1
|
Fumagalli B, Giani M, Bombino M, Fumagalli D, Merelli M, Chiesa G, Rona R, Bellani G, Rezoagli E, Foti G. Pressure Support Ventilation During Extracorporeal Membrane Oxygenation Support in Patients With Acute Respiratory Distress Syndrome. ASAIO J 2024:00002480-990000000-00542. [PMID: 39116298 DOI: 10.1097/mat.0000000000002285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024] Open
Abstract
In the initial phases of veno-venous extracorporeal membrane oxygenation (VV ECMO) support for severe acute respiratory distress syndrome (ARDS), ultraprotective controlled mechanical ventilation (CMV) is typically employed to limit the progression of lung injury. As patients recover, transitioning to assisted mechanical ventilation can be considered to reduce the need for prolonged sedation and paralysis. This study aimed to evaluate the feasibility of transitioning to pressure support ventilation (PSV) during VV ECMO and to explore variations in respiratory mechanics and oxygenation parameters following the transition to PSV. This retrospective monocentric study included 191 adult ARDS patients treated with VV ECMO between 2009 and 2022. Within this population, 131 (69%) patients were successfully switched to PSV during ECMO. Pressure support ventilation was associated with an increase in respiratory system compliance (p = 0.02) and a reduction in pulmonary shunt fraction (p < 0.001). Additionally, improvements in the cardiovascular Sequential Organ Failure Assessment score and a reduction in pulmonary arterial pressures (p < 0.05) were recorded. Ninety-four percent of patients who successfully transitioned to PSV were weaned from ECMO, and 118 (90%) were discharged alive from the intensive care unit (ICU). Of those who did not reach PSV, 74% died on ECMO, whereas the remaining patients were successfully weaned from extracorporeal support. In conclusion, PSV is feasible during VV ECMO and potentially correlates with improvements in respiratory function and hemodynamics.
Collapse
Affiliation(s)
- Benedetta Fumagalli
- From Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Marco Giani
- From Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Department of Emergency and Intensive Care, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico San Gerardo dei Tintori, Monza, Italy
| | - Michela Bombino
- Department of Emergency and Intensive Care, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico San Gerardo dei Tintori, Monza, Italy
| | - Denise Fumagalli
- Department of Emergency and Intensive Care, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico San Gerardo dei Tintori, Monza, Italy
| | - Milena Merelli
- From Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Gaia Chiesa
- From Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Roberto Rona
- Department of Emergency and Intensive Care, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico San Gerardo dei Tintori, Monza, Italy
| | - Giacomo Bellani
- Department of Medical Sciences, University of Trento, Trento, Italy
- Department of Anesthesia and Intensive Care, Santa Chiara Hospital, Azienda Provinciale per i Servizi Sanitari di Trento, Trento, Italy
| | - Emanuele Rezoagli
- From Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Department of Emergency and Intensive Care, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico San Gerardo dei Tintori, Monza, Italy
| | - Giuseppe Foti
- From Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Department of Emergency and Intensive Care, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico San Gerardo dei Tintori, Monza, Italy
| |
Collapse
|
2
|
Gao R, Yang YL, Zhang L, Miao MY, Zhou JX. Use of pressure muscle index to guide pressure support ventilation setting: a study protocol and statistical plan for a prospective randomised controlled proof-of-concept trial. BMJ Open 2024; 14:e082395. [PMID: 39097307 PMCID: PMC11298740 DOI: 10.1136/bmjopen-2023-082395] [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: 11/23/2023] [Accepted: 07/18/2024] [Indexed: 08/05/2024] Open
Abstract
INTRODUCTION Although pressure support ventilation is one of the most commonly used assisted ventilation modes in intensive care units, there is still a lack of precise strategies for setting pressure support. By performing an end-inspiratory airway occlusion, the difference between the peak and plateau airway pressure, which is defined as pressure muscle index (PMI), can be easily measured on the ventilator screen. Previous studies have shown that PMI is accurate in detecting high and low inspiratory effort. No study has been conducted to investigate the use of PMI as an indicator for setting inspiratory pressure support. METHOD AND ANALYSIS This is a study protocol for a prospective, single-centre, randomised controlled, pilot trial. Sixty participants undergoing pressure support ventilation will be randomly assigned in a 1:1 ratio to the control group or intervention group, with pressure support adjusted according to standard care or guided by the PMI strategy for 48 hours, respectively. The feasibility of the PMI-guided strategy will be evaluated. The primary endpoint is the proportion of inspiratory effort measurements within a well-accepted 'normal' range, which is predefined as oesophageal pressure-time product per minute between 50 and 200 cmH2O⋅s/min, for each patient during 48 hours of pressure support adjustment. ETHICS AND DISSEMINATION The study protocol has been approved by Beijing Tiantan Hospital (KY2023-005-02). The data generated in the present study will be available from the corresponding author on reasonable request. The results of the trial will be submitted to international peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT05963737; ClinicalTrials.org.
Collapse
Affiliation(s)
- Ran Gao
- Department of Critical Care Medicine, Beijing Tiantan Hospital, Beijing, China
| | - Yan-Lin Yang
- Department of Critical Care Medicine, Beijing Tiantan Hospital, Beijing, China
| | - Linlin Zhang
- Department of Critical Care Medicine, Beijing Tiantan Hospital, Beijing, China
| | - Ming-Yue Miao
- Beijing Shijitan Hospital Capital Medical University, Beijing, China
| | - Jian-Xin Zhou
- Beijing Shijitan Hospital Capital Medical University, Beijing, China
| |
Collapse
|
3
|
Nascimento MS, Leite FS, Silva PAL, Zamberlan GC, de Souza PM, Eid RAC, Zacharias RSB, do Prado C, Batista CL. Reliability and reference values for diaphragmatic excursion, thickness, and thickening fraction and quadriceps femoris muscle thickness in full-term newborns evaluated by ultrasound. Eur J Pediatr 2024; 183:3453-3460. [PMID: 38771374 DOI: 10.1007/s00431-024-05608-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 05/06/2024] [Accepted: 05/11/2024] [Indexed: 05/22/2024]
Abstract
To determine the diaphragm thickness, thickening fraction, and excursion and thickness of the quadriceps femoris muscle in full-term newborns and to evaluate the intra- and interrater reliability of these measurements. This was a prospective, observational clinical study including full-term newborns born within the first 48 h after birth. Serial measurements of the thickness, thickening fraction, and mobility of the diaphragm muscles and the thickness of the quadriceps muscle were obtained using ultrasound images. A total of 69 newborns with a mean gestational age of 39 weeks were included. The following measurements were obtained and are expressed as the mean (standard deviation): inspiratory diaphragm thickness, 0.19 cm (0.04); expiratory diaphragm thickness, 0.16 cm (0.04); diaphragm thickness fraction, 16.70 cm (10.27); diaphragmatic excursion, 0.68 cm (0.22); and quadriceps thickness, 0.99 cm (0.14). Intrarater reliability was assessed using intraclass correlation coefficients (ICCs). Excellent intrarater agreement was observed for the two groups of operators (ICC > 0.86, p < 0.001) for all measurements except for the diaphragm thickening fraction, which showed good agreement for both operator groups (ICC = 0.70, p < 0.001). Regarding interrater reliability, moderate agreement between the raters was observed in the means of all measures (ICC > 0.49, p < 0.001), except for the diaphragm thickening fraction, which showed poor agreement. Conclusion: Good intrarater and moderate interrater reliability were achieved in ultrasound evaluations of the thickness and mobility of the diaphragm and quadriceps femoris muscles in full-term newborns, demonstrating the feasibility of this technique for clinical use. This pioneering study offers reference values for these muscles in a single study, allowing comparisons between different clinical conditions. What is Known: • Ultrasound is a highly reliable tool for muscle assessment that can be used to assess muscular atrophy in critically ill patients. • Muscle atrophy worsens the patient's condition and has been associated with worse outcomes. What is New: • To our knowledge, this is the first study to jointly evaluate the diaphragm and quadriceps muscle thickness and evaluate the reliability of all measurements. • Our study presents reference values for both muscles, enabling comparisons between different clinical conditions.
Collapse
Affiliation(s)
- Milena Siciliano Nascimento
- Departamento de Práticas Assistenciais, Hospital Israelita Albert Einstein, Avenue Albert Einstein, 627-701, 05651-901, São Paulo, Brazil.
| | - Flávia Sales Leite
- Departamento de Pacientes Graves, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | | | | | - Priscila Monteiro de Souza
- Departamento de Práticas Assistenciais, Hospital Israelita Albert Einstein, Avenue Albert Einstein, 627-701, 05651-901, São Paulo, Brazil
- Corpo Discente da Faculdade Israelita de Ciências da Saúde Albert Einstein, São Paulo, Brazil
| | | | | | - Cristiane do Prado
- Departamento Materno-infantil, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Carla Luciana Batista
- Departamento de Pacientes Graves, Hospital Israelita Albert Einstein, São Paulo, Brazil
| |
Collapse
|
4
|
Goodfellow LT, Miller AG, Varekojis SM, LaVita CJ, Glogowski JT, Hess DR. AARC Clinical Practice Guideline: Patient-Ventilator Assessment. Respir Care 2024; 69:1042-1054. [PMID: 39048148 PMCID: PMC11298231 DOI: 10.4187/respcare.12007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Given the important role of patient-ventilator assessments in ensuring the safety and efficacy of mechanical ventilation, a team of respiratory therapists and a librarian used Grading of Recommendations, Assessment, Development, and Evaluation methodology to make the following recommendations: (1) We recommend assessment of plateau pressure to ensure lung-protective ventilator settings (strong recommendation, high certainty); (2) We recommend an assessment of tidal volume (VT) to ensure lung-protective ventilation (4-8 mL/kg/predicted body weight) (strong recommendation, high certainty); (3) We recommend documenting VT as mL/kg predicted body weight (strong recommendation, high certainty); (4) We recommend an assessment of PEEP and auto-PEEP (strong recommendation, high certainty); (5) We suggest assessing driving pressure to prevent ventilator-induced injury (conditional recommendation, low certainty); (6) We suggest assessing FIO2 to ensure normoxemia (conditional recommendation, very low certainty); (7) We suggest telemonitoring to supplement direct bedside assessment in settings with limited resources (conditional recommendation, low certainty); (8) We suggest direct bedside assessment rather than telemonitoring when resources are adequate (conditional recommendation, low certainty); (9) We suggest assessing adequate humidification for patients receiving noninvasive ventilation (NIV) and invasive mechanical ventilation (conditional recommendation, very low certainty); (10) We suggest assessing the appropriateness of the humidification device during NIV and invasive mechanical ventilation (conditional recommendation, low certainty); (11) We recommend that the skin surrounding artificial airways and NIV interfaces be assessed (strong recommendation, high certainty); (12) We suggest assessing the dressing used for tracheostomy tubes and NIV interfaces (conditional recommendation, low certainty); (13) We recommend assessing the pressure inside the cuff of artificial airways using a manometer (strong recommendation, high certainty); (14) We recommend that continuous cuff pressure assessment should not be implemented to decrease the risk of ventilator-associated pneumonia (strong recommendation, high certainty); and (15) We suggest assessing the proper placement and securement of artificial airways (conditional recommendation, very low certainty).
Collapse
Affiliation(s)
- Lynda T Goodfellow
- Director of AARC Clinical Practice Guideline Development and is affiliated with American Association for Respiratory Care/Daedalus Enterprises, Irving, Texas, and Georgia State University, Atlanta, Georgia
| | | | | | | | | | - Dean R Hess
- Massachusetts General Hospital, Boston, Massachusetts; and Daedalus Enterprises, Irving, Texas
| |
Collapse
|
5
|
Le Marec J, Hajage D, Decavèle M, Schmidt M, Laurent I, Ricard JD, Jaber S, Azoulay E, Fartoukh M, Hraiech S, Mercat A, Similowski T, Demoule A. High Airway Occlusion Pressure Is Associated with Dyspnea and Increased Mortality in Critically Ill Mechanically Ventilated Patients. Am J Respir Crit Care Med 2024; 210:201-210. [PMID: 38319128 DOI: 10.1164/rccm.202308-1358oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 02/05/2024] [Indexed: 02/07/2024] Open
Abstract
Rationale: Airway occlusion pressure at 100 ms (P0.1) reflects central respiratory drive. Objectives: We aimed to assess factors associated with P0.1 and whether an abnormally low or high P0.1 value is associated with higher mortality and longer duration of mechanical ventilation (MV). Methods: We performed a secondary analysis of a prospective cohort study conducted in 10 ICUs in France to evaluate dyspnea in communicative MV patients. In patients intubated for more than 24 hours, P0.1 was measured with dyspnea as soon as patients could communicate and the next day. Measurements and Main Results: Among 260 patients assessed after a median time of ventilation of 4 days, P0.1 was 1.9 (1-3.5) cm H2O at enrollment, 24% had P0.1 values >3.5 cm H2O, 37% had P0.1 values between 1.5 and 3.5 cm H2O, and 39% had P0.1 values <1.5 cm H2O. In multivariable linear regression, independent factors associated with P0.1 were the presence of dyspnea (P = 0.037), respiratory rate (P < 0.001), and PaO2 (P = 0.008). Ninety-day mortality was 33% in patients with P0.1 > 3.5 cm H2O versus 19% in those with P0.1 between 1.5 and 3.5 cm H2O and 17% in those with P0.1 < 1.5 cm H2O (P = 0.046). After adjustment for the main risk factors, P0.1 was associated with 90-day mortality (hazard ratio per 1 cm H2O, 1.19 [95% confidence interval, 1.04-1.37]; P = 0.011). P0.1 was also independently associated with a longer duration of MV (hazard ratio per 1 cm H2O, 1.10 [95% confidence interval, 1.02-1.19]; P = 0.016). Conclusions: In patients receiving invasive MV, abnormally high P0.1 values may suggest dyspnea and are associated with higher mortality and prolonged duration of MV.
Collapse
Affiliation(s)
- Julien Le Marec
- Assistance Publique-Hôpitaux de Paris, 26930, Groupe Hospitalier Universitaire Assistance Publique-Hôpitaux de Paris-Sorbonne Université, Site Pitié-Salpêtrière, Service de Médecine Intensive et Réanimation (Département R3S), Paris, France
| | - David Hajage
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, Assistance Publique-Hôpitaux de Paris, Hôpital Pitié Salpêtrière, Département de Santé Publique, Centre de Pharmacoépidémiologie (Cephepi), Unité de Recherche Clinique PSL-CFX, CIC-1901, Paris, France
| | - Maxens Decavèle
- Assistance Publique-Hôpitaux de Paris, 26930, Groupe Hospitalier Universitaire Assistance Publique-Hôpitaux de Paris-Sorbonne Université, Site Pitié-Salpêtrière, Service de Médecine Intensive et Réanimation (Département R3S), Paris, France
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France
- Sorbonne Université, GRC 30, Reanimation et Soins Intensifs du Patient en Insuffisance Respiratoire Aiguë, Assistance Publique-Hôpitaux de Paris, Hôpital de la Pitié Salpêtrière, Paris, France
| | - Matthieu Schmidt
- Sorbonne Université, GRC 30, Reanimation et Soins Intensifs du Patient en Insuffisance Respiratoire Aiguë, Assistance Publique-Hôpitaux de Paris, Hôpital de la Pitié Salpêtrière, Paris, France
- Service de Médecine Intensive-Réanimation, Institut de Cardiologie, Assistance Publique-Hôpitaux de Paris Sorbonne Université Hôpital Pitié-Salpêtrière, Paris, France
- Sorbonne Université, INSERM, Research Unit on Cardiovascular Diseases, Metabolism and Nutrition, ICAN, Paris, France
| | - Isaura Laurent
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, Assistance Publique-Hôpitaux de Paris, Hôpital Pitié Salpêtrière, Département de Santé Publique, Centre de Pharmacoépidémiologie (Cephepi), Unité de Recherche Clinique PSL-CFX, CIC-1901, Paris, France
| | - Jean-Damien Ricard
- Assistance Publique-Hôpitaux de Paris, Hôpital Louis Mourier, DMU ESPRIT, Service de Médecine Intensive Réanimation, Colombes, France
- Université Paris Cité, UMR1137 IAME, INSERM, Paris, France
| | - Samir Jaber
- Department of Anesthesia and Intensive Care Unit, Regional University Hospital of Montpellier, St-Eloi Hospital, University of Montpellier, PhyMedExp, INSERM U1046, CNRS UMR 9214, Montpellier, France
| | - Elie Azoulay
- Service de Médecine Intensive et Réanimation, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris, and Université de Paris, Paris, France
| | - Muriel Fartoukh
- Assistance Publique-Hôpitaux de Paris, Sorbonne Université, Service de Médecine Intensive Réanimation, Hôpital Tenon, Paris, France
- Sorbonne Université, UFR Médecine, Paris, France
- Groupe de Recherche Clinique CARMAS, Université Paris Est Créteil, Créteil, France
| | - Sami Hraiech
- Assistance Publique-Hôpitaux de Marseille, Hôpital Nord, Médecine Intensive Réanimation, Marseille, France
- Centre d'Etudes et de Recherches sur les Services de Santé et Qualité de Vie EA 3279, Marseille, France
| | - Alain Mercat
- Service de Réanimation Médicale et Médecine Hyperbare, Centre Hospitalier Régional Universitaire, Angers, France; and
| | - Thomas Similowski
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France
- Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Universitaire Assistance Publique-Hôpitaux de Paris-Sorbonne Université, Site Pitié-Salpêtrière, Département R3S, Paris, France
| | - Alexandre Demoule
- Assistance Publique-Hôpitaux de Paris, 26930, Groupe Hospitalier Universitaire Assistance Publique-Hôpitaux de Paris-Sorbonne Université, Site Pitié-Salpêtrière, Service de Médecine Intensive et Réanimation (Département R3S), Paris, France
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France
- Sorbonne Université, GRC 30, Reanimation et Soins Intensifs du Patient en Insuffisance Respiratoire Aiguë, Assistance Publique-Hôpitaux de Paris, Hôpital de la Pitié Salpêtrière, Paris, France
| |
Collapse
|
6
|
Pérez J, Telias I. Airway Occlusion Pressure and Dyspnea during Mechanical Ventilation: Giving Words to the Pleas of the Respiratory Centers. Am J Respir Crit Care Med 2024; 210:139-141. [PMID: 38484187 PMCID: PMC11273315 DOI: 10.1164/rccm.202402-0384ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/16/2024] Open
Affiliation(s)
- Joaquin Pérez
- Department of Physical Therapy and Rehabilitation Anchorena San Martín Clinic Buenos Aires, Argentina
- Department of Anesthesia, Critical Care and Emergency Maggiore Policlinico Hospital Milan, Italy
- Department of Emergency Medicine Carlos G. Durand Hospital Buenos Aires, Argentina
| | - Irene Telias
- Division of Respirology and Critical Care Medicine University Health Network and Sinai Health System Toronto, Ontario, Canada
- Department of Medicine University of Toronto Toronto, Ontario, Canada
- Li Ka Shing Knowledge Institute St. Michael's Hospital-Unity Health Toronto Toronto, Ontario, Canada
| |
Collapse
|
7
|
Itagaki T, Akimoto Y, Takashima T, Oto J. Ultrasonographic Assessment of the Diaphragm. Diagnostics (Basel) 2024; 14:1481. [PMID: 39061618 PMCID: PMC11276413 DOI: 10.3390/diagnostics14141481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 07/05/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
Mechanical ventilation injures not only the lungs but also the diaphragm, resulting in dysfunction associated with poor outcomes. Diaphragm ultrasonography is a noninvasive, cost-effective, and reproducible diagnostic method used to monitor the condition and function of the diaphragm. With advances in ultrasound technology and the expansion of its clinical applications, diaphragm ultrasonography has become increasingly important as a tool to visualize and quantify diaphragmatic morphology and function across multiple medical specialties, including pulmonology, critical care, and rehabilitation medicine. This comprehensive review aims to provide an in-depth analysis of the role and limitations of ultrasonography in assessing the diaphragm, especially among critically ill patients. Furthermore, we discuss a recently published expert consensus and provide a perspective for the future.
