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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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Coxwell Matthewman M, Yanase F, Costa-Pinto R, Jones D, Karalapillai D, Modra L, Radford S, Ukor IF, Warrillow S, Bellomo R. Haemodynamic changes during prone versus supine position in patients with COVID-19 acute respiratory distress syndrome. Aust Crit Care 2024; 37:391-399. [PMID: 37160405 PMCID: PMC10063572 DOI: 10.1016/j.aucc.2023.03.006] [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: 06/13/2022] [Revised: 03/10/2023] [Accepted: 03/25/2023] [Indexed: 04/03/2023] Open
Abstract
BACKGROUND Prone positioning improves oxygenation in patients with acute respiratory distress syndrome (ARDS) secondary to COVID-19. However, its haemodynamic effects are poorly understood. OBJECTIVES The objective of this study was to investigate the acute haemodynamic changes associated with prone position in mechanically ventilated patients with COVID-19 ARDS. The primary objective was to describe changes in cardiac index with prone position. The secondary objectives were to describe changes in mean arterial pressure, FiO2, PaO2/FiO2 ratio, and oxygen delivery (DO2) with prone position. METHODS We performed this cohort-embedded study in an Australian intensive care unit, between September and November 2021. We included adult patients with severe COVID-19 ARDS, requiring mechanical ventilation and prone positioning for respiratory failure. We placed patients in the prone position for 16 h per session. Using pulse contour technology, we collected haemodynamic data every 5 min for 2 h in the supine position and for 2 h in the prone position consecutively. RESULTS We studied 18 patients. Cardiac index, stroke volume index, and mean arterial pressure increased significantly in the prone position compared to supine position. The mean cardiac index was higher in the prone group than in the supine group by 0.44 L/min/m2 (95% confidence interval, 0.24 to 0.63) (P < 0.001). FiO2 requirement decreased significantly in the prone position (P < 0.001), with a significant increase in PaO2/FiO2 ratio (P < 0.001). DO2 also increased significantly in the prone position, from a median DO2 of 597 mls O2/min (interquartile range, 504 to 931) in the supine position to 743 mls O2/min (interquartile range, 604 to 1075) in the prone position (P < 0.001). CONCLUSION Prone position increased the cardiac index, mean arterial pressure, and DO2 in invasively ventilated patients with COVID-19 ARDS. These changes may contribute to improved tissue oxygenation and improved outcomes observed in trials of prone positioning.
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Affiliation(s)
| | - Fumitaka Yanase
- Department of Intensive Care, Austin Hospital, Melbourne, Australia; Australian and New Zealand Intensive Care Research Centre, Monash University School of Public Health and Preventive Medicine, Melbourne, Australia
| | | | - Daryl Jones
- Department of Intensive Care, Austin Hospital, Melbourne, Australia
| | | | - Lucy Modra
- Department of Intensive Care, Austin Hospital, Melbourne, Australia
| | - Sam Radford
- Department of Intensive Care, Austin Hospital, Melbourne, Australia
| | - Ida-Fong Ukor
- Department of Intensive Care, Austin Hospital, Melbourne, Australia
| | | | - Rinaldo Bellomo
- Department of Intensive Care, Austin Hospital, Melbourne, Australia; Australian and New Zealand Intensive Care Research Centre, Monash University School of Public Health and Preventive Medicine, Melbourne, Australia; Department of Critical Care, Department of Medicine and Radiology, University of Melbourne, Melbourne, Australia; Data Analytics Research and Evaluation Centre, Austin Hospital, Melbourne, Australia
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Elmaleh Y, Yavchitz A, Léguillier T, Squara PA, Palpacuer C, Grégoire C. Feasibility of Prone Positioning for Brain-injured Patients with Severe Acute Respiratory Distress Syndrome: A Systematic Review and Pilot Study (ProBrain). Anesthesiology 2024; 140:495-512. [PMID: 38088786 DOI: 10.1097/aln.0000000000004875] [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 Prone position is a key component to treat hypoxemia in patients with severe acute respiratory distress syndrome. However, most studies evaluating it exclude patients with brain injuries without any medical evidence. METHODS This study includes a systematic review to determine whether brain-injured patients were excluded in studies evaluating prone position on acute respiratory distress syndrome; a prospective study including consecutive brain-injured patients needing prone position. The primary endpoint was the evaluation of cerebral blood flow using transcranial Doppler after prone positioning. Secondary outcomes were intracranial pressure, cerebral perfusion pressure, and tissue oxygen pressure. RESULTS From 8,183 citations retrieved, 120 studies were included in the systematic review. Among them, 90 studies excluded brain-injured patients (75%) without any justification, 16 included brain-injured patients (4 randomized, 7 nonrandomized studies, 5 retrospective), and 14 did not retrieve brain-injured data. Eleven patients were included in the authors' pilot study. No reduction of cerebral blood flow surrogates was observed during prone positioning, with diastolic speed values (mean ± SD) ranging from 37.7 ± 16.2 cm/s to 45.2 ± 19.3 cm/s for the right side (P = 0.897) and 39.6 ± 18.2 cm/s to 46.5 ± 21.3 cm/s for the left side (P = 0.569), and pulsatility index ranging from 1.14 ± 0.31 to 1.0 ± 0.32 for the right side (P = 0.145) and 1.14 ± 0.31 to 1.02 ± 0.2 for the left side (P = 0.564) before and during prone position. CONCLUSIONS Brain-injured patients are largely excluded from studies evaluating prone position in acute respiratory distress syndrome. However, cerebral blood flow seems not to be altered considering increasing of mean arterial pressure during the session. Systematic exclusion of brain-injured patients appears to be unfounded, and prone position, while at risk in brain-injured patients, should be evaluated on these patients to review recommendations, considering close monitoring of neurologic and hemodynamic parameters. EDITOR’S PERSPECTIVE
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Affiliation(s)
- Yoann Elmaleh
- Intensive Care Unit, Rothschild Foundation Hospital, Paris, France; Quincy Anesthesiology, Private Hospital Claude Galien, Boussy Saint Antoine, France
| | - Amélie Yavchitz
- Clinical Research Department, Rothschild Foundation Hospital, Paris, France
| | - Teddy Léguillier
- Clinical Research Department, Rothschild Foundation Hospital, Paris, France
| | | | - Clément Palpacuer
- Clinical Research Department, Rothschild Foundation Hospital, Paris, France
| | - Charles Grégoire
- Intensive Care Unit, Rothschild Foundation Hospital, Paris, France
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4
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Rollinson TC, McDonald LA, Rose J, Eastwood G, Costa-Pinto R, Modra L, Maeda A, Bacolas Z, Anstey J, Bates S, Bradley S, Dumbrell J, French C, Ghosh A, Haines K, Haydon T, Hodgson CL, Holmes J, Leggett N, McGain F, Moore C, Nelson K, Presneill J, Rotherham H, Said S, Young M, Zhao P, Udy A, Neto AS, Chaba A, Bellomo R. Neuromuscular blockade and oxygenation changes during prone positioning in COVID-19. J Crit Care 2024; 79:154469. [PMID: 37992464 DOI: 10.1016/j.jcrc.2023.154469] [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] [Received: 09/06/2023] [Revised: 10/25/2023] [Accepted: 11/09/2023] [Indexed: 11/24/2023]
Abstract
PURPOSE Neuromuscular blockers (NMBs) are often used during prone positioning to facilitate mechanical ventilation in COVID-19 related ARDS. However, their impact on oxygenation is uncertain. METHODS Multi-centre observational study of invasively ventilated COVID-19 ARDS adults treated with prone positioning. We collected data on baseline characteristics, prone positioning, NMB use and patient outcome. We assessed arterial blood gas data during supine and prone positioning and after return to the supine position. RESULTS We studied 548 prone episodes in 220 patients (mean age 54 years, 61% male) of whom 164 (75%) received NMBs. Mean PaO2:FiO2 (P/F ratio) during the first prone episode with NMBs reached 208 ± 63 mmHg compared with 161 ± 66 mmHg without NMBs (Δmean = 47 ± 5 mmHg) for an absolute increase from baseline of 76 ± 56 mmHg versus 55 ± 56 mmHg (padj < 0.001). The mean P/F ratio on return to the supine position was 190 ± 63 mmHg in the NMB group versus 141 ± 64 mmHg in the non-NMB group for an absolute increase from baseline of 59 ± 58 mmHg versus 34 ± 56 mmHg (padj < 0.001). CONCLUSION During prone positioning, NMB is associated with increased oxygenation compared to non-NMB therapy, with a sustained effect on return to the supine position. These findings may help guide the use of NMB during prone positioning in COVID-19 ARDS.
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Affiliation(s)
- Thomas C Rollinson
- Department of Intensive Care, Austin Health, Melbourne, VIC, Australia; Department of Physiotherapy, Austin Health, Melbourne, VIC, Australia; Department of Physiotherapy, The University of Melbourne, Melbourne, VIC, Australia; Institute for Breathing and Sleep, Melbourne, VIC, Australia.
| | - Luke A McDonald
- Department of Intensive Care, Austin Health, Melbourne, VIC, Australia; Department of Physiotherapy, Austin Health, Melbourne, VIC, Australia
| | - Joleen Rose
- Department of Intensive Care, Austin Health, Melbourne, VIC, Australia; Department of Physiotherapy, Austin Health, Melbourne, VIC, Australia
| | - Glenn Eastwood
- Department of Intensive Care, Austin Health, Melbourne, VIC, Australia; Data Analytics Research and Evaluation Centre, The University of Melbourne and Austin Hospital, Melbourne, VIC, Australia; Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
| | - Rahul Costa-Pinto
- Department of Intensive Care, Austin Health, Melbourne, VIC, Australia; Department of Critical Care, The University of Melbourne, Melbourne, VIC, Australia
| | - Lucy Modra
- Department of Intensive Care, Austin Health, Melbourne, VIC, Australia; Department of Critical Care, The University of Melbourne, Melbourne, VIC, Australia
| | - Akinori Maeda
- Department of Intensive Care, Austin Health, Melbourne, VIC, Australia
| | - Zoe Bacolas
- Department of Physiotherapy, Austin Health, Melbourne, VIC, Australia
| | - James Anstey
- Department of Intensive Care, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Samantha Bates
- Department of Critical Care, The University of Melbourne, Melbourne, VIC, Australia; Department of Intensive Care, Western Health, VIC, Australia
| | - Scott Bradley
- Department of Intensive Care, Alfred Health, VIC, Australia; Department of Physiotherapy, Alfred Health, VIC, Australia
| | - Jodi Dumbrell
- Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
| | - Craig French
- Department of Critical Care, The University of Melbourne, Melbourne, VIC, Australia; Department of Intensive Care, Western Health, VIC, Australia
| | - Angaj Ghosh
- Department of Intensive Care, Northern Health, VIC, Australia
| | - Kimberley Haines
- Department of Critical Care, The University of Melbourne, Melbourne, VIC, Australia; Department of Intensive Care, Western Health, VIC, Australia; Department of Physiotherapy, Western Health, VIC, Australia
| | - Tim Haydon
- Department of Critical Care Medicine, St Vincent's Hospital, Melbourne, VIC, Australia
| | - Carol L Hodgson
- Department of Critical Care, The University of Melbourne, Melbourne, VIC, Australia; Department of Intensive Care, Alfred Health, VIC, Australia; Department of Physiotherapy, Alfred Health, VIC, Australia; Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
| | - Jennifer Holmes
- Department of Critical Care Medicine, St Vincent's Hospital, Melbourne, VIC, Australia
| | - Nina Leggett
- Department of Critical Care, The University of Melbourne, Melbourne, VIC, Australia; Department of Intensive Care, Western Health, VIC, Australia; Department of Physiotherapy, Western Health, VIC, Australia
| | - Forbes McGain
- Department of Critical Care, The University of Melbourne, Melbourne, VIC, Australia; Department of Intensive Care, Western Health, VIC, Australia
| | - Cara Moore
- Department of Intensive Care, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | | | - Jeffrey Presneill
- Department of Intensive Care, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Hannah Rotherham
- Department of Intensive Care, Royal Melbourne Hospital, Melbourne, VIC, Australia
| | - Simone Said
- Department of Intensive Care, Northern Health, VIC, Australia
| | - Meredith Young
- Department of Intensive Care, Alfred Health, VIC, Australia
| | - Peinan Zhao
- Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
| | - Andrew Udy
- Department of Intensive Care, Alfred Health, VIC, Australia; Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
| | - Ary Serpa Neto
- Department of Intensive Care, Austin Health, Melbourne, VIC, Australia; Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
| | - Anis Chaba
- Department of Intensive Care, Austin Health, Melbourne, VIC, Australia
| | - Rinaldo Bellomo
- Department of Intensive Care, Austin Health, Melbourne, VIC, Australia; Department of Critical Care, The University of Melbourne, Melbourne, VIC, Australia; Department of Intensive Care, Royal Melbourne Hospital, Melbourne, VIC, Australia; Data Analytics Research and Evaluation Centre, The University of Melbourne and Austin Hospital, Melbourne, VIC, Australia; Australian and New Zealand Intensive Care Research Centre, Monash University, Melbourne, VIC, Australia
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Lan L, Ni Y, Zhou Y, Fu L, Wu W, Li P, Yu H, Liang G, Luo F. PEEP-Induced Lung Recruitment Maneuver Combined with Prone Position for ARDS: A Single-Center, Prospective, Randomized Clinical Trial. J Clin Med 2024; 13:853. [PMID: 38337547 PMCID: PMC10856548 DOI: 10.3390/jcm13030853] [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: 12/23/2023] [Revised: 01/28/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
Background: Prone position (PP) and the positive end-expiratory pressure (PEEP)-induced lung recruitment maneuver (LRM) are both efficient in improving oxygenation and prognosis in patients with ARDS. The synergistic effect of PP combined with PEEP-induced LRM in patients with ARDS remains unclear. We aim to explore the effects of PP combined with PEEP-induced LRM on prognosis in patients with moderate to severe ARDS and the predicting role of lung recruitablity. Methods: Patients with moderate to severe ARDS were consecutively enrolled. The patients were prospectively assigned to either the intervention (PP with PEEP-induced LRM) or control groups (PP). The clinical outcomes, respiratory mechanics, and electric impedance tomography (EIT) monitoring results for the two groups were compared. Lung recruitablity (recruitment-to-inflation ratio: R/I) was measured during the PEEP-induced LRM procedure and was used for predicting the response to LRM. Results: Fifty-eight patients were included in the final analysis, among which 28 patients (48.2%) received PEEP-induced LRM combined with PP. PEEP-induced LRM enhanced the effect of PP by a significant improvement in oxygenation (∆PaO2/FiO2 75.8 mmHg vs. 4.75 mmHg, p < 0.001) and the compliance of respiratory system (∆Crs, 2 mL/cmH2O vs. -1 mL/cmH2O, p = 0.02) among ARDS patients. Based on the EIT measurement, PP combined with PEEP-induced LRM increased the ventilation distribution mainly in the dorsal region (5.0% vs. 2.0%, p = 0.015). The R/I ratio was measured in 28 subjects. The higher R/I ratio was related to greater oxygenation improvement after LRM (Pearson's r = 0.4; p = 0.034). Conclusions: In patients with moderate to severe ARDS, PEEP-induced LRM combined with PP can improve oxygenation and dorsal ventilation distribution. R/I can be useful to predict responses to LRM.
