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Murali M, Ni M, Karbing DS, Rees SE, Komorowski M, Marshall D, Ramnarayan P, Patel BV. Clinical practice, decision-making, and use of clinical decision support systems in invasive mechanical ventilation: a narrative review. Br J Anaesth 2024; 133:164-177. [PMID: 38637268 PMCID: PMC11213991 DOI: 10.1016/j.bja.2024.03.011] [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: 11/24/2023] [Revised: 02/29/2024] [Accepted: 03/07/2024] [Indexed: 04/20/2024] Open
Abstract
Invasive mechanical ventilation is a key supportive therapy for patients on intensive care. There is increasing emphasis on personalised ventilation strategies. Clinical decision support systems (CDSS) have been developed to support this. We conducted a narrative review to assess evidence that could inform device implementation. A search was conducted in MEDLINE (Ovid) and EMBASE. Twenty-nine studies met the inclusion criteria. Role allocation is well described, with interprofessional collaboration dependent on culture, nurse:patient ratio, the use of protocols, and perception of responsibility. There were no descriptions of process measures, quality metrics, or clinical workflow. Nurse-led weaning is well-described, with factors grouped by patient, nurse, and system. Physician-led weaning is heterogenous, guided by subjective and objective information, and 'gestalt'. No studies explored decision-making with CDSS. Several explored facilitators and barriers to implementation, grouped by clinician (facilitators: confidence using CDSS, retaining decision-making ownership; barriers: undermining clinician's role, ambiguity moving off protocol), intervention (facilitators: user-friendly interface, ease of workflow integration, minimal training requirement; barriers: increased documentation time), and organisation (facilitators: system-level mandate; barriers: poor communication, inconsistent training, lack of technical support). One study described factors that support CDSS implementation. There are gaps in our understanding of ventilation practice. A coordinated approach grounded in implementation science is required to support CDSS implementation. Future research should describe factors that guide clinical decision-making throughout mechanical ventilation, with and without CDSS, map clinical workflow, and devise implementation toolkits. Novel research design analogous to a learning organisation, that considers the commercial aspects of device design, is required.
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Affiliation(s)
- Mayur Murali
- Division of Anaesthetics, Pain Medicine & Intensive Care, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, London, UK.
| | - Melody Ni
- NIHR London In Vitro Diagnostics Cooperative, London, UK
| | - Dan S Karbing
- Respiratory and Critical Care Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Stephen E Rees
- Respiratory and Critical Care Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Matthieu Komorowski
- Division of Anaesthetics, Pain Medicine & Intensive Care, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - Dominic Marshall
- Division of Anaesthetics, Pain Medicine & Intensive Care, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - Padmanabhan Ramnarayan
- Division of Anaesthetics, Pain Medicine & Intensive Care, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, London, UK; Imperial Centre for Paediatrics and Child Health, London, UK
| | - Brijesh V Patel
- Division of Anaesthetics, Pain Medicine & Intensive Care, Department of Surgery & Cancer, Faculty of Medicine, Imperial College London, London, UK; Department of Anaesthesia & Critical Care, Royal Brompton Hospital, London, UK
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Guillamet CV, Kollef MH. Is Zero Ventilator-Associated Pneumonia Achievable? Updated Practical Approaches to Ventilator-Associated Pneumonia Prevention. Infect Dis Clin North Am 2024; 38:65-86. [PMID: 38040518 DOI: 10.1016/j.idc.2023.11.001] [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: 12/03/2023]
Abstract
Ventilator-associated pneumonia (VAP) remains a significant clinical entity with reported incidence rates of 7% to 15%. Given the considerable adverse consequences associated with this infection, VAP prevention became a core measure required in most US hospitals. Many institutions took pride in implementing effective VAP prevention bundles that combined at least head of bed elevation, hand hygiene, chlorhexidine oral care, and subglottic drainage. Spontaneous breathing and awakening trials have also consistently been shown to shorten the duration of mechanical ventilation and secondarily reduce the occurrence of VAP.
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Affiliation(s)
| | - Marin H Kollef
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, MO, USA.
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3
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王 永, 马 嵩, 胡 天, 马 德, 连 宪, 王 帅, 张 继. [Expert knowledge-based strategies for ventilator parameter setting and stepless adaptive adjustment]. SHENG WU YI XUE GONG CHENG XUE ZA ZHI = JOURNAL OF BIOMEDICAL ENGINEERING = SHENGWU YIXUE GONGCHENGXUE ZAZHI 2023; 40:945-952. [PMID: 37879924 PMCID: PMC10600427 DOI: 10.7507/1001-5515.202209015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 08/31/2023] [Indexed: 10/27/2023]
Abstract
The setting and adjustment of ventilator parameters need to rely on a large amount of clinical data and rich experience. This paper explored the problem of difficult decision-making of ventilator parameters due to the time-varying and sudden changes of clinical patient's state, and proposed an expert knowledge-based strategies for ventilator parameter setting and stepless adaptive adjustment based on fuzzy control rule and neural network. Based on the method and the real-time physiological state of clinical patients, we generated a mechanical ventilation decision-making solution set with continuity and smoothness, and automatically provided explicit parameter adjustment suggestions to medical personnel. This method can solve the problems of low control precision and poor dynamic quality of the ventilator's stepwise adjustment, handle multi-input control decision problems more rationally, and improve ventilation comfort for patients.
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Affiliation(s)
- 永言 王
- 山东大学 机械工程学院(济南 250061)School of Mechanical Engineering, Shandong University, Jinan 250061, P. R. China
- 高效洁净机械制造教育部重点实验室(济南 250061)Key Laboratory of High Efficiency and Clean Mechanical Manufacture at Shandong University, Ministry of Education, Jinan 250061, P. R. China
- 机械工程国家级实验教学示范中心(济南 250061)National Demonstration Center for Experimental Mechanical Engineering Education, Jinan 250061, P. R. China
| | - 嵩华 马
- 山东大学 机械工程学院(济南 250061)School of Mechanical Engineering, Shandong University, Jinan 250061, P. R. China
- 高效洁净机械制造教育部重点实验室(济南 250061)Key Laboratory of High Efficiency and Clean Mechanical Manufacture at Shandong University, Ministry of Education, Jinan 250061, P. R. China
- 机械工程国家级实验教学示范中心(济南 250061)National Demonstration Center for Experimental Mechanical Engineering Education, Jinan 250061, P. R. China
| | - 天亮 胡
- 山东大学 机械工程学院(济南 250061)School of Mechanical Engineering, Shandong University, Jinan 250061, P. R. China
- 高效洁净机械制造教育部重点实验室(济南 250061)Key Laboratory of High Efficiency and Clean Mechanical Manufacture at Shandong University, Ministry of Education, Jinan 250061, P. R. China
- 机械工程国家级实验教学示范中心(济南 250061)National Demonstration Center for Experimental Mechanical Engineering Education, Jinan 250061, P. R. China
| | - 德东 马
- 山东大学 机械工程学院(济南 250061)School of Mechanical Engineering, Shandong University, Jinan 250061, P. R. China
- 高效洁净机械制造教育部重点实验室(济南 250061)Key Laboratory of High Efficiency and Clean Mechanical Manufacture at Shandong University, Ministry of Education, Jinan 250061, P. R. China
| | - 宪辉 连
- 山东大学 机械工程学院(济南 250061)School of Mechanical Engineering, Shandong University, Jinan 250061, P. R. China
- 高效洁净机械制造教育部重点实验室(济南 250061)Key Laboratory of High Efficiency and Clean Mechanical Manufacture at Shandong University, Ministry of Education, Jinan 250061, P. R. China
- 机械工程国家级实验教学示范中心(济南 250061)National Demonstration Center for Experimental Mechanical Engineering Education, Jinan 250061, P. R. China
| | - 帅 王
- 山东大学 机械工程学院(济南 250061)School of Mechanical Engineering, Shandong University, Jinan 250061, P. R. China
- 高效洁净机械制造教育部重点实验室(济南 250061)Key Laboratory of High Efficiency and Clean Mechanical Manufacture at Shandong University, Ministry of Education, Jinan 250061, P. R. China
- 机械工程国家级实验教学示范中心(济南 250061)National Demonstration Center for Experimental Mechanical Engineering Education, Jinan 250061, P. R. China
| | - 继国 张
- 山东大学 机械工程学院(济南 250061)School of Mechanical Engineering, Shandong University, Jinan 250061, P. R. China
- 高效洁净机械制造教育部重点实验室(济南 250061)Key Laboratory of High Efficiency and Clean Mechanical Manufacture at Shandong University, Ministry of Education, Jinan 250061, P. R. China
- 机械工程国家级实验教学示范中心(济南 250061)National Demonstration Center for Experimental Mechanical Engineering Education, Jinan 250061, P. R. China
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Grissom CK, Holubkov R, Carpenter L, Hanna B, Jacobs JR, Jones C, Knighton AJ, Leither L, Lisonbee D, Peltan ID, Winberg C, Wolfe D, Srivastava R. Implementation of coordinated spontaneous awakening and breathing trials using telehealth-enabled, real-time audit and feedback for clinician adherence (TEACH): a type II hybrid effectiveness-implementation cluster-randomized trial. Implement Sci 2023; 18:45. [PMID: 37735443 PMCID: PMC10515061 DOI: 10.1186/s13012-023-01303-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/09/2023] [Indexed: 09/23/2023] Open
Abstract
BACKGROUND Intensive care unit (ICU) patients on mechanical ventilation often require sedation and analgesia to improve comfort and decrease pain. Prolonged sedation and analgesia, however, may increase time on mechanical ventilation, risk for ventilator associated pneumonia, and delirium. Coordinated interruptions in sedation [spontaneous awakening trials (SATs)] and spontaneous breathing trials (SBTs) increase ventilator-free days and improve mortality. Coordination of SATs and SBTs is difficult with substantial implementation barriers due to difficult-to-execute sequencing between nurses and respiratory therapists. Telehealth-enabled remote care has the potential to overcome these barriers and improve coordinated SAT and SBT adherence by enabling proactive high-risk patient monitoring, surveillance, and real-time assistance to frontline ICU teams. METHODS The telehealth-enabled, real-time audit and feedback for clinician adherence (TEACH) study will determine whether adding a telehealth augmented real-time audit and feedback to a usual supervisor-led audit and feedback intervention will yield higher coordinated SAT and SBT adherence and more ventilator-free days in mechanically ventilated patients than a usual supervisor-led audit and feedback intervention alone in a type II hybrid effectiveness-implementation cluster-randomized clinical trial in 12 Intermountain Health hospitals with 15 ICUs. In the active comparator control group (six hospitals), the only intervention is the usual supervisor-led audit and feedback implementation. The telehealth-enabled support (TEACH) intervention in six hospitals adds real-time identification of patients eligible for a coordinated SAT and SBT and consultative input from telehealth respiratory therapists, nurses, and physicians to the bedside clinicians to promote adherence including real-time assistance with execution. All intubated and mechanically ventilated patients ≥ 16 years of age are eligible for enrollment except for patients who die on the day of intubation or have preexisting brain death. Based on preliminary power analyses, we plan a 36-month intervention period that includes a 90-day run-in period. Estimated enrollment in the final analysis is up to 9900 mechanically ventilated patients over 33 months. DISCUSSION The TEACH study will enhance implementation science by providing insight into how a telehealth intervention augmenting a usual audit and feedback implementation may improve adherence to coordinated SAT and SBT and increase ventilator-free days. TRIAL REGISTRATION Clinicaltrials.gov, NCT05141396 , registered 12/02/2021.
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Affiliation(s)
- Colin K Grissom
- Department of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT, 84107, USA.
- Division of Pulmonary and Critical Care, Department of Medicine, University of Utah, Salt Lake City, UT, USA.