Collapse
Affiliation(s)
- Taiga Itagaki
- Department of Emergency and Disaster Medicine, Tokushima University Hospital, 2-50-1 Kuramoto, Tokushima 770-8503, Japan
| | - Yusuke Akimoto
- Emergency Department, Tokushima Prefectural Miyoshi Hospital, 815-2 Ikedacho Shima, Miyoshi 778-0005, Japan;
| | - Takuya Takashima
- Department of Emergency and Critical Care Medicine, Tokushima University Graduate Hospital of Biomedical Sciences, 3-18-15 Kuramoto, Tokushima 770-8503, Japan; (T.T.); (J.O.)
| | - Jun Oto
- Department of Emergency and Critical Care Medicine, Tokushima University Graduate Hospital of Biomedical Sciences, 3-18-15 Kuramoto, Tokushima 770-8503, Japan; (T.T.); (J.O.)
| |
Collapse
|
8
|
de Vries HJ, Heunks L. Reply to Akoumianaki et al.: Studying Diaphragm Activity during Expiration in Mechanically Ventilated Patients: Expiratory Asynchrony Is Important. Am J Respir Crit Care Med 2024; 209:1411-1412. [PMID: 38457815 PMCID: PMC11146568 DOI: 10.1164/rccm.202402-0312le] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 03/06/2024] [Indexed: 03/10/2024] Open
Affiliation(s)
- Heder Jonathan de Vries
- Department of Critical Care Medicine, Amsterdam University Medical Center, Amsterdam, the Netherlands
- Amsterdam Cardiovascular Science Research Institute, Amsterdam, the Netherlands; and
| | - Leo Heunks
- Amsterdam Cardiovascular Science Research Institute, Amsterdam, the Netherlands; and
- Department of Intensive Care Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
| |
Collapse
|
9
|
Rodríguez-Leal CM, González-Corralejo C, Candel FJ, Salavert M. Candent issues in pneumonia. Reflections from the Fifth Annual Meeting of Spanish Experts 2023. REVISTA ESPANOLA DE QUIMIOTERAPIA : PUBLICACION OFICIAL DE LA SOCIEDAD ESPANOLA DE QUIMIOTERAPIA 2024; 37:221-251. [PMID: 38436606 PMCID: PMC11094633 DOI: 10.37201/req/018.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 02/28/2024] [Indexed: 03/05/2024]
Abstract
Pneumonia is a multifaceted illness with a wide range of clinical manifestations, degree of severity and multiple potential causing microorganisms. Despite the intensive research of recent decades, community-acquired pneumonia remains the third-highest cause of mortality in developed countries and the first due to infections; and hospital-acquired pneumonia is the main cause of death from nosocomial infection in critically ill patients. Guidelines for management of this disease are available world wide, but there are questions which generate controversy, and the latest advances make it difficult to stay them up to date. A multidisciplinary approach can overcome these limitations and can also aid to improve clinical results. Spanish medical societies involved in diagnosis and treatment of pneumonia have made a collaborative effort to actualize and integrate last expertise about this infection. The aim of this paper is to reflect this knowledge, communicated in Fifth Pneumonia Day in Spain. It reviews the most important questions about this disorder, such as microbiological diagnosis, advances in antibiotic and sequential therapy, management of beta-lactam allergic patient, preventive measures, management of unusual or multi-resistant microorganisms and adjuvant or advanced therapies in Intensive Care Unit.
Collapse
Affiliation(s)
| | | | - F J Candel
- Francisco Javier Candel, Clinical Microbiology Service. Hospital Clínico San Carlos. IdISSC and IML Health Research Institutes. 28040 Madrid. Spain.
| | | |
Collapse
|
10
|
Bello G, Giammatteo V, Bisanti A, Delle Cese L, Rosà T, Menga LS, Montini L, Michi T, Spinazzola G, De Pascale G, Pennisi MA, Ribeiro De Santis Santiago R, Berra L, Antonelli M, Grieco DL. High vs Low PEEP in Patients With ARDS Exhibiting Intense Inspiratory Effort During Assisted Ventilation: A Randomized Crossover Trial. Chest 2024; 165:1392-1405. [PMID: 38295949 DOI: 10.1016/j.chest.2024.01.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 01/21/2024] [Accepted: 01/23/2024] [Indexed: 02/26/2024] Open
Abstract
BACKGROUND Positive end-expiratory pressure (PEEP) can potentially modulate inspiratory effort (ΔPes), which is the major determinant of self-inflicted lung injury. RESEARCH QUESTION Does high PEEP reduce ΔPes in patients with moderate-to-severe ARDS on assisted ventilation? STUDY DESIGN AND METHODS Sixteen patients with Pao2/Fio2 ≤ 200 mm Hg and ΔPes ≥ 10 cm H2O underwent a randomized sequence of four ventilator settings: PEEP = 5 cm H2O or PEEP = 15 cm H2O + synchronous (pressure support ventilation [PSV]) or asynchronous (pressure-controlled intermittent mandatory ventilation [PC-IMV]) inspiratory assistance. ΔPes and respiratory system, lung, and chest wall mechanics were assessed with esophageal manometry and occlusions. PEEP-induced alveolar recruitment and overinflation, lung dynamic strain, and tidal volume distribution were assessed with electrical impedance tomography. RESULTS ΔPes was not systematically different at high vs low PEEP (pressure support ventilation: median, 20 cm H2O; interquartile range (IQR), 15-24 cm H2O vs median, 15 cm H2O; IQR, 13-23 cm H2O; P = .24; pressure-controlled intermittent mandatory ventilation: median, 20; IQR, 18-23 vs median, 19; IQR, 17-25; P = .67, respectively). Similarly, respiratory system and transpulmonary driving pressures, tidal volume, lung/chest wall mechanics, and pendelluft extent were not different between study phases. High PEEP resulted in lower or higher ΔPes, respiratory system driving pressure, and transpulmonary driving pressure according to whether this increased or decreased respiratory system compliance (r = -0.85, P < .001; r = -0.75, P < .001; r = -0.80, P < .001, respectively). PEEP-induced changes in respiratory system compliance were driven by its lung component and were dependent on the extent of PEEP-induced alveolar overinflation (r = -0.66, P = .006). High PEEP caused variable recruitment and systematic redistribution of tidal volume toward dorsal lung regions, thereby reducing dynamic strain in ventral areas (pressure support ventilation: median, 0.49; IQR, 0.37-0.83 vs median, 0.96; IQR, 0.62-1.56; P = .003; pressure-controlled intermittent mandatory ventilation: median, 0.65; IQR, 0.42-1.31 vs median, 1.14; IQR, 0.79-1.52; P = .002). All results were consistent during synchronous and asynchronous inspiratory assistance. INTERPRETATION The impact of high PEEP on ΔPes and lung stress is interindividually variable according to different effects on the respiratory system and lung compliance resulting from alveolar overinflation. High PEEP may help mitigate the risk of self-inflicted lung injury solely if it increases lung/respiratory system compliance. TRIAL REGISTRATION ClinicalTrials.gov; No.: NCT04241874; URL: www. CLINICALTRIALS gov.
Collapse
Affiliation(s)
- Giuseppe Bello
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - Valentina Giammatteo
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy; Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Harvard University, Boston, MA
| | - Alessandra Bisanti
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - Luca Delle Cese
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - Tommaso Rosà
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - Luca S Menga
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - Luca Montini
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - Teresa Michi
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - Giorgia Spinazzola
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - Gennaro De Pascale
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - Mariano Alberto Pennisi
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - Roberta Ribeiro De Santis Santiago
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Harvard University, Boston, MA
| | - Lorenzo Berra
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Harvard University, Boston, MA
| | - Massimo Antonelli
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - Domenico Luca Grieco
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS; Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy.
| |
Collapse
|
11
|
Al-Sofyani KA. Predictors and outcomes of extubation failures in a pediatric intensive care unit: A retrospective study. J Taibah Univ Med Sci 2024; 19:516-523. [PMID: 39026556 PMCID: PMC11255959 DOI: 10.1016/j.jtumed.2024.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 01/22/2024] [Accepted: 03/12/2024] [Indexed: 07/20/2024] Open
Abstract
Objectives This study was aimed at determining the extubation failure (EF) rate in a pediatric intensive care unit (PICU), and assessing the etiology, associated risk factors, and outcomes. Methods We conducted a retrospective study on 335 pediatric patients admitted to King Abdulaziz University Hospital between 2018 and 2020, ranging in age from 1 month to 14 years, who required invasive mechanical ventilation (MV) for >24 h. Extubation readiness was determined by the attending pediatric intensive care physician, according to the patients' clinical status and extubation readiness criteria. Results In the cohort of 335 patients, 42 experienced issues during extubation (failure rate, 12.5%). Cardiovascular disease (42.9%) was the main primary admission condition in patients with EF. Younger age (median, interquartile range [IQR]: 4, 1.38-36 months) was strongly associated with EF compared with successful extubation (median, IQR: 12, 2-48; p = 0.036), and with a high predicted mortality rate (10.9%; p < 0.001) and Pediatric Risk of Mortality III (PRISM) score (13; p < 0.001). Furthermore, prolonged ICU stay (25.5 days; p < 0.001) and longer MV requirements (4 days; p < 0.001) before extubation in patients with EF were associated with a high mortality rate (∼12%; p < 0.001). Interestingly, dexamethasone administration before extubation significantly alleviated EF risk (28.3%; p < 0.001). Conclusion A higher EF rate in younger patients may potentially be associated with longer ICU stays, prolonged MV requirements before extubation, and the primary diagnostic condition. Dexamethasone effectively alleviated EF incidence. Further research with a rigorous evidence-based study design is necessary to substantiate the factors identified as predictors of EF and to develop strategies to avoid EF.
Collapse
Affiliation(s)
- Khouloud A. Al-Sofyani
- Department of Pediatric, Pediatric Critical Care Unit, Faculty of Medicine, King Abdulaziz University, Jeddah, KSA
| |
Collapse
|
12
|
Goligher EC, Damiani LF, Patel B. Implementing diaphragm protection during invasive mechanical ventilation. Intensive Care Med 2024:10.1007/s00134-024-07472-x. [PMID: 38801520 DOI: 10.1007/s00134-024-07472-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 05/02/2024] [Indexed: 05/29/2024]
Affiliation(s)
- Ewan C Goligher
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada.
- Department of Physiology, University of Toronto, Toronto, Canada.
- Division of Respirology, Department of Medicine, University Health Network, Toronto, Canada.
- Toronto General Hospital Research Institute, 585 University Ave., Toronto, ON, M5G 2N2, Canada.
| | - L Felipe Damiani
- Department of Health Science, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Bhakti Patel
- Section of Pulmonary and Critical Care, Department of Medicine, University of Chicago, Chicago, IL, USA
| |
Collapse
|
13
|
Protti A, Tonelli R, Dalla Corte F, Grieco DL, Spinelli E, Spadaro S, Piovani D, Menga LS, Schifino G, Vega Pittao ML, Umbrello M, Cammarota G, Volta CA, Bonovas S, Cecconi M, Mauri T, Clini E. Development of clinical tools to estimate the breathing effort during high-flow oxygen therapy: A multicenter cohort study. Pulmonology 2024:S2531-0437(24)00054-0. [PMID: 38760225 DOI: 10.1016/j.pulmoe.2024.04.008] [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: 03/05/2024] [Revised: 04/11/2024] [Accepted: 04/22/2024] [Indexed: 05/19/2024] Open
Abstract
INTRODUCTION AND OBJECTIVES Quantifying breathing effort in non-intubated patients is important but difficult. We aimed to develop two models to estimate it in patients treated with high-flow oxygen therapy. PATIENTS AND METHODS We analyzed the data of 260 patients from previous studies who received high-flow oxygen therapy. Their breathing effort was measured as the maximal deflection of esophageal pressure (ΔPes). We developed a multivariable linear regression model to estimate ΔPes (in cmH2O) and a multivariable logistic regression model to predict the risk of ΔPes being >10 cmH2O. Candidate predictors included age, sex, diagnosis of the coronavirus disease 2019 (COVID-19), respiratory rate, heart rate, mean arterial pressure, the results of arterial blood gas analysis, including base excess concentration (BEa) and the ratio of arterial tension to the inspiratory fraction of oxygen (PaO2:FiO2), and the product term between COVID-19 and PaO2:FiO2. RESULTS We found that ΔPes can be estimated from the presence or absence of COVID-19, BEa, respiratory rate, PaO2:FiO2, and the product term between COVID-19 and PaO2:FiO2. The adjusted R2 was 0.39. The risk of ΔPes being >10 cmH2O can be predicted from BEa, respiratory rate, and PaO2:FiO2. The area under the receiver operating characteristic curve was 0.79 (0.73-0.85). We called these two models BREF, where BREF stands for BReathing EFfort and the three common predictors: BEa (B), respiratory rate (RE), and PaO2:FiO2 (F). CONCLUSIONS We developed two models to estimate the breathing effort of patients on high-flow oxygen therapy. Our initial findings are promising and suggest that these models merit further evaluation.