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Affiliation(s)
- Lan Lan
- Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610064, China; (L.L.); (Y.N.); (Y.Z.); (L.F.); (W.W.); (P.L.); (H.Y.); (G.L.)
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Sichuan University, Chengdu 610064, China
| | - Yuenan Ni
- Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610064, China; (L.L.); (Y.N.); (Y.Z.); (L.F.); (W.W.); (P.L.); (H.Y.); (G.L.)
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Sichuan University, Chengdu 610064, China
| | - Yubei Zhou
- Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610064, China; (L.L.); (Y.N.); (Y.Z.); (L.F.); (W.W.); (P.L.); (H.Y.); (G.L.)
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Sichuan University, Chengdu 610064, China
| | - Linxi Fu
- Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610064, China; (L.L.); (Y.N.); (Y.Z.); (L.F.); (W.W.); (P.L.); (H.Y.); (G.L.)
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Sichuan University, Chengdu 610064, China
| | - Wentao Wu
- Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610064, China; (L.L.); (Y.N.); (Y.Z.); (L.F.); (W.W.); (P.L.); (H.Y.); (G.L.)
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Sichuan University, Chengdu 610064, China
| | - Ping Li
- Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610064, China; (L.L.); (Y.N.); (Y.Z.); (L.F.); (W.W.); (P.L.); (H.Y.); (G.L.)
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Sichuan University, Chengdu 610064, China
| | - He Yu
- Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610064, China; (L.L.); (Y.N.); (Y.Z.); (L.F.); (W.W.); (P.L.); (H.Y.); (G.L.)
| | - Guopeng Liang
- Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610064, China; (L.L.); (Y.N.); (Y.Z.); (L.F.); (W.W.); (P.L.); (H.Y.); (G.L.)
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Sichuan University, Chengdu 610064, China
| | - Fengming Luo
- Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu 610064, China; (L.L.); (Y.N.); (Y.Z.); (L.F.); (W.W.); (P.L.); (H.Y.); (G.L.)
- State Key Laboratory of Respiratory Health and Multimorbidity, West China Hospital, Sichuan University, Chengdu 610064, China
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Karavidas N, Paraskeva I, Zakynthinos GE, Tsolaki V. Enterocutaneous Fistula in a COVID-19 Obese Patient During Prolonged Prone Position for Severe Acute Respiratory Distress Syndrome. Cureus 2023; 15:e47212. [PMID: 38021961 PMCID: PMC10653124 DOI: 10.7759/cureus.47212] [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] [Accepted: 10/15/2023] [Indexed: 12/01/2023] Open
Abstract
Prone position (PP) has been widely used in patients under mechanical ventilation for COVID-19 acute respiratory distress syndrome (ARDS), usually for many hours per day. Complications are not rare, although most of them are mild. To our knowledge, we report the first case of enterocutaneous fistula after prolonged use of PP in the literature. Morbid obesity; yielding increased abdominal wall pressure when the patient was prone; pre-existing intestinal hernias; and increased vasopressor doses for septic shock due to secondary infections resulted in necrosis of the small intestine, the abdominal wall, and the skin leading to enterocutaneous fistula. Clinicians managing patients with COVID-19 should keep in mind this complication, especially when proning obese patients with a history of intestinal surgery, as the presence of intestinal hernias might be missed during a clinical examination.
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Affiliation(s)
- Nikitas Karavidas
- Critical Care Medicine, University Hospital of Larissa, Larissa, GRC
| | | | | | - Vasiliki Tsolaki
- Critical Care Medicine, University Hospital of Larissa, Larissa, GRC
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7
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Nay MA, Hindre R, Perrin C, Clément J, Plantier L, Sève A, Druelle S, Morrier M, Lainé JB, Colombain L, Corvaisier G, Bizien N, Pouget-Abadie X, Bigot A, Jamard S, Nyamankolly E, Planquette B, Fossat G, Boulain T. Prone position versus usual care in hypoxemic COVID-19 patients in medical wards: a randomised controlled trial. Crit Care 2023; 27:240. [PMID: 37330512 PMCID: PMC10276908 DOI: 10.1186/s13054-023-04529-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 06/11/2023] [Indexed: 06/19/2023] Open
Abstract
BACKGROUND Benefit of early awake prone positioning for COVID-19 patients hospitalised in medical wards and who need oxygen therapy remains to be demonstrated. The question was considered at the time of COVID-19 pandemic to avoid overloading the intensive care units. We aimed to determine whether prone position plus usual care could reduce the rate of non-invasive ventilation (NIV) or intubation or death as compared to usual care alone. METHODS In this multicentre randomised clinical trial, 268 patients were randomly assigned to awake prone position plus usual care (N = 135) or usual care alone (N = 132). The primary outcome was the proportion of patients who underwent NIV or intubation or died within 28 days. Main secondary outcomes included the rates of NIV, of intubation or death, within 28 days. RESULTS Median time spent each day in the prone position within 72 h of randomisation was 90 min (IQR 30-133). The proportion of NIV or intubation or death within 28 days was 14.1% (19/135) in the prone position group and 12.9% (17/132) in the usual care group [odds ratio adjusted for stratification (aOR) 0.43; 95% confidence interval (CI) 0.14-1.35]. The probability of intubation, or intubation or death (secondary outcomes) was lower in the prone position group than in the usual care group (aOR 0.11; 95% CI 0.01-0.89 and aOR 0.09; 95% CI 0.01-0.76, respectively) in the whole study population and in the prespecified subgroup of patients with SpO2 ≥ 95% on inclusion (aOR 0.11; 95% CI 0.01-0.90, and aOR 0.09; 95% CI 0.03-0.27, respectively). CONCLUSIONS Awake prone position plus usual care in COVID-19 patients in medical wards did not decrease the composite outcome of need for NIV or intubation or death. Trial registration ClinicalTrials.gov Identifier: NCT04363463 . Registered 27 April 2020.
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Affiliation(s)
- Mai-Anh Nay
- Medical Intensive Care Unit, Centre Hospitalier Régional d'Orléans, 14, Avenue de l'hôpital, 45067, Orléans Cedex 2, France.
| | - Raphaël Hindre
- Department of Respiratory Medicine, Hôpital Européen Georges-Pompidou, Paris, France
- Innovative Therapies in Hemostasis, INSERM UMR S 1140, Biosurgical Research Lab (Carpentier Foundation), Université de Paris, Paris, France
| | - Christophe Perrin
- Department of Pneumology and Pneumo-Covid Unit, Centre Hospitalier Princesse Grace, Monaco, Monaco
| | - Jérémy Clément
- Department of Internal Medicine and General Medicine, Centre Hospitalier Simone Veil, Blois, France
| | - Laurent Plantier
- Department of Pneumology and Respiratory Functional Testing, Bretonneau Hospital, CHRU de Tours, CEPR/INSERM UMR1100, University of Tours, Tours, France
| | - Aymeric Sève
- Department of Infectious and Tropical Diseases, Centre Hospitalier Régional d'Orléans, Orléans, France
| | - Sylvie Druelle
- Department of Pneumology, Centre Hospitalier Régional d'Orléans, Orléans, France
| | - Marine Morrier
- Department of Infectious Diseases, Centre Hospitalier Departmental de la Vendée, La Roche Sur Yon, France
| | - Jean-Baptiste Lainé
- Department of Infectious and Tropical Diseases, Le Mans Hospital, Le Mans, France
| | - Léa Colombain
- Department of Infectious and Tropical Diseases, Perpignan Hospital Centre, Perpignan, France
| | - Grégory Corvaisier
- Department of Internal Medicine, Centre Hospitalier Bretagne Atlantique, Vannes, France
| | - Nicolas Bizien
- Department of Pneumology, Centre Hospitalier Intercommunal de Cornouaille, Quimper, France
| | - Xavier Pouget-Abadie
- Department of Internal Medicine and Infectious Diseases, Groupement Hospitalier la Rochelle Ré Aunis, La Rochelle, France
| | - Adrien Bigot
- Department of Internal Medicine, Bretonneau Hospital, Tours, France
| | - Simon Jamard
- Department of Infectious Diseases, Bretonneau Hospital, University of Tours, Tours, France
| | - Elsa Nyamankolly
- Department of Internal Medicine and Infectious Diseases, Hospital Dax Côte D'argent, Dax, France
| | - Benjamin Planquette
- Department of Respiratory Medicine, Hôpital Européen Georges-Pompidou, Paris, France
- Innovative Therapies in Hemostasis, INSERM UMR S 1140, Biosurgical Research Lab (Carpentier Foundation), Université de Paris, Paris, France
| | - Guillaume Fossat
- Medical Intensive Care Unit, Centre Hospitalier Régional d'Orléans, 14, Avenue de l'hôpital, 45067, Orléans Cedex 2, France
| | - Thierry Boulain
- Medical Intensive Care Unit, Centre Hospitalier Régional d'Orléans, 14, Avenue de l'hôpital, 45067, Orléans Cedex 2, France
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Dhelft F, Lancelot S, Mouton W, Le Bars D, Costes N, Roux E, Orkisz M, Benzerdjeb N, Richard JC, Bitker L. Prone position decreases acute lung inflammation measured by [ 11C](R)-PK11195 positron emission tomography in experimental acute respiratory distress syndrome. J Appl Physiol (1985) 2023; 134:467-481. [PMID: 36633865 DOI: 10.1152/japplphysiol.00234.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Whether prone positioning (PP) modulates acute lung inflammation by the modulation of biomechanical forces of ventilator-induced lung injuries (VILIs) remains unclear. We aimed to demonstrate that PP decreases acute lung inflammation in animals with experimental acute respiratory distress syndrome (ARDS). Animals were under general anesthesia and protective ventilation (tidal volume 6 mL·kg-1, PEEP 5 cmH2O). ARDS was induced by intratracheal instillation of chlorohydric acid. Animals were then randomized to PP, or to supine position (SP). After 4 h, a positron emission tomography (PET) acquisition with [11C](R)-PK11195 was performed coupled with computerized tomography (CT) acquisitions, allowing the CT quantification of VILI-associated parameters. [11C](R)-PK11195 lung uptake was quantified using pharmacokinetic multicompartment models. Analyses were performed on eight lung sections distributed along the antero-posterior dimension. Six animals were randomized to PP, five to SP (median [Formula: see text]/[Formula: see text] [interquartile range]: 164 [102-269] mmHg). The normally aerated compartment was significantly redistributed to the posterior lung regions of animals in PP, compared with SP. Dynamic strain was significantly increased in posterior regions of SP animals, compared with PP. After 4 h, animals in PP had a significantly lower uptake of [11C](R)-PK11195, compared with SP. [11C](R)-PK11195 regional uptake was independently associated with the study group, dynamic strain, tidal hyperinflation, and regional respiratory system compliance in multivariate analysis. In an experimental model of ARDS, 4 h of PP significantly decreased acute lung inflammation assessed with PET. The beneficial impact of PP on acute lung inflammation was consecutive to the combination of decreased biomechanical forces and changes in the respiratory system mechanics.NEW & NOTEWORTHY Prone position decreases acute lung macrophage inflammation quantified in vivo with [11C](R)-PK11195 positron emission tomography in an experimental acute respiratory distress syndrome. Regional macrophage inflammation is maximal in the most anterior and posterior lung section of supine animals, in relation with increased regional tidal strain and hyperinflation, and reduced regional lung compliance.
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Affiliation(s)
- François Dhelft
- Service de Médecine Intensive - Réanimation, Hôpital de la Croix Rousse, Hospices Civils de Lyon, Lyon, France.,Univ Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, CNRS, Inserm, CREATIS UMR 5220, U1294, Villeurbanne, France.,Claude Bernard University Lyon 1, Lyon, France
| | - Sophie Lancelot
- Claude Bernard University Lyon 1, Lyon, France.,CERMEP - Imagerie du Vivant, Lyon, France.,Hospices Civils de Lyon, Lyon, France
| | - William Mouton
- Laboratoire Commun de Recherche Hospices Civils de Lyon/bioMérieux, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Lyon, France
| | - Didier Le Bars
- Claude Bernard University Lyon 1, Lyon, France.,CERMEP - Imagerie du Vivant, Lyon, France.,Hospices Civils de Lyon, Lyon, France
| | - Nicolas Costes
- Claude Bernard University Lyon 1, Lyon, France.,CERMEP - Imagerie du Vivant, Lyon, France
| | - Emmanuel Roux
- Univ Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, CNRS, Inserm, CREATIS UMR 5220, U1294, Villeurbanne, France
| | - Maciej Orkisz
- Univ Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, CNRS, Inserm, CREATIS UMR 5220, U1294, Villeurbanne, France
| | - Nazim Benzerdjeb
- Centre d'Anatomie et Cytologie Pathologique, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Lyon, France
| | - Jean-Christophe Richard
- Service de Médecine Intensive - Réanimation, Hôpital de la Croix Rousse, Hospices Civils de Lyon, Lyon, France.,Univ Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, CNRS, Inserm, CREATIS UMR 5220, U1294, Villeurbanne, France.,Claude Bernard University Lyon 1, Lyon, France
| | - Laurent Bitker
- Service de Médecine Intensive - Réanimation, Hôpital de la Croix Rousse, Hospices Civils de Lyon, Lyon, France.,Univ Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, CNRS, Inserm, CREATIS UMR 5220, U1294, Villeurbanne, France.,Claude Bernard University Lyon 1, Lyon, France
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9
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Walter T, Zucman N, Mullaert J, Thiry I, Gernez C, Roux D, Ricard JD. Extended prone positioning duration for COVID-19-related ARDS: benefits and detriments. Crit Care 2022; 26:208. [PMID: 35804453 PMCID: PMC9263064 DOI: 10.1186/s13054-022-04081-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 06/27/2022] [Indexed: 11/17/2022] Open
Abstract
Background During the COVID-19 pandemic, many more patients were turned prone than before, resulting in a considerable increase in workload. Whether extending duration of prone position may be beneficial has received little attention. We report here benefits and detriments of a strategy of extended prone positioning duration for COVID-19-related acute respiratory distress syndrome (ARDS). Methods A eetrospective, monocentric, study was performed on intensive care unit patients with COVID-19-related ARDS who required tracheal intubation and who have been treated with at least one session of prone position of duration greater or equal to 24 h. When prone positioning sessions were initiated, patients were kept prone for a period that covered two nights. Data regarding the incidence of pressure injury and ventilation parameters were collected retrospectively on medical and nurse files of charts. The primary outcome was the occurrence of pressure injury of stage ≥ II during the ICU stay. Results For the 81 patients included, the median duration of prone positioning sessions was 39 h [interquartile range (IQR) 34–42]. The cumulated incidence of stage ≥ II pressure injuries was 26% [95% CI 17–37] and 2.5% [95% CI 0.3–8.8] for stages III/IV pressure injuries. Patients were submitted to a median of 2 sessions [IQR 1–4] and for 213 (94%) prone positioning sessions, patients were turned over to supine position during daytime, i.e., between 9 AM and 6 PM. This increased duration was associated with additional increase in oxygenation after 16 h with the PaO2/FiO2 ratio increasing from 150 mmHg [IQR 121–196] at H+ 16 to 162 mmHg [IQR 124–221] before being turned back to supine (p = 0.017). Conclusion In patients with extended duration of prone position up to 39 h, cumulative incidence for stage ≥ II pressure injuries was 26%, with 25%, 2.5%, and 0% for stage II, III, and IV, respectively. Oxygenation continued to increase significantly beyond the standard 16-h duration. Our results may have significant impact on intensive care unit staffing and patients’ respiratory conditions. Trial registration: Institutional review board 00006477 of HUPNVS, Université Paris Cité, APHP, with the reference: CER-2021-102, obtained on October 11th 2021. Registered at Clinicaltrials (NCT05124197). Supplementary Information The online version contains supplementary material available at 10.1186/s13054-022-04081-2.