- Critical Care Operations, Intermountain Health, Canyons Region, Murray, UT, USA.
| | - Richard Holubkov
- Division of Pediatric Critical Care, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Lori Carpenter
- Respiratory Care, Intermountain Health, Canyons Region, Salt Lake City, UT, USA
| | - Bridgett Hanna
- Healthcare Delivery Institute, Intermountain Health, Salt Lake City, UT, USA
| | - Jason R Jacobs
- Department of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT, 84107, USA
| | - Christopher Jones
- Critical Care Operations, Intermountain Health, Canyons Region, Murray, UT, USA
| | - Andrew J Knighton
- Healthcare Delivery Institute, Intermountain Health, Salt Lake City, UT, USA
| | - Lindsay Leither
- Department of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT, 84107, USA
| | - Dee Lisonbee
- Healthcare Delivery Institute, Intermountain Health, Salt Lake City, UT, USA
| | - Ithan D Peltan
- Department of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, UT, 84107, USA
- Division of Pulmonary and Critical Care, Department of Medicine, University of Utah, Salt Lake City, UT, USA
| | - Carrie Winberg
- Respiratory Care, Intermountain Health, Canyons Region, Salt Lake City, UT, USA
| | - Doug Wolfe
- Healthcare Delivery Institute, Intermountain Health, Salt Lake City, UT, USA
| | - Rajendu Srivastava
- Healthcare Delivery Institute, Intermountain Health, Salt Lake City, UT, USA
- Division of Pediatric Hospital Medicine, Department of Pediatrics, University of Utah and Primary Children's Hospital, Salt Lake City, UT, USA
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Bencsik CM, Kramer AH, Couillard P, MacKay M, Kromm JA. Postarrest Neuroprognostication: Practices and Opinions of Canadian Physicians. Can J Neurol Sci 2023:1-12. [PMID: 37489539 DOI: 10.1017/cjn.2023.261] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
BACKGROUND Objective, evidence-based neuroprognostication of postarrest patients is crucial to avoid inappropriate withdrawal of life-sustaining therapies or prolonged, invasive, and costly therapies that could perpetuate suffering when there is no chance of an acceptable recovery. Postarrest prognostication guidelines exist; however, guideline adherence and practice variability are unknown. OBJECTIVE To investigate Canadian practices and opinions regarding assessment of neurological prognosis in postarrest patients. METHODS An anonymous electronic survey was distributed to physicians who care for adult postarrest patients. RESULTS Of the 134 physicians who responded to the survey, 63% had no institutional protocols for neuroprognostication. While the use of targeted temperature management did not affect the timing of neuroprognostication, an increasing number of clinical findings suggestive of a poor prognosis affected the timing of when physicians were comfortable concluding patients had a poor prognosis. Variability existed in what factors clinicians' thought were confounders. Physicians identified bilaterally absent pupillary light reflexes (85%), bilaterally absent corneal reflexes (80%), and status myoclonus (75%) as useful in determining poor prognosis. Computed tomography, magnetic resonance imaging, and spot electroencephalography were the most useful and accessible tests. Somatosensory evoked potentials were useful, but logistically challenging. Serum biomarkers were unavailable at most centers. Most (79%) physicians agreed ≥2 definitive findings on neurologic exam, electrophysiologic tests, neuroimaging, and/or biomarkers are required to determine a poor prognosis with a high degree of certainty. Distress during the process of neuroprognostication was reported by 70% of physicians and 51% request a second opinion from an external expert. CONCLUSION Significant variability exists in post-cardiac arrest neuroprognostication practices among Canadian physicians.
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Affiliation(s)
- Caralyn M Bencsik
- Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Alberta Health Services, Calgary, AB, Canada
| | - Andreas H Kramer
- Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Alberta Health Services, Calgary, AB, Canada
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Philippe Couillard
- Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Alberta Health Services, Calgary, AB, Canada
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | | | - Julie A Kromm
- Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Alberta Health Services, Calgary, AB, Canada
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
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Balajthy A, Balazs G, Kovacs T, Belteki G. Synchronized intermittent mandatory ventilation with volume guarantee and pressure support in neonates: Detailed analysis of ventilator parameters. Pediatr Pulmonol 2023; 58:1703-1710. [PMID: 36929855 DOI: 10.1002/ppul.26384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 02/28/2023] [Accepted: 03/04/2023] [Indexed: 03/18/2023]
Abstract
OBJECTIVE To analyse the relationship between peak inflating pressure, expired tidal volume, respiratory rate, and inspiratory time of volume-guaranteed ventilator inflations and pressure-supported spontaneous breaths during synchronized intermittent positive pressure mode with volume guarantee and pressure support (SIMV-VG-PS) in neonates. METHODS Ventilator parameters were downloaded every second from 16 babies ventilated with SIMV-VG-PS mode using Dräger Babylog VN500 ventilators over 137 days. Transcutaneous carbon dioxide (tcCO2 ) data were also collected. Data were computationally analysed using Python. The average of each ventilator parameter was determined during each minute separately for ventilator inflations and for spontaneous breaths. These values were compared and their effect on tcCO2 levels was also analysed. RESULTS The relationship between the peak inflating pressure of the volume guaranteed inflations (PIPVG ) and pressure-supported spontaneous breaths (PIPPS ) was highly variable. The PIPPS /PIPVG ratio differed significantly from the value (0.66) targeted by clinicians (group median: 0.80, range: 0.50-1.00). PIPPS frequently exceeded PIPVG . When PIPPS /PIPVG was >0.66, the expired tidal volume and the rate of the pressure-supported spontaneous breaths were also significantly (p < 0.0001) higher, but there was no difference in tcCO2 levels. The flow-cycled spontaneous breaths had significantly shorter inspiratory times than ventilator inflations. CONCLUSIONS During SIMV-VG-PS it is difficult to ensure a pressure support level proportionate to the inflating pressure of ventilator inflations and to achieve the stability of tidal volumes.
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Affiliation(s)
- Andras Balajthy
- Department of Pediatrics, Division of Neonatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gergely Balazs
- Department of Pediatrics, Division of Neonatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Tamas Kovacs
- Department of Pediatrics, Division of Neonatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Gusztav Belteki
- Neonatal Intensive Care Unit, The Rosie Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
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7
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Kanal V, Pathmanathan P, Hahn JO, Kramer G, Scully C, Bighamian R. Development and validation of a mathematical model of heart rate response to fluid perturbation. Sci Rep 2022; 12:21463. [PMID: 36509856 PMCID: PMC9744837 DOI: 10.1038/s41598-022-25891-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/06/2022] [Indexed: 12/15/2022] Open
Abstract
Physiological closed-loop controlled (PCLC) medical devices monitor and automatically adjust the patient's condition by using physiological variables as feedback, ideally with minimal human intervention to achieve the target levels set by a clinician. PCLC devices present a challenge when it comes to evaluating their performance, where conducting large clinical trials can be expensive. Virtual physiological patients simulated by validated mathematical models can be utilized to obtain pre-clinical evidence of safety and assess the performance of the PCLC medical device during normal and worst-case conditions that are unlikely to happen in a limited clinical trial. A physiological variable that plays a major role during fluid resuscitation is heart rate (HR). For in silico assessment of PCLC medical devices regarding fluid perturbation, there is currently no mathematical model of HR validated in terms of its predictive capability performance. This paper develops and validates a mathematical model of HR response using data collected from sheep subjects undergoing hemorrhage and fluid infusion. The model proved to be accurate in estimating the HR response to fluid perturbation, where averaged between 21 calibration datasets, the fitting performance showed a normalized root mean square error (NRMSE) of [Formula: see text]. The model was also evaluated in terms of model predictive capability performance via a leave-one-out procedure (21 subjects) and an independent validation dataset (6 subjects). Two different virtual cohort generation tools were used in each validation analysis. The generated envelope of virtual subjects robustly met the defined acceptance criteria, in which [Formula: see text] of the testing datasets presented simulated HR patterns that were within a deviation of 50% from the observed data. In addition, out of 16000 and 18522 simulated subjects for the leave-one-out and independent datasets, the model was able to generate at least one virtual subject that was close to the real subject within an error margin of [Formula: see text] and [Formula: see text] NRMSE, respectively. In conclusion, the model can generate valid virtual HR physiological responses to fluid perturbation and be incorporated into future non-clinical simulated testing setups for assessing PCLC devices intended for fluid resuscitation.
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Affiliation(s)
- Varun Kanal
- grid.417587.80000 0001 2243 3366Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, United States Food and Drug Administration, Silver Spring, MD USA
| | - Pras Pathmanathan
- grid.417587.80000 0001 2243 3366Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, United States Food and Drug Administration, Silver Spring, MD USA
| | - Jin-Oh Hahn
- grid.164295.d0000 0001 0941 7177Department of Mechanical Engineering, University of Maryland, College Park, MD USA
| | - George Kramer
- grid.176731.50000 0001 1547 9964Department of Anesthesiology, The University of Texas Medical Branch, Galveston, TX USA
| | - Christopher Scully
- grid.417587.80000 0001 2243 3366Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, United States Food and Drug Administration, Silver Spring, MD USA
| | - Ramin Bighamian
- grid.417587.80000 0001 2243 3366Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, United States Food and Drug Administration, Silver Spring, MD USA
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Bickenbach J, Fritsch S. [Weaning from invasive ventilation : Challenges in the clinical routine]. DIE ANAESTHESIOLOGIE 2022; 71:910-920. [PMID: 36418440 DOI: 10.1007/s00101-022-01219-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Modern intensive care medicine is caught between the conflicting demands of an efficient but also increasingly more technical intensive care treatment with numerous therapeutic options and, at the same time, an ageing society with increasing morbidity. This is reflected, among other things, in an increasing number of ventilated patients in intensive care units and an increasing proportion of patients for whom ventilation cannot easily be discontinued. Weaning from a ventilator, which can account for more than 50% of the total ventilation time, therefore plays a central role in this process. This main topic article presents the need for strategically wise and holistic actions to minimize the consequences of invasive mechanical ventilation for patients. An attempt is made to shed more light on individual aspects of the ventilation weaning process with high relevance for clinical practice. Especially for prolonged weaning from ventilation, many more concepts are needed than simply ending ventilation.
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Affiliation(s)
- Johannes Bickenbach
- Klinik für Operative Intensivmedizin und Intermediate Care, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland.
| | - Sebastian Fritsch
- Klinik für Operative Intensivmedizin und Intermediate Care, Uniklinik RWTH Aachen, Pauwelsstr. 30, 52074, Aachen, Deutschland
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Klompas M, Branson R, Cawcutt K, Crist M, Eichenwald EC, Greene LR, Lee G, Maragakis LL, Powell K, Priebe GP, Speck K, Yokoe DS, Berenholtz SM. Strategies to prevent ventilator-associated pneumonia, ventilator-associated events, and nonventilator hospital-acquired pneumonia in acute-care hospitals: 2022 Update. Infect Control Hosp Epidemiol 2022; 43:687-713. [PMID: 35589091 PMCID: PMC10903147 DOI: 10.1017/ice.2022.88] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The purpose of this document is to highlight practical recommendations to assist acute care hospitals to prioritize and implement strategies to prevent ventilator-associated pneumonia (VAP), ventilator-associated events (VAE), and non-ventilator hospital-acquired pneumonia (NV-HAP) in adults, children, and neonates. This document updates the Strategies to Prevent Ventilator-Associated Pneumonia in Acute Care Hospitals published in 2014. This expert guidance document is sponsored by the Society for Healthcare Epidemiology (SHEA), and is the product of a collaborative effort led by SHEA, the Infectious Diseases Society of America, the American Hospital Association, the Association for Professionals in Infection Control and Epidemiology, and The Joint Commission, with major contributions from representatives of a number of organizations and societies with content expertise.
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Affiliation(s)
- Michael Klompas
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts
- Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Richard Branson
- Department of Surgery, University of Cincinnati Medicine, Cincinnati, Ohio
| | - Kelly Cawcutt
- Department of Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Matthew Crist
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Eric C Eichenwald
- Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Linda R Greene
- Highland Hospital, University of Rochester, Rochester, New York
| | - Grace Lee
- Stanford University School of Medicine, Palo Alto, California
| | - Lisa L Maragakis
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Krista Powell
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Gregory P Priebe
- Department of Anesthesiology, Critical Care and Pain Medicine; Department of Pediatrics, Boston Children's Hospital, Boston, Massachusetts; and Harvard Medical School, Boston, Massachusetts
| | - Kathleen Speck
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Deborah S Yokoe
- Department of Medicine, University of California San Francisco, San Francisco, California
| | - Sean M Berenholtz
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Health Policy & Management, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland
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10
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Burns KEA, Agarwal A, Bosma KJ, Chaudhuri D, Girard TD. Liberation from Mechanical Ventilation: Established and New Insights. Semin Respir Crit Care Med 2022; 43:461-470. [PMID: 35760299 DOI: 10.1055/s-0042-1747929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A substantial proportion of critically ill patients require ventilator support with the majority requiring invasive mechanical ventilation. Timely and safe liberation from invasive mechanical ventilation is a critical aspect of patient care in the intensive care unit (ICU) and is a top research priority for patients and clinicians. In this article, we discuss how to (1) identify candidates for liberation from mechanical ventilation, (2) conduct spontaneous breathing trials (SBTs), and (3) optimize patients for liberation from mechanical ventilation. We also discuss the roles for (4) extubation to noninvasive ventilation and (5) newer modes of mechanical ventilation during liberation from mechanical ventilation. We conclude that, though substantial progress has been made in identifying patients who are likely to be liberated (e.g., through the use of SBTs) and management strategies that speed liberation from the ventilator (e.g., protocolized SBTs, lighter sedation, and early mobilization), many important questions regarding liberation from mechanical ventilation in clinical practice remain unanswered.