Collapse
Affiliation(s)
- A Protti
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy; Department of Anesthesia and Intensive Care Units, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy.
| | - R Tonelli
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena-Reggio Emilia, Modena, Italy; Laboratory of Cell Therapies and Respiratory Medicine, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena-Reggio Emilia, Modena, Italy
| | - F Dalla Corte
- Department of Anesthesia and Intensive Care Units, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - D L Grieco
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - E Spinelli
- Department of Anesthesia, Intensive Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - S Spadaro
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
| | - D Piovani
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy; IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - L S Menga
- Department of Emergency, Intensive Care Medicine and Anesthesia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Istituto di Anestesiologia e Rianimazione, Università Cattolica del Sacro Cuore Rome, Italy
| | - G Schifino
- Respiratory and Critical Care Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, Bologna, Italy; Alma Mater Studiorum, Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - M L Vega Pittao
- Respiratory and Critical Care Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, Bologna, Italy; Alma Mater Studiorum, Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - M Umbrello
- SC Rianimazioine e Anestesia, ASST Ovest Milanese, Ospedale Civile di Legnano, Legnano, Milan, Italy
| | - G Cammarota
- Department of Traslational Medicine, Università degli Studi del Piemonte Orientale, Novara, Italy
| | - C A Volta
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
| | - S Bonovas
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy; IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - M Cecconi
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy; Department of Anesthesia and Intensive Care Units, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - T Mauri
- Department of Anesthesia, Intensive Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - E Clini
- Respiratory Diseases Unit, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena-Reggio Emilia, Modena, Italy; Laboratory of Cell Therapies and Respiratory Medicine, Department of Medical and Surgical Sciences, University Hospital of Modena, University of Modena-Reggio Emilia, Modena, Italy
| |
Collapse
|
14
|
Chiumello D, Fioccola A. Recent advances in cardiorespiratory monitoring in acute respiratory distress syndrome patients. J Intensive Care 2024; 12:17. [PMID: 38706001 PMCID: PMC11070081 DOI: 10.1186/s40560-024-00727-1] [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: 03/07/2024] [Accepted: 04/04/2024] [Indexed: 05/07/2024] Open
Abstract
BACKGROUND Recent advances on cardiorespiratory monitoring applied in ARDS patients undergoing invasive mechanical ventilation and noninvasive ventilatory support are available in the literature and may have potential prognostic implication in ARDS treatment. MAIN BODY The measurement of oxygen saturation by pulse oximetry is a valid, low-cost, noninvasive alternative for assessing arterial oxygenation. Caution must be taken in patients with darker skin pigmentation, who may experience a greater incidence of occult hypoxemia. Dead space surrogates, which are easy to calculate, have important prognostic implications. The mechanical power, which can be automatically computed by intensive care ventilators, is an important parameter correlated with ventilator-induced lung injury and outcome. In patients undergoing noninvasive ventilatory support, the use of esophageal pressure can measure inspiratory effort, avoiding possible delays in endotracheal intubation. Fluid responsiveness can also be evaluated using dynamic indices in patients ventilated at low tidal volumes (< 8 mL/kg). In patients ventilated at high levels of positive end expiratory pressure (PEEP), the PEEP test represents a valid alternative to passive leg raising. There is growing evidence on alternative parameters for evaluating fluid responsiveness, such as central venous oxygen saturation variations, inferior vena cava diameter variations and capillary refill time. CONCLUSION Careful cardiorespiratory monitoring in patients affected by ARDS is crucial to improve prognosis and to tailor treatment via mechanical ventilatory support.
Collapse
Affiliation(s)
- Davide Chiumello
- Department of Health Sciences, University of Milan, Milan, Italy.
- Department of Anesthesia and Intensive Care, ASST Santi Paolo e Carlo, San Paolo University Hospital Milan, Via Di Rudinì 9, Milan, Italy.
- Coordinated Research Center on Respiratory Failure, University of Milan, Milan, Italy.
| | - Antonio Fioccola
- Department of Health Sciences, University of Milan, Milan, Italy
- Department of Health Sciences, University of Florence, Florence, Italy
| |
Collapse
|
15
|
Deininger MM, Ziles D, Borleis A, Seemann T, Erlenkoetter F, Bleilevens C, Lohse A, Benner CF, Leonhardt S, Walter M, Breuer T. Breath-by-breath comparison of a novel percutaneous phrenic nerve stimulation approach with mechanical ventilation in juvenile pigs: a pilot study. Sci Rep 2024; 14:10252. [PMID: 38704459 PMCID: PMC11069575 DOI: 10.1038/s41598-024-61103-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 05/02/2024] [Indexed: 05/06/2024] Open
Abstract
About one in three critically ill patients requires mechanical ventilation (MV). Prolonged MV, however, results in diaphragmatic weakness, which itself is associated with delayed weaning and increased mortality. Inducing active diaphragmatic contraction via electrical phrenic nerve stimulation (PNS) not only provides the potential to reduce diaphragmatic muscular atrophy but also generates physiological-like ventilation and therefore offers a promising alternative to MV. Reasons why PNS is not yet used in critical care medicine are high procedural invasiveness, insufficient evidence, and lack of side-by-side comparison to MV. This study aims to establish a minimal-invasive percutaneous, bilateral electrode placement approach for sole PNS breathing and thereby enable, for the first time, a breath-by-breath comparison to MV. Six juvenile German Landrace pigs received general anesthesia and orotracheal intubation. Following the novel ultrasound-guided, landmark-based, 4-step approach, two echogenic needles per phrenic nerve were successfully placed. Stimulation effectiveness was evaluated measuring tidal volume, diaphragmatic thickening and tomographic electrical impedance in a breath-by-breath comparison to MV. Following sufficient bilateral phrenic nerve stimulation in all pigs, PNS breaths showed a 2.2-fold increase in diaphragmatic thickening. It induced tidal volumes in the lung-protective range by negative pressure inspiration and improved dorso-caudal regional ventilation in contrast to MV. Our study demonstrated the feasibility of a novel ultrasound-guided, percutaneous phrenic nerve stimulation approach, which generated sufficient tidal volumes and showed more resemblance to physiological breathing than MV in a breath-by-breath comparison.
Collapse
Affiliation(s)
- Matthias Manfred Deininger
- Department of Intensive and Intermediate Care, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany.
| | - Dmitrij Ziles
- Department of Intensive and Intermediate Care, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Annegret Borleis
- Department of Intensive and Intermediate Care, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Teresa Seemann
- Department of Intensive and Intermediate Care, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Fabian Erlenkoetter
- Department of Intensive and Intermediate Care, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Christian Bleilevens
- Department of Anesthesiology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Arnhold Lohse
- Chair for Medical Information Technology, Faculty of Electrical Engineering and Information Technology, RWTH Aachen University, Aachen, Germany
| | - Carl-Friedrich Benner
- Chair for Medical Information Technology, Faculty of Electrical Engineering and Information Technology, RWTH Aachen University, Aachen, Germany
| | - Steffen Leonhardt
- Chair for Medical Information Technology, Faculty of Electrical Engineering and Information Technology, RWTH Aachen University, Aachen, Germany
| | - Marian Walter
- Chair for Medical Information Technology, Faculty of Electrical Engineering and Information Technology, RWTH Aachen University, Aachen, Germany
| | - Thomas Breuer
- Department of Intensive and Intermediate Care, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| |
Collapse
|
16
|
Simonte R, Cammarota G, Vetrugno L, De Robertis E, Longhini F, Spadaro S. Advanced Respiratory Monitoring during Extracorporeal Membrane Oxygenation. J Clin Med 2024; 13:2541. [PMID: 38731069 PMCID: PMC11084162 DOI: 10.3390/jcm13092541] [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: 03/17/2024] [Revised: 04/16/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Advanced respiratory monitoring encompasses a diverse range of mini- or noninvasive tools used to evaluate various aspects of respiratory function in patients experiencing acute respiratory failure, including those requiring extracorporeal membrane oxygenation (ECMO) support. Among these techniques, key modalities include esophageal pressure measurement (including derived pressures), lung and respiratory muscle ultrasounds, electrical impedance tomography, the monitoring of diaphragm electrical activity, and assessment of flow index. These tools play a critical role in assessing essential parameters such as lung recruitment and overdistention, lung aeration and morphology, ventilation/perfusion distribution, inspiratory effort, respiratory drive, respiratory muscle contraction, and patient-ventilator synchrony. In contrast to conventional methods, advanced respiratory monitoring offers a deeper understanding of pathological changes in lung aeration caused by underlying diseases. Moreover, it allows for meticulous tracking of responses to therapeutic interventions, aiding in the development of personalized respiratory support strategies aimed at preserving lung function and respiratory muscle integrity. The integration of advanced respiratory monitoring represents a significant advancement in the clinical management of acute respiratory failure. It serves as a cornerstone in scenarios where treatment strategies rely on tailored approaches, empowering clinicians to make informed decisions about intervention selection and adjustment. By enabling real-time assessment and modification of respiratory support, advanced monitoring not only optimizes care for patients with acute respiratory distress syndrome but also contributes to improved outcomes and enhanced patient safety.
Collapse
Affiliation(s)
- Rachele Simonte
- Department of Medicine and Surgery, Università degli Studi di Perugia, 06100 Perugia, Italy; (R.S.); (E.D.R.)
| | - Gianmaria Cammarota
- Department of Translational Medicine, Università del Piemonte Orientale, 28100 Novara, Italy;
| | - Luigi Vetrugno
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, 66100 Chieti, Italy;
| | - Edoardo De Robertis
- Department of Medicine and Surgery, Università degli Studi di Perugia, 06100 Perugia, Italy; (R.S.); (E.D.R.)
| | - Federico Longhini
- Department of Medical and Surgical Sciences, Università della Magna Graecia, 88100 Catanzaro, Italy
- Anesthesia and Intensive Care Unit, “R. Dulbecco” University Hospital, 88100 Catanzaro, Italy
| | - Savino Spadaro
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, 44100 Ferrara, Italy;
| |
Collapse
|
17
|
Baedorf-Kassis E, Murn M, Dzierba AL, Serra AL, Garcia I, Minus E, Padilla C, Sarge T, Goodspeed VM, Matthay MA, Gong MN, Cook D, Loring SH, Talmor D, Beitler JR. Respiratory drive heterogeneity associated with systemic inflammation and vascular permeability in acute respiratory distress syndrome. Crit Care 2024; 28:136. [PMID: 38654391 PMCID: PMC11036740 DOI: 10.1186/s13054-024-04920-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 04/17/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND In acute respiratory distress syndrome (ARDS), respiratory drive often differs among patients with similar clinical characteristics. Readily observable factors like acid-base state, oxygenation, mechanics, and sedation depth do not fully explain drive heterogeneity. This study evaluated the relationship of systemic inflammation and vascular permeability markers with respiratory drive and clinical outcomes in ARDS. METHODS ARDS patients enrolled in the multicenter EPVent-2 trial with requisite data and plasma biomarkers were included. Neuromuscular blockade recipients were excluded. Respiratory drive was measured as PES0.1, the change in esophageal pressure during the first 0.1 s of inspiratory effort. Plasma angiopoietin-2, interleukin-6, and interleukin-8 were measured concomitantly, and 60-day clinical outcomes evaluated. RESULTS 54.8% of 124 included patients had detectable respiratory drive (PES0.1 range of 0-5.1 cm H2O). Angiopoietin-2 and interleukin-8, but not interleukin-6, were associated with respiratory drive independently of acid-base, oxygenation, respiratory mechanics, and sedation depth. Sedation depth was not significantly associated with PES0.1 in an unadjusted model, or after adjusting for mechanics and chemoreceptor input. However, upon adding angiopoietin-2, interleukin-6, or interleukin-8 to models, lighter sedation was significantly associated with higher PES0.1. Risk of death was less with moderate drive (PES0.1 of 0.5-2.9 cm H2O) compared to either lower drive (hazard ratio 1.58, 95% CI 0.82-3.05) or higher drive (2.63, 95% CI 1.21-5.70) (p = 0.049). CONCLUSIONS Among patients with ARDS, systemic inflammatory and vascular permeability markers were independently associated with higher respiratory drive. The heterogeneous response of respiratory drive to varying sedation depth may be explained in part by differences in inflammation and vascular permeability.
Collapse
Affiliation(s)
- Elias Baedorf-Kassis
- Division of Pulmonary and Critical Care Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Michael Murn
- Columbia Respiratory Critical Care Trials Group, Columbia University College of Physicians and Surgeons, and New York-Presbyterian Hospital, 622 West 168th Street, New York, NY, 10032, USA
- Center for Acute Respiratory Failure, New York-Presbyterian Hospital, New York, NY, USA
| | - Amy L Dzierba
- Columbia Respiratory Critical Care Trials Group, Columbia University College of Physicians and Surgeons, and New York-Presbyterian Hospital, 622 West 168th Street, New York, NY, 10032, USA
- Center for Acute Respiratory Failure, New York-Presbyterian Hospital, New York, NY, USA
- Department of Pharmacy, New York-Presbyterian Hospital, New York, NY, USA
| | - Alexis L Serra
- Columbia Respiratory Critical Care Trials Group, Columbia University College of Physicians and Surgeons, and New York-Presbyterian Hospital, 622 West 168th Street, New York, NY, 10032, USA
- Center for Acute Respiratory Failure, New York-Presbyterian Hospital, New York, NY, USA
| | - Ivan Garcia
- Columbia Respiratory Critical Care Trials Group, Columbia University College of Physicians and Surgeons, and New York-Presbyterian Hospital, 622 West 168th Street, New York, NY, 10032, USA
- Center for Acute Respiratory Failure, New York-Presbyterian Hospital, New York, NY, USA
| | - Emily Minus
- Departments of Medicine and Anesthesia, University of California San Francisco, San Francisco, CA, USA
| | - Clarissa Padilla
- Columbia Respiratory Critical Care Trials Group, Columbia University College of Physicians and Surgeons, and New York-Presbyterian Hospital, 622 West 168th Street, New York, NY, 10032, USA
- Center for Acute Respiratory Failure, New York-Presbyterian Hospital, New York, NY, USA
| | - Todd Sarge
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Valerie M Goodspeed
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Michael A Matthay
- Departments of Medicine and Anesthesia, University of California San Francisco, San Francisco, CA, USA
| | - Michelle N Gong
- Department of Critical Care Medicine, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY, USA
| | - Deborah Cook
- St. Joseph's Hospital and McMaster University, Hamilton, ON, Canada
| | - Stephen H Loring
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Daniel Talmor
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Jeremy R Beitler
- Columbia Respiratory Critical Care Trials Group, Columbia University College of Physicians and Surgeons, and New York-Presbyterian Hospital, 622 West 168th Street, New York, NY, 10032, USA.
- Center for Acute Respiratory Failure, New York-Presbyterian Hospital, New York, NY, USA.
| |
Collapse
|
18
|
Georgopoulos D, Bolaki M, Stamatopoulou V, Akoumianaki E. Respiratory drive: a journey from health to disease. J Intensive Care 2024; 12:15. [PMID: 38650047 DOI: 10.1186/s40560-024-00731-5] [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: 03/22/2024] [Accepted: 04/12/2024] [Indexed: 04/25/2024] Open
Abstract
Respiratory drive is defined as the intensity of respiratory centers output during the breath and is primarily affected by cortical and chemical feedback mechanisms. During the involuntary act of breathing, chemical feedback, primarily mediated through CO2, is the main determinant of respiratory drive. Respiratory drive travels through neural pathways to respiratory muscles, which execute the breathing process and generate inspiratory flow (inspiratory flow-generation pathway). In a healthy state, inspiratory flow-generation pathway is intact, and thus respiratory drive is satisfied by the rate of volume increase, expressed by mean inspiratory flow, which in turn determines tidal volume. In this review, we will explain the pathophysiology of altered respiratory drive by analyzing the respiratory centers response to arterial partial pressure of CO2 (PaCO2) changes. Both high and low respiratory drive have been associated with several adverse effects in critically ill patients. Hence, it is crucial to understand what alters the respiratory drive. Changes in respiratory drive can be explained by simultaneously considering the (1) ventilatory demands, as dictated by respiratory centers activity to CO2 (brain curve); (2) actual ventilatory response to CO2 (ventilation curve); and (3) metabolic hyperbola. During critical illness, multiple mechanisms affect the brain and ventilation curves, as well as metabolic hyperbola, leading to considerable alterations in respiratory drive. In critically ill patients the inspiratory flow-generation pathway is invariably compromised at various levels. Consequently, mean inspiratory flow and tidal volume do not correspond to respiratory drive, and at a given PaCO2, the actual ventilation is less than ventilatory demands, creating a dissociation between brain and ventilation curves. Since the metabolic hyperbola is one of the two variables that determine PaCO2 (the other being the ventilation curve), its upward or downward movements increase or decrease respiratory drive, respectively. Mechanical ventilation indirectly influences respiratory drive by modifying PaCO2 levels through alterations in various parameters of the ventilation curve and metabolic hyperbola. Understanding the diverse factors that modulate respiratory drive at the bedside could enhance clinical assessment and the management of both the patient and the ventilator.
Collapse
Affiliation(s)
| | - Maria Bolaki
- Department of Intensive Care Medicine, University Hospital of Heraklion, Heraklion, Crete, Greece
| | - Vaia Stamatopoulou
- Department of Pulmonary Medicine, University Hospital of Heraklion, Heraklion , Crete, Greece
| | - Evangelia Akoumianaki
- Medical School, University of Crete, Heraklion, Crete, Greece
- Department of Intensive Care Medicine, University Hospital of Heraklion, Heraklion, Crete, Greece
| |
Collapse
|
19
|
Michels-Zetsche JD, Schubert-Haack J, Tanck K, Neetz B, Iberl G, Müller M, Kempa A, Joves B, Rheinhold A, Ghiani A, Tsitouras K, Schneider A, Rauch C, Gehrig P, Biehler E, Fleischauer T, Britsch S, Frerk T, Szecsenyi J, Herth FJF, Trudzinski FC. E-learning-an interventional element of the PRiVENT project to improve weaning expertise. BMC MEDICAL EDUCATION 2024; 24:420. [PMID: 38641835 PMCID: PMC11027525 DOI: 10.1186/s12909-024-05416-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 04/11/2024] [Indexed: 04/21/2024]
Abstract
BACKGROUND PRiVENT (PRevention of invasive VENTilation) is an evaluation of a bundle of interventions aimed at the prevention of long-term invasive mechanical ventilation. One of these elements is an e-learning course for healthcare professionals to improve weaning expertise. The aim of our analysis is to examine the implementation of the course in cooperating intensive care units. METHODS The course has been developed through a peer review process by pulmonary and critical care physicians in collaboration with respiratory therapists, supported by health services researchers and a professional e-learning agency. The e-learning platform "weLearn" was made available online to participating healthcare professionals. Feedback on the e-learning programme was obtained and discussed in quality circles (QCs). We measured the acceptance and use of the programme through access statistics. RESULTS The e-learning course "Joint Prevention of Long-Term Ventilation" consists of 7 separate modules with practice-oriented training units as well as a cross-module area and corresponding interactive case studies. Users can receive 23 CME (continuing medical education) credits. The platform was released on July 1, 2021. By June 28, 2023, 214 users from 33 clinics had registered. Most users (77-98%) completed the modules, thus performing well in the test, where 90-100% passed. In the QCs, the users commended the structure and practical relevance of the programme, as well as the opportunity to earn CME credits. CONCLUSION Especially for medical staff in intensive care units, where continuous training is often a challenge during shift work, e-learning is a useful supplement to existing medical training. TRIAL REGISTRATION The PRiVENT study is registered at ClinicalTrials.gov (NCT05260853) on 02/03/2022.