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10
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Huai J, Ye X. Impact of prone positioning duration on the outcome of patients receiving venovenous extracorporeal membrane oxygenation for acute respiratory distress syndrome: A meta-analysis. Heliyon 2022; 8:e12320. [PMID: 36568680 PMCID: PMC9764689 DOI: 10.1016/j.heliyon.2022.e12320] [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: 08/30/2022] [Revised: 11/13/2022] [Accepted: 12/06/2022] [Indexed: 12/24/2022] Open
Abstract
Purpose Research has shown that prone positioning (PP) improves the survival of patients receiving venovenous extracorporeal membrane oxygenation (V-V ECMO) for acute respiratory distress syndrome (ARDS). However, the reported impact of PP duration on the outcome of V-V ECMO patients with ARDS varies across studies. Methods A meta-analysis approach was used to identify studies that investigated the impact of PP duration on the outcome of ARDS patients who were treated with V-V ECMO; the following databases were used: MEDLINE, Embase, Wanfang, and the China National Knowledge Infrastructure. The primary outcome was cumulative survival. Secondary outcomes were length of stay in an intensive care unit, exchange of arterial blood gases, and adverse events. Results A total of 8 studies were included in the final meta-analysis. Patients with longer duration of PP (≥12 h) had a longer survival period (risk ratio: 1.24; 95% confidence interval: 1.00, 1.54]) than those with PP < 12 h. There was no evidence of publication bias across the studies. Conclusion Our results imply that a longer duration of PP ≥ 12 h might improve the outcome of patients with ARDS who receive V-V ECMO therapy.
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Affiliation(s)
- Jiaping Huai
- Department of Critical Care Medicine, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, Zhejiang, 321000, China
| | - Xiaohua Ye
- Department of Gastroenterology, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, Zhejiang, 321000, China
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11
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Piciucchi S, Garo ML, Tomassetti S, Ravaglia C, Poletti V. Supine vs prone position in mild to moderate COVID-19 pneumonia: The impact of proning on computed tomography findings. Eur J Intern Med 2022; 104:118-119. [PMID: 35738975 PMCID: PMC9212665 DOI: 10.1016/j.ejim.2022.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 05/18/2022] [Accepted: 06/15/2022] [Indexed: 11/28/2022]
Affiliation(s)
- S Piciucchi
- Department of Radiology, G.B. Morgagni Hospital/University of Bologna, Forlì, Italy.
| | - M L Garo
- Independent Research, Mathsly, Italy
| | - S Tomassetti
- Department of Experimental and Clinical Medicine Careggi University Hospital Florence, Italy
| | - C Ravaglia
- Pulmonology Unit, G.B. Morgagni Hospital/University of Bologna, Forlì
| | - V Poletti
- Pulmonology Unit, G.B. Morgagni Hospital/University of Bologna, Forlì; Dipartimento di Medicina Specialistica e Sperimentale (DIMES), University of Bologna, Forlì Campus, Italy; Department of Respiratory Diseases and Allergy, Aarhus University Hospital, Aarhus, Denmark
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12
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COVID-19-Related ARDS: Key Mechanistic Features and Treatments. J Clin Med 2022; 11:jcm11164896. [PMID: 36013135 PMCID: PMC9410336 DOI: 10.3390/jcm11164896] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 12/15/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a heterogeneous syndrome historically characterized by the presence of severe hypoxemia, high-permeability pulmonary edema manifesting as diffuse alveolar infiltrate on chest radiograph, and reduced compliance of the integrated respiratory system as a result of widespread compressive atelectasis and fluid-filled alveoli. Coronavirus disease 19 (COVID-19)-associated ARDS (C-ARDS) is a novel etiology caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that may present with distinct clinical features as a result of the viral pathobiology unique to SARS-CoV-2. In particular, severe injury to the pulmonary vascular endothelium, accompanied by the presence of diffuse microthrombi in the pulmonary microcirculation, can lead to a clinical presentation in which the severity of impaired gas exchange becomes uncoupled from lung capacity and respiratory mechanics. The purpose of this review is to highlight the key mechanistic features of C-ARDS and to discuss the implications these features have on its treatment. In some patients with C-ARDS, rigid adherence to guidelines derived from clinical trials in the pre-COVID era may not be appropriate.
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13
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Chen Z, Li M, Gu S, Huang X, Xia J, Ye Q, Zheng J, Zhan Q, Wang C. Effect of prone position in patients with acute respiratory distress syndrome supported by venovenous extracorporeal membrane oxygenation: a retrospective cohort study. BMC Pulm Med 2022; 22:234. [PMID: 35710365 PMCID: PMC9202669 DOI: 10.1186/s12890-022-02026-7] [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: 04/27/2022] [Accepted: 06/10/2022] [Indexed: 11/10/2022] Open
Abstract
Background The application of prone position (PP) in acute respiratory distress syndrome (ARDS) supported by venovenous extracorporeal membrane oxygenation (VV-ECMO) is controversial.
Objectives To evaluate the safety and efficacy of application of PP during VV-ECMO in patients with ARDS.
Methods This was a single-center, retrospective study of patients who met the Berlin definition of ARDS, and were supported with VV-ECMO. We divided the patients into two groups. The prone group included patients who were supported by VV-ECMO, and experienced at least one period of PP, while those without PP during VV-ECMO were defined as the supine group. Propensity score matching (PSM) at a ratio of 1:1 was introduced to minimize potential confounders. The primary outcomes were the complications of PP and the change of arterial oxygen pressure/fraction of the inspiration (PaO2/FiO2) ratio after PP. The secondary outcomes were hospital survival, ICU survival, and ECMO weaning rate. Results From April 2013 to October 2020, a total of 91 patients met the diagnostic criteria of ARDS who were supported with ECMO. 38 patients (41.8%) received at least one period of PP during ECMO, while 53 patients (58.2%) were maintained in supine position during ECMO. 22 minor complications were reported in the prone group and major complications were not found. The other ECMO-related complications were similar between two groups. The PaO2/FiO2 ratio significantly improved after PP compared with before (174.50 (132.40–228.25) mmHg vs. 158.00 (122.93–210.33) mmHg, p < 0.001). PSM selected 25 pairs of patients with similar characteristics. Hospital survival or ICU survival did not differ between the two groups (40% vs. 28%, p = 0.370; 40% vs. 32%, p = 0.556). Significant difference of ECMO weaning rate between two groups was not found (56% vs. 32%, p = 0.087). Conclusions PP during VV-ECMO was safe and could improve oxygenation. A large-scale and well-designed RCT is needed in the future. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-022-02026-7.
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Affiliation(s)
- Ziying Chen
- Peking University China-Japan Friendship School of Clinical Medicine, No. 2 Yinghua East Road, Chaoyang District, Beijing, 100029, People's Republic of China.,Center for Respiratory Diseases, China-Japan Friendship Hospital, Beijing, People's Republic of China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, People's Republic of China.,National Clinical Research Center for Respiratory Diseases, Beijing, People's Republic of China
| | - Min Li
- Center for Respiratory Diseases, China-Japan Friendship Hospital, Beijing, People's Republic of China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, People's Republic of China.,National Clinical Research Center for Respiratory Diseases, Beijing, People's Republic of China
| | - Sichao Gu
- Center for Respiratory Diseases, China-Japan Friendship Hospital, Beijing, People's Republic of China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, People's Republic of China.,National Clinical Research Center for Respiratory Diseases, Beijing, People's Republic of China
| | - Xu Huang
- Center for Respiratory Diseases, China-Japan Friendship Hospital, Beijing, People's Republic of China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, People's Republic of China.,National Clinical Research Center for Respiratory Diseases, Beijing, People's Republic of China
| | - Jingen Xia
- Center for Respiratory Diseases, China-Japan Friendship Hospital, Beijing, People's Republic of China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, People's Republic of China.,National Clinical Research Center for Respiratory Diseases, Beijing, People's Republic of China
| | - Qinghua Ye
- Peking University China-Japan Friendship School of Clinical Medicine, No. 2 Yinghua East Road, Chaoyang District, Beijing, 100029, People's Republic of China.,Center for Respiratory Diseases, China-Japan Friendship Hospital, Beijing, People's Republic of China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, People's Republic of China.,National Clinical Research Center for Respiratory Diseases, Beijing, People's Republic of China
| | - Jiangnan Zheng
- Department of Pulmonary and Critical Care Medicine, Suzhou Ninth Hospital Affiliated to Soochow University, Suzhou, People's Republic of China
| | - Qingyuan Zhan
- Peking University China-Japan Friendship School of Clinical Medicine, No. 2 Yinghua East Road, Chaoyang District, Beijing, 100029, People's Republic of China. .,Center for Respiratory Diseases, China-Japan Friendship Hospital, Beijing, People's Republic of China. .,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, People's Republic of China. .,National Clinical Research Center for Respiratory Diseases, Beijing, People's Republic of China.
| | - Chen Wang
- Peking University China-Japan Friendship School of Clinical Medicine, No. 2 Yinghua East Road, Chaoyang District, Beijing, 100029, People's Republic of China.,Center for Respiratory Diseases, China-Japan Friendship Hospital, Beijing, People's Republic of China.,Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, People's Republic of China.,National Clinical Research Center for Respiratory Diseases, Beijing, People's Republic of China.,Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
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14
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Mentzelopoulos SD, Adamos G. Key Advances in Intensive Care and the Coronavirus Disease-19 Research and Practice Boost. J Clin Med 2022; 11:jcm11123370. [PMID: 35743440 PMCID: PMC9224744 DOI: 10.3390/jcm11123370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 06/09/2022] [Indexed: 12/15/2022] Open
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15
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Rezoagli E, Laffey JG, Bellani G. Monitoring Lung Injury Severity and Ventilation Intensity during Mechanical Ventilation. Semin Respir Crit Care Med 2022; 43:346-368. [PMID: 35896391 DOI: 10.1055/s-0042-1748917] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Acute respiratory distress syndrome (ARDS) is a severe form of respiratory failure burden by high hospital mortality. No specific pharmacologic treatment is currently available and its ventilatory management is a key strategy to allow reparative and regenerative lung tissue processes. Unfortunately, a poor management of mechanical ventilation can induce ventilation induced lung injury (VILI) caused by physical and biological forces which are at play. Different parameters have been described over the years to assess lung injury severity and facilitate optimization of mechanical ventilation. Indices of lung injury severity include variables related to gas exchange abnormalities, ventilatory setting and respiratory mechanics, ventilation intensity, and the presence of lung hyperinflation versus derecruitment. Recently, specific indexes have been proposed to quantify the stress and the strain released over time using more comprehensive algorithms of calculation such as the mechanical power, and the interaction between driving pressure (DP) and respiratory rate (RR) in the novel DP multiplied by four plus RR [(4 × DP) + RR] index. These new parameters introduce the concept of ventilation intensity as contributing factor of VILI. Ventilation intensity should be taken into account to optimize protective mechanical ventilation strategies, with the aim to reduce intensity to the lowest level required to maintain gas exchange to reduce the potential for VILI. This is further gaining relevance in the current era of phenotyping and enrichment strategies in ARDS.
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Affiliation(s)
- Emanuele Rezoagli
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.,Department of Emergency and Intensive Care, San Gerardo University Hospital, Monza, Italy
| | - John G Laffey
- School of Medicine, National University of Ireland, Galway, Ireland.,Department of Anaesthesia and Intensive Care Medicine, Galway University Hospitals, Saolta University Hospital Group, Galway, Ireland.,Lung Biology Group, Regenerative Medicine Institute (REMEDI) at CÚRAM Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Giacomo Bellani
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.,Department of Emergency and Intensive Care, San Gerardo University Hospital, Monza, Italy
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16
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Guérin C, Cour M, Argaud L. Prone Positioning and Neuromuscular Blocking Agents as Adjunctive Therapies in Mechanically Ventilated Patients with Acute Respiratory Distress Syndrome. Semin Respir Crit Care Med 2022; 43:453-460. [DOI: 10.1055/s-0042-1744304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractNeuromuscular blocking agents (NMBAs) and prone position (PP) are two major adjunctive therapies that can improve outcome in moderate-to-severe acute respiratory distress syndrome. NMBA should be used once lung-protective mechanical ventilation has been set, for 48 hours or less and as a continuous intravenous infusion. PP should be used as early as possible for long sessions; in COVID-19 its use has exploded. In nonintubated patients, PP might reduce the rate of intubation but not mortality. The goal of this article is to perform a narrative review on the pathophysiological rationale, the clinical effects, and the clinical use and recommendations of both NMBA and PP.
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Affiliation(s)
- Claude Guérin
- Médecine Intensive Réanimation, Hôpital Edouard Herriot, Lyon, France
- Faculté de Médecine Lyon-Est, Université de Lyon, Lyon, France
- INSERM 955 CNRS 7200, Institut Mondor de Recherches Biomédicales, Créteil, France
| | - Martin Cour
- Médecine Intensive Réanimation, Hôpital Edouard Herriot, Lyon, France
- Faculté de Médecine Lyon-Est, Université de Lyon, Lyon, France
| | - Laurent Argaud
- Médecine Intensive Réanimation, Hôpital Edouard Herriot, Lyon, France
- Faculté de Médecine Lyon-Est, Université de Lyon, Lyon, France
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17
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Protti A, Santini A, Pennati F, Chiurazzi C, Ferrari M, Iapichino GE, Carenzo L, Dalla Corte F, Lanza E, Martinetti N, Aliverti A, Cecconi M. Lung response to prone positioning in mechanically-ventilated patients with COVID-19. Crit Care 2022; 26:127. [PMID: 35526009 PMCID: PMC9076814 DOI: 10.1186/s13054-022-03996-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 04/23/2022] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Prone positioning improves survival in moderate-to-severe acute respiratory distress syndrome (ARDS) unrelated to the novel coronavirus disease (COVID-19). This benefit is probably mediated by a decrease in alveolar collapse and hyperinflation and a more homogeneous distribution of lung aeration, with fewer harms from mechanical ventilation. In this preliminary physiological study we aimed to verify whether prone positioning causes analogue changes in lung aeration in COVID-19. A positive result would support prone positioning even in this other population. METHODS Fifteen mechanically-ventilated patients with COVID-19 underwent a lung computed tomography in the supine and prone position with a constant positive end-expiratory pressure (PEEP) within three days of endotracheal intubation. Using quantitative analysis, we measured the volume of the non-aerated, poorly-aerated, well-aerated, and over-aerated compartments and the gas-to-tissue ratio of the ten vertical levels of the lung. In addition, we expressed the heterogeneity of lung aeration with the standardized median absolute deviation of the ten vertical gas-to-tissue ratios, with lower values indicating less heterogeneity. RESULTS By the time of the study, PEEP was 12 (10-14) cmH2O and the PaO2:FiO2 107 (84-173) mmHg in the supine position. With prone positioning, the volume of the non-aerated compartment decreased by 82 (26-147) ml, of the poorly-aerated compartment increased by 82 (53-174) ml, of the normally-aerated compartment did not significantly change, and of the over-aerated compartment decreased by 28 (11-186) ml. In eight (53%) patients, the volume of the over-aerated compartment decreased more than the volume of the non-aerated compartment. The gas-to-tissue ratio of the ten vertical levels of the lung decreased by 0.34 (0.25-0.49) ml/g per level in the supine position and by 0.03 (- 0.11 to 0.14) ml/g in the prone position (p < 0.001). The standardized median absolute deviation of the gas-to-tissue ratios of those ten levels decreased in all patients, from 0.55 (0.50-0.71) to 0.20 (0.14-0.27) (p < 0.001). CONCLUSIONS In fifteen patients with COVID-19, prone positioning decreased alveolar collapse, hyperinflation, and homogenized lung aeration. A similar response has been observed in other ARDS, where prone positioning improves outcome. Therefore, our data provide a pathophysiological rationale to support prone positioning even in COVID-19.