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Affiliation(s)
- Karen E A Burns
- Interdepartmental Division of Critical Care Medicine, Department of Medicine, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Departments of Critical Care and Medicine, Unity Health Toronto, St Michael's Hospital, Toronto, Ontario, Canada.,Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.,Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada
| | - Arnav Agarwal
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.,Division of General Internal Medicine, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Karen J Bosma
- Division of Critical Care Medicine, Department of Medicine, Schulich School of Medicine and Dentistry, Western University, and London Health Sciences Centre, London, Ontario, Canada
| | - Dipayan Chaudhuri
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.,Departments of Critical Care Medicine and Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Timothy D Girard
- The Clinical Research, Investigation, and Systems Modeling of Acute Illness (CRISMA) Center, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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11
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Shaaban L, Abdeen A, Saleh HM, Mahran SA, Farghaly S. Early rehabilitation program and weaning outcomes in critically ill chronic obstructed airway disease patients: a randomized trial. THE EGYPTIAN JOURNAL OF BRONCHOLOGY 2022. [DOI: 10.1186/s43168-022-00128-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
To compare the effectiveness of early rehabilitation program on mechanical ventilated COPD patient in RICU to those using current usual care regarding diaphragm function and weaning outcomes.
Methods
The study was a randomized controlled trial. It included 108 newly admitted COPD patients to RICU, Chest Department, Assiut University Hospital, Egypt, in the period from June 2018 to May 2020. They were divided into two groups: group Ι received the usual care plus pulmonary rehabilitation program, and group II received the usual care alone. The outcomes (MV duration, rates of successful weaning, diaphragm function, and lengths of hospital and ICU stay) were recorded and evaluated. The data was analyzed using Student t-test, Mann–Whitney U-test, Wilcoxon signed-rank test, chi-square (χ2) test or Fisher Exact test, receiver operating characteristics (ROC) curve, and logistic regression analysis.
Results
One-hundred and eight COPD patients were included. Early rehabilitation program for COPD patients in the ICU shortened the duration of their MV, increases the rates of successful weaning and decreases 30-day mortality, and shortened the duration of their ICU and hospital stays, as compared to COPD patients who received usual care.
Conclusions
Management of COPD patients with early rehabilitation program is associated with better outcome with improvement of the quality of life of COPD patients.
Trial registration
Clinical trial.gov: NCT03253380
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12
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Umbrello M, Antonucci E, Muttini S. Neurally Adjusted Ventilatory Assist in Acute Respiratory Failure-A Narrative Review. J Clin Med 2022; 11:jcm11071863. [PMID: 35407471 PMCID: PMC9000024 DOI: 10.3390/jcm11071863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/10/2022] [Accepted: 03/25/2022] [Indexed: 02/08/2023] Open
Abstract
Maintaining spontaneous breathing has both potentially beneficial and deleterious consequences in patients with acute respiratory failure, depending on the balance that can be obtained between the protecting and damaging effects on the lungs and the diaphragm. Neurally adjusted ventilatory assist (NAVA) is an assist mode, which supplies the respiratory system with a pressure proportional to the integral of the electrical activity of the diaphragm. This proportional mode of ventilation has the theoretical potential to deliver lung- and respiratory-muscle-protective ventilation by preserving the physiologic defense mechanisms against both lung overdistention and ventilator overassistance, as well as reducing the incidence of diaphragm disuse atrophy while maintaining patient–ventilator synchrony. This narrative review presents an overview of NAVA technology, its basic principles, the different methods to set the assist level and the findings of experimental and clinical studies which focused on lung and diaphragm protection, machine–patient interaction and preservation of breathing pattern variability. A summary of the findings of the available clinical trials which investigate the use of NAVA in acute respiratory failure will also be presented and discussed.
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13
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Rees SE, Spadaro S, Dalla Corte F, Dey N, Brohus JB, Scaramuzzo G, Lodahl D, Winding RR, Volta CA, Karbing DS. Transparent decision support for mechanical ventilation using visualization of clinical preferences. Biomed Eng Online 2022; 21:5. [PMID: 35073928 PMCID: PMC8785460 DOI: 10.1186/s12938-021-00974-5] [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: 08/31/2021] [Accepted: 12/27/2021] [Indexed: 12/02/2022] Open
Abstract
Background Systems aiding in selecting the correct settings for mechanical ventilation should visualize patient information at an appropriate level of complexity, so as to reduce information overload and to make reasoning behind advice transparent. Metaphor graphics have been applied to this effect, but these have largely been used to display diagnostic and physiologic information, rather than the clinical decision at hand. This paper describes how the conflicting goals of mechanical ventilation can be visualized and applied in making decisions. Data from previous studies are analyzed to assess whether visual patterns exist which may be of use to the clinical decision maker. Materials and methods The structure and screen visualizations of a commercial clinical decision support system (CDSS) are described, including the visualization of the conflicting goals of mechanical ventilation represented as a hexagon. Retrospective analysis is performed on 95 patients from 2 previous clinical studies applying the CDSS, to identify repeated patterns of hexagon symbols. Results Visual patterns were identified describing optimal ventilation, over and under ventilation and pressure support, and over oxygenation, with these patterns identified for both control and support modes of mechanical ventilation. Numerous clinical examples are presented for these patterns illustrating their potential interpretation at the bedside. Conclusions Visual patterns can be identified which describe the trade-offs required in mechanical ventilation. These may have potential to reduce information overload and help in simple and rapid identification of sub-optimal settings. Supplementary Information The online version contains supplementary material available at 10.1186/s12938-021-00974-5.
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14
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Kampolis CF, Mermiri M, Mavrovounis G, Koutsoukou A, Loukeri AA, Pantazopoulos I. Comparison of advanced closed-loop ventilation modes with pressure support ventilation for weaning from mechanical ventilation in adults: A systematic review and meta-analysis. J Crit Care 2021; 68:1-9. [PMID: 34839229 DOI: 10.1016/j.jcrc.2021.11.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/26/2021] [Accepted: 11/14/2021] [Indexed: 12/29/2022]
Abstract
PURPOSE To compare neurally adjusted ventilatory assist (NAVA), proportional assist ventilation (PAV), adaptive support ventilation (ASV) and Smartcare pressure support (Smartcare/PS) with standard pressure support ventilation (PSV) regarding their effectiveness for weaning critically ill adults from invasive mechanical ventilation (IMV). METHODS Electronic databases were searched to identify parallel-group randomized controlled trials (RCTs) comparing NAVA, PAV, ASV, or Smartcare/PS with PSV, in adult patients under IMV through July 28, 2021. Primary outcome was weaning success. Secondary outcomes included weaning time, total MV duration, reintubation or use of non-invasive MV (NIMV) within 48 h after extubation, in-hospital and intensive care unit (ICU) mortality, in-hospital and ICU length of stay (LOS) (PROSPERO registration No:CRD42021270299). RESULTS Twenty RCTs were finally included. Compared to PSV, NAVA was associated with significantly lower risk for in-hospital and ICU death and lower requirements for post-extubation NIMV. Moreover, PAV showed significant advantage over PSV in terms of weaning rates, MV duration and ICU LOS. No significant differences were found between ASV or Smart care/PS and PSV. CONCLUSIONS Moderate certainty evidence suggest that PAV increases weaning success rates, shortens MV duration and ICU LOS compared to PSV. It is also noteworthy that NAVA seems to improve in-hospital and ICU survival.
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Affiliation(s)
- Christos F Kampolis
- Department of Emergency Medicine, "Hippokration" General Hospital of Athens, Athens, Greece.
| | - Maria Mermiri
- Department of Emergency Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, General University Hospital of Larissa, Mezourlo 41110, Larissa, Greece
| | - Georgios Mavrovounis
- Department of Emergency Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, General University Hospital of Larissa, Mezourlo 41110, Larissa, Greece
| | - Antonia Koutsoukou
- Intensive Care Unit, 1st Department of Respiratory Medicine, "Sotiria" Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Ioannis Pantazopoulos
- Department of Emergency Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, General University Hospital of Larissa, Mezourlo 41110, Larissa, Greece
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15
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Haudebourg AF, Maraffi T, Tuffet S, Perier F, de Prost N, Razazi K, Mekontso Dessap A, Carteaux G. Refractory ineffective triggering during pressure support ventilation: effect of proportional assist ventilation with load-adjustable gain factors. Ann Intensive Care 2021; 11:147. [PMID: 34669080 PMCID: PMC8527439 DOI: 10.1186/s13613-021-00935-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 10/07/2021] [Indexed: 12/21/2022] Open
Abstract
Background Ineffective triggering is frequent during pressure support ventilation (PSV) and may persist despite ventilator adjustment, leading to refractory asynchrony. We aimed to assess the effect of proportional assist ventilation with load-adjustable gain factors (PAV+) on the occurrence of refractory ineffective triggering. Design Observational assessment followed by prospective cross-over physiological study. Setting Academic medical ICU. Patients Ineffective triggering was detected during PSV by a twice-daily inspection of the ventilator’s screen. The impact of pressure support level (PSL) adjustments on the occurrence of asynchrony was recorded. Patients experiencing refractory ineffective triggering, defined as persisting asynchrony at the lowest tolerated PSL, were included in the physiological study. Interventions Physiological study: Flow, airway, and esophageal pressures were continuously recorded during 10 min under PSV with the lowest tolerated PSL, and then under PAV+ with the gain adjusted to target a muscle pressure between 5 and 10 cmH2O. Measurements Primary endpoint was the comparison of asynchrony index between PSV and PAV+ after PSL and gain adjustments. Results Among 36 patients identified having ineffective triggering under PSV, 21 (58%) exhibited refractory ineffective triggering. The lowest tolerated PSL was higher in patients with refractory asynchrony as compared to patients with non-refractory ineffective triggering. Twelve out of the 21 patients with refractory ineffective triggering were included in the physiological study. The median lowest tolerated PSL was 17 cmH2O [12–18] with a PEEP of 7 cmH2O [5–8] and FiO2 of 40% [39–42]. The median gain during PAV+ was 73% [65–80]. The asynchrony index was significantly lower during PAV+ than PSV (2.7% [1.0–5.4] vs. 22.7% [10.3–40.1], p < 0.001) and consistently decreased in every patient with PAV+. Esophageal pressure–time product (PTPes) did not significantly differ between the two modes (107 cmH2O/s/min [79–131] under PSV vs. 149 cmH2O/s/min [129–170] under PAV+, p = 0.092), but the proportion of PTPes lost in ineffective triggering was significantly lower with PAV+ (2 cmH2O/s/min [1–6] vs. 8 cmH2O/s/min [3–30], p = 0.012). Conclusions Among patients with ineffective triggering under PSV, PSL adjustment failed to eliminate asynchrony in 58% of them (21 of 36 patients). In these patients with refractory ineffective triggering, switching from PSV to PAV+ significantly reduced or even suppressed the incidence of asynchrony. Supplementary Information The online version contains supplementary material available at 10.1186/s13613-021-00935-0.
