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Crescioli E, Riis JØ, Weinreich UM, Jensen JUS, Poulsen LM, Brøchner AC, Lange T, Perner A, Klitgaard TL, Schjørring OL, Rasmussen BS. Long-term cognitive and pulmonary functions following a lower versus a higher oxygenation target in the HOT-ICU and HOT-COVID trials: A protocol update. Acta Anaesthesiol Scand 2024; 68:575-578. [PMID: 38272985 DOI: 10.1111/aas.14379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 01/15/2024] [Indexed: 01/27/2024]
Abstract
BACKGROUND The Handling Oxygenation Targets in the Intensive Care Unit (HOT-ICU) trial was a multicentre, randomised, parallel-group trial of a lower oxygenation target (arterial partial pressure of oxygen [PaO2 ] = 8 kPa) versus a higher oxygenation target (PaO2 = 12 kPa) in adult ICU patients with acute hypoxaemic respiratory failure; the Handling Oxygenation Targets in coronavirus disease 2019 (HOT-COVID) tested the same oxygenation targets in patients with confirmed COVID-19. In this study, we aim to evaluate the long-term effects of these oxygenation targets on cognitive and pulmonary function. We hypothesise that a lower oxygenation target throughout the ICU stay may result in cognitive impairment, whereas a higher oxygenation target may result in impaired pulmonary function. METHODS This is the updated protocol and statistical analysis plan of two pre-planned secondary outcomes, the long-term cognitive function, and long-term pulmonary function, in the HOT-ICU and HOT-COVID trials. Patients enrolled in both trials at selected Danish sites and surviving to 1 year after randomisation are eligible to participate. A Repeatable Battery for the Assessment of Neuropsychological Status score and a full-body plethysmography, including diffusion capacity for carbon monoxide, will be obtained. The last patient is expected to be included in the spring of 2024. CONCLUSION This study will provide important information on the long-term effects of a lower versus a higher oxygenation target on long-term cognitive and pulmonary functions in adult ICU patients with acute hypoxaemic respiratory failure.
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Affiliation(s)
- Elena Crescioli
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Jens Østergaard Riis
- Department of Neurology and Neurosurgery, Aalborg University Hospital, Aalborg, Denmark
| | - Ulla Møller Weinreich
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Department of Respiratory Medicine, Aalborg University Hospital, Aalborg, Denmark
| | - Jens Ulrik Staehr Jensen
- Section of Respiratory Medicine, Department of Medicine, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | | | - Anne Craveiro Brøchner
- Department of Anaesthesia and Intensive Care, Kolding Hospital, University of Southern Denmark, Kolding, Denmark
| | - Theis Lange
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Anders Perner
- Department of Intensive Care, Rigshospitalet, Copenhagen, Denmark
| | - Thomas Lass Klitgaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Bodil Steen Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Kaas-Hansen BS, Granholm A, Sivapalan P, Anthon CT, Schjørring OL, Maagaard M, Kjaer MBN, Mølgaard J, Ellekjaer KL, Fagerberg SK, Lange T, Møller MH, Perner A. Real-world causal evidence for planned predictive enrichment in critical care trials: A scoping review. Acta Anaesthesiol Scand 2024; 68:16-25. [PMID: 37649412 DOI: 10.1111/aas.14321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/01/2023] [Accepted: 08/12/2023] [Indexed: 09/01/2023]
Abstract
BACKGROUND Randomised clinical trials in critical care are prone to inconclusiveness due, in part, to undue optimism about effect sizes and suboptimal accounting for heterogeneous treatment effects. Although causal evidence from rich real-world critical care can help overcome these challenges by informing predictive enrichment, no overview exists. METHODS We conducted a scoping review, systematically searching 10 general and speciality journals for reports published on or after 1 January 2018, of randomised clinical trials enrolling adult critically ill patients. We collected trial metadata on 22 variables including recruitment period, intervention type and early stopping (including reasons) as well as data on the use of causal evidence from secondary data for planned predictive enrichment. RESULTS We screened 9020 records and included 316 unique RCTs with a total of 268,563 randomised participants. One hundred seventy-three (55%) trials tested drug interventions, 101 (32%) management strategies and 42 (13%) devices. The median duration of enrolment was 2.2 (IQR: 1.3-3.4) years, and 83% of trials randomised less than 1000 participants. Thirty-six trials (11%) were restricted to COVID-19 patients. Of the 55 (17%) trials that stopped early, 23 (42%) used predefined rules; futility, slow enrolment and safety concerns were the commonest stopping reasons. None of the included RCTs had used causal evidence from secondary data for planned predictive enrichment. CONCLUSION Work is needed to harness the rich multiverse of critical care data and establish its utility in critical care RCTs. Such work will likely need to leverage methodology from interventional and analytical epidemiology as well as data science.
