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Maldonado-Beltrán I, Ríos-Ayala MA, Osuna-Padilla IA, Rodríguez-Moguel NC, Lugo-Goytia G, Hernández-Cárdenas CM. Changes in pulmonary mechanics from supine to prone position measured through esophageal manometry in critically ill patients with COVID-19 severe acute respiratory distress syndrome. Med Intensiva 2024; 48:386-391. [PMID: 37580222 DOI: 10.1016/j.medine.2023.07.013] [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: 08/16/2023]
Abstract
OBJECTIVE To describe changes in pulmonary mechanics when changing from supine position (SP) to prone position (PP) in mechanically ventilated (MV) patients with Acute Respiratory Distress Syndrome (ARDS) due to severe COVID-19. DESIGN Retrospective cohort. SETTING Intensive Care Unit of the National Institute of Respiratory Diseases (Mexico City). PATIENTS COVID-19 patients on MV due to ARDS, with criteria for PP. INTERVENTION Measurement of pulmonary mechanics in patients on SP to PP, using esophageal manometry. MAIN VARIABLES OF INTEREST Changes in lung and thoracic wall mechanics in SP and PP RESULTS: Nineteen patients were included. Changes during first prone positioning were reported. Reductions in lung stress (10.6 vs 7.7, p=0.02), lung strain (0.74 vs 0.57, p=0.02), lung elastance (p=0.01), chest wall elastance (p=0.003) and relation of respiratory system elastances (p=0.001) were observed between patients when changing from SP to PP. No differences were observed in driving pressure (p=0.19) and transpulmonary pressure during inspiration (p=0.70). CONCLUSIONS Changes in pulmonary mechanics were observed when patients were comparing values of supine position with measurements obtained 24h after prone positioning. Esophageal pressure monitoring may facilitate ventilator management despite patient positioning.
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Affiliation(s)
- Ismael Maldonado-Beltrán
- Departamento de Áreas Críticas, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Ciudad de México, Mexico
| | - Martín Armando Ríos-Ayala
- Departamento de Áreas Críticas, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Ciudad de México, Mexico
| | - Iván Armando Osuna-Padilla
- Departamento de Áreas Críticas, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Ciudad de México, Mexico
| | - Nadia Carolina Rodríguez-Moguel
- Departamento de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Ciudad de México, Mexico
| | - Gustavo Lugo-Goytia
- Departamento de Áreas Críticas, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Ciudad de México, Mexico
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Wang X, Guo K, Sun J, Yang Y, Wu Y, Tang X, Xu Y, Chen Q, Zeng S, Wang L, Liu S. Semirecumbent Positioning During Anesthesia Recovery and Postoperative Hypoxemia: A Randomized Clinical Trial. JAMA Netw Open 2024; 7:e2416797. [PMID: 38941098 PMCID: PMC11214118 DOI: 10.1001/jamanetworkopen.2024.16797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Accepted: 04/09/2024] [Indexed: 06/29/2024] Open
Abstract
Importance The efficacy of a semirecumbent position (SRP) in reducing postoperative hypoxemia during anesthesia emergence is unclear despite its widespread use. Objective To determine the differences in postoperative hypoxemia between patients in an SRP and a supine position. Design, Setting, and Participants This randomized clinical trial was performed at a tertiary hospital in China between March 20, 2021, and May 10, 2022. Patients scheduled to undergo laparoscopic upper abdominal surgery under general anesthesia were enrolled. Study recruitment and follow-up are complete. Interventions Patients were randomized to 1 of the following positions at the end of the operation until leaving the postanesthesia care unit: supine (group S), 15° SRP (group F), or 30° SRP (group T). Main Outcomes and Measures The primary outcome was the incidence of postoperative hypoxemia in the postanesthesia care unit. Severe hypoxemia was also evaluated. Results Out of 700 patients (364 men [52.0%]; mean [SD] age, 47.8 [11.3] years), 233 were randomized to group S (126 men [54.1%]; mean [SD] age, 48.2 [10.9] years), 233 to group F (122 men [52.4%]; mean [SD] age, 48.1 [10.9] years), and 234 to group T (118 women [50.4%]; mean [SD] age, 47.2 [12.1] years). Postoperative hypoxemia differed significantly among the 3 groups (group S, 109 of 233 [46.8%]; group F, 105 of 233 [45.1%]; group T, 76 of 234 [32.5%]; P = .002). This difference was statistically significant for groups T vs S (risk ratio [RR], 0.69 [95% CI, 0.55-0.87]; P = .002) and groups T vs F (RR, 0.72 [95% CI, 0.57-0.91]; P = .007), but not for groups F vs S (RR, 0.96 [95% CI, 0.79-1.17]; P = .78). Severe hypoxemia also differed among the 3 groups (group S, 61 of 233 [26.2%]; group F, 53 of 233 [22.7%]; group T, 36 of 234 [15.4%]; P = .01). This difference was statistically significant for groups T vs S (RR, 0.59 [95% CI, 0.41-0.85]; P = .005). Conclusions and Relevance In this randomized clinical trial of SRP during anesthesia recovery in patients undergoing laparoscopic upper abdominal surgery, postoperative hypoxemia was significantly reduced in group T compared with group F or group S. Trial Registration Chinese Clinical Trial Registry Identifier: ChiCTR2100045087.
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Affiliation(s)
- Xinghe Wang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
- Department of Anesthesiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
- Department of Anesthesiology, Xuzhou Central Hospital, Xuzhou, China
| | - Kedi Guo
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
- Department of Anesthesiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Jia Sun
- Department of Anesthesiology, Xuzhou Central Hospital, Xuzhou, China
| | - Yuping Yang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
- Department of Anesthesiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yan Wu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
- Department of Anesthesiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xihui Tang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
- Department of Anesthesiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yuqing Xu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
- Department of Anesthesiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Qingsong Chen
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
- Department of Anesthesiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Si Zeng
- Department of Anesthesiology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Liwei Wang
- Department of Anesthesiology, Xuzhou Central Hospital, Xuzhou, China
| | - Su Liu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
- Department of Anesthesiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
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Yu W, Liang Y, Gao J, Xiong J. Study on risk factors and treatment strategies of hypoxemia after acute type a aortic dissection surgery. J Cardiothorac Surg 2024; 19:273. [PMID: 38702812 PMCID: PMC11067146 DOI: 10.1186/s13019-024-02775-y] [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: 01/02/2024] [Accepted: 04/24/2024] [Indexed: 05/06/2024] Open
Abstract
Acute type A aortic dissection is a life-threatening cardiovascular disease characterized by rapid onset and high mortality. Emergency surgery is the preferred and reliable treatment option. However, postoperative complications significantly impact patient prognosis. Hypoxemia, a common complication, poses challenges in clinical treatment, negatively affecting patient outcomes and increasing the risk of mortality. Therefore, it is crucial to study and comprehend the risk factors and treatment strategies for hypoxemia following acute type A aortic dissection to facilitate early intervention.
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Affiliation(s)
- Wenbo Yu
- The First Clinical Medical College of Gannan Medical University, Ganzhou, 341000, China
| | - Yuan Liang
- The First Clinical Medical College of Gannan Medical University, Ganzhou, 341000, China
| | - Jianfeng Gao
- The First Clinical Medical College of Gannan Medical University, Ganzhou, 341000, China
| | - Jianxian Xiong
- First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, China.
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Jing P, Wu C, Du C, Zhou L, Gu L. Predictive value of plasma sICAM-1 and sP-Selectins in the risk of death in patients with acute respiratory distress syndrome. J Med Biochem 2024; 43:209-218. [PMID: 38699690 PMCID: PMC11062343 DOI: 10.5937/jomb0-45340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 11/09/2023] [Indexed: 05/05/2024] Open
Abstract
Background To evaluate the predictive value of sICAM-1 and sP-Selectins in the risk of death in a prospective cohort of adult acute respiratory distress syndrome (ARDS). Methods Adult ARDS patients were included. Plasma sICAM-1, sP-Selectins, and inflammatory cytokines (TNF-α, IL-1b, IL-6, IL-8, and IL-17A) were detected in ARDS subjects. The correlation between different factors and the potential of sICAM-1 and sP-Selectins as endothelial markers to predict the risk of deathfrom ARDS was analyzed.