Collapse
Affiliation(s)
- Julia D Michels-Zetsche
- Department of Pneumology and Critical Care, Thoraxklinik, University Hosptial Heidelberg, Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany.
| | - Janina Schubert-Haack
- aQua Institute for Applied Quality Improvement and Research in Health Care, Göttingen, Germany
| | - Katrin Tanck
- Common Sense eLearning & Training Consultants GmbH, Vienna, Austria
| | - Benjamin Neetz
- Department of Pneumology and Critical Care, Thoraxklinik, University Hosptial Heidelberg, Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - Gabriele Iberl
- Department of Pneumology and Critical Care, Thoraxklinik, University Hosptial Heidelberg, Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - Michael Müller
- Department of Pneumology and Critical Care, Thoraxklinik, University Hosptial Heidelberg, Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - Axel Kempa
- Department of Pneumology and Critical Care Medicine, SLK Loewenstein Lung Center, Loewenstein, Germany
| | - Biljana Joves
- Department of Pneumology and Critical Care Medicine, SLK Loewenstein Lung Center, Loewenstein, Germany
| | - Andreas Rheinhold
- Department of Pneumology and Critical Care Medicine, SLK Loewenstein Lung Center, Loewenstein, Germany
| | - Alessandro Ghiani
- Department of Pneumology and Respiratory Medicine, Robert-Bosch-Krankenhaus Klinik Schillerhöhe, Gerlingen, Germany
| | - Konstantinos Tsitouras
- Department of Pneumology and Respiratory Medicine, Robert-Bosch-Krankenhaus Klinik Schillerhöhe, Gerlingen, Germany
| | - Armin Schneider
- Department of Anaesthesia and Intensive Care Medicine Waldburg-Zeil Kliniken, Wangen im Allgäu, Germany
| | - Christoph Rauch
- Department of Pneumology, Critical Care and Allergology, Lung Centre South-West, Wangen im Allgäu, Germany
| | - Patrick Gehrig
- Department of Pneumology, Critical Care and Allergology, Lung Centre South-West, Wangen im Allgäu, Germany
| | - Elena Biehler
- Department of General Practice and Health Services Research, University Hospital Heidelberg, Heidelberg, Germany
| | - Thomas Fleischauer
- Department of General Practice and Health Services Research, University Hospital Heidelberg, Heidelberg, Germany
| | - Simone Britsch
- Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Center Mannheim, Mannheim, Germany
- European Center for Angioscience (ECAS) and German Center for Cardiovascular Research (DZHK), Partner Site Heidelberg/Mannheim, Mannheim, Germany
| | - Timm Frerk
- aQua Institute for Applied Quality Improvement and Research in Health Care, Göttingen, Germany
| | - Joachim Szecsenyi
- aQua Institute for Applied Quality Improvement and Research in Health Care, Göttingen, Germany
| | - Felix J F Herth
- Department of Pneumology and Critical Care, Thoraxklinik, University Hosptial Heidelberg, Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| | - Franziska C Trudzinski
- Department of Pneumology and Critical Care, Thoraxklinik, University Hosptial Heidelberg, Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Heidelberg, Germany
| |
Collapse
|
20
|
Cruces P, Erranz B, Pérez A, Reveco S, González C, Retamal J, Poblete D, Hurtado DE, Díaz F. Noninvasive Continuous Positive Airway Pressure Is a Lung- and Diaphragm-protective Approach in Self-inflicted Lung Injury. Am J Respir Crit Care Med 2024; 209:1022-1025. [PMID: 38320093 DOI: 10.1164/rccm.202309-1629le] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 02/06/2024] [Indexed: 02/08/2024] Open
Affiliation(s)
- Pablo Cruces
- Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
- Unidad de Paciente Crítico Pediátrico, Departamento de Pediatría, Hospital El Carmen Dr. Luis Valentín Ferrada, Santiago, Chile
| | - Benjamín Erranz
- Departamento de Ingeniería Estructural y Geotécnica, Escuela de Ingeniería
| | - Agustín Pérez
- Departamento de Ingeniería Estructural y Geotécnica, Escuela de Ingeniería
- Instituto de Ingeniería Biológica y Médica, Escuelas de Ingeniería, Medicina y Ciencias Biológicas, and
| | - Sonia Reveco
- Unidad de Paciente Crítico Pediátrico, Departamento de Pediatría, Hospital El Carmen Dr. Luis Valentín Ferrada, Santiago, Chile
| | - Carlos González
- Escuela de Medicina Veterinaria, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
| | - Jaime Retamal
- Plataforma Experimental Bio-CT, Facultad de Odontología, Universidad de Chile, Santiago, Chile; and
| | - Daniela Poblete
- Departamento de Medicina Intensiva, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Daniel E Hurtado
- Departamento de Ingeniería Estructural y Geotécnica, Escuela de Ingeniería
- Instituto de Ingeniería Biológica y Médica, Escuelas de Ingeniería, Medicina y Ciencias Biológicas, and
| | - Franco Díaz
- Unidad de Paciente Crítico Pediátrico, Departamento de Pediatría, Hospital El Carmen Dr. Luis Valentín Ferrada, Santiago, Chile
- Unidad de Investigación y Epidemiología Clínica, Escuela de Medicina, Universidad Finis Terrae, Santiago, Chile
| |
Collapse
|
21
|
Taylor J, Wilcox ME. Physical and Cognitive Impairment in Acute Respiratory Failure. Crit Care Clin 2024; 40:429-450. [PMID: 38432704 DOI: 10.1016/j.ccc.2024.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
Recent research has brought renewed attention to the multifaceted physical and cognitive dysfunction that accompanies acute respiratory failure (ARF). This state-of-the-art review provides an overview of the evidence landscape encompassing ARF-associated neuromuscular and neurocognitive impairments. Risk factors, mechanisms, assessment tools, rehabilitation strategies, approaches to ventilator liberation, and interventions to minimize post-intensive care syndrome are emphasized. The complex interrelationship between physical disability, cognitive dysfunction, and long-term patient-centered outcomes is explored. This review highlights the need for comprehensive, multidisciplinary approaches to mitigate morbidity and accelerate recovery.
Collapse
Affiliation(s)
- Jonathan Taylor
- Division of Pulmonary, Critical Care and Sleep Medicine, Mount Sinai Hospital, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1232, New York, NY 10029, USA
| | - Mary Elizabeth Wilcox
- Department of Critical Care Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada.
| |
Collapse
|
22
|
Le Stang V, Latronico N, Dres M, Bertoni M. Critical illness-associated limb and diaphragmatic weakness. Curr Opin Crit Care 2024; 30:121-130. [PMID: 38441088 PMCID: PMC10919276 DOI: 10.1097/mcc.0000000000001135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
PURPOSE OF REVIEW In the current review, we aim to highlight the evolving evidence on the diagnosis, prevention and treatment of critical illness weakness (CIW) and critical illness associated diaphragmatic weakness (CIDW). RECENT FINDINGS In the ICU, several risk factors can lead to CIW and CIDW. Recent evidence suggests that they have different pathophysiological mechanisms and impact on outcomes, although they share common risk factors and may overlap in several patients. Their diagnosis is challenging, because CIW diagnosis is primarily clinical and, therefore, difficult to obtain in the ICU population, and CIDW diagnosis is complex and not easily performed at the bedside. All of these issues lead to underdiagnosis of CIW and CIDW, which significantly increases the risk of complications and the impact on both short and long term outcomes. Moreover, recent studies have explored promising diagnostic techniques that are may be easily implemented in daily clinical practice. In addition, this review summarizes the latest research aimed at improving how to prevent and treat CIW and CIDW. SUMMARY This review aims to clarify some uncertain aspects and provide helpful information on developing monitoring techniques and therapeutic interventions for managing CIW and CIDW.
Collapse
Affiliation(s)
- Valentine Le Stang
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique
- AP-HP. Sorbonne Université, Hôpital Pitié-Salpêtrière, Service de Médecine Intensive –Réanimation (Département ‘R3S’), Paris, France
| | - Nicola Latronico
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia
- Department of Emergency, ASST Spedali Civili University Hospital, Piazzale Ospedali Civili, 1, 25123 Brescia, Italy
- ‘Alessandra BONO’ Interdepartmental University Research Center on LOng Term Outcome (LOTO) in Critical Illness Survivors, University of Brescia, Brescia, Italy
| | - Martin Dres
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique
- AP-HP. Sorbonne Université, Hôpital Pitié-Salpêtrière, Service de Médecine Intensive –Réanimation (Département ‘R3S’), Paris, France
| | - Michele Bertoni
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia
- Department of Emergency, ASST Spedali Civili University Hospital, Piazzale Ospedali Civili, 1, 25123 Brescia, Italy
| |
Collapse
|
23
|
van Minnen O, Jolink FE, van den Bergh WM, Droogh JM, Oude Lansink-Hartgring A. International Survey on Mechanical Ventilation During Extracorporeal Membrane Oxygenation. ASAIO J 2024; 70:300-304. [PMID: 38051596 PMCID: PMC10977054 DOI: 10.1097/mat.0000000000002101] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023] Open
Abstract
The optimal ventilation strategy for patients on extracorporeal membrane oxygenation (ECMO) remains uncertain. This survey reports current mechanical ventilation strategies adopted by ECMO centers worldwide. An international, multicenter, cross-sectional survey was conducted anonymously through an internet-based tool. Participants from North America, Europe, Asia, and Oceania were recruited from the extracorporeal life support organization (ELSO) directory. Responses were received from 48 adult ECMO centers (response rate 10.6%). Half of these had dedicated ventilation protocols for ECMO support. Pressure-controlled ventilation was the preferred initial ventilation mode for both venovenous ECMO (VV-ECMO) (60%) and venoarterial ECMO (VA-ECMO) (34%). In VV-ECMO, the primary goal was lung rest (93%), with rescue therapies commonly employed, especially neuromuscular blockade (93%) and prone positioning (74%). Spontaneous ventilation was typically introduced after signs of pulmonary recovery, with few centers using it as the initial mode (7%). A quarter of centers stopped sedation within 3 days after ECMO initiation. Ventilation strategies during VA-ECMO focused less on lung-protective goals and transitioned to spontaneous ventilation earlier. Ventilation strategies during ECMO support differ considerably. Controlled ventilation is predominantly used initially to provide lung rest, often facilitated by sedation and neuromuscular blockade. Few centers apply "awake ECMO" early during ECMO support, some utilizing partial neuromuscular blockade.
Collapse
Affiliation(s)
- Olivier van Minnen
- From the Department of Critical Care, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Floris E.J. Jolink
- From the Department of Critical Care, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Walter M. van den Bergh
- From the Department of Critical Care, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Joep M. Droogh
- From the Department of Critical Care, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | | |
Collapse
|
24
|
de Vries HJ, Jonkman AH, Holleboom MC, de Grooth HJ, Shi Z, Ottenheijm CA, de Man AM, Tuinman PR, Heunks L. Diaphragm Activity during Expiration in Ventilated Critically Ill Patients. Am J Respir Crit Care Med 2024; 209:881-883. [PMID: 38190708 DOI: 10.1164/rccm.202310-1845le] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/03/2024] [Indexed: 01/10/2024] Open
Affiliation(s)
- Heder J de Vries
- Department of Intensive Care, Amsterdam UMC Location VUmc, Amsterdam, the Netherlands
- Amsterdam Cardiovascular Sciences Research Institute, Amsterdam, the Netherlands
| | - Annemijn H Jonkman
- Department of Intensive Care, Amsterdam UMC Location VUmc, Amsterdam, the Netherlands
- Department of Intensive Care, Erasmus MC, Rotterdam, the Netherlands
| | - Minke C Holleboom
- Department of Intensive Care, Amsterdam UMC Location VUmc, Amsterdam, the Netherlands
| | - Harm J de Grooth
- Department of Intensive Care, Amsterdam UMC Location VUmc, Amsterdam, the Netherlands
| | - Zhonghua Shi
- Department of Intensive Care, Amsterdam UMC Location VUmc, Amsterdam, the Netherlands
- Department of Critical Care Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing, China; and
| | - Coen A Ottenheijm
- Amsterdam Cardiovascular Sciences Research Institute, Amsterdam, the Netherlands
| | - Angelique M de Man
- Department of Intensive Care, Amsterdam UMC Location VUmc, Amsterdam, the Netherlands
- Amsterdam Cardiovascular Sciences Research Institute, Amsterdam, the Netherlands
| | - Pieter R Tuinman
- Department of Intensive Care, Amsterdam UMC Location VUmc, Amsterdam, the Netherlands
- Amsterdam Cardiovascular Sciences Research Institute, Amsterdam, the Netherlands
| | - Leo Heunks
- Department of Intensive Care, Amsterdam UMC Location VUmc, Amsterdam, the Netherlands
- Amsterdam Cardiovascular Sciences Research Institute, Amsterdam, the Netherlands
- Department of Intensive Care, Erasmus MC, Rotterdam, the Netherlands
- Department of Intensive Care Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
| |
Collapse
|
25
|
Serra AL, Meyer NJ, Beitler JR. Treatment Mechanism and Inflammatory Subphenotyping in Acute Respiratory Distress Syndrome. Am J Respir Crit Care Med 2024; 209:774-776. [PMID: 38394653 PMCID: PMC10995565 DOI: 10.1164/rccm.202402-0340ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 02/22/2024] [Indexed: 02/25/2024] Open
Affiliation(s)
- Alexis L Serra
- Center for Acute Respiratory Failure Columbia University New York, New York
| | - Nuala J Meyer
- Division of Pulmonary, Allergy, and Critical Care Medicine University of Pennsylvania Philadelphia, Pennsylvania
| | - Jeremy R Beitler
- Center for Acute Respiratory Failure Columbia University New York, New York
| |
Collapse
|
26
|
Moury PH, Béhouche A, Bailly S, Durand Z, Dessertaine G, Pollet A, Jaber S, Verges S, Albaladejo P. Diaphragm thickness modifications and associated factors during VA-ECMO for a cardiogenic shock: a cohort study. Ann Intensive Care 2024; 14:38. [PMID: 38457010 PMCID: PMC10923772 DOI: 10.1186/s13613-024-01264-8] [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: 09/23/2023] [Accepted: 02/16/2024] [Indexed: 03/09/2024] Open
Abstract
BACKGROUND The incidence, causes and impact of diaphragm thickness evolution in veno-arterial extracorporeal membrane oxygenation (VA-ECMO) for cardiogenic shock are unknown. Our study investigates its evolution during the first week of VA-ECMO and its relationship with sweep gas flow settings. METHODS We conducted a prospective monocentric observational study in a 12-bed ICU in France, enrolling patients on the day of the VA-ECMO implantation. The diaphragm thickness and the diaphragm thickening fraction (as index of contractile activity, dTF; dTF < 20% defined a low contractile activity) were daily measured for one week using ultrasound. Factors associated with diaphragm thickness evolution (categorized as increased, stable, or atrophic based on > 10% modification from baseline to the last measurement), early extubation role (< day4), and patients outcome at 60 days were investigated. Changes in diaphragm thickness, the primary endpoint, was analysed using a mixed-effect linear model (MLM). RESULTS Of the 29 included patients, seven (23%) presented diaphragm atrophy, 18 remained stable (60%) and 4 exhibited an increase (17%). None of the 13 early-extubated patients experienced diaphragm atrophy, while 7 (46%) presented a decrease when extubated later (p-value = 0.008). Diaphragm thickness changes were not associated with the dTF (p-value = 0.13) but with sweep gas flow (Beta = - 3; Confidence Interval at 95% (CI) [- 4.8; - 1.2]. p-value = 0.001) and pH (Beta = - 2; CI [- 2.9; - 1]. p-value < 0.001) in MLM. The dTF remained low (< 20%) in 20 patients (69%) at the study's end and was associated with sweep gas flow evolution in MLM (Beta = - 2.8; 95% CI [- 5.2; - 0.5], p-value = 0.017). Odds ratio of death at 60 days in case of diaphragm atrophy by day 7 was 8.50 ([1.4-74], p = 0.029). CONCLUSION In our study, diaphragm thickness evolution was frequent and not associated with the diaphragm thickening fraction. Diaphragm was preserved from atrophy in case of early extubation with ongoing VA-ECMO assistance. Metabolic disorders resulting from organ failures and sweep gas flow were linked with diaphragm thickness evolution. Preserved diaphragm thickness in VA-ECMO survivors emphasizes the importance of diaphragm-protective strategies, including meticulous sweep gas flow titration.
