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Lane JE, Ford T, Noelck M, Byrd C. High flow, low results: The limits of high flow nasal cannula in the treatment of bronchiolitis. Paediatr Respir Rev 2024:S1526-0542(24)00052-6. [PMID: 38964936 DOI: 10.1016/j.prrv.2024.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Accepted: 06/03/2024] [Indexed: 07/06/2024]
Abstract
Bronchiolitis continues to be the most common cause of hospitalization in the first year of life. We continue to search for the remedy that will improve symptoms, shorten hospitalization and prevent worsening of disease. Although initially thought to be a promising therapy, large randomized controlled trials show us that high flow nasal cannula (HFNC) use is not that remedy. These trials show no major differences in duration of hospital stay, intensive care unit (ICU) admission rates, duration of stay in the ICU, duration of oxygen therapy, intubation rates, heart rate, respiratory rate or comfort scores. Additionally, practices regarding initiation, flow rates and weaning continue to vary from institution to institution and there are currently no agreed upon indications for its use. This reveals the need for evidence based guidelines on HFNC use in bronchiolitis.
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Affiliation(s)
- Jennifer E Lane
- Division of Hospital Medicine, Department of Pediatrics, Oregon Health and Science University, Portland, OR, United States.
| | - Taylor Ford
- Division of Hospital Medicine, Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia.
| | - Michelle Noelck
- Division of Hospital Medicine, Department of Pediatrics, Oregon Health and Science University, Portland, OR, United States.
| | - Courtney Byrd
- Division of Hospital Medicine, Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia.
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2
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Kannikeswaran N, Ehrman RR, Spencer P, Pitman-Hunt C, Leja J, Lelak K, Arora R, Delaroche A. Impact of initial high flow nasal cannula flow rates on clinical outcomes in children with bronchiolitis. Pediatr Pulmonol 2024; 59:1281-1287. [PMID: 38353397 DOI: 10.1002/ppul.26900] [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: 06/25/2023] [Revised: 01/14/2024] [Accepted: 01/27/2024] [Indexed: 04/30/2024]
Abstract
PURPOSE Our aim was to evaluate the impact of the initial high flow nasal cannula (HFNC) flow rate on clinical outcomes in children with bronchiolitis. METHODS This secondary analysis of retrospective data included children <2 years who required HFNC for bronchiolitis between 10/01/2018-04/20/2019, and following implementation of a revised institutional bronchiolitis pathway between 10/01/2021-04/30/2022. The new pathway recommended weight-based initiation of HFNC at 1.5-2 L/kg/min. We evaluated the effect of low (<1.0 L/kg/min), medium (1-1.5 L/kg/min) and high (>1.5 L/kg/min) HFNC flow rates on need for positive pressure ventilation (PPV), intensive care unit (ICU) transfer, HFNC treatment time, and hospital length of stay (LOS). RESULTS The majority of the 885 included children had low initial flow rates (low [n = 450, 50.8%], medium [n = 332, 37.5%] and high [n = 103, 11.7%]). There were no significant differences in PPV (high: 7.8% vs. medium: 9.3% vs. low: 8.2%, p = 0.8) or ICU transfers (high: 4.9% vs. medium: 6.0% vs. low: 3.8%, p = 0.3). The low flow group had a significantly longer median HFNC treatment time (High: 29 [18, 45] vs. medium: 29 [16, 50] vs. low: 39 [25, 63], p < .001) and hospital LOS (High: 41 [27, 59] vs. medium: 42 [29, 66] vs. low: 50 (39, 75), p < .001). Logistic and linear regression models did not demonstrate any associations between HFNC flow rates and PPV or hospital LOS. CONCLUSIONS Initial HFNC flow rates were not associated with significant changes in clinical outcomes in children in children with bronchiolitis.
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Affiliation(s)
| | - Robert R Ehrman
- Department of Emergency Medicine, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Priya Spencer
- Children's Hospital of Michigan, Detroit, Michigan, USA
| | - Chaya Pitman-Hunt
- Children's Hospital of Michigan, Central Michigan University, Detroit, Michigan, USA
| | - Jacqueline Leja
- Children's Hospital of Michigan, Central Michigan University, Detroit, Michigan, USA
| | - Karima Lelak
- Pediatric Emergency Medicine, University of Michigan School of Medicine, Ann Arbor, Michigan, USA
| | - Rajan Arora
- Children's Hospital of Michigan, Central Michigan University, Detroit, Michigan, USA
| | - Amy Delaroche
- Children's Hospital of Michigan, Central Michigan University, Detroit, Michigan, USA
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3
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Li J, Deng N, He WJA, Yang C, Liu P, Albuainain FA, Ring BJ, Miller AG, Rotta AT, Guglielmo RD, Milési C. The effects of flow settings during high-flow nasal cannula oxygen therapy for neonates and young children. Eur Respir Rev 2024; 33:230223. [PMID: 38537946 PMCID: PMC10966474 DOI: 10.1183/16000617.0223-2023] [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: 10/30/2023] [Accepted: 01/18/2024] [Indexed: 07/23/2024] Open
Abstract
BACKGROUND During neonatal and paediatric high-flow nasal cannula therapy, optimising the flow setting is crucial for favourable physiological and clinical outcomes. However, considerable variability exists in clinical practice regarding initial flows and subsequent adjustments for these patients. Our review aimed to summarise the impact of various flows during high-flow nasal cannula treatment in neonates and children. METHODS Two investigators independently searched PubMed, Embase, Web of Science, Scopus and Cochrane for in vitro and in vivo studies published in English before 30 April 2023. Studies enrolling adults (≥18 years) or those using a single flow setting were excluded. Data extraction and risk of bias assessments were performed independently by two investigators. The study protocol was prospectively registered with PROSPERO (CRD42022345419). RESULTS 38 406 studies were identified, with 44 included. In vitro studies explored flow settings' effects on airway pressures, humidity and carbon dioxide clearance; all were flow-dependent. Observational clinical studies consistently reported that higher flows led to increased pharyngeal pressure and potentially increased intrathoracic airway pressure (especially among neonates), improved oxygenation, and reduced respiratory rate and work of breathing up to a certain threshold. Three randomised controlled trials found no significant differences in treatment failure among different flow settings. Flow impacts exhibited significant heterogeneity among different patients. CONCLUSION Individualising flow settings in neonates and young children requires consideration of the patient's peak inspiratory flow, respiratory rate, heart rate, tolerance, work of breathing and lung aeration for optimal care.
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Affiliation(s)
- Jie Li
- Department of Cardiopulmonary Sciences, Division of Respiratory Care, Rush University, Chicago, IL, USA
- These authors contributed equally
| | - Ni Deng
- Department of Respiratory Care, West China Hospital of Sichuan University, Chengdu, China
- These authors contributed equally
| | - Wan Jia Aaron He
- School of Nursing, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
- These authors contributed equally
| | - Cui Yang
- Department of Pediatric Intensive Care Unit, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
- These authors contributed equally
| | - Pan Liu
- Department of Pediatric Intensive Care Unit, Children's Hospital of Fudan University, National Center for Children's Health, Shanghai, China
- These authors contributed equally
| | - Fai A Albuainain
- Department of Cardiopulmonary Sciences, Division of Respiratory Care, Rush University, Chicago, IL, USA
- Department of Respiratory Care, College of Applied Medical Sciences, Imam Abdulrahman bin Faisal University, Jubail, Saudi Arabia
| | - Brian J Ring
- Department of Surgery, Division of Trauma and Critical Care, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Andrew G Miller
- Division of Pediatric Critical Care Medicine, Duke University Medical Center, Durham, NC, USA
- Respiratory Care Services, Duke University Medical Center, Durham, NC, USA
| | - Alexandre T Rotta
- Division of Pediatric Critical Care Medicine, Duke University Medical Center, Durham, NC, USA
| | - Robert D Guglielmo
- Division of Pediatric Critical Care, Department of Pediatrics, Loma Linda University Children's Hospital, Loma Linda, CA, USA
- Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Christophe Milési
- Pediatric Intensive Care Unit, University of Montpellier I, Montpellier, France
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Milesi C, Nogue E, Baleine J, Moulis L, Pouyau R, Gavotto A, Brossier D, Mortamet G, Cambonie G. ROX (Respiratory rate-OXygenation) index to predict early response to high-flow nasal cannula therapy in infants with viral bronchiolitis. Pediatr Pulmonol 2024. [PMID: 38197495 DOI: 10.1002/ppul.26860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 12/04/2023] [Accepted: 01/02/2024] [Indexed: 01/11/2024]
Abstract
INTRODUCTION High-flow nasal cannula (HFNC) is commonly used as first step respiratory support in infants with moderate-to-severe acute viral bronchiolitis (AVB). This device, however, fails to effectively manage respiratory distress in about a third of patients, and data are limited on determinants of patient response. The respiratory rate-oxygenation (ROX) index is a relevant tool to predict the risk for HFNC failure in adult patients with lower respiratory tract infections. The primary objective of this study was to assess the relationship between ROX indexes collected before and 1 h after HFNC initiation, and HFNC failure occurring in the following 48 h in infants with AVB. METHOD This is an ancillary study to the multicenter randomized controlled trial TRAMONTANE 2, that included 286 infants of less than 6 months with moderate-to-severe AVB. Collection of physiological variables at baseline (H0), and 1 h after HFNC (H1), included heart rate (HR), respiratory rate (RR), fraction of inspired oxygen (FiO2 ), respiratory distress score (modified Wood's Clinical Asthma Score [mWCAS]), and pain and discomfort scale (EDIN). ROX and ROX-HR were calculated asSpO 2 FiO 2 RR $\frac{\left(\frac{{\mathrm{SpO}}_{2}}{{\mathrm{FiO}}_{2}}\right)}{\mathrm{RR}}$ and100 × ROX HR $100\times \frac{\mathrm{ROX}}{\mathrm{HR}}$ , respectively. Predefined HFNC failure criteria included increase in respiratory distress score or RR, increase in discomfort, and severe apnea episodes. The accuracies of ROX, ROX-HR indexes and clinical variable to predict HFNC failure were assessed using receiver operating curve analysis. We analyzed predictive factors of HFNC failure using multivariate logistic regressions. RESULT HFNC failure occurred in 111 of 286 (39%) infants, and for 56 (50% of the failure) of them within the first 6 h. The area under the curve of ROX indexes at H0 and H1 were, respectively, 0.56 (95% confidence interval [CI] 0.48-0.63, p = 0.14), 0.56 (95% CI 0.49-0.64, p = 0.09). ROX-HR performances were better but remained poorly discriminant. HFNC failure was associated with higher mWCAS score at H1 (p < 0.01) and lower decrease in EDIN scale during the first hour of HFNC delivery (p = 0.02). In the multivariate analyses, age and mWCAS score were were found to be independent factors associated with HFNC failure at H0. At H1, weight and mWCAS were associated factors. CONCLUSION In this study, neither ROX index, nor physiological variables usually collected in infants with AVB had early discriminatory capacity to predict HFNC failure.
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Affiliation(s)
- Christophe Milesi
- Pediatric Intensive Care Unit, Arnaud de Villeneuve University Hospital, Montpellier, France
| | - Erika Nogue
- Clinical Research and Epidemiology Unit, CHU Montpellier, Univ Montpellier, Montpellier, France
| | - Julien Baleine
- Pediatric Intensive Care Unit, Arnaud de Villeneuve University Hospital, Montpellier, France
| | - Lionel Moulis
- Clinical Research and Epidemiology Unit, CHU Montpellier, Univ Montpellier, Montpellier, France
| | - Robin Pouyau
- Pediatric Intensive Care Unit, Woman-Mother-Child University Hospital, Lyon, France
| | - Arthur Gavotto
- Pediatric Intensive Care Unit, Arnaud de Villeneuve University Hospital, Montpellier, France
| | - David Brossier
- Pediatric Intensive Care Unit, University Hospital Caen-Normandy, France
| | - Guillaume Mortamet
- Pediatric Intensive Care Unit, Grenoble University Hospital, La Tronche, France
| | - Gilles Cambonie
- Pediatric Intensive Care Unit, Arnaud de Villeneuve University Hospital, Montpellier, France
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Smith A, Banville D, O'Rourke C, Melvin P, Batey L, Borgmann A, Waltzman M, Agus MSD. Randomized Trial of Weight-Based Versus Fixed Limit High-Flow Nasal Cannula in Bronchiolitis. Hosp Pediatr 2023; 13:387-393. [PMID: 37122050 DOI: 10.1542/hpeds.2022-006656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
BACKGROUND High flow nasal cannula (HFNC) is increasingly used to treat bronchiolitis. Although lower HFNC rates (≤8 L per minute) are commonly employed, higher weight-based flows more effectively alleviate dyspnea. The impact of higher flows on the need for care escalation is unclear. METHODS A randomized clinical trial was performed in a community hospital inpatient pediatric unit. Patients with bronchiolitis on HFNC were randomized to an existing "standard" HFNC protocol (max flow of 8 L per minute), or to a novel weight-based protocol (max flow of 2 L/kg per minute). Weaning of HFNC for the patients in the standard arm was left to provider discretion but was prescribed in the weight-based arm. The primary outcome was interhospital transfer to a PICU. The study was powered to detect a 35% difference in transfer rate. RESULTS 51 patients were randomized to the weight-based or standard HFNC arms. The interhospital PICU transfer rate did not differ significantly between the standard (41.7%) and weight-based arms (51.9%) P = .47. Hospital length of stay was significantly shorter in the weight-based arm with protocolized weaning (45 h [interquartile range 42.1-63.3] versus 77.6 h [interquartile range 47.3-113.4]); P = .01. There were no significant adverse events in either group. CONCLUSIONS Weight-based provision of HFNC did not significantly impact the number of patients with bronchiolitis requiring interhospital transfer from a community hospital to a PICU, though we were underpowered for this outcome. Patients who received weight-based flow with protocolized weaning had a shorter length of stay, which may reflect a clinical impact of weight-based flow or the efficacy of the aggressive weaning pathway.