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Affiliation(s)
- Pan Jing
- Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Department of Pulmonary and Critical Care Medicine, Shanghai City, China
| | - Chaomin Wu
- Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Department of Pulmonary and Critical Care Medicine, Shanghai City, China
| | - Chunling Du
- Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Department of Pulmonary and Critical Care Medicine, Shanghai City, China
| | - Lei Zhou
- Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Department of Pulmonary and Critical Care Medicine, Shanghai City, China
| | - Liang Gu
- Qingpu Branch of Zhongshan Hospital Affiliated to Fudan University, Department of Pulmonary and Critical Care Medicine, Shanghai City, China
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Messineo L, Joosten S, Perger E. Mechanisms relating to sleeping position to the endotypes of sleep disordered breathing. Curr Opin Pulm Med 2023; 29:543-549. [PMID: 37578380 DOI: 10.1097/mcp.0000000000001004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
PURPOSE Obstructive sleep apnea (OSA) severity varies considerably depending on the body position during sleep in certain subjects. Such variability may be underpinned by specific, body position-related changes in OSA pathophysiological determinants, or endotypes. Also head position relative to trunk may influence OSA endotypes. However, no studies to our knowledge have reviewed the endotype variations according to head or body position up to now. RECENT FINDINGS Several findings illustrate that supine OSA is mostly attributable to unfavorable upper airway anatomy compared to lateral position. However, a reduced lung volume, with consequent ventilatory instability (or elevated loop gain), may also play a role. Furthermore, preliminary findings suggest that prone and reclined positions may have a beneficial effect on collapsibility and loop gain. SUMMARY Sleeping supine induces many unfavorable pathophysiological changes, especially in certain predisposed OSA patients. Little is known on the influence of other sleep positions on key endotypic traits.
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Affiliation(s)
- Ludovico Messineo
- Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham & Women's Hospital & Harvard Medical School, Boston, Massachusetts, USA
| | - Simon Joosten
- Monash Lung, Sleep, Allergy & Immunology, Monash Health, Melbourne, Australia
- School of Clinical Sciences, Monash University, Victoria, Australia
- Epworth Partners
| | - Elisa Perger
- Istituto Auxologico Italiano, IRCCS, Sleep Disorders Center & Department of Cardiovascular, Neural and Metabolic Sciences, San Luca Hospital, Milan, Italy
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Liu HY, Zhang SP, Zhang CX, Gao QY, Liu YY, Ge SL. Postoperative hypoxemia for patients undergoing Stanford type A aortic dissection. World J Clin Cases 2023; 11:3140-3147. [PMID: 37274044 PMCID: PMC10237117 DOI: 10.12998/wjcc.v11.i14.3140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 03/06/2023] [Accepted: 04/04/2023] [Indexed: 05/16/2023] Open
Abstract
Clinically, it is widely recognized that surgical treatment is the preferred and reliable option for Stanford type A aortic dissection. Stanford type A aortic dissection is an emergent and serious cardiovascular disease characterized with an acute onset, poor prognosis, and high mortality. However, the incidences of postoperative complications are relatively higher due to the complexity of the disease and its intricate procedure. It has been considered that hypoxemia, one of the most common postoperative complications, plays an important role in having a worse clinical prognosis. Therefore, the effective intervention of postoperative hypoxemia is significant for the improved prognosis of patients with Stanford type A aortic dissection.
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Affiliation(s)
- Hai-Yuan Liu
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China
| | - Shuai-Peng Zhang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China
| | - Cheng-Xin Zhang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China
| | - Qing-Yun Gao
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China
| | - Yu-Yong Liu
- First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230032, Anhui Province, China
| | - Sheng-Lin Ge
- First Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei 230032, Anhui Province, China
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Rezoagli E, Bastia L, Brochard L, Bellani G. Physical manoeuvres in patients with ARDS and low compliance: bedside approaches to detect lung hyperinflation and optimise mechanical ventilation. Eur Respir J 2023; 61:61/5/2202169. [PMID: 37208034 DOI: 10.1183/13993003.02169-2022] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 03/30/2023] [Indexed: 05/21/2023]
Affiliation(s)
- Emanuele Rezoagli
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Department of Emergency and Intensive Care, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
- Co-first authors
| | - Luca Bastia
- Neurointensive Care Unit, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
- Co-first authors
| | - Laurent Brochard
- Keenan Research Centre for Biomedical Science, Li Ka Shing Knowledge Institute, Unity Health Toronto, Toronto, ON, Canada
- Interdepartmental Division of Critical Care, University of Toronto, Toronto, ON, Canada
- Co-senior authors
| | - Giacomo Bellani
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Department of Emergency and Intensive Care, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
- Co-senior authors
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8
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Rezoagli E, Chen L, Bellani G. Editorial: Lung monitoring in respiratory failure. Front Med (Lausanne) 2023; 10:1155898. [PMID: 36926322 PMCID: PMC10013969 DOI: 10.3389/fmed.2023.1155898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 02/14/2023] [Indexed: 03/08/2023] Open
Affiliation(s)
- Emanuele Rezoagli
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.,Department of Emergency and Intensive Care, Terapia intensiva e Semintensiva adulti e pediatrica, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Gerardo dei Tintori, Monza, Italy
| | - Lu Chen
- Keenan Research Centre, St Michael's Hospital, Unity Health Toronto, Toronto, ON, Canada.,Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
| | - Giacomo Bellani
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.,Department of Emergency and Intensive Care, Terapia intensiva e Semintensiva adulti e pediatrica, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Gerardo dei Tintori, Monza, Italy
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9
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Yarahmadi S, Ebrahimzadeh F, Mohamadipour F, Cheraghian T, Eskini M. Effect of Prone Position on Clinical Outcomes of Non-Intubated Patients with Covid-19: A Randomized Clinical Trial. Collegian 2022; 30:449-456. [PMID: 36591534 PMCID: PMC9792421 DOI: 10.1016/j.colegn.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 12/14/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022]
Abstract
Background Prone positioning (PP) is a well-known respiratory support approach. Limited data are available for the use of PP in non-intubated patients with COVID-19. Aim This study aims to investigate the effect of PP on the clinical outcomes of patients with COVID-19 pneumonia. Methods In This clinical trial, the participants in the PP group (n=41) were asked to lie comfortably in a prone position for 90 minutes. In the supine position (SP) group (n=41), the participants were asked to lie comfortably in a supine position for 90 minutes. Clinical data such as oxygen saturation, respiratory rate, the severity of dyspnea, mean arterial pressure, and pulse rate were assessed at 0 (immediately before), 30, 60, 90 minutes after the start of the intervention and 30 min after resuming the supine position. The participants in the PP group were then asked to intermittently stay in a prone position for a total of eight hours per 24 hours of hospitalization. The participants in the control group were asked to remain in their usual positions during the hospital stay. Finally, the length of hospital stay, intubation rate, and survival assessed. Findings Prone positioning was associated with significant improvement in oxygen saturation (P = 0.001), respiratory rate (P=0.004), the severity of dyspnea (P=0.014), and mean arterial pressure (P=0.027). There was no significant difference between the two groups in terms of pulse rate (P=0.890), hospital stay (P=0.994), intubation rate (P=0.324), and survival (P=0.091). Discussion Our results demonstrated that prone positioning showed marked improvement in some short-term clinical outcomes in non-intubated patients with COVID-19. Conclusion Prone positioning can be considered an inexpensive, accessible, and simple measure in awake non-intubated patients with COVID-19.
