clin 2023; 41:141-159. [PMID: 36871996 DOI: 10.1016/j.anclin.2022.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Postoperative respiratory failure has a multifactorial etiology, of which atelectasis is the most common mechanism. Its injurious effects are magnified by surgical inflammation, high driving pressures, and postoperative pain. Chest physiotherapy and noninvasive ventilation are good options to prevent progression of respiratory failure. Acute respiratory disease syndrome is a late and severe finding, which is associated with high morbidity and mortality. If present, proning is a safe, effective, and underutilized therapy. Extracorporeal membrane oxygenation is an option only when traditional supportive measures have failed.
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Affiliation(s)
- Christopher Choi
- Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9068, USA.
| | - Gretchen Lemmink
- Department of Anesthesiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0531, USA
| | - Jose Humanez
- Department of Anesthesiology, University of Florida College of Medicine - Jacksonville, 655 West 8th Street, C72, Jacksonville, FL 32209, USA
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23
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Dreyfus L, Butin M, Plaisant F, Claris O, Baudin F. Respiratory physiology during NAVA ventilation in neonates born with a congenital diaphragmatic hernia: The "NAVA-diaph" pilot study. Pediatr Pulmonol 2023; 58:1542-1550. [PMID: 36807570 DOI: 10.1002/ppul.26357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 02/20/2023]
Abstract
BACKGROUND Neurally adjusted ventilatory assist (NAVA) is a ventilatory mode that delivers synchronized ventilation, proportional to the electrical activity of the diaphragm (EAdi). Although it has been proposed in infants with a congenital diaphragmatic hernia (CDH), the diaphragmatic defect and the surgical repair could alter the physiology of the diaphragm. AIM To evaluate, in a pilot study, the relationship between the respiratory drive (EAdi) and the respiratory effort in neonates with CDH during the postsurgical period under either NAVA ventilation or conventional ventilation (CV). METHODS This prospective physiological study included eight neonates admitted to a neonatal intensive care unit with a diagnosis of CDH. EAdi, esophageal, gastric, and transdiaphragmatic pressure, as well as clinical parameters, were recorded during NAVA and CV (synchronized intermittent mandatory pressure ventilation) in the postsurgical period. RESULTS EAdi was detectable and there was a correlation between the ΔEAdi (maximal - minimal values) and the transdiaphragmatic pressure (r = 0.26, 95% confidence interval [CI] [0.222; 0.299]). There was no significant difference in terms of clinical or physiological parameters during NAVA compared to CV, including work of breathing. CONCLUSION Respiratory drive and effort were correlated in infants with CDH and therefore NAVA is a suitable proportional mode in this population. EAdi can also be used to monitor the diaphragm for individualized support.
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Affiliation(s)
- Lélia Dreyfus
- Service de Néonatologie et Réanimation Néonatale, Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Bron, France
| | - Marine Butin
- Service de Néonatologie et Réanimation Néonatale, Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Bron, France
- Centre International de Recherche en infectiologie (CIRI), Team "Pathogénie des Staphylocoques", CNRS, UMR5308, ENS de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, Lyon, France
| | - Frank Plaisant
- Service de Néonatologie et Réanimation Néonatale, Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Bron, France
| | - Olivier Claris
- Service de Néonatologie et Réanimation Néonatale, Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Bron, France
- EA 419, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Florent Baudin
- Service de réanimation pédiatrique, Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Bron, France
- Unité APCSe (UP 2021, A101), Universités de Lyon, VetAgro Sup, Marcy l'Etoile, France
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24
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Cardiorespiratory coupling in mechanically ventilated patients studied via synchrogram analysis. Med Biol Eng Comput 2023; 61:1329-1341. [PMID: 36698031 DOI: 10.1007/s11517-023-02784-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 01/15/2023] [Indexed: 01/27/2023]
Abstract
Respiration and cardiac activity are strictly interconnected with reciprocal influences. They act as weakly coupled oscillators showing varying degrees of phase synchronization and their interactions are affected by mechanical ventilation. The study aims at differentiating the impact of three ventilatory modes on the cardiorespiratory phase coupling in critically ill patients. The coupling between respiration and heartbeat was studied through cardiorespiratory phase synchronization analysis carried out via synchrogram during pressure control ventilation (PCV), pressure support ventilation (PSV), and neurally adjusted ventilatory assist (NAVA) in critically ill patients. Twenty patients were studied under all the three ventilatory modes. Cardiorespiratory phase synchronization changed significantly across ventilatory modes. The highest synchronization degree was found during PCV session, while the lowest one with NAVA. The percentage of all epochs featuring synchronization regardless of the phase locking ratio was higher with PCV (median: 33.9%, first-third quartile: 21.3-39.3) than PSV (median: 15.7%; first-third quartile: 10.9-27.8) and NAVA (median: 3.7%; first-third quartile: 3.3-19.2). PCV induces a significant amount of cardiorespiratory phase synchronization in critically ill mechanically ventilated patients. Synchronization induced by patient-driven ventilatory modes was weaker, reaching the minimum with NAVA. Findings can be explained as a result of the more regular and powerful solicitation of the cardiorespiratory system induced by PCV. The degree of phase synchronization between cardiac and respiratory activities in mechanically ventilated humans depends on the ventilatory mode.
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25
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A randomized controlled trial comparing non-invasive ventilation delivered using neurally adjusted ventilator assist (NAVA) or adaptive support ventilation (ASV) in patients with acute exacerbation of chronic obstructive pulmonary disease. J Crit Care 2023; 75:154250. [PMID: 36680884 DOI: 10.1016/j.jcrc.2022.154250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 11/17/2022] [Accepted: 12/27/2022] [Indexed: 01/21/2023]
Abstract
PURPOSE No study has compared neurally adjusted ventilator assist (NAVA) with adaptive support ventilation (ASV) during non-invasive ventilation (NIV) in subjects with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). MATERIALS AND METHODS In this randomized controlled trial, we compared NAVA-NIV with ASV-NIV for delivering NIV in consecutive subjects with AECOPD. The primary outcome was NIV failure rate (invasive mechanical ventilation). The key secondary outcomes were number of NIV manipulations, asynchrony index, and 90-day mortality. RESULTS We enrolled 76 subjects (NAVA-NIV, n = 36, ASV-NIV, n = 40; 74% males) with a mean ± SD age of 61.4 ± 8.2 years. We found no difference in NIV failure rates between the two arms (NAVA-NIV vs. ASV-NIV; 8/36 [22.2%] vs. 8/40 [20%]; p = 0.83). The median physician manipulations for NIV were significantly less in the ASV-NIV arm than in the NAVA-NIV arm (2 [0.8-4] vs. 3 [2-5]; p= 0.014) during the initial 24-h. We found no difference in median asynchrony index (NAVA-NIV vs. ASV-NIV, 16.6% vs. 16.4%, p = 0.5) and 90-day mortality (22.2% vs. 17.5%, p = 0.67). CONCLUSION The use of NAVA-NIV was not superior to ASV-NIV in reducing NIV failure rates in AECOPD. Both NAVA-NIV and ASV-NIV had similar asynchrony index and 90-day mortality. TRIAL REGISTRY www. CLINICALTRIALS gov (NCT04414891).
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26
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On seasonal functional modeling under strong dependence, with applications to mechanically ventilated breathing activity. J Stat Plan Inference 2023. [DOI: 10.1016/j.jspi.2022.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Poole G, Shetty S, Greenough A. The use of neurally-adjusted ventilatory assist (NAVA) for infants with congenital diaphragmatic hernia (CDH). J Perinat Med 2022; 50:1163-1167. [PMID: 35795983 DOI: 10.1515/jpm-2022-0199] [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: 04/25/2022] [Accepted: 06/08/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Newborns with congenital diaphragmatic hernia (CDH) can have complex respiratory problems which are worsened by ventilatory induced lung injury. Neurally adjusted ventilator assist (NAVA) is a potentially promising ventilation mode for this population, as it can result in improved patient-ventilator interactions and provision of adequate gas exchange at lower airway pressures. CONTENT A literature review was undertaken to provide an overview of NAVA and examine its role in the management of infants with CDH. SUMMARY NAVA in neonates has been used in CDH infants who were stable on ventilatory support or being weaned from mechanical ventilation and was associated with a reduction in the level of respiratory support. OUTLOOK There is, however, limited evidence regarding the efficacy of NAVA in infants with CDH, with only short-term benefits being investigated. A prospective, multicentre study with long term follow-up is required to appropriately assess NAVA in this population.