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Affiliation(s)
- Benjamin Skov Kaas-Hansen
- Department of Intensive Care, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Anders Granholm
- Department of Intensive Care, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Praleene Sivapalan
- Department of Intensive Care, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Carl Thomas Anthon
- Department of Intensive Care, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Mathias Maagaard
- Centre for Anaesthesiological Research, Department of Anaesthesiology, Zealand University Hospital, Køge, Denmark
| | | | - Jesper Mølgaard
- Department of Anesthesiology, Centre for Cancer and Organ Dysfunction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Karen Louise Ellekjaer
- Department of Intensive Care, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Steen Kåre Fagerberg
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - Theis Lange
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Morten Hylander Møller
- Department of Intensive Care, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Anders Perner
- Department of Intensive Care, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
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Granholm A, Schjørring OL, Jensen AKG, Kaas-Hansen BS, Munch MW, Klitgaard TL, Crescioli E, Kjaer MBN, Strøm T, Lange T, Perner A, Rasmussen BS, Møller MH. Association between days alive without life support/out of hospital and health-related quality of life. Acta Anaesthesiol Scand 2023; 67:762-771. [PMID: 36915265 DOI: 10.1111/aas.14231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 02/28/2023] [Accepted: 03/07/2023] [Indexed: 03/16/2023]
Abstract
BACKGROUND Trials in critically ill patients increasingly focus on days alive without life support (DAWOLS) or days alive out of hospital (DAOOH) and health-related quality of life (HRQoL). DAWOLS and DAOOH convey more information than mortality and are simpler and faster to collect than HRQoL. However, whether these outcomes are associated with HRQoL is uncertain. We thus aimed to assess the associations between DAWOLS and DAOOH and long-term HRQoL. METHODS Secondary analysis of the COVID STEROID 2 trial including adults with COVID-19 and severe hypoxaemia and the Handling Oxygenation Targets in the Intensive Care Unit (HOT-ICU) trial including adult intensive care unit patients with acute hypoxaemic respiratory failure. Associations between DAWOLS and DAOOH at day 28 and 90 and long-term HRQoL (after 6 or 12 months) using the EuroQol 5-dimension 5-level survey (EQ VAS and EQ-5D-5L index values) were assessed using flexible models and evaluated using measures of fit and prediction adequacy in both datasets (comprising internal performance and external validation), non-parametric correlation coefficients and graphical presentations. RESULTS We found no strong associations between DAWOLS or DAOOH and HRQoL in survivors at HRQoL-follow-up (615 and 1476 patients, respectively). There was substantial variability in outcomes, and predictions from the best fitted models were poor both internally and externally in the other trial dataset, which also showed inadequate calibration. Moderate associations were found when including non-survivors, although predictions remained uncertain and calibration inadequate. CONCLUSION DAWOLS and DAOOH were poorly associated with HRQoL in adult survivors of severe or critical illness included in the COVID STEROID 2 and HOT-ICU trials.
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Affiliation(s)
- Anders Granholm
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Olav Lilleholt Schjørring
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Aksel Karl Georg Jensen
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Benjamin Skov Kaas-Hansen
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Marie Warrer Munch
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Thomas Lass Klitgaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
| | - Elena Crescioli
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Maj-Brit Nørregaard Kjaer
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Thomas Strøm
- Department of Anaesthesia and Critical Care Medicine, Odense University Hospital, Odense, Denmark
- Department of Anaesthesia and Critical Care Medicine, Hospital Sønderjylland, University Hospital of Southern Denmark, Odense, Denmark
| | - Theis Lange
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Anders Perner
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Bodil Steen Rasmussen
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Morten Hylander Møller
- Department of Intensive Care, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
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Nielsen FM, Klitgaard TL, Bruun NH, Møller MH, Schjørring OL, Rasmussen BS. Lower or higher oxygenation targets for acute Hypoxaemic respiratory failure: Protocol for an individual patient data meta-analysis. Acta Anaesthesiol Scand 2023; 67:811-819. [PMID: 36807011 DOI: 10.1111/aas.14220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 01/29/2023] [Indexed: 02/22/2023]
Abstract
BACKGROUND Supplemental oxygen therapy is central to the treatment of acute hypoxaemic respiratory failure, a condition which remains a major driver for morbidity and mortality in intensive care. Despite several large randomised clinical trials comparing a higher versus a lower oxygenation target for these patients, significant differences in study design impede analysis of aggregate data and final clinical recommendations. METHODS This paper presents the protocol for conducting an individual patient data meta-analysis where full individual patient data according to the intention-to-treat principle will be pooled from the HOT-ICU and HOT-COVID trials in a one-step procedure. The two trials are near-identical in design. We plan to use a hierarchical general linear mixed model that accounts for data clustering at a trial and site level. The primary outcome will be 90-day all-cause mortality while the secondary outcome will be days alive without life-support at 90 days. Further, we outline 14 clinically relevant predefined subgroups which we will analyse for heterogeneity in the intervention effects and interactions, and we present a plan for assessing the credibility of the subgroup analyses. CONCLUSION The presented individual patient data meta-analysis will synthesise individual level patient data from two of the largest randomised clinical trials on targeted oxygen therapy in intensive care. The results will provide a re-analysis of the intervention effects on the pooled intention-to-treat populations and facilitate subgroup analyses with an increased power to detect clinically important effect modifications.