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Affiliation(s)
- Alessandro 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.
| | - Alessandro Santini
- Department of Anesthesia and Intensive Care Units, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Francesca Pennati
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy
| | - Chiara Chiurazzi
- Department of Anesthesia and Intensive Care Units, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Michele Ferrari
- Department of Anesthesia and Intensive Care Units, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Giacomo E Iapichino
- Department of Anesthesia and Intensive Care Units, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Luca Carenzo
- Department of Anesthesia and Intensive Care Units, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Francesca Dalla Corte
- Department of Anesthesia and Intensive Care Units, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Ezio Lanza
- Department of Radiology, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Nicolò Martinetti
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
- Department of Anesthesia and Intensive Care Units, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Andrea Aliverti
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy
| | - Maurizio 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
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18
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Karageorgos V, Proklou A, Vaporidi K. Lung and diaphragm protective ventilation: a synthesis of recent data. Expert Rev Respir Med 2022; 16:375-390. [PMID: 35354361 DOI: 10.1080/17476348.2022.2060824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
INTRODUCTION : To adhere to the Hippocratic Oath, to "first, do no harm", we need to make every effort to minimize the adverse effects of mechanical ventilation. Our understanding of the mechanisms of ventilator-induced lung injury (VILI) and ventilator-induced diaphragm dysfunction (VIDD) has increased in recent years. Research focuses now on methods to monitor lung stress and inhomogeneity and targets we should aim for when setting the ventilator. In parallel, efforts to promote early assisted ventilation to prevent VIDD have revealed new challenges, such as titrating inspiratory effort and synchronizing the mechanical with the patients' spontaneous breaths, while at the same time adhering to lung-protective targets. AREAS COVERED This is a narrative review of the key mechanisms contributing to VILI and VIDD and the methods currently available to evaluate and mitigate the risk of lung and diaphragm injury. EXPERT OPINION Implementing lung and diaphragm protective ventilation requires individualizing the ventilator settings, and this can only be accomplished by exploiting in everyday clinical practice the tools available to monitor lung stress and inhomogeneity, inspiratory effort, and patient-ventilator interaction.
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Affiliation(s)
- Vlasios Karageorgos
- Department of Intensive Care, University Hospital of Heraklion and University of Crete Medical School, Greece
| | - Athanasia Proklou
- Department of Intensive Care, University Hospital of Heraklion and University of Crete Medical School, Greece
| | - Katerina Vaporidi
- Department of Intensive Care, University Hospital of Heraklion and University of Crete Medical School, Greece
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Boesing C, Graf PT, Schmitt F, Thiel M, Pelosi P, Rocco PRM, Luecke T, Krebs J. Effects of different positive end-expiratory pressure titration strategies during prone positioning in patients with acute respiratory distress syndrome: a prospective interventional study. Crit Care 2022; 26:82. [PMID: 35346325 PMCID: PMC8962042 DOI: 10.1186/s13054-022-03956-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/19/2022] [Indexed: 01/01/2023] Open
Abstract
Background Prone positioning in combination with the application of low tidal volume and adequate positive end-expiratory pressure (PEEP) improves survival in patients with moderate to severe acute respiratory distress syndrome (ARDS). However, the effects of PEEP on end-expiratory transpulmonary pressure (Ptpexp) during prone positioning require clarification. For this purpose, the effects of three different PEEP titration strategies on Ptpexp, respiratory mechanics, mechanical power, gas exchange, and hemodynamics were evaluated comparing supine and prone positioning. Methods In forty consecutive patients with moderate to severe ARDS protective ventilation with PEEP titrated according to three different titration strategies was evaluated during supine and prone positioning: (A) ARDS Network recommendations (PEEPARDSNetwork), (B) the lowest static elastance of the respiratory system (PEEPEstat,RS), and (C) targeting a positive Ptpexp (PEEPPtpexp). The primary endpoint was to analyze whether Ptpexp differed significantly according to PEEP titration strategy during supine and prone positioning. Results Ptpexp increased progressively with prone positioning compared with supine positioning as well as with PEEPEstat,RS and PEEPPtpexp compared with PEEPARDSNetwork (positioning effect p < 0.001, PEEP strategy effect p < 0.001). PEEP was lower during prone positioning with PEEPEstat,RS and PEEPPtpexp (positioning effect p < 0.001, PEEP strategy effect p < 0.001). During supine positioning, mechanical power increased progressively with PEEPEstat,RS and PEEPPtpexp compared with PEEPARDSNetwork, and prone positioning attenuated this effect (positioning effect p < 0.001, PEEP strategy effect p < 0.001). Prone compared with supine positioning significantly improved oxygenation (positioning effect p < 0.001, PEEP strategy effect p < 0.001) while hemodynamics remained stable in both positions. Conclusions Prone positioning increased transpulmonary pressures while improving oxygenation and hemodynamics in patients with moderate to severe ARDS when PEEP was titrated according to the ARDS Network lower PEEP table. This PEEP titration strategy minimized parameters associated with ventilator-induced lung injury induction, such as transpulmonary driving pressure and mechanical power. We propose that a lower PEEP strategy (PEEPARDSNetwork) in combination with prone positioning may be part of a lung protective ventilation strategy in patients with moderate to severe ARDS. Trial registration German Clinical Trials Register (DRKS00017449). Registered June 27, 2019. https://www.drks.de/drks_web/navigate.do?navigationId=trial.HTML&TRIAL_ID=DRKS00017449 Supplementary Information The online version contains supplementary material available at 10.1186/s13054-022-03956-8.
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20
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Roldán R, Rodriguez S, Barriga F, Tucci M, Victor M, Alcala G, Villamonte R, Suárez-Sipmann F, Amato M, Brochard L, Tusman G. Sequential lateral positioning as a new lung recruitment maneuver: an exploratory study in early mechanically ventilated Covid-19 ARDS patients. Ann Intensive Care 2022; 12:13. [PMID: 35150355 PMCID: PMC8840950 DOI: 10.1186/s13613-022-00988-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 01/21/2022] [Indexed: 12/16/2022] Open
Abstract
Background A sequential change in body position from supine-to-both lateral positions under constant ventilatory settings could be used as a postural recruitment maneuver in case of acute respiratory distress syndrome (ARDS), provided that sufficient positive end-expiratory pressure (PEEP) prevents derecruitment. This study aims to evaluate the feasibility and physiological effects of a sequential postural recruitment maneuver in early mechanically ventilated COVID-19 ARDS patients. Methods A cohort of 15 patients receiving lung-protective mechanical ventilation in volume-controlled with PEEP based on recruitability were prospectively enrolled and evaluated in five sequentially applied positions for 30 min each: Supine-baseline; Lateral-1st side; 2nd Supine; Lateral-2nd side; Supine-final. PEEP level was selected using the recruitment-to-inflation ratio (R/I ratio) based on which patients received PEEP 12 cmH2O for R/I ratio ≤ 0.5 or PEEP 15 cmH2O for R/I ratio > 0.5. At the end of each period, we measured respiratory mechanics, arterial blood gases, lung ultrasound aeration, end-expiratory lung impedance (EELI), and regional distribution of ventilation and perfusion using electric impedance tomography (EIT). Results Comparing supine baseline and final, respiratory compliance (29 ± 9 vs 32 ± 8 mL/cmH2O; p < 0.01) and PaO2/FIO2 ratio (138 ± 36 vs 164 ± 46 mmHg; p < 0.01) increased, while driving pressure (13 ± 2 vs 11 ± 2 cmH2O; p < 0.01) and lung ultrasound consolidation score decreased [5 (4–5) vs 2 (1–4); p < 0.01]. EELI decreased ventrally (218 ± 205 mL; p < 0.01) and increased dorsally (192 ± 475 mL; p = 0.02), while regional compliance increased in both ventral (11.5 ± 0.7 vs 12.9 ± 0.8 mL/cmH2O; p < 0.01) and dorsal regions (17.1 ± 1.8 vs 18.8 ± 1.8 mL/cmH2O; p < 0.01). Dorsal distribution of perfusion increased (64.8 ± 7.3% vs 66.3 ± 7.2%; p = 0.01). Conclusions Without increasing airway pressure, a sequential postural recruitment maneuver improves global and regional respiratory mechanics and gas exchange along with a redistribution of EELI from ventral to dorsal lung areas and less consolidation. Trial registration ClinicalTrials.gov, NCT04475068. Registered 17 July 2020, https://clinicaltrials.gov/ct2/show/NCT04475068 Supplementary Information The online version contains supplementary material available at 10.1186/s13613-022-00988-9.
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Affiliation(s)
- Rollin Roldán
- Laboratorio de Fisiología Experimental, Facultad de Medicina Humana, Universidad de Piura, Lima, Peru.,Intensive Care Unit, Hospital Rebagliati, Lima, Peru.,Laboratório de Pneumologia LIM-09, Disciplina de Pneumologia, Heart Institute (Incor) Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Shalim Rodriguez
- Laboratorio de Fisiología Experimental, Facultad de Medicina Humana, Universidad de Piura, Lima, Peru.,Intensive Care Unit, Hospital Rebagliati, Lima, Peru
| | - Fernando Barriga
- Laboratorio de Fisiología Experimental, Facultad de Medicina Humana, Universidad de Piura, Lima, Peru.,Intensive Care Unit, Hospital Rebagliati, Lima, Peru
| | - Mauro Tucci
- Laboratório de Pneumologia LIM-09, Disciplina de Pneumologia, Heart Institute (Incor) Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Marcus Victor
- Laboratório de Pneumologia LIM-09, Disciplina de Pneumologia, Heart Institute (Incor) Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil.,Electronics Engineering, Aeronautics Institute of Technology, São Paulo, Brazil
| | - Glasiele Alcala
- Laboratório de Pneumologia LIM-09, Disciplina de Pneumologia, Heart Institute (Incor) Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Renán Villamonte
- Laboratorio de Fisiología Experimental, Facultad de Medicina Humana, Universidad de Piura, Lima, Peru.,Intensive Care Unit, Hospital Rebagliati, Lima, Peru
| | - Fernando Suárez-Sipmann
- Intensive Care Unit, Hospital Universitario de La Princesa, Madrid, Spain.,Hedenstierna Laboratory, Surgical Sciences, Uppsala University, Uppsala, Sweden.,CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Marcelo Amato
- Laboratório de Pneumologia LIM-09, Disciplina de Pneumologia, Heart Institute (Incor) Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Laurent Brochard
- Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Unity Health Toronto, 209 Victoria Street, Room 4-08, Toronto, ON, M5B 1T8, Canada. .,Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.
| | - Gerardo Tusman
- Department of Anesthesiology, Hospital Privado de Comunidad, Mar del Plata, Argentina
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Pan A, Peddle M, Auger P, Parfeniuk D, MacDonald RD. Interfacility transport of mechanically ventilated patients with suspected COVID-19 in the prone position. PREHOSP EMERG CARE 2022; 27:287-292. [PMID: 35103581 DOI: 10.1080/10903127.2022.2036882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
ObjectiveProne positioning during mechanical ventilation in patients with severe respiratory failure is an important intervention with both physiologic and empiric rationale for its use. This study describes a consecutive cohort of patients with severe hypoxemic respiratory failure due to COVID-19 who were transported in the prone position in order to determine the incidence of serious adverse events (SAEs) during transport.MethodsThis retrospective study used prospectively collected data from a provincial air and land critical care transport system where specially trained critical care paramedic crews transported intubated and mechanically ventilated patients with COVID-19 in the prone position. SAEs were determined a priori, and included markers of new hemodynamic or respiratory instability, new resuscitative measures, and equipment or vehicle malfunction. Two authors independently reviewed each patient care record to identify SAEs during transport, and the ability of the crews to successfully manage such events.ResultsFrom April 2020 to June 2021, 127 intubated and mechanically ventilated patients were transported in the prone position. Of these, 117 were transported by land vehicle, 7 by rotor-wing, and 3 by fixed wing aircraft. 67 (52.8%) were vasopressor-dependent, 5 (3.9%) were receiving inhaled vasodilators, 9 (7.1%) were hypoxic (SpO2 <88%), and 3 (2.4%) were hypotensive (SBP <90 or MAP <65 mm Hg) when the transport crew made patient contact at the sending hospital. Of the 122 (96.1%) patients in which a pre-transport PaO2/FiO2 ratio was available, the mean (median; range) was 86.7 (81; 47-144), with 27 patients greater having a ratio greater than 100. The mean (median; range) transport time was 49 (45; 14-176) minutes. There were 19 SAEs in 18 (14.2%) patients during transport, the most common of which was new hypoxia requiring ventilator adjustments (15 of 18 patients). All SAEs were successfully managed by the transport crews. No patient experienced tracheal tube obstruction, unintentional extubation, cardiac arrest, or died during transport.ConclusionPatients with severe hypoxemic respiratory failure due to COVID-19 can safely be transported in the prone position by specially trained critical care paramedic crews.