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Affiliation(s)
- Alla Smith
- Department of Pediatrics, Division of Medical Critical Care
- South Shore Hospital, South Weymouth, Massachusetts
| | | | | | - Patrice Melvin
- Office of Health Equity and Inclusion, Boston Children's Hospital, Boston, Massachusetts
| | - Lara Batey
- South Shore Hospital, South Weymouth, Massachusetts
| | | | - Mark Waltzman
- Department of Pediatrics, Division of Medical Critical Care
- South Shore Hospital, South Weymouth, Massachusetts
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Jose D, Parameswaran N. Advances in Management of Respiratory Failure in Children. Indian J Pediatr 2023; 90:470-480. [PMID: 37010692 DOI: 10.1007/s12098-023-04559-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 03/07/2023] [Indexed: 04/04/2023]
Abstract
Providing the right respiratory support is an essential skill, vital for anyone treating sick children. Recent advances in respiratory support include developments in both non-invasive and invasive ventilatory strategies. In non-invasive ventilation, newer modalities are being developed, in an attempt to decrease the need for invasive ventilation. This include newer techniques like Heated humidified high-flow nasal cannula (HHHFNC) and improvements in existing modes. The success of Continuous positive airway pressure (CPAP) and other non-invasive modes depend to a large extent on choosing and maintaining a suitable interface. When it comes to invasive ventilation, recent advances are focussing on increasing automation, improving patient comfort and minimising lung injury. Concepts like mechanical power are attempts at understanding the mechanisms of unintended injuries resulting from respiratory support and newer monitoring methods like transpulmonary pressure, thoracic impedance tomography are attempts at measuring potential markers of lung injury. Using the vast arrays of available ventilatory options judiciously, considering their advantages and drawbacks in every individual case will be the prime responsibility of clinicians in the future. Simultaneously, efforts have been made to identify potential drugs that can favourably modify the pathophysiology of acute respiratory distress syndrome (ARDS). Unfortunately, though eagerly awaited, most pharmaceutical agents tried in pediatric ARDS have not shown definite benefit. Pulmonary local drug and gene therapy using liquid ventilation strategies may revolutionize our future understanding and management of lung diseases.
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Affiliation(s)
- Divakar Jose
- Department of Pediatrics, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India
| | - Narayanan Parameswaran
- Department of Pediatrics, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Puducherry, India.
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Whitney J, Keir I. Clinical review of high-flow nasal oxygen therapy in human and veterinary patients. Front Vet Sci 2023; 10:1070881. [PMID: 36950541 PMCID: PMC10027015 DOI: 10.3389/fvets.2023.1070881] [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: 10/15/2022] [Accepted: 02/02/2023] [Indexed: 03/08/2023] Open
Abstract
Oxygen therapy is the first-line treatment for hypoxemic acute respiratory failure. In veterinary medicine this has traditionally been provided via mask, low-flow nasal oxygen cannulas, oxygen cages and invasive positive pressure ventilation. Traditional non-invasive modalities are limited by the maximum flow rate and fraction of inspired oxygen (FiO2) that can be delivered, variability in oxygen delivery and patient compliance. The invasive techniques are able to provide higher FiO2 in a more predictable manner but are limited by sedation/anesthesia requirements, potential complications and cost. High-flow nasal oxygen therapy (HFNOT) represents an alternative to conventional oxygen therapy. This modality delivers heated and humidified medical gas at adjustable flow rates, up to 60 L/min, and FiO2, up to 100%, via nasal cannulas. It has been proposed that HFNOT improves pulmonary mechanics and reduces respiratory fatigue via reduction of anatomical dead space, provision of low-level positive end-expiratory pressure (PEEP), provision of constant FiO2 at rates corresponding to patient requirements and through improved patient tolerance. Investigations into the use of HFNOT in veterinary patients have increased in frequency since its clinical use was first reported in dogs with acute respiratory failure in 2016. Current indications in dogs include acute respiratory failure associated with pulmonary parenchymal disease, upper airway obstruction and carbon monoxide intoxication. The use of HFNOT has also been advocated in certain conditions in cats and foals. HFNOT is also being used with increasing frequency in the treatment of a widening range of conditions in humans. Although there remains conflict regarding its use and efficacy in some patient groups, overall these reports indicate that HFNOT decreases breathing frequency and work of breathing and reduces the need for escalation of respiratory support. In addition, they provide insight into potential future veterinary applications. Complications of HFNOT have been rarely reported in humans and animals. These are usually self-limiting and typically result in lower morbidity and mortality than those associated with invasive ventilation techniques.
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Milési C, Baudin F, Durand P, Emeriaud G, Essouri S, Pouyau R, Baleine J, Beldjilali S, Bordessoule A, Breinig S, Demaret P, Desprez P, Gaillard-Leroux B, Guichoux J, Guilbert AS, Guillot C, Jean S, Levy M, Noizet-Yverneau O, Rambaud J, Recher M, Reynaud S, Valla F, Radoui K, Faure MA, Ferraro G, Mortamet G. Clinical practice guidelines: management of severe bronchiolitis in infants under 12 months old admitted to a pediatric critical care unit. Intensive Care Med 2023; 49:5-25. [PMID: 36592200 DOI: 10.1007/s00134-022-06918-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 10/13/2022] [Indexed: 01/03/2023]
Abstract
PURPOSE We present guidelines for the management of infants under 12 months of age with severe bronchiolitis with the aim of creating a series of pragmatic recommendations for a patient subgroup that is poorly individualized in national and international guidelines. METHODS Twenty-five French-speaking experts, all members of the Groupe Francophone de Réanimation et Urgence Pédiatriques (French-speaking group of paediatric intensive and emergency care; GFRUP) (Algeria, Belgium, Canada, France, Switzerland), collaborated from 2021 to 2022 through teleconferences and face-to-face meetings. The guidelines cover five areas: (1) criteria for admission to a pediatric critical care unit, (2) environment and monitoring, (3) feeding and hydration, (4) ventilatory support and (5) adjuvant therapies. The questions were written in the Patient-Intervention-Comparison-Outcome (PICO) format. An extensive Anglophone and Francophone literature search indexed in the MEDLINE database via PubMed, Web of Science, Cochrane and Embase was performed using pre-established keywords. The texts were analyzed and classified according to the Grading of Recommendations Assessment, Development and Evaluation (GRADE) methodology. When this method did not apply, an expert opinion was given. Each of these recommendations was voted on by all the experts according to the Delphi methodology. RESULTS This group proposes 40 recommendations. The GRADE methodology could be applied for 17 of them (3 strong, 14 conditional) and an expert opinion was given for the remaining 23. All received strong approval during the first round of voting. CONCLUSION These guidelines cover the different aspects in the management of severe bronchiolitis in infants admitted to pediatric critical care units. Compared to the different ways to manage patients with severe bronchiolitis described in the literature, our original work proposes an overall less invasive approach in terms of monitoring and treatment.
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Affiliation(s)
- Christophe Milési
- Pediatric Intensive Care Unit, Montpellier University Hospital, Montpellier, France.
| | - Florent Baudin
- Pediatric Intensive Care Unit, Lyon Hospital Femme-Mère-Enfants, Bron, France
| | - Philippe Durand
- Pediatric Intensive Care Unit, Bicêtre Hospital, Assistance Publique des Hôpitaux de Paris, Kremlin-Bicêtre, France
| | - Guillaume Emeriaud
- Pediatric Intensive Care Unit, Sainte-Justine University Hospital, Montreal, Canada
| | - Sandrine Essouri
- Pediatric Department, Sainte-Justine University Hospital, Montreal, Canada
| | - Robin Pouyau
- Pediatric Intensive Care Unit, Lyon Hospital Femme-Mère-Enfants, Bron, France
| | - Julien Baleine
- Pediatric Intensive Care Unit, Montpellier University Hospital, Montpellier, France
| | - Sophie Beldjilali
- Pediatric Intensive Care Unit, La Timone University Hospital, Assistance Publique des Hôpitaux de Marseille, Marseille, France
| | - Alice Bordessoule
- Pediatric Intensive Care Unit, Geneva University Hospital, Geneva, Switzerland
| | - Sophie Breinig
- Pediatric Intensive Care Unit, Toulouse University Hospital, Toulouse, France
| | - Pierre Demaret
- Intensive Care Unit, Liège University Hospital, Liège, Belgium
| | - Philippe Desprez
- Pediatric Intensive Care Unit, Point-à-Pitre University Hospital, Point-à-Pitre, France
| | | | - Julie Guichoux
- Pediatric Intensive Care Unit, Bordeaux University Hospital, Bordeaux, France
| | - Anne-Sophie Guilbert
- Pediatric Intensive Care Unit, Strasbourg University Hospital, Strasbourg, France
| | - Camille Guillot
- Pediatric Intensive Care Unit, Lille University Hospital, Lille, France
| | - Sandrine Jean
- Pediatric Intensive Care Unit, Trousseau Hospital, Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Michael Levy
- Pediatric Intensive Care Unit, Robert Debré Hospital, Assistance Publique des Hôpitaux de Paris, Paris, France
| | | | - Jérôme Rambaud
- Pediatric Intensive Care Unit, Trousseau Hospital, Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Morgan Recher
- Pediatric Intensive Care Unit, Lille University Hospital, Lille, France
| | - Stéphanie Reynaud
- Pediatric Intensive Care Unit, Lyon Hospital Femme-Mère-Enfants, Bron, France
| | - Fréderic Valla
- Pediatric Intensive Care Unit, Lyon Hospital Femme-Mère-Enfants, Bron, France
| | - Karim Radoui
- Pneumology EHS Pediatric Department, Faculté de Médecine d'Oran, Canastel, Oran, Algeria
| | | | - Guillaume Ferraro
- Pediatric Emergency Department, Nice University Hospital, Nice, France
| | - Guillaume Mortamet
- Pediatric Intensive Care Unit, Grenoble-Alpes University Hospital, Grenoble, France
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Nascimento MS, do Prado C, Costa ELV, Alcala GC, Corrêa LC, Rossi FS, Amato MBP, Rebello CM. Effect of flow rate on the end-expiratory lung volume in infants with bronchiolitis using high-flow nasal cannula evaluated through electrical impedance tomography. Pediatr Pulmonol 2022; 57:2681-2687. [PMID: 35931651 DOI: 10.1002/ppul.26082] [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: 01/14/2022] [Revised: 06/13/2022] [Accepted: 07/19/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVES To evaluate the effects of four flow rates on the functional residual capacity (FRC) and pulmonary ventilation distribution while using a high-flow nasal cannula (HFNC). WORKING HYPOTHESIS Our hypothesis is that flow rates below 1.5 L·kg-1 ·min-1 lead to FRC loss and respiratory distress. STUDY DESIGN A single-center, prospective clinical study. PATIENT SELECTION Infants diagnosed with acute viral bronchiolitis were given HFNC. METHODOLOGY Through a prospective clinical study, the effects of four different flow rates, 2.0, 1.5, 1.0, and 0.5 L·kg-1 ·min-1 , on FRC and the pulmonary ventilation pattern were evaluated using electrical impedance tomography. The impedance variation (delta Z), end-expiratory lung volume (EELZ), respiratory rate, heart rate, respiratory distress score, and saturation/fraction of inspired oxygen ratio (SpO2 /FI O2 ), were also evaluated at each flow rate. RESULTS Among the 11 infants included, There was a decrease in respiratory distress score at a flow rate of 1.5 L·kg-1 ·min-1 (*p = 0.021), and at a flow rate of 2.0 L·kg-1 ·min-1 (**p = 0.003) compared to 0.5 L·kg-1 ·min-1 . There was also a small but significant increase in SpO2 /FiO2 at flow rates of 1.5 (*p = 0.023), and 2.0 L·kg-1 ·min-1 (**p = 0.008) compared to 0.5 L·kg-1 ·min-1 . There were no other significant changes in the clinical parameters. In the global EELZ measurements, there was a significant increase under a flow rate of 2.0 L·kg-1 ·min-1 as compared to 0.5 L·kg-1 ·min-1 (p = 0.03). In delta Z values, there were no significant variations between the different flow rates. CONCLUSION The ∆EELZ increases at the highest flow rates were accompanied by decreased distress scores and improved oxygenation.
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Affiliation(s)
- Milena S Nascimento
- Maternal-Child Department, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Cristiane do Prado
- Maternal-Child Department, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | | | - Glasiele C Alcala
- Divisão de Pneumologia, Departamento Cardiopulmonar, Instituto do Coração (INCOR), Sao Paulo City, Sao Paulo, Brazil
| | - Letícia C Corrêa
- Divisão de Pneumologia, Departamento Cardiopulmonar, Instituto do Coração (INCOR), Sao Paulo City, Sao Paulo, Brazil
| | - Felipe S Rossi
- Maternal-Child Department, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Marcelo B P Amato
- Divisão de Pneumologia, Departamento Cardiopulmonar, Instituto do Coração (INCOR), Sao Paulo City, Sao Paulo, Brazil
| | - Celso M Rebello
- Maternal-Child Department, Hospital Israelita Albert Einstein, São Paulo, Brazil
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Kageyama S, Takeishi N, Taenaka H, Yoshida T, Wada S. Fluid dynamic assessment of positive end-expiratory pressure in a tracheostomy tube connector during respiration. Med Biol Eng Comput 2022; 60:2981-2993. [PMID: 36002620 PMCID: PMC9402408 DOI: 10.1007/s11517-022-02649-2] [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: 01/17/2022] [Accepted: 08/19/2022] [Indexed: 11/24/2022]
Abstract
High-flow oxygen therapy using a tracheostomy tube is a promising clinical approach to reduce the work of breathing in tracheostomized patients. Positive end-expiratory pressure (PEEP) is usually applied during oxygen inflow to improve oxygenation by preventing end-expiratory lung collapse. However, much is still unknown about the geometrical effects of PEEP, especially regarding tracheostomy tube connectors (or adapters). Quantifying the degree of end-expiratory pressure (EEP) that takes patient-specific spirometry into account would be useful in this regard, but no such framework has been established yet. Thus, a platform to assess PEEP under respiration was developed, wherein three-dimensional simulation of airflow in a tracheostomy tube connector is coupled with a lumped lung model. The numerical model successfully reflected the magnitude of EEP measured experimentally using a lung phantom. Numerical simulations were further performed to quantify the effects of geometrical parameters on PEEP, such as inlet angles and rate of stenosis in the connector. Although sharp inlet angles increased the magnitude of EEP, they cannot be expected to achieve clinically reasonable PEEP. On the other hand, geometrical constriction in the connector can potentially result in PEEP as obtained with conventional nasal cannulae.