Collapse
Affiliation(s)
- Pierre-Henri Moury
- Pôle Anesthésie-Réanimation, Grenoble Alpes University, Grenoble, France.
- Univ. Grenoble Alpes, Inserm, Grenoble Alpes University Hospital, HP2 Laboratory, Grenoble, France.
| | - Alexandre Béhouche
- Pôle Anesthésie-Réanimation, Grenoble Alpes University, Grenoble, France
| | - Sébastien Bailly
- Univ. Grenoble Alpes, Inserm, Grenoble Alpes University Hospital, HP2 Laboratory, Grenoble, France
| | - Zoé Durand
- Pôle Anesthésie-Réanimation, Grenoble Alpes University, Grenoble, France
| | | | - Angelina Pollet
- Pôle Anesthésie-Réanimation, Grenoble Alpes University, Grenoble, France
| | - Samir Jaber
- Intensive Care Unit, Anaesthesiology and Critical Care Department B, Saint Eloi Teaching Hospital, Université Montpellier 1, Centre Hospitalier Universitaire Montpellier, Montpellier, France
| | - Samuel Verges
- Univ. Grenoble Alpes, Inserm, Grenoble Alpes University Hospital, HP2 Laboratory, Grenoble, France
| | - Pierre Albaladejo
- Pôle Anesthésie-Réanimation, Grenoble Alpes University, Grenoble, France
| |
Collapse
|
27
|
McKinney RL, Wallström L, Courtney SE, Sindelar R. Novel forms of ventilation in neonates: Neurally adjusted ventilatory assist and proportional assist ventilation. Semin Perinatol 2024; 48:151889. [PMID: 38565434 DOI: 10.1016/j.semperi.2024.151889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Patient-triggered modes of ventilation are currently the standard of practice in the care of term and preterm infants. Maintaining spontaneous breathing during mechanical ventilation promotes earlier weaning and possibly reduces ventilator-induced diaphragmatic dysfunction. A further development of assisted ventilation provides support in proportion to the respiratory effort and enables the patient to have full control of their ventilatory cycle. In this paper we will review the literature on two of these modes of ventilation: neurally adjusted ventilatory assist (NAVA) and proportional assist ventilation (PAV), propose future studies and suggest clinical applications of these modes.
Collapse
Affiliation(s)
- R L McKinney
- Alpert Medical School of Brown University, 593 Eddy Street, Providence, RI 02906, United States.
| | - L Wallström
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - S E Courtney
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - R Sindelar
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| |
Collapse
|
28
|
Kneyber MCJ. Positive end-expiratory pressure in the pediatric intensive care unit. Paediatr Respir Rev 2024; 49:5-8. [PMID: 38030513 DOI: 10.1016/j.prrv.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 11/21/2023] [Indexed: 12/01/2023]
Abstract
Application of positive end-expiratory pressure (PEEP) targeted towards improving oxygenation is one of the components of the ventilatory management of pediatric acute respiratory distress syndrome (PARDS). Low end-expiratory airway pressures cause repetitive opening and closure of unstable alveoli, leading to surfactant dysfunction and parenchymal shear injury. Consequently, there is less lung volume available for tidal ventilation when there are atelectatic lung regions. This will increase lung strain in aerated lung areas to which the tidal volume is preferentially distributed. Pediatric critical care practitioners tend to use low levels of PEEP and inherently accept higher FiO2, but these practices may negatively affect patient outcome. The Pediatric Acute Lung Injury Consensus Conference (PALICC) suggests that PEEP should be titrated to oxygenation/oxygen delivery, hemodynamics, and compliance measured under static conditions as compared to other clinical parameters or any of these parameters in isolation in patients with PARDS, while limiting plateau pressure and/or driving pressure limits.
Collapse
Affiliation(s)
- Martin C J Kneyber
- Department of Paediatrics, Division of Paediatric Critical Care Medicine, Beatrix Children's Hospital, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands; Anaesthesiology, Peri-operative & Emergency Medicine, University of Groningen, Groningen, the Netherlands.
| |
Collapse
|
29
|
Wu H, Chasteen B. Rapid review of ventilator-induced diaphragm dysfunction. Respir Med 2024; 223:107541. [PMID: 38290603 DOI: 10.1016/j.rmed.2024.107541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 01/22/2024] [Accepted: 01/25/2024] [Indexed: 02/01/2024]
Abstract
Ventilator-induced diaphragm dysfunction is gaining increased recognition. Evidence of diaphragm weakness can manifest within 12 h to a few days after the initiation of mechanical ventilation. Various noninvasive and invasive methods have been developed to assess diaphragm function. The implementation of diaphragm-protective ventilation strategies is crucial for preventing diaphragm injuries. Furthermore, diaphragm neurostimulation emerges as a promising and novel treatment option. In this rapid review, our objective is to discuss the current understanding of ventilator-induced diaphragm dysfunction, diagnostic approaches, and updates on strategies for prevention and management.
Collapse
Affiliation(s)
- Huimin Wu
- Pulmonary, Critical Care and Sleep Medicine Section, Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, 73104, United States; Department of Adult Respiratory Care, University of Oklahoma Medical Center, Oklahoma City, OK, 73104, United States.
| | - Bobby Chasteen
- Department of Adult Respiratory Care, University of Oklahoma Medical Center, Oklahoma City, OK, 73104, United States.
| |
Collapse
|
30
|
Parfait M, Rohrs E, Joussellin V, Mayaux J, Decavèle M, Reynolds S, Similowski T, Demoule A, Dres M. An Initial Investigation of Diaphragm Neurostimulation in Patients with Acute Respiratory Distress Syndrome. Anesthesiology 2024; 140:483-494. [PMID: 38088791 DOI: 10.1097/aln.0000000000004873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
BACKGROUND Lung protective ventilation aims at limiting lung stress and strain. By reducing the amount of pressure transmitted by the ventilator into the lungs, diaphragm neurostimulation offers a promising approach to minimize ventilator-induced lung injury. This study investigates the physiologic effects of diaphragm neurostimulation in acute respiratory distress syndrome (ARDS) patients. The hypothesis was that diaphragm neurostimulation would improve oxygenation, would limit the distending pressures of the lungs, and would improve cardiac output. METHODS Patients with moderate ARDS were included after 48 h of invasive mechanical ventilation and had a left subclavian catheter placed to deliver bilateral transvenous phrenic nerve stimulation. Two 60-min volume-controlled mechanical ventilation (control) sessions were interspersed by two 60-min diaphragm neurostimulation sessions delivered continually, in synchrony with the ventilator. Gas exchange, lung mechanics, chest electrical impedance tomography, and cardiac index were continuously monitored and compared across four sessions. The primary endpoint was the Pao2/fraction of inspired oxygen (Fio2) ratio at the end of each session, and the secondary endpoints were lung mechanics and hemodynamics. RESULTS Thirteen patients were enrolled but the catheter could not be inserted in one, leaving 12 patients for analysis. All sessions were conducted without interruption and well tolerated. The Pao2/Fio2 ratio did not change during the four sessions. Median (interquartile range) plateau pressure was 23 (20 to 31) cm H2O and 21 (17 to 25) cm H2O, driving pressure was 14 (12 to 18) cm H2O and 11 (10 to 13) cm H2O, and end-inspiratory transpulmonary pressure was 9 (5 to 11) cm H2O and 7 (4 to 11) cm H2O during mechanical ventilation alone and during mechanical ventilation + neurostimulation session, respectively. The dorsal/ventral ventilation surface ratio was 0.70 (0.54 to 0.91) when on mechanical ventilation and 1.20 (0.76 to 1.33) during the mechanical ventilation + neurostimulation session. The cardiac index was 2.7 (2.3 to 3.5) l · min-1 · m-2 on mechanical ventilation and 3.0 (2.4 to 3.9) l · min-1 · m-2 on mechanical ventilation + neurostimulation. CONCLUSIONS This proof-of-concept study showed the feasibility of short-term diaphragm neurostimulation in conjunction with mechanical ventilation in ARDS patients. Diaphragm neurostimulation was associated with positive effects on lung mechanics and on hemodynamics. EDITOR’S PERSPECTIVE
Collapse
Affiliation(s)
- Mélodie Parfait
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France; Assistance Publique-Hôpitaux de Paris, Sorbonne Université, Hôpital Pitié-Salpêtrière, Service de Médecine Intensive - Réanimation (Département "R3S"), Paris, France
| | - Elizabeth Rohrs
- Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Vincent Joussellin
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France
| | - Julien Mayaux
- Assistance Publique-Hôpitaux de Paris, Sorbonne Université, Hôpital Pitié-Salpêtrière, Service de Médecine Intensive - Réanimation (Département "R3S"), Paris, France
| | - Maxens Decavèle
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France; Assistance Publique-Hôpitaux de Paris, Sorbonne Université, Hôpital Pitié-Salpêtrière, Service de Médecine Intensive - Réanimation (Département "R3S"), Paris, France
| | - Steven Reynolds
- Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Thomas Similowski
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France; Assistance Publique-Hôpitaux de Paris, Sorbonne Université, Hôpital Pitié-Salpêtrière, Département "R3S," Paris, France
| | - Alexandre Demoule
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France; Assistance Publique-Hôpitaux de Paris, Sorbonne Université, Hôpital Pitié-Salpêtrière, Service de Médecine Intensive - Réanimation (Département "R3S"), Paris, France
| | - Martin Dres
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France; Assistance Publique-Hôpitaux de Paris, Sorbonne Université, Hôpital Pitié-Salpêtrière, Service de Médecine Intensive - Réanimation (Département "R3S"), Paris, France
| |
Collapse
|
31
|
Lepage-Farrell A, Tabone L, Plante V, Kawaguchi A, Feder J, Al Omar S, Emeriaud G. Noninvasive Neurally Adjusted Ventilatory Assist in Infants With Bronchiolitis: Respiratory Outcomes in a Single-Center, Retrospective Cohort, 2016-2018. Pediatr Crit Care Med 2024; 25:201-211. [PMID: 38019615 DOI: 10.1097/pcc.0000000000003407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
OBJECTIVES To describe our experience of using noninvasive neurally adjusted ventilatory assist (NIV-NAVA) in infants with bronchiolitis, its association with the evolution of respiratory effort, and PICU outcomes. DESIGN Retrospective analysis of a prospectively curated, high-frequency electronic database. SETTING A PICU in a university-affiliated maternal-child health center in Canada. PATIENTS Patients younger than 2 years old who were admitted with a diagnosis of acute bronchiolitis and treated with NIV-NAVA from October 2016 to June 2018. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Patient characteristics, as well as respiratory and physiologic parameters, including electrical diaphragmatic activity (Edi), were extracted from the electronic database. Respiratory effort was estimated using the modified Wood Clinical Asthma Score (mWCAS) and the inspiratory Edi. A comparison in the respiratory effort data was made between the 2 hours before and 2 hours after starting NIV-NAVA. In the two seasons, 64 of 205 bronchiolitis patients were supported with NIV-NAVA. These 64 patients had a median (interquartile range [IQR]) age of 52 days (32-92 d), and there were 36 of 64 males. Treatment with NIV-NAVA was used after failure of first-tier noninvasive respiratory support; 25 of 64 patients (39%) had at least one medical comorbidity. NIV-NAVA initiation was associated with a moderate decrease in mWCAS from 3.0 (IQR, 2.5-3.5) to 2.5 (IQR, 2.0-3.0; p < 0.001). NIV-NAVA initiation was also associated with a statistically significant decrease in Edi ( p < 0.01). However, this decrease was only clinically relevant in infants with a 2-hour baseline Edi greater than 20 μV; here, the before and after Edi was 44 μV (IQR, 33-54 μV) compared with 27 μV (IQR, 21-36 μV), respectively ( p < 0.001). Overall, six of 64 patients (9%) required endotracheal intubation. CONCLUSIONS In this single-center retrospective cohort, in infants with bronchiolitis who were considered to have failed first-tier noninvasive respiratory support, the use of NIV-NAVA was associated with a rapid decrease in respiratory effort and a 9% intubation rate.
Collapse
Affiliation(s)
- Alex Lepage-Farrell
- Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada
- Department of Pediatrics, London Children's Hospital, Western University, London, ON, Canada
| | - Laurence Tabone
- Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada
- Pediatric Intensive Care and Pediatric Emergency Department, CHU Clocheville, Tours, France
| | - Virginie Plante
- Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada
| | - Atsushi Kawaguchi
- Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada
- Department of Pediatrics, Pediatric Critical Care, St Marianna University, Kawasaki, Japan
| | - Joshua Feder
- Department of Pediatrics, Pediatric Intensive Care Unit, Montreal Children's Hospital, McGill University, Montreal, QC, Canada
| | - Sally Al Omar
- CHU Sainte Justine Research Center, Université de Montréal, Montreal, QC, Canada
| | - Guillaume Emeriaud
- Department of Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada
- CHU Sainte Justine Research Center, Université de Montréal, Montreal, QC, Canada
| |
Collapse
|
32
|
Ratano D, Zhang B, Dianti J, Georgopoulos D, Brochard LJ, Chan TCY, Goligher EC. Lung- and diaphragm-protective strategies in acute respiratory failure: an in silico trial. Intensive Care Med Exp 2024; 12:20. [PMID: 38416269 PMCID: PMC10902250 DOI: 10.1186/s40635-024-00606-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 02/21/2024] [Indexed: 02/29/2024] Open
Abstract
BACKGROUND Lung- and diaphragm-protective (LDP) ventilation may prevent diaphragm atrophy and patient self-inflicted lung injury in acute respiratory failure, but feasibility is uncertain. The objectives of this study were to estimate the proportion of patients achieving LDP targets in different modes of ventilation, and to identify predictors of need for extracorporeal carbon dioxide removal (ECCO2R) to achieve LDP targets. METHODS An in silico clinical trial was conducted using a previously published mathematical model of patient-ventilator interaction in a simulated patient population (n = 5000) with clinically relevant physiological characteristics. Ventilation and sedation were titrated according to a pre-defined algorithm in pressure support ventilation (PSV) and proportional assist ventilation (PAV+) modes, with or without adjunctive ECCO2R, and using ECCO2R alone (without ventilation or sedation). Random forest modelling was employed to identify patient-level factors associated with achieving targets. RESULTS After titration, the proportion of patients achieving targets was lower in PAV+ vs. PSV (37% vs. 43%, odds ratio 0.78, 95% CI 0.73-0.85). Adjunctive ECCO2R substantially increased the probability of achieving targets in both PSV and PAV+ (85% vs. 84%). ECCO2R alone without ventilation or sedation achieved LDP targets in 9%. The main determinants of success without ECCO2R were lung compliance, ventilatory ratio, and strong ion difference. In silico trial results corresponded closely with the results obtained in a clinical trial of the LDP titration algorithm (n = 30). CONCLUSIONS In this in silico trial, many patients required ECCO2R in combination with mechanical ventilation and sedation to achieve LDP targets. ECCO2R increased the probability of achieving LDP targets in patients with intermediate degrees of derangement in elastance and ventilatory ratio.
Collapse
Affiliation(s)
- Damian Ratano
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto General Hospital, 585 University Ave, 9-MaRS-9024, Toronto, ON, M5G 2N2, Canada
- Intensive Care and Burn Unit, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Binghao Zhang
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Canada
| | - Jose Dianti
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto General Hospital, 585 University Ave, 9-MaRS-9024, Toronto, ON, M5G 2N2, Canada
| | - Dimitrios Georgopoulos
- Department of Intensive Care Medicine, University Hospital of Heraklion, University of Crete, Heraklion, Greece
| | - Laurent J Brochard
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto General Hospital, 585 University Ave, 9-MaRS-9024, Toronto, ON, M5G 2N2, Canada
| | - Timothy C Y Chan
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Canada
| | - Ewan C Goligher
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto General Hospital, 585 University Ave, 9-MaRS-9024, Toronto, ON, M5G 2N2, Canada.
- Division of Respirology, Department of Medicine, University Health Network, Toronto, Canada.
- Toronto General Hospital Research Institute, University Health Network, Toronto, Canada.
- Department of Physiology, University of Toronto, Toronto, Canada.
| |
Collapse
|
33
|
Wennen M, Claassen W, Heunks L. Setting positive end-expiratory pressure: role in diaphragm-protective ventilation. Curr Opin Crit Care 2024; 30:61-68. [PMID: 38085880 DOI: 10.1097/mcc.0000000000001126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
PURPOSE OF REVIEW With mechanical ventilation, positive end-expiratory pressure (PEEP) is applied to improve oxygenation and lung homogeneity. However, PEEP setting has been hypothesized to contribute to critical illness associated diaphragm dysfunction via several mechanisms. Here, we discuss the impact of PEEP on diaphragm function, activity and geometry. RECENT FINDINGS PEEP affects diaphragm geometry: it induces a caudal movement of the diaphragm dome and shortening of the zone of apposition. This results in reduced diaphragm neuromechanical efficiency. After prolonged PEEP application, the zone of apposition adapts by reducing muscle fiber length, so-called longitudinal muscle atrophy. When PEEP is withdrawn, for instance during a spontaneous breathing trial, the shortened diaphragm muscle fibers may over-stretch which may lead to (additional) diaphragm myotrauma. Furthermore, PEEP may either increase or decrease respiratory drive and resulting respiratory effort, probably depending on lung recruitability. Finally, the level of PEEP can also influence diaphragm activity in the expiratory phase, which may be an additional mechanism for diaphragm myotrauma. SUMMARY Setting PEEP could play an important role in both lung and diaphragm protective ventilation. Both high and low PEEP levels could potentially introduce or exacerbate diaphragm myotrauma. Today, the impact of PEEP setting on diaphragm structure and function is in its infancy, and clinical implications are largely unknown.