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Affiliation(s)
- Anne-Fleur Haudebourg
- Service de Médecine Intensive Réanimation, DHU A-TVB, Hôpitaux Universitaires Henri Mondor - Albert Chenevier, Assistance Publique - Hôpitaux de Paris (AP-HP), Créteil, France. .,Groupe de Recherche Clinique CARMAS, IMRB, Faculté de Médecine de Créteil, Université Paris Est-Créteil, Créteil, France.
| | - Tommaso Maraffi
- Groupe de Recherche Clinique CARMAS, IMRB, Faculté de Médecine de Créteil, Université Paris Est-Créteil, Créteil, France.,Service de Réanimation et Surveillance Continue Adulte, Centre hospitalier intercommunal de Créteil, 94000, Créteil, France
| | - Samuel Tuffet
- Service de Médecine Intensive Réanimation, DHU A-TVB, Hôpitaux Universitaires Henri Mondor - Albert Chenevier, Assistance Publique - Hôpitaux de Paris (AP-HP), Créteil, France.,Groupe de Recherche Clinique CARMAS, IMRB, Faculté de Médecine de Créteil, Université Paris Est-Créteil, Créteil, France.,Institut Mondor de Recherche Biomédicale INSERM 955, Créteil, France
| | - François Perier
- Service de Médecine Intensive Réanimation, DHU A-TVB, Hôpitaux Universitaires Henri Mondor - Albert Chenevier, Assistance Publique - Hôpitaux de Paris (AP-HP), Créteil, France.,Groupe de Recherche Clinique CARMAS, IMRB, Faculté de Médecine de Créteil, Université Paris Est-Créteil, Créteil, France
| | - Nicolas de Prost
- Service de Médecine Intensive Réanimation, DHU A-TVB, Hôpitaux Universitaires Henri Mondor - Albert Chenevier, Assistance Publique - Hôpitaux de Paris (AP-HP), Créteil, France.,Groupe de Recherche Clinique CARMAS, IMRB, Faculté de Médecine de Créteil, Université Paris Est-Créteil, Créteil, France
| | - Keyvan Razazi
- Service de Médecine Intensive Réanimation, DHU A-TVB, Hôpitaux Universitaires Henri Mondor - Albert Chenevier, Assistance Publique - Hôpitaux de Paris (AP-HP), Créteil, France.,Groupe de Recherche Clinique CARMAS, IMRB, Faculté de Médecine de Créteil, Université Paris Est-Créteil, Créteil, France
| | - Armand Mekontso Dessap
- Service de Médecine Intensive Réanimation, DHU A-TVB, Hôpitaux Universitaires Henri Mondor - Albert Chenevier, Assistance Publique - Hôpitaux de Paris (AP-HP), Créteil, France.,Groupe de Recherche Clinique CARMAS, IMRB, Faculté de Médecine de Créteil, Université Paris Est-Créteil, Créteil, France
| | - Guillaume Carteaux
- Service de Médecine Intensive Réanimation, DHU A-TVB, Hôpitaux Universitaires Henri Mondor - Albert Chenevier, Assistance Publique - Hôpitaux de Paris (AP-HP), Créteil, France.,Groupe de Recherche Clinique CARMAS, IMRB, Faculté de Médecine de Créteil, Université Paris Est-Créteil, Créteil, France.,Institut Mondor de Recherche Biomédicale INSERM 955, Créteil, France
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16
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Use of a Multidisciplinary Mechanical Ventilation Weaning Protocol to Improve Patient Outcomes and Empower Staff in a Medical Intensive Care Unit. Dimens Crit Care Nurs 2021; 40:67-74. [PMID: 33961373 DOI: 10.1097/dcc.0000000000000462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Prolonged duration of mechanical ventilation is associated with higher mortality and increased patient complications; conventional physician-directed weaning methods are highly variable and permit significant time that weaning is inefficient and ineffective. OBJECTIVES The primary objective of this quality improvement project was to implement a registered nurse (RN)- and respiratory therapist (RT)-driven mechanical ventilation weaning protocol in a medical intensive care unit (ICU) at a tertiary care academic medical center. METHODS This quality improvement project used a quasi-experimental design with a retrospective usual care group who underwent physician-directed (conventional) weaning (n = 51) and a prospective intervention group who underwent protocol-directed weaning (n = 54). Outcomes included duration of mechanical ventilation, ICU length of stay, reintubation rates, and RN and RT satisfaction with the weaning protocol. RESULTS Patients in the RN- and RT-driven mechanical ventilation weaning protocol group had significantly lower duration of mechanical ventilation (74 vs 152 hours; P = .002) and ICU length of stay (6.7 vs 10.2 days; P = .031). There was no significant difference in reintubation rates between groups. Staff surveys indicate that both RN and RTs were satisfied with the process change. DISCUSSION Implementation of a multidisciplinary mechanical ventilation weaning protocol is a safe and effective way to improve patient outcomes and empower ICU staff.
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17
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Schönhofer B, Geiseler J, Dellweg D, Fuchs H, Moerer O, Weber-Carstens S, Westhoff M, Windisch W. Prolonged Weaning: S2k Guideline Published by the German Respiratory Society. Respiration 2020; 99:1-102. [PMID: 33302267 DOI: 10.1159/000510085] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 01/28/2023] Open
Abstract
Mechanical ventilation (MV) is an essential part of modern intensive care medicine. MV is performed in patients with severe respiratory failure caused by respiratory muscle insufficiency and/or lung parenchymal disease; that is, when other treatments such as medication, oxygen administration, secretion management, continuous positive airway pressure (CPAP), or nasal high-flow therapy have failed. MV is required for maintaining gas exchange and allows more time to curatively treat the underlying cause of respiratory failure. In the majority of ventilated patients, liberation or "weaning" from MV is routine, without the occurrence of any major problems. However, approximately 20% of patients require ongoing MV, despite amelioration of the conditions that precipitated the need for it in the first place. Approximately 40-50% of the time spent on MV is required to liberate the patient from the ventilator, a process called "weaning". In addition to acute respiratory failure, numerous factors can influence the duration and success rate of the weaning process; these include age, comorbidities, and conditions and complications acquired during the ICU stay. According to international consensus, "prolonged weaning" is defined as the weaning process in patients who have failed at least 3 weaning attempts, or require more than 7 days of weaning after the first spontaneous breathing trial (SBT). Given that prolonged weaning is a complex process, an interdisciplinary approach is essential for it to be successful. In specialised weaning centres, approximately 50% of patients with initial weaning failure can be liberated from MV after prolonged weaning. However, the heterogeneity of patients undergoing prolonged weaning precludes the direct comparison of individual centres. Patients with persistent weaning failure either die during the weaning process, or are discharged back to their home or to a long-term care facility with ongoing MV. Urged by the growing importance of prolonged weaning, this Sk2 Guideline was first published in 2014 as an initiative of the German Respiratory Society (DGP), in conjunction with other scientific societies involved in prolonged weaning. The emergence of new research, clinical study findings and registry data, as well as the accumulation of experience in daily practice, have made the revision of this guideline necessary. The following topics are dealt with in the present guideline: Definitions, epidemiology, weaning categories, underlying pathophysiology, prevention of prolonged weaning, treatment strategies in prolonged weaning, the weaning unit, discharge from hospital on MV, and recommendations for end-of-life decisions. Special emphasis was placed on the following themes: (1) A new classification of patient sub-groups in prolonged weaning. (2) Important aspects of pulmonary rehabilitation and neurorehabilitation in prolonged weaning. (3) Infrastructure and process organisation in the care of patients in prolonged weaning based on a continuous treatment concept. (4) Changes in therapeutic goals and communication with relatives. Aspects of paediatric weaning are addressed separately within individual chapters. The main aim of the revised guideline was to summarize both current evidence and expert-based knowledge on the topic of "prolonged weaning", and to use this information as a foundation for formulating recommendations related to "prolonged weaning", not only in acute medicine but also in the field of chronic intensive care medicine. The following professionals served as important addressees for this guideline: intensivists, pulmonary medicine specialists, anaesthesiologists, internists, cardiologists, surgeons, neurologists, paediatricians, geriatricians, palliative care clinicians, rehabilitation physicians, intensive/chronic care nurses, physiotherapists, respiratory therapists, speech therapists, medical service of health insurance, and associated ventilator manufacturers.
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Affiliation(s)
- Bernd Schönhofer
- Klinikum Agnes Karll Krankenhaus, Klinikum Region Hannover, Laatzen, Germany,
| | - Jens Geiseler
- Klinikum Vest, Medizinische Klinik IV: Pneumologie, Beatmungs- und Schlafmedizin, Marl, Germany
| | - Dominic Dellweg
- Fachkrankenhaus Kloster Grafschaft GmbH, Abteilung Pneumologie II, Schmallenberg, Germany
| | - Hans Fuchs
- Universitätsklinikum Freiburg, Zentrum für Kinder- und Jugendmedizin, Neonatologie und Pädiatrische Intensivmedizin, Freiburg, Germany
| | - Onnen Moerer
- Universitätsmedizin Göttingen, Klinik für Anästhesiologie, Göttingen, Germany
| | - Steffen Weber-Carstens
- Charité, Universitätsmedizin Berlin, Klinik für Anästhesiologie mit Schwerpunkt operative Intensivmedizin, Campus Virchow-Klinikum und Campus Mitte, Berlin, Germany
| | - Michael Westhoff
- Lungenklinik Hemer, Hemer, Germany
- Universität Witten/Herdecke, Herdecke, Germany
| | - Wolfram Windisch
- Lungenklinik, Kliniken der Stadt Köln gGmbH, Universität Witten/Herdecke, Herdecke, Germany
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18
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The Effectiveness of Workshop and Multimedia Training Methods on the Nurses' Decision-Making Skills Regarding Weaning From Mechanical Ventilation. Dimens Crit Care Nurs 2020; 39:91-100. [PMID: 32000241 DOI: 10.1097/dcc.0000000000000404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Nurses can safely and effectively wean patients from mechanical ventilation (MV) by the use of proper instruments and planning. OBJECTIVE The aim of this study was to compare the effectiveness of 2 training methods on the decision-making skill of intensive critical care (ICU) nurses with regard to weaning from MV. METHODS In this quasi-experimental study, 80 nurses working in ICUs participated in 1 of 2 educational groups in 2016. The interventions were workshop and multimedia training for decision-making skill regarding weaning from MV. The data were gathered from a questionnaire based on the Burns Weaning Assessment Program tool before and 1 month after the intervention. Data were analyzed by independent t test, the χ test, and the Fisher exact test using the software SPSS v. 17. RESULTS The decision-making skill with regard to awareness of weaning factors (physiological and respiratory) increased in both groups after the intervention (P ≤ .001), but the difference between the 2 groups was not statistically meaningful. Considering the mean scores before and after the intervention, the general skill of decision-making regarding weaning from MV was higher in the multimedia training group compared with the workshop training group (P ≤ .001). CONCLUSION The multimedia training method, which has been more successful, is recommended owing to its characteristics of virtual education, such as accessibility, flexibility, learner centeredness, and expansibility, as well as nurses' lack of time.
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19
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Neuschwander A, Chhor V, Yavchitz A, Resche-Rigon M, Pirracchio R. Automated weaning from mechanical ventilation: Results of a Bayesian network meta-analysis. J Crit Care 2020; 61:191-198. [PMID: 33181416 DOI: 10.1016/j.jcrc.2020.10.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 10/20/2020] [Accepted: 10/23/2020] [Indexed: 12/29/2022]
Abstract
PURPOSE Mechanical ventilation (MV) weaning is a crucial step. Automated weaning modes reduce MV duration but the question of the best automated mode remains unanswered. Our objective was to compare the major automated modes for MV weaning in critically ill and post-operative adult patients. MATERIAL AND METHODS We conducted a network Bayesian meta-analysis to compare different automated modes. We searched MEDLINE, EMBASE and Cochrane central registry for randomized control trials comparing automated weaning modes either to another automated mode or to standard-of-care. The primary outcome was the duration of MV weaning extracted from the original trials. RESULTS 663 articles were screened and 26 trials (2097patients) were included in the final analysis. All automated modes included in the study (ASV°, Intellivent ASV, Smartcare, Automode°, PAV° and MRV°) outperformed standard-of-care but no automated mode reduced the duration of mechanical ventilation weaning as compared to others in the network meta-analysis. CONCLUSION Compared to standard weaning practice, all automated modes significantly reduced the duration of MV weaning in critically ill and post-operative adult patients. When cross-compared using a network meta-analysis, no specific mode was different in reducing the duration of MV weaning. The study was registered in PROSPERO (CRD42015024742).
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Affiliation(s)
- Arthur Neuschwander
- Service d'Anesthésie Réanimation, Hôpital Européen Georges Pompidou, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Vibol Chhor
- Service d'Anesthésie Réanimation, Hôpital Européen Georges Pompidou, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Amélie Yavchitz
- Service d'Anesthésie Réanimation, Hôpital Européen Georges Pompidou, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Matthieu Resche-Rigon
- Service de Biostatistiques et Information Médicale, Hôpital Saint Louis, Unité INSERM UMR-1153, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Romain Pirracchio
- Service d'Anesthésie Réanimation, Hôpital Européen Georges Pompidou, Université Paris Descartes, Sorbonne Paris Cité, Paris, France; Department of Anesthesia and Perioperative Medicine, San Francisco General Hospital and Trauma Center, University of California, San Francisco, CA, USA.