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11
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Parlar-Chun RL, Lafferty-Prather M, Gonzalez VM, Huh HS, Degaffe GH, Evangelista MS, Gavvala S, Khera S, Gourishankar A. Randomized Trial to Compare Nasoduodenal Tube and Nasogastric Tube Feeding in Infants with Bronchiolitis on High-Flow Nasal Cannula. J Pediatr Intensive Care 2022. [DOI: 10.1055/s-0042-1746178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Abstract
Objectives In this article, we aimed to determine if there is a difference in length of respiratory support between nasoduodenal (NDT) and nasogastric tube (NGT) feedings in patients with bronchiolitis on high-flow nasal cannula (HFNC).
Methods A single-center nonblinded parallel randomized control trial at a tertiary care hospital was designed. Pediatric patients ≤ 12 months old with bronchiolitis, on HFNC, requiring nutrition via a feeding tube were eligible. Patients were randomized to NGT or NDT and stratified into low- and high-risk groups. Length of respiratory support was the primary outcome. Secondary outcomes included length of stay, number of emesis events, maximum level of respiratory support, number of X-rays to confirm tube placement, number of attempts to place the tube by staff, adverse events during placement, instances of pediatric intensive care unit admission, and emergency room visits and hospital readmissions within 7 and 30 days after discharge.
Results Forty patients were randomized, 20 in each arm. There were no significant differences in baseline characteristics. We found no significant difference in length of respiratory support between the two groups (NGT 0.84 incidence rate ratio [0.58, 1.2], p = 0.34). None of the secondary outcomes showed significant differences. Each arm reported one adverse event: nasal trauma in the NGT group and pneumothorax in the NDT group.
Conclusion For infants with bronchiolitis on HFNC that need enteric tube feedings, we find no difference in duration of respiratory support or other clinically relevant outcomes for those with NGT or NDT. These results should be interpreted in the context of a limited sample size and an indirect primary outcome of length of respiratory support that may be influenced by other factors besides aspiration events.
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Affiliation(s)
| | | | - Veronica M. Gonzalez
- Department of Pediatrics, McGovern Medical School, Houston, Texas, United States
| | - Hanna S. Huh
- Department of Pediatrics, McGovern Medical School, Houston, Texas, United States
| | - Guenet H. Degaffe
- Department of Pediatrics, McGovern Medical School, Houston, Texas, United States
| | | | - Sheela Gavvala
- Department of Pediatrics, McGovern Medical School, Houston, Texas, United States
| | - Sofia Khera
- Department of Pediatrics, Loma Linda University, Loma Linda, California, United States
| | - Anand Gourishankar
- Department of Pediatrics, Children's National Hospital, Washington DC, United States
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12
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Nolasco S, Manti S, Leonardi S, Vancheri C, Spicuzza L. High-Flow Nasal Cannula Oxygen Therapy: Physiological Mechanisms and Clinical Applications in Children. Front Med (Lausanne) 2022; 9:920549. [PMID: 35721052 PMCID: PMC9203852 DOI: 10.3389/fmed.2022.920549] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
High-flow nasal cannula (HFNC) oxygen therapy has rapidly become a popular modality of respiratory support in pediatric care. This is undoubtedly due to its ease of use and safety, which allows it to be used in a wide variety of settings, ranging from pediatric intensive care to patients' homes. HFNC devices make it possible to regulate gas flow and temperature, as well as allowing some nebulized drugs to be administered, features very useful in children, in which the balance between therapeutic effectiveness and adherence to treatment is pivotal. Although the physiological effects of HFNC are still under investigation, their mechanisms of action include delivery of fixed concentration of oxygen, generation of positive end-expiratory pressure, reduction of the work of breathing and clearance of the nasopharyngeal dead space, while providing optimal gas conditioning. Nevertheless, current evidence supports the use of HFNC mainly in moderate-to-severe bronchiolitis, whereas for asthma exacerbations and breath sleeping disorders there is a lack of randomized controlled trials comparing HFNC to continuous positive airway pressure (CPAP) and non-invasive ventilation (NIV), which are essentials for the identification of response and non-response predictors. In this regard, the development of clinical guidelines for HFNC, including flow settings, indications, and contraindications is urgently needed.
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Affiliation(s)
- Santi Nolasco
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
- *Correspondence: Santi Nolasco
| | - Sara Manti
- Pediatric Pulmonology Unit, Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Salvatore Leonardi
- Pediatric Pulmonology Unit, Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Carlo Vancheri
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Lucia Spicuzza
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
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13
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Rice JL, Lefton-Greif MA. Treatment of Pediatric Patients With High-Flow Nasal Cannula and Considerations for Oral Feeding: A Review of the Literature. PERSPECTIVES OF THE ASHA SPECIAL INTEREST GROUPS 2022; 7:543-552. [PMID: 36276931 PMCID: PMC9585535 DOI: 10.1044/2021_persp-21-00152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
PURPOSE High-Flow Nasal Cannula (HFNC) has become an increasingly common means of noninvasive respiratory support in pediatrics and is being used in infants and children with respiratory distress both inside and outside of the intensive care units. Despite the widespread use of HFNC, there remains a paucity of data on optimal flow rates and its impact on morbidity, mortality, and desired outcomes. Given the scarcity of information in these critical areas, it is not surprising that guidelines for initiation of oral feeding do not exist. This review article will review HFNC mechanisms of action, its use in specific populations and settings, and finally what is known about initiation of feeding during this therapy. CONCLUSIONS The practice of withholding oral feeding solely, because of HFNC, is not supported in the literature at the time of this writing, but in the absence of safety data from clinical trials, clinicians should proceed with caution and consider patient-specific factors while making decisions about oral feeding. Well-controlled prospective clinical trials are needed for development of best practice clinical guidelines and attainment of optimal outcomes.
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Affiliation(s)
- Jessica L. Rice
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
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14
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Clayton JA, Slain KN, Shein SL, Cheifetz IM. High Flow Nasal Cannula in the Pediatric Intensive Care Unit. Expert Rev Respir Med 2022; 16:409-417. [PMID: 35240901 DOI: 10.1080/17476348.2022.2049761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The use of high flow nasal cannula (HFNC) has become widely used in pediatric intensive care units (PICUs) throughout the world. The rapid adoption has outpaced the number of studies evaluating the safety and efficacy in a variety of pediatric diseases/conditions. AREAS COVERED This scoping review begins with the definition and mechanisms of action of HFNC and then follows with a review of the literature focused on studies performed on critically ill children cared for in the PICU. The Pubmed database was searched with a pediatric filter from the time period 2000 to 2021. EXPERT OPINION The rapid adoption of HFNC in PICUs has largely been driven by changes in institutional practices and small observational studies. There is a lack of adequately powered studies evaluating patient-centered outcomes, such as intubation rates, mortality, PICU and hospital length of stay. Given the wide variability in flow rates and clinical indications, more research is needed to better define effective flow rates for different disease states as well as markers of treatment success and failure. One particular entity that is poorly studied is the use of HFNC in those at risk for developing pediatric acute respiratory distress syndrome (PARDS).
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Affiliation(s)
- Jason A Clayton
- Division of Pediatric Critical Care Medicine, Rainbow Babies & Children's Hospital, Cleveland, Ohio
| | - Katherine N Slain
- Division of Pediatric Critical Care Medicine, Rainbow Babies & Children's Hospital, Cleveland, Ohio
| | - Steven L Shein
- Division of Pediatric Critical Care Medicine, Rainbow Babies & Children's Hospital, Cleveland, Ohio
| | - Ira M Cheifetz
- Division of Pediatric Cardiac Critical Care Medicine, Rainbow Babies & Children's Hospital, Cleveland, Ohio
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15
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High-Flow Nasal Cannula Reduces Effort of Breathing But Not Consistently via Positive End-Expiratory Pressure. Chest 2022; 162:861-871. [DOI: 10.1016/j.chest.2022.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 03/05/2022] [Accepted: 03/07/2022] [Indexed: 11/23/2022] Open
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16
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Franklin D, Schibler A. Rising Intensive Care Costs in Bronchiolitis Infants-Is Nasal High Flow the Culprit? Pediatr Crit Care Med 2022; 23:218-222. [PMID: 35238842 DOI: 10.1097/pcc.0000000000002900] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Donna Franklin
- Gold Coast University Hospital, Children's Emergency and Critical Care Research, Southport, QLD, Australia
- Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD, Australia
- The University of Queensland, Faculty of Medicine, Brisbane, QLD, Australia
- Paediatric Research in Emergency Departments International Collaborative (PREDICT), Melbourne, VIC, Australia
- Wesley Medical Research, St Andrew's War Memorial Hospital, Brisbane, QLD, Australia
| | - Andreas Schibler
- Paediatric Research in Emergency Departments International Collaborative (PREDICT), Melbourne, VIC, Australia
- Wesley Medical Research, St Andrew's War Memorial Hospital, Brisbane, QLD, Australia
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17
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Ball M, Hilditch C, Hargreaves GA, Baulderstone D. Impact of initial flow rate of high-flow nasal cannula on clinical outcomes in infants with bronchiolitis. J Paediatr Child Health 2022; 58:141-145. [PMID: 34342375 DOI: 10.1111/jpc.15679] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 07/23/2021] [Indexed: 11/29/2022]
Abstract
AIM Bronchiolitis is a common condition in the paediatric population. Severe cases often receive respiratory support with high-flow nasal cannula (HFNC). Significant variation in the application of HFNC exists throughout Australia and internationally. This study aimed to determine if the flow rate used initially and when ceasing HFNC at the end of the illness alters clinical outcomes. METHODS A retrospective analysis was conducted of 251 children less than 12 months of age when admitted to the Women's and Children's Hospital Adelaide with bronchiolitis requiring HFNC therapy between the period of April 2016 to April 2019. The primary outcome was to determine if commencing HFNC therapy at different rates (1 L/kg/min, 1.5 L/kg/min and 2 L/kg/min) affected length of stay or treatment failure (escalation in physiological parameters or respiratory support). RESULTS Treatment failure occurred in 33%, 13% and 26% of those starting at 1 L/kg/min, 1.5 L/kg/min and 2 L/kg/min, respectively. Commencing HFNC therapy at 1 L/kg/min increased length of stay by an average of 30 h (P < 0.001) and the likelihood of treatment failure (P < 0.002) compared with starting at 1.5 L/kg/min. There was no statistical difference in outcomes between starting at 1.5 L/kg/min and 2 L/kg/min. There was no significant difference in the length of stay from the starting of weaning HFNC to time of discharge. CONCLUSIONS The commencing flow rates of initial HFNC therapy impact individual patient's outcomes, including length of stay and rates of treatment failure. Clinicians should consider commencing HFNC at 1.5 L/kg/min or 2 L/kg/min in infants that have failed low-flow oxygen therapy.
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Affiliation(s)
- Megan Ball
- Department of General Medicine, Women's and Children's Health Network, Adelaide, South Australia, Australia
| | - Cathie Hilditch
- Department of General Medicine, Women's and Children's Health Network, Adelaide, South Australia, Australia
| | - Garth A Hargreaves
- Department of General Medicine, Women's and Children's Health Network, Adelaide, South Australia, Australia
| | - David Baulderstone
- Department of General Medicine, Women's and Children's Health Network, Adelaide, South Australia, Australia
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18
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Safety and effectiveness of bubble continuous positive airway pressure as respiratory support for bronchiolitis in a pediatric ward. Eur J Pediatr 2022; 181:4039-4047. [PMID: 36129536 PMCID: PMC9649485 DOI: 10.1007/s00431-022-04616-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 08/20/2022] [Accepted: 09/05/2022] [Indexed: 12/02/2022]
Abstract
UNLABELLED The results of several clinical trials suggest that continuous positive airway pressure (CPAP) for acute bronchiolitis can be more effective than high-flow nasal cannula (HFNC). The use of HFNC involved a minimum reduction (5%) in admissions to the pediatric intensive care unit (PICU) in our hospital. Our main aim was to evaluate its safety and effectiveness as respiratory support for patients with bronchiolitis in a pediatric general ward. A secondary goal was to compare the admissions to PICU and the invasive mechanical ventilation (IMV) rate of patients treated with HFNC and those treated with HFNC/b-CPAP during the 2018-2019 and 2019-2020 epidemic seasons, respectively. Two prospective single-centre observational studies were performed. For the main aim, a cohort study (CS1) was carried out from 1st of November 2019 to 15th of January 2020. Inclusion criteria were children aged up to 3 months with bronchiolitis treated with b-CPAP support when HFNC failed. Epidemiological and clinical parameters were collected before and 60 min after the onset of CPAP and compared between the responder (R) and non-responders (NR) groups. NR was the group that required PICU admission. One hundred fifty-eight patients were admitted to the ward with bronchiolitis and HFNC. Fifty-seven out of one hundred fifty-eight required b-CPAP. No adverse events were observed. Thirty-two out of fifty-seven remained in the general ward (R-group), and 25/57 were admitted to PICU (NR-group). There were statistically significant differences in respiratory rate (RR) and heart rate (HR) between both groups before and after the initiation of b-CPAP, but the multivariable models showed that the main differences were observed after 60 min of therapy (lower HR, RR, BROSJOD score and FiO2 in the R-group). For the secondary aim, another cohort study (CS2) was performed comparing data from a pre-b-CPAP bronchiolitis season (1st of November 2018 to 15th January 2019) and the b-CPAP season (2019-2020). Inclusion criteria in pre-b-CPAP season were children aged up to 3 months admitted to the same general ward with moderate-severe bronchiolitis and with HFNC support. Admissions to PICU during the CPAP season were significantly reduced, without entailing an increase in the rate of IMV. CONCLUSION The implementation of b-CPAP for patients with bronchiolitis in a pediatric ward, in whom HFNC fails, is safe and effective and results in a reduction in PICU admissions. WHAT IS KNOWN • Bronchiolitis is one of the most frequent respiratory infections in children and one of the leading causes of hospitalization in infants. • Several studies suggest that the use of continuous positive airway pressure (CPAP) for acute bronchiolitis can be more effective than the high flow nasal cannula (HFNC). CPAP is a non-invasive ventilation (NIV) therapy used in patients admitted to pediatric intensive care unit (PICU) with progressive moderate-severe bronchiolitis. There is little experience in the literature on the use of continuous positive airway pressure (CPAP) for acute bronchiolitis in a general ward. WHAT IS NEW • CPAP could be safely and effectively used as respiratory support in young infants with moderate-severe bronchiolitis in a general ward and it reduced the rate of patients who required PICU admission. • Patients' heart and respiratory rate and their FiO2 needs in the first 60 minutes may help to decide whether or not to continue the CPAP therapy in a general ward.