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Affiliation(s)
- Grace Poole
- Department of Child Health, Kings College Hospital NHS Foundation Trust, London, UK
| | - Sandeep Shetty
- Neonatal Unit, St George's Hospital NHS Foundation Trust, 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.,National institute for Health Research (NIHR) Biomedical Research Centre at Guy's and St Thomas' National Health Service (NHS) Foundation Trust and King's College London, London, UK
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28
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Convolutional neural network-based respiration analysis of electrical activities of the diaphragm. Sci Rep 2022; 12:16671. [PMID: 36198756 PMCID: PMC9534871 DOI: 10.1038/s41598-022-21165-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 09/23/2022] [Indexed: 11/09/2022] Open
Abstract
The electrical activity of the diaphragm (Edi) is considered a new respiratory vital sign for monitoring breathing patterns and efforts during ventilator care. However, the Edi signal contains irregular noise from complex causes, which makes reliable breathing analysis difficult. Deep learning was implemented to accurately detect the Edi signal peaks and analyze actual neural breathing in premature infants. Edi signals were collected from 17 premature infants born before gestational age less than 32 weeks, who received ventilatory support with a non-invasive neurally adjusted ventilatory assist. First, a local maximal detection method that over-detects candidate Edi peaks was used. Subsequently, a convolutional neural network-based deep learning was implemented to classify candidates into final Edi peaks. Our approach showed superior performance in all aspects of respiratory Edi peak detection and neural breathing analysis compared with the currently used recording technique in the ventilator. The method obtained a f1-score of 0.956 for the Edi peak detection performance and \documentclass[12pt]{minimal}
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\begin{document}$${R}^{2}$$\end{document}R2 value of 0.823 for respiratory rates based on the number of Edi peaks. The proposed technique can achieve a more reliable analysis of Edi signals, including evaluation of the respiration rate in premature infants.
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29
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Pettenuzzo T, Sella N, Zarantonello F, De Cassai A, Geraldini F, Persona P, Pistollato E, Boscolo A, Navalesi P. How to recognize patients at risk of self-inflicted lung injury. Expert Rev Respir Med 2022; 16:963-971. [PMID: 36154791 DOI: 10.1080/17476348.2022.2128335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Patient self-inflicted lung injury (P-SILI) has been proposed as a form of lung injury caused by strong inspiratory efforts consequent to a high respiratory drive in patients with hypoxemic acute respiratory failure (hARF). Increased respiratory drive and effort may lead to variable combinations of deleterious phenomena, such as excessive transpulmonary pressure, pendelluft, intra-tidal recruitment, local lung volutrauma, and pulmonary edema. Gas exchange and respiratory mechanics derangements further increase respiratory drive and effort, thus inducing a vicious circle. Forms of partial ventilatory support may further add to the detrimental effects of P-SILI. Since P-SILI may worsen patient outcome, strategies aimed at identifying and preventing P-SILI would be of great importance. AREAS COVERED We systematically searched Pubmed since inception until 15 April 2022 to review the patho-physiological mechanisms of P-SILI and the strategies to identify those patients at risk of P-SILI. EXPERT OPINION Although the concept of P-SILI has been increasingly supported by experimental and clinical data, no study has insofar demonstrated the efficacy of any strategy to identify it in the clinical setting. Further research is thus needed to ascertain the detrimental effects of spontaneous breathing and identify patients with hARF at high risk of developing P-SILI.
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Affiliation(s)
- Tommaso Pettenuzzo
- Department of Surgery, Institute of Anesthesiology and Intensive Care, Padua University Hospital, Padua, Italy
| | - Nicolò Sella
- Department of Surgery, Institute of Anesthesiology and Intensive Care, Padua University Hospital, Padua, Italy
| | - Francesco Zarantonello
- Department of Surgery, Institute of Anesthesiology and Intensive Care, Padua University Hospital, Padua, Italy
| | - Alessandro De Cassai
- Department of Surgery, Institute of Anesthesiology and Intensive Care, Padua University Hospital, Padua, Italy
| | - Federico Geraldini
- Department of Surgery, Institute of Anesthesiology and Intensive Care, Padua University Hospital, Padua, Italy
| | - Paolo Persona
- Department of Surgery, Institute of Anesthesiology and Intensive Care, Padua University Hospital, Padua, Italy
| | - Elisa Pistollato
- Department of Surgery, Institute of Anesthesiology and Intensive Care, Padua University Hospital, Padua, Italy.,Department of Medicine, University of Padua, Padua, Italy
| | - Annalisa Boscolo
- Department of Surgery, Institute of Anesthesiology and Intensive Care, Padua University Hospital, Padua, Italy
| | - Paolo Navalesi
- Department of Surgery, Institute of Anesthesiology and Intensive Care, Padua University Hospital, Padua, Italy.,Department of Medicine, University of Padua, Padua, Italy
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30
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Malone MP, Bennett E, Irby OK, Pasala S, Sanders RC, Spray BJ, Dalabih A. Perspectives on Current Mechanical Ventilation Use and Training in Pediatric Critical Care Medicine Fellowship Programs in the United States. J Pediatr Intensive Care 2022. [DOI: 10.1055/s-0042-1755442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Abstract
AbstractMechanical ventilation (MV) is an integral part of the care of the critically ill child, and contemporary MV includes a myriad of sophisticated modalities that should be tailored to specific disease pathology and severity. This requires Pediatric Critical Care Medicine (PCCM) physicians to have comprehensive training and experience with various modes. We sought to assess and describe the current landscape of MV practices and training from PCCM fellowship programs. To describe current MV practices and training in PCCM fellowship programs and assess the different modes of MV to which trainees are exposed, a piloted survey was sent to all 67 American PCCM fellowship program directors (PDs) in 2019. Forty-eight (71.6%) of PCCM PDs responded. Our survey shows that PCCM fellows are not uniformly exposed to the same MV modalities, and PDs' perception of fellows' competency in managing MV is variable. Our results suggest that there is a lack of exposure to the various modes of “conventional” MV, as well as inconsistent education about less-utilized “nonconventional” MV. Additionally, we found that PDs are aware of their fellows' limited exposure to various modalities, as many practice patterns are institution specific. This study identified gaps in MV education and training and advocates for PCCM fellowship programs to identify these deficiencies to equip all trainees with a solid knowledge base that will prepare them to utilize any mode of MV in their future practice.