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Affiliation(s)
- Andy Pan
- Ornge Transport Medicine, Mississauga, Ontario, Canada.,Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Department of Emergency Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada.,Division of Critical Care Medicine, Department of Medicine, Montfort Hospital, Ottawa, Ontario Canada
| | - Michael Peddle
- Ornge Transport Medicine, Mississauga, Ontario, Canada.,Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Patrick Auger
- Ornge Transport Medicine, Mississauga, Ontario, Canada.,Algonquin College, Ottawa, Ontario, Canada
| | | | - Russell D MacDonald
- Ornge Transport Medicine, Mississauga, Ontario, Canada.,Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Attending Staff, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
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22
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Esperatti M, Busico M, Fuentes NA, Gallardo A, Osatnik J, Vitali A, Wasinger EG, Olmos M, Quintana J, Saavedra SN, Lagazio AI, Andrada FJ, Kakisu H, Romano NE, Matarrese A, Mogadouro MA, Mast G, Moreno CN, Niquin GDR, Barbaresi V, Bruhn Cruz A, Ferreyro BL, Torres A. Impact of exposure time in awake prone positioning on clinical outcomes of patients with COVID-19-related acute respiratory failure treated with high-flow nasal oxygen: a multicenter cohort study. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2022; 26:16. [PMID: 34996496 PMCID: PMC8740872 DOI: 10.1186/s13054-021-03881-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 12/23/2021] [Indexed: 12/15/2022]
Abstract
Background In patients with COVID-19-related acute respiratory failure (ARF), awake prone positioning (AW-PP) reduces the need for intubation in patients treated with high-flow nasal oxygen (HFNO). However, the effects of different exposure times on clinical outcomes remain unclear. We evaluated the effect of AW-PP on the risk of endotracheal intubation and in-hospital mortality in patients with COVID-19-related ARF treated with HFNO and analyzed the effects of different exposure times to AW-PP. Methods This multicenter prospective cohort study in six ICUs of 6 centers in Argentine consecutively included patients > 18 years of age with confirmed COVID-19-related ARF requiring HFNO from June 2020 to January 2021. In the primary analysis, the main exposure was awake prone positioning for at least 6 h/day, compared to non-prone positioning (NON-PP). In the sensitivity analysis, exposure was based on the number of hours receiving AW-PP. Inverse probability weighting–propensity score (IPW-PS) was used to adjust the conditional probability of treatment assignment. The primary outcome was endotracheal intubation (ETI); and the secondary outcome was hospital mortality. Results During the study period, 580 patients were screened and 335 were included; 187 (56%) tolerated AW-PP for [median (p25–75)] 12 (9–16) h/day and 148 (44%) served as controls. The IPW–propensity analysis showed standardized differences < 0.1 in all the variables assessed. After adjusting for other confounders, the OR (95% CI) for ETI in the AW-PP group was 0.36 (0.2–0.7), with a progressive reduction in OR as the exposure to AW-PP increased. The adjusted OR (95% CI) for hospital mortality in the AW-PP group ≥ 6 h/day was 0.47 (0.19–1.31). The exposure to prone positioning ≥ 8 h/d resulted in a further reduction in OR [0.37 (0.17–0.8)]. Conclusion In the study population, AW-PP for ≥ 6 h/day reduced the risk of endotracheal intubation, and exposure ≥ 8 h/d reduced the risk of hospital mortality. Supplementary Information The online version contains supplementary material available at 10.1186/s13054-021-03881-2.
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Affiliation(s)
- Mariano Esperatti
- Intensive Care Unit, Hospital Privado de Comunidad, Mar del Plata, Argentina.,Escuela Superior de Medicina, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - Marina Busico
- Intensive Care Unit, Clínica Olivos SMG, Av. Maipú 1660, B1602 ABQ, Olivos, Provincia de Buenos Aires, Argentina. .,Sociedad Argentina de Terapia Intensiva, Buenos Aires, Argentina.
| | - Nora Angélica Fuentes
- Intensive Care Unit, Hospital Privado de Comunidad, Mar del Plata, Argentina.,Escuela Superior de Medicina, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - Adrian Gallardo
- Intensive Care Unit, Sanatorio Clínica Modelo de Morón, Morón, Buenos Aires, Argentina.,Universidad de Morón, Morón, Buenos Aires, Argentina
| | - Javier Osatnik
- Intensive Care Unit, Hospital Aleman, Ciudad Autónoma de Buenos Aires, Argentina.,Universidad del Salvador, Buenos Aires, Argentina
| | - Alejandra Vitali
- Intensive Care Unit, Sanatorio de La Trinidad Palermo, Ciudad Autónoma de Buenos Aires, Argentina
| | - Elizabeth Gisele Wasinger
- Intensive Care Unit, Hospital Universitario Austral, Pilar, Buenos Aires, Argentina.,Universidad Austral, Pilar, Buenos Aires, Argentina
| | - Matías Olmos
- Intensive Care Unit, Hospital Privado de Comunidad, Mar del Plata, Argentina
| | - Jorgelina Quintana
- Intensive Care Unit, Clínica Olivos SMG, Av. Maipú 1660, B1602 ABQ, Olivos, Provincia de Buenos Aires, Argentina
| | | | - Ana Inés Lagazio
- Intensive Care Unit, Sanatorio de La Trinidad Palermo, Ciudad Autónoma de Buenos Aires, Argentina
| | - Facundo Juan Andrada
- Intensive Care Unit, Hospital Universitario Austral, Pilar, Buenos Aires, Argentina.,Universidad Austral, Pilar, Buenos Aires, Argentina
| | - Hiromi Kakisu
- Intensive Care Unit, Hospital Privado de Comunidad, Mar del Plata, Argentina
| | - Nahuel Esteban Romano
- Intensive Care Unit, Clínica Olivos SMG, Av. Maipú 1660, B1602 ABQ, Olivos, Provincia de Buenos Aires, Argentina
| | - Agustin Matarrese
- Intensive Care Unit, Hospital Aleman, Ciudad Autónoma de Buenos Aires, Argentina
| | | | - Giuliana Mast
- Intensive Care Unit, Hospital Universitario Austral, Pilar, Buenos Aires, Argentina.,Universidad Austral, Pilar, Buenos Aires, Argentina
| | | | | | - Veronica Barbaresi
- Intensive Care Unit, Hospital Privado de Comunidad, Mar del Plata, Argentina
| | - Alejandro Bruhn Cruz
- Departement of Intensive Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Bruno Leonel Ferreyro
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
| | - Antoni Torres
- Pulmonary Department, Hospital Clinic, Universitat de Barcelona, IDIBAPS, CIBERES, Barcelona, Spain
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Maitra S, Roy A, Behera S, Pande A, Bhattacharjee A, Bhattacharyya A, Baidya D, Anand R, Ray B, Subramaniam R. Physiological effect of prone positioning in mechanically ventilated SARS-CoV-2- infected patients with severe ARDS: An observational study. J Anaesthesiol Clin Pharmacol 2022; 38:S120-S124. [PMID: 36060194 PMCID: PMC9438844 DOI: 10.4103/joacp.joacp_282_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/17/2021] [Accepted: 08/19/2021] [Indexed: 11/04/2022] Open
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Dickel S, Grimm C, Popp M, Struwe C, Sachkova A, Golinski M, Seeber C, Fichtner F, Heise D, Kranke P, Meissner W, Laudi S, Voigt-Radloff S, Meerpohl J, Moerer O. A Nationwide Cross-Sectional Online Survey on the Treatment of COVID-19-ARDS: High Variance in Standard of Care in German ICUs. J Clin Med 2021; 10:3363. [PMID: 34362146 PMCID: PMC8347152 DOI: 10.3390/jcm10153363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 07/20/2021] [Accepted: 07/26/2021] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Coronavirus disease (COVID-19) has recently dominated scientific literature. Incomplete understanding and a lack of data concerning the pathophysiology, epidemiology, and optimal treatment of the disease has resulted in conflicting recommendations. Adherence to existing guidelines and actual treatment strategies have thus far not been studied systematically. We hypothesized that capturing the variance in care would lead to the discovery of aspects that need further research and-in case of proven benefits of interventions not being performed-better communication to care providers. METHODS This article is based on a quantitative and qualitative cross-sectional mixed-methods online survey among intensive-care physicians in Germany during the COVID-19 pandemic by the CEOsys (COVID-19 Evidence Ecosystem) network, endorsed by the German Interdisciplinary Association for Intensive Care and Emergency Medicine (DIVI) conducted from December 3 to 31 December 2020. RESULTS We identified several areas of care with an especially high variance in treatment among hospitals in Germany. Crucially, 51.5% of the participating ICUs (n = 205) reported using intubation as a last resort for respiratory failure in COVID-19 patients, while 21.8% used intubation early after admission. Furthermore, 11.5% considered extracorporeal membrane oxygenation (ECMO) in awake patients. Finally, 72.3% of respondents used the ARDS-network-table to titrate positive end-expiratory-pressure (PEEP) levels, with 36.9% choosing the low-PEEP table and 41.8% the high-PEEP table. CONCLUSIONS We found that significant differences exist between reported treatment strategies and that adherence to published guidelines is variable. We describe necessary steps for future research based on our results highlighting significant clinical variability in care.
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Affiliation(s)
- Steffen Dickel
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Göttingen, 37085 Göttingen, Germany; (S.D.); (C.G.); (C.S.); (A.S.); (M.G.); (D.H.)
| | - Clemens Grimm
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Göttingen, 37085 Göttingen, Germany; (S.D.); (C.G.); (C.S.); (A.S.); (M.G.); (D.H.)
| | - Maria Popp
- Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, University Hospital Wuerzburg, 97080 Wuerzburg, Germany; (M.P.); (P.K.)
| | - Claudia Struwe
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Göttingen, 37085 Göttingen, Germany; (S.D.); (C.G.); (C.S.); (A.S.); (M.G.); (D.H.)
| | - Alexandra Sachkova
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Göttingen, 37085 Göttingen, Germany; (S.D.); (C.G.); (C.S.); (A.S.); (M.G.); (D.H.)
| | - Martin Golinski
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Göttingen, 37085 Göttingen, Germany; (S.D.); (C.G.); (C.S.); (A.S.); (M.G.); (D.H.)
| | - Christian Seeber
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Leipzig, 04103 Leipzig, Germany; (C.S.); (F.F.); (S.L.)
| | - Falk Fichtner
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Leipzig, 04103 Leipzig, Germany; (C.S.); (F.F.); (S.L.)
| | - Daniel Heise
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Göttingen, 37085 Göttingen, Germany; (S.D.); (C.G.); (C.S.); (A.S.); (M.G.); (D.H.)
| | - Peter Kranke
- Department of Anaesthesiology, Intensive Care, Emergency and Pain Medicine, University Hospital Wuerzburg, 97080 Wuerzburg, Germany; (M.P.); (P.K.)
| | - Winfried Meissner
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Jena, 07743 Jena, Germany;
| | - Sven Laudi
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Leipzig, 04103 Leipzig, Germany; (C.S.); (F.F.); (S.L.)
| | - Sebastian Voigt-Radloff
- Institute for Evidence in Medicine, Faculty of Medicine and Medical Center, University of Freiburg, 79106 Freiburg, Germany; (S.V.-R.); (J.M.)
| | - Joerg Meerpohl
- Institute for Evidence in Medicine, Faculty of Medicine and Medical Center, University of Freiburg, 79106 Freiburg, Germany; (S.V.-R.); (J.M.)
- Cochrane Germany, Cochrane Germany Foundation, 79110 Freiburg, Germany
| | - Onnen Moerer
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Göttingen, 37085 Göttingen, Germany; (S.D.); (C.G.); (C.S.); (A.S.); (M.G.); (D.H.)
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Abstract
BACKGROUND Acute respiratory distress syndrome (ARDS) was first described in 1967, but its definition has evolved considerably since then. ARDS is defined as the onset of hypoxemia, tachypnea, and loss of lung compliance due to some stimulus. In the United States, the incidence of ARDS has been growing because it is being increasingly recognized. The incidence of ARDS has also gone up recently due to the COVID-19 pandemic. AREAS OF UNCERTAINTY To date, there is no known one treatment for ARDS. Multiple studies have looked into various causes of ARDS, pathophysiology, and ventilation and management strategies. However, there is still considerable variability in the treatment and management of these patients from institution to institution. DATA SOURCES A literature search was conducted through PubMed and Google Scholar. Publications describing the epidemiology, diagnostic criteria, pathophysiology, and treatment were included in this review. RESULTS The definition of ARDS has evolved over the years. The most recent and agreed upon diagnostic criteria are based on the Berlin criteria for ARDS. Management of patients with ARDS includes low tidal volume ventilation, prone ventilation, paralysis in certain patient populations, and perhaps extracorporeal membrane oxygenation (ECMO). This also applies to patients with ARDS due to COVID-19. CONCLUSIONS Patients with ARDS have a high mortality due to the incredibly complex disease process. Because of the complexity of ARDS, the management and treatment is equally as difficult. This article reviews some of the strategies used to date, including the role of ECMO, and includes some society recommendations. Further research must be done into which methods best guide lung ventilation in severe ARDS and patients on ECMO.
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Longobardo A, Snow TA, Tam K, Singer M, Bellingan G, Arulkumaran N. Non-specialist therapeutic strategies in acute respiratory distress syndrome. Minerva Anestesiol 2021; 87:803-816. [PMID: 33594874 DOI: 10.23736/s0375-9393.21.15254-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
INTRODUCTION Acute respiratory distress syndrome (ARDS) is associated with significant morbidity and mortality. We undertook a meta-analysis of randomized controlled trials (RCTs) to determine the mortality benefit of non-specialist therapeutic interventions for ARDS available to general critical care units. EVIDENCE ACQUISITION A systematic search of MEDLINE, Embase, and the Cochrane Central Register for RCTs investigating therapeutic interventions in ARDS including corticosteroids, fluid management strategy, high PEEP, low tidal volume ventilation, neuromuscular blockade, prone position ventilation, or recruitment maneuvers. Data was collected on demographic information, treatment strategy, duration and dose of treatment, and primary (28 or 30-day mortality) and secondary (P<inf>a</inf>O<inf>2</inf>:FiO<inf>2</inf> ratio at 24-48 hours) outcomes. EVIDENCE SYNTHESIS No improvement in 28-day mortality could be demonstrated in three RCTs investigating high PEEP (28.0% vs. 30.2% control; risk ratio [confidence interval] 0.93 [0.82-1.06]; eight assessing prone position ventilation (39.3% vs. 44.5%; RR 0.83 [0.68-1.01]; seven investigating neuromuscular blockade (37.8% vs. 42.0%; RR 0.91 [0.81-1.03]); ten investigating recruitment maneuvers (42.4% vs. 42.1%; RR 1.01 [0.91-1.12]); eight investigating steroids (34.8% vs. 41.1%; RR 0.81 [0.59-1.12]); and one investigating conservative fluid strategies (25.4% vs. 28.4%; RR 0.90 [0.73-1.10]). Three studies assessing low tidal volume ventilation (33.1% vs. 41.9%; RR 0.79 (0.68-0.91); P=0.001), and subgroup analyses within studies investigating prone position ventilation greater than 12 hours (33.1% vs. 44.4%; RR 0.75 [0.59-0.95), P=0.02) did reveal outcome benefit. CONCLUSIONS Among non-specialist therapeutic strategies available to general critical care units, low tidal volumes and prone position ventilation for greater than 12 hours improve mortality in ARDS.
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Affiliation(s)
- Alessia Longobardo
- Bloomsbury Institute of Intensive Care Medicine, University College London, London, UK
| | - Timothy A Snow
- Bloomsbury Institute of Intensive Care Medicine, University College London, London, UK - .,Royal Free Perioperative Research Group, Royal Free Hospital, London, UK
| | - Karen Tam
- Bloomsbury Institute of Intensive Care Medicine, University College London, London, UK
| | - Mervyn Singer
- Bloomsbury Institute of Intensive Care Medicine, University College London, London, UK
| | - Geoff Bellingan
- Bloomsbury Institute of Intensive Care Medicine, University College London, London, UK
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27
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Abstract
The estimation of pleural pressure with esophageal manometry has been used for decades, and it has been a fertile area of physiology research in healthy subject as well as during mechanical ventilation in patients with lung injury. However, its scarce adoption in clinical practice takes its roots from the (false) ideas that it requires expertise with years of training, that the values obtained are not reliable due to technical challenges or discrepant methods of calculation, and that measurement of esophageal pressure has not proved to benefit patient outcomes. Despites these criticisms, esophageal manometry could contribute to better monitoring, optimization, and personalization of mechanical ventilation from the acute initial phase to the weaning period. This review aims to provide a comprehensive but comprehensible guide addressing the technical aspects of esophageal catheter use, its application in different clinical situations and conditions, and an update on the state of the art with recent studies on this topic and on remaining questions and ways for improvement.