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19
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Zhong Z, Zhao L, Zhao Y, Xia S. Comparison of high flow nasal cannula and non-invasive positive pressure ventilation in children with bronchiolitis: A meta-analysis of randomized controlled trials. Front Pediatr 2022; 10:947667. [PMID: 35911840 PMCID: PMC9334708 DOI: 10.3389/fped.2022.947667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The effects of high-flow nasal cannula (HFNC) compared to non-invasive positive pressure ventilation (NIPPV) on children with bronchiolitis remain unclear. METHODS This meta-analysis was performed following the preferred reporting items for systematic reviews and meta-analysis (PRISMA) statement. Randomized controlled trials (RCTs) were identified from a comprehensive search in PubMed, EMBASE, Cochrane Library, and Web of Science without time and language limitations. Primary endpoints include the rate of treatment failure, the rate of need for intubation, and the pediatric intensive care unit (PICU) length of stay. RESULTS Five RCTs including 541 children of less than 24 months were enrolled in the meta-analysis. Compared to the NIPPV group, the rate of treatment failure was significantly higher in the HFNC treatment group (I 2 = 0.0%, P = 0.574; RR 1.523, 95% CI 1.205 to 1.924, P < 0.001). No significant difference was noted in the need for intubation (I 2 = 0.0%, P = 0.431; RR 0.874, 95% CI 0.598 to 1.276, P = 0.485) and the PICU length of stay (I 2 = 0.0%, P = 0.568; WMD = -0.097, 95% CI = -0.480 to 0.285, P = 0.618) between the HFNC group and the NIPPV treatment. CONCLUSION Compared to the NIPPV group, HFNC therapy was associated with a significantly higher treatment failure rate in children suffering from bronchiolitis. The intubation rate and the PICU length of stay were comparable between the two approaches.
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Affiliation(s)
- Zhaoshuang Zhong
- Department of Respiratory, Central Hospital, Shenyang Medical College, Shenyang, China
| | - Long Zhao
- Department of Respiratory, Central Hospital, Shenyang Medical College, Shenyang, China
| | - Yan Zhao
- Department of Respiratory, Central Hospital, Shenyang Medical College, Shenyang, China
| | - Shuyue Xia
- Department of Respiratory, Central Hospital, Shenyang Medical College, Shenyang, China
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20
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Nagamori T, Yoshida Y, Ishibazawa E, Oka H, Takahashi H, Manabe H, Taketazu G, Shirai M, Sakata H, Oki J, Azuma H. Variations in the pathophysiology of respiratory syncytial virus infection depend on the age at onset. Pediatr Int 2022; 64:e14720. [PMID: 33817903 DOI: 10.1111/ped.14720] [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: 12/25/2020] [Revised: 03/03/2021] [Accepted: 03/30/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Lower respiratory tract infections due to respiratory syncytial virus are associated with morbidity and mortality in infants and children. Thus precise elucidation of respiratory syncytial virus lower respiratory tract infection pathophysiology is important. METHODS Medical records of hospitalized patients were reviewed. Patients were divided into three groups. Group I: patients who improved without oxygen supply. Group II: patients who received oxygen supply, but not nasal high-flow cannula therapy. Group III: patients who received nasal high-flow cannula. Patients were also divided by age group into the <6 months and ≥6 months groups. Parameters for differentiating the severity among groups were then evaluated. Further, serum concentration of high-mobility group box-1 and several cytokines (Inerleukin-6, soluble tumor necrosis factor receptor-1/2, Interleukin-18, Interferon-gamma responsive protein-100) were evaluated. RESULTS One hundred eighty-nine were enrolled. An analysis of variance for those <6 months showed overall differences including younger age, lower pH, and increased partial pressure of carbon dioxide (pCO2), bicarbonate (HCO3-), and base excess at the time of admission. On the other hand, analysis of variance for ≥6 months revealed that, in addition to a lower pH and increased pCO2, patients showed differences including decreased serum total protein and albumin, and increased aspartate aminotransferase (AST), alanin aminotransferase (ALT), lactate dehydrogenase (LDH), Ferritin and C-reactive protein (CRP) levels. Further, evaluation of serum cytokines showed that IL-6, s tumor necrotizing factor receptor-1/2, and high-mobility group box-1 were higher in Group II/III among the ≥6 months age group, but not for those in the <6 months group. CONCLUSIONS The pathophysiology of severe respiratory syncytial virus lower respiratory tract infection varies according to the age at onset. In late infancy and childhood, a certain proportion of patients show a hyperinflammatory status.
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Affiliation(s)
- Tsunehisa Nagamori
- Department of Pediatrics, Asahikawa Medical University, Asahikawa-City, Hokkaido, Japan
| | - Youichiro Yoshida
- Department of Pediatrics, Asahikawa Medical University, Asahikawa-City, Hokkaido, Japan
| | - Emi Ishibazawa
- Department of Pediatrics, Asahikawa Medical University, Asahikawa-City, Hokkaido, Japan
| | - Hideharu Oka
- Department of Pediatrics, Asahikawa Medical University, Asahikawa-City, Hokkaido, Japan
| | - Hironori Takahashi
- Department of Pediatrics, Asahikawa Kosei General Hospital, Asahikawa-City, Hokkaido, Japan
| | - Hiromi Manabe
- Department of Pediatrics, Asahikawa Kosei General Hospital, Asahikawa-City, Hokkaido, Japan
| | - Genya Taketazu
- Department of Pediatrics, Asahikawa Kosei General Hospital, Asahikawa-City, Hokkaido, Japan
| | - Masaru Shirai
- Department of Pediatrics, Asahikawa Kosei General Hospital, Asahikawa-City, Hokkaido, Japan
| | - Hiroshi Sakata
- Department of Pediatrics, Asahikawa Kosei General Hospital, Asahikawa-City, Hokkaido, Japan
| | - Junichi Oki
- Department of Pediatrics, Asahikawa Kosei General Hospital, Asahikawa-City, Hokkaido, Japan
| | - Hiroshi Azuma
- Department of Pediatrics, Asahikawa Medical University, Asahikawa-City, Hokkaido, Japan
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21
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Chao KY, Chien YH, Mu SC. High-flow nasal cannula in children with asthma exacerbation: A review of current evidence. Paediatr Respir Rev 2021; 40:52-57. [PMID: 33771473 DOI: 10.1016/j.prrv.2021.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/24/2020] [Accepted: 01/14/2021] [Indexed: 10/22/2022]
Abstract
Asthma is the commonest obstructive airway disease and the leading cause of morbidity in children. In the pediatric population, acute exacerbations of asthma are a frequent cause of presentations and hospital admissions. An acute asthma exacerbation is potentially life-threatening; it is predominantly treated using conventional oxygen therapy with bronchodilators and systemic corticosteroids. The treatment of those who do not respond to conventional therapy is escalated to noninvasive positive pressure ventilation (NIPPV) before invasive ventilation. Although NIPPV has demonstrated benefits and safety, it still has limitations such as treatment intolerance caused mainly by discomfort and complications. High-flow oxygen therapy administered through a nasal cannula (HFNC) provides respiratory support with adequate airway humidity and has demonstrated safety and benefits in clinical practice. In the present review, we discuss HFNC and variations in HFNC use, focusing on its feasibility and current evidence of using it on children with asthma exacerbations.
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Affiliation(s)
- Ke-Yun Chao
- Department of Respiratory Therapy, Fu Jen Catholic University Hospital, Fu Jen Catholic University, New Taipei City, Taiwan; School of Physical Therapy, Graduate Institute of Rehabilitation Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Hsuan Chien
- Department of Pediatrics, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Shu-Chi Mu
- Department of Pediatrics, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan.
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22
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Willer RJ, Johnson MD, Cipriano FA, Stone BL, Nkoy FL, Chaulk DC, Knochel ML, Kawai CK, Neiswender KL, Coon ER. Implementation of a Weight-Based High-Flow Nasal Cannula Protocol for Children With Bronchiolitis. Hosp Pediatr 2021; 11:891-895. [PMID: 34234010 DOI: 10.1542/hpeds.2021-005814] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To determine if the implementation of a weight-based high-flow nasal cannula (HFNC) protocol for infants with bronchiolitis was associated with improved outcomes, including decreased ICU use. METHODS We implemented a weight-based HFNC protocol across a tertiary care children's hospital and 2 community hospitals that admit pediatric patients on HFNC. We included all patients who were <2 years old and had a discharge diagnosis of bronchiolitis or viral pneumonia during the preimplementation (November 2013 to April 2018) and postimplementation (November 2018 to April 2020) respiratory seasons. Data were analyzed by using an interrupted time series approach. The primary outcome measure was the proportion of patients treated in the ICU. Patients with a complex chronic condition were excluded. RESULTS Implementation of the weight-based HFNC protocol was associated with an immediate absolute decrease in ICU use of 4.0%. We also observed a 6.2% per year decrease in the slope of ICU admissions pre- versus postintervention. This was associated with an immediate reduction in median cost per bronchiolitis encounter of $661, a 2.3% immediate absolute reduction in the proportion of patients who received noninvasive ventilation, and a 3.4% immediate absolute reduction in the proportion of patients who received HFNC. CONCLUSIONS A multicenter, weight-based HFNC protocol was associated with decreased ICU use and noninvasive ventilation use. In hospitals where HFNC is used in non-ICU units, weight-based approaches may lead to improved resource use.
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Affiliation(s)
- Robert J Willer
- School of Medicine, University of Utah and Primary Children's Hospital, Salt Lake City, Utah
| | - Michael D Johnson
- School of Medicine, University of Utah and Primary Children's Hospital, Salt Lake City, Utah
| | - Frank A Cipriano
- School of Medicine, University of Utah and Primary Children's Hospital, Salt Lake City, Utah
| | - Bryan L Stone
- School of Medicine, University of Utah and Primary Children's Hospital, Salt Lake City, Utah
| | - Flory L Nkoy
- School of Medicine, University of Utah and Primary Children's Hospital, Salt Lake City, Utah
| | - David C Chaulk
- School of Medicine, University of Utah and Primary Children's Hospital, Salt Lake City, Utah
| | - Miguel L Knochel
- School of Medicine, University of Utah and Primary Children's Hospital, Salt Lake City, Utah
| | | | | | - Eric R Coon
- School of Medicine, University of Utah and Primary Children's Hospital, Salt Lake City, Utah
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23
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Milési C, Baleine J, Cambonie G. Reply. J Pediatr 2021; 234:289-290. [PMID: 33766535 DOI: 10.1016/j.jpeds.2021.03.029] [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: 03/10/2021] [Accepted: 03/18/2021] [Indexed: 11/26/2022]
Affiliation(s)
- Christophe Milési
- Pediatric Intensive Care Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Julien Baleine
- Pediatric Intensive Care Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Gilles Cambonie
- Pediatric Intensive Care Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France; Pathogenesis and Control of Chronic Infection, INSERM UMR 1058, University of Montpellier, Montpellier, France
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ONGUN EA, DURSUN O, ANIL AB, ALTUĞ Ü, TEMEL KÖKSOY Ö, AKYILDIZ BN, ÖZSOYLU S, KENDİRLİ T, ÖZCAN S, YILDIZDAŞ RD, TOLUNAY İ, KARAPINAR B, KILINÇ MA, DEMİRKOL D. A multicentered study on efficiency of noninvasive ventilation procedures (SAFE-NIV). Turk J Med Sci 2021; 51:1159-1171. [PMID: 33512813 PMCID: PMC8283467 DOI: 10.3906/sag-2004-35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 01/28/2021] [Indexed: 11/22/2022] Open
Abstract
Background/aim To characterize the clinical course of noninvasive positive pressure ventilation (NIPPV) and high flow humidified nasal cannula ventilation (HFNC) procedures; perform risk analysis for ventilation failure. Material and methods This prospective, multi-centered, observational study was conducted in 352 PICU admissions (1 month-18 years) between 2016 and 2017. SPSS-22 was used to assess clinical data, define thresholds for ventilation parameters and perform risk analysis. Results Patient age, onset of disease, previous intubation and hypoxia influenced the choice of therapy mode: NIPPV was preferred in older children (p = 0.002) with longer intubation (p < 0.001), ARDS (p = 0.001), lower respiratory tract infections (p < 0.001), chronic respiratory disease, (p = 0.005), malignancy (p = 0.048) and immune deficiency (p = 0.026). The failure rate was 13.4%. sepsis, ARDS, prolonged intubation, and use of nasal masks were associated with NIV failure (p = 0.001, p < 0.001, p < 0.001, p = 0.025). The call of intubation or re-intubation was given due to respiratory failure in twenty-seven (57.5%), hemodynamic instability in eight (17%), bulbar dysfunction or aspiration in 5 (10.6%), neurological deterioration in 4 (8.5%) and developing ARDS in 3 (6.4%) children. A reduction of less than 10% in the respiration within an hour increased the odds of failure by 9.841 times (OR: 9.841, 95% CI: 2.0021–48.3742). FiO2 > 55% at 6th hours and PRISM-3 >8 were other failure predictors. Of the 9.9% complication rate, the most common complication was pressure ulcerations (4.8%) and mainly observed when using full-face masks (p = 0.047). Fifteen (4.3%) patients died of miscellaneous causes. Tracheostomy cannulation was performed on 16 children due to prolonged mechanical ventilation (8% in NIPPV, 2.6% in HFNC) Conclusion Absence of reduction in the respiration rate within an hour, FiO2 requirement >55% at 6th hours and PRISM-3 score >8 predict NIV failure.