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Affiliation(s)
- Matthew P. Malone
- Section of Critical Care Medicine, Department of Pediatrics, University of Arkansas for Medical Sciences/Arkansas Children's Hospital, Little Rock, Arkansas, United States
| | - Erin Bennett
- Section of Critical Care Medicine, Department of Pediatrics, University of Arkansas for Medical Sciences/Arkansas Children's Hospital, Little Rock, Arkansas, United States
| | - Olivia Katherine Irby
- Section of Critical Care Medicine, Department of Pediatrics, University of Arkansas for Medical Sciences/Arkansas Children's Hospital, Little Rock, Arkansas, United States
| | - Sanjiv Pasala
- Section of Critical Care Medicine, Department of Pediatrics, University of Arkansas for Medical Sciences/Arkansas Children's Hospital, Little Rock, Arkansas, United States
| | - Ronald C. Sanders
- Section of Critical Care Medicine, Department of Pediatrics, University of Arkansas for Medical Sciences/Arkansas Children's Hospital, Little Rock, Arkansas, United States
| | - Beverly J. Spray
- Arkansas Children's Research Institute, Little Rock, Arkansas, United States
| | - Abdallah Dalabih
- Section of Critical Care Medicine, Department of Pediatrics, University of Arkansas for Medical Sciences/Arkansas Children's Hospital, Little Rock, Arkansas, United States
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Biselli PJC, Degobbi Tenorio Quirino Dos Santos Lopes F, Righetti RF, Moriya HT, Tibério IFLC, Martins MA. Lung Mechanics Over the Century: From Bench to Bedside and Back to Bench. Front Physiol 2022; 13:817263. [PMID: 35910573 PMCID: PMC9326096 DOI: 10.3389/fphys.2022.817263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 06/17/2022] [Indexed: 11/13/2022] Open
Abstract
Lung physiology research advanced significantly over the last 100 years. Respiratory mechanics applied to animal models of lung disease extended the knowledge of the workings of respiratory system. In human research, a better understanding of respiratory mechanics has contributed to development of mechanical ventilators. In this review, we explore the use of respiratory mechanics in basic science to investigate asthma and chronic obstructive pulmonary disease (COPD). We also discuss the use of lung mechanics in clinical care and its role on the development of modern mechanical ventilators. Additionally, we analyse some bench-developed technologies that are not in widespread use in the present but can become part of the clinical arsenal in the future. Finally, we explore some of the difficult questions that intensive care doctors still face when managing respiratory failure. Bringing back these questions to bench can help to solve them. Interaction between basic and translational science and human subject investigation can be very rewarding, as in the conceptualization of “Lung Protective Ventilation” principles. We expect this interaction to expand further generating new treatments and managing strategies for patients with respiratory disease.
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Affiliation(s)
- Paolo Jose Cesare Biselli
- Intensive Care Unit, University Hospital, University of Sao Paulo, Sao Paulo, Brazil
- *Correspondence: Paolo Jose Cesare Biselli,
| | | | - Renato Fraga Righetti
- Laboratory of Experimental Therapeutics, Department of Clinical Medicine, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
- Hospital Sírio-Libanês, Serviço de Reabilitação, São Paulo, Brazil
| | - Henrique Takachi Moriya
- Biomedical Engineering Laboratory, Escola Politecnica, University of Sao Paulo, Sao Paulo, Brazil
| | - Iolanda Fátima Lopes Calvo Tibério
- Laboratory of Experimental Therapeutics, Department of Clinical Medicine, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Milton Arruda Martins
- Laboratory of Experimental Therapeutics, Department of Clinical Medicine, School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
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32
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Burns KEA, Agarwal A, Bosma KJ, Chaudhuri D, Girard TD. Liberation from Mechanical Ventilation: Established and New Insights. Semin Respir Crit Care Med 2022; 43:461-470. [PMID: 35760299 DOI: 10.1055/s-0042-1747929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A substantial proportion of critically ill patients require ventilator support with the majority requiring invasive mechanical ventilation. Timely and safe liberation from invasive mechanical ventilation is a critical aspect of patient care in the intensive care unit (ICU) and is a top research priority for patients and clinicians. In this article, we discuss how to (1) identify candidates for liberation from mechanical ventilation, (2) conduct spontaneous breathing trials (SBTs), and (3) optimize patients for liberation from mechanical ventilation. We also discuss the roles for (4) extubation to noninvasive ventilation and (5) newer modes of mechanical ventilation during liberation from mechanical ventilation. We conclude that, though substantial progress has been made in identifying patients who are likely to be liberated (e.g., through the use of SBTs) and management strategies that speed liberation from the ventilator (e.g., protocolized SBTs, lighter sedation, and early mobilization), many important questions regarding liberation from mechanical ventilation in clinical practice remain unanswered.
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Affiliation(s)
- Karen E A Burns
- Interdepartmental Division of Critical Care Medicine, Department of Medicine, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Departments of Critical Care and Medicine, Unity Health Toronto, St Michael's Hospital, Toronto, Ontario, Canada.,Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.,Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada
| | - Arnav Agarwal
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.,Division of General Internal Medicine, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Karen J Bosma
- Division of Critical Care Medicine, Department of Medicine, Schulich School of Medicine and Dentistry, Western University, and London Health Sciences Centre, London, Ontario, Canada
| | - Dipayan Chaudhuri
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.,Departments of Critical Care Medicine and Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Timothy D Girard
- The Clinical Research, Investigation, and Systems Modeling of Acute Illness (CRISMA) Center, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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Umbrello M, Antonucci E, Muttini S. Neurally Adjusted Ventilatory Assist in Acute Respiratory Failure-A Narrative Review. J Clin Med 2022; 11:jcm11071863. [PMID: 35407471 PMCID: PMC9000024 DOI: 10.3390/jcm11071863] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/10/2022] [Accepted: 03/25/2022] [Indexed: 02/08/2023] Open
Abstract
Maintaining spontaneous breathing has both potentially beneficial and deleterious consequences in patients with acute respiratory failure, depending on the balance that can be obtained between the protecting and damaging effects on the lungs and the diaphragm. Neurally adjusted ventilatory assist (NAVA) is an assist mode, which supplies the respiratory system with a pressure proportional to the integral of the electrical activity of the diaphragm. This proportional mode of ventilation has the theoretical potential to deliver lung- and respiratory-muscle-protective ventilation by preserving the physiologic defense mechanisms against both lung overdistention and ventilator overassistance, as well as reducing the incidence of diaphragm disuse atrophy while maintaining patient–ventilator synchrony. This narrative review presents an overview of NAVA technology, its basic principles, the different methods to set the assist level and the findings of experimental and clinical studies which focused on lung and diaphragm protection, machine–patient interaction and preservation of breathing pattern variability. A summary of the findings of the available clinical trials which investigate the use of NAVA in acute respiratory failure will also be presented and discussed.
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Wu M, Yuan X, Liu L, Yang Y. Neurally Adjusted Ventilatory Assist vs. Conventional Mechanical Ventilation in Adults and Children With Acute Respiratory Failure: A Systematic Review and Meta-Analysis. Front Med (Lausanne) 2022; 9:814245. [PMID: 35273975 PMCID: PMC8901502 DOI: 10.3389/fmed.2022.814245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 01/20/2022] [Indexed: 11/13/2022] Open
Abstract
Background Patient-ventilator asynchrony is a common problem in mechanical ventilation (MV), resulting in increased complications of MV. Despite there being some pieces of evidence for the efficacy of improving the synchronization of neurally adjusted ventilatory assist (NAVA), controversy over its physiological and clinical outcomes remain. Herein, we conducted a systematic review and meta-analysis to determine the relative impact of NAVA or conventional mechanical ventilation (CMV) modes on the important outcomes of adults and children with acute respiratory failure (ARF). Methods Qualified studies were searched in PubMed, EMBASE, Medline, Web of Science, Cochrane Library, and additional quality evaluations up to October 5, 2021. The primary outcome was asynchrony index (AI); secondary outcomes contained the duration of MV, intensive care unit (ICU) mortality, the incidence rate of ventilator-associated pneumonia, pH, and Partial Pressure of Carbon Dioxide in Arterial Blood (PaCO2). A statistical heterogeneity for the outcomes was assessed using the I 2 test. A data analysis of outcomes using odds ratio (OR) for ICU mortality and ventilator-associated pneumonia incidence and mean difference (MD) for AI, duration of MV, pH, and PaCO2, with 95% confidence interval (CI), was expressed. Results Eighteen eligible studies (n = 926 patients) were eventually enrolled. For the primary outcome, NAVA may reduce the AI (MD = -18.31; 95% CI, -24.38 to -12.25; p < 0.001). For the secondary outcomes, the duration of MV in the NAVA mode was 2.64 days lower than other CMVs (MD = -2.64; 95% CI, -4.88 to -0.41; P = 0.02), and NAVA may decrease the ICU mortality (OR =0.60; 95% CI, 0.42 to 0.86; P = 0.006). There was no statistically significant difference in the incidence of ventilator-associated pneumonia, pH, and PaCO2 between NAVA and other MV modes. Conclusions Our study suggests that NAVA ameliorates the synchronization of patient-ventilator and improves the important clinical outcomes of patients with ARF compared with CMV modes.