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20
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Vizcaychipi MP, Martins L, White JR, Karbing DS, Gupta A, Singh S, Osman L, Moreno-Cuesta J, Rees S. Intensive Care Weaning (iCareWean) protocol on weaning from mechanical ventilation: a single-blinded multicentre randomised control trial comparing an open-loop decision support system and routine care, in the general intensive care unit. BMJ Open 2020; 10:e042145. [PMID: 32878764 PMCID: PMC7470506 DOI: 10.1136/bmjopen-2020-042145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION Automated systems for ventilator management to date have been either fully heuristic rule-based systems or based on a combination of simple physiological models and rules. These have been shown to reduce the duration of mechanical ventilation in simple to wean patients. At present, there are no published studies that evaluate the effect of systems that use detailed physiological descriptions of the individual patient.The BEACON Caresystem is a model-based decision support system that uses mathematical models of patients' physiology in combination with models of clinical preferences to provide advice on appropriate ventilator settings. An individual physiological description may be particularly advantageous in selecting the appropriate therapy for a complex, heterogeneous, intensive care unit (ICU) patient population. METHODS AND ANALYSIS Intenive Care weaning (iCareWean) is a single-blinded, multicentre, prospective randomised control trial evaluating management of mechanical ventilation as directed by the BEACON Caresystem compared with that of current care, in the general intensive care setting. The trial will enrol 274 participants across multiple London National Health Service ICUs. The trial will use a primary outcome of duration of mechanical ventilation until successful extubation. ETHICS AND DISSEMINATION Safety oversight will be under the direction of an independent committee of the study sponsor. Study approval was obtained from the regional ethics committee of the Health Research Authority (HRA), (Research Ethic Committee (REC) reference: 17/LO/0887. Integrated Research Application System (IRAS) reference: 226610. Results will be disseminated through international critical care conference/symposium and publication in peer-reviewed journal. TRIAL REGISTRATION NUMBER ClinicalTrials.gov under NCT03249623. This research is registered with the National Institute for Health Research under CPMS ID: 34831.
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Affiliation(s)
- M P Vizcaychipi
- APMIC, Imperial College London, London, UK
- Magill Department of Anaesthesia and Intensive Care Medicine, Chelsea and Westminster Healthcare NHS Trust, London, UK
| | - Laura Martins
- Research Trial Unit, Chelsea and Westminster Hospital NHS Foundation Trust, London, London, UK
| | - James R White
- Magill Department of Anaesthesia, Chelsea and Westminster Hospital NHS Foundation Trust, London, London, UK
| | - Dan Stleper Karbing
- Center for Model-based Medical Decision Support, Aalborg Universitet, Aalborg, Denmark
| | - Amandeep Gupta
- Anaesthetic Department, West Middlesex University Hospital NHS Trust, London, London, UK
| | - Suveer Singh
- Magill Department of Anaesthesia and Intensive Care Medicine, Chelsea and Westminster Healthcare NHS Trust, London, UK
| | - Leyla Osman
- Magill Department of Anaesthesia, Chelsea and Westminster Hospital NHS Foundation Trust, London, London, UK
| | - Jeronimo Moreno-Cuesta
- Anaesthetic Department, North Middlesex University Hospital NHS Trust, London, London, UK
| | - Steve Rees
- Department of Health Science and Technology, Aalborg Universitet Institut for Medicin og Sundhedsteknologi, Aalborg, Denmark
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21
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Jonkman AH, Rauseo M, Carteaux G, Telias I, Sklar MC, Heunks L, Brochard LJ. Proportional modes of ventilation: technology to assist physiology. Intensive Care Med 2020; 46:2301-2313. [PMID: 32780167 PMCID: PMC7417783 DOI: 10.1007/s00134-020-06206-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 07/30/2020] [Indexed: 01/17/2023]
Abstract
Proportional modes of ventilation assist the patient by adapting to his/her effort, which contrasts with all other modes. The two proportional modes are referred to as neurally adjusted ventilatory assist (NAVA) and proportional assist ventilation with load-adjustable gain factors (PAV+): they deliver inspiratory assist in proportion to the patient’s effort, and hence directly respond to changes in ventilatory needs. Due to their working principles, NAVA and PAV+ have the ability to provide self-adjusted lung and diaphragm-protective ventilation. As these proportional modes differ from ‘classical’ modes such as pressure support ventilation (PSV), setting the inspiratory assist level is often puzzling for clinicians at the bedside as it is not based on usual parameters such as tidal volumes and PaCO2 targets. This paper provides an in-depth overview of the working principles of NAVA and PAV+ and the physiological differences with PSV. Understanding these differences is fundamental for applying any assisted mode at the bedside. We review different methods for setting inspiratory assist during NAVA and PAV+ , and (future) indices for monitoring of patient effort. Last, differences with automated modes are mentioned.
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Affiliation(s)
- Annemijn H Jonkman
- Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, 209 Victoria Street, Room 4-08, Toronto, ON, M5B 1T8, Canada.,Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.,Department of Intensive Care Medicine, Amsterdam University Medical Centers, Location VUmc, Amsterdam, The Netherlands
| | - Michela Rauseo
- Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, 209 Victoria Street, Room 4-08, Toronto, ON, M5B 1T8, Canada.,Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
| | - Guillaume Carteaux
- Assistance Publique-Hôpitaux de Paris, CHU Henri Mondor, Créteil, F-94010, France.,Groupe de Recherche Clinique CARMAS, Université Paris Est-Créteil, Créteil, F-94010, France.,Institut Mondor de Recherche Biomédicale INSERM 955, Créteil, F-94010, France
| | - Irene Telias
- Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, 209 Victoria Street, Room 4-08, Toronto, ON, M5B 1T8, Canada.,Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
| | - Michael C Sklar
- Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, 209 Victoria Street, Room 4-08, Toronto, ON, M5B 1T8, Canada.,Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
| | - Leo Heunks
- Department of Intensive Care Medicine, Amsterdam University Medical Centers, Location VUmc, Amsterdam, The Netherlands
| | - Laurent J Brochard
- Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, 209 Victoria Street, Room 4-08, Toronto, ON, M5B 1T8, Canada. .,Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.
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22
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Damiani LF, Bruhn A, Retamal J, Bugedo G. Patient-ventilator dyssynchronies: Are they all the same? A clinical classification to guide actions. J Crit Care 2020; 60:50-57. [PMID: 32739760 DOI: 10.1016/j.jcrc.2020.07.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 07/06/2020] [Accepted: 07/13/2020] [Indexed: 11/18/2022]
Abstract
Patient ventilatory dyssynchrony (PVD) is a mismatch between the respiratory drive of the patient and ventilatory assistance. It is a complex event seen in almost all ventilated patients and at any ventilator mode, with uncertain significance and prognosis. Due to its different pathophysiological mechanisms, there is still not consensual classification to guide us in selecting the best treatment. In the present review we aimed to summarize some clinical data on PVD, and to propose a clinical classification based on the type of PVD, from potentially innocuous to clearly harmful PVD, which could help clinicians in the decision-making process from adjusting ventilator settings to deeply sedate or paralyze the patient. Clearly, further studies are needed addressing risk factors, physiologic mechanisms and direct consequences of PVD in order to help clinicians to design effective and proven strategies at the bedside.
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Affiliation(s)
- L Felipe Damiani
- Departamento Ciencias de la Salud, Carrera de Kinesiología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile; Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile.
| | - Alejandro Bruhn
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile
| | - Jaime Retamal
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile
| | - Guillermo Bugedo
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile
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Burns KEA, Rizvi L, Cook DJ, Seely AJE, Rochwerg B, Lamontagne F, Devlin JW, Dodek P, Mayette M, Tanios M, Gouskos A, Kay P, Mitchell S, Kiedrowski KC, Hill NS. Frequency of Screening and SBT Technique Trial - North American Weaning Collaboration (FAST-NAWC): a protocol for a multicenter, factorial randomized trial. Trials 2019; 20:587. [PMID: 31604480 PMCID: PMC6787986 DOI: 10.1186/s13063-019-3641-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 08/08/2019] [Indexed: 11/10/2022] Open
Abstract
RATIONALE In critically ill patients receiving invasive mechanical ventilation (MV), research supports the use of daily screening to identify patients who are ready to undergo a spontaneous breathing trial (SBT) followed by conduct of an SBT. However, once daily (OD) screening is poorly aligned with the continuous care provided in most intensive care units (ICUs) and the best SBT technique for clinicians to use remains controversial. OBJECTIVES To identify the optimal screening frequency and SBT technique to wean critically ill adults in the ICU. METHODS We aim to conduct a multicenter, factorial design randomized controlled trial with concealed allocation, comparing the effect of both screening frequency (once versus at least twice daily [ALTD]) and SBT technique (Pressure Support [PS] + Positive End-Expiratory Pressure [PEEP] vs T-piece) on the time to successful extubation (primary outcome) in 760 critically ill adults who are invasively ventilated for at least 24 h in 20 North American ICUs. In the OD arm, respiratory therapists (RTs) will screen study patients between 06:00 and 08:00 h. In the ALTD arm, patients will be screened at least twice daily between 06:00 and 08:00 h and between 13:00 and 15:00 h with additional screens permitted at the clinician's discretion. When the SBT screen is passed, an SBT will be conducted using the assigned technique (PS + PEEP or T-piece). We will follow patients until successful extubation, death, ICU discharge, or until day 60 after randomization. We will contact patients or their surrogates six months after randomization to assess health-related quality of life and functional status. RELEVANCE The around-the-clock availability of RTs in North American ICUs presents an important opportunity to identify the optimal SBT screening frequency and SBT technique to minimize patients' exposure to invasive ventilation and ventilator-related complications. TRIAL REGISTRATION Clinical Trials.gov, NCT02399267 . Registered on Nov 21, 2016 first registered.
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Affiliation(s)
- K E A Burns
- Interdepartmental Division of Critical Care, University of Toronto, Toronto, ON, Canada.
- Department of Medicine, Division of Critical Care Medicine, St Michael's Hospital, 30 Bond Street, Office 4-045 Donnelly Wing, Toronto, ON, M5B 1W8, Canada.
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, 30 Bond Street, Office 4-045 Donnelly Wing, Toronto, ON, M5B 1W8, Canada.
| | - Leena Rizvi
- Department of Medicine, Division of Critical Care Medicine, St Michael's Hospital, 30 Bond Street, Office 4-045 Donnelly Wing, Toronto, ON, M5B 1W8, Canada
| | - Deborah J Cook
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Andrew J E Seely
- Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Bram Rochwerg
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Francois Lamontagne
- Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - John W Devlin
- School of Pharmacy, Northeastern University, Boston, MA, USA
- Division of Pulmonary, Critical Care and Sleep Medicine, Tufts Medical Center, Boston, MA, USA
| | - Peter Dodek
- Centre for Health Evaluation and Outcome Sciences, Vancouver, BC, Canada
- University of British Columbia, Vancouver, BC, Canada
| | - Michael Mayette
- Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Maged Tanios
- Critical Care Medicine, Longbeach Memorial, Longbeach, CA, USA
| | - Audrey Gouskos
- Patient and Family Advisory Committee Member, FAST - NAWC Trial, Toronto, Canada
| | - Phyllis Kay
- Patient and Family Advisory Committee Member, FAST - NAWC Trial, Toronto, Canada
| | - Susan Mitchell
- Patient and Family Advisory Committee Member, FAST - NAWC Trial, Toronto, Canada
| | - Kenneth C Kiedrowski
- Patient and Family Advisory Committee Member, FAST - NAWC Trial, Toronto, Canada
| | - Nicholas S Hill
- Division of Pulmonary, Critical Care and Sleep Medicine, Tufts Medical Center, Boston, MA, USA
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Kink E, Erler L, Fritz W, Funk GC, Gäbler M, Krenn F, Kühteubl G, Schindler O, Wanke T. Beatmung bei COPD: von der Präklinik bis zur außerklinischen Beatmung. Eine Übersicht des Arbeitskreises für Beatmung und Intensivmedizin der österreichischen Gesellschaft für Pneumologie. Wien Klin Wochenschr 2019; 131:417-427. [PMID: 31111203 DOI: 10.1007/s00508-019-1515-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
This paper was created by the Austrian Society of Pneumology (Working group Ventilation and Intensive Care) to summarize the specific characteristics of mechanical ventilation in patients presenting with chronic obstructive pulmonary disease (COPD). The main differences in pathophysiology and mechanical ventilation are shown, including acute respiratory failure and out-of-hospital mechanical ventilation.