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Affiliation(s)
- Sajad Yarahmadi
- Social Determinants of Health Research Center, School of Nursing and Midwifery, Lorestan University of Medical Sciences, Khorramabad, Iran,Student Research Committee, Semnan University of Medical Sciences, Semnan, Iran,Correspondence to: Environmental Health Research Center, School of Nursing and Midwifery, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Farzad Ebrahimzadeh
- Nutritional Health Research Center, School of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Fatemeh Mohamadipour
- Social Determinants of Health Research Center, School of Nursing and Midwifery, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Tayebeh Cheraghian
- Cardiovascular Research Center, Shahid Rahimi Hospital, School of Nursing and Midwifery, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Mahtab Eskini
- Social Determinants of Health Research Center, Shohadaye Ashayer Hospital, School of Nursing and Midwifery, Lorestan University of Medical Sciences, Khorramabad, Iran
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Yang L, Bao Z, Zhang L, Lei X, Zhang L. Position management on pulmonary function and bronchopulmonary dysplasia in premature infants: study protocol for a randomised controlled trial. BMJ Open 2022; 12:e062291. [PMID: 36521889 PMCID: PMC9756205 DOI: 10.1136/bmjopen-2022-062291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION Bronchopulmonary dysplasia (BPD) is a common disease caused by various factors and mechanisms in premature infants. Owing to lung hypoplasia and the lack of alveolar surfactants in premature infants, oxygen therapy is often needed to maintain adequate breathing. Nevertheless, prolonged oxygen therapy can easily induce BPD, and there is currently no effective treatment. Therefore, the prevention of BPD in premature infants during hospitalisation is essential. Studies have revealed that the prone position can effectively improve the oxygenation of premature infants. However, a few studies have reported whether prone positioning can improve lung function and reduce BPD incidence. This trial will determine whether the prone position, compared with the supine position, can reduce BPD incidence and improve lung function in preterm infants. METHODS AND ANALYSIS This study protocol is for a single-centre, single-blind, randomised controlled trial of the prone position in premature infants. Following daily feeding, premature infants will be placed in the lateral position for 30 min; then they will be turned to the supine position (control group) or prone position (intervention group) for 2 hours each in the morning and afternoon. Moreover, infants in both groups will be placed in the supine or lateral position alternately according to their medical needs for the remaining time. The study begins when the premature infants are stable within 5 days after admission and ends when they are discharged from the hospital or at 36 weeks postmenstrual age. The primary outcome is the survival rate without BPD. The secondary outcomes include lung function parameters and lung oxygen saturation. ETHICS AND DISSEMINATION This trial is approved by the ethics committee of the Affiliated Hospital of Southwest Medical University, (ref approval no.KY2021186). The results will be published in a peer-reviewed journal. TRIAL REGISTRATION NUMBER ChiCTR2100049847.
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Affiliation(s)
- Liu Yang
- School of Nursing, Southwest Medical University, Luzhou, Sichuan, China
| | - Zhengrong Bao
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Department of Neonatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Lianyu Zhang
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Department of Neonatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Clinical Nursing Research Institute, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
| | - Xiaoping Lei
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Department of Neonatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Department of Perinatology, Southwest Medical University, Luzhou, Sichuan, China
| | - Lingping Zhang
- Department of Pediatrics, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Department of Neonatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
- Clinical Nursing Research Institute, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
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Dilken O, Rezoagli E, Yartaş Dumanlı G, Ürkmez S, Demirkıran O, Dikmen Y. Effect of prone positioning on end-expiratory lung volume, strain and oxygenation change over time in COVID-19 acute respiratory distress syndrome: A prospective physiological study. Front Med (Lausanne) 2022; 9:1056766. [PMID: 36530873 PMCID: PMC9755177 DOI: 10.3389/fmed.2022.1056766] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/21/2022] [Indexed: 11/12/2023] Open
Abstract
BACKGROUND Prone position (PP) is a recommended intervention in severe classical acute respiratory distress syndrome (ARDS). Changes in lung resting volume, respiratory mechanics and gas exchange during a 16-h cycle of PP in COVID-19 ARDS has not been yet elucidated. METHODS Patients with severe COVID-19 ARDS were enrolled between May and September 2021 in a prospective cohort study in a University Teaching Hospital. Lung resting volume was quantitatively assessed by multiple breath nitrogen wash-in/wash-out technique to measure the end-expiratory lung volume (EELV). Timepoints included the following: Baseline, Supine Position (S1); start of PP (P0), and every 4-h (P4; P8; P12) until the end of PP (P16); and Supine Position (S2). Respiratory mechanics and gas exchange were assessed at each timepoint. MEASUREMENTS AND MAIN RESULTS 40 mechanically ventilated patients were included. EELV/predicted body weight (PBW) increased significantly over time. The highest increase was observed at P4. The highest absolute EELV/PBW values were observed at the end of the PP (P16 vs S1; median 33.5 ml/kg [InterQuartileRange, 28.2-38.7] vs 23.4 ml/kg [18.5-26.4], p < 0.001). Strain decreased immediately after PP and remained stable between P4 and P16. PaO2/FiO2 increased during PP reaching the highest level at P12 (P12 vs S1; 163 [138-217] vs 81 [65-97], p < 0.001). EELV/PBW, strain and PaO2/FiO2 decreased at S2 although EELV/PBW and PaO2/FiO2 were still significantly higher as compared to S1. Both absolute values over time and changes of strain and PaO2/FiO2 at P16 and S2 versus S1 were strongly associated with EELV/PBW levels. CONCLUSION In severe COVID-19 ARDS, EELV steadily increased over a 16-h cycle of PP peaking at P16. Strain gradually decreased, and oxygenation improved over time. Changes in strain and oxygenation at the end of PP and back to SP were strongly associated with changes in EELV/PBW. Whether the change in EELV and oxygenation during PP may play a role on outcomes in COVID-ARDS deserves further investigation. CLINICAL TRIAL REGISTRATION [www.ClinicalTrials.gov], identifier [NCT04818164].
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Affiliation(s)
- Olcay Dilken
- Department of Intensive Care, Cerrahpaşa Faculty of Medicine, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Emanuele Rezoagli
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
- Department of Emergency and Intensive Care, ECMO Center, ASST Monza, San Gerardo University Teaching Hospital, Monza, Italy
| | - Güleren Yartaş Dumanlı
- Department of Intensive Care, Cerrahpaşa Faculty of Medicine, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Seval Ürkmez
- Department of Intensive Care, Cerrahpaşa Faculty of Medicine, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Oktay Demirkıran
- Department of Intensive Care, Cerrahpaşa Faculty of Medicine, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Yalım Dikmen
- Department of Intensive Care, Cerrahpaşa Faculty of Medicine, Istanbul University-Cerrahpaşa, Istanbul, Turkey
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12
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Mi L, Chi Y, Yuan S, He H, Long Y, Frerichs I, Zhao Z. Effect of Prone Positioning With Individualized Positive End-Expiratory Pressure in Acute Respiratory Distress Syndrome Using Electrical Impedance Tomography. Front Physiol 2022; 13:906302. [PMID: 35845997 PMCID: PMC9282375 DOI: 10.3389/fphys.2022.906302] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/13/2022] [Indexed: 12/01/2022] Open
Abstract
Background: Positive end-expiratory pressure (PEEP) optimization during prone positioning remains under debate in acute respiratory distress syndrome (ARDS). This study aimed to investigate the effect of prone position on the optimal PEEP guided by electrical impedance tomography (EIT). Methods: We conducted a retrospective analysis on nineteen ARDS patients in a single intensive care unit. All patients underwent PEEP titration guided by EIT in both supine and prone positions. EIT-derived parameters, including center of ventilation (CoV), regional ventilation delay (RVD), percentage of overdistension (OD) and collapse (CL) were calculated. Optimal PEEP was defined as the PEEP level with minimal sum of OD and CL. Patients were divided into two groups: 1) Lower Optimal PEEPPP (LOP), where optimal PEEP was lower in the prone than in the supine position, and 2) Not-Lower Optimal PEEPPP (NLOP), where optimal PEEP was not lower in the prone compared with the supine position. Results: Eleven patients were classified as LOP (9 [8-9] vs. 12 [10-15] cmH2O; PEEP in prone vs. supine). In the NLOP group, optimal PEEP increased after prone positioning in four patients and remained unchanged in the other four patients. Patients in the LOP group had a significantly higher body mass index (26 [25-28] vs. 22 [17-25] kg/m2; p = 0.009) and lower ICU mortality (0/11 vs. 4/8; p = 0.018) compared with the NLOP group. Besides, PaO2/FiO2 increased significantly during prone positioning in the LOP group (238 [170-291] vs. 186 [141-195] mmHg; p = 0.042). CoV and RVD were also significantly improved during prone positioning in LOP group. No such effects were found in the NLOP group. Conclusion: Broad variability in optimal PEEP between supine and prone position was observed in the studied ARDS patients. Not all patients showed decreased optimal PEEP during prone positioning. Patients with higher body mass index exhibited lower optimal PEEP in prone position, better oxygenation and ventilation homogeneity.