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Affiliation(s)
- Mengfan Wu
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Xueyan Yuan
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Ling Liu
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Yi Yang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
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35
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Pozzi M, Rezoagli E, Bronco A, Rabboni F, Grasselli G, Foti G, Bellani G. Accessory and Expiratory Muscles Activation During Spontaneous Breathing Trial: A Physiological Study by Surface Electromyography. Front Med (Lausanne) 2022; 9:814219. [PMID: 35372418 PMCID: PMC8965594 DOI: 10.3389/fmed.2022.814219] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 01/24/2022] [Indexed: 11/13/2022] Open
Abstract
Background The physiological and prognostical significance of accessory and expiratory muscles activation is unknown during a spontaneous breathing trial (SBT). We hypothesized that, in patients experiencing weaning failure, accessory and expiratory muscles are activated to cope with an increased respiratory workload. Purpose To describe accessory and expiratory muscle activation non-invasively by surface electromyography (sEMG) during an SBT and to assess differences in electrical activity (EA) of the inspiratory and expiratory muscles in successful vs. failing weaning patients. Methods Intubated patients on mechanical ventilation for more than 48 h undergoing an SBT were enrolled in a medical and surgical third-level ICU of the University Teaching Hospital. Baseline characteristics and physiological variables were recorded in a crossover physiologic prospective clinical study. Results Of 37 critically ill mechanically ventilated patients, 29 (78%) patients successfully passed the SBT. Rapid shallow breathing index (RSBI) was higher in patients who failed SBT compared with the successfully weaned patients at baseline and over time (group-by-time interaction p < 0.001). EA of both the diaphragm (EAdisurf) and of accessory muscles (ACCsurf) was higher in failure patients compared with success (group-by-time interaction p = 0.0174 and p < 0.001, respectively). EA of expiratory muscles (ESPsurf) during SBT increased more in failure than in weaned patients (group-by-time interaction p < 0.0001). Conclusion Non-invasive respiratory muscle monitoring by sEMG was feasible during SBT. Respiratory muscles EA increased during SBT, regardless of SBT outcome, and patients who failed the SBT had a higher increase of all the inspiratory muscles EA compared with the patients who passed the SBT. Recruitment of expiratory muscles—as quantified by sEMG—is associated with SBT failure.
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Affiliation(s)
- Matteo Pozzi
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Department of Emergency and Intensive Care, San Gerardo Hospital, Monza, Italy
| | - Emanuele Rezoagli
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Alfio Bronco
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Department of Emergency and Intensive Care, San Gerardo Hospital, Monza, Italy
| | - Francesca Rabboni
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Giacomo Grasselli
- Department of Anesthesia, Intensive Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Giuseppe Foti
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Department of Emergency and Intensive Care, San Gerardo Hospital, Monza, Italy
| | - Giacomo Bellani
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Department of Emergency and Intensive Care, San Gerardo Hospital, Monza, Italy
- *Correspondence: Giacomo Bellani
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36
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Ranieri VM, Guérin C. The physiological foundations of critical care medicine: the contribution of Joseph Milic-Emili, a physiologist "by hook or by crook". CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2022. [PMID: 35135611 PMCID: PMC8822682 DOI: 10.1186/s13054-022-03919-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- V Marco Ranieri
- Department of Emergency and Intensive Care Medicine, Alma Mater Studiorum University of Bologna, IRCCS Policlinico di Sant'Orsola, Bologna, Italy
| | - Claude Guérin
- Service de Médecine Intensive-Réanimation, Hôpital Edouard Herriot, 5 Place d'Arsonval, 69003, Lyon, France. .,Université de Lyon, Lyon, France. .,Institut Mondor de Recherche Biomédicales INSERM 955, Créteil, France.
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37
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Sindelar R, Nakanishi H, Stanford AH, Colaizy TT, Klein JM. Respiratory management for extremely premature infants born at 22 to 23 weeks of gestation in proactive centers in Sweden, Japan, and USA. Semin Perinatol 2022; 46:151540. [PMID: 34872750 DOI: 10.1016/j.semperi.2021.151540] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Survival of preterm newborn infants have increased steadily since the introduction of surfactant treatment and antenatal steroids. In the absence of randomized controlled trials on ventilatory strategies in extremely preterm infants, we present ventilatory strategies applied during the initial phase and the continued ventilatory care as applied in three centers with proactive prenatal and postnatal management and well documented good outcomes in terms of mortality and morbidity in this cohort of infants.
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Affiliation(s)
- Richard Sindelar
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden.
| | - Hidehiko Nakanishi
- Research and Development Center for New Medical Frontiers, Division of Neonatal Intensive Care Medicine, Kitasato University School of Medicine, Kanagawa, Japan
| | - Amy H Stanford
- Division of Neonatology, Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Tarah T Colaizy
- Division of Neonatology, Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Jonathan M Klein
- Division of Neonatology, Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA, USA
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38
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Dagle JM, Rysavy MA, Hunter SK, Colaizy TT, Elgin TG, Giesinger RE, McElroy SJ, Harmon HM, Klein JM, McNamara PJ, Segar JL, Thomas BA, Bischoff AR, Rios DR, Lindower JB, Bermick JR, Lee SS, Wong SW, Roghair RD, Morgan-Harris AT, Niwas R, Arikat S, Boly TJ, Segar JL. Cardiorespiratory management of infants born at 22 weeks' gestation: The Iowa approach. Semin Perinatol 2022; 46:151545. [PMID: 34893337 DOI: 10.1016/j.semperi.2021.151545] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The approach to clinical care of infants born at 22 weeks' gestation must be consistent and well-designed if optimal results are to be expected. Publications from several international centers have demonstrated that, although there may be variance in aspects of care in this vulnerable population, treatment should be neither random nor inconsistent. In designing a standardized approach, careful attention should be paid to the unique anatomy, physiology, and biochemistry of this vulnerable patient population. Emerging evidence, suggesting a link between cardiopulmonary health and longer-term sequela, highlights the importance of understanding the relationship between cardiorespiratory illnesses of the 22-week infant, treatments provided, and subsequent cardiopulmonary development. In this review we will provide an overview to our approach to cardiopulmonary assessment and treatment, with a particular emphasis on the importance of early recognition of atypical phenotypes, timely interventions with evidence-based treatments, and longitudinal monitoring.
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Affiliation(s)
- John M Dagle
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital, Biochemistry, and Epidemiology, University of Iowa, USA.
| | - Matthew A Rysavy
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital, Biochemistry, and Epidemiology, University of Iowa, USA
| | | | - Tarah T Colaizy
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital, Biochemistry, and Epidemiology, University of Iowa, USA
| | - Timothy G Elgin
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital, Biochemistry, and Epidemiology, University of Iowa, USA
| | - Regan E Giesinger
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital, Biochemistry, and Epidemiology, University of Iowa, USA
| | - Steve J McElroy
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital, Biochemistry, and Epidemiology, University of Iowa, USA
| | - Heidi M Harmon
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital, Biochemistry, and Epidemiology, University of Iowa, USA
| | - Jonathan M Klein
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital, Biochemistry, and Epidemiology, University of Iowa, USA
| | - Patrick J McNamara
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital, Biochemistry, and Epidemiology, University of Iowa, USA; Obstetrics and Gynecology and Internal Medicine, USA; University of Iowa, Iowa City, IA, USA
| | | | | | - Brady A Thomas
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Adrianne R Bischoff
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Danielle R Rios
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Julie B Lindower
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Jennifer R Bermick
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Stephanie S Lee
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Samuel W Wong
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Robert D Roghair
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Ana Tracey Morgan-Harris
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Ram Niwas
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Sunny Arikat
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Timothy J Boly
- Stead Family Division of Neonatology and Departments of Pediatrics, Staff Neonatologist, Stead Family Children's Hospital,Biochemistry, and Epidemiology, University of Iowa, USA
| | - Jeffrey L Segar
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA
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Takahashi D, Beck J, Goto K, Sinderby C. Spontaneous breathing during high-frequency oscillation revealed by diaphragm electrical activity. Pediatr Neonatol 2022; 63:99-100. [PMID: 34535430 DOI: 10.1016/j.pedneo.2021.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/30/2021] [Accepted: 08/18/2021] [Indexed: 11/25/2022] Open
Affiliation(s)
- Daijiro Takahashi
- Division of Neonatology, Fukuda Hospital, 2-2-6, Shinmachi, Chuou-ku, Kumamoto-city, Kumamoto, 860-0004, Japan; Division of Pediatrics, Fukuda Hospital, 2-2-6, Shinmachi, Chuou-ku, Kumamoto-city, Kumamoto, 860-0004, Japan.