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Affiliation(s)
- Ebru Atike ONGUN
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, Akdeniz University AntalyaTurkey
| | - Oğuz DURSUN
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, Akdeniz University AntalyaTurkey
| | - Ayşe Berna ANIL
- Division of Pediatric Critical Care, Faculty of Medicine, Department of Pediatrics, İzmir Katip Celebi University and Tepecik Research and Training Hospital, İzmirTurkey
| | - Ümit ALTUĞ
- Division of Pediatric Critical Care, Faculty of Medicine, Department of Pediatrics, İzmir Katip Celebi University and Tepecik Research and Training Hospital, İzmirTurkey
| | - Özlem TEMEL KÖKSOY
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, Samsun Ondokuz Mayıs University, SamsunTurkey
| | - Başak Nur AKYILDIZ
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, Erciyes University, KayseriTurkey
| | - Serkan ÖZSOYLU
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, Erciyes University, KayseriTurkey
| | - Tanıl KENDİRLİ
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, Ankara University, AnkaraTurkey
| | - Serhan ÖZCAN
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, Ankara University, AnkaraTurkey
| | - Rıza Dinçer YILDIZDAŞ
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, Çukurova University, AdanaTurkey
| | - İlknur TOLUNAY
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, Çukurova University, AdanaTurkey
| | - Bülent KARAPINAR
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, Ege University, İzmirTurkey
| | - Mehmet Arda KILINÇ
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, Ege University, İzmirTurkey
| | - Demet DEMİRKOL
- Division of Pediatric Critical Care, Department of Pediatrics, Faculty of Medicine, İstanbul University, İstanbulTurkey
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Nascimento MS, Quinto DER, Zamberlan GC, Santos AZD, Rebello CM, Prado CD. High-flow nasal cannula failure: can clinical outcomes determine early interruption? EINSTEIN-SAO PAULO 2021; 19:eAO5846. [PMID: 34133643 PMCID: PMC8225260 DOI: 10.31744/einstein_journal/2021ao5846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 11/11/2020] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE To evaluate the evolution of clinical outcomes in children with bronchiolitis who used a high-flow nasal cannula, and to determine after long of non-clinical improvement the therapy should be discontinued, and treatment should be escalated to other forms of ventilatory support. METHODS An observational retrospective study of infants with bronchiolitis who used a high-flow nasal cannula. Patients were divided into two study groups according to success or failure of high-flow nasal cannula therapy, namely the Success Group and the Failure Group. The main demographics and clinical variables were assessed 30 minutes and 6 hours after initiating therapy until removal of the high-flow nasal cannula. RESULTS A total of 83 children were studied and 18 children (21.7%) failed therapy. Among subjects with successful therapy, a significant decrease in respiratory rate (p<0.001), and a significant increase in peripheral oxygen saturation (p<0.001) were observed within 30 minutes. The Success Group was significantly different from the Failure Group after 6 hours, for both respiratory rate (p<0.01) and peripheral oxygen saturation (p<0.01). CONCLUSION The absence of clinical sign improvement within 30 minutes and for up to a maximum of 6 hours can be considered as failure of the high-flow nasal cannula therapy. If this time elapses with no improvements, escalating to another type of ventilatory support should be considered.
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Pelletier JH, Au AK, Fuhrman D, Clark RSB, Horvat C. Trends in Bronchiolitis ICU Admissions and Ventilation Practices: 2010-2019. Pediatrics 2021; 147:peds.2020-039115. [PMID: 33972381 PMCID: PMC8785748 DOI: 10.1542/peds.2020-039115] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/10/2021] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES To determine the changes in ICU admissions, ventilatory support, length of stay, and cost for patients with bronchiolitis in the United States. METHODS Retrospective cross-sectional study of the Pediatric Health Information Systems database. All patients age <2 years admitted with bronchiolitis and discharged between January 1, 2010 and December 31, 2019, were included. Outcomes included proportions of annual ICU admissions, invasive mechanical ventilation (IMV), noninvasive ventilation (NIV), and cost. RESULTS Of 203 859 admissions for bronchiolitis, 39 442 (19.3%) were admitted to an ICU, 6751 (3.3%) received IMV, and 9983 (4.9%) received NIV. ICU admissions for bronchiolitis doubled from 11.7% in 2010 to 24.5% in 2019 (P < .001 for trend), whereas ICU admissions for all children in Pediatric Health Information Systems <2 years of age increased from 16.0% to 21.1% during the same period (P < .001 for trend). Use of NIV increased sevenfold from 1.2% in 2010 to 9.5% in 2019 (P < .001 for trend). Use of IMV did not significantly change (3.3% in 2010 to 2.8% in 2019, P = .414 for trend). In mixed-effects multivariable logistic regression, discharge year was a significant predictor of NIV (odds ratio: 1.24; 95% confidence interval [CI]: 1.23-1.24) and ICU admission (odds ratio: 1.09; 95% CI: 1.09-1.09) but not IMV (odds ratio: 1.00; 95% CI: 1.00-1.00). CONCLUSIONS The proportions of children with bronchiolitis admitted to an ICU and receiving NIV have substantially increased, whereas the proportion receiving IMV is unchanged over the past decade. Further study is needed to better understand the factors underlying these temporal patterns.
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Affiliation(s)
- Jonathan H. Pelletier
- Division of Pediatric Critical Care Medicine,
Department Critical Care Medicine, and
| | - Alicia K. Au
- Division of Pediatric Critical Care Medicine,
Department Critical Care Medicine, and
| | - Dana Fuhrman
- Division of Pediatric Critical Care Medicine,
Department Critical Care Medicine, and
| | - Robert S. B. Clark
- Division of Pediatric Critical Care Medicine,
Department Critical Care Medicine, and
| | - Christopher Horvat
- Division of Pediatric Critical Care Medicine, Department Critical Care Medicine, and .,Division of Health Informatics, Department of Pediatrics, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania
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27
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Milési C, Requirand A, Douillard A, Baleine J, Nogué E, Matecki S, Amedro P, Pons-Odena M, Cambonie G. Assessment of Peak Inspiratory Flow in Young Infants with Acute Viral Bronchiolitis: Physiological Basis for Initial Flow Setting in Patients Supported with High-Flow Nasal Cannula. J Pediatr 2021; 231:239-245.e1. [PMID: 33333115 DOI: 10.1016/j.jpeds.2020.12.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 11/20/2020] [Accepted: 12/10/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To assess the inspiratory demand in young infants with acute viral bronchiolitis to provide a physiological basis for initial flow setting for patients supported with high flow nasal cannula. STUDY DESIGN Prospective study in 44 infants up to 6 months old with acute viral bronchiolitis, admitted to a pediatric intensive care unit from November 2017 to March 2019. Airflow measurements were performed using spirometry. The primary endpoint was the inspiratory demand as measured by peak tidal inspiratory flow (PTIF). The secondary endpoints were the relationships determined between PTIF, patient weight, and disease severity. RESULTS Median (Q25-Q75) age and weight of the patients were 37 (20-67) days and 4.3 (3.5-5.0) kg, respectively. Mean PTIF was 7.45 (95% CI 6.51-8.39, min-max: 2.40-16.00) L/minute. PTIF indexed to weight was 1.68 (95% CI 1.51-1.85, min-max: 0.67-3.00) L/kg/minute. PTIF was <2.5 L/kg/minute in 89% (95% CI 75-96) of infants. PTIF was correlated with weight (ρ= 0 .55, P < .001) but not with markers of disease severity, including modified Woods clinical asthma score, Silverman-Andersen score, respiratory rate, fraction of inspired oxygen, and PCO2. CONCLUSIONS High flow nasal cannula therapy is used commonly to support infants with acute viral bronchiolitis. The efficiency of the device is optimal if the flow setting matches the patient's inspiratory demand. According to our results, a flow rate of <2.5 L/kg/minute would be appropriate in most situations.
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Affiliation(s)
- Christophe Milési
- Pediatric Intensive Care Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Centre, Montpellier, France
| | - Anne Requirand
- Pediatric Functional Exploration Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Aymeric Douillard
- Department of Medical Information, Montpellier University Hospital Center, Montpellier, France
| | - Julien Baleine
- Pediatric Intensive Care Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Centre, Montpellier, France
| | - Erika Nogué
- Department of Medical Information, Montpellier University Hospital Center, Montpellier, France
| | - Stephan Matecki
- Pediatric Functional Exploration Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France; PHYMEDEXP, CNRS UMR 9214, INSERM U1046, University of Montpellier, Montpellier, France
| | - Pascal Amedro
- PHYMEDEXP, CNRS UMR 9214, INSERM U1046, University of Montpellier, Montpellier, France; Pediatric Cardiology and Pulmonology Department, M3C Regional Reference Center, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Marti Pons-Odena
- Pediatric Intensive Care Unit, Sant Joan de Deu University Hospital Center, University of Barcelona, Esplugues de Llobregat, Barcelona, Spain
| | - Gilles Cambonie
- Pediatric Intensive Care Unit, Arnaud de Villeneuve Hospital, Montpellier University Hospital Centre, Montpellier, France; Pathogenesis and Control of Chronic Infection, INSERM UMR 1058, University of Montpellier, Montpellier, France.
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28
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Christophe M, Julien B, Gilles C. Improving synchrony in young infants supported by noninvasive ventilation for severe bronchiolitis: Yes, we can… so we should! Pediatr Pulmonol 2021; 56:319-322. [PMID: 33270991 DOI: 10.1002/ppul.25184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 11/01/2020] [Accepted: 11/15/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Milési Christophe
- Department of Neonatal Medicine and Pediatric Intensive Care, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Baleine Julien
- Department of Neonatal Medicine and Pediatric Intensive Care, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
| | - Cambonie Gilles
- Department of Neonatal Medicine and Pediatric Intensive Care, Arnaud de Villeneuve Hospital, Montpellier University Hospital Center, Montpellier, France
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29
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Franklin D, Shellshear D, Babl FE, Hendrickson R, Williams A, Gibbons K, McEnery K, Kennedy M, Pham TM, Acworth J, Levitt D, Oakley E, Schibler A. High flow in children with respiratory failure: A randomised controlled pilot trial - A paediatric acute respiratory intervention study. J Paediatr Child Health 2021; 57:273-281. [PMID: 33377568 DOI: 10.1111/jpc.15259] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 10/07/2020] [Accepted: 10/24/2020] [Indexed: 11/28/2022]
Abstract
AIMS High-flow is increasingly used in children with acute hypoxaemic respiratory failure (AHRF), despite limited evidence. The primary feasibility endpoint for this pilot-study was the proportion of treatment failure, secondary outcomes being intensive care unit (ICU) admissions and proportion of patients requiring escalation of care. We measured duration of hospital stay, duration of oxygen therapy and rates of ICU admission. METHODS An open-labelled randomised controlled trial feasibility design was used in two tertiary children's hospitals in the emergency department and general wards. Children aged 0-16 years with AHRF were randomised (1:1) to either high-flow or standard-oxygen. Children on standard-oxygen received rescue high-flow in general wards if failure criteria were met. RESULTS Of 563 randomised, 283 received high-flow and 280 standard-oxygen with no adverse events. The proportion of children who failed treatment and receiving escalation of care was 11.7% (32/283 children) on high-flow and 18.1% (50/280 infants) on standard-oxygen (odds ratio 0.68, 95% confidence interval 0.38-1.00). In children with obstructive airway disease, 9.7% on high-flow and 17.4% on standard-oxygen required escalation (risk-difference -7.7% percentage points; 95% confidence interval -14.3, -1.1); in children with non-obstructive disease no difference was observed. Neither difference in ICU admissions nor any difference in length of hospital stay was observed. Sixty percent of children who failed standard-oxygen responded to rescue high-flow. CONCLUSION High-flow outside ICU appears to be feasible in children with AHRF and the required proportion of escalation was lower compared to standard-oxygen. The trial design can be applied in a future large randomised controlled trial.
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Affiliation(s)
- Donna Franklin
- Gold Coast University Hospital, Emergency Department Collaborative Research Group, Southport, Australia.,The University of Queensland, Paediatric Critical Care Research Group, Child Health Research Centre, School of Medicine, South Brisbane, Australia.,PREDICT (Paediatric Research in Emergency Departments International Collaborative), Parkville, Victoria, Australia
| | - Deborah Shellshear
- Queensland Children's Hospital, Brisbane, Australia.,PREDICT (Paediatric Research in Emergency Departments International Collaborative), Parkville, Victoria, Australia.,Paediatric Emergency Department, Children's Health Queensland and Health Services, Brisbane, Queensland, Australia
| | - Franz E Babl
- PREDICT (Paediatric Research in Emergency Departments International Collaborative), Parkville, Victoria, Australia.,Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria, Australia.,Emergency Department, Royal Children's Hospital, Melbourne, Victoria, Australia.,Emergency Research, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
| | - Rikki Hendrickson
- Queensland Children's Hospital, Brisbane, Australia.,Paediatric Emergency Department, Children's Health Queensland and Health Services, Brisbane, Queensland, Australia
| | - Amanda Williams
- PREDICT (Paediatric Research in Emergency Departments International Collaborative), Parkville, Victoria, Australia.,Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria, Australia.,Emergency Department, Royal Children's Hospital, Melbourne, Victoria, Australia.,Emergency Research, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
| | - Kristen Gibbons
- The University of Queensland, Paediatric Critical Care Research Group, Child Health Research Centre, School of Medicine, South Brisbane, Australia.,Mater Research Institute, The University of Queensland, Brisbane, Queensland, Australia
| | - Kate McEnery
- The University of Queensland, Paediatric Critical Care Research Group, Child Health Research Centre, School of Medicine, South Brisbane, Australia
| | - Melanie Kennedy
- Queensland Children's Hospital, Brisbane, Australia.,The University of Queensland, Paediatric Critical Care Research Group, Child Health Research Centre, School of Medicine, South Brisbane, Australia
| | - Trang Mt Pham
- The University of Queensland, Paediatric Critical Care Research Group, Child Health Research Centre, School of Medicine, South Brisbane, Australia
| | - Jason Acworth
- Queensland Children's Hospital, Brisbane, Australia.,PREDICT (Paediatric Research in Emergency Departments International Collaborative), Parkville, Victoria, Australia.,Paediatric Emergency Department, Children's Health Queensland and Health Services, Brisbane, Queensland, Australia
| | - David Levitt
- Queensland Children's Hospital, Brisbane, Australia.,Department of Paediatrics, Children's Health Queensland and Health Services, South Brisbane, Queensland, Australia
| | - Ed Oakley
- PREDICT (Paediatric Research in Emergency Departments International Collaborative), Parkville, Victoria, Australia.,Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria, Australia.,Emergency Department, Royal Children's Hospital, Melbourne, Victoria, Australia.,Emergency Research, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
| | - Andreas Schibler
- Queensland Children's Hospital, Brisbane, Australia.,The University of Queensland, Paediatric Critical Care Research Group, Child Health Research Centre, School of Medicine, South Brisbane, Australia.,PREDICT (Paediatric Research in Emergency Departments International Collaborative), Parkville, Victoria, Australia
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30
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Russi BW, Lew A, McKinley SD, Morrison JM, Sochet AA. High-flow nasal cannula and bilevel positive airway pressure for pediatric status asthmaticus: a single center, retrospective descriptive and comparative cohort study. J Asthma 2021; 59:757-764. [PMID: 33401990 DOI: 10.1080/02770903.2021.1872085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
INTRODUCTION We aimed to describe patient characteristics and clinical outcomes for children hospitalized for status asthmaticus (SA) receiving high-flow nasal cannula (HFNC) or bilevel positive airway pressure (BiPAP). METHODS We performed a single center, retrospective cohort study among 39 children admitted for SA aged 5-17 years from January 2016 to May 2019 to a quaternary pediatric intensive care unit (PICU). Cohorts were defined by BiPAP versus HFNC exposure and assessed to determine if differences existed in demographics, anthropometrics, comorbidities, asthma severity indices, historical factors, duration of noninvasive ventilation, and asthma-related clinical outcomes (i.e. length of stay, mechanical ventilation rates, exposure to concurrent sedatives/anxiolysis, and rate of adjunctive therapy exposure). RESULTS Thirty-three percent (n = 13) received HFNC (33%) and 67% (n = 26) BiPAP. Children receiving BiPAP had greater age (10.9 ± 3.7 vs. 6.8 ± 2.2 years, P < 0.01), asthma severity (proportion with severe NHLBI classification: 38% vs. 0%, P < 0.01; median pediatric asthma severity score: 13[12,14] vs. 10[9,12], P < 0.01), previous PICU admissions (62% vs. 15%, P = 0.01), frequency of prescribed anxiolysis/sedation (42% vs. 8%, P = 0.02), and median duration of continuous albuterol (1.7[1,3.1] vs. 0.9[0.7,1.6] days, P = 0.03) compared to those on HFNC. Those on HFNC more commonly were treated comorbid bacterial pneumonia (69% vs. 19%, P < 0.01). No differences in NIV duration, mortality, mechanical ventilation rates, or LOS were observed. CONCLUSIONS Our data suggest a trial of BiPAP or HFNC appears well tolerated in children with SA. Prospective trials are needed to establish modality superiority and identify patient or clinical characteristics that prompt use of HFNC over BiPAP.