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Affiliation(s)
- Eveline Kink
- Abteilung für Innere Medizin und Pneumologie, LKH Graz II, Standort Enzenbach, Hörgas 30, 8112, Gratwein-Straßengel, Österreich
| | - Lorenz Erler
- Abteilung für Lungenkrankheiten, Leoben, Österreich
| | - Wilfried Fritz
- Klinische Abteilung für Lungenkrankheiten, Universitätsklinikum für Innere Medizin, LKH.-Univ. Klinikum Graz, Graz, Österreich
| | | | - Martin Gäbler
- Institut für Präventiv- und Angewandte Sportmedizin, Universitätsklinikum Krems, Karl Landsteiner Privatuniversität für Gesundheitswissenschaften, Mitterweg 10, 3500, Krems an der Donau, Österreich
| | | | | | - Otmar Schindler
- Abteilung für Innere Medizin und Pneumologie, LKH Graz II, Standort Enzenbach, Hörgas 30, 8112, Gratwein-Straßengel, Österreich
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25
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Santos Rodriguez JA, Mancebo Cortés J. Mortality study in patients at weaning from mechanical ventilation. Med Intensiva 2019; 44:485-492. [PMID: 31474456 DOI: 10.1016/j.medin.2019.07.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 05/14/2019] [Accepted: 07/09/2019] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To explain mortality in the ICU and in hospital among patients subjected to invasive mechanical ventilation. DESIGN A prospective, 9-month observational cohort study was carried out. SETTING A Department of Intensive Care Medicine. PATIENTS Consecutive patients requiring invasive mechanical ventilation were followed-up on until hospital discharge or death. INTERVENTIONS None. INTEREST VARIABLES Date of admission, day of first spontaneous breathing test, length of mechanical ventilation, final extubation date, days in ICU, days in hospital or discharge from ICU, SAPS-3 score, WIND study classification, day of death, hospital discharge. RESULTS There were 266 patients: 40 in group 0 of the WIND classification (15%; 95% CI 11-20%); 166 in group 1 (62%; 95% CI 56-68%); 38 in group 2 (14%; 95% CI 11-19%); and 22 in group 3 (8%; 95% CI 6-12%. Logistic regression analysis showed group 3 to have the highest hospital mortality (group 3 vs. group 1; odds ratio 4.0; 95% CI 1.5-10.8; P=.007). However, Cox regression analysis showed no significant differences (hazard ratio group 3 vs. group 1, 1.6; 95% CI 0.7-3.4; P=ns). CONCLUSION In our study, considering exposure time, the probability of mortality was the same among the 3 different groups of patients with at least one spontaneous breathing test.
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Affiliation(s)
- J A Santos Rodriguez
- Servicio de Medicina Intensiva, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, España.
| | - J Mancebo Cortés
- Servicio de Medicina Intensiva, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, España
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26
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Vazquez Guillamet C, Kollef MH. Is Zero Ventilator-Associated Pneumonia Achievable?: Practical Approaches to Ventilator-Associated Pneumonia Prevention. Clin Chest Med 2019; 39:809-822. [PMID: 30390751 DOI: 10.1016/j.ccm.2018.08.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Ventilator-associated pneumonia (VAP) remains a significant clinical entity with reported incidence rates of 7% to 15%. Given the considerable adverse consequences associated with this infection, VAP prevention became a core measure required in most US hospitals. Many institutions implemented effective VAP prevention bundles that combined head of bed elevation, hand hygiene, chlorhexidine oral care, and subglottic drainage. More recently, spontaneous breathing and awakening trials have consistently been shown to shorten the duration of mechanical ventilation and secondarily reduce the occurrence of VAP. More recent data question the overall positive impact of prevention bundles, including some of their core component interventions.
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Affiliation(s)
- Cristina Vazquez Guillamet
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of New Mexico School of Medicine, 2425 Camino de Salud, Albuquerque, NM 87106, USA; Division of Infectious Diseases, University of New Mexico School of Medicine, 2425 Camino de Salud, Albuquerque, NM 87106, USA
| | - Marin H Kollef
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, 4523 Clayton Avenue, Campus Box 8052, St Louis, MO 63110, USA.
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27
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Girard TD, Burns KEA. Revisiting, Reframing, and Casting a New Light on Liberation From Mechanical Ventilation. JAMA 2019; 321:2167-2169. [PMID: 31184723 DOI: 10.1001/jama.2019.7364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Timothy D Girard
- Clinical Research, Investigation, and Systems Modeling of Acute Illness (CRISMA) Center, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Karen E A Burns
- Interdepartmental Division of Critical Care, University of Toronto, Toronto, Ontario, Canada
- Division of Critical Care Medicine, Department of Medicine, St Michael's Hospital, Toronto, Ontario, Canada
- Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada
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Morton SE, Knopp JL, Chase JG, Docherty P, Howe SL, Möller K, Shaw GM, Tawhai M. Optimising mechanical ventilation through model-based methods and automation. ANNUAL REVIEWS IN CONTROL 2019; 48:369-382. [PMID: 36911536 PMCID: PMC9985488 DOI: 10.1016/j.arcontrol.2019.05.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/09/2019] [Accepted: 05/01/2019] [Indexed: 06/11/2023]
Abstract
Mechanical ventilation (MV) is a core life-support therapy for patients suffering from respiratory failure or acute respiratory distress syndrome (ARDS). Respiratory failure is a secondary outcome of a range of injuries and diseases, and results in almost half of all intensive care unit (ICU) patients receiving some form of MV. Funding the increasing demand for ICU is a major issue and MV, in particular, can double the cost per day due to significant patient variability, over-sedation, and the large amount of clinician time required for patient management. Reducing cost in this area requires both a decrease in the average duration of MV by improving care, and a reduction in clinical workload. Both could be achieved by safely automating all or part of MV care via model-based dynamic systems modelling and control methods are ideally suited to address these problems. This paper presents common lung models, and provides a vision for a more automated future and explores predictive capacity of some current models. This vision includes the use of model-based methods to gain real-time insight to patient condition, improve safety through the forward prediction of outcomes to changes in MV, and develop virtual patients for in-silico design and testing of clinical protocols. Finally, the use of dynamic systems models and system identification to guide therapy for improved personalised control of oxygenation and MV therapy in the ICU will be considered. Such methods are a major part of the future of medicine, which includes greater personalisation and predictive capacity to both optimise care and reduce costs. This review thus presents the state of the art in how dynamic systems and control methods can be applied to transform this core area of ICU medicine.
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Affiliation(s)
- Sophie E Morton
- Department of Mechanical Engineering, University of Canterbury, New Zealand
| | - Jennifer L Knopp
- Department of Mechanical Engineering, University of Canterbury, New Zealand
| | - J Geoffrey Chase
- Department of Mechanical Engineering, University of Canterbury, New Zealand
| | - Paul Docherty
- Department of Mechanical Engineering, University of Canterbury, New Zealand
| | - Sarah L Howe
- Department of Mechanical Engineering, University of Canterbury, New Zealand
| | - Knut Möller
- Institute of Technical Medicine, Furtwangen University, Villingen-Schwenningen, Germany
| | - Geoffrey M Shaw
- Department of Intensive Care, Christchurch Hospital, Christchurch, New Zealand
| | - Merryn Tawhai
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
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Abstract
Pulmonary ultrasonography is a complementary study that is easy to perform at the patient bedside with no need to transfer the patient to special areas. The technique provides information with high sensitivity and specificity for different pathologies. Pulmonary ultrasonography is a very important diagnostic tool in the assessment of lung, pleural, and chest wall diseases. Pulmonary ultrasound provides low-cost analysis, easy real-time reproduction, and safety, all of which have made it a beneficial tool in the diagnostic arsenal available to medical personnel. The purpose of this review was to describe the usefulness of pulmonary ultrasound in critical areas.
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Grieco DL, Bitondo MM, Aguirre-Bermeo H, Italiano S, Idone FA, Moccaldo A, Santantonio MT, Eleuteri D, Antonelli M, Mancebo J, Maggiore SM. Patient-ventilator interaction with conventional and automated management of pressure support during difficult weaning from mechanical ventilation. J Crit Care 2018; 48:203-210. [DOI: 10.1016/j.jcrc.2018.08.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 08/27/2018] [Accepted: 08/29/2018] [Indexed: 12/21/2022]
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Abstract
Closed loop control of mechanical ventilation is routine and operates behind the ventilator interface. Reducing caregiver interactions is neither an advantage for the patient or the staff. Automated systems causing lack of situational awareness of the intensive care unit are a concern. Along with autonomous systems must come monitoring and displays that display patients' current condition and response to therapy. Alert notifications for sudden escalation of therapy are required to ensure patient safety. Automated ventilation is useful in remote settings in the absence of experts. Whether automated ventilation will be accepted in large academic medical centers remains to be seen.
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Spadaro S, Karbing DS, Dalla Corte F, Mauri T, Moro F, Gioia A, Volta CA, Rees SE. An open-loop, physiological model based decision support system can reduce pressure support while acting to preserve respiratory muscle function. J Crit Care 2018; 48:407-413. [PMID: 30317049 DOI: 10.1016/j.jcrc.2018.10.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 10/04/2018] [Accepted: 10/04/2018] [Indexed: 11/25/2022]
Abstract
PURPOSE To assess whether a clinical decision support system (CDSS) suggests PS and FIO2 maintaining appropriate breathing effort, and minimizing FIO2. MATERIALS Prospective, cross-over study in PS ventilated ICU patients. Over support (150% baseline) and under support (50% baseline) were applied by changing PS (15 patients) or PEEP (8 patients). CDSS advice was followed. Tension time index of inspiratory muscles (TTies), respiratory and metabolic variables were measured. RESULTS PS over support (median 8.0 to 12.0 cmH2O) reduced respiratory muscle activity (TTies 0.090 ± 0.028 to 0.049 ± 0.030; p < .01), and tended to increase tidal volume (VT: 8.6 ± 3.0 to 10.1 ± 2.9 ml/kg; p = .08). CDSS advice reduced PS (6.0 cmH2O, p = .005), increased TTies (0.076 ± 0.038, p < .01), and tended to reduce VT (8.9 ± 2.4 ml/kg, p = .08). PS under support (12.0 to 4.0 cmH2O) slightly increased respiratory muscle activity, (TTies to 0.120 ± 0.044; p = .007) with no significant CDSS advice. CDSS advice reduced FIO2 by 12-14% (p = .005), resulting in median SpO2 = 96% (p < .02). PEEP changes did not result in changes in physiological variables, or CDSS advice. CONCLUSION The CDSS advised on low values of PS often not prohibiting extubation, while acting to preserve respiratory muscle function and preventing passive lung inflation. CDSS advice minimized FIO2 maintaining SpO2 at safe and beneficial values.
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Affiliation(s)
- Savino Spadaro
- Department of Morphology, Experimental Medicine and Surgery, Section of Anaesthesia and Intensive Care, Arcispedale Sant' Anna, University of Ferrara, Ferrara, Italy
| | - Dan Stieper Karbing
- Respiratory and Critical Care Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Francesca Dalla Corte
- Department of Morphology, Experimental Medicine and Surgery, Section of Anaesthesia and Intensive Care, Arcispedale Sant' Anna, University of Ferrara, Ferrara, Italy
| | - Tommaso Mauri
- Department of Anesthesia, Critical Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Federico Moro
- Department of Morphology, Experimental Medicine and Surgery, Section of Anaesthesia and Intensive Care, Arcispedale Sant' Anna, University of Ferrara, Ferrara, Italy
| | - Antonio Gioia
- Department of Morphology, Experimental Medicine and Surgery, Section of Anaesthesia and Intensive Care, Arcispedale Sant' Anna, University of Ferrara, Ferrara, Italy
| | - Carlo Alberto Volta
- Department of Morphology, Experimental Medicine and Surgery, Section of Anaesthesia and Intensive Care, Arcispedale Sant' Anna, University of Ferrara, Ferrara, Italy
| | - Stephen Edward Rees
- Respiratory and Critical Care Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark.
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34
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An Open-Loop, Physiologic Model–Based Decision Support System Can Provide Appropriate Ventilator Settings. Crit Care Med 2018; 46:e642-e648. [DOI: 10.1097/ccm.0000000000003133] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Glotzbach JP, Sharma V, Tonna JE, Pettit JC, McKellar SH, Eckhauser AW, Varghese TK, Selzman CH. Value-driven cardiac surgery: Achieving "perfect care" after coronary artery bypass grafting. J Thorac Cardiovasc Surg 2018; 156:1436-1448.e2. [PMID: 30017448 DOI: 10.1016/j.jtcvs.2018.03.177] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 03/08/2018] [Accepted: 03/23/2018] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The objective of this study was to determine if the implementation of a value-driven outcomes tool comprising modifiable quality and utilization metrics lowers cost and improves value of coronary artery bypass grafting (CABG) postoperative care. METHODS Ten metrics were defined for CABG patients in 2 temporally separated phases. Clinical care protocols were designed and implemented to increase compliance with these metrics. Clinical outcomes and cost data were harvested from the electronic medical record using a proprietary value-driven outcomes tool and verified by a data management team. "Perfect care" was defined as achieving all 10 metrics per patient episode. RESULTS Over a 45-month period, data of 467 consecutive patients who underwent isolated CABG were analyzed. "Perfect care" was successfully achieved in 304 patients (65.1%). There were no observed differences in mortality between patient groups. Linear regression analysis showed a negative correlation between percent compliance with "perfect care" and mean cost. When multivariate analysis was used to adjust for preoperative risk score, mean cost for patients with "perfect care" was 37.0% less than for those without "perfect care." CONCLUSIONS In the context of focused institution-specific interventions to target quality and utilization metrics for CABG care, clinical care pathways and protocols informed by innovative tools that link automated tracking of these metrics to cost data might simultaneously promote quality and decrease costs, thereby enhancing value. This descriptive study provides preliminary support for a systematic approach to define, measure, and modulate the drivers of value for cardiothoracic surgery patients.