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Affiliation(s)
- Liangyu Mi
- State Key Laboratory of Complex Severe and Rare Disease, Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Yi Chi
- State Key Laboratory of Complex Severe and Rare Disease, Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Siyi Yuan
- State Key Laboratory of Complex Severe and Rare Disease, Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Huaiwu He
- State Key Laboratory of Complex Severe and Rare Disease, Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
- *Correspondence: Huaiwu He, ; Yun Long,
| | - Yun Long
- State Key Laboratory of Complex Severe and Rare Disease, Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
- *Correspondence: Huaiwu He, ; Yun Long,
| | - Inéz Frerichs
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center of Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - Zhanqi Zhao
- Department of Biomedical Engineering, Fourth Military Medical University, Xi’an, China
- Institute of Technical Medicine, Furtwangen University, VS-Schwenningen, Germany
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13
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Montoya C, Steinhorn R, Berger J, Haroyan H, Said M, Perez GF. Authors' Response: CT Scan Using a Dynamic PEEP Protocol to Assess Optimal PEEP Level in Infants with Bronchopulmonary Dysplasia: A Few Unresolved Issues. Lung 2022; 200:279-281. [PMID: 35366080 DOI: 10.1007/s00408-022-00529-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 03/20/2022] [Indexed: 10/18/2022]
Affiliation(s)
- Cassie Montoya
- Division of Neonatology, Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Feinberg School of Medicine, Northwestern University Chicago, Chicago, IL, USA
| | - Robin Steinhorn
- Division of Neonatology, Children's National Medical Center, George Washington University, Washington, DC, USA
| | - John Berger
- Division of Cardiology, Children's National Medical Center, George Washington University, Washington, DC, USA
| | - Harutyun Haroyan
- Division of Radiology, Children's National Medical Center, George Washington University, Washington, DC, USA
| | - Mariam Said
- Division of Neonatology, Children's National Medical Center, George Washington University, Washington, DC, USA
| | - Geovanny F Perez
- Division of Pulmonary and Sleep Medicine, Oishei Children's Hospital, Jacobs School of Medicine and Biomedical Sciences, 1001 Main Street, Buffalo, NY, 14203, USA.
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14
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CT Scan Using a Dynamic PEEP Protocol to Assess Optimal PEEP Level in Infants with Bronchopulmonary Dysplasia: A Few Unresolved Issues. Lung 2022; 200:277-278. [PMID: 35274170 DOI: 10.1007/s00408-022-00526-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 03/06/2022] [Indexed: 10/18/2022]
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15
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Yarahmadi S, Ebrahimzadeh F, Mohamadipour F. Novel Clinical Trial Design for the Study of the Effect of Prone Position on Clinical Outcomes of COVID-19 Patients. TANAFFOS 2022; 21:111-112. [PMID: 36879743 PMCID: PMC9985123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Affiliation(s)
- Sajad Yarahmadi
- Social Determinants of Health Research Center, School of Nursing and Midwifery, Lorestan University of Medical Sciences, Khorramabad, Iran.,Student Research Committee, Semnan University of Medical Sciences, Semnan, Iran
| | - Farzad Ebrahimzadeh
- Nutritional Health Research Center, School of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Fatemeh Mohamadipour
- Social Determinants of Health Research Center, School of Nursing and Midwifery, Lorestan University of Medical Sciences, Khorramabad, Iran
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16
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Cheng JC, Chen HC, Jerng JS, Kuo PH, Wu HD. End-Expiratory Lung Volumes During Spontaneous Breathing Trials in Tracheostomized Subjects on Prolonged Mechanical Ventilation. Respir Care 2021; 66:1704-1712. [PMID: 34465570 PMCID: PMC9993541 DOI: 10.4187/respcare.08957] [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: 11/05/2022]
Abstract
BACKGROUND The role of end-expiratory lung volume (EELV) during a spontaneous breathing trial (SBT) in patients who were tracheostomized and on prolonged mechanical ventilation is unclear. This study aimed to assess EELV during a 60-min SBT and its correlation with weaning success. METHODS Enrolled subjects admitted to a weaning unit were measured for EELV and relevant parameters before and after the SBT. RESULTS Of the 44 enrolled subjects, 29 (66%) were successfully liberated, defined as not needing mechanical ventilation for 5 d. The success group had fewer subjects with chronic kidney disease (41% vs 73%, P = .044), stronger mean ± SD maximum inspiratory pressure (41.6 ± 10.4 vs 34.1 ± 7.1 cm H2O; P = .02) and mean ± SD maximum expiratory pressure (46.9 ± 11.7 vs 35.3 ± 16.9 cm H2O; P = .01) versus the failure group. Toward the end of the SBT, the success group had a significant increase in the mean ± SD EELV (before vs after: 1,278 ± 744 vs 1,493 ± 867 mL; P = .040) and a decrease in the mean ± SD rapid shallow breathing index (83.8 ± 39.4 vs 66.3 ± 29.4; P = .02), whereas there were no significant changes in these 2 parameters in the failure group. The Cox regression analysis showed that, at the beginning of SBT, a greater difference between EELV with a PEEP of 0 cm H2O and with a PEEP of 5 cm H2O was significantly correlated to a higher likelihood of weaning success. Toward the end of the SBT, a greater EELV level at a PEEP of 0 cm H2O was also correlated with weaning success. Also, the greater difference of EELV at a PEEP of 0 cm H2O between the beginning and the end of the SBT was also correlated with a shorter duration to weaning success. CONCLUSIONS The change in EELV during a 60-min SBT may be of prognostic value for liberation from prolonged mechanical ventilation in patients who had a tracheostomy. Our findings suggest a model to understand the underlying mechanism of failure of liberation from mechanical ventilation in these patients.
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Affiliation(s)
- Jui-Chen Cheng
- Division of Respiratory Therapy, Department of Integrated Diagnostics and Therapeutics, National Taiwan University Hospital, Taipei, Taiwan
| | - Hui-Chuan Chen
- Division of Respiratory Therapy, Department of Integrated Diagnostics and Therapeutics, National Taiwan University Hospital, Taipei, Taiwan
| | - Jih-Shuin Jerng
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
| | - Ping-Hung Kuo
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Huey-Dong Wu
- Division of Respiratory Therapy, Department of Integrated Diagnostics and Therapeutics, National Taiwan University Hospital, Taipei, Taiwan
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17
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Rauseo M, Mirabella L, Laforgia D, Lamanna A, Vetuschi P, Soriano E, Ugliola D, Casiello E, Tullo L, Cinnella G. A Pilot Study on Electrical Impedance Tomography During CPAP Trial in Patients With Severe Acute Respiratory Syndrome Coronavirus 2 Pneumonia: The Bright Side of Non-invasive Ventilation. Front Physiol 2021; 12:728243. [PMID: 34566690 PMCID: PMC8458834 DOI: 10.3389/fphys.2021.728243] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 08/17/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Different severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pneumonia phenotypes were described that match with different lung compliance and level of oxygenation, thus requiring a personalized ventilator setting. The burden of so many patients and the lack of intensive care unit (ICU) beds often force physicians to choose non-invasive ventilation (NIV) as the first approach, even if no consent has still been reached to discriminate whether it is safer to choose straightforward intubation, paralysis, and protective ventilation. Under such conditions, electrical impedance tomography (EIT), a non-invasive bedside tool to monitor lung ventilation and perfusion defects, could be useful to assess the response of patients to NIV and choose rapidly the right ventilatory strategy. Objective: The rationale behind this study is that derecruitment is a more efficient measure of positive end expiratory pressure (PEEP)-dependency of patients than recruitment. We hypothesized that patients who derecruit significantly when PEEP is reduced are the ones that do not need early intubation while small end-expiratory lung volume (ΔEELV) variations after a single step of PEEP de-escalation could be predictive of NIV failure. Materials and Methods: Consecutive patients admitted to ICU with confirmed SARS-CoV-2 pneumonia ventilated in NIV were enrolled. Exclusion criteria were former intubation or NIV lasting > 72 h. A trial of continuos positive airway pressure (CPAP) 12 was applied in every patient for at least 15 min, followed by the second period of CPAP 6, either in the supine or prone position. Besides standard monitoring, ventilation of patients was assessed by EIT, and end-expiratory lung impedance (ΔEELI) (%) was calculated as the difference in EELI between CPAP12 and CPAP6. Tidal volume (Vt), Ve, respiratory rate (RR), and FiO2 were recorded, and ABGs were measured. Data were analyzed offline using the dedicated software. The decision to intubate or continue NIV was in charge of treating physicians, independently from study results. Outcomes of patients in terms of intubation rate and ICU mortality were recorded. Results: We enrolled 10 male patients, with a mean age of 67 years. Six patients (60%) were successfully treated by NIV until ICU discharge (Group S), and four patients failed NIV and were intubated and switched to MV (Group F). All these patients died in ICU. During the supine CPAP decremental trial, all patients experienced an increase in RR and Ve. ΔEELI was < 40% in Group F and > 50% in Group S. In the prone trial, ΔEELI was > 50% in all patients, while RR decreased in Group S and remained unchanged in Group F. Conclusion: ΔEELI < 40% after a single PEEP de-escalation step in supine position seems to be a good predictor of poor recruitment and CPAP failure.