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Affiliation(s)
- Frederik Mølgaard Nielsen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Thomas Lass Klitgaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Niels Henrik Bruun
- Unit of Clinical Biostatistics, Aalborg University Hospital, Aalborg, Denmark
| | - Morten Hylander Møller
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
- Department of Intensive Care, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
| | - Bodil Steen Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Collaboration for Research in Intensive Care (CRIC), Copenhagen, Denmark
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Crescioli E, Lass Klitgaard Klitgaard T, Perner A, Lilleholt Schjørring O, Steen Rasmussen B. Lower versus higher oxygenation targets in hypoxaemic ICU patients after cardiac arrest. Resuscitation 2023:109838. [PMID: 37196799 DOI: 10.1016/j.resuscitation.2023.109838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/18/2023] [Accepted: 05/09/2023] [Indexed: 05/19/2023]
Abstract
AIM To investigate the effects of lower versus higher oxygenation targets in adult intensive care unit (ICU) patients with hypoxaemic respiratory failure after cardiac arrest. METHODS Subgroup analysis of the international Handling Oxygenation Targets in the ICU (HOT-ICU) trial which randomised 2928 adults with acute hypoxaemia to targets of arterial oxygenation of 8 kPa or 12 kPa in the ICU for up to 90 days. Here, we report all outcomes up to one year in the subgroup of patients enrolled after cardiac arrest. RESULTS The HOT-ICU trial included 335 patients after cardiac arrest: 149 in the lower-oxygenation group and 186 in the higher-oxygenation group. At 90 days, 96/147 patients (65.3%) in the lower-oxygenation group and 111/185 patients (60.0%) in the higher-oxygenation group had died (adjusted relative risk (RR) 1.09, 95% confidence interval (CI) 0.92-1.28, p=0.32); similar results were found at one year (adjusted RR 1.05, 95% CI 0.90-1.21, p=0.53). Serious adverse events (SAEs) in the ICU occurred in 23% of patients in the lower-oxygenation group and 38% in the higher-oxygenation group (adjusted RR 0.61, 95% CI 0.43-0.86, p=0.005); the difference was mainly due to more new episodes of shock in the higher-oxygenation group. No statistically significant differences were observed in other secondary outcomes. CONCLUSION A lower oxygenation target in adult ICU patients with hypoxaemic respiratory failure after cardiac arrest did not result in lower mortality, but fewer SAEs occurred in this group compared to the higher-oxygenation group. All analyses are exploratory only, large-scale trials are needed for confirmation. CLINICAL TRIAL REGISTRY Clinicaltrials.gov number NCT03174002 (registered May 30, 2017); EudraCT 2017-000632-34 (registered February 14, 2017).
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Affiliation(s)
- Elena Crescioli
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.
| | | | - Anders Perner
- Department of Intensive Care, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Bodil Steen Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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Granholm A, Kaas-Hansen BS, Lange T, Schjørring OL, Andersen LW, Perner A, Jensen AKG, Møller MH. An overview of methodological considerations regarding adaptive stopping, arm dropping, and randomization in clinical trials. J Clin Epidemiol 2023; 153:45-54. [PMID: 36400262 DOI: 10.1016/j.jclinepi.2022.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 10/17/2022] [Accepted: 11/02/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND AND OBJECTIVES Adaptive features may increase flexibility and efficiency of clinical trials, and improve participants' chances of being allocated to better interventions. Our objective is to provide thorough guidance on key methodological considerations for adaptive clinical trials. METHODS We provide an overview of key methodological considerations for clinical trials employing adaptive stopping, adaptive arm dropping, and response-adaptive randomization. We cover pros and cons of different decisions and provide guidance on using simulation to compare different adaptive trial designs. We focus on Bayesian multi-arm adaptive trials, although the same general considerations apply to frequentist adaptive trials. RESULTS We provide guidance on 1) interventions and possible common control, 2) outcome selection, follow-up duration and model choice, 3) timing of adaptive analyses, 4) decision rules for adaptive stopping and arm dropping, 5) randomization strategies, 6) performance metrics, their prioritization, and arm selection strategies, and 7) simulations, assessment of performance under different scenarios, and reporting. Finally, we provide an example using a newly developed R simulation engine that may be used to evaluate and compare different adaptive trial designs. CONCLUSION This overview may help trialists design better and more transparent adaptive clinical trials and to adequately compare them before initiation.