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Affiliation(s)
- Jason P Glotzbach
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, Utah.
| | - Vikas Sharma
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Joseph E Tonna
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Jacob C Pettit
- Data Analytics and Decision Support, University of Utah, Salt Lake City, Utah
| | - Stephen H McKellar
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Aaron W Eckhauser
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Thomas K Varghese
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, Utah
| | - Craig H Selzman
- Division of Cardiothoracic Surgery, Department of Surgery, University of Utah, Salt Lake City, Utah
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Modrin A, Gilbert ML. De l’entrée à la sortie du service de réanimation adulte : une mise au point sur l’utilisation courante du monitoring du CO 2 expiré. MEDECINE INTENSIVE REANIMATION 2018. [DOI: 10.3166/rea-2018-0018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
L’objectif de cette mise au point est d’effectuer une revue des indications de l’utilisation du monitorage du CO2 expiré en réanimation adulte. De par sa physiologie, sa mesure est un reflet de l’état hémodynamique, respiratoire et métabolique du patient. La spectrométrie infrarouge est la méthode de mesure la plus courante. La capnographie commune (CO2 expiré en fonction du temps) est divisée en plusieurs phases dont l’analyse visuelle peut faire évoquer de nombreuses anomalies ventilatoires. La capnographie volumétrique fournit une mesure de l’espace mort. La capnométrie est recommandée en réanimation pour contrôler l’intubation trachéale ou bien au cours d’un arrêt cardiorespiratoire comme facteur pronostique. Tout patient traité par ventilation mécanique invasive, surtout lors d’un transport, doit être équipé d’un capnomètre afin d’anticiper toute complication respiratoire (extubation, bronchospasme, hypoventilation). La pression de fin d’expiration en CO2 (PetCO2) est une évaluation de la pression artérielle en CO2 (PaCO2) utile pour limiter le nombre de prélèvements biologiques, par exemple en neuroréanimation, mais de nombreux facteurs font varier le gradient entre ces deux valeurs. Les études n’apportent pas de preuve pour l’utilisation de la capnographie volumétrique dans le diagnostic d’embolie pulmonaire en réanimation. Chez les patients souffrant de syndrome de détresse respiratoire aiguë, la littérature médicale n’apporte pas de preuve suffisante pour un intérêt en pratique clinique courante de la capnométrie volumétrique qui semble limitée dans ce cas à la recherche.
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Klingert W, Peter J, Thiel C, Thiel K, Rosenstiel W, Klingert K, Grasshoff C, Königsrainer A, Schenk M. Fully automated life support: an implementation and feasibility pilot study in healthy pigs. Intensive Care Med Exp 2018; 6:2. [PMID: 29340799 PMCID: PMC5770352 DOI: 10.1186/s40635-018-0168-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 01/09/2018] [Indexed: 01/31/2023] Open
Abstract
Background Automated systems are available in various application areas all over the world for the purpose of reducing workload and increasing safety. However, such support systems that would aid caregivers are still lacking in the medical sector. With respect to workload and safety, especially, the intensive care unit appears to be an important and challenging application field. Whereas many closed-loop subsystems for single applications already exist, no comprehensive system covering multiple therapeutic aspects and interactions is available yet. This paper describes a fully closed-loop intensive care therapy and presents a feasibility analysis performed in three healthy pigs over a period of 72 h each to demonstrate the technical and practical implementation of automated intensive care therapy. Methods The study was performed in three healthy, female German Landrace pigs under general anesthesia with endotracheal intubation. An arterial and a central venous line were implemented, and a suprapubic urinary catheter was inserted. Electrolytes, glucose levels, acid-base balance, and respiratory management were completely controlled by an automated fuzzy logic system based on individual targets. Fluid management by adaption of the respective infusion rates for the individual parameters was included. Results During the study, no manual modification of the device settings was allowed or required. Homoeostasis in all animals was kept stable during the entire observation period. All remote-controlled parameters were maintained within physiological ranges for most of the time (free arterial calcium 73%, glucose 98%, arterial base excess 89%, and etCO2 98%). Subsystem interaction was analyzed. Conclusions In the presented study, we demonstrate the feasibility of a fully closed-loop system, for which we collected high-resolution data on the interaction and response of the different subsystems. Further studies should use big data approaches to analyze and investigate the interactions between the subsystems in more detail.
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Affiliation(s)
- Wilfried Klingert
- Department of General, Visceral and Transplant Surgery, Tübingen University Hospital, Hoppe-Seyler-Str. 3, 72076, Tübingen, Germany.
| | - Jörg Peter
- Department of Computer Engineering, Tübingen University, Sand 13, 72076, Tübingen, Germany
| | - Christian Thiel
- Department of General, Visceral and Transplant Surgery, Tübingen University Hospital, Hoppe-Seyler-Str. 3, 72076, Tübingen, Germany
| | - Karolin Thiel
- Department of General, Visceral and Transplant Surgery, Tübingen University Hospital, Hoppe-Seyler-Str. 3, 72076, Tübingen, Germany
| | - Wolfgang Rosenstiel
- Department of Computer Engineering, Tübingen University, Sand 13, 72076, Tübingen, Germany
| | - Kathrin Klingert
- Department of Anesthesiology, Tübingen University Hospital, Hoppe-Seyler-Str. 3, 72076, Tübingen, Germany
| | - Christian Grasshoff
- Department of Anesthesiology, Tübingen University Hospital, Hoppe-Seyler-Str. 3, 72076, Tübingen, Germany
| | - Alfred Königsrainer
- Department of General, Visceral and Transplant Surgery, Tübingen University Hospital, Hoppe-Seyler-Str. 3, 72076, Tübingen, Germany
| | - Martin Schenk
- Department of General, Visceral and Transplant Surgery, Tübingen University Hospital, Hoppe-Seyler-Str. 3, 72076, Tübingen, Germany
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Roche-Campo F, Bedet A, Vivier E, Brochard L, Mekontso Dessap A. Cardiac function during weaning failure: the role of diastolic dysfunction. Ann Intensive Care 2018; 8:2. [PMID: 29330683 PMCID: PMC5768586 DOI: 10.1186/s13613-017-0348-4] [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: 09/27/2017] [Accepted: 12/26/2017] [Indexed: 12/16/2022] Open
Abstract
Background Cardiac dysfunction is a common cause of weaning failure. Weaning shares some similarities with a cardiac stress test and may challenge active phases of the cardiac cycle-like ventricular contractility and relaxation. This study aimed at assessing systolic and diastolic function during the weaning process and scrutinizing their dynamics during weaning trials. Methods Echocardiography was performed during baseline ventilator settings to assess cardiac function at the initiation of the weaning process and at the start and the end of consecutive weaning trials (performed at day-1, day-2, and before extubation if applicable) to explore the evolution of left ventricle contractility and relaxation in a subset of patients. Results Among 67 patients included, weaning was prolonged (≥ 7 days) in 18 (27%) patients and short (< 7 days) in 49 (73%). Prevalence of systolic dysfunction and isolated diastolic dysfunction before the initiation of weaning process were 37 and 17%, respectively. Isolated diastolic dysfunction was more frequent in patients with prolonged weaning as compared to their counterparts. Thirty-one patients were explored by echocardiography during consecutive weaning trials. An increase in filling pressures with an alteration of ventricular relaxation (as assessed by a decrease in tissue Doppler early mitral diastolic wave velocity) was found during failed weaning trials. Conclusions Isolated diastolic dysfunction was associated with a prolongation of weaning. Increased filling pressures with left ventricle relaxation impairment may be a key mechanism of weaning trial failure. Electronic supplementary material The online version of this article (10.1186/s13613-017-0348-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ferran Roche-Campo
- Service de Réanimation Médicale, DHU A-TVB, Hôpitaux Universitaires Henri Mondor, Assistance Publique - Hôpitaux de Paris, 51 Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Servei de Medicina Intensiva, Hospital Verge de la Cinta, Tortosa, Tarragona, Spain
| | - Alexandre Bedet
- Service de Réanimation Médicale, DHU A-TVB, Hôpitaux Universitaires Henri Mondor, Assistance Publique - Hôpitaux de Paris, 51 Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France. .,Groupe de Recherche Clinique CARMAS, Institut Mondor de Recherche Biomédicale, Faculté de Médecine de Créteil, Université Paris Est Créteil, 94010, Créteil, France.
| | - Emmanuel Vivier
- Service de Réanimation Médicale, DHU A-TVB, Hôpitaux Universitaires Henri Mondor, Assistance Publique - Hôpitaux de Paris, 51 Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Service de Réanimation Polyvalente, Centre hospitalier Saint-Joseph Saint-Luc, Lyon, France
| | - Laurent Brochard
- Service de Réanimation Médicale, DHU A-TVB, Hôpitaux Universitaires Henri Mondor, Assistance Publique - Hôpitaux de Paris, 51 Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Keenan Research Centre and Critical Care Department, St Michael's Hospital, Toronto, Canada.,Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada
| | - Armand Mekontso Dessap
- Service de Réanimation Médicale, DHU A-TVB, Hôpitaux Universitaires Henri Mondor, Assistance Publique - Hôpitaux de Paris, 51 Avenue du Maréchal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Groupe de Recherche Clinique CARMAS, Institut Mondor de Recherche Biomédicale, Faculté de Médecine de Créteil, Université Paris Est Créteil, 94010, Créteil, France
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Dres M, Demoule A. Les systèmes automatisés de sevrage de la ventilation mécanique ont-ils une place en pratique clinique ? MEDECINE INTENSIVE REANIMATION 2018. [DOI: 10.3166/s13546-017-1323-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Du fait de la stagnation de l’offre démographique médicale et du vieillissement de la population, les besoins en ventilation mécanique vont croître dans les années à venir. Dans ce contexte, la conduite du sevrage de la ventilation mécanique par des systèmes automatisés est une perspective séduisante, permettant d’épargner du temps médical et infirmier. La gestion du sevrage par des systèmes automatisés repose sur l’utilisation de l’intelligence artificielle incorporée au sein de ventilateurs capables de détecter précocement la sevrabilité des patients puis d’entreprendre le cas échéant une épreuve de ventilation spontanée. Deux systèmes répondant à ce cahier des charges sont actuellement commercialisés. Bien que les données disponibles soient peu nombreuses, celles-ci semblent justifier l’intérêt pour ces systèmes en montrant au pire une équivalence, au mieux une réduction dans la durée du sevrage, lorsqu’ils sont comparés à une démarche de sevrage conventionnelle. Les défis de demain seront de tester la généralisation de ces systèmes dans la pratique clinique et de définir les caractéristiques des populations susceptibles d’en bénéficier le plus.
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Newth CJL, Khemani RG, Jouvet PA, Sward KA. Mechanical Ventilation and Decision Support in Pediatric Intensive Care. Pediatr Clin North Am 2017; 64:1057-1070. [PMID: 28941535 DOI: 10.1016/j.pcl.2017.06.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Respiratory support is required in most children in the pediatric intensive care unit. Decision-support tools (paper or electronic) have been shown to improve the quality of medical care, reduce errors, and improve outcomes. Computers can assist clinicians by standardizing descriptors and procedures, consistently performing calculations, incorporating complex rules with patient data, and capturing relevant data. This article discusses computer decision-support tools to assist clinicians in making flexible but consistent, evidence-based decisions for equivalent patient states.