| | - Jennifer Beck
- Keenan Research Centre for Biomedical Science and Department of Critical Care Medicine, St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B1W8, Canada; Department of Pediatrics, University of Toronto, Toronto, Canada
| | - Kei Goto
- Division of Pediatrics, Fukuda Hospital, 2-2-6, Shinmachi, Chuou-ku, Kumamoto-city, Kumamoto, 860-0004, Japan
| | - Christer Sinderby
- Keenan Research Centre for Biomedical Science and Department of Critical Care Medicine, St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B1W8, Canada; Department of Medicine, University of Toronto, Toronto, Canada
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40
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Widing H, Chiodaroli E, Liggieri F, Mariotti PS, Hallén K, Perchiazzi G. Homogenizing effect of PEEP on tidal volume distribution during neurally adjusted ventilatory assist: study of an animal model of acute respiratory distress syndrome. Respir Res 2022; 23:324. [PMID: 36419132 PMCID: PMC9685871 DOI: 10.1186/s12931-022-02228-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/26/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND The physiological response and the potentially beneficial effects of positive end-expiratory pressure (PEEP) for lung protection and optimization of ventilation during spontaneous breathing in patients with acute respiratory distress syndrome (ARDS) are not fully understood. The aim of the study was to compare the effect of different PEEP levels on tidal volume distribution and on the ventilation of dependent lung region during neurally adjusted ventilatory assist (NAVA). METHODS ARDS-like lung injury was induced by using saline lavage in 10 anesthetized and spontaneously breathing farm-bred pigs. The animals were ventilated in NAVA modality and tidal volume distribution as well as dependent lung ventilation were assessed using electric impedance tomography during the application of PEEP levels from 0 to 15 cmH20, in steps of 3 cmH20. Tidal volume distribution and dependent fraction of ventilation were analysed using Wilcoxon signed rank test. Furthermore, airway, esophageal and transpulmonary pressure, as well as airway flow and delivered volume, were continuously measured during the assisted spontaneous breathing. RESULTS Increasing PEEP improved oxygenation and re-distributed tidal volume. Specifically, ventilation distribution changed from a predominant non-dependent to a more even distribution between non-dependent and dependent areas of the lung. Dependent fraction of ventilation reached 47 ± 9% at PEEP 9 cmH20. Further increasing PEEP led to a predominant dependent ventilation. CONCLUSION During assisted spontaneous breathing in this model of induced ARDS, PEEP modifies the distribution of ventilation and can achieve a homogenizing effect on its spatial arrangement. The study indicates that PEEP is an important factor during assisted spontaneous breathing and that EIT can be of valuable interest when titrating PEEP level during spontaneous breathing, by indicating the most homogeneous distribution of gas volumes throughout the PEEP spectrum.
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Affiliation(s)
- Hannes Widing
- grid.8993.b0000 0004 1936 9457Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Akademiska Sjukhuset, Ing 40, 3 Tr, 751 85 Uppsala, Sweden ,grid.1649.a000000009445082XDepartment of Anaesthesiology and Intensive Care Medicine, Region Västra Götaland, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden
| | - Elena Chiodaroli
- grid.8993.b0000 0004 1936 9457Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Akademiska Sjukhuset, Ing 40, 3 Tr, 751 85 Uppsala, Sweden ,grid.415093.a0000 0004 1793 3800Department of Anesthesia and Intensive Care, ASST Santi Paolo e Carlo, San Paolo University Hospital, Via Di Rudinì 8, Milan, Italy
| | - Francesco Liggieri
- grid.8993.b0000 0004 1936 9457Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Akademiska Sjukhuset, Ing 40, 3 Tr, 751 85 Uppsala, Sweden ,Division of Anesthesia and Intensive Care, San Martino Policlinic University Hospital, 16132 Genoa, Italy
| | - Paola Sara Mariotti
- grid.8993.b0000 0004 1936 9457Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Akademiska Sjukhuset, Ing 40, 3 Tr, 751 85 Uppsala, Sweden ,grid.10796.390000000121049995Department of Medical and Surgical Sciences, Anesthesia and Intensive Care Unit, University of Foggia, Foggia, Italy
| | - Katarina Hallén
- grid.1649.a000000009445082XDepartment of Anaesthesiology and Intensive Care Medicine, Region Västra Götaland, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden
| | - Gaetano Perchiazzi
- grid.8993.b0000 0004 1936 9457Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Akademiska Sjukhuset, Ing 40, 3 Tr, 751 85 Uppsala, Sweden ,grid.412354.50000 0001 2351 3333Department of Anesthesia, Operation and Intensive Care, Uppsala University Hospital, Uppsala, Sweden
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The physiological underpinnings of life-saving respiratory support. Intensive Care Med 2022; 48:1274-1286. [PMID: 35690953 PMCID: PMC9188674 DOI: 10.1007/s00134-022-06749-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 05/16/2022] [Indexed: 02/04/2023]
Abstract
Treatment of respiratory failure has improved dramatically since the polio epidemic in the 1950s with the use of invasive techniques for respiratory support: mechanical ventilation and extracorporeal respiratory support. However, respiratory support is only a supportive therapy, designed to "buy time" while the disease causing respiratory failure abates. It ensures viable gas exchange and prevents cardiorespiratory collapse in the context of excessive loads. Because the use of invasive modalities of respiratory support is also associated with substantial harm, it remains the responsibility of the clinician to minimize such hazards. Direct iatrogenic consequences of mechanical ventilation include the risk to the lung (ventilator-induced lung injury) and the diaphragm (ventilator-induced diaphragm dysfunction and other forms of myotrauma). Adverse consequences on hemodynamics can also be significant. Indirect consequences (e.g., immobilization, sleep disruption) can have devastating long-term effects. Increasing awareness and understanding of these mechanisms of injury has led to a change in the philosophy of care with a shift from aiming to normalize gases toward minimizing harm. Lung (and more recently also diaphragm) protective ventilation strategies include the use of extracorporeal respiratory support when the risk of ventilation becomes excessive. This review provides an overview of the historical background of respiratory support, pathophysiology of respiratory failure and rationale for respiratory support, iatrogenic consequences from mechanical ventilation, specifics of the implementation of mechanical ventilation, and role of extracorporeal respiratory support. It highlights the need for appropriate monitoring to estimate risks and to individualize ventilation and sedation to provide safe respiratory support to each patient.