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Affiliation(s)
- Anders Granholm
- Department of Intensive Care, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
| | - Benjamin Skov Kaas-Hansen
- Department of Intensive Care, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Theis Lange
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Lars W Andersen
- Research Center for Emergency Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark; Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark; Prehospital Emergency Medical Services, Central Denmark Region, Aarhus, Denmark
| | - Anders Perner
- Department of Intensive Care, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Aksel Karl Georg Jensen
- Section of Biostatistics, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Morten Hylander Møller
- Department of Intensive Care, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
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7
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Kaas‐Hansen BS, Granholm A, Anthon CT, Kjær MN, Sivapalan P, Maagaard M, Schjørring OL, Fagerberg SK, Ellekjær KL, Mølgaard J, Ekstrøm CT, Møller MH, Perner A. Causal inference for planning randomised critical care trials: Protocol for a scoping review. Acta Anaesthesiol Scand 2022; 66:1274-1278. [PMID: 36054374 PMCID: PMC9826202 DOI: 10.1111/aas.14142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 08/17/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Randomised clinical trials in critical care are prone to inconclusiveness owing, in part, to undue optimism about effect sizes and suboptimal accounting for heterogeneous treatment effects. Planned predictive enrichment based on secondary critical care data (often very rich with respect to both data types and temporal granularity) and causal inference methods may help overcome these challenges, but no overview exists about their use to this end. METHODS We will conduct a scoping review to assess the extent and nature of the use of causal inference from secondary data for planned predictive enrichment of randomised clinical trials in critical care. We will systematically search 10 general and specialty journals for reports published on or after 1 January 2018, of randomised clinical trials enrolling adult critically ill patients. We will collect trial metadata (e.g., recruitment period and phase) and, when available, information pertaining to the focus of the review (predictive enrichment based on causal inference estimates from secondary data): causal inference methods, estimation techniques and software used; types of patient populations; data provenance, types and models; and the availability of the data (public or not). The results will be reported in a descriptive manner. DISCUSSION The outlined scoping review aims to assess the use of causal inference methods and secondary data for planned predictive enrichment in randomised critical care trials. This will help guide methodological improvements to increase the utility, and facilitate the use, of causal inference estimates when planning such trials in the future.
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Affiliation(s)
- Benjamin Skov Kaas‐Hansen
- Department of Intensive CareCopenhagen University HospitalCopenhagenDenmark,Section for Biostatistics, Department of Public HealthUniversity of CopenhagenCopenhagenDenmark
| | - Anders Granholm
- Department of Intensive CareCopenhagen University HospitalCopenhagenDenmark
| | - Carl Thomas Anthon
- Department of Intensive CareCopenhagen University HospitalCopenhagenDenmark
| | | | - Praleene Sivapalan
- Department of Intensive CareCopenhagen University HospitalCopenhagenDenmark
| | - Mathias Maagaard
- Department of Anaesthesiology, Centre for Anaesthesiological Research, Zealand University Hospital KøgeKøgeDenmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive CareAalborg University HospitalAalborgDenmark,Department of Clinical MedicineAalborg UniversityAalborgDenmark
| | - Steen Kåre Fagerberg
- Department of Anaesthesia and Intensive CareAalborg University HospitalAalborgDenmark
| | | | - Jesper Mølgaard
- Department of Anesthesiology, Centre for Cancer and Organ DysfunctionCopenhagen University HospitalCopenhagenDenmark
| | - Claus Thorn Ekstrøm
- Section for Biostatistics, Department of Public HealthUniversity of CopenhagenCopenhagenDenmark
| | | | - Anders Perner
- Department of Intensive CareCopenhagen University HospitalCopenhagenDenmark
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8
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Crescioli E, Krejberg KU, Klitgaard TL, Mølgaard Nielsen F, Barbateskovic M, Skrubbeltrang C, Møller MH, Schjørring OL, Rasmussen BS. Long-term effects of lower versus higher oxygenation levels in adult ICU patients - a systematic review. Acta Anaesthesiol Scand 2022; 66:910-922. [PMID: 35749059 PMCID: PMC9540426 DOI: 10.1111/aas.14107] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 06/01/2022] [Accepted: 06/16/2022] [Indexed: 11/28/2022]
Abstract
Background Oxygen therapy is a common treatment in the intensive care unit (ICU) with both potentially desirable and undesirable long‐term effects. This systematic review aimed to assess the long‐term outcomes of lower versus higher oxygenation strategies in adult ICU survivors. Methods We included randomised clinical trials (RCTs) comparing lower versus higher oxygen supplementation or oxygenation strategies in adults admitted to the ICU. We searched major electronic databases and trial registers. We included all non‐mortality long‐term outcomes. Prespecified co‐primary outcomes were the long‐term cognitive function measures, the overall score of any valid health‐related quality of life (HRQoL) evaluation, standardised 6‐min walk test, and lung diffusion capacity. The protocol was published and prospectively registered in the PROSPERO database (CRD42021223630). Results The review included 17 RCTs comprising 6592 patients, and six trials with 825 randomised patients reported one or more outcomes of interest. We observed no difference in cognitive evaluation via Telephone Interview for Cognitive Status (one trial, 409 patients) (mean score: 30.6 ± 4.5 in the lower oxygenation group vs. 30.4 ± 4.3 in the higher oxygenation group). The trial was judged at overall high risk of bias and the certainty of evidence was very low. Any difference was neither observed in HRQoL measured via EuroQol 5 dimensions 5 level questionnaire and EQ Visual Analogue Score (one trial, 499 patients) (mean score: 70.1 ± 22 in the lower oxygenation group vs. 67.6 ± 22.4 in the higher oxygenation group). The trial was judged as having high risk of bias, the certainty of evidence was very low. No trial reported neither the standardised 6‐min walk test nor lung diffusion test. Conclusion The evidence is very uncertain about the effect of a lower versus a higher oxygenation strategy on both the cognitive function and HRQoL. A lower versus a higher oxygenation strategy may have a little to no effect on both outcomes but the certainty of evidence is very low. No evidence was found for the effects on the standardised 6‐min walking test and diffusion capacity test.