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Affiliation(s)
- Michela Rauseo
- Department of Anesthesia and Intensive Care, University of Foggia, Foggia, Italy
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18
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Katira BH, Osada K, Engelberts D, Bastia L, Damiani LF, Li X, Chan H, Yoshida T, Amato MBP, Ferguson ND, Post M, Kavanagh BP, Brochard LJ. Positive End-Expiratory Pressure, Pleural Pressure, and Regional Compliance during Pronation: An Experimental Study. Am J Respir Crit Care Med 2021; 203:1266-1274. [PMID: 33406012 DOI: 10.1164/rccm.202007-2957oc] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Rationale: The physiological basis of lung protection and the impact of positive end-expiratory pressure (PEEP) during pronation in acute respiratory distress syndrome are not fully elucidated. Objectives: To compare pleural pressure (Ppl) gradient, ventilation distribution, and regional compliance between dependent and nondependent lungs, and investigate the effect of PEEP during supination and pronation. Methods: We used a two-hit model of lung injury (saline lavage and high-volume ventilation) in 14 mechanically ventilated pigs and studied supine and prone positions. Global and regional lung mechanics including Ppl and distribution of ventilation (electrical impedance tomography) were analyzed across PEEP steps from 20 to 3 cm H2O. Two pigs underwent computed tomography scans: tidal recruitment and hyperinflation were calculated. Measurements and Main Results: Pronation improved oxygenation, increased Ppl, thus decreasing transpulmonary pressure for any PEEP, and reduced the dorsal-ventral pleural pressure gradient at PEEP < 10 cm H2O. The distribution of ventilation was homogenized between dependent and nondependent while prone and was less dependent on the PEEP level than while supine. The highest regional compliance was achieved at different PEEP levels in dependent and nondependent regions in supine position (15 and 8 cm H2O), but for similar values in prone position (13 and 12 cm H2O). Tidal recruitment was more evenly distributed (dependent and nondependent), hyperinflation lower, and lungs cephalocaudally longer in the prone position. Conclusions: In this lung injury model, pronation reduces the vertical pleural pressure gradient and homogenizes regional ventilation and compliance between the dependent and nondependent regions. Homogenization is much less dependent on the PEEP level in prone than in supine positon.
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Affiliation(s)
- Bhushan H Katira
- Translational Medicine Program, Hospital for Sick Children, Toronto, Ontario, Canada.,Interdepartmental Division of Critical Care Medicine.,The Institute of Medical Science.,Department of Physiology.,The Division of Pediatric Critical Care Medicine, Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
| | - Kohei Osada
- Translational Medicine Program, Hospital for Sick Children, Toronto, Ontario, Canada.,Interdepartmental Division of Critical Care Medicine
| | - Doreen Engelberts
- Translational Medicine Program, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Luca Bastia
- Translational Medicine Program, Hospital for Sick Children, Toronto, Ontario, Canada.,Interdepartmental Division of Critical Care Medicine.,School of Medicine and Surgery, University of Milan-Bicocca, Monza, Italy
| | - L Felipe Damiani
- Translational Medicine Program, Hospital for Sick Children, Toronto, Ontario, Canada.,Interdepartmental Division of Critical Care Medicine.,Departamento Ciencias de la Salud, Carrera de Kinesiología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Xuehan Li
- Translational Medicine Program, Hospital for Sick Children, Toronto, Ontario, Canada.,Interdepartmental Division of Critical Care Medicine.,Department of Anesthesiology and.,Laboratory of Anesthesia and Intensive Care Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Han Chan
- Translational Medicine Program, Hospital for Sick Children, Toronto, Ontario, Canada.,Interdepartmental Division of Critical Care Medicine.,Surgical Intensive Care Unit, Fujian Provincial Hospital, Fuzhou, China
| | - Takeshi Yoshida
- Translational Medicine Program, Hospital for Sick Children, Toronto, Ontario, Canada.,Interdepartmental Division of Critical Care Medicine.,The Department of Anesthesiology and Intensive Care Medicine, Osaka University Graduate School of Medicine, Suita, Japan
| | - Marcelo B P Amato
- Laboratório de Pneumologia LIM-09, Disciplina de Pneumologia, Instituto do Coração (Incor) Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Niall D Ferguson
- Interdepartmental Division of Critical Care Medicine.,Department of Physiology.,Department of Medicine.,Department of Physiology.,Institute for Health Policy, Management, and Evaluation.,Division of Respirology, Department of Medicine, University Health Network and Sinai Health System, Toronto, Ontario, Canada
| | - Martin Post
- Translational Medicine Program, Hospital for Sick Children, Toronto, Ontario, Canada.,The Institute of Medical Science.,Department of Physiology
| | - Brian P Kavanagh
- Translational Medicine Program, Hospital for Sick Children, Toronto, Ontario, Canada.,Interdepartmental Division of Critical Care Medicine.,The Institute of Medical Science.,Department of Physiology.,Department of Critical Care Medicine, Hospital for Sick Children, and.,Toronto General Hospital Research Institute, Toronto, Ontario, Canada; and
| | - Laurent J Brochard
- Interdepartmental Division of Critical Care Medicine.,Department of Anesthesia, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
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19
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Berg RMG, Hartmann JP, Iepsen UW, Christensen RH, Ronit A, Andreasen AS, Bailey DM, Mortensen J, Moseley PL, Plovsing RR. Therapeutic benefits of proning to improve pulmonary gas exchange in severe respiratory failure: focus on fundamentals of physiology. Exp Physiol 2021; 107:759-770. [PMID: 34242438 PMCID: PMC9290689 DOI: 10.1113/ep089405] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 07/06/2021] [Indexed: 12/27/2022]
Abstract
New Findings What is the topic of this review? The use of proning for improving pulmonary gas exchange in critically ill patients. What advances does it highlight? Proning places the lung in its ‘natural’ posture, and thus optimises the ventilation‐perfusion distribution, which enables lung protective ventilation and the alleviation of potentially life‐threatening hypoxaemia in COVID‐19 and other types of critical illness with respiratory failure.
Abstract The survival benefit of proning patients with acute respiratory distress syndrome (ARDS) is well established and has recently been found to improve pulmonary gas exchange in patients with COVID‐19‐associated ARDS (CARDS). This review outlines the physiological implications of transitioning from supine to prone on alveolar ventilation‐perfusion (V˙A--Q˙) relationships during spontaneous breathing and during general anaesthesia in the healthy state, as well as during invasive mechanical ventilation in patients with ARDS and CARDS. Spontaneously breathing, awake healthy individuals maintain a small vertical (ventral‐to‐dorsal) V˙A/Q˙ ratio gradient in the supine position, which is largely neutralised in the prone position, mainly through redistribution of perfusion. In anaesthetised and mechanically ventilated healthy individuals, a vertical V˙A/Q˙ ratio gradient is present in both postures, but with better V˙A--Q˙ matching in the prone position. In ARDS and CARDS, the vertical V˙A/Q˙ ratio gradient in the supine position becomes larger, with intrapulmonary shunting in gravitationally dependent lung regions due to compression atelectasis of the dorsal lung. This is counteracted by proning, mainly through a more homogeneous distribution of ventilation combined with a largely unaffected high perfusion dorsally, and a consequent substantial improvement in arterial oxygenation. The data regarding proning as a therapy in patients with CARDS is still limited and whether the associated improvement in arterial oxygenation translates to a survival benefit remains unknown. Proning is nonetheless an attractive and lung protective manoeuvre with the potential benefit of improving life‐threatening hypoxaemia in patients with ARDS and CARDS.