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Affiliation(s)
| | - Alicia Lew
- University of South Florida, Tampa, FL, USA
| | | | - John M Morrison
- Johns Hopkins All Children's Hospital, St. Petersburg, FL, USA.,Johns Hopkins University, Baltimore, MD, USA
| | - Anthony A Sochet
- University of South Florida, Tampa, FL, USA.,Johns Hopkins All Children's Hospital, St. Petersburg, FL, USA.,Johns Hopkins University, Baltimore, MD, USA
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31
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Zhao X, Qin Q, Zhang X. Outcomes of High-Flow Nasal Cannula Vs. Nasal Continuous Positive Airway Pressure in Young Children With Respiratory Distress: A Systematic Review and Meta-Analysis. Front Pediatr 2021; 9:759297. [PMID: 34805049 PMCID: PMC8602879 DOI: 10.3389/fped.2021.759297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/13/2021] [Indexed: 11/23/2022] Open
Abstract
Background: Continuous positive airway pressure (CPAP) has been associated with a lower risk of treatment failure than high-flow nasal cannula (HFNC) in pediatric patients with respiratory distress and severe hypoxemia. However, the publication of new trials on children younger than 2 years warrants a review and updated meta-analysis of the evidence. Methods: We conducted a systematic search in the PubMed, Scopus, and Google scholar databases for randomized controlled trials (RCTs) in pediatric patients with acute respiratory distress that examined outcomes of interest by the two usual management modalities (CPAP and HFNC). We used pooled adjusted relative risks (RRs) to present the strength of association for categorical outcomes and weighted mean differences (WMDs) for continuous outcomes. Results: We included data from six articles in the meta-analysis. The quality of the studies was deemed good. Included studies had infants with either acute viral bronchiolitis or pneumonia. Compared to CPAP, HFNC treatment carried a significantly higher risk of treatment failure [RR, 1.45; 95% CI, 1.06 to 1.99; I 2 = 0.0%, n = 6]. Patients receiving HFNC had a lower risk of adverse events, mainly nasal trauma [RR, 0.30; 95% CI, 0.14 to 0.62; I 2 = 0.0%, n = 2] than the others. The risk of mortality [RR, 3.33; 95% CI, 0.95, 11.67; n = 1] and need for intubation [RR, 1.69; 95% CI, 0.97, 2.94; I 2 = 0.0%, n = 5] were statistically similar between the two management strategies; however, the direction of the pooled effect sizes is indicative of a nearly three times higher mortality and two times higher risk of intubation in those receiving HFNC. We found no statistically significant differences between the two management modalities in terms of modified woods clinical asthma score (M-WCAS; denoting severity of respiratory distress) and hospitalization length (days). Patients receiving HFNC had the time to treatment failure reduced by approximately 3 h [WMD, -3.35; 95% CI, -4.93 to -1.76; I 2 = 0.0%, n = 2] compared to those on CPAP. Conclusions: Among children with respiratory distress younger than 2 years, HFNC appears to be associated with higher risk of treatment failure and possibly, an increased risk of need for intubation and mortality. Adequately powered trials are needed to confirm which management strategy is better.
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Affiliation(s)
- Xueqin Zhao
- Department of Pediatric, Northern Jiangsu People's Hospital, Yangzhou, China
| | - Qiaozhi Qin
- Department of Pediatric, Northern Jiangsu People's Hospital, Yangzhou, China
| | - Xian Zhang
- Department of Pediatric, Northern Jiangsu People's Hospital, Yangzhou, China
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32
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Chang CC, Lin YC, Chen TC, Lin JJ, Hsia SH, Chan OW, Lee EP. High-Flow Nasal Cannula Therapy in Children With Acute Respiratory Distress With Hypoxia in A Pediatric Intensive Care UnitA Single Center Experience. Front Pediatr 2021; 9:664180. [PMID: 34026694 PMCID: PMC8139340 DOI: 10.3389/fped.2021.664180] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 04/06/2021] [Indexed: 11/13/2022] Open
Abstract
Aim: High-flow nasal cannulas (HFNCs) show potential in the application of positive pressure, improving gas exchange, and decreasing work of breathing in patients with acute respiratory distress. The aims of this study were to elucidate the indications for HFNC therapy in children of all ages and diagnoses, and to evaluate the efficacy and risk factors for failure of HFNC therapy in children with acute respiratory distress with hypoxia in a pediatric intensive care unit. Methods: We conducted this retrospective cohort study at a tertiary pediatric intensive care unit between January 1, 2018 and December 31, 2020. All children, from 1 month to 18 years of age, with acute respiratory distress with hypoxia and HFNC therapy were eligible. The clinical data were reviewed. Results: One hundred and two children met the eligibility criteria for the study, of whom 57 (55.9%) were male, and the mean age was 7.00 6.79 years. Seventy-eight (76.5%) of the children had underlying disorders. The most common indications for the use of HFNC therapy were pneumonia (40, 39.2%), sepsis-related respiratory distress (17, 16.7%), and bronchiolitis (16, 15.7%). The failure rate was 15.7% (16 of 102 children). Higher initial and maximum fraction of inspiration O2 levels and lower initial and lowest SpO2/FiO2 (S/F) ratio were early and possible signs of failure requiring escalation of respiratory support. Conclusion: In our population, we found that HFNC therapy could be initiated as the first-line therapy for various etiologies of acute respiratory distress with hypoxia in a pediatric intensive care unit and for all age groups.
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Affiliation(s)
- Chih-Ching Chang
- Department of Respiratory Therapy, Chang Gung Children's Hospital and Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Yi-Chen Lin
- Chang Gung University School of Medicine, Taoyuan, Taiwan
| | - Tzu-Chun Chen
- Chang Gung University School of Medicine, Taoyuan, Taiwan
| | - Jainn-Jim Lin
- Department of Respiratory Therapy, Chang Gung Children's Hospital and Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.,Chang Gung University School of Medicine, Taoyuan, Taiwan.,Division of Pediatric Critical Care Medicine and Pediatric Neurocritical Care Center, Chang Gung Children's Hospital and Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.,Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Shao-Hsuan Hsia
- Department of Respiratory Therapy, Chang Gung Children's Hospital and Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.,Chang Gung University School of Medicine, Taoyuan, Taiwan.,Division of Pediatric Critical Care Medicine and Pediatric Neurocritical Care Center, Chang Gung Children's Hospital and Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Oi-Wa Chan
- Department of Respiratory Therapy, Chang Gung Children's Hospital and Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.,Chang Gung University School of Medicine, Taoyuan, Taiwan.,Division of Pediatric Critical Care Medicine and Pediatric Neurocritical Care Center, Chang Gung Children's Hospital and Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - En-Pei Lee
- Department of Respiratory Therapy, Chang Gung Children's Hospital and Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.,Chang Gung University School of Medicine, Taoyuan, Taiwan.,Division of Pediatric Critical Care Medicine and Pediatric Neurocritical Care Center, Chang Gung Children's Hospital and Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
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Harduin C, Allaouchiche B, Nègre J, Goy-Thollot I, Barthélemy A, Fougeray A, Baudin F, Bonnet-Garin JM, Pouzot-Nevoret C. Impact of flow and temperature on non-dyspnoeic dogs' tolerance undergoing high-flow oxygen therapy. J Small Anim Pract 2020; 62:265-271. [PMID: 33346390 DOI: 10.1111/jsap.13284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/06/2020] [Accepted: 11/26/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To prospectively describe the impact of gas flow rate and temperature on dog's tolerance of high-flow nasal oxygen therapy during recovery from anaesthesia, hypothesizing that higher flow rates and temperatures will decrease tolerance. MATERIALS AND METHODS Twelve non-dyspnoeic client-owned dogs recovering from general anaesthesia were included in this study. After extubation, a nasal cannula was positioned and high-flow nasal oxygen therapy was initiated. Two flow rates (two or four time the theoretical minute ventilation: HF2 and HF4), each of them combined with two temperatures (31 and 37°C: T31 and T37), were randomly applied (four conditions per dog). For each condition, cardiovascular and respiratory parameters (heart rate, respiratory rate, systolic arterial blood pressure and pulse oximeter oxygen saturation), sedation score and tolerance score were recorded at initiation (T0 ) and after 10 minutes of accommodation (T10 ). RESULTS Sedation scores were not significantly different between the four conditions. Cardiovascular and respiratory parameters were not significantly different between any condition at both T0 and T10 . Tolerance scores were good and not significantly different between any flow rate or temperature (HF2-T31: 4 (2-4), HF4-T31: 4 (2-4), HF2-T37: 4 (2-4), HF4-T37: 4 (1-4)). CLINICAL SIGNIFICANCE The gas flow rates and temperatures studied have no impact on tolerance during the recovery period of non-dyspnoeic dogs, and high-flow nasal cannula is well tolerated. Further studies are required to confirm these results in dyspnoeic dogs.
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Affiliation(s)
- C Harduin
- Intensive Care Unit (SIAMU), Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France.,Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France
| | - B Allaouchiche
- Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France.,Hospices Civils de Lyon, Centre Hospitalier Lyon-Sud, Service de Réanimation, Pierre-Bénite, F-69310, France
| | - J Nègre
- Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France.,Hospices Civils de Lyon, Centre Hospitalier Lyon-Sud, Service de Réanimation, Pierre-Bénite, F-69310, France
| | - I Goy-Thollot
- Intensive Care Unit (SIAMU), Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France.,Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France
| | - A Barthélemy
- Intensive Care Unit (SIAMU), Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France.,Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France
| | - A Fougeray
- Intensive Care Unit (SIAMU), Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France
| | - F Baudin
- Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France.,Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Service de Réanimation Pédiatrique, Bron, F- 69500, France
| | - J M Bonnet-Garin
- Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France
| | - C Pouzot-Nevoret
- Intensive Care Unit (SIAMU), Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France.,Université de Lyon, VetAgro Sup, APCSe, Marcy l'Etoile, F-69280, France
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34
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Kamit F, Anil M, Anil AB, Berksoy E, Gokalp G. Preemptive high-flow nasal cannula treatment in severe bronchiolitis: Results from a high-volume, resource-limited pediatric emergency department. Pediatr Int 2020; 62:1339-1345. [PMID: 32469101 DOI: 10.1111/ped.14325] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 05/13/2020] [Accepted: 05/22/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND The aims of this study were to evaluate the outcomes of patients with severe bronchiolitis who received preemptive high-flow nasal cannula (HFNC) treatment according to the authors' protocol, and to identify potential baseline characteristics that might predict patients who will not benefit from HFNC. METHODS This was a retrospective chart review of patients with severe bronchiolitis, who received preemptive HFNC treatment according to the authors' protocol and who were admitted to the pediatric emergency department between January 1, 2015, and December 31, 2016. RESULTS Eighty-four patients in total were enrolled over the 2 year period. Twenty-three patients (27.3%) failed HFNC. Of these, four responded to non-invasive mechanical ventilation and 19 required subsequent invasive ventilation. According to logistic regression analysis, existence of a chronic condition, significant tachycardia, existence of dehydration, and a venous pH <7.30 at admission were found to be predictors of HFNC failure. There were no cases of pneumothorax or any other reported adverse effects related to HFNC therapy. CONCLUSIONS Preemptive HFNC treatment, complying with a preestablished protocol, might be a safe way to support patients with severe bronchiolitis in high-volume, resource-limited pediatric emergency departments. The existence of a chronic condition, significant tachycardia, dehydration, and a venous pH <7.30 at admission could be risk factors for preemptive HFNC treatment failure in severe bronchiolitis.