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Graßhoff J, Petersen E, Farquharson F, Kustermann M, Kabitz HJ, Rostalski P, Walterspacher S. Surface EMG-based quantification of inspiratory effort: a quantitative comparison with P es. Crit Care 2021; 25:441. [PMID: 34930396 PMCID: PMC8686581 DOI: 10.1186/s13054-021-03833-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 11/19/2021] [Indexed: 11/26/2022] Open
Abstract
Background Inspiratory patient effort under assisted mechanical ventilation is an important quantity for assessing patient–ventilator interaction and recognizing over and under assistance. An established clinical standard is respiratory muscle pressure \documentclass[12pt]{minimal}
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\begin{document}$$\textit{P}_{\mathrm{mus}}$$\end{document}Pmus, derived from esophageal pressure (\documentclass[12pt]{minimal}
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\begin{document}$$\textit{P}_{\mathrm{es}}$$\end{document}Pes), which requires the correct placement and calibration of an esophageal balloon catheter. Surface electromyography (sEMG) of the respiratory muscles represents a promising and straightforward alternative technique, enabling non-invasive monitoring of patient activity. Methods A prospective observational study was conducted with patients under assisted mechanical ventilation, who were scheduled for elective bronchoscopy. Airway flow and pressure, esophageal/gastric pressures and sEMG of the diaphragm and intercostal muscles were recorded at four levels of pressure support ventilation. Patient efforts were quantified via the \documentclass[12pt]{minimal}
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\begin{document}$$\textit{P}_{\mathrm{mus}}$$\end{document}Pmus-time product (\documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{PTP}}_{\mathrm{mus}}$$\end{document}PTPmus), the transdiaphragmatic pressure-time product (\documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{PTP}}_{\mathrm{di}}$$\end{document}PTPdi) and the EMG-time products (ETP) of the two sEMG channels. To improve the signal-to-noise ratio, a method for automatically selecting the more informative of the sEMG channels was investigated. Correlation between ETP and \documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{PTP}}_{\mathrm{mus}}$$\end{document}PTPmus was assessed by determining a neuromechanical conversion factor \documentclass[12pt]{minimal}
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\begin{document}$$\textit{K}_{\mathrm{EMG}}$$\end{document}KEMG between the two quantities. Moreover, it was investigated whether this scalar can be reliably determined from airway pressure during occlusion maneuvers, thus allowing to quantify inspiratory effort based solely on sEMG measurements. Results In total, 62 patients with heterogeneous pulmonary diseases were enrolled in the study, 43 of which were included in the data analysis. The ETP of the two sEMG channels was well correlated with \documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{PTP}}_{\mathrm{mus}}$$\end{document}PTPmus (\documentclass[12pt]{minimal}
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\begin{document}$$\textit{r}={0.79\pm 0.25}$$\end{document}r=0.79±0.25 and \documentclass[12pt]{minimal}
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\begin{document}$$\textit{r}={0.84\pm 0.16}$$\end{document}r=0.84±0.16 for diaphragm and intercostal recordings, respectively). The proposed automatic channel selection method improved correlation with \documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{PTP}}_{\mathrm{mus}}$$\end{document}PTPmus (\documentclass[12pt]{minimal}
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\begin{document}$$\textit{r}={0.87\pm 0.09}$$\end{document}r=0.87±0.09). The neuromechanical conversion factor obtained by fitting ETP to \documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{PTP}}_{\mathrm{mus}}$$\end{document}PTPmus varied widely between patients (\documentclass[12pt]{minimal}
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\begin{document}$$\textit{K}_{\mathrm{EMG}}= {4.32\pm 3.73}\,{\hbox {cm}\hbox {H}_{2}\hbox {O}/\upmu \hbox {V}}$$\end{document}KEMG=4.32±3.73cm2O/μV) and was highly correlated with the scalar determined during occlusions (\documentclass[12pt]{minimal}
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\begin{document}$$\textit{r}={0.95}$$\end{document}r=0.95, \documentclass[12pt]{minimal}
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\begin{document}$$\textit{p}<{.001}$$\end{document}p<.001). The occlusion-based method for deriving \documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{PTP}}_{\mathrm{mus}}$$\end{document}PTPmus from ETP showed a breath-wise deviation to \documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{PTP}}_{\mathrm{mus}}$$\end{document}PTPmus of \documentclass[12pt]{minimal}
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\begin{document}$${0.43\pm 1.73}\,{\hbox {cm}\hbox {H}_{2}\hbox {O}\,\hbox {s}}$$\end{document}0.43±1.73cm2Os across all datasets. Conclusion These results support the use of surface electromyography as a non-invasive alternative for monitoring breath-by-breath inspiratory effort of patients under assisted mechanical ventilation. Supplementary Information The online version contains supplementary material available at 10.1186/s13054-021-03833-w.
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Affiliation(s)
- Jan Graßhoff
- Institute for Electrical Engineering in Medicine, Universität zu Lübeck, Moislinger Allee 53-55, 23558, Lübeck, Germany. .,Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering, Mönkhofer Weg 239 a, 23562, Lübeck, Germany.
| | - Eike Petersen
- Institute for Electrical Engineering in Medicine, Universität zu Lübeck, Moislinger Allee 53-55, 23558, Lübeck, Germany
| | | | - Max Kustermann
- Medical Clinic II, Klinikum Konstanz, Mainaustraße 35, 78464, Konstanz, Germany
| | - Hans-Joachim Kabitz
- Medical Clinic II, Klinikum Konstanz, Mainaustraße 35, 78464, Konstanz, Germany
| | - Philipp Rostalski
- Institute for Electrical Engineering in Medicine, Universität zu Lübeck, Moislinger Allee 53-55, 23558, Lübeck, Germany.,Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering, Mönkhofer Weg 239 a, 23562, Lübeck, Germany
| | - Stephan Walterspacher
- Medical Clinic II, Klinikum Konstanz, Mainaustraße 35, 78464, Konstanz, Germany.,Faculty of Health/School of Medicine, Witten/Herdecke University, Alfred-Herrhausen-Straße 50, 58455, Witten, Germany
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Abstract
Patient-ventilator asynchrony is very common in newborns. Achieving synchrony is quite challenging because of small tidal volumes, high respiratory rates, and the presence of leaks. Leaks also cause unreliable monitoring of respiratory metrics. In addition, ventilator adjustment must take into account that infants have strong vagal reflexes and demonstrate central apnea and periodic breathing, with a high variability in breathing pattern. Neurally adjusted ventilatory assist (NAVA) is a mode of ventilation whereby the timing and amount of ventilatory assist is controlled by the patient's own neural respiratory drive. As NAVA uses the diaphragm electrical activity (Edi) as the controller signal, it is possible to deliver synchronized assist, both invasively and noninvasively (NIV-NAVA), to follow the variability in breathing pattern, and to monitor patient respiratory drive, independent of leaks. This article provides an updated review of the physiology and the scientific literature pertaining to the use of NAVA in children (neonatal and pediatric age groups). Both the invasive NAVA and NIV-NAVA publications since 2016 are summarized, as well as the use of Edi monitoring. Overall, the use of NAVA and Edi monitoring is feasible and safe. Compared with conventional ventilation, NAVA improves patient-ventilator interaction, provides lower peak inspiratory pressure, and lowers oxygen requirements. Evidence from several studies suggests improved comfort, less sedation requirements, less apnea, and some trends toward reduced length of stay and more successful extubation.