Collapse
Affiliation(s)
- Myrte Wennen
- Department of Intensive Care, Erasmus Medical Center, Rotterdam
| | - Wout Claassen
- Department of Physiology, Amsterdam UMC, location VUmc, Amsterdam
| | - Leo Heunks
- Department of Intensive Care, Erasmus Medical Center, Rotterdam
- Department of intensive care medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| |
Collapse
|
34
|
Gong S, Ding X, Wang X. Assessment of Pulmonary Circulation of Critically Ill Patients Based on Critical Care Ultrasound. J Clin Med 2024; 13:722. [PMID: 38337417 PMCID: PMC10856787 DOI: 10.3390/jcm13030722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/01/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
Pulmonary circulation is crucial in the human circulatory system, facilitating the oxygenation of blood as it moves from the right heart to the lungs and then to the left heart. However, during critical illness, pulmonary microcirculation can be vulnerable to both intrapulmonary and extrapulmonary injuries. To assess these potential injuries in critically ill patients, critical point-of-care ultrasound can be used to quantitatively and qualitatively evaluate the right atrium, right ventricle, pulmonary artery, lung, pulmonary vein, and left atrium along the direction of blood flow. This assessment is particularly valuable for common ICU diseases such as acute respiratory distress syndrome (ARDS), sepsis, pulmonary hypertension, and cardiogenic pulmonary edema. It has significant potential for diagnosing and treating these conditions in critical care medicine.
Collapse
Affiliation(s)
| | - Xin Ding
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Beijing 100730, China;
| | - Xiaoting Wang
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Beijing 100730, China;
| |
Collapse
|
35
|
Colak M, Ceylan G, Topal S, Sarac Sandal O, Atakul G, Soydan E, Sarı F, Hepduman P, Karaarslan U, Ağın H. Evaluation of renal near-infrared spectroscopy for predicting extubation outcomes in the pediatric intensive care setting. Front Pediatr 2024; 11:1326550. [PMID: 38313403 PMCID: PMC10834679 DOI: 10.3389/fped.2023.1326550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 12/11/2023] [Indexed: 02/06/2024] Open
Abstract
Background In pediatric intensive care units, extubation failure following invasive mechanical ventilation poses significant health risks. Determining readiness for extubation in children can minimize associated morbidity and mortality. This study investigates the potential role of renal near-infrared spectroscopy (RrSO2) in predicting extubation failure in pediatric patients. Methods A total of 84 patients aged between 1 month and 18 years, mechanically ventilated for at least 24 h, were included in this prospective study. RrSO2 levels were measured using near-infrared spectroscopy before and during an extubation readiness test (ERT). The primary outcome measure was extubation failure, defined as a need for reintubation within 48 h. Results Of the 84 patients, 71 (84.6%) were successfully extubated, while 13 (15.4%) failed extubation. RrSO2 was found to be lower in the failed extubation group, also decrease in RrSO2 values during ERT was significantly greater in patients with extubation failure. ROC analysis indicated a decrease in ΔRrSO2 of more than 6.15% from baseline as a significant predictor of extubation failure, with a sensitivity of 0.984 and a specificity of 0.889. Conclusion Monitoring changes in RrSO2 values may serve as a helpful tool to predict extubation failure in pediatric patients. Further multi-center research is warranted to improve the generalizability and reliability of these findings.
Collapse
Affiliation(s)
- Mustafa Colak
- Department of Paediatric Intensive Care Unit, Basaksehir Cam and Sakura City Hospital, Istanbul, Turkey
- Department of Paediatric Intensive Care Unit, Dr Behcet Uz Children's Disease and Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Gokhan Ceylan
- Department of Paediatric Intensive Care Unit, Dr Behcet Uz Children's Disease and Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
- Department of Medical Research, Hamilton Medical AG, Bonaduz, Switzerland
| | - Sevgi Topal
- Department of Paediatric Intensive Care Unit, Dr Behcet Uz Children's Disease and Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Ozlem Sarac Sandal
- Department of Paediatric Intensive Care Unit, Dr Behcet Uz Children's Disease and Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Gulhan Atakul
- Department of Paediatric Intensive Care Unit, Dr Behcet Uz Children's Disease and Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Ekin Soydan
- Department of Paediatric Intensive Care Unit, Dr Behcet Uz Children's Disease and Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Ferhat Sarı
- Department of Paediatric Intensive Care Unit, Dr Behcet Uz Children's Disease and Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Pinar Hepduman
- Department of Paediatric Intensive Care Unit, Dr Behcet Uz Children's Disease and Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Utku Karaarslan
- Department of Paediatric Intensive Care Unit, Dr Behcet Uz Children's Disease and Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Hasan Ağın
- Department of Paediatric Intensive Care Unit, Dr Behcet Uz Children's Disease and Surgery Training and Research Hospital, Health Sciences University, Izmir, Turkey
| |
Collapse
|
36
|
Stamatopoulou V, Akoumianaki E, Vaporidi K, Stamatopoulos E, Kondili E, Georgopoulos D. Driving pressure of respiratory system and lung stress in mechanically ventilated patients with active breathing. Crit Care 2024; 28:19. [PMID: 38217038 PMCID: PMC10785492 DOI: 10.1186/s13054-024-04797-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 01/03/2024] [Indexed: 01/14/2024] Open
Abstract
BACKGROUND During control mechanical ventilation (CMV), the driving pressure of the respiratory system (ΔPrs) serves as a surrogate of transpulmonary driving pressure (ΔPlung). Expiratory muscle activity that decreases end-expiratory lung volume may impair the validity of ΔPrs to reflect ΔPlung. This prospective observational study in patients with acute respiratory distress syndrome (ARDS) ventilated with proportional assist ventilation (PAV+), aimed to investigate: (1) the prevalence of elevated ΔPlung, (2) the ΔPrs-ΔPlung relationship, and (3) whether dynamic transpulmonary pressure (Plungsw) and effort indices (transdiaphragmatic and respiratory muscle pressure swings) remain within safe limits. METHODS Thirty-one patients instrumented with esophageal and gastric catheters (n = 22) were switched from CMV to PAV+ and respiratory variables were recorded, over a maximum of 24 h. To decrease the contribution of random breaths with irregular characteristics, a 7-breath moving average technique was applied. In each patient, measurements were also analyzed per deciles of increasing lung elastance (Elung). Patients were divided into Group A, if end-inspiratory transpulmonary pressure (PLEI) increased as Elung increased, and Group B, which showed a decrease or no change in PLEI with Elung increase. RESULTS In 44,836 occluded breaths, ΔPlung ≥ 12 cmH2O was infrequently observed [0.0% (0.0-16.9%) of measurements]. End-expiratory lung volume decrease, due to active expiration, was associated with underestimation of ΔPlung by ΔPrs, as suggested by a negative linear relationship between transpulmonary pressure at end-expiration (PLEE) and ΔPlung/ΔPrs. Group A included 17 and Group B 14 patients. As Elung increased, ΔPlung increased mainly due to PLEI increase in Group A, and PLEE decrease in Group B. Although ΔPrs had an area receiver operating characteristic curve (AUC) of 0.87 (95% confidence intervals 0.82-0.92, P < 0.001) for ΔPlung ≥ 12 cmH2O, this was due exclusively to Group A [0.91 (0.86-0.95), P < 0.001]. In Group B, ΔPrs showed no predictive capacity for detecting ΔPlung ≥ 12 cmH2O [0.65 (0.52-0.78), P > 0.05]. Most of the time Plungsw and effort indices remained within safe range. CONCLUSION In patients with ARDS ventilated with PAV+, injurious tidal lung stress and effort were infrequent. In the presence of expiratory muscle activity, ΔPrs underestimated ΔPlung. This phenomenon limits the usefulness of ΔPrs as a surrogate of tidal lung stress, regardless of the mode of support.
Collapse
Affiliation(s)
- Vaia Stamatopoulou
- Intensive Care Medicine Department, University Hospital of Heraklion, Heraklion, Crete, Greece
| | - Evangelia Akoumianaki
- Intensive Care Medicine Department, University Hospital of Heraklion, Heraklion, Crete, Greece
- Medical School, University of Crete, Heraklion, Crete, Greece
| | - Katerina Vaporidi
- Intensive Care Medicine Department, University Hospital of Heraklion, Heraklion, Crete, Greece
- Medical School, University of Crete, Heraklion, Crete, Greece
| | - Efstathios Stamatopoulos
- Decision Support Systems, Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, Athens, Greece
| | - Eumorfia Kondili
- Intensive Care Medicine Department, University Hospital of Heraklion, Heraklion, Crete, Greece
- Medical School, University of Crete, Heraklion, Crete, Greece
| | - Dimitrios Georgopoulos
- Intensive Care Medicine Department, University Hospital of Heraklion, Heraklion, Crete, Greece.
- Medical School, University of Crete, Heraklion, Crete, Greece.
| |
Collapse
|
37
|
Boscolo A, Pettenuzzo T, Zarantonello F, Sella N, Pistollato E, De Cassai A, Congedi S, Paiusco I, Bertoldo G, Crociani S, Toma F, Mormando G, Lorenzoni G, Gregori D, Navalesi P. Asymmetrical high-flow nasal cannula performs similarly to standard interface in patients with acute hypoxemic post-extubation respiratory failure: a pilot study. BMC Pulm Med 2024; 24:21. [PMID: 38191347 PMCID: PMC10775427 DOI: 10.1186/s12890-023-02820-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 12/18/2023] [Indexed: 01/10/2024] Open
Abstract
BACKGROUND Standard high-flow nasal cannula (HFNC) is a respiratory support device widely used to manage post-extubation hypoxemic acute respiratory failure (hARF) due to greater comfort, oxygenation, alveolar recruitment, humidification, and reduction of dead space, as compared to conventional oxygen therapy. On the contrary, the effects of the new asymmetrical HFNC interface (Optiflow® Duet system (Fisher & Paykel, Healthcare, Auckland, New Zealand) is still under discussion. Our aim is investigating whether the use of asymmetrical HFNC interface presents any relevant difference, compared with the standard configuration, on lung aeration (as assessed by end-expiratory lung impedance (EELI) measured by electrical impedance tomography (EIT)), diaphragm ultrasound thickening fraction (TFdi) and excursion (DE), ventilatory efficiency (estimated by corrected minute ventilation (MV)), gas exchange, dyspnea, and comfort. METHODS Pilot physiological crossover randomized controlled study enrolling 20 adults admitted to the Intensive Care unit, invasively ventilated for at least 24 h, and developing post-extubation hARF, i.e., PaO2/set FiO2 < 300 mmHg during Venturi mask (VM) within 120 min after extubation. Each HFNC configuration was applied in a randomized 60 min sequence at a flow rate of 60 L/min. RESULTS Global EELI, TFdi, DE, ventilatory efficiency, gas exchange and dyspnea were not significantly different, while comfort was greater during asymmetrical HFNC support, as compared to standard interface (10 [7-10] and 8 [7-9], p-value 0.044). CONCLUSIONS In post-extubation hARF, the use of the asymmetrical HFNC, as compared to standard HFNC interface, slightly improved patient comfort without affecting lung aeration, diaphragm activity, ventilatory efficiency, dyspnea and gas exchange. CLINICAL TRIAL NUMBER ClinicalTrial.gov. REGISTRATION NUMBER NCT05838326 (01/05/2023). NEW & NOTEWORTHY The asymmetrical high-flow nasal cannula oxygen therapy (Optiflow® Duet system (Fisher & Paykel, Healthcare, Auckland, New Zealand) provides greater comfort as compared to standard interface; while their performance in term of lung aeration, diaphragm activity, ventilatory efficiency, dyspnea, and gas exchange is similar.
Collapse
Affiliation(s)
- Annalisa Boscolo
- Department of Medicine (DIMED), University of Padua, Padua, Italy
- Institute of Anaesthesia and Intensive Care, Padua University Hospital, 13, Giustiniani Street, Padua, 35128, Italy
- Thoracic Surgery and Lung Transplant Unit, Department of Cardiac, Thoracic, Vascular Sciences, and Public Health, University of Padua, Padua, Italy
| | - Tommaso Pettenuzzo
- Institute of Anaesthesia and Intensive Care, Padua University Hospital, 13, Giustiniani Street, Padua, 35128, Italy
| | - Francesco Zarantonello
- Institute of Anaesthesia and Intensive Care, Padua University Hospital, 13, Giustiniani Street, Padua, 35128, Italy
| | - Nicolò Sella
- Institute of Anaesthesia and Intensive Care, Padua University Hospital, 13, Giustiniani Street, Padua, 35128, Italy.
| | - Elisa Pistollato
- Department of Medicine (DIMED), University of Padua, Padua, Italy
| | - Alessandro De Cassai
- Institute of Anaesthesia and Intensive Care, Padua University Hospital, 13, Giustiniani Street, Padua, 35128, Italy
| | - Sabrina Congedi
- Department of Medicine (DIMED), University of Padua, Padua, Italy
| | - Irene Paiusco
- Department of Medicine (DIMED), University of Padua, Padua, Italy
| | - Giacomo Bertoldo
- Department of Medicine (DIMED), University of Padua, Padua, Italy
| | - Silvia Crociani
- Department of Medicine (DIMED), University of Padua, Padua, Italy
| | - Francesca Toma
- Department of Medicine (DIMED), University of Padua, Padua, Italy
| | - Giulia Mormando
- Emergency Department, Padua University Hospital, Padua, Italy
| | - Giulia Lorenzoni
- Unit of Biostatistics, Epidemiology, and Public Health, Department of Cardiac, Vascular Sciences, and Public Health, University of Padua, Thoracic, Padua, Italy
| | - Dario Gregori
- Unit of Biostatistics, Epidemiology, and Public Health, Department of Cardiac, Vascular Sciences, and Public Health, University of Padua, Thoracic, Padua, Italy
| | - Paolo Navalesi
- Department of Medicine (DIMED), University of Padua, Padua, Italy
- Institute of Anaesthesia and Intensive Care, Padua University Hospital, 13, Giustiniani Street, Padua, 35128, Italy
| |
Collapse
|
38
|
Papoutsi E, Andrianopoulos I, Mavrikaki V, Bolaki M, Stamatopoulou V, Toli E, Papathanakos G, Koulouras V, Kondili E, Siempos II, Vaporidi K. A combination of mild-moderate hypoxemia and low compliance is highly prevalent in persistent ARDS: a retrospective study. Respir Res 2024; 25:1. [PMID: 38173002 PMCID: PMC10765810 DOI: 10.1186/s12931-023-02626-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 12/04/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND The Acute Respiratory Distress Syndrome (ARDS) is characterized by lung inflammation and edema, impairing both oxygenation and lung compliance. Recent studies reported a dissociation between oxygenation and compliance (severe hypoxemia with preserved compliance) in early ARDS and COVID-19-related-ARDS (CARDS). During the pandemic, in patients requiring prolonged mechanical ventilation, we observed the opposite combination (mild-moderate hypoxemia but significantly impaired compliance). The purpose of our study was to investigate the prevalence of this combination of mild-moderate hypoxemia and impaired compliance in persistent ARDS and CARDS. METHODS For this retrospective study, we used individual patient-level data from two independent cohorts of ARDS patients. The ARDSNet cohort included patients from four ARDS Network randomized controlled trials. The CARDS cohort included patients with ARDS due to COVID-19 hospitalized in two intensive care units in Greece. We used a threshold of 150 for PaO2/FiO2 and 30 ml/cmH2O for compliance, estimated the prevalence of each of the four combinations of oxygenation and compliance at baseline, and examined the change in its prevalence from baseline to day 21 in the ARDSNet and CARDS cohorts. RESULTS The ARDSNet cohort included 2909 patients and the CARDS cohort included 349 patients. The prevalence of the combination of mild-moderate hypoxemia and low compliance increased from baseline to day 21 both in the ARDSNet cohort (from 22.2 to 42.7%) and in the CARDS cohort (from 3.1 to 33.3%). Among surviving patients with low compliance, oxygenation improved over time. The 60-day mortality rate was higher for patients who had mild-moderate hypoxemia and low compliance on day 21 (28% and 56% in ARDSNet and CARDS), compared to those who had mild-moderate hypoxemia and high compliance (20% and 50%, respectively). CONCLUSIONS Among patients with ARDS who require prolonged controlled mechanical ventilation, regardless of ARDS etiology, a dissociation between oxygenation and compliance characterized by mild-moderate hypoxemia but low compliance becomes increasingly prevalent. The findings of this study highlight the importance of monitoring mechanics in patients with persistent ARDS.