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Affiliation(s)
- Fulya Kamit
- Pediatric Intensive Care Unit, Tepecik Teaching and Research Hospital, Izmir, Turkey
| | - Murat Anil
- Pediatric Emergency Department, Tepecik Teaching and Research Hospital, Izmir, Turkey
| | - Ayse Berna Anil
- Pediatric Intensive Care Unit, Tepecik Teaching and Research Hospital, Izmir Katip Celebi University, Medical School, Izmir, Turkey
| | - Emel Berksoy
- Pediatric Emergency Department, Tepecik Teaching and Research Hospital, Izmir, Turkey
| | - Gamze Gokalp
- Pediatric Emergency Department, Tepecik Teaching and Research Hospital, Izmir, Turkey
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35
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Moore C, Rebstock D, Katz IM, Noga ML, Caillibotte G, Finlay WH, Martin AR. The influence of flowrate and gas density on positive airway pressure for high flow nasal cannula applied to infant airway replicas. J Biomech 2020; 112:110022. [PMID: 32942204 DOI: 10.1016/j.jbiomech.2020.110022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 07/31/2020] [Accepted: 08/26/2020] [Indexed: 01/09/2023]
Abstract
High flow nasal cannula (HFNC) therapy has been previously shown to produce positive upper airway pressures in adult and child patients. This work aimed to evaluate and quantify the effects of HFNC flowrate and gas type on airway pressures measured in vitro in infant airway replicas. Ten realistic infant airway replicas, extending from nares to trachea, were connected in turn to a lung simulator and were supplied gas flows through HFNC. Air and heliox were each provided at two weight-indexed flowrates, 1 l/min/kg and 2 l/min/kg. Pressure and lung volume were continuously measured during simulated breathing. For constant simulated patient effort, no statistically significant change in tidal volume was measured between baseline and lower or higher HFNC flowrates, nor was there any significant difference in tidal volume between air and heliox. Tracheal pressure increased with increasing HFNC flow rate, and was highly variable between airway replicas. Higher pressures were measured for air versus heliox. For air supplied at 2 l/min/kg, average airway pressures in excess of 4 cm H2O were generated, with positive end-expiratory pressure (PEEP) ranging from 2.5 to nearly 12 cm H2O across the replicas. A predictive correlation for PEEP was proposed based on supplied gas density and flow velocities exiting the cannula and nares, and was able to account for a portion of variability between airway replicas (R2 = 0.913). Additionally, PEEP was well correlated with, and predictive of, expiratory peak pressure (R2 = 0.939) and average inspiratory pressure (R2 = 0.944).
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Affiliation(s)
- Charles Moore
- Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada
| | - Douglas Rebstock
- Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada
| | - Ira M Katz
- Medical R&D, Air Liquide Santé International, Paris-Saclay Research Center, Les Loges-en-Josas, France
| | - Michelle L Noga
- Radiology and Diagnostic Imaging, University of Alberta, Edmonton, Alberta, Canada
| | - Georges Caillibotte
- Medical R&D, Air Liquide Santé International, Paris-Saclay Research Center, Les Loges-en-Josas, France
| | - Warren H Finlay
- Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada
| | - Andrew R Martin
- Mechanical Engineering, University of Alberta, Edmonton, Alberta, Canada.
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Atelectasis prevention during anaesthesia using high-flow nasal cannula therapy: A paediatric randomised trial using MRI images. Anaesth Crit Care Pain Med 2020; 39:819-824. [PMID: 33080406 DOI: 10.1016/j.accpm.2020.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/27/2020] [Accepted: 08/12/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Atelectasis frequently occurs early on during anaesthesia in children. We hypothesised that positive expiratory pressure (PEP) generated via high-flow nasal cannula (HFNC) could prevent atelectasis in non-intubated children under general anaesthesia. The objective was to compare the volume of atelectasis present in patients treated via HFNC to that of patients treated via a face bag-mask without PEP. The outcome used for this comparison was the ratio of the atelectasis volume to the total pulmonary volume. METHODS A prospective single-centre, single-blind, randomised trial was conducted in a tertiary hospital from November 2018 through May 2019. The trial subjects were infants and children between six months and six years of age who required anaesthesia for an MRI. The children were randomised to receive sevoflurane for maintenance of anaesthesia either via a classic face bag-mask or by HFNC. The atelectasis volume was measured from thoracic MRI images. The judgement criterion was the ratio of the atelectasis volume to the lung volume. RESULTS Of a trial group of 42 patients, 21 received anaesthesia via a face bag-mask and 21 via HFNC. After three patients were excluded for technical issues, the data for 39 patients were analysed. The atelectasis volume to the lung volume ratio in the HFNC group was significantly smaller than the ratio for the face bag-mask group (1.6% vs 6.8%, respectively; p=0.002). CONCLUSION HFNC was associated with a lower atelectasis lung ratio compared to using a face bag-mask during anaesthesia for children maintained with spontaneous ventilation. Registered on Clinicaltrials.gov: NCT03592589.
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MART ÖÖ, YILDIZDAŞ D, ÖZGÜR HOROZ Ö, EKİNCİ F, MISIRLIOĞLU M. Solunum sinsityal virüsü ile ilişkili bronşiyolite bağlı solunum sıkıntısı gelişen trakeostomili bir çocuk olguda Heliox tedavisi kullanımı. CUKUROVA MEDICAL JOURNAL 2020. [DOI: 10.17826/cumj.740316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Nasogastric tube, a warning sign for high-flow nasal cannula failure in infants with bronchiolitis. Sci Rep 2020; 10:15914. [PMID: 32985553 PMCID: PMC7522248 DOI: 10.1038/s41598-020-72687-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 08/31/2020] [Indexed: 11/09/2022] Open
Abstract
High-flow nasal cannula (HFNC) therapy is routinely used in the treatment of infants with bronchiolitis. This study sought to identify markers associated with failure of HFNC therapy that serve as warnings for early staging of other ventilatory support products. A retrospective study of infants with a diagnosis of bronchiolitis, receiving HFNC and admitted to the pediatric intensive care unit from January 2016 to June 2017, was conducted. The subjects were divided into two study groups according to the success or failure of HFNC therapy. Risk factors were assessed using the following variables: age, time between hospital admission and start of HFNC, equipment model, and the need for a nasogastric tube. Eighty-one infants were studied, and 18 (21.7%) of them exhibited therapy failure. The results of the logistic models showed that the chances of failure for patients requiring a nasogastric tube during HFNC use were more likely than those for patients with oral nutrition (OR = 8.17; 95% CI 2.30–28.99; p = 0.001). The HFNC failure was not associated with the device used (OR = 1.56; 95% CI 0.54–4.52; p = 0.41), time between hospital admission and HFNC installation (OR = 1.01; 95% CI 0.98–1.03; p = 0.73), or age (OR = 0.98; 95% CI 0.82–1.17; p = 0.82). Among late outcomes evaluated, the patients with therapy failure had longer total durations of O2 use (p < 0.001) and longer hospital stays (p < 0.001). The need to use a nasogastric tube during HFNC use was associated with HFNC therapy failure and can be considered as a marker of severity in children with bronchiolitis.
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39
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Riva T, Meyer J, Theiler L, Obrist D, Bütikofer L, Greif R, Nabecker S. Measurement of airway pressure during high-flow nasal therapy in apnoeic oxygenation: a randomised controlled crossover trial . Anaesthesia 2020; 76:27-35. [PMID: 32776518 DOI: 10.1111/anae.15224] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2020] [Indexed: 12/19/2022]
Abstract
It is recognised that high-flow nasal therapy can prevent desaturation during airway management. Studies in spontaneously breathing patients show an almost linear relationship between flow rate and positive airway pressure in the nasopharynx. Positive airway pressure has been suggested as one of the possible mechanisms explaining how high-flow nasal therapy works. However, data on pressures generated by high-flow nasal therapy in apnoeic adults under general anaesthesia are absent. This randomised controlled crossover trial investigated airway pressures generated by different flow rates during high-flow nasal therapy in anaesthetised and paralysed apnoeic patients, comparing pressures with closed and open mouths. Following induction of anaesthesia and neuromuscular blockade, a continuous jaw thrust was used to enable airway patency. Airway pressure was measured in the right main bronchus, the middle of the trachea and the pharynx, using a fibreoptically-placed catheter connected to a pressure transducer. Each measurement was randomised with respect to closed or open mouth and different flow rates. Twenty patients undergoing elective surgery were included (mean (SD) age 38 (18) years, BMI 25.0 (3.3) kg.m-2 , nine women, ASA physical status 1 (35%), 2 (55%), 3 (10%). While closed mouths and increasing flow rates demonstrated non-linear increases in pressure, the pressure increase was negligible with an open mouth. Airway pressures remained below 10 cmH2 O even with closed mouths and flow rates up to 80 l.min-1 ; they were not influenced by catheter position. This study shows an increase in airway pressures with closed mouths that depends on flow rate. The generated pressure is negligible with an open mouth. These data question positive airway pressure as an important mechanism for maintenance of oxygenation during apnoea.
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Affiliation(s)
- T Riva
- Department of Anaesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Switzerland
| | - J Meyer
- Department of Anaesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Switzerland
| | - L Theiler
- Department of Anaesthesia, Kantonsspital Aarau, Switzerland
| | - D Obrist
- ARTORG Center for Biomedical Engineering Research, University of Bern, Switzerland
| | | | - R Greif
- Department of Anaesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Switzerland.,School of Medicine, Sigmund Freud University Vienna, Austria
| | - S Nabecker
- Department of Anaesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Switzerland.,Department of Anaesthesia and Pain Management, Sinai Health System, University of Toronto, Canada
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40
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Ellington LE, Velásquez RB, da Fieno JT, Arrescurrenaga GM, Nielsen KR. Standardized Extubation and High Flow Nasal Cannula Training Program for Pediatric Critical Care Providers in Lima, Peru. MEDEDPORTAL : THE JOURNAL OF TEACHING AND LEARNING RESOURCES 2020; 16:10937. [PMID: 32782926 PMCID: PMC7412765 DOI: 10.15766/mep_2374-8265.10937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 01/24/2020] [Indexed: 06/11/2023]
Abstract
INTRODUCTION Acute lower respiratory tract infections are the top cause of nonneonatal mortality in children under 5 years of age. Since many resource-limited settings lack basic pediatric respiratory support modalities, introducing respiratory technology in these settings may improve survival. Unfortunately, data suggest that many interventions in these settings are not sustainable and that after several months, local staff are no longer comfortable using newly implemented technology. METHODS We aimed to create training modules for implementation of a standardized extubation process and high flow nasal cannula for physician and nurse providers at a tertiary care center in Lima, Peru. This training curriculum combined a didactic lecture with hands-on practicum and clinical case discussion over multiple sessions spanning a year. We created all materials in English and translated to Spanish for use. Participants completed evaluations after the training program to determine whether objectives were met. This training was intended for critical care providers but could be modified for other audiences. RESULTS A total of 76 providers (12 attending/fellow critical care physicians, 40 bedside nurses, eight pediatric residents, and 14 medical technicians) participated in this multiday training. Almost all (75, 99%) participants felt the objectives were clearly stated, and 70 (92%) felt objectives were met. DISCUSSION We have provided materials to help instructors set up and implement a standardized training curriculum with recommended timing and improvements based on feedback. The tools provided allow for adaptation depending on the instructors' primary objectives, language of audience (English or Spanish), and learners' level of training.
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Affiliation(s)
- Laura E. Ellington
- Fellow, Pediatric Pulmonary and Sleep Medicine, University of Washington
| | | | - José Tantaleán da Fieno
- Physician, Departmento de Cuidados Intensivos Pediátricos, Instituto Nacional de Salud del Niño
| | | | - Katie R. Nielsen
- Assistant Professor, Department of Pediatrics, Division of Critical Care Medicine, University of Washington
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Durand P, Guiddir T, Kyheng C, Blanc F, Vignaud O, Epaud R, Dugelay F, Breant I, Badier I, Degas-Bussière V, Phan F, Soussan-Banini V, Lehnert A, Mbamba C, Barrey C, Tahiri C, Decobert M, Saunier-Pernaudet M, Craiu I, Taveira M, Gajdos V. A randomised trial of high-flow nasal cannula in infants with moderate bronchiolitis. Eur Respir J 2020; 56:13993003.01926-2019. [PMID: 32381496 DOI: 10.1183/13993003.01926-2019] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 03/23/2020] [Indexed: 11/05/2022]
Abstract
BACKGROUND The objective was to determine whether high-flow nasal cannula (HFNC), a promising respiratory support in infant bronchiolitis, could reduce the proportion of treatment failure requiring escalation of care. METHODS In this randomised controlled trial, we assigned infants aged <6 months who had moderate bronchiolitis to receive either HFNC at 3 L·kg-1·min-1 or standard oxygen therapy. Crossover was not allowed. The primary outcome was the proportion of patients in treatment failure requiring escalation of care (mostly noninvasive ventilation) within 7 days following randomisation. Secondary outcomes included rates of transfer to the paediatric intensive care unit (PICU), oxygen, number of artificial nutritional support-free days and adverse events. RESULTS The analyses included 268 patients among the 2621 infants assessed for inclusion during two consecutive seasons in 17 French paediatric emergency departments. The percentage of infants in treatment failure was 14% (19 out of 133) in the study group, compared to 20% (27 out of 135) in the control group (OR 0.66, 95% CI 0.35-1.26; p=0.21). HFNC did not reduce the risk of admission to PICU (21 (15%) out of 133 in the study group versus 26 (19%) out of 135 in the control group) (OR 0.78, 95% CI 0.41-1.41; p=0.45). The main reason for treatment failure was the worsening of modified Wood clinical asthma score (m-WCAS). Short-term assessment of respiratory status showed a significant difference for m-WCAS and respiratory rate in favour of HFNC. Three pneumothoraces were reported in the study group. CONCLUSIONS In patients with moderate bronchiolitis, there was no evidence of lower rate of escalating respiratory support among those receiving HFNC therapy.