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Affiliation(s)
- Jennifer Beck
- Department of Critical Care, St. Michael's Hospital, 30 Bond Street, Toronto, Ontario M5B1W8, Canada; Department of Pediatrics, University of Toronto, Toronto, Canada; Institute for Biomedical Engineering and Science Technology (iBEST) at Ryerson University and St-Michael's Hospital, Toronto, Canada.
| | - Christer Sinderby
- Department of Critical Care, St. Michael's Hospital, 30 Bond Street, Toronto, Ontario M5B1W8, Canada; Institute for Biomedical Engineering and Science Technology (iBEST) at Ryerson University and St-Michael's Hospital, Toronto, Canada; Department of Medicine and Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
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Oda A, Parikka V, Lehtonen L, Azimi S, Porres I, Soukka H. Neurally adjusted ventilatory assist in ventilated very preterm infants: A crossover study. Pediatr Pulmonol 2021; 56:3857-3862. [PMID: 34437773 DOI: 10.1002/ppul.25639] [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: 05/05/2021] [Revised: 08/03/2021] [Accepted: 08/19/2021] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To assess the effects of neurally adjusted ventilatory assist (NAVA) ventilation on oxygenation and respiratory parameters in preterm infants. STUDY DESIGN An observational crossover study with a convenience sample of 19 infants born before 30 gestational weeks. Study parameters were recorded during 3-h periods of both NAVA and conventional ventilation. The proportion of time peripheral oxygen saturation (SpO2 ) and cerebral regional oxygen saturation (cRSO2 ) were within their target ranges, plus the number and severity of desaturation episodes were analyzed. In addition, electrical activity of the diaphragm (Edi), neural respiratory rates, and peak inspiratory pressures (PIPs) were recorded. RESULTS Infants were born at a median age of 264/7 gestational weeks (range: 230/7 -293/7 ); the study was performed at a median age of 20 days (range: 1-82). The proportion of time SpO2 was within the target range, the number of peripheral desaturations or cRSO2 did not differ between the modes. However, the desaturation severity index was lower (131 vs. 152; p = .03) and fewer manual supplemental oxygen adjustments (1.3 vs. 2.2/h; p = .006) were needed during the period of NAVA ventilation following conventional ventilation. The mean Edi (8.1 vs. 11.4 µV; p < .006) and PIP values (14.9 vs. 19.1; p < .001) were lower during the NAVA mode. CONCLUSIONS Although NAVA ventilation did not increase the proportion of time with optimal saturation, it was associated with decreased diaphragmatic activity, lower PIPs, less severe hypoxemic events, and fewer manual oxygen adjustments in very preterm infants.
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Affiliation(s)
- Arata Oda
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital, Turku, Finland
| | - Vilhelmiina Parikka
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital, Turku, Finland.,Department of Clinical Medicine, University of Turku, Turku, Finland
| | - Liisa Lehtonen
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital, Turku, Finland.,Department of Clinical Medicine, University of Turku, Turku, Finland
| | - Sepinoud Azimi
- Department of Information Technology, Faculty of Natural Sciences and Technology, Åbo Akademi University, Turku, Finland
| | - Ivan Porres
- Department of Information Technology, Faculty of Natural Sciences and Technology, Åbo Akademi University, Turku, Finland
| | - Hanna Soukka
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital, Turku, Finland.,Department of Clinical Medicine, University of Turku, Turku, Finland
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Lee J, Parikka V, Lehtonen L, Soukka H. Backup ventilation during neurally adjusted ventilatory assist in preterm infants. Pediatr Pulmonol 2021; 56:3342-3348. [PMID: 34310871 DOI: 10.1002/ppul.25583] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/30/2021] [Accepted: 07/14/2021] [Indexed: 11/07/2022]
Abstract
OBJECTIVE To analyze the proportion of backup ventilation during neurally adjusted ventilatory assist (NAVA) in preterm infants at different postmenstrual ages (PMAs) and to analyze the trends in backup ventilation in relation to clinical deteriorations. METHODS A prospective observational study was conducted in 18 preterm infants born at a median (range) 27+4 (23+4 -34+4 ) weeks of gestation with a median (range) birth weight of 1,100 (460-2,820) g, who received respiratory support with either invasive or noninvasive NAVA. Data on ventilator settings and respiratory variables were collected daily; the mean values of each 24-h recording were computed for each respiratory variable. For clinical deterioration, ventilator data were reviewed at 6-h intervals for 30 h before the event. RESULTS A total of 354 patient days were included: 269 and 85 days during invasive and noninvasive NAVA, respectively. The time on backup ventilation (%/min) significantly decreased with increasing PMA during both invasive and noninvasive NAVA. The neural respiratory rate did not change over time. The median time on backup ventilation was less than 15%/min, and the median neural respiratory rate was more than 45 breaths/min for infants above 26+0 weeks PMA during invasive NAVA. The relative backup ventilation significantly increased before the episode of clinical deterioration. CONCLUSION The proportion of backup ventilation during NAVA showed how the control of breathing matured with increasing PMA. Even the most immature infants triggered most of their breaths by their own respiratory effort. An acute increase in the proportion of backup ventilation anticipated clinical deterioration.
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Affiliation(s)
- Juyoung Lee
- Department of Pediatrics, Inha University Hospital, Incheon, South Korea
- Department of Pediatrics, Inha University College of Medicine, Incheon, South Korea
| | - Vilhelmiina Parikka
- Department of Pediatrics, Turku University Hospital, Turku, Finland
- Department of Pediatrics, University of Turku, Turku, Finland
| | - Liisa Lehtonen
- Department of Pediatrics, Turku University Hospital, Turku, Finland
- Department of Pediatrics, University of Turku, Turku, Finland
| | - Hanna Soukka
- Department of Pediatrics, Turku University Hospital, Turku, Finland
- Department of Pediatrics, University of Turku, Turku, Finland
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Miller AG, Bartle RM, Feldman A, Mallory P, Reyes E, Scott B, Rotta AT. A narrative review of advanced ventilator modes in the pediatric intensive care unit. Transl Pediatr 2021; 10:2700-2719. [PMID: 34765495 PMCID: PMC8578787 DOI: 10.21037/tp-20-332] [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: 10/13/2020] [Accepted: 11/26/2020] [Indexed: 01/29/2023] Open
Abstract
Respiratory failure is a common reason for pediatric intensive care unit admission. The vast majority of children requiring mechanical ventilation can be supported with conventional mechanical ventilation (CMV) but certain cases with refractory hypoxemia or hypercapnia may require more advanced modes of ventilation. This paper discusses what we have learned about the use of advanced ventilator modes [e.g., high-frequency oscillatory ventilation (HFOV), high-frequency percussive ventilation (HFPV), high-frequency jet ventilation (HFJV) airway pressure release ventilation (APRV), and neurally adjusted ventilatory assist (NAVA)] from clinical, animal, and bench studies. The evidence supporting advanced ventilator modes is weak and consists of largely of single center case series, although a few RCTs have been performed. Animal and bench models illustrate the complexities of different modes and the challenges of applying these clinically. Some modes are proprietary to certain ventilators, are expensive, or may only be available at well-resourced centers. Future efforts should include large, multicenter observational, interventional, or adaptive design trials of different rescue modes (e.g., PROSpect trial), evaluate their use during ECMO, and should incorporate assessments through volumetric capnography, electric impedance tomography, and transpulmonary pressure measurements, along with precise reporting of ventilator parameters and physiologic variables.
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Affiliation(s)
- Andrew G Miller
- Duke University Medical Center, Durham, NC, USA.,Respiratory Care Services, Duke University Medical Center, Durham, NC, USA
| | - Renee M Bartle
- Duke University Medical Center, Durham, NC, USA.,Respiratory Care Services, Duke University Medical Center, Durham, NC, USA
| | - Alexandra Feldman
- Duke University Medical Center, Durham, NC, USA.,Division of Pediatric Critical Care Medicine, Duke University Medical Center, Durham, NC, USA
| | - Palen Mallory
- Duke University Medical Center, Durham, NC, USA.,Division of Pediatric Critical Care Medicine, Duke University Medical Center, Durham, NC, USA
| | - Edith Reyes
- Duke University Medical Center, Durham, NC, USA.,Division of Pediatric Critical Care Medicine, Duke University Medical Center, Durham, NC, USA
| | - Briana Scott
- Duke University Medical Center, Durham, NC, USA.,Division of Pediatric Critical Care Medicine, Duke University Medical Center, Durham, NC, USA
| | - Alexandre T Rotta
- Duke University Medical Center, Durham, NC, USA.,Division of Pediatric Critical Care Medicine, Duke University Medical Center, Durham, NC, USA
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Xiao S, Huang C, Cheng Y, Xia Z, Li Y, Tang W, Shi B, Wang L, Shu X, Jiang Y, Qin C, Xu H. Application of neurally adjusted ventilatory assist in ventilator weaning of infants ventilator weaning. Brain Behav 2021; 11:e2350. [PMID: 34520632 PMCID: PMC8553316 DOI: 10.1002/brb3.2350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/18/2021] [Accepted: 08/22/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND To analyze the application of neurally adjusted ventilatory assist in ventilator weaning of infants. METHODS A total of 25 infants (15 boys and 10 girls) who were mechanically ventilated by PICU in Hubei Maternal and Child Health Hospital were selected as the study subjects. After the improvement of the basic disease, regular spontaneous breathing, and the withdrawal of the ventilator, all the children obtained the electrical activity of the diaphragm (EAdi) signal. Then, each child was given CPAP and NAVA mode mechanical ventilation 1 h before the withdrawal of the ventilator. Each detection index was recorded 30 min after each mode of ventilation. RESULTS Two of the 25 children were tracheotomized because of respiratory muscle weakness and could not be converted to NAVA mode without the EAdi signal. Hemodynamic indexes were not statistically different between the two groups of CPAP and NAVA. PaCO2 is not significantly different in the two modes, and both were at normal levels. The PIP in NAVA mode is lower than that in CPAP mode (p < .05), and its EAdi signal was correspondingly low. There were significant differences in the peak pressure (Ppeak), mean pressure (Pmean), and compliance and mean arterial pressure (p < .01) between the CPAP and NAVA model ventilation in 23 patients. CONCLUSION NAVA can significantly improve the coordination of patients. The therapeutic effect of NAVA was better, which was beneficial to the prognosis of patients and had positive application value in the withdrawal of ventilators in patients.