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Affiliation(s)
- Christopher John L Newth
- Anesthesiology and Critical Care Medicine, University of Southern California, Children's Hospital Los Angeles, MS #12, PICU Administration, 4650 Sunset Boulevard, Los Angeles, CA 90027, USA.
| | - Robinder G Khemani
- Anesthesiology and Critical Care Medicine, University of Southern California, Children's Hospital Los Angeles, MS #12, PICU Administration, 4650 Sunset Boulevard, Los Angeles, CA 90027, USA
| | - Philippe A Jouvet
- CHU Sainte-Justine, 3175 Chemin de Côte Sainte Catherine, Montreal, Québec H3T 1C5, Canada
| | - Katherine A Sward
- University of Utah College of Nursing, 10 S 2000 East, Salt Lake City, UT 84112
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Kumpf O, Braun JP, Brinkmann A, Bause H, Bellgardt M, Bloos F, Dubb R, Greim C, Kaltwasser A, Marx G, Riessen R, Spies C, Weimann J, Wöbker G, Muhl E, Waydhas C. Quality indicators in intensive care medicine for Germany - third edition 2017. GERMAN MEDICAL SCIENCE : GMS E-JOURNAL 2017; 15:Doc10. [PMID: 28794694 PMCID: PMC5541336 DOI: 10.3205/000251] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Indexed: 12/29/2022]
Abstract
Quality improvement in medicine is depending on measurement of relevant quality indicators. The quality indicators for intensive care medicine of the German Interdisciplinary Society of Intensive Care Medicine (DIVI) from the year 2013 underwent a scheduled evaluation after three years. There were major changes in several indicators but also some indicators were changed only minimally. The focus on treatment processes like ward rounds, management of analgesia and sedation, mechanical ventilation and weaning, as well as the number of 10 indicators were not changed. Most topics remained except for early mobilization which was introduced instead of hypothermia following resuscitation. Infection prevention was added as an outcome indicator. These quality indicators are used in the peer review in intensive care, a method endorsed by the DIVI. A validity period of three years is planned for the quality indicators.
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Affiliation(s)
- Oliver Kumpf
- Department of Anesthesiology and Intensive Care Medicine, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Jan-Peter Braun
- Department of Anesthesiology and Intensive Care Medicine, Martin-Luther Krankenhaus, Berlin, Germany
| | - Alexander Brinkmann
- Department of Anaesthesiology and Intensive Care Medicine, Klinikum Heidenheim, Germany
| | - Hanswerner Bause
- Department of Anaesthesiology and Intensive Care Medicine, Asklepiosklinikum Altona, Hamburg, Germany
| | - Martin Bellgardt
- Department of Anaesthesiology and Intensive Care Medicine, St. Josef-Hospital, Klinikum der Ruhr-Universität Bochum, Germany
| | - Frank Bloos
- Department of Anaesthesiology and Intensive Care Medicine, Jena University Hospital, Jena, Germany
| | - Rolf Dubb
- Kreiskliniken Reutlingen, Deutsche Gesellschaft für Fachkrankenpflege und Funktionsdienste (DGF), Germany
| | - Clemens Greim
- Department of Anaesthesiology and Intensive Care Medicine, Klinikum Fulda, Germany
| | - Arnold Kaltwasser
- Kreiskliniken Reutlingen, Deutsche Gesellschaft für Fachkrankenpflege und Funktionsdienste (DGF), Germany
| | - Gernot Marx
- Department of Intensive Care Medicine, Universitätsklinikum RTWH Aachen, Germany
| | - Reimer Riessen
- Zentralbereich des Departments für Innere Medizin, Internistische Intensivmedizin, Universitätsklinikum Tübingen, Germany
| | - Claudia Spies
- Department of Anesthesiology and Intensive Care Medicine, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Jörg Weimann
- Department of Anesthesiology and Interdisciplinary Intensive Care Medicine, Sankt Gertrauden-Krankenhaus, Berlin, Germany
| | - Gabriele Wöbker
- Department of Intensive Care Medicine, Helios-Klinikum Wuppertal, Germany
| | - Elke Muhl
- Department of Surgery, Medical University of Schleswig Holstein, Kiel, Germany
| | - Christian Waydhas
- Department of Surgery, Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Bochum, Germany.,Medical Faculty of the University Duisburg-Essen, Germany
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Dellaca' RL, Veneroni C, Farre' R. Trends in mechanical ventilation: are we ventilating our patients in the best possible way? Breathe (Sheff) 2017; 13:84-98. [PMID: 28620428 PMCID: PMC5467868 DOI: 10.1183/20734735.007817] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
This review addresses how the combination of physiology, medicine and engineering principles contributed to the development and advancement of mechanical ventilation, emphasising the most urgent needs for improvement and the most promising directions of future development. Several aspects of mechanical ventilation are introduced, highlighting on one side the importance of interdisciplinary research for further development and, on the other, the importance of training physicians sufficiently on the technological aspects of modern devices to exploit properly the great complexity and potentials of this treatment. EDUCATIONAL AIMS To learn how mechanical ventilation developed in recent decades and to provide a better understanding of the actual technology and practice.To learn how and why interdisciplinary research and competences are necessary for providing the best ventilation treatment to patients.To understand which are the most relevant technical limitations in modern mechanical ventilators that can affect their performance in delivery of the treatment.To better understand and classify ventilation modes.To learn the classification, benefits, drawbacks and future perspectives of automatic ventilation tailoring algorithms.
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Affiliation(s)
- Raffaele L Dellaca'
- Dipartimento di Elettronica, Informazione e Bioingegneria - DEIB, Politecnico di Milano University, Milan, Italy
| | - Chiara Veneroni
- Dipartimento di Elettronica, Informazione e Bioingegneria - DEIB, Politecnico di Milano University, Milan, Italy
| | - Ramon Farre'
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain.,CIBER de Enfermedades Respiratorias, Madrid, Spain
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Girault C, Gacouin A. [Weaning from mechanical ventilation. Role of conventional methods and non-invasive ventilation for weaning]. Rev Mal Respir 2017; 34:450-464. [PMID: 28502363 DOI: 10.1016/j.rmr.2017.03.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- C Girault
- Service de réanimation médicale, institut de recherche et d'innovation biomédicale (IRIB), hôpital Charles-Nicolle, hôpitaux de Rouen, groupe de recherche sur le Handicap ventilatoire (GRHV), UPRES EA 3830, faculté de médecine et de pharmacie, université de Rouen, CHU de Rouen, 76031 Rouen cedex, France
| | - A Gacouin
- Inserm-CIC, service des maladies infectieuses et réanimation médicale, hôpital Pontchaillou, CHU de Rennes, 35043 Rennes, France.
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Schädler D, Miestinger G, Becher T, Frerichs I, Weiler N, Hörmann C. Automated control of mechanical ventilation during general anaesthesia: study protocol of a bicentric observational study (AVAS). BMJ Open 2017; 7:e014742. [PMID: 28495814 PMCID: PMC5566603 DOI: 10.1136/bmjopen-2016-014742] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
INTRODUCTION Automated control of mechanical ventilation during general anaesthesia is not common. A novel system for automated control of most of the ventilator settings was designed and is available on an anaesthesia machine. METHODS AND ANALYSIS The 'Automated control of mechanical ventilation during general anesthesia study' (AVAS) is an international investigator-initiated bicentric observational study designed to examine safety and efficacy of the system during general anaesthesia. The system controls mechanical breathing frequency, inspiratory pressure, pressure support, inspiratory time and trigger sensitivity with the aim to keep a patient stable in user adoptable target zones. Adult patients, who are classified as American Society of Anesthesiologists physical status I, II or III, scheduled for elective surgery of the upper or lower limb or for peripheral vascular surgery in general anaesthesia without any additional regional anaesthesia technique and who gave written consent for study participation are eligible for study inclusion. Primary endpoint of the study is the frequency of specifically defined adverse events. Secondary endpoints are frequency of normoventilation, hypoventilation and hyperventilation, the time period between switch from controlled ventilation to assisted ventilation, achievement of stable assisted ventilation of the patient, proportion of time within the target zone for tidal volume, end-tidal partial pressure of carbon dioxide as individually set up for each patient by the user, frequency of alarms, frequency distribution of tidal volume, inspiratory pressure, inspiration time, expiration time, end-tidal partial pressure of carbon dioxide and the number of re-intubations. ETHICS AND DISSEMINATION AVAS will be the first clinical study investigating a novel automated system for the control of mechanical ventilation on an anaesthesia machine. The study was approved by the ethics committees of both participating study sites. In case that safety and efficacy are acceptable, a randomised controlled trial comparing the novel system with the usual practice may be warranted. TRIAL REGISTRATION DRKS DRKS00011025, registered 12 October 2016; clinicaltrials.gov ID. NCT02644005, registered 30 December 2015.
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Affiliation(s)
- Dirk Schädler
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Georg Miestinger
- Department of Anesthesiology and Intensive Care Medicine, University Hospital St. Pölten, St. Pölten, Austria
| | - Tobias Becher
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Inéz Frerichs
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Norbert Weiler
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Christoph Hörmann
- Department of Anesthesiology and Intensive Care Medicine, University Hospital St. Pölten, St. Pölten, Austria
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Nardi N, Mortamet G, Ducharme-Crevier L, Emeriaud G, Jouvet P. Recent Advances in Pediatric Ventilatory Assistance. F1000Res 2017; 6:290. [PMID: 28413621 PMCID: PMC5365224 DOI: 10.12688/f1000research.10408.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/16/2017] [Indexed: 01/17/2023] Open
Abstract
In this review on respiratory assistance, we aim to discuss the following recent advances: the optimization and customization of mechanical ventilation, the use of high-frequency oscillatory ventilation, and the role of noninvasive ventilation. The prevention of ventilator-induced lung injury and diaphragmatic dysfunction is now a key aspect in the management of mechanical ventilation, since these complications may lead to higher mortality and prolonged length of stay in intensive care units. Different physiological measurements, such as esophageal pressure, electrical activity of the diaphragm, and volumetric capnography, may be useful objective tools to help guide ventilator assistance. Companies that design medical devices including ventilators and respiratory monitoring platforms play a key role in knowledge application. The creation of a ventilation consortium that includes companies, clinicians, researchers, and stakeholders could be a solution to promote much-needed device development and knowledge implementation.
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Affiliation(s)
- Nicolas Nardi
- Pediatric Intensive Care Unit, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada
| | - Guillaume Mortamet
- Pediatric Intensive Care Unit, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada
| | | | - Guillaume Emeriaud
- Pediatric Intensive Care Unit, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada
| | - Philippe Jouvet
- Pediatric Intensive Care Unit, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada
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Schädler D, Kaiser L, Malchow B, Becher T, Elke G, Frerichs I, Küchler T, Weiler N. [Health-related quality of life after mechanical ventilation in the intensive care unit]. Anaesthesist 2017; 66:240-248. [PMID: 28175941 DOI: 10.1007/s00101-017-0276-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 01/10/2017] [Accepted: 01/15/2017] [Indexed: 11/24/2022]
Abstract
BACKGROUND It is unknown whether health related quality of life measured in German patients one year after mechanical ventilation in the intensive care unit is impaired or not. OBJECTIVES The aim of this study was to assess health related quality of life one year after inclusion into a randomized controlled trial for weaning from mechanical ventilation with the help of a questionnaire that has never been used in critically ill patients and to investigate whether health related quality of life scores differ between the study population and a general German population. METHODS We followed up with patients one year after inclusion into a randomized control trial investigating the effect of SmartCare/PS on total ventilation time compared to protocol-driven weaning (ASOPI trial, clinicaltrials.gov ID00445289). Health related quality of life was measured using the quality of life questionnaire C‑30 version 3.0 from the European Organization of Research and Treatment of Cancer (EORTC). Mean differences of at least 10 score points in the quality of life scales were considered clinically significant. RESULTS Of the 232 patients who were alive 90 days after study inclusion, 24 patients died one year after study inclusion and 64 patients were lost to follow-up. Of the remaining145 patients who were successfully contacted, 126 patients agreed to fill out the questionnaire. Questionnaires were sent back to the study site by 83 patients and these were analyzed. Health-related quality of life was significantly lower in five of the six functional scales (physical functioning, role functioning, cognitive functioning, social functioning, global health status) and in eight of the nine symptom scales (fatigue, pain, dyspnea, insomnia, appetite loss, constipation, diarrhea, financial difficulties) compared to the reference values of a German normal population. CONCLUSIONS The EORTC QLQ-C30 questionnaire is suitable for the acquisition of the health-related quality of life in formerly critically ill patients. Health-related quality of life is severely impaired after mechanical ventilation in the intensive care unit. Future studies should consider health related quality of life as a possible study endpoint.
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Affiliation(s)
- D Schädler
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, Haus 12, 24105, Kiel, Deutschland.
| | - L Kaiser
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, Haus 12, 24105, Kiel, Deutschland
| | - B Malchow
- Zentrum für Lebensqualität, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| | - T Becher
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, Haus 12, 24105, Kiel, Deutschland
| | - G Elke
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, Haus 12, 24105, Kiel, Deutschland
| | - I Frerichs
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, Haus 12, 24105, Kiel, Deutschland
| | - T Küchler
- Zentrum für Lebensqualität, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Deutschland
| | - N Weiler
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, Haus 12, 24105, Kiel, Deutschland
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Evidence based expert consensus for early rehabilitation in the intensive care unit. ACTA ACUST UNITED AC 2017. [DOI: 10.3918/jsicm.24_255] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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