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Affiliation(s)
- Tài Pham
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Ontario, Canada. .,Keenan Research Centre, Li Ka Shing Knowledge Institute, St.Michael's Hospital, Toronto, Ontario, Canada.,Service de médecine intensive-réanimation, Hôpitaux universitaires Paris-Saclay, Hôpital de Bicêtre, APHP, Le Kremlin-Bicêtre, France.,Faculté de Médecine Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Irene Telias
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Ontario, Canada.,Keenan Research Centre, Li Ka Shing Knowledge Institute, St.Michael's Hospital, Toronto, Ontario, Canada.,Department of Medicine, Division of Respirology, University Health Network and Sinai Health System, Toronto, Canada
| | - Jeremy R Beitler
- Center for Acute Respiratory Failure and Division of Pulmonary, Allergy, and Critical Care Medicine, Columbia University College of Physicians & Surgeons, New York, New York
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Clarke J, Geoghegan P, McEvoy N, Boylan M, Ní Choileáin O, Mulligan M, Hogan G, Keogh A, McElvaney OJ, McElvaney OF, Bourke J, McNicholas B, Laffey JG, McElvaney NG, Curley GF. Prone positioning improves oxygenation and lung recruitment in patients with SARS-CoV-2 acute respiratory distress syndrome; a single centre cohort study of 20 consecutive patients. BMC Res Notes 2021; 14:20. [PMID: 33422143 PMCID: PMC7796647 DOI: 10.1186/s13104-020-05426-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 12/18/2020] [Indexed: 01/04/2023] Open
Abstract
Objective We aimed to characterize the effects of prone positioning on respiratory mechanics and oxygenation in invasively ventilated patients with SARS-CoV-2 ARDS. Results This was a prospective cohort study in the Intensive Care Unit (ICU) of a tertiary referral centre. We included 20 consecutive, invasively ventilated patients with laboratory confirmed SARS-CoV-2 related ARDS who underwent prone positioning in ICU as part of their management. The main outcome was the effect of prone positioning on gas exchange and respiratory mechanics. There was a median improvement in the PaO2/FiO2 ratio of 132 in the prone position compared to the supine position (IQR 67–228). We observed lower PaO2/FiO2 ratios in those with low (< median) baseline respiratory system static compliance, compared to those with higher (> median) static compliance (P < 0.05). There was no significant difference in respiratory system static compliance with prone positioning. Prone positioning was effective in improving oxygenation in SARS-CoV-2 ARDS. Furthermore, poor respiratory system static compliance was common and was associated with disease severity. Improvements in oxygenation were partly due to lung recruitment. Prone positioning should be considered in patients with SARS-CoV-2 ARDS.
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Affiliation(s)
- Jennifer Clarke
- Department of Anaesthesia and Critical Care, Royal College of Surgeons Ireland, Smurfit Building, Beaumont Hospital, Dublin 9, D09 YD60, Ireland.,Beaumont Hospital, Dublin 9, Ireland
| | - Pierce Geoghegan
- Department of Anaesthesia and Critical Care, Royal College of Surgeons Ireland, Smurfit Building, Beaumont Hospital, Dublin 9, D09 YD60, Ireland.,Beaumont Hospital, Dublin 9, Ireland
| | - Natalie McEvoy
- Department of Anaesthesia and Critical Care, Royal College of Surgeons Ireland, Smurfit Building, Beaumont Hospital, Dublin 9, D09 YD60, Ireland.,Beaumont Hospital, Dublin 9, Ireland
| | | | | | | | - Grace Hogan
- Department of Anaesthesia and Critical Care, Royal College of Surgeons Ireland, Smurfit Building, Beaumont Hospital, Dublin 9, D09 YD60, Ireland
| | - Aoife Keogh
- Department of Anaesthesia and Critical Care, Royal College of Surgeons Ireland, Smurfit Building, Beaumont Hospital, Dublin 9, D09 YD60, Ireland
| | | | | | - John Bourke
- Galway University Hospital, University Road, Galway, Ireland
| | | | - John G Laffey
- Galway University Hospital, University Road, Galway, Ireland
| | | | - Gerard F Curley
- Department of Anaesthesia and Critical Care, Royal College of Surgeons Ireland, Smurfit Building, Beaumont Hospital, Dublin 9, D09 YD60, Ireland. .,Beaumont Hospital, Dublin 9, Ireland.
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Stevanović P. Treatment of critically ill COVID-19 patients: Practical guidelines. MEDICINSKI PODMLADAK 2021. [DOI: 10.5937/mp72-33371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
The coronavirus disease pandemic (2019) has burdened health systems around the world with a large number of severe patients in a short period of time. According to the law of large numbers, a significant number of critically ill COVID-19 patients appear in such conditions which require treatment in the intensive care unit. That percentage of those patients is around 3 - 5% in different countries. It is similar in Serbia; however, every rule has its exceptions. KBC "Dr Dragiša Mišović-Dedinje" in Belgrade has been determined to take care of the most difficult COVID-19 patients since the beginning of the epidemic due to its space, organizational and personnel possibilities. Out of the total number of patients treated in KBC "Dr Dragiša Mišović-Dedinje", about 25% of patients were treated in the intensive care unit for the above mentioned reasons. Guided by valid treatment protocols, Anesthesiology and Intensive Care clinic of the KBC "Dr Dragiša Mišović-Dedinje" has developed its own work protocols for rapid diagnosis, isolation and clinical management of such difficult patients. These protocols are important not only for the treatment of the most severe COVID-19 patients, but also for the best utilization of hospital resources, as well as for the prevention of the spread of the infection to the medical staff. Extensive experience in the treatment of critically ill patients was gained from the entire engagement during the epidemic, experienced doctors, anesthesiologists-intensivists with great knowledge in the field of work in the intensive care unit, but also managers of clinics and institutions, who can share their experience with health care policy makers. It is clear that in the future, the capacities and organization of work in the field of intensive care medicine should be redefined, as well as health workers should be trained to work in the most demanding field of medicine. Expert experience in the form of practical guidelines, derived from over fourteen months of continuous work in the red zone of COVID-19, where they fought for every breath of the patient, in this review are translated into simplified guidelines for orientation of those who find themselves in a similar situation.
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Dalla Corte F, Mauri T, Spinelli E, Lazzeri M, Turrini C, Albanese M, Abbruzzese C, Lissoni A, Galazzi A, Eronia N, Bronco A, Maffezzini E, Pesenti A, Foti G, Bellani G, Grasselli G. Dynamic bedside assessment of the physiologic effects of prone position in acute respiratory distress syndrome patients by electrical impedance tomography. Minerva Anestesiol 2020; 86:1057-1064. [DOI: 10.23736/s0375-9393.20.14130-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Baratella E, Crivelli P, Marrocchio C, Bozzato AM, Vito AD, Madeddu G, Saderi L, Confalonieri M, Tenaglia L, Cova MA. Severity of lung involvement on chest X-rays in SARS-coronavirus-2 infected patients as a possible tool to predict clinical progression: an observational retrospective analysis of the relationship between radiological, clinical, and laboratory data. J Bras Pneumol 2020; 46:e20200226. [PMID: 32965310 PMCID: PMC7572267 DOI: 10.36416/1806-3756/e20200226] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 07/14/2020] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE To investigate the diagnostic accuracy of a chest X-ray (CXR) score and of clinical and laboratory data in predicting the clinical course of patients with SARS coronavirus 2 (SARS-CoV-2) infection. METHODS This is a pilot multicenter retrospective study including patients with SARS-CoV-2 infection admitted to the ERs in three hospitals in Italy between February and March of 2020. Two radiologists independently evaluated the baseline CXR of the patients using a semi-quantitative score to determine the severity of lung involvement: a score of 0 represented no lung involvement, whereas scores of 1 to 4 represented the first (less severe) to the fourth (more severe) quartiles regarding the severity of lung involvement. Relevant clinical and laboratory data were collected. The outcome of patients was defined as severe if noninvasive ventilation (NIV) or intubation was necessary, or if the patient died. RESULTS Our sample comprised 140 patients. Most of the patients were symptomatic (132/138; 95.7%), and 133/140 patients (95.0%) presented with opacities on CXR at admission. Of the 140 patients, 7 (5.0%) showed no lung involvement, whereas 58 (41.4%), 31 (22.1%), 26 (18.6%), and 18 (12.9%), respectively, scored 1, 2, 3, and 4. In our sample, 66 patients underwent NIV or intubation, 37 of whom scored 1 or 2 on baseline CXR, and 28 patients died. CONCLUSIONS The severity score based on CXR seems to be able to predict the clinical progression in cases that scored 0, 3, or 4. However, the score alone cannot predict the clinical progression in patients with mild-to-moderate parenchymal involvement (scores 1 and 2).
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Affiliation(s)
- Elisa Baratella
- . Dipartimento di Radiologia, Università degli Studi di Trieste, Trieste, Italia
| | - Paola Crivelli
- . Diagnostica per immagini 2, AOU Sassari, Sassari, Italia
| | - Cristina Marrocchio
- . Dipartimento di Scienze Mediche, Chirurgiche e Sperimentali, Università degli Studi di Trieste, Trieste, Italia
| | - Alessandro Marco Bozzato
- . Dipartimento di Scienze Mediche, Chirurgiche e Sperimentali, Università degli Studi di Trieste, Trieste, Italia
| | - Andrea De Vito
- . Dipartimento di Scienze Mediche, Chirurgiche e Sperimentali, Università degli Studi di Sassari, Sassari, Italia
| | - Giordano Madeddu
- . Dipartimento di Scienze Mediche, Chirurgiche e Sperimentali, Università degli Studi di Sassari, Sassari, Italia
| | - Laura Saderi
- . Unità di Epidemiologia Clinica e Statistica Medica, Dipartimento di Scienze Mediche Chirurgiche e Sperimentali, Università degli Studi di Sassari, Sassari, Italia
| | - Marco Confalonieri
- . Dipartimento di Pneumologia, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI), Trieste, Italia
| | - Luigi Tenaglia
- . Dipartimento ad Attività Integrata di Emergenza, Urgenza ed Accettazione, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI), Trieste, Italia
| | - Maria Assunta Cova
- . Dipartimento di Radiologia, Università degli Studi di Trieste, Trieste, Italia
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Alfano G, Fontana F, Ferrari A, Guaraldi G, Mussini C, Magistroni R, Cappelli G. Peritoneal dialysis in the time of coronavirus disease 2019. Clin Kidney J 2020; 13:265-268. [PMID: 32699612 PMCID: PMC7367121 DOI: 10.1093/ckj/sfaa093] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 04/30/2020] [Indexed: 01/29/2023] Open
Abstract
In the current setting of global containment, peritoneal dialysis (PD) and home haemodialysis are the best modalities of renal replacement therapy (RRT) to reduce the rate of transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Considering the shorter and easier training programme of PD compared to home haemodialysis, PD appears a practical solution for patients with end-stage renal disease to reduce the risk of hospital-acquired infection. PD offers the advantage of minimizing the risk of viral transmission through interpersonal contact that commonly occurs during the haemodialysis session and while travelling from home to the haemodialysis facility using public transport services. To overcome barriers to health care access due to the containment measures for this emerging disease, telemedicine is a useful and reliable tool for delivering health care without exposing patients to the risk of contact. However, novel issues including handling of potentially infected dialysate, caregivers’ infectious risk and adequacy of PD in critically ill patients with acute respiratory distress syndrome remain to be clarified. In conclusion, PD should be preferred to the other modalities of RRT during the coronavirus disease 2019 (COVID-19) outbreak because it can be a solution to cope with the increased number of infected patients worldwide.
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Affiliation(s)
- Gaetano Alfano
- Surgical, Medical and Dental Department of Morphological Sciences, Section of Nephrology, University of Modena and Reggio Emilia, Modena, Italy.,Nephrology Dialysis and Transplant Unit, University Hospital of Modena, Modena, Italy
| | - Francesco Fontana
- Nephrology Dialysis and Transplant Unit, University Hospital of Modena, Modena, Italy
| | - Annachiara Ferrari
- Surgical, Medical and Dental Department of Morphological Sciences, Section of Nephrology, University of Modena and Reggio Emilia, Modena, Italy
| | - Giovanni Guaraldi
- Clinic of Infectious Diseases, University Hospital of Modena, Modena, Italy
| | - Cristina Mussini
- Clinic of Infectious Diseases, University Hospital of Modena, Modena, Italy
| | - Riccardo Magistroni
- Surgical, Medical and Dental Department of Morphological Sciences, Section of Nephrology, University of Modena and Reggio Emilia, Modena, Italy.,Nephrology Dialysis and Transplant Unit, University Hospital of Modena, Modena, Italy
| | - Gianni Cappelli
- Surgical, Medical and Dental Department of Morphological Sciences, Section of Nephrology, University of Modena and Reggio Emilia, Modena, Italy.,Nephrology Dialysis and Transplant Unit, University Hospital of Modena, Modena, Italy
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Lentz S, Roginski MA, Montrief T, Ramzy M, Gottlieb M, Long B. Initial emergency department mechanical ventilation strategies for COVID-19 hypoxemic respiratory failure and ARDS. Am J Emerg Med 2020; 38:2194-2202. [PMID: 33071092 PMCID: PMC7335247 DOI: 10.1016/j.ajem.2020.06.082] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 06/24/2020] [Accepted: 06/29/2020] [Indexed: 01/08/2023] Open
Abstract
INTRODUCTION Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is an emerging viral pathogen that causes the novel coronavirus disease of 2019 (COVID-19) and may result in hypoxemic respiratory failure necessitating invasive mechanical ventilation in the most severe cases. OBJECTIVE This narrative review provides evidence-based recommendations for the treatment of COVID-19 related respiratory failure requiring invasive mechanical ventilation. DISCUSSION In severe cases, COVID-19 leads to hypoxemic respiratory failure that may meet criteria for acute respiratory distress syndrome (ARDS). The mainstay of treatment for ARDS includes a lung protective ventilation strategy with low tidal volumes (4-8 mL/kg predicted body weight), adequate positive end-expiratory pressure (PEEP), and maintaining a plateau pressure of < 30 cm H2O. While further COVID-19 specific studies are needed, current management should focus on supportive care, preventing further lung injury from mechanical ventilation, and treating the underlying cause. CONCLUSIONS This review provides evidence-based recommendations for the treatment of COVID-19 related respiratory failure requiring invasive mechanical ventilation.
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Affiliation(s)
- Skyler Lentz
- Division of Emergency Medicine, Department of Surgery, The University of Vermont Larner College of Medicine, USA
| | - Matthew A Roginski
- Divisions of Emergency Medicine and Critical Care Medicine, Dartmouth-Hitchcock Medical Center, USA
| | - Tim Montrief
- Department of Emergency Medicine, Jackson Memorial Health System, USA
| | - Mark Ramzy
- Department of Emergency Medicine, Maimonides Medical Center, USA
| | - Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, USA
| | - Brit Long
- SAUSHEC, Emergency Medicine, Brooke Army Medical Center, USA.