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Affiliation(s)
- Elena Crescioli
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | | | - Thomas Lass Klitgaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Frederik Mølgaard Nielsen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Marija Barbateskovic
- Copenhagen Trial Unit, Centre for Clinical Intervention Research, Capital Region of Denmark, Denmark
| | | | - Morten Hylander Møller
- Department of Intensive Care, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Bodil Steen Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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9
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Mølgaard Nielsen F, Lass Klitgaard T, Granholm A, Lange T, Perner A, Lilleholt Schjørring O, Steen Rasmussen B. Higher versus lower oxygenation targets in COVID-19 patients with severe hypoxaemia (HOT-COVID) trial: Protocol for a secondary Bayesian analysis. Acta Anaesthesiol Scand 2022; 66:408-414. [PMID: 34951717 DOI: 10.1111/aas.14023] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 12/27/2021] [Accepted: 12/17/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Respiratory failure is the main cause of mortality and morbidity among ICU patients with coronavirus disease 2019 (COVID-19). In these patients, supplemental oxygen therapy is essential, but there is limited evidence the optimal target. To address this, the ongoing handling oxygenation targets in COVID-19 (HOT-COVID) trial was initiated to investigate the effect of a lower oxygenation target (partial pressure of arterial oxygen (PaO2 ) of 8 kPa) versus a higher oxygenation target (PaO2 of 12 kPa) in the ICU on clinical outcome in patients with COVID-19 and hypoxaemia. METHODS The HOT-COVID is planned to enrol 780 patients. This paper presents the protocol and statistical analysis plan for the conduct of a secondary Bayesian analysis of the primary outcome of HOT-COVID being days alive without life-support at 90 days and the secondary outcome 90-day all-cause mortality. Furthermore, both outcomes will be investigated for the presence heterogeneity of treatment effects based on four baseline parameters being sequential organ failure assessment score, PaO2 /fraction of inspired oxygen ratio, highest dose of norepinephrine during the 24 h before randomisation, and plasma concentration of lactate at randomisation. CONCLUSION The results of this pre-planned secondary Bayesian analysis will complement the primary frequentist analysis of the HOT-COVID trial and may facilitate a more nuanced interpretation of the trial results.
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Affiliation(s)
- Frederik Mølgaard Nielsen
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
| | - Thomas Lass Klitgaard
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
| | - Anders Granholm
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
- Department of Intensive Care Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
| | - Theis Lange
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
- Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
| | - Anders Perner
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
- Department of Intensive Care Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
| | - Bodil Steen Rasmussen
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
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10
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Granholm A, Schjørring OL, Jensen AKG, Kaas‐Hansen BS, Munch MW, Klitgaard TL, Crescioli E, Kjær MN, Strøm T, Perner A, Rasmussen BS, Møller MH. Health-related quality of life and days alive without life support or out of hospital: Protocol. Acta Anaesthesiol Scand 2022; 66:295-301. [PMID: 34811741 DOI: 10.1111/aas.14001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 11/07/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Mortality is often the primary outcome in randomised clinical trials (RCTs) conducted in critically ill patients. Due to increased awareness on survivors after critical illness and outcomes other than mortality, health-related quality of life (HRQoL) and days alive without life support (DAWOLS) or days alive and out of hospital (DAAOOH) are increasingly being used. DAWOLS and DAAOOH convey more information than mortality, are easier to collect than HRQoL, and are usually assessed at earlier time points, which may be preferable in some situations. However, the associations between DAWOLS-DAAOOH and HRQoL are uncertain. METHODS We will assess associations between DAWOLS-DAAOOH at day 28 and 90 (independent variables/predictors) and HRQoL assessed using the EuroQol EQ-5D-5L questionnaire (EQ-VAS and EQ-5D-5L index values) at 6 or 12 months (dependent variables) in two RCTs: the COVID STEROID 2 RCT conducted in adult patients with COVID-19 and severe hypoxaemia and the Handling Oxygenation Targets in the Intensive Care Unit (HOT-ICU) RCT conducted in adult intensive care patients with acute hypoxaemic respiratory failure. We will describe associations using best-fitting fractional polynomial transformations separately in each dataset, with the resulting models presented and assessed in both datasets graphically and using measures of fit and prediction adequacy (i.e., internal performance and external validation). We will use multiple imputation if missingness exceeds 5%. DISCUSSION The outlined study will provide important knowledge on the associations between DAWOLS-DAAOOH and HRQoL in adult critically ill patients, which may help researchers and clinical trialists prioritise and select outcomes in future RCTs conducted in this population.