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Affiliation(s)
- Ronan M G Berg
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Clinical Physiology, Nuclear Medicine & PET, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.,Centre for Physical Activity Research, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.,Neurovascular Research Laboratory, Faculty of Life Sciences and Education, University of South Wales, Pontypridd, UK
| | - Jacob Peter Hartmann
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Centre for Physical Activity Research, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.,Department of Emergency Medicine, North Zealand Hospital, Hillerød, Denmark
| | - Ulrik Winning Iepsen
- Centre for Physical Activity Research, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.,Department of Anaesthesia and Intensive Care, Copenhagen University Hospital - Hvidovre Hospital, Hvidovre, Denmark
| | | | - Andreas Ronit
- Department of Infectious Diseases, Copenhagen University Hospital - Hvidovre Hospital, Hvidovre, Denmark
| | - Anne Sofie Andreasen
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital - Herlev Hospital, Herlev, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Damian M Bailey
- Neurovascular Research Laboratory, Faculty of Life Sciences and Education, University of South Wales, Pontypridd, UK
| | - Jann Mortensen
- Department of Clinical Physiology, Nuclear Medicine & PET, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Pope L Moseley
- Novo Nordisk Foundation Centre for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ronni R Plovsing
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital - Hvidovre Hospital, Hvidovre, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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20
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Perier F, Tuffet S, Maraffi T, Alcala G, Victor M, Haudebourg AF, Razazi K, De Prost N, Amato M, Carteaux G, Mekontso Dessap A. Electrical impedance tomography to titrate positive end-expiratory pressure in COVID-19 acute respiratory distress syndrome. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2020; 24:678. [PMID: 33287864 PMCID: PMC7719729 DOI: 10.1186/s13054-020-03414-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 11/26/2020] [Indexed: 12/17/2022]
Abstract
Rationale Patients with coronavirus disease-19-related acute respiratory distress syndrome (C-ARDS) could have a specific physiological phenotype as compared with those affected by ARDS from other causes (NC-ARDS). Objectives To describe the effect of positive end-expiratory pressure (PEEP) on respiratory mechanics in C-ARDS patients in supine and prone position, and as compared to NC-ARDS. The primary endpoint was the best PEEP defined as the smallest sum of hyperdistension and collapse. Methods Seventeen patients with moderate-to-severe C-ARDS were monitored by electrical impedance tomography (EIT) and evaluated during PEEP titration in supine (n = 17) and prone (n = 14) position and compared with 13 NC-ARDS patients investigated by EIT in our department before the COVID-19 pandemic. Results As compared with NC-ARDS, C-ARDS exhibited a higher median best PEEP (defined using EIT as the smallest sum of hyperdistension and collapse, 12 [9, 12] vs. 9 [6, 9] cmH2O, p < 0.01), more collapse at low PEEP, and less hyperdistension at high PEEP. The median value of the best PEEP was similar in C-ARDS in supine and prone position: 12 [9, 12] vs. 12 [10, 15] cmH2O, p = 0.59. The response to PEEP was also similar in C-ARDS patients with higher vs. lower respiratory system compliance. Conclusion An intermediate PEEP level seems appropriate in half of our C-ARDS patients. There is no solid evidence that compliance at low PEEP could predict the response to PEEP.
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Affiliation(s)
- François Perier
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Service de Médecine Intensive Réanimation, 51, Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France. .,Université Paris Est-Créteil, Faculté de Santé, Groupe de Recherche Clinique CARMAS, 94010, Créteil, France.
| | - Samuel Tuffet
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Service de Médecine Intensive Réanimation, 51, Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Université Paris Est-Créteil, Faculté de Santé, Groupe de Recherche Clinique CARMAS, 94010, Créteil, France
| | - Tommaso Maraffi
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Service de Médecine Intensive Réanimation, 51, Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Service de Médecine Intensive Réanimation, Centre Hospitalier Intercommunal de Créteil, 94010, Créteil, France
| | - Glasiele Alcala
- Pulmonary Division, Cardio-Pulmonary Department, Heart Institute, University of São Paulo, São Paulo, Brazil
| | - Marcus Victor
- Pulmonary Division, Cardio-Pulmonary Department, Heart Institute, University of São Paulo, São Paulo, Brazil
| | - Anne-Fleur Haudebourg
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Service de Médecine Intensive Réanimation, 51, Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Université Paris Est-Créteil, Faculté de Santé, Groupe de Recherche Clinique CARMAS, 94010, Créteil, France
| | - Keyvan Razazi
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Service de Médecine Intensive Réanimation, 51, Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Université Paris Est-Créteil, Faculté de Santé, Groupe de Recherche Clinique CARMAS, 94010, Créteil, France
| | - Nicolas De Prost
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Service de Médecine Intensive Réanimation, 51, Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Université Paris Est-Créteil, Faculté de Santé, Groupe de Recherche Clinique CARMAS, 94010, Créteil, France
| | - Marcelo Amato
- Pulmonary Division, Cardio-Pulmonary Department, Heart Institute, University of São Paulo, São Paulo, Brazil
| | - Guillaume Carteaux
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Service de Médecine Intensive Réanimation, 51, Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Université Paris Est-Créteil, Faculté de Santé, Groupe de Recherche Clinique CARMAS, 94010, Créteil, France
| | - Armand Mekontso Dessap
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Henri Mondor, Service de Médecine Intensive Réanimation, 51, Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Université Paris Est-Créteil, Faculté de Santé, Groupe de Recherche Clinique CARMAS, 94010, Créteil, France
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21
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Turbil E, Terzi N, Cour M, Argaud L, Einav S, Guérin C. Positive end-expiratory pressure-induced recruited lung volume measured by volume-pressure curves in acute respiratory distress syndrome: a physiologic systematic review and meta-analysis. Intensive Care Med 2020; 46:2212-2225. [PMID: 32915255 PMCID: PMC7484614 DOI: 10.1007/s00134-020-06226-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 08/20/2020] [Indexed: 12/26/2022]
Abstract
PURPOSE Recruitment of lung volume is often cited as the reason for using positive end-expiratory pressure (PEEP) in acute respiratory distress syndrome (ARDS) patients. We performed a systematic review on PEEP-induced recruited lung volume measured from inspiratory volume-pressure (VP) curves in ARDS patients to assess the prevalence of patients with PEEP-induced recruited lung volume and the mortality in recruiters and non-recruiters. METHODS We conducted a systematic search of PubMed to identify studies including ARDS patients in which the intervention of an increase in PEEP was accompanied by measurement of the recruited volume (Vrec increase versus no increase) using the VP curve in order to assess the relation between Vrec and mortality at ICU discharge. We first analysed the pooled data from the papers identified and then analysed individual patient level data received from the authors via personal contact. The risk of bias of the included papers was assessed using the quality in prognosis studies tool and the certainty of the evidence regarding the relationship of mortality to Vrec by the GRADE approach. Recruiters were defined as patients with a Vrec > 150 ml. A random effects model was used for the pooled data. Multivariable logistic regression analysis was used for individual patient data. RESULTS We identified 16 papers with a total of 308 patients for the pooled data meta-analysis and 14 papers with a total of 384 patients for the individual data analysis. The quality of the articles was moderate. In the pooled data, the prevalence of recruiters was 74% and the mortality was not significantly different between recruiters and non-recruiters (relative risk 1.20 [95% confidence intervals 0.88-1.63]). The certainty of the evidence regarding this association was very low and publication bias evident. In the individual data, the prevalence of recruiters was 70%. In the multivariable logistic regression, Vrec was not associated with mortality but Simplified Acute Physiology Score II and driving pressure at PEEP of 5 cmH2O were. CONCLUSION After a PEEP increment, most patients are recruiters. Vrec was not associated with ICU mortality. The presence of similar findings in the individual patient level analysis and the driving pressure at PEEP of 5 cmH2O was associated with mortality as previously reported validate our findings. Publication bias and the lack of prospective studies suggest more research is required.