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Jochmans S, Mazerand S, Chelly J, Pourcine F, Sy O, Thieulot-Rolin N, Ellrodt O, Mercier Des Rochettes E, Michaud G, Serbource-Goguel J, Vinsonneau C, Vong LVP, Monchi M. Duration of prone position sessions: a prospective cohort study. Ann Intensive Care 2020; 10:66. [PMID: 32449068 PMCID: PMC7245995 DOI: 10.1186/s13613-020-00683-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 05/16/2020] [Indexed: 12/16/2022] Open
Abstract
Background Prone position (PP) is highly recommended in moderate-to-severe ARDS. However, the optimal duration of PP sessions remains unclear. We searched to evaluate the time required to obtain the maximum physiological effect, and to search for parameters related to patient survival in PP. Methods and results It was a prospective, monocentric, physiological study. We included in the study all prone-positioned patients in our ICU between June 2016 and January 2018. Pulmonary mechanics, data from volumetric capnography and arterial blood gas were recorded before prone positioning, 2 h after proning, before return to a supine position (SP) and 2 h after return to SP. Dynamic parameters were recorded before proning and every 30 min during the session until 24 h. 103 patients (ARDS 95%) were included performing 231 PP sessions with a mean length of 21.5 ± 5 h per session. They presented a significant increase in pH, static compliance and PaO2/FiO2 with a significant decrease in PaCO2, Pplat, phase 3 slope of the volumetric capnography, PetCO2, VD/VT-phy and ΔP. The beneficial physiological effects continued after 16 h of PP and at least up to 24 h in some patients. The evolution of the respiratory parameters during the first session and also during the pooled sessions did not find any predictor of response to PP, whether before, during or 2 h after the return in SP. Conclusions PP sessions should be prolonged at least 24 h and be extended in the event that the PaO2/FiO2 ratio at 24 h remains below 150, especially since no criteria can predict which patient will benefit or not from it. Trial registration The trial has been registered on 28 June 2016 in ClinicalTrials.gov (NCT 02816190) (https://clinicaltrials.gov/ct2/show/NCT02816190?term=propocap&rank=1).
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Affiliation(s)
- Sebastien Jochmans
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France. .,Unité de Recherche Clinique, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France.
| | - Sandie Mazerand
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France
| | - Jonathan Chelly
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France.,Unité de Recherche Clinique, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France
| | - Franck Pourcine
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France
| | - Oumar Sy
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France
| | - Nathalie Thieulot-Rolin
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France
| | - Olivier Ellrodt
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France
| | - Emmanuelle Mercier Des Rochettes
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France.,Service de Réanimation Médicale, AP-HP, Hôpital Saint-Antoine, 184 rue du Faubourg Saint-Antoine, 75012, Paris, France
| | - Gaël Michaud
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France
| | - Jean Serbource-Goguel
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France
| | - Christophe Vinsonneau
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France.,Unité de Recherche Clinique, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France.,Service de Réanimation, Hôpital de Béthune, 27 rue Delbecque, 62660, Beuvry, France
| | - Ly Van Phach Vong
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France
| | - Mehran Monchi
- Département de Médecine Intensive-Réanimation, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France.,Unité de Recherche Clinique, GH Sud Ile-de-France, Hôpital de Melun, 270 avenue Marc Jacquet, 77000, Melun, France
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Scaramuzzo G, Ball L, Pino F, Ricci L, Larsson A, Guérin C, Pelosi P, Perchiazzi G. Influence of Positive End-Expiratory Pressure Titration on the Effects of Pronation in Acute Respiratory Distress Syndrome: A Comprehensive Experimental Study. Front Physiol 2020; 11:179. [PMID: 32226390 PMCID: PMC7080860 DOI: 10.3389/fphys.2020.00179] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 02/17/2020] [Indexed: 01/08/2023] Open
Abstract
Prone position can reduce mortality in acute respiratory distress syndrome (ARDS), but several studies found variable effects on oxygenation and lung mechanics. It is unclear whether different positive end-expiratory pressure (PEEP) titration techniques modify the effect of prone position. We tested, in an animal model of ARDS, if the PEEP titration method may influence the effect of prone position on oxygenation and lung protection. In a crossover study in 10 piglets with a two-hit injury ARDS model, we set the "best PEEP" according to the ARDS Network low-PEEP table (BPARDS) or targeting the lowest transpulmonary driving pressure (BPDPL). We measured gas exchange, lung mechanics, aeration, ventilation, and perfusion with computed tomography (CT) and electrical impedance tomography in each position with both PEEP titration techniques. The primary endpoint was the PaO2/FiO2 ratio. Secondary outcomes were lung mechanics, regional distribution of ventilation, regional distribution of perfusion, and homogeneity of strain derived by CT scan. The PaO2/FiO2 ratio increased in prone position when PEEP was set with BPARDS [difference 54 (19-106) mmHg, p = 0.04] but not with BPDPL [difference 17 (-24 to 68) mmHg, p = 0.99]. The transpulmonary driving pressure significantly decreased during prone position with both BPARDS [difference -0.9 (-1.5 to -0.9) cmH2O, p = 0.009] and BPDPL [difference -0.55 (-1.6 to -0.4) cmH2O, p = 0.04]. Pronation homogenized lung regional strain and ventilation and redistributed the ventilation/perfusion ratio along the sternal-to-vertebral gradient. The PEEP titration technique influences the oxygenation response to prone position. However, the lung-protective effects of prone position could be independent of the PEEP titration strategy.
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Affiliation(s)
- Gaetano Scaramuzzo
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy.,Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Lorenzo Ball
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy.,San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy
| | - Fabio Pino
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.,Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
| | - Lucia Ricci
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy.,San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy
| | - Anders Larsson
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Claude Guérin
- Groupement Hospitalier Centre, Médecine Intensive Réanimation, Hospices Civils de Lyon, Lyon, France.,Université de Lyon, Université Claude Bernard Lyon 1, Villeurbanne, France.,INSERM 955 - Eq13, Institut Mondor de Recherche Biomédicale, Créteil, France
| | - Paolo Pelosi
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy.,San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy
| | - Gaetano Perchiazzi
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.,Department of Anesthesia, Operation and Intensive Care Medicine, Akademiska Sjukhuset, Uppsala, Sweden
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Saran S, Gurjar M, Azim A, Mishra P, Ghosh PS, Baronia AK, Poddar B, Singh RK. Trans-Esophageal Doppler Assessment of Acute Hemodynamic Changes Due to Prone Positioning in Acute Respiratory Distress Syndrome Patients. Shock 2019; 52:e39-e44. [DOI: 10.1097/shk.0000000000001290] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Riad Z, Mezidi M, Subtil F, Louis B, Guérin C. Short-Term Effects of the Prone Positioning Maneuver on Lung and Chest Wall Mechanics in Patients with Acute Respiratory Distress Syndrome. Am J Respir Crit Care Med 2019; 197:1355-1358. [PMID: 29232156 DOI: 10.1164/rccm.201709-1853le] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Zakaria Riad
- 1 Hospices Civils de Lyon Lyon, France.,2 Université de Lyon Lyon, France
| | - Mehdi Mezidi
- 1 Hospices Civils de Lyon Lyon, France.,2 Université de Lyon Lyon, France
| | - Fabien Subtil
- 1 Hospices Civils de Lyon Lyon, France.,2 Université de Lyon Lyon, France.,3 Laboratoire de Biométrie et Biologie Evolutive UMR 5558 Villeurbanne, France and
| | | | - Claude Guérin
- 1 Hospices Civils de Lyon Lyon, France.,2 Université de Lyon Lyon, France.,4 INSERM U955 Créteil, France
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Abstract
Enteral nutrition (EN) can maintain the structure and function of the gastrointestinal mucosa better than parenteral nutrition. In critically ill patients, EN must be discontinued or interrupted, if gastrointestinal complications, particularly vomiting and bowel movement disorders, do not resolve with appropriate management. To avoid such gastrointestinal complications, EN should be started as soon as possible with a small amount of EN first and gradually increased. EN itself may also promote intestinal peristalsis. The measures to decrease the risk of reflux and aspiration include elevation the head of the bed (30° to 45°), switch to continuous administration, administration of prokinetic drugs or narcotic antagonists to promote gastrointestinal motility, and switch to jejunal access (postpyloric route). Moreover, the control of bowel movement is also important for intensive care and management. In particular, prolonged diarrhea can cause deficiency in nutrient absorption, malnutrition, and increase in mortality. In addition, diarrhea may cause a decrease the circulating blood volume, metabolic acidosis, electrolyte abnormalities, and contamination of surgical wounds and pressure ulcers. If diarrhea occurs in critically ill patients on EN management, it is important to determine whether diarrhea is EN-related or not. After ruling out the other causes of diarrhea, the measures to prevent EN-related diarrhea include switch to continuous infusion, switch to gastric feeding, adjustment of agents that improve gastrointestinal peristalsis or laxative, administration of antidiarrheal drugs, changing the type of EN formula, and semisolidification of EN formula. One of the best ways to success for EN management is to continue as long as possible without interruption and discontinuation of EN easily by appropriate measures, even if gastrointestinal complications occur.
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Affiliation(s)
- Hiroomi Tatsumi
- Department of Intensive Care Medicine, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo, Hokkaido 060-8543 Japan
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Mezidi M, Guérin C. Effects of patient positioning on respiratory mechanics in mechanically ventilated ICU patients. ANNALS OF TRANSLATIONAL MEDICINE 2018; 6:384. [PMID: 30460258 DOI: 10.21037/atm.2018.05.50] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Changes in the body position of patients receiving mechanical ventilation in intensive care unit are frequent. Contrary to healthy humans, little data has explored the physiological impact of position on respiratory mechanics. The objective of present paper is to review the available data on the effect of changing body position on respiratory mechanics in ICU patients receiving mechanical ventilation. Supine position (lying flat) or lateral position do not seem beneficial for critically ill patients in terms of respiratory mechanics. The sitting position (with thorax angulation >30° from the horizontal plane) is associated with improvement of functional residual capacity (FRC), oxygenation and reduction of work of breathing. There is a critical angle of inclination in the seated position above which the increase in abdominal pressure contributes to increase chest wall elastance and offset the increase in FRC. The impact of prone position on respiratory mechanics is complex, but the increase in chest wall elastance is a central mechanism. To sum up, both sitting and prone positions provides beneficial impact on respiratory mechanics of mechanically ventilated patients as compared to supine position.
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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
| | - Claude Guérin
- Service de réanimation médicale, Hôpital de la Croix Rousse, Hospices civils de Lyon, Lyon, France.,Université de Lyon, Lyon, France.,Institut Mondor de Recherche Biomédicale, INSERM 955, Créteil, France
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Bringer M, Gay L, Gorun C, Hassaine A, Molimard F, Noui A, Romani-Jerez A, Trap A, Zoppi P, Etchepare S, Guérin C. Le décubitus ventral : de la théorie à la pratique. MEDECINE INTENSIVE REANIMATION 2018. [DOI: 10.3166/rea-2018-0065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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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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Lung volumes and lung volume recruitment in ARDS: a comparison between supine and prone position. Ann Intensive Care 2018; 8:25. [PMID: 29445887 PMCID: PMC5812959 DOI: 10.1186/s13613-018-0371-0] [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: 11/02/2017] [Accepted: 02/08/2018] [Indexed: 12/26/2022] Open
Abstract
Background The use of positive end-expiratory pressure (PEEP) and prone position (PP) is common in the management of severe acute respiratory distress syndrome patients (ARDS). We conducted this study to analyze the variation in lung volumes and PEEP-induced lung volume recruitment with the change from supine position (SP) to PP in ARDS patients. Methods The investigation was conducted in a multidisciplinary intensive care unit. Patients who met the clinical criteria of the Berlin definition for ARDS were included. The responsible physician set basal PEEP. To avoid hypoxemia, FiO2 was increased to 0.8 1 h before starting the protocol. End-expiratory lung volume (EELV) and functional residual capacity (FRC) were measured using the nitrogen washout/washin technique. After the procedures in SP, the patients were turned to PP and 1 h later the same procedures were made in PP. Results Twenty-three patients were included in the study, and twenty were analyzed. The change from SP to PP significantly increased FRC (from 965 ± 397 to 1140 ± 490 ml, p = 0.008) and EELV (from 1566 ± 476 to 1832 ± 719 ml, p = 0.008), but PEEP-induced lung volume recruitment did not significantly change (269 ± 186 ml in SP to 324 ± 188 ml in PP, p = 0.263). Dynamic strain at PEEP decreased with the change from SP to PP (0.38 ± 0.14 to 0.33 ± 0.13, p = 0.040). Conclusions As compared to supine, prone position increases resting lung volumes and decreases dynamic lung strain. Electronic supplementary material The online version of this article (10.1186/s13613-018-0371-0) contains supplementary material, which is available to authorized users.
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Henderson WR, Chen L, Amato MBP, Brochard LJ. Fifty Years of Research in ARDS. Respiratory Mechanics in Acute Respiratory Distress Syndrome. Am J Respir Crit Care Med 2017; 196:822-833. [PMID: 28306327 DOI: 10.1164/rccm.201612-2495ci] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Acute respiratory distress syndrome is a multifactorial lung injury that continues to be associated with high levels of morbidity and mortality. Mechanical ventilation, although lifesaving, is associated with new iatrogenic injury. Current best practice involves the use of small Vt, low plateau and driving pressures, and high levels of positive end-expiratory pressure. Collectively, these interventions are termed "lung-protective ventilation." Recent investigations suggest that individualized measurements of pulmonary mechanical variables rather than population-based ventilation prescriptions may be used to set the ventilator with the potential to improve outcomes beyond those achieved with standard lung protective ventilation. This review outlines the measurement and application of clinically applicable pulmonary mechanical concepts, such as plateau pressures, driving pressure, transpulmonary pressures, stress index, and measurement of strain. In addition, the concept of the "baby lung" and the utility of dynamic in addition to static measures of pulmonary mechanical variables are discussed.
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Affiliation(s)
- William R Henderson
- 1 Division of Critical Care Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Lu Chen
- 2 Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada.,3 Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada; and
| | - Marcelo B P Amato
- 4 Cardio-Pulmonary Department, Pulmonary Division, Heart Institute (Incor), University of São Paulo, São Paulo, Brazil
| | - Laurent J Brochard
- 2 Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada.,3 Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada; and
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Xu Y, Sun Q, Yu Y, Liang W, Liu X, Yang C, Xu Y, Nong L, Chen S, He W, Liu X, Li Y, Zhong N. Prone position ventilation support for acute exacerbation of interstitial lung disease? CLINICAL RESPIRATORY JOURNAL 2017; 12:1372-1380. [PMID: 28749608 DOI: 10.1111/crj.12665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 05/17/2017] [Accepted: 07/10/2017] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Prone position ventilation (PPV) has been shown to improve oxygenation and decrease pulmonary vascular resistance and mortality in patients with severe acute respiratory distress syndrome (ARDS). Whether these benefits of PPV occur similarly in acute exacerbations of interstitial lung disease (ILD) is not clear. We retrospectively explored the use of PPV in acute exacerbation with ILD versus those with severe acute respiratory distress syndrome (severe ARDS). METHODS Retrospective study of the application of PPV in 17 patients with acute exacerbations of ILD and in 19 patients with severe ARDS. Pre- and post-PPV hemodynamic parameters, respiratory mechanics, prognostic indicators, complications and mortality rates at 28, 60 and 90 days were compared. RESULTS There was no difference in baseline characteristics between the two groups except for higher driving pressure and more diastolic dysfunction in ILD group than severe ARDS group Compared with pre-PPV, cardiac index and driving pressure remained unchanged post-PPV in both groups. PPV increased PaO2 /FiO2 [118.7 (92.0, 147.8) pre-PPV vs 132.0 (93.5, 172.0) post-PPV; P < 0.05] and central venous oxygenation in patients with ILD. In patients with severe ARDS, PPV significantly increased PaO2 /FiO2 [109.23 (89,135) pre- PPV vs 126.13 (100.93, 170) post-PPV; P < 0.05] and intrathorax blood volume index. However, mortality rates at 28, 60 and 90 days remained high in both groups (76.4%, 88.2% and 88.2% vs 36.8%, 57.9% and 57.9% in ILD and severe ARDS, respectively; P < 0.05). CONCLUSION Our findings suggest that PPV may improve oxygenation and partially improve hemodynamic parameters during acute exacerbations of ILD.