Collapse
Affiliation(s)
- Eleni Papoutsi
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | | | - Vasiliki Mavrikaki
- Department of Intensive Care, University Hospital of Heraklion, University of Crete School of Medicine, Voutes Campus, Office 8A4, Heraklion, Crete, 70013, Greece
| | - Maria Bolaki
- Department of Intensive Care, University Hospital of Heraklion, University of Crete School of Medicine, Voutes Campus, Office 8A4, Heraklion, Crete, 70013, Greece
| | - Vagia Stamatopoulou
- Department of Intensive Care, University Hospital of Heraklion, University of Crete School of Medicine, Voutes Campus, Office 8A4, Heraklion, Crete, 70013, Greece
| | - Eleni Toli
- Department of Intensive Care Unit, University Hospital of Ioannina, Ioannina, Greece
| | - Georgios Papathanakos
- Department of Intensive Care Unit, University Hospital of Ioannina, Ioannina, Greece
| | - Vasilios Koulouras
- Department of Intensive Care Unit, University Hospital of Ioannina, Ioannina, Greece
| | - Eumorfia Kondili
- Department of Intensive Care, University Hospital of Heraklion, University of Crete School of Medicine, Voutes Campus, Office 8A4, Heraklion, Crete, 70013, Greece
| | - Ilias I Siempos
- First Department of Critical Care Medicine and Pulmonary Services, Evangelismos Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Katerina Vaporidi
- Department of Intensive Care, University Hospital of Heraklion, University of Crete School of Medicine, Voutes Campus, Office 8A4, Heraklion, Crete, 70013, Greece.
| |
Collapse
|
39
|
Qadir N, Sahetya S, Munshi L, Summers C, Abrams D, Beitler J, Bellani G, Brower RG, Burry L, Chen JT, Hodgson C, Hough CL, Lamontagne F, Law A, Papazian L, Pham T, Rubin E, Siuba M, Telias I, Patolia S, Chaudhuri D, Walkey A, Rochwerg B, Fan E. An Update on Management of Adult Patients with Acute Respiratory Distress Syndrome: An Official American Thoracic Society Clinical Practice Guideline. Am J Respir Crit Care Med 2024; 209:24-36. [PMID: 38032683 PMCID: PMC10870893 DOI: 10.1164/rccm.202311-2011st] [Citation(s) in RCA: 34] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Indexed: 12/01/2023] Open
Abstract
Background: This document updates previously published Clinical Practice Guidelines for the management of patients with acute respiratory distress syndrome (ARDS), incorporating new evidence addressing the use of corticosteroids, venovenous extracorporeal membrane oxygenation, neuromuscular blocking agents, and positive end-expiratory pressure (PEEP). Methods: We summarized evidence addressing four "PICO questions" (patient, intervention, comparison, and outcome). A multidisciplinary panel with expertise in ARDS used the Grading of Recommendations, Assessment, Development, and Evaluation framework to develop clinical recommendations. Results: We suggest the use of: 1) corticosteroids for patients with ARDS (conditional recommendation, moderate certainty of evidence), 2) venovenous extracorporeal membrane oxygenation in selected patients with severe ARDS (conditional recommendation, low certainty of evidence), 3) neuromuscular blockers in patients with early severe ARDS (conditional recommendation, low certainty of evidence), and 4) higher PEEP without lung recruitment maneuvers as opposed to lower PEEP in patients with moderate to severe ARDS (conditional recommendation, low to moderate certainty), and 5) we recommend against using prolonged lung recruitment maneuvers in patients with moderate to severe ARDS (strong recommendation, moderate certainty). Conclusions: We provide updated evidence-based recommendations for the management of ARDS. Individual patient and illness characteristics should be factored into clinical decision making and implementation of these recommendations while additional evidence is generated from much-needed clinical trials.
Collapse
|
40
|
Panelli A, Verfuß MA, Dres M, Brochard L, Schaller SJ. Phrenic nerve stimulation to prevent diaphragmatic dysfunction and ventilator-induced lung injury. Intensive Care Med Exp 2023; 11:94. [PMID: 38109016 PMCID: PMC10728426 DOI: 10.1186/s40635-023-00577-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/06/2023] [Indexed: 12/19/2023] Open
Abstract
Side effects of mechanical ventilation, such as ventilator-induced diaphragmatic dysfunction (VIDD) and ventilator-induced lung injury (VILI), occur frequently in critically ill patients. Phrenic nerve stimulation (PNS) has been a valuable tool for diagnosing VIDD by assessing respiratory muscle strength in response to magnetic PNS. The detection of pathophysiologically reduced respiratory muscle strength is correlated with weaning failure, longer mechanical ventilation time, and mortality. Non-invasive electromagnetic PNS designed for diagnostic use is a reference technique that allows clinicians to measure transdiaphragm pressure as a surrogate parameter for diaphragm strength and functionality. This helps to identify diaphragm-related issues that may impact weaning readiness and respiratory support requirements, although lack of lung volume measurement poses a challenge to interpretation. In recent years, therapeutic PNS has been demonstrated as feasible and safe in lung-healthy and critically ill patients. Effects on critically ill patients' VIDD or diaphragm atrophy outcomes are the subject of ongoing research. The currently investigated application forms are diverse and vary from invasive to non-invasive and from electrical to (electro)magnetic PNS, with most data available for electrical stimulation. Increased inspiratory muscle strength and improved diaphragm activity (e.g., excursion, thickening fraction, and thickness) indicate the potential of the technique for beneficial effects on clinical outcomes as it has been successfully used in spinal cord injured patients. Concerning the potential for electrophrenic respiration, the data obtained with non-invasive electromagnetic PNS suggest that the induced diaphragmatic contractions result in airway pressure swings and tidal volumes remaining within the thresholds of lung-protective mechanical ventilation. PNS holds significant promise as a therapeutic intervention in the critical care setting, with potential applications for ameliorating VIDD and the ability for diaphragm training in a safe lung-protective spectrum, thereby possibly reducing the risk of VILI indirectly. Outcomes of such diaphragm training have not been sufficiently explored to date but offer the perspective for enhanced patient care and reducing weaning failure. Future research might focus on using PNS in combination with invasive and non-invasive assisted ventilation with automatic synchronisation and the modulation of PNS with spontaneous breathing efforts. Explorative approaches may investigate the feasibility of long-term electrophrenic ventilation as an alternative to positive pressure-based ventilation.
Collapse
Affiliation(s)
- Alessandro Panelli
- Charité - Universitätsmedizin Berlin, Department of Anesthesiology and Intensive Care Medicine (CCM/CVK), Berlin, Germany
| | - Michael A Verfuß
- Charité - Universitätsmedizin Berlin, Department of Anesthesiology and Intensive Care Medicine (CCM/CVK), Berlin, Germany
| | - Martin Dres
- Sorbonne Université, INSERM UMRS 1158, Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France
- Service de Médecine Intensive et Réanimation, Département R3S, APHP, Sorbonne Université, Hôpital Pitie Salpêtrière, Paris, France
| | - Laurent Brochard
- Unity Health Toronto, Keenan Research Centre for Biomedical Science, Li Ka Shing Knowledge Institute, Toronto, ON, Canada
- Interdepartmental Division of Critical Care, University of Toronto, Toronto, Canada
| | - Stefan J Schaller
- Charité - Universitätsmedizin Berlin, Department of Anesthesiology and Intensive Care Medicine (CCM/CVK), Berlin, Germany.
- Technical University of Munich, School of Medicine and Health, Klinikum Rechts der Isar, Department of Anesthesiology and Intensive Care Medicine, Munich, Germany.
| |
Collapse
|
41
|
da Silva AL, Bessa CM, Rocha NN, Carvalho EB, Magalhaes RF, Capelozzi VL, Robba C, Pelosi P, Samary CS, Rocco PRM, Silva PL. Pressure-support compared with pressure-controlled ventilation mitigates lung and brain injury in experimental acute ischemic stroke in rats. Intensive Care Med Exp 2023; 11:93. [PMID: 38102452 PMCID: PMC10724101 DOI: 10.1186/s40635-023-00580-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND We aimed to evaluate the pulmonary and cerebral effects of low-tidal volume ventilation in pressure-support (PSV) and pressure-controlled (PCV) modes at two PEEP levels in acute ischemic stroke (AIS). METHODS In this randomized experimental study, AIS was induced by thermocoagulation in 30 healthy male Wistar rats. After 24 h, AIS animals were randomly assigned to PSV or PCV with VT = 6 mL/kg and PEEP = 2 cmH2O (PSV-PEEP2 and PCV-PEEP2) or PEEP = 5 cmH2O (PSV-PEEP5 and PCV-PEEP5) for 2 h. Lung mechanics, arterial blood gases, and echocardiography were evaluated before and after the experiment. Lungs and brain tissue were removed for histologic and molecular biology analysis. The primary endpoint was diffuse alveolar damage (DAD) score; secondary endpoints included brain histology and brain and lung molecular biology markers. RESULTS In lungs, DAD was lower with PSV-PEEP5 than PCV-PEEP5 (p < 0.001); interleukin (IL)-1β was lower with PSV-PEEP2 than PCV-PEEP2 (p = 0.016) and PSV-PEEP5 than PCV-PEEP5 (p = 0.046); zonula occludens-1 (ZO-1) was lower in PCV-PEEP5 than PCV-PEEP2 (p = 0.042). In brain, necrosis, hemorrhage, neuropil edema, and CD45 + microglia were lower in PSV than PCV animals at PEEP = 2 cmH2O (p = 0.036, p = 0.025, p = 0.018, p = 0.011, respectively) and PEEP = 5 cmH2O (p = 0.003, p = 0.003, p = 0.007, p = 0.003, respectively); IL-1β was lower while ZO-1 was higher in PSV-PEEP2 than PCV-PEEP2 (p = 0.009, p = 0.007, respectively), suggesting blood-brain barrier integrity. Claudin-5 was higher in PSV-PEEP2 than PSV-PEEP5 (p = 0.036). CONCLUSION In experimental AIS, PSV compared with PCV reduced lung and brain injury. Lung ZO-1 reduced in PCV with PEEP = 2 versus PEEP = 5 cmH2O, while brain claudin-5 increased in PSV with PEEP = 2 versus PEEP = 5 cmH2O.
Collapse
Affiliation(s)
- Adriana L da Silva
- Laboratory of Pulmonary Investigation, Centro de Ciências da Saúde, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, S/N, Bloco G-014, Ilha Do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Camila M Bessa
- Laboratory of Pulmonary Investigation, Centro de Ciências da Saúde, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, S/N, Bloco G-014, Ilha Do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Nazareth N Rocha
- Laboratory of Pulmonary Investigation, Centro de Ciências da Saúde, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, S/N, Bloco G-014, Ilha Do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
- Department of Physiology and Pharmacology, Biomedical Institute, Fluminense Federal University, Rio de Janeiro, Brazil
| | - Eduardo B Carvalho
- Laboratory of Pulmonary Investigation, Centro de Ciências da Saúde, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, S/N, Bloco G-014, Ilha Do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Raquel F Magalhaes
- Laboratory of Pulmonary Investigation, Centro de Ciências da Saúde, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, S/N, Bloco G-014, Ilha Do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Vera L Capelozzi
- Department of Pathology, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Chiara Robba
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Genoa, Italy
- Anesthesia and Critical Care, San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy
| | - Paolo Pelosi
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genoa, Genoa, Italy
- Anesthesia and Critical Care, San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy
| | - Cynthia S Samary
- Laboratory of Pulmonary Investigation, Centro de Ciências da Saúde, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, S/N, Bloco G-014, Ilha Do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
- Department of Cardiorespiratory and Musculoskeletal Physiotherapy, Faculty of Physiotherapy, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Patricia R M Rocco
- Laboratory of Pulmonary Investigation, Centro de Ciências da Saúde, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, S/N, Bloco G-014, Ilha Do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Pedro L Silva
- Laboratory of Pulmonary Investigation, Centro de Ciências da Saúde, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Avenida Carlos Chagas Filho, S/N, Bloco G-014, Ilha Do Fundão, Rio de Janeiro, RJ, 21941-902, Brazil.
| |
Collapse
|
42
|
Grieco DL, Pintaudi G, Bongiovanni F, Anzellotti GM, Menga LS, Cesarano M, Dell’Anna AM, Rosá T, Delle Cese L, Bello G, Giammatteo V, Gennenzi V, Tanzarella ES, Cutuli SL, De Pascale G, De Gaetano A, Maggiore SM, Antonelli M. Recruitment-to-inflation Ratio Assessed through Sequential End-expiratory Lung Volume Measurement in Acute Respiratory Distress Syndrome. Anesthesiology 2023; 139:801-814. [PMID: 37523486 PMCID: PMC10723770 DOI: 10.1097/aln.0000000000004716] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 04/15/2022] [Accepted: 07/25/2023] [Indexed: 08/02/2023]
Abstract
BACKGROUND Positive end-expiratory pressure (PEEP) benefits in acute respiratory distress syndrome are driven by lung dynamic strain reduction. This depends on the variable extent of alveolar recruitment. The recruitment-to-inflation ratio estimates recruitability across a 10-cm H2O PEEP range through a simplified maneuver. Whether recruitability is uniform or not across this range is unknown. The hypotheses of this study are that the recruitment-to-inflation ratio represents an accurate estimate of PEEP-induced changes in dynamic strain, but may show nonuniform behavior across the conventionally tested PEEP range (15 to 5 cm H2O). METHODS Twenty patients with moderate-to-severe COVID-19 acute respiratory distress syndrome underwent a decremental PEEP trial (PEEP 15 to 13 to 10 to 8 to 5 cm H2O). Respiratory mechanics and end-expiratory lung volume by nitrogen dilution were measured the end of each step. Gas exchange, recruited volume, recruitment-to-inflation ratio, and changes in dynamic, static, and total strain were computed between 15 and 5 cm H2O (global recruitment-to-inflation ratio) and within narrower PEEP ranges (granular recruitment-to-inflation ratio). RESULTS Between 15 and 5 cm H2O, median [interquartile range] global recruitment-to-inflation ratio was 1.27 [0.40 to 1.69] and displayed a linear correlation with PEEP-induced dynamic strain reduction (r = -0.94; P < 0.001). Intraindividual recruitment-to-inflation ratio variability within the narrower ranges was high (85% [70 to 109]). The relationship between granular recruitment-to-inflation ratio and PEEP was mathematically described by a nonlinear, quadratic equation (R2 = 0.96). Granular recruitment-to-inflation ratio across the narrower PEEP ranges itself had a linear correlation with PEEP-induced reduction in dynamic strain (r = -0.89; P < 0.001). CONCLUSIONS Both global and granular recruitment-to-inflation ratio accurately estimate PEEP-induced changes in lung dynamic strain. However, the effect of 10 cm H2O of PEEP on lung strain may be nonuniform. Granular recruitment-to-inflation ratio assessment within narrower PEEP ranges guided by end-expiratory lung volume measurement may aid more precise PEEP selection, especially when the recruitment-to-inflation ratio obtained with the simplified maneuver between PEEP 15 and 5 cm H2O yields intermediate values that are difficult to interpret for a proper choice between a high and low PEEP strategy. EDITOR’S PERSPECTIVE
Collapse
Affiliation(s)
- Domenico Luca Grieco
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Gabriele Pintaudi
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Filippo Bongiovanni
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Gian Marco Anzellotti
- Department of Medical, Oral and Biotechnological Sciences, School of Medicine and Health Sciences, Section of Anesthesia, Analgesia, Perioperative and Intensive Care, SS, Annunziata Hospital, Gabriele d’Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Luca Salvatore Menga
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Melania Cesarano
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Antonio M. Dell’Anna
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Tommaso Rosá
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Luca Delle Cese
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Giuseppe Bello
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Valentina Giammatteo
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Veronica Gennenzi
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Eloisa S. Tanzarella
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Salvatore L. Cutuli
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Gennaro De Pascale
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Andrea De Gaetano
- Consiglio Nazionale delle Ricerche, IRIB Istituto per la Ricerca e l’Innovazione Biomedica, Palermo, Italy; IASI Istituto per l’Analisi dei Sistemi ed Informatica, Rome, Italy; Department of Biomatics, Óbuda University, Budapest, Hungary
| | - Salvatore M. Maggiore
- Department of Medical, Oral and Biotechnological Sciences, School of Medicine and Health Sciences, Section of Anesthesia, Analgesia, Perioperative and Intensive Care, SS, Annunziata Hospital, Gabriele d’Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Massimo Antonelli
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Rome, Italy; Anesthesia, Emergency and Intensive Care Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| |
Collapse
|
43
|
Mauri T, Furfaro D, Kassis EB. Physiology-Based Indications to Improve Outcome of Awake Extracorporeal Membrane Oxygenation. Crit Care Med 2023; 51:1840-1843. [PMID: 37971344 DOI: 10.1097/ccm.0000000000006053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Affiliation(s)
- Tommaso Mauri
- Department of Anesthesia, Critical Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
- Division of Pulmonary and Critical Care Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
| | - David Furfaro
- Division of Pulmonary and Critical Care Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
| | - Elias Baedorf Kassis
- Division of Pulmonary and Critical Care Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
| |
Collapse
|
44
|
Ito Y, Herrera MG, Hotz JC, Kyogoku M, Newth CJL, Bhalla AK, Takeuchi M, Khemani RG. Estimation of inspiratory effort using airway occlusion maneuvers in ventilated children: a secondary analysis of an ongoing randomized trial testing a lung and diaphragm protective ventilation strategy. Crit Care 2023; 27:466. [PMID: 38031116 PMCID: PMC10685539 DOI: 10.1186/s13054-023-04754-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 11/21/2023] [Indexed: 12/01/2023] Open
Abstract
BACKGROUND Monitoring respiratory effort in ventilated patients is important to balance lung and diaphragm protection. Esophageal manometry remains the gold standard for monitoring respiratory effort but is invasive and requires expertise for its measurement and interpretation. Airway pressures during occlusion maneuvers may provide an alternative, although pediatric data are limited. We sought to determine the correlation between change in esophageal pressure during tidal breathing (∆Pes) and airway pressure measured during three airway occlusion maneuvers: (1) expiratory occlusion pressure (Pocc), (2) airway occlusion pressure (P0.1), and (3) respiratory muscle pressure index (PMI) in children. We also sought to explore pediatric threshold values for these pressures to detect excessive or insufficient respiratory effort. METHODS Secondary analysis of physiologic data from children between 1 month and 18 years of age with acute respiratory distress syndrome enrolled in an ongoing randomized clinical trial testing a lung and diaphragm protective ventilation strategy (REDvent, R01HL124666). ∆Pes, Pocc, P0.1, and PMI were measured. Repeated measure correlations were used to investigate correlation coefficients between ∆Pes and the three measures, and linear regression equations were generated to identify potential therapeutic thresholds. RESULTS There were 653 inspiratory and 713 expiratory holds from 97 patients. Pocc had the strongest correlation with ∆Pes (r = 0.68), followed by PMI (r = 0.60) and P0.1 (r = 0.42). ∆Pes could be reliably estimated using the regression equation ∆Pes = 0.66 [Formula: see text] Pocc (R2 = 0.82), with Pocc cut-points having high specificity and moderate sensitivity to detect respective ∆Pes thresholds for high and low respiratory effort. There were minimal differences in the relationship between Pocc and ∆Pes based on age (infant, child, adolescent) or mode of ventilation (SIMV versus Pressure Support), although these differences were more apparent with P0.1 and PMI. CONCLUSIONS Airway occlusion maneuvers may be appropriate alternatives to esophageal pressure measurement to estimate the inspiratory effort in children, and Pocc represents the most promising target. TRIAL REGISTRATION NCT03266016; August 23, 2017.