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Affiliation(s)
- Shuna Xiao
- Department of Pediatric Critical Medicine, Maternal and Child Health Care Hospital of Hubei Province, Wuhan, China
| | - Chengjiao Huang
- Department of Pediatric Critical Medicine, Maternal and Child Health Care Hospital of Hubei Province, Wuhan, China
| | - Ying Cheng
- Department of Pediatric Critical Medicine, Maternal and Child Health Care Hospital of Hubei Province, Wuhan, China
| | - Zhi Xia
- Department of Pediatric Critical Medicine, Maternal and Child Health Care Hospital of Hubei Province, Wuhan, China
| | - Yong Li
- Department of Pediatric Critical Medicine, Maternal and Child Health Care Hospital of Hubei Province, Wuhan, China
| | - Wen Tang
- Department of Pediatric Critical Medicine, Maternal and Child Health Care Hospital of Hubei Province, Wuhan, China
| | - Buyun Shi
- Department of Pediatric Critical Medicine, Maternal and Child Health Care Hospital of Hubei Province, Wuhan, China
| | - Lijun Wang
- Department of Cardiac Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiaolan Shu
- Department of Pediatric Critical Medicine, Maternal and Child Health Care Hospital of Hubei Province, Wuhan, China
| | - Ying Jiang
- Department of Pediatric Critical Medicine, Maternal and Child Health Care Hospital of Hubei Province, Wuhan, China
| | - Chenguang Qin
- Department of Pediatric Critical Medicine, Maternal and Child Health Care Hospital of Hubei Province, Wuhan, China
| | - Hui Xu
- Department of Pediatric Critical Medicine, Maternal and Child Health Care Hospital of Hubei Province, Wuhan, China
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Harris J, Tibby SM, Endacott R, Latour JM. Neurally Adjusted Ventilator Assist in Infants With Acute Respiratory Failure: A Literature Scoping Review. Pediatr Crit Care Med 2021; 22:915-924. [PMID: 33852545 DOI: 10.1097/pcc.0000000000002727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To map the evidence for neurally adjusted ventilatory assist strategies, outcome measures, and sedation practices in infants less than 12 months with acute respiratory failure using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews guidance. DATA SOURCES CINAHL, MEDLINE, COCHRANE, JBI, EMBASE, PsycINFO, Google scholar, BNI, AMED. Trial registers included the following: ClinicalTrials.gov, European Union clinical trials register, International Standardized Randomized Controlled Trial Number register. Also included were Ethos, Grey literature, Google, dissertation abstracts, EMBASE conference proceedings. STUDY SELECTION Abstracts were screened followed by review of full text. Articles incorporating a heterogeneous population of both infants and older children were assessed, and where possible, data for infants were extracted. Fifteen articles were included. Ten articles were primary research: randomized controlled trial (n = 3), cohort studies (n = 4), retrospective data analysis (n = 2), case series (n = 1). Other articles are expert opinion (n = 2), neurally adjusted ventilatory assist updates (n = 1), and a literature review (n = 2). Three studies included exclusively infants. We also included 12 studies reporting jointly on infants and children. DATA EXTRACTION A standardized data extraction tool was used. DATA SYNTHESIS Key findings were that evidence related to neurally adjusted ventilatory assist ventilation strategies in infants and related to specific primary conditions is limited. The setting of neurally adjusted ventilatory assist level is not consistent, and how to optimize this mode of ventilation was not documented. Outcome measures varied considerably, most studies focused on improvements in respiratory and physiological variables. Sedation use is variable with regard to medication type and dose. There is an indication that less sedation is required in patients receiving neurally adjusted ventilatory assist, but no conclusive evidence to support this. CONCLUSIONS This review highlights a lack of standardized strategies for neurally adjusted ventilatory assist ventilation and sedation practices among infants with acute respiratory failure. Studies were limited by small sample sizes and a lack of focus on specific patient groups. Robust studies are needed to provide evidence-based clinical recommendations for the use of neurally adjusted ventilatory assist in infants with acute respiratory failure.
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Affiliation(s)
- Julia Harris
- Department of Advanced and Integrated Practice, London South Bank University, London, United Kingdom
- Department of Children's Nursing, School of Nursing and Midwifery, Faculty of Health: Medicine, Dentistry and Human Sciences, University of Plymouth, Plymouth, United Kingdom
| | - Shane M Tibby
- Pediatric Intensive Care, Evelina London Children's Hospital, London, United Kingdom
| | - Ruth Endacott
- Department of Children's Nursing, School of Nursing and Midwifery, Faculty of Health: Medicine, Dentistry and Human Sciences, University of Plymouth, Plymouth, United Kingdom
- School of Nursing and Midwifery, Faculty of Medicine, Nursing and Health Sciences, Monash University, Frankston, VIC, Australia
| | - Jos M Latour
- Department of Children's Nursing, School of Nursing and Midwifery, Faculty of Health: Medicine, Dentistry and Human Sciences, University of Plymouth, Plymouth, United Kingdom
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Effects of heliox and non-invasive neurally adjusted ventilatory assist (NIV-NAVA) in preterm infants. Sci Rep 2021; 11:15778. [PMID: 34349223 PMCID: PMC8338984 DOI: 10.1038/s41598-021-95444-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 07/23/2021] [Indexed: 12/02/2022] Open
Abstract
Due to its unique properties, helium–oxygen (heliox) mixtures may provide benefits during non-invasive ventilation, however, knowledge regarding the effects of such therapy in premature infants is limited. This is the first report of heliox non-invasive neurally adjusted ventilatory assist (NIV-NAVA) ventilation applied in neonates born ≤ 32 weeks gestational age. After baseline NIV-NAVA ventilation with a standard mixture of air and oxygen, heliox was introduced for 3 h, followed by 3 h of air-oxygen. Heart rate, peripheral capillary oxygen saturation, cerebral oxygenation, electrical activity of the diaphragm (Edi) and selected ventilatory parameters (e.g., respiratory rate, peak inspiratory pressure) were continuously monitored. We found that application of heliox NIV-NAVA in preterm infants was feasible and associated with a prompt and significant decrease of Edi suggesting reduced respiratory effort, while all other parameters were stable throughout the study, and had similar values during heliox and air-oxygen ventilation. This therapy may potentially enhance the efficacy of non-invasive respiratory support in preterm neonates and reduce the number of infants progressing to ventilatory failure.
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Estimated ECG Subtraction method for removing ECG artifacts in esophageal recordings of diaphragm EMG. Biomed Signal Process Control 2021. [DOI: 10.1016/j.bspc.2021.102861] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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