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Affiliation(s)
- Emanuele Turbil
- Department of Anesthesia and Critical Care, University of Sassari, Sassari, Italy
| | - Nicolas Terzi
- Médecine Intensive-Réanimation, CHU Grenoble-Alpes, Grenoble, France.,University of Grenoble-Alpes, Grenoble, France
| | - Martin Cour
- Médecine Intensive-Réanimation, Groupement Hospitalier Centre, Hôpital Edouard Herriot, 5 Place d'Arsonval, 69003, Lyon, France.,Université de Lyon, Faculté de Médecine Lyon-Est, Lyon, France
| | - Laurent Argaud
- Médecine Intensive-Réanimation, Groupement Hospitalier Centre, Hôpital Edouard Herriot, 5 Place d'Arsonval, 69003, Lyon, France.,Université de Lyon, Faculté de Médecine Lyon-Est, Lyon, France
| | | | - Claude Guérin
- Médecine Intensive-Réanimation, Groupement Hospitalier Centre, Hôpital Edouard Herriot, 5 Place d'Arsonval, 69003, Lyon, France. .,Université de Lyon, Faculté de Médecine Lyon-Est, Lyon, France. .,Institut Mondor de Recherches Biomédicales, INSERM 955, CNRS ERL 7000, Créteil, France.
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22
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Webb JB, Bray A, Clipp RB. Parameterization of Respiratory Physiology and Pathophysiology for Real-Time Simulation. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2020; 2020:2274-2278. [PMID: 33018461 DOI: 10.1109/embc44109.2020.9176364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We have refactored the Pulse Physiology Engine respiratory software with enhanced parameterization for improved simulation functionality and results. Realistic patient variability can be applied using discretized lumped-parameters that define lung volumes, compliances, and resistances. A new sigmoid compliance waveform helps meet validation of compartment pressures, flows, volumes, and substance values. Further parameterization and enhanced logic for the application of pathophysiology allows for more accurate modeling of both restrictive and obstructive diseases for mild, moderate, and severe cases.Clinical Relevance- This free and open model provides a well-validated respiratory system for integration with medical simulations and research. It improves the Pulse modeling software and allows for new, low-cost training and in silico testing use-cases. Applications include virtual/augmented environments, manikin-based simulations, and clinical explorations.
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23
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Mosier JM, Sakles JC, Law JA, Brown CA, Brindley PG. Tracheal Intubation in the Critically Ill. Where We Came from and Where We Should Go. Am J Respir Crit Care Med 2020; 201:775-788. [DOI: 10.1164/rccm.201908-1636ci] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Jarrod M. Mosier
- Department of Emergency Medicine and
- Division of Pulmonary, Allergy, Critical Care, and Sleep, Department of Medicine, University of Arizona, Tucson, Arizona
| | | | - J. Adam Law
- Department of Anesthesiology and Department of Emergency Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Calvin A. Brown
- Department of Emergency Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts; and
| | - Peter G. Brindley
- Department of Critical Care Medicine, University of Alberta, Edmonton, Alberta, Canada
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24
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Franchineau G, Bréchot N, Hekimian G, Lebreton G, Bourcier S, Demondion P, Le Guennec L, Nieszkowska A, Luyt CE, Combes A, Schmidt M. Prone positioning monitored by electrical impedance tomography in patients with severe acute respiratory distress syndrome on veno-venous ECMO. Ann Intensive Care 2020; 10:12. [PMID: 32016593 PMCID: PMC6997307 DOI: 10.1186/s13613-020-0633-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 01/24/2020] [Indexed: 12/25/2022] Open
Abstract
Background Prone positioning (PP) during veno-venous ECMO is feasible, but its physiological effects have never been thoroughly evaluated. Our objectives were to describe, through electrical impedance tomography (EIT), the impact of PP on global and regional ventilation, and optimal PEEP level. Methods A monocentric study conducted on ECMO-supported severe ARDS patients, ventilated in pressure-controlled mode, with 14-cmH2O driving pressure and EIT-based “optimal PEEP”. Before, during and after a 16-h PP session, EIT-based distribution and variation of tidal impedance, VTdorsal/VTglobal ratio, end-expiratory lung impedance (EELI) and static compliance were collected. Subgroup analyses were performed in patients who increased their static compliance by ≥ 3 mL/cmH2O after 16 h of PP. Results For all patients (n = 21), tidal volume and EELI were redistributed from ventral to dorsal regions during PP. EIT-based optimal PEEP was significantly lower in PP than in supine position. Median (IQR) optimal PEEP decreased from 14 (12–16) to 10 (8–14) cmH2O. Thirteen (62%) patients increased their static compliance by ≥ 3 mL/cmH2O after PP on ECMO. This subgroup had higher body mass index, more frequent viral pneumonia, shorter ECMO duration, and lower baseline VTdorsal/VTglobal ratio than patients with compliance ≤ 3 mL/cmH2O (P < 0.01). Conclusion Although baseline tidal volume distribution on EIT may predict static compliance improvement after PP on ECMO, our results support physiological benefits of PP in all ECMO patients, by modifying lung mechanics and potentially reducing VILI. Further studies, including a randomized–controlled trial, are now warranted to confirm potential PP benefits during ECMO.
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Affiliation(s)
- Guillaume Franchineau
- INSERM, UMRS_1166-iCAN, Institute of Cardiometabolism and Nutrition, Sorbonne Universités, UPMC Univ Paris 06, 75651, Paris Cedex 13, France.,Medical Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, 75651, Paris Cedex 13, France
| | - Nicolas Bréchot
- INSERM, UMRS_1166-iCAN, Institute of Cardiometabolism and Nutrition, Sorbonne Universités, UPMC Univ Paris 06, 75651, Paris Cedex 13, France.,Medical Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, 75651, Paris Cedex 13, France
| | - Guillaume Hekimian
- INSERM, UMRS_1166-iCAN, Institute of Cardiometabolism and Nutrition, Sorbonne Universités, UPMC Univ Paris 06, 75651, Paris Cedex 13, France.,Medical Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, 75651, Paris Cedex 13, France
| | - Guillaume Lebreton
- INSERM, UMRS_1166-iCAN, Institute of Cardiometabolism and Nutrition, Sorbonne Universités, UPMC Univ Paris 06, 75651, Paris Cedex 13, France.,Cardiac Surgery Department, Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, 75651, Paris Cedex 13, France
| | - Simon Bourcier
- INSERM, UMRS_1166-iCAN, Institute of Cardiometabolism and Nutrition, Sorbonne Universités, UPMC Univ Paris 06, 75651, Paris Cedex 13, France.,Medical Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, 75651, Paris Cedex 13, France
| | - Pierre Demondion
- INSERM, UMRS_1166-iCAN, Institute of Cardiometabolism and Nutrition, Sorbonne Universités, UPMC Univ Paris 06, 75651, Paris Cedex 13, France.,Cardiac Surgery Department, Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, 75651, Paris Cedex 13, France
| | - Loïc Le Guennec
- INSERM, UMRS_1166-iCAN, Institute of Cardiometabolism and Nutrition, Sorbonne Universités, UPMC Univ Paris 06, 75651, Paris Cedex 13, France.,Medical Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, 75651, Paris Cedex 13, France
| | - Ania Nieszkowska
- INSERM, UMRS_1166-iCAN, Institute of Cardiometabolism and Nutrition, Sorbonne Universités, UPMC Univ Paris 06, 75651, Paris Cedex 13, France.,Medical Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, 75651, Paris Cedex 13, France
| | - Charles-Edouard Luyt
- INSERM, UMRS_1166-iCAN, Institute of Cardiometabolism and Nutrition, Sorbonne Universités, UPMC Univ Paris 06, 75651, Paris Cedex 13, France.,Medical Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, 75651, Paris Cedex 13, France
| | - Alain Combes
- INSERM, UMRS_1166-iCAN, Institute of Cardiometabolism and Nutrition, Sorbonne Universités, UPMC Univ Paris 06, 75651, Paris Cedex 13, France.,Medical Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, 75651, Paris Cedex 13, France
| | - Matthieu Schmidt
- INSERM, UMRS_1166-iCAN, Institute of Cardiometabolism and Nutrition, Sorbonne Universités, UPMC Univ Paris 06, 75651, Paris Cedex 13, France. .,Medical Intensive Care Unit, Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, 75651, Paris Cedex 13, France.