Collapse
Affiliation(s)
- Yukie Ito
- Department of Intensive Care, Osaka Women's and Children's Hospital, Osaka, Japan
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital Los Angeles, Los Angeles, USA
| | - Matías G Herrera
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital Los Angeles, Los Angeles, USA
- Department of Intensive Care, Hospital de Pediatría JP Garrahan, Buenos Aires, Argentina
| | - Justin C Hotz
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital Los Angeles, Los Angeles, USA
| | - Miyako Kyogoku
- Department of Intensive Care, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Christopher J L Newth
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital Los Angeles, Los Angeles, USA
- Department of Pediatrics, University of Southern California Keck School of Medicine, Los Angeles, USA
| | - Anoopindar K Bhalla
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital Los Angeles, Los Angeles, USA
- Department of Pediatrics, University of Southern California Keck School of Medicine, Los Angeles, USA
| | - Muneyuki Takeuchi
- Department of Intensive Care, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Robinder G Khemani
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital Los Angeles, Los Angeles, USA.
- Department of Pediatrics, University of Southern California Keck School of Medicine, Los Angeles, USA.
| |
Collapse
|
45
|
García-Valdés P, Fernández T, Jalil Y, Peñailillo L, Damiani LF. Eccentric Contractions of the Diaphragm During Mechanical Ventilation. Respir Care 2023; 68:1757-1762. [PMID: 37402586 PMCID: PMC10676256 DOI: 10.4187/respcare.11040] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2023]
Abstract
Diaphragm dysfunction is a highly prevalent phenomenon in patients receiving mechanical ventilation, mainly due to ventilatory over-assistance and the development of diaphragm disuse atrophy. Promoting diaphragm activation whenever possible and facilitating an adequate interaction between the patient and the ventilator is encouraged at the bedside to avoid myotrauma and further lung injury. Eccentric contractions of the diaphragm are defined as muscle activation while muscle fibers are lengthening within the exhalation phase. There is recent evidence that suggests that eccentric activation of the diaphragm is very frequent and may occur during post-inspiratory activity or under different types of patient-ventilator asynchronies, which include ineffective efforts, premature cycling, and reverse triggering. The consequences of this eccentric contraction of the diaphragm may have opposite effects, depending on the level of breathing effort. For instance, during high or excessive effort, eccentric contractions can result in diaphragm dysfunction and injured muscle fibers. Conversely, when eccentric contractions of the diaphragm occur along with low breathing effort, a preserved diaphragm function, better oxygenation, and more aerated lung tissue are observed. Despite this controversial evidence, evaluating the level of breathing effort at the bedside seems crucial and is highly recommended to optimize ventilatory therapy. The impact of eccentric contractions of the diaphragm on the patient's outcome remains to be elucidated.
Collapse
Affiliation(s)
- Patricio García-Valdés
- Departamento Ciencias de la Salud, Carrera de Kinesiología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile. Mr García-Valdés, Mrs Fernández, Mr Jalil, and Dr Damiani are affilated with the CardioREspirAtory Research Laboratory, Departamento Ciencias de la Salud, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Tiziana Fernández
- Departamento Ciencias de la Salud, Carrera de Kinesiología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile. Mr García-Valdés, Mrs Fernández, Mr Jalil, and Dr Damiani are affilated with the CardioREspirAtory Research Laboratory, Departamento Ciencias de la Salud, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Yorschua Jalil
- Departamento Ciencias de la Salud, Carrera de Kinesiología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile. Mr García-Valdés, Mrs Fernández, Mr Jalil, and Dr Damiani are affilated with the CardioREspirAtory Research Laboratory, Departamento Ciencias de la Salud, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Luis Peñailillo
- Exercise and Rehabilitation Sciences Institute, School of Physical Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile
| | - L Felipe Damiani
- Departamento Ciencias de la Salud, Carrera de Kinesiología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile. Mr García-Valdés, Mrs Fernández, Mr Jalil, and Dr Damiani are affilated with the CardioREspirAtory Research Laboratory, Departamento Ciencias de la Salud, Pontificia Universidad Católica de Chile, Santiago, Chile.
| |
Collapse
|
46
|
Morris IS, Bassi T, Oosthuysen C, Goligher EC. Phrenic Nerve Stimulation for Acute Respiratory Failure. Respir Care 2023; 68:1736-1747. [PMID: 37875317 PMCID: PMC10676252 DOI: 10.4187/respcare.11439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Diaphragm inactivity during invasive mechanical ventilation leads to diaphragm atrophy and weakness, hemodynamic instability, and ventilatory heterogeneity. Absent respiratory drive and effort can, therefore, worsen injury to both lung and diaphragm and is a major cause of failure to wean. Phrenic nerve stimulation (PNS) can maintain controlled levels of diaphragm activity independent of intrinsic drive and as such may offer a promising approach to achieving lung and diaphragm protective ventilatory targets. Whereas PNS has an established role in the management of chronic respiratory failure, there is emerging interest in how its multisystem putative benefits may be temporarily harnessed in the management of invasively ventilated patients with acute respiratory failure.
Collapse
Affiliation(s)
- Idunn S Morris
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada; Department of Medicine, Division of Respirology, University Health Network, Toronto, Canada; Department of Physiology, University of Toronto, Toronto, Canada; and Department of Intensive Care Medicine, Nepean Hospital, Sydney, Australia
| | - Thiago Bassi
- Department of Medicine, Division of Respirology, University Health Network, Toronto, Canada; and Lungpacer Medical, Exton, Pennsylvania
| | - Charissa Oosthuysen
- Department of Medicine, Division of Respirology, University Health Network, Toronto, Canada
| | - Ewan C Goligher
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada; Department of Medicine, Division of Respirology, University Health Network, Toronto, Canada; Department of Physiology, University of Toronto, Toronto, Canada; and Toronto General Hospital Research Institute, Toronto, Canada.
| |
Collapse
|
47
|
Yang YL, Liu Y, Gao R, Song DJ, Zhou YM, Miao MY, Chen W, Wang SP, Wang YF, Zhang L, Zhou JX. Use of airway pressure-based indices to detect high and low inspiratory effort during pressure support ventilation: a diagnostic accuracy study. Ann Intensive Care 2023; 13:111. [PMID: 37955842 PMCID: PMC10643759 DOI: 10.1186/s13613-023-01209-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 10/27/2023] [Indexed: 11/14/2023] Open
Abstract
BACKGROUND Assessment of the patient's respiratory effort is essential during assisted ventilation. We aimed to evaluate the accuracy of airway pressure (Paw)-based indices to detect potential injurious inspiratory effort during pressure support (PS) ventilation. METHODS In this prospective diagnostic accuracy study conducted in four ICUs in two academic hospitals, 28 adult acute respiratory failure patients undergoing PS ventilation were enrolled. A downward PS titration was conducted from 20 cmH2O to 2 cmH2O at a 2 cmH2O interval. By performing an end-expiratory airway occlusion maneuver, the negative Paw generated during the first 100 ms (P0.1) and the maximal negative swing of Paw (∆Pocc) were measured. After an end-inspiratory airway occlusion, Paw reached a plateau, and the magnitude of change in plateau from peak Paw was measured as pressure muscle index (PMI). Esophageal pressure was monitored and inspiratory muscle pressure (Pmus) and Pmus-time product per minute (PTPmus/min) were used as the reference standard for the patient's effort. High and low effort was defined as Pmus > 10 and < 5 cmH2O, or PTPmus/min > 200 and < 50 cmH2O s min-1, respectively. RESULTS A total of 246 levels of PS were tested. The low inspiratory effort was diagnosed in 145 (59.0%) and 136 (55.3%) PS levels using respective Pmus and PTPmus/min criterion. The receiver operating characteristic area of the three Paw-based indices by the respective two criteria ranged from 0.87 to 0.95, and balanced sensitivity (0.83-0.96), specificity (0.74-0.88), and positive (0.80-0.91) and negative predictive values (0.78-0.94) were obtained. The high effort was diagnosed in 34 (13.8%) and 17 (6.9%) support levels using Pmus and PTPmus/min criterion, respectively. High receiver operating characteristic areas of the three Paw-based indices by the two criteria were found (0.93-0.95). A high sensitivity (0.80-1.00) and negative predictive value (0.97-1.00) were found with a low positive predictive value (0.23-0.64). CONCLUSIONS By performing simple airway occlusion maneuvers, the Paw-based indices could be reliably used to detect low inspiratory efforts. Non-invasive and easily accessible characteristics support their potential bedside use for avoiding over-assistance. More evaluation of their performance is required in cohorts with high effort.
Collapse
Affiliation(s)
- Yan-Lin Yang
- Department of Critical Care Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- Clinical and Research Center on Acute Lung Injury, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Yang Liu
- Clinical and Research Center on Acute Lung Injury, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
- Surgical Intensive Care Unit, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Ran Gao
- Department of Critical Care Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - De-Jing Song
- Surgical Intensive Care Unit, China-Japan Friendship Hospital, Beijing, China
| | - Yi-Min Zhou
- Department of Critical Care Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Ming-Yue Miao
- Clinical and Research Center on Acute Lung Injury, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Wei Chen
- Department of Critical Care Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Shu-Peng Wang
- Surgical Intensive Care Unit, China-Japan Friendship Hospital, Beijing, China
| | - Yue-Fu Wang
- Clinical and Research Center on Acute Lung Injury, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
- Surgical Intensive Care Unit, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Linlin Zhang
- Department of Critical Care Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- Clinical and Research Center on Acute Lung Injury, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Jian-Xin Zhou
- Department of Critical Care Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
- Clinical and Research Center on Acute Lung Injury, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China.
| |
Collapse
|
48
|
Damiani LF, Goligher EC. Lung and Diaphragm Protection During Mechanical Ventilation: Synchrony Matters. Crit Care Med 2023; 51:1618-1621. [PMID: 37902352 DOI: 10.1097/ccm.0000000000006013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Affiliation(s)
- L Felipe Damiani
- Departamento Ciencias de la Salud, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- CardioREspirAtory Research Laboratory (CREAR), Departamento Ciencias de la Salud, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ewan C Goligher
- Toronto General Hospital Research Institute, Toronto, ON, Canada
- Department of Physiology, University of Toronto, Toronto, ON, Canada
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
- Division of Respirology, Department of Medicine, University Health Network, Toronto, ON, Canada
| |
Collapse
|
49
|
Hashimoto H, Yoshida T, Firstiogusran AMF, Taenaka H, Nukiwa R, Koyama Y, Uchiyama A, Fujino Y. Asynchrony Injures Lung and Diaphragm in Acute Respiratory Distress Syndrome. Crit Care Med 2023; 51:e234-e242. [PMID: 37459198 DOI: 10.1097/ccm.0000000000005988] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
OBJECTIVES Patient-ventilator asynchrony is often observed during mechanical ventilation and is associated with higher mortality. We hypothesized that patient-ventilator asynchrony causes lung and diaphragm injury and dysfunction. DESIGN Prospective randomized animal study. SETTING University research laboratory. SUBJECTS Eighteen New Zealand White rabbits. INTERVENTIONS Acute respiratory distress syndrome (ARDS) model was established by depleting surfactants. Each group (assist control, breath stacking, and reverse triggering) was simulated by phrenic nerve stimulation. The effects of each group on lung function, lung injury (wet-to-dry lung weight ratio, total protein, and interleukin-6 in bronchoalveolar lavage), diaphragm function (diaphragm force generation curve), and diaphragm injury (cross-sectional area of diaphragm muscle fibers, histology) were measured. Diaphragm RNA sequencing was performed using breath stacking and assist control ( n = 2 each). MEASUREMENTS AND MAIN RESULTS Inspiratory effort generated by phrenic nerve stimulation was small and similar among groups (esophageal pressure swing ≈ -2.5 cm H 2 O). Breath stacking resulted in the largest tidal volume (>10 mL/kg) and highest inspiratory transpulmonary pressure, leading to worse oxygenation, worse lung compliance, and lung injury. Reverse triggering did not cause lung injury. No asynchrony events were observed in assist control, whereas eccentric contractions occurred in breath stacking and reverse triggering, but more frequently in breath stacking. Breath stacking and reverse triggering significantly reduced diaphragm force generation. Diaphragmatic histology revealed that the area fraction of abnormal muscle was ×2.5 higher in breath stacking (vs assist control) and ×2.1 higher in reverse triggering (vs assist control). Diaphragm RNA sequencing analysis revealed that genes associated with muscle differentiation and contraction were suppressed, whereas cytokine- and chemokine-mediated proinflammatory responses were activated in breath stacking versus assist control. CONCLUSIONS Breath stacking caused lung and diaphragm injury, whereas reverse triggering caused diaphragm injury. Thus, careful monitoring and management of patient-ventilator asynchrony may be important to minimize lung and diaphragm injury from spontaneous breathing in ARDS.
Collapse
Affiliation(s)
- Haruka Hashimoto
- All authors: Department of Anesthesiology and Intensive Care Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
| | | | | | | | | | | | | | | |
Collapse
|
50
|
Kneyber MCJ, Cheifetz IM. Mechanical ventilation during pediatric extracorporeal life support. Curr Opin Pediatr 2023; 35:596-602. [PMID: 37497765 DOI: 10.1097/mop.0000000000001277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
PURPOSE OF REVIEW To discuss the role of ventilator induced lung injury (VILI) and patient self-inflicted lung injury in ventilated children supported on extracorporeal membrane oxygenation (ECMO). RECENT FINDINGS While extracorporeal life support is used routinely used every day around the globe to support neonatal, pediatric, and adult patients with refractory cardiac and/or respiratory failure, the optimal approach to mechanical ventilation, especially for those with acute respiratory distress syndrome (ARDS), remains unknown and controversial. Given the lack of definitive data in this population, one must rely on available evidence in those with ARDS not supported with ECMO and extrapolate adult observations. Ventilatory management should include, as a minimum standard, limiting inspiratory and driving pressures, providing a sufficient level of positive end-expiratory pressure, and setting a low rate to reduce mechanical power. Allowing for spontaneous breathing and use of pulmonary specific ancillary treatment modalities must be individualized, while balancing the risk and benefits. Future studies delineating the best strategies for optimizing MV during pediatric extracorporeal life support are much needed. SUMMARY Future investigations will hopefully provide the needed evidence and better understanding of the overall goal of reducing mechanical ventilation intensity to decrease risk for VILI and promote lung recovery for those supported with ECMO.
Collapse
Affiliation(s)
- Martin C J Kneyber
- Department of Paediatrics, Division of Paediatric Critical Care Medicine, Beatrix Children's Hospital, University Medical Center Groningen
- Critical care, Anesthesiology, Peri-operative & Emergency medicine (CAPE), University of Groningen, Groningen, The Netherlands
| | - Ira M Cheifetz
- Department of Pediatrics, Rainbow Babies and Children's Hospital and Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| |
Collapse
|