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Affiliation(s)
- Anders Granholm
- Department of Intensive Care Copenhagen University Hospital – Rigshospitalet Copenhagen Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
| | - Olav Lilleholt Schjørring
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
| | - Aksel Karl Georg Jensen
- Section of Biostatistics, Department of Public Health University of Copenhagen Copenhagen Denmark
| | - Benjamin Skov Kaas‐Hansen
- Section of Biostatistics, Department of Public Health University of Copenhagen Copenhagen Denmark
- Clinical Pharmacology Unit Zealand University Hospital Roskilde Denmark
| | - Marie Warrer Munch
- Department of Intensive Care Copenhagen University Hospital – Rigshospitalet Copenhagen Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
| | - Thomas Lass Klitgaard
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
| | - Elena Crescioli
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
| | - Maj‐Brit Nørregaard Kjær
- Department of Intensive Care Copenhagen University Hospital – Rigshospitalet Copenhagen Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
| | - Thomas Strøm
- Department of Anaesthesia and Critical Care Medicine Odense University Hospital Odense Denmark
- Department of Anaesthesia and Critical Care Medicine Hospital Sønderjylland, University Hospital of Southern Denmark Odense Denmark
| | - Anders Perner
- Department of Intensive Care Copenhagen University Hospital – Rigshospitalet Copenhagen Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
| | - Bodil Steen Rasmussen
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
| | - Morten Hylander Møller
- Department of Intensive Care Copenhagen University Hospital – Rigshospitalet Copenhagen Denmark
- Collaboration for Research in Intensive Care (CRIC) Copenhagen Denmark
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11
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Crescioli E, Uldal Krejberg K, Lass Klitgaard T, Mølgaard Nielsen F, Barbateskovic M, Skrubbeltrang C, Hylander Møller M, Lilleholt Schjørring O, Steen Rasmussen B. The long-term effects of lower versus higher oxygenation levels in adult ICU patients - protocol for a systematic review. Acta Anaesthesiol Scand 2022; 66:145-151. [PMID: 34570915 PMCID: PMC8652878 DOI: 10.1111/aas.13984] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 09/20/2021] [Indexed: 01/04/2023]
Abstract
Background Many organs can remain impaired after discharge from the intensive care unit (ICU) leading to temporal or permanent dysfunctions. Long‐term impairments may be affected by supplemental oxygen, a common treatment in ICU, having both potential beneficial and harmful long‐lasting effects. This systematic review aims to assess the long‐term outcomes of lower versus higher oxygen supplementation and/or oxygenation levels in adults admitted to ICU. Methods We will include trials differentiating between a lower and a higher oxygen supplementation or a lower and a higher oxygenation strategy in adults admitted to the ICU. We will search major electronic databases and trial registers for randomised clinical trials. Two authors will independently screen and select references for inclusion using Covidence and predefined data will be extracted. The methodological quality and risk of bias of included trials will be evaluated using the Cochrane Risk of Bias tool 2. Meta‐analysis will be performed if two or more trials with comparable outcome measures will be included. Otherwise, a narrative description of the trials’ results will be presented instead. To assess the certainty of evidence, we will create a ‘Summary of findings’ table containing all prespecified outcomes using the GRADE system. The protocol is submitted on the PROSPERO database (ID 223630). Conclusion No systematic reviews on the impact of oxygen treatment in the ICU on long‐term outcomes, other than mortality and quality of life, have been reported yet. This systematic review will provide an overview of the current evidence and will help future research in the field.