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25
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Mezidi M, Parrilla FJ, Yonis H, Riad Z, Böhm SH, Waldmann AD, Richard JC, Lissonde F, Tapponnier R, Baboi L, Mancebo J, Guérin C. Effects of positive end-expiratory pressure strategy in supine and prone position on lung and chest wall mechanics in acute respiratory distress syndrome. Ann Intensive Care 2018; 8:86. [PMID: 30203117 PMCID: PMC6134472 DOI: 10.1186/s13613-018-0434-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 09/01/2018] [Indexed: 02/05/2023] Open
Abstract
Background In acute respiratory distress syndrome (ARDS) patients, it has recently been proposed to set positive end-expiratory pressure (PEEP) by targeting end-expiratory transpulmonary pressure. This approach, which relies on the measurement of absolute esophageal pressure (Pes), has been used in supine position (SP) and has not been investigated in prone position (PP). Our purposes were to assess Pes-guided strategy to set PEEP in SP and in PP as compared with a PEEP/FIO2 table and to explore the early (1 h) and late (16 h) effects of PP on lung and chest wall mechanics. Results We performed a prospective, physiologic study in two ICUs in university hospitals on ARDS patients with PaO2/FIO2 < 150 mmHg. End-expiratory Pes (Pes,ee) was measured in static (zero flow) condition. Patients received PEEP set according to a PEEP/FIO2 table then according to the Pes-guided strategy targeting a positive (3 ± 2 cmH2O) static end-expiratory transpulmonary pressure in SP. Then, patients were turned to PP and received same amount of PEEP from PEEP/FIO2 table then Pes-guided strategy. Respiratory mechanics, oxygenation and end-expiratory lung volume (EELV) were measured after 1 h of each PEEP in each position. For the rest of the 16-h PP session, patients were randomly allocated to either PEEP strategy with measurements done at the end. Thirty-eight ARDS patients (27 male), mean ± SD age 63 ± 13 years, were included. There were 33 primary ARDS and 26 moderate ARDS. PaO2/FIO2 ratio was 120 ± 23 mmHg. At same PEEP/FIO2 table-related PEEP, Pes,ee averaged 9 ± 4 cmH2O in both SP and PP (P = 0.88). With PEEP/FIO2 table and Pes-guided strategy, PEEP was 10 ± 2 versus 12 ± 4 cmH2O in SP and 10 ± 2 versus 12 ± 5 cmH2O in PP (PEEP strategy effect P = 0.05, position effect P = 0.96, interaction P = 0.96). With the Pes-guided strategy, chest wall elastance increased regardless of position. Lung elastance and transpulmonary driving pressure decreased in PP, with no effect of PEEP strategy. Both PP and Pes-guided strategy improved oxygenation without interaction. EELV did not change with PEEP strategy. At the end of PP session, respiratory mechanics did not vary but EELV and PaO2/FIO2 increased while PaCO2 decreased. Conclusions There was no impact of PP on Pes measurements. PP had an immediate improvement effect on lung mechanics and a late lung recruitment effect independent of PEEP strategy. Electronic supplementary material The online version of this article (10.1186/s13613-018-0434-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mehdi Mezidi
- Service de Réanimation Médicale, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France.,Université de Lyon, Lyon, France
| | | | - Hodane Yonis
- Service de Réanimation Médicale, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France
| | - Zakaria Riad
- Service de Réanimation Médicale, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France
| | - Stephan H Böhm
- Department of Anesthesiology and Intensive Care Medicine, Rostock University Medical Center, Schillingallee 35, 18057, Rostock, Germany
| | - Andreas D Waldmann
- Swisstom AG, Lanquart, Switzerland.,Department of Pneumology and Critical Care Medicine, Cologne-Merheim Hospital, Kliniken der Stadt Koln gGmbH, Witten/Herdecke University Hospital, Ostmerheimer Strasse 200, 51109, Cologne, Germany
| | - Jean-Christophe Richard
- Service de Réanimation Médicale, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France.,Université de Lyon, Lyon, France
| | - Floriane Lissonde
- Service de Réanimation Médicale, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France
| | - Romain Tapponnier
- Service de Réanimation Médicale, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France
| | - Loredana Baboi
- Service de Réanimation Médicale, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France
| | - Jordi Mancebo
- Intensive Care Unit, Sant Pau Hospital, Barcelona, Spain
| | - Claude Guérin
- Service de Réanimation Médicale, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France. .,Université de Lyon, Lyon, France. .,INSERM 955, Créteil, France.
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26
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Zhong QH, Duan J, Zhang CY, Feng YL, Qi ZY, He XY, Liang K. [Effect of prone positioning on respiratory function in very preterm infants undergoing mechanical ventilation]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2018; 20:608-612. [PMID: 30111467 PMCID: PMC7389764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/04/2018] [Indexed: 08/01/2024]
Abstract
OBJECTIVE To explore the effect of prone positioning on respiratory function in very preterm infants undergoing mechanical ventilation. METHODS A total of 83 very preterm infants treated with mechanical ventilation were enrolled in the study and were randomly assigned to supine group and prone group. Four infants withdrew from the study and 79 infants completed treatment and observation (37 in the supine group and 42 in the prone group). Infants in both groups were mechanically ventilated in a volume assist-control mode. Infants in the prone group were ventilated in the supine position for 4 hours and in the prone position for 2 hours. Ventilator parameters, arterial blood gas analysis, and vital signs were recorded before grouping, every 6 hours in the supine group, and every hour after conversion into the prone position in the prone group, respectively. RESULTS Fraction of inspired oxygen (FiO2), peak inspiratory pressure, mean inspiratory pressure, and duration of ventilation were significantly lower in the prone group than in the supine group (P<0.05); there were no significant differences in tidal volume or positive end-expiratory pressure between the two groups (P>0.05). The prone group had a significantly higher PO2/FiO2 ratio but significantly lower oxygenation index and respiratory rate than the supine group (P<0.05). There were no significant differences in arterial oxygen tension, pH, base excess, heart rate, or mean blood pressure between the two groups (P>0.05). CONCLUSIONS Alternating ventilation between the prone position and supine position can improve oxygenation function, decrease the fraction of inspired oxygen, and shorten the duration of mechanical ventilation in very preterm infants undergoing mechanical ventilation.
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Affiliation(s)
- Qing-Hua Zhong
- NICU, Department of Pediatrics, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China.
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27
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Zhong QH, Duan J, Zhang CY, Feng YL, Qi ZY, He XY, Liang K. [Effect of prone positioning on respiratory function in very preterm infants undergoing mechanical ventilation]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2018; 20:608-612. [PMID: 30111467 PMCID: PMC7389764 DOI: 10.7499/j.issn.1008-8830.2018.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/04/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To explore the effect of prone positioning on respiratory function in very preterm infants undergoing mechanical ventilation. METHODS A total of 83 very preterm infants treated with mechanical ventilation were enrolled in the study and were randomly assigned to supine group and prone group. Four infants withdrew from the study and 79 infants completed treatment and observation (37 in the supine group and 42 in the prone group). Infants in both groups were mechanically ventilated in a volume assist-control mode. Infants in the prone group were ventilated in the supine position for 4 hours and in the prone position for 2 hours. Ventilator parameters, arterial blood gas analysis, and vital signs were recorded before grouping, every 6 hours in the supine group, and every hour after conversion into the prone position in the prone group, respectively. RESULTS Fraction of inspired oxygen (FiO2), peak inspiratory pressure, mean inspiratory pressure, and duration of ventilation were significantly lower in the prone group than in the supine group (P<0.05); there were no significant differences in tidal volume or positive end-expiratory pressure between the two groups (P>0.05). The prone group had a significantly higher PO2/FiO2 ratio but significantly lower oxygenation index and respiratory rate than the supine group (P<0.05). There were no significant differences in arterial oxygen tension, pH, base excess, heart rate, or mean blood pressure between the two groups (P>0.05). CONCLUSIONS Alternating ventilation between the prone position and supine position can improve oxygenation function, decrease the fraction of inspired oxygen, and shorten the duration of mechanical ventilation in very preterm infants undergoing mechanical ventilation.
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Affiliation(s)
- Qing-Hua Zhong
- NICU, Department of Pediatrics, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China.
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