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Affiliation(s)
- Yuanda Xu
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Qingwen Sun
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Yuheng Yu
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Weibo Liang
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Xuesong Liu
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Chun Yang
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Yonghao Xu
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Lingbo Nong
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Sibei Chen
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Weiqun He
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Xiaoqing Liu
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Yimin Li
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Nanshan Zhong
- Department of Critical Care Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
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Henderson WR, Molgat-Seon Y, Vos W, Lipson R, Ferreira F, Kirby M, Holsbeke CV, Dominelli PB, Griesdale DEG, Sekhon M, Coxson HO, Mayo J, Sheel AW. Functional respiratory imaging, regional strain, and expiratory time constants at three levels of positive end expiratory pressure in an ex vivo pig model. Physiol Rep 2016; 4:e13059. [PMID: 27923979 PMCID: PMC5357821 DOI: 10.14814/phy2.13059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 10/28/2016] [Accepted: 11/05/2016] [Indexed: 12/24/2022] Open
Abstract
Heterogeneity in regional end expiratory lung volume (EELV) may lead to variations in regional strain (ε). High ε levels have been associated with ventilator-associated lung injury (VALI). While both whole lung and regional EELV may be affected by changes in positive end-expiratory pressure (PEEP), regional variations are not revealed by conventional respiratory system measurements. Differential rates of deflation of adjacent lung units due to regional variation in expiratory time constants (τE) may create localized regions of ε that are significantly greater than implied by whole lung measures. We used functional respiratory imaging (FRI) in an ex vivo porcine lung model to: (i) demonstrate that computed tomography (CT)-based imaging studies can be used to assess global and regional values of ε and τE and, (ii) demonstrate that the manipulation of PEEP will cause measurable changes in total and regional ε and τE values. Our study provides three insights into lung mechanics. First, image-based measurements reveal egional variation that cannot be detected by traditional methods such as spirometry. Second, the manipulation of PEEP causes global and regional changes in R, E, ε and τE values. Finally, regional ε and τE were correlated in several lobes, suggesting the possibility that regional τE could be used as a surrogate marker for regional ε.
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Affiliation(s)
- William R Henderson
- Division of Critical Care Medicine, Vancouver General Hospital, Vancouver, British Columbia, Canada
| | | | | | | | | | - Miranda Kirby
- Radiology, The University of British Columbia, Vancouver, British Columbia, Canada
| | | | - Paolo B Dominelli
- School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Donald E G Griesdale
- School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Mypinder Sekhon
- Division of Critical Care Medicine Vancouver General Hospital, Vancouver, British Columbia, Canada
| | - Harvey O Coxson
- Centre for Heart Lung Innovation St Paul's Hospital University of British Columbia, Vancouver, British Columbia, Canada
| | - John Mayo
- Department of Radiology Vancouver General Hospital University of British Columbia, Vancouver, British Columbia, Canada
| | - A William Sheel
- School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada
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Setten M, Plotnikow GA, Accoce M. Prone position in patients with acute respiratory distress syndrome. Rev Bras Ter Intensiva 2016; 28:452-462. [PMID: 27925054 PMCID: PMC5225921 DOI: 10.5935/0103-507x.20160066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 07/18/2016] [Indexed: 12/29/2022] Open
Abstract
Acute respiratory distress syndrome occupies a great deal of attention in
intensive care units. Despite ample knowledge of the physiopathology of this
syndrome, the focus in intensive care units consists mostly of life-supporting
treatment and avoidance of the side effects of invasive treatments. Although
great advances in mechanical ventilation have occurred in the past 20 years,
with a significant impact on mortality, the incidence continues to be high.
Patients with acute respiratory distress syndrome, especially the most severe
cases, often present with refractory hypoxemia due to shunt, which can require
additional treatments beyond mechanical ventilation, among which is mechanical
ventilation in the prone position. This method, first recommended to improve
oxygenation in 1974, can be easily implemented in any intensive care unit with
trained personnel. Prone position has extremely robust bibliographic support. Various randomized
clinical studies have demonstrated the effect of prone decubitus on the
oxygenation of patients with acute respiratory distress syndrome measured in
terms of the PaO2/FiO2 ratio, including its effects on
increasing patient survival. The members of the Respiratory Therapists Committee of the Sociedad
Argentina de Terapia Intensiva performed a narrative review with
the objective of discovering the available evidence related to the
implementation of prone position, changes produced in the respiratory system due
to the application of this maneuver, and its impact on mortality. Finally,
guidelines are suggested for decision-making.
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Affiliation(s)
- Mariano Setten
- Comité de Kinesiología Intensivista, Sociedad Argentina de Terapia Intensiva - Ciudad Autónoma de Buenos Aires, Argentina.,Centro de Educación Médica e Investigaciones Clínicas - CEMIC - Ciudad Autónoma de Buenos Aires, Argentina
| | - Gustavo Adrián Plotnikow
- Comité de Kinesiología Intensivista, Sociedad Argentina de Terapia Intensiva - Ciudad Autónoma de Buenos Aires, Argentina.,Sanatorio Anchorena - Ciudad Autónoma de Buenos Aires, Argentina
| | - Matías Accoce
- Comité de Kinesiología Intensivista, Sociedad Argentina de Terapia Intensiva - Ciudad Autónoma de Buenos Aires, Argentina.,Hospital de Quemados - Ciudad Autónoma de Buenos Aires, Argentina.,Sanatorio Mater Dei - Ciudad Autónoma de Buenos Aires, Argentina
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Impact of Recruitment on Static and Dynamic Lung Strain in Acute Respiratory Distress Syndrome. Anesthesiology 2016; 124:443-52. [PMID: 26569171 DOI: 10.1097/aln.0000000000000946] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Lung strain, defined as the ratio between end-inspiratory volume and functional residual capacity, is a marker of the mechanical load during ventilation. However, changes in lung volumes in response to pressures may occur in injured lungs and modify strain values. The objective of this study was to clarify the role of recruitment in strain measurements. METHODS Six oleic acid-injured pigs were ventilated at positive end-expiratory pressure (PEEP) 0 and 10 cm H2O before and after a recruitment maneuver (PEEP = 20 cm H2O). Lung volumes were measured by helium dilution and inductance plethysmography. In addition, six patients with moderate-to-severe acute respiratory distress syndrome were ventilated with three strategies (peak inspiratory pressure/PEEP: 20/8, 32/8, and 32/20 cm H2O). Lung volumes were measured in computed tomography slices acquired at end-expiration and end-inspiration. From both series, recruited volume and lung strain (total, dynamic, and static) were computed. RESULTS In the animal model, recruitment caused a significant decrease in dynamic strain (from [mean ± SD] 0.4 ± 0.12 to 0.25 ± 0.07, P < 0.01), while increasing the static component. In patients, total strain remained constant for the three ventilatory settings (0.35 ± 0.1, 0.37 ± 0.11, and 0.32 ± 0.1, respectively). Increases in tidal volume had no significant effects. Increasing PEEP constantly decreased dynamic strain (0.35 ± 0.1, 0.32 ± 0.1, and 0.04+0.03, P < 0.05) and increased static strain (0, 0.06 ± 0.06, and 0.28 ± 0.11, P < 0.05). The changes in dynamic and total strain among patients were correlated to the amount of recruited volume. An analysis restricted to the changes in normally aerated lung yielded similar results. CONCLUSION Recruitment causes a shift from dynamic to static strain in early acute respiratory distress syndrome.
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The standard of care of patients with ARDS: ventilatory settings and rescue therapies for refractory hypoxemia. Intensive Care Med 2016; 42:699-711. [PMID: 27040102 PMCID: PMC4828494 DOI: 10.1007/s00134-016-4325-4] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 03/10/2016] [Indexed: 12/28/2022]
Abstract
Purpose Severe ARDS is often associated with refractory hypoxemia, and early identification and treatment of hypoxemia is mandatory. For the management of severe ARDS ventilator settings, positioning therapy, infection control, and supportive measures are essential to improve survival. Methods and results A precise definition of life-threating hypoxemia is not identified. Typical clinical determinations are: arterial partial pressure of oxygen < 60 mmHg and/or arterial oxygenation < 88 % and/or the ratio of PaO2/FIO2 < 100. For mechanical ventilation specific settings are recommended: limitation of tidal volume (6 ml/kg predicted body weight), adequate high PEEP (>12 cmH2O), a recruitment manoeuvre in special situations, and a ‘balanced’ respiratory rate (20-30/min). Individual bedside methods to guide PEEP/recruitment (e.g., transpulmonary pressure) are not (yet) available. Prone positioning [early (≤ 48 hrs after onset of severe ARDS) and prolonged (repetition of 16-hr-sessions)] improves survival. An advanced infection management/control includes early diagnosis of bacterial, atypical, viral and fungal specimen (blood culture, bronchoalveolar lavage), and of infection sources by CT scan, followed by administration of broad-spectrum anti-infectives. Neuromuscular blockage (Cisatracurium ≤ 48 hrs after onset of ARDS), as well as an adequate sedation strategy (score guided) is an important supportive therapy. A negative fluid balance is associated with improved lung function and the use of hemofiltration might be indicated for specific indications. Conclusions A specific standard of care is required for the management of severe ARDS with refractory hypoxemia.
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[Prone positioning of patients during venovenous extracorporeal membrane oxygenation is safe and feasible]. Anaesthesist 2016; 65:250-7. [PMID: 27007777 DOI: 10.1007/s00101-015-0131-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 12/04/2015] [Accepted: 12/09/2015] [Indexed: 01/01/2023]
Abstract
BACKGROUND Prone positioning of patients with acute respiratory distress syndrome (ARDS) has been shown to significantly improve survival rates. Prone positioning reduces collapse of dorsal lung segments with subsequent reduction of alveolar overdistension of ventral lung segments, optimizes lung recruitment and enhances drainage. Patients with ARDS treated by extracorporeal membrane oxygenation (ECMO) can also benefit from prone positioning; however, the procedure is associated with a possible higher risk of serious adverse events. OBJECTIVE The aim of this study was to evaluate the safety and feasibility of prone positioning for patients with severe ARDS during ECMO therapy. MATERIAL AND METHODS This study involved a retrospective analysis of all patients placed in a prone position while being treated by venovenous ECMO (vvECMO) for severe hypoxemia in ARDS as bridge to recovery in the interdisciplinary intensive care unit at the University Hospital Leipzig between January 2009 and August 2013. Baseline data, hospital mortality and serious adverse events were documented. Serious adverse events were defined as dislocation or obstruction of endotracheal tube or tracheal cannula, ECMO cannulas and cardiac arrest. Prone positioning was carried out by at least one doctor and three nurses according to a standardized protocol. Results are given as the median (1st and 3rd quartiles). RESULTS A total of 26 patients were treated with vvECMO as bridge to recovery due to severe ARDS. Causes for ARDS were pneumonia (n = 20) and aspiration (n = 2) and four patients had different rare causes of ARDS. The median time on ECMO was 8 days (6;11) and during this period 134 turning events were documented. Patients were proned for a median of 5 (3;7) periods with a median duration of 12 h (8;12). No serious adverse events were recorded. The hospital mortality was 42% and mortality during the ECMO procedure was 35%. CONCLUSION Prone positioning significantly reduces the mortality of patients with severe ARDS. In this series of 26 patients with severe ARDS during ECMO therapy no serious adverse events were found during the use of prone positioning.
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50
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Bein T, Bischoff M, Brückner U, Gebhardt K, Henzler D, Hermes C, Lewandowski K, Max M, Nothacker M, Staudinger T, Tryba M, Weber-Carstens S, Wrigge H. S2e guideline: positioning and early mobilisation in prophylaxis or therapy of pulmonary disorders : Revision 2015: S2e guideline of the German Society of Anaesthesiology and Intensive Care Medicine (DGAI). Anaesthesist 2015; 64 Suppl 1:1-26. [PMID: 26335630 PMCID: PMC4712230 DOI: 10.1007/s00101-015-0071-1] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The German Society of Anesthesiology and Intensive Care Medicine (DGAI) commissioneda revision of the S2 guidelines on "positioning therapy for prophylaxis or therapy of pulmonary function disorders" from 2008. Because of the increasing clinical and scientificrelevance the guidelines were extended to include the issue of "early mobilization"and the following main topics are therefore included: use of positioning therapy and earlymobilization for prophylaxis and therapy of pulmonary function disorders, undesired effects and complications of positioning therapy and early mobilization as well as practical aspects of the use of positioning therapy and early mobilization. These guidelines are the result of a systematic literature search and the subsequent critical evaluation of the evidence with scientific methods. The methodological approach for the process of development of the guidelines followed the requirements of evidence-based medicine, as defined as the standard by the Association of the Scientific Medical Societies in Germany. Recently published articles after 2005 were examined with respect to positioning therapy and the recently accepted aspect of early mobilization incorporates all literature published up to June 2014.
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Affiliation(s)
- Th Bein
- Clinic for Anaesthesiology, University Hospital Regensburg, 93042, Regensburg, Germany.
| | - M Bischoff
- Clinic for Anaesthesiology, University Hospital Regensburg, 93042, Regensburg, Germany
| | - U Brückner
- Physiotherapy Department, Clinic Donaustauf, Centre for Pneumology, 93093, Donaustauf, Germany
| | - K Gebhardt
- Clinic for Anaesthesiology, University Hospital Regensburg, 93042, Regensburg, Germany
| | - D Henzler
- Clinic for Anaesthesiology, Surgical Intensive Care Medicine, Emergency Care Medicine, Pain Management, Klinikum Herford, 32049, Herford, Germany
| | - C Hermes
- HELIOS Clinic Siegburg, 53721, Siegburg, Germany
| | - K Lewandowski
- Clinic for Anaesthesiology, Intensive Care Medicine and Pain Management, Elisabeth Hospital Essen, 45138, Essen, Germany
| | - M Max
- Centre Hospitalier, Soins Intensifs Polyvalents, 1210, Luxembourg, Luxemburg
| | - M Nothacker
- Association of Scientific Medical Societies (AWMF), 35043, Marburg, Germany
| | - Th Staudinger
- University Hospital for Internal Medicine I, Medical University of Wien, General Hospital of Vienna, 1090, Vienna, Austria
| | - M Tryba
- Clinic for Anaesthesiology, Intensive Care Medicine and Pain Management, Klinikum Kassel, 34125, Kassel, Germany
| | - S Weber-Carstens
- Clinic for Anaesthesiology and Surgical Intensive Care Medicine, Charité Universitätsmedizin Berlin, Campus Virchow Klinikum, 13353, Berlin, Germany
| | - H Wrigge
- Clinic and Policlinic for Anaesthesiology and Intensive Care Medicine, University Hospital Leipzig, 04103, Leipzig, Germany
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