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Affiliation(s)
- Elena Crescioli
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care Copenhagen Denmark
| | | | - Thomas Lass Klitgaard
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care Copenhagen Denmark
| | - Frederik Mølgaard Nielsen
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care Copenhagen Denmark
| | - Marija Barbateskovic
- Copenhagen Trial Unit Centre for Clinical Intervention Research Capital Region of Denmark Denmark
| | | | - Morten Hylander Møller
- Collaboration for Research in Intensive Care Copenhagen Denmark
- Department of Intensive Care, Rigshospitalet University of Copenhagen Copenhagen Denmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care Copenhagen Denmark
| | - Bodil Steen Rasmussen
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care Copenhagen Denmark
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12
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Klitgaard TL, Schjørring OL, Nielsen FM, Meyhoff CS, Barbateskovic M, Wetterslev J, Perner A, Rasmussen BS. Letter the editor: serious methodological concerns about a recently published meta-analysis on oxygen therapy. J Intensive Care 2021; 9:72. [PMID: 34876227 PMCID: PMC8649324 DOI: 10.1186/s40560-021-00573-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 09/03/2021] [Indexed: 11/10/2022] Open
Abstract
In a recent paper, Chen et al. report the findings of a systematic review with meta-analysis concerning conservative versus conventional oxygen therapy for critically ill patients. We wish to commend the authors for their interest in the matter. However, the authors appear to misquote findings, fail to report results for all specified analyses, do not identify all relevant trials, have post hoc changed the eligibility criteria, and have seemingly switched directions of effects in analyses of secondary outcomes. These issues have led to incorrect conclusions concerning the effects of targeted oxygen therapy in critically ill patients.
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Affiliation(s)
- Thomas Lass Klitgaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark. .,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark. .,Collaboration for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.,Collaboration for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Frederik Mølgaard Nielsen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.,Collaboration for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Christian Sylvest Meyhoff
- Department of Anaesthesia and Intensive Care, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Marija Barbateskovic
- Copenhagen Trial Unit, Centre for Clinical Intervention Research, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Jørn Wetterslev
- Copenhagen Trial Unit, Centre for Clinical Intervention Research, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.,Collaboration for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Anders Perner
- Department of Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.,Collaboration for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Bodil Steen Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.,Collaboration for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
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13
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Mølgaard Nielsen F, Lass Klitgaard T, Crescioli E, Rosborg Aagaard S, Andreasen AS, Musaeus Poulsen L, Siegemund M, Craveiro Brøchner A, Bestle MH, Andi Iversen S, Brand BA, Laake JH, Grøfte T, Hildebrandt T, Lange T, Perner A, Lilleholt Schjørring O, Steen Rasmussen B. Handling oxygenation targets in ICU patients with COVID-19-Protocol and statistical analysis plan in the HOT-COVID trial. Acta Anaesthesiol Scand 2021; 65:1497-1504. [PMID: 34310694 PMCID: PMC8441913 DOI: 10.1111/aas.13956] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/29/2021] [Accepted: 07/16/2021] [Indexed: 12/30/2022]
Abstract
Background Coronavirus disease (COVID‐19) primarily affects the lungs and lower airways and may present as hypoxaemic respiratory failure requiring admission to an intensive care unit (ICU) for supportive treatment. Here, supplemental oxygen remains essential for COVID‐19 patient management, but the optimal dosage is not defined. We hypothesize that targeting an arterial partial pressure of oxygen of 8 kPa throughout ICU admission is superior to targeting 12 kPa. Methods The Handling Oxygenation Targets in ICU patients with COVID‐19 (HOT‐COVID) trial, is an investigator‐initiated, pragmatic, multicentre, randomized, parallel‐group trial comparing a lower oxygenation target versus a higher oxygenation target in adult ICU patients with COVID‐19. The primary outcome is days alive without life‐support (use of mechanical ventilation, renal replacement therapy or vasoactive therapy) at day 90. Secondary outcomes are 90‐day and 1‐year mortality, serious adverse events in the ICU and days alive and out of hospital in the 90‐day period, health‐related quality‐of‐life at 1 year, and health economic analyses. One‐year follow‐up of cognitive and pulmonary function is planned in a subgroup of Danish patients. We will include 780 patients to detect or reject an absolute increase in days alive without life‐support of 7 days with an α of 5% and a β of 20%. An interim analysis is planned after 90‐day follow‐up of 390 patients. Conclusions The HOT‐COVID trial will provide patient‐important data on the effect of two oxygenation targets in ICU patients with COVID‐19 and hypoxia. This protocol paper describes the background, design and statistical analysis plan for the trial.