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Affiliation(s)
- Philippe Durand
- Pediatric Emergency Dept, Bicêtre University Hospital, Assistance Publique-Hôpitaux de Paris, Kremlin-Bicêtre, France
| | - Tamma Guiddir
- Pediatric Emergency Dept, Bicêtre University Hospital, Assistance Publique-Hôpitaux de Paris, Kremlin-Bicêtre, France
| | - Christèle Kyheng
- Pediatric Emergency Dept, Bicêtre University Hospital, Assistance Publique-Hôpitaux de Paris, Kremlin-Bicêtre, France
| | - Florence Blanc
- Villeneuve-Saint Georges Intercommunal Hospital, Villeneuve-Saint Georges, France
| | | | - Ralph Epaud
- Créteil Intercommunal Hospital, Créteil, France
| | | | | | | | | | | | - Valérie Soussan-Banini
- Ambroise Paré University Hospital, Assistance Publique-Hôpitaux de Paris, Boulogne-Billancourt, France
| | | | | | | | | | | | | | - Irina Craiu
- Pediatric Emergency Dept, Bicêtre University Hospital, Assistance Publique-Hôpitaux de Paris, Kremlin-Bicêtre, France
| | - Mélanie Taveira
- Antoine Béclère University Hospital, Assistance Publique-Hôpitaux de Paris, Clamart, France
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Kugelman A. High-flow nasal cannula therapy: can it be recommended as initial or rescue care for infants with moderate bronchiolitis in the paediatric ward? Eur Respir J 2020; 56:56/1/2001020. [PMID: 32675294 DOI: 10.1183/13993003.01020-2020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 04/08/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Amir Kugelman
- Dept of Neonatology and Pediatric Pulmonary Unit, Rambam Medical Center, Rappaport Faculty of Medicine, Technion, Haifa, Israel
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43
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Lyons C, Callaghan M. Apnoeic oxygenation in paediatric anaesthesia: a narrative review. Anaesthesia 2020; 76:118-127. [PMID: 32592510 DOI: 10.1111/anae.15107] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2020] [Indexed: 12/19/2022]
Abstract
Apnoeic oxygenation refers to oxygenation in the absence of any patient or ventilator effort to move the lungs. This phenomenon was first described in humans in the mid-20th century but has seen renewed interest in the last decade following the demonstration of apnoeic oxygenation with low-flow, and subsequently high-flow, nasal oxygen. This narrative review summarises our understanding of apnoeic oxygenation in the paediatric population. We examine the evidence supporting oxygenation via tracheal tube, modified laryngoscopes and nasal cannulae. The evidence for prolongation of safe apnoea time at induction of anaesthesia is also appraised. We explore the capacity for carbon dioxide clearance, flow rate selection with high-flow nasal oxygen and complications associated with the technique. It remains uncertain whether apnoeic oxygenation in paediatric patients results in a meaningful clinical benefit compared with standard care for outcomes such as the number of tracheal intubation attempts or the incidence of hypoxaemia. In particular, the role of apnoeic oxygenation in paediatric difficult airway management is unclear as this has not been the targeted focus of any published research to date.
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Affiliation(s)
- C Lyons
- Department of Anaesthesia, Children's Health Ireland at Crumlin, Dublin, Ireland
| | - M Callaghan
- Department of Anaesthesia, Galway University Hospitals, Galway, Ireland
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Abstract
OBJECTIVES This review discusses the different techniques used at the bedside to assess respiratory muscle function in critically ill children and their clinical applications. DATA SOURCES A scoping review of the medical literature on respiratory muscle function assessment in critically ill children was conducted using the PubMed search engine. STUDY SELECTION We included all scientific, peer-reviewed studies about respiratory muscle function assessment in critically ill children, as well as some key adult studies. DATA EXTRACTION Data extracted included findings or comments about techniques used to assess respiratory muscle function. DATA SYNTHESIS Various promising physiologic techniques are available to assess respiratory muscle function at the bedside of critically ill children throughout the disease process. During the acute phase, this assessment allows a better understanding of the pathophysiological mechanisms of the disease and an optimization of the ventilatory support to increase its effectiveness and limit its potential complications. During the weaning process, these physiologic techniques may help predict extubation success and therefore optimize ventilator weaning. CONCLUSIONS Physiologic techniques are useful to precisely assess respiratory muscle function and to individualize and optimize the management of mechanical ventilation in children. Among all the available techniques, the measurements of esophageal pressure and electrical activity of the diaphragm appear particularly helpful in the era of individualized ventilatory management.
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Garland H, Gunz AC, Miller MR, Lim RK. High-flow nasal cannula implementation has not reduced intubation rates for bronchiolitis in Canada. Paediatr Child Health 2020; 26:e194-e198. [PMID: 34131463 DOI: 10.1093/pch/pxaa023] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 01/28/2020] [Indexed: 12/14/2022] Open
Abstract
Background and Objective Bronchiolitis is the most common reason for admission to hospital in the first year of life, with increasing hospitalization rates in Canada. Respiratory support with high-flow nasal cannula (HFNC) is being routinely used in paediatric centres, though the evidence of efficacy is continuing to be evaluated. We examined the impact of HFNC on intubation rates, hospital and paediatric critical care unit (PCCU) length of stay (LOS), and PCCU admission rates in paediatric tertiary centres in Canada. Methods We conducted a multicentre, interrupted time series analysis to examine intubation rates pre- to postimplementation of HFNC for bronchiolitis. Data were obtained from the Canadian Institute for Health Information database. Paediatric tertiary centres that introduced HFNC between 2009 and 2014 were included, and data were collected from April 2005 to March 2017. Results A total of 17,643 patients met inclusion criteria. There was no significant change in intubation rates after the introduction of HFNC. There was a significant increase in PCCU admission, with a decrease in the PCCU LOS following the introduction of HFNC. There was no significant change in average hospital LOS after HFNC was introduced. Conclusions This study adds to the evolving evidence showing that overall disease course is not modified by the use of HFNC. The initiation of HFNC in Canadian paediatric centres resulted in no significant change in intubation rates or average LOS in hospital, but had an increase in PCCU admissions. Careful monitoring of new technologies on their clinical impact as well as health care resource utilization is warranted.
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Affiliation(s)
- Hilarie Garland
- Department of Pediatrics, Schulich School of Medicine and Dentistry, Western University, London, Ontario
| | - Anna C Gunz
- Department of Pediatrics, Schulich School of Medicine and Dentistry, Western University, London, Ontario.,Children's Health Research Institute, Western University, London, Ontario
| | - Michael R Miller
- Department of Pediatrics, Schulich School of Medicine and Dentistry, Western University, London, Ontario.,Children's Health Research Institute, Western University, London, Ontario
| | - Rodrick K Lim
- Department of Pediatrics, Schulich School of Medicine and Dentistry, Western University, London, Ontario.,Children's Health Research Institute, Western University, London, Ontario.,Department of Medicine, Division of Emergency Medicine, Schulich School of Medicine and Dentistry, Western University, London, Ontario
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46
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Humphreys S, Schibler A. Nasal high-flow oxygen in pediatric anesthesia and airway management. Paediatr Anaesth 2020; 30:339-346. [PMID: 31833137 DOI: 10.1111/pan.13782] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 12/06/2019] [Indexed: 11/29/2022]
Abstract
Nasal High-Flow (NHF) is weight-dependent in children, aimed to match peak inspiratory flow and thereby deliver an accurate FiO2 with a splinting pressure of 4-6 cm H2 O. During apnea in children, NHF oxygen can double the expected time to desaturation below 90% in well children but there is no ventilatory exchange; therefore, children do not "THRIVE". Total intravenous anesthesia competency to maintain spontaneous breathing is an important adjunct for successful NHF oxygenation technique during anesthesia. Jaw thrust to maintain a patent upper airway is paramount until surgical instrumentation occurs. There is no evidence to support safe use of NHF oxygen with LASER use due to increased risk of airway fire.
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Affiliation(s)
- Susan Humphreys
- Paediatric Critical Care Research Group, Child Health Research Centre, The University of Queensland, Brisbane, QLD, Australia.,Department of Anaesthesia and Pain Management, Queensland Children's Hospital, South Brisbane, QLD, Australia
| | - Andreas Schibler
- Paediatric Critical Care Research Group, Child Health Research Centre, The University of Queensland, Brisbane, QLD, Australia.,Paediatric Intensive Care, Queensland Children's Hospital, South Brisbane, QLD, Australia
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47
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Habra B, Janahi IA, Dauleh H, Chandra P, Veten A. A comparison between high-flow nasal cannula and noninvasive ventilation in the management of infants and young children with acute bronchiolitis in the PICU. Pediatr Pulmonol 2020; 55:455-461. [PMID: 31922360 DOI: 10.1002/ppul.24553] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Accepted: 10/12/2019] [Indexed: 11/08/2022]
Abstract
BACKGROUND Different modalities of noninvasive respiratory support have been recommended for the management of acute bronchiolitis in the pediatric intensive care unit (PICU). High-flow nasal cannula (HFNC) is among the new modalities that have been widely used in the last decade. METHODS This is a retrospective study involving infants and young children between the ages of 1 month and 2 years during the respiratory season of 2016-2017 (October-May). We compared the failure rate of HFNC with the failure rates of bi-level positive airway pressure (BiPAP) vs continuous positive airway pressure (CPAP) in the management of acute bronchiolitis in the PICU. Failure was defined as a change to another respiratory support modality or endotracheal intubation and mechanical ventilation. RESULTS One hundred thirty-seven patients met the inclusion criteria, of which 77 patients needed HFNC, 10 needed CPAP, and 50 were on BiPAP. Among baseline characteristics, there were significant variations in age among the three groups. HFNC had a higher failure rate compared with the other two noninvasive ventilation modalities (50.6% for HFNC [n = 39 out of 77] vs 0% for CPAP [n = 0 out of 10] vs 8% for BiPAP [n = 4 out of 50], P < .01). Among the 39 patients who failed HFNC, 90% were successfully shifted to BiPAP and weaned off later, whereas the other 4 were intubated and required mechanical ventilation. However, all four patients who failed BiPAP were intubated and mechanically ventilated. No respiratory complications or mortalities were reported in the three groups. No differences were observed among the three groups in terms of the lengths of PICU or hospital stays. CONCLUSIONS We observed a higher failure rate of HFNC compared with BiPAP or CPAP in the management of infants and children with acute bronchiolitis in the PICU. Further prospective randomized trials are recommended to confirm this finding.
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Affiliation(s)
- Basel Habra
- Department of Pediatric Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Ibrahim A Janahi
- Department of Pediatric Medicine, Hamad Medical Corporation, Doha, Qatar.,Department of Pediatric Medicine, Sidra Medicine, Doha, Qatar.,Weill Cornell Medicine, Doha, Qatar
| | - Hajer Dauleh
- Department of Pediatric Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Prem Chandra
- Department of Pediatric Medicine, Hamad Medical Corporation, Doha, Qatar
| | - Ahmed Veten
- Department of Pediatric Medicine, Hamad Medical Corporation, Doha, Qatar
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48
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Piper L, Stalets EL, Statile AM. Clinical Progress Note: High Flow Nasal Cannula Therapy for Bronchiolitis Outside the ICU in Infants. J Hosp Med 2020; 15:49-51. [PMID: 31891563 DOI: 10.12788/jhm.3328] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 09/06/2019] [Accepted: 09/11/2019] [Indexed: 01/24/2023]
Affiliation(s)
- Laura Piper
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Division of Hospital Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Erika L Stalets
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Division of Critical Care Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Angela M Statile
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Division of Hospital Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
- James M. Anderson Center for Health Systems Excellence, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
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49
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Liew Z, Fenton AC, Harigopal S, Gopalakaje S, Brodlie M, O’Brien CJ. Physiological effects of high-flow nasal cannula therapy in preterm infants. Arch Dis Child Fetal Neonatal Ed 2020; 105:87-93. [PMID: 31123057 PMCID: PMC6951230 DOI: 10.1136/archdischild-2018-316773] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 04/27/2019] [Accepted: 05/03/2019] [Indexed: 11/09/2022]
Abstract
OBJECTIVE High-flow nasal cannula (HFNC) therapy is increasingly used in preterm infants despite a paucity of physiological studies. We aimed to investigate the effects of HFNC on respiratory physiology. STUDY DESIGN A prospective randomised crossover study was performed enrolling clinically stable preterm infants receiving either HFNC or nasal continuous positive airway pressure (nCPAP). Infants in three current weight groups were studied: <1000 g, 1000-1500 g and >1500 g. Infants were randomised to either first receive HFNC flows 8-2 L/min and then nCPAP 6 cm H2O or nCPAP first and then HFNC flows 8-2 L/min. Nasopharyngeal end-expiratory airway pressure (pEEP), tidal volume, dead space washout by nasopharyngeal end-expiratory CO2 (pEECO2), oxygen saturation and vital signs were measured. RESULTS A total of 44 preterm infants, birth weights 500-1900 g, were studied. Increasing flows from 2 to 8 L/min significantly increased pEEP (mean 2.3-6.1 cm H2O) and reduced pEECO2 (mean 2.3%-0.9%). Tidal volume and transcutaneous CO2 were unchanged. Significant differences were seen between pEEP generated in open and closed mouth states across all HFNC flows (difference 0.6-2.3 cm H2O). Infants weighing <1000 g received higher pEEP at the same HFNC flow than infants weighing >1000 g. Variability of pEEP generated at HFNC flows of 6-8 L/min was greater than nCPAP (2.4-13.5 vs 3.5-9.9 cm H2O). CONCLUSIONS HFNC therapy produces clinically significant pEEP with large variability at higher flow rates. Highest pressures were observed in infants weighing <1000 g. Flow, weight and mouth position are all important determinants of pressures generated. Reductions in pEECO2 support HFNC's role in dead space washout.
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Affiliation(s)
- Zheyi Liew
- Paediatric Respiratory Medicine, Great North Children’s Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK,Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Alan C Fenton
- Newcastle Neonatal Service, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK,Newcastle University, Newcastle upon Tyne, UK
| | - Sundeep Harigopal
- Newcastle Neonatal Service, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK,Newcastle University, Newcastle upon Tyne, UK
| | - Saikiran Gopalakaje
- Paediatric Respiratory Medicine, Great North Children’s Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK,Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Malcolm Brodlie
- Paediatric Respiratory Medicine, Great North Children’s Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK,Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Christopher J O’Brien
- Paediatric Respiratory Medicine, Great North Children’s Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
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50
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Song KB, Kil HR, Cho EY, Lee MH, Chung EH. Effect of high flow nasal cannula treatment in children with respiratory distress at the general ward. ALLERGY ASTHMA & RESPIRATORY DISEASE 2020. [DOI: 10.4168/aard.2020.8.2.73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Kun Baek Song
- Department of Pediatrics, Chungnam National University School of Medicine, Daejeon, Korea
| | - Hong Ryang Kil
- Department of Pediatrics, Chungnam National University School of Medicine, Daejeon, Korea
| | - Eun Young Cho
- Department of Pediatrics, Chungnam National University School of Medicine, Daejeon, Korea
| | - Mi-Hee Lee
- Department of Pediatrics, Incheon Medical Center, Incheon, Korea
| | - Eun Hee Chung
- Department of Pediatrics, Chungnam National University School of Medicine, Daejeon, Korea
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