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Affiliation(s)
- Frederik Mølgaard Nielsen
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC Copenhagen Denmark
| | - Thomas Lass Klitgaard
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC Copenhagen Denmark
| | - Elena Crescioli
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC Copenhagen Denmark
| | - Søren Rosborg Aagaard
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
| | | | - Lone Musaeus Poulsen
- Department of Anaesthesia and Intensive Care Zealand University Hospital Køge Denmark
| | - Martin Siegemund
- Department of Intensive Care Basel University Hospital Basel Switzerland
| | | | - Morten H. Bestle
- Collaboration for Research in Intensive Care (CRIC Copenhagen Denmark
- Department of Anaesthesia and Intensive Care Copenhagen University Hospital North Zealand Denmark
- Department of Anaesthesia and Intensive Care Slagelse Hospital Slagelse Denmark
| | - Susanne Andi Iversen
- Department of Intensive Care Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
| | - Björn A. Brand
- Department of Anaesthesia and Intensive Care Oslo University Hospital Rikshospitalet Norway
| | - Jon Henrik Laake
- Department of Anaesthesia and Intensive Care Randers Hospital Randers Denmark
| | - Thorbjørn Grøfte
- Department of Anaesthesia and Intensive Care Zealand University Hospital Roskilde Denmark
| | - Thomas Hildebrandt
- Department of Public Health Section of Biostatistics University of Copenhagen Copenhagen Denmark
| | - Theis Lange
- Collaboration for Research in Intensive Care (CRIC Copenhagen Denmark
- Department of Clinical Medicine University of Copenhagen Denmark
| | - Anders Perner
- Collaboration for Research in Intensive Care (CRIC Copenhagen Denmark
- Department of Anaesthesia and Intensive Care Oslo University Hospital Rikshospitalet Norway
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC Copenhagen Denmark
| | - Bodil Steen Rasmussen
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
- Collaboration for Research in Intensive Care (CRIC Copenhagen Denmark
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14
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Granholm A, Kaas‐Hansen BS, Kjær MN, Anthon CT, Sivapalan P, Schjørring OL, Andersen LW, Mathiesen O, Strøm T, Jensen AKG, Perner A, Møller MH. Patient-important outcomes other than mortality in recent ICU trials: Protocol for a scoping review. Acta Anaesthesiol Scand 2021; 65:1002-1007. [PMID: 34089522 DOI: 10.1111/aas.13937] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 05/29/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Randomised clinical trials (RCTs) conducted in intensive care units (ICUs) frequently focus on all-cause mortality, but other patient-important outcomes are increasingly used and recommended. Their use, however, is not straightforward: choices and definitions, operationalisation of death, handling of missing data, choice of effect measures, and statistical analyses for these outcomes vary greatly. METHODS We will conduct a scoping review in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews. We will search 10 selected general and speciality journals for RCTs conducted in adult ICU patients from 2018 and onwards reporting at least 1 patient-important outcome other than mortality (including days alive without life support/days alive and out of hospital-type outcomes, health-related quality of life, functional/cognitive/neurological outcomes, and other general patient-important outcomes). We will summarise data on outcome measures and definitions, assessment time points, proportions and handling of death, proportions and handling of missing data, and effect measures and statistical methods used for analysis. DISCUSSION The outlined scoping review will provide an overview of choices, definitions and handling of patient-important outcomes other than mortality in contemporary RCTs conducted in adult ICU patients. This may guide discussions with patients and relatives, the design of future RCTs, and research on optimal outcome choices and handling.
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Affiliation(s)
- Anders Granholm
- Department of Intensive Care Copenhagen University Hospital—Rigshospitalet Copenhagen Denmark
| | - Benjamin Skov Kaas‐Hansen
- NNF Center for Protein Research University of Copenhagen Copenhagen Denmark
- Clinical Pharmacology Unit Zealand University Hospital Roskilde Denmark
| | | | - Carl Thomas Anthon
- Department of Intensive Care Copenhagen University Hospital—Rigshospitalet Copenhagen Denmark
| | - Praleene Sivapalan
- Department of Intensive Care Copenhagen University Hospital—Rigshospitalet Copenhagen Denmark
| | - Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care Aalborg University Hospital Aalborg Denmark
- Department of Clinical Medicine Aalborg University Aalborg Denmark
| | - Lars W. Andersen
- Research Center for Emergency Medicine, Department of Clinical Medicine Aarhus University and Aarhus University Hospital Aarhus Denmark
- Department of Anesthesiology and Intensive Care Aarhus University Hospital Aarhus Denmark
- Prehospital Emergency Medical Services Central Denmark Region Aarhus Denmark
| | - Ole Mathiesen
- Centre for Anaesthesiological Research, Department of Anaesthesiology Zealand University Hospital Køge Denmark
- Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
| | - Thomas Strøm
- Department of Anaesthesia and Critical Care Medicine Odense University Hospital Odense Denmark
- Department of Anaesthesia and Critical Care Medicine Hospital Sønderjylland, University Hospital of Southern Denmark Odense Denmark
| | - Aksel Karl Georg Jensen
- Section of Biostatistics, Department of Public Health University of Copenhagen Copenhagen Denmark
| | - Anders Perner
- Department of Intensive Care Copenhagen University Hospital—Rigshospitalet Copenhagen Denmark
| | - Morten Hylander Møller
- Department of Intensive Care Copenhagen University Hospital—Rigshospitalet Copenhagen Denmark
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15
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Schjørring OL, Rasmussen BS. The paramount parameter: arterial oxygen tension versus arterial oxygen saturation as target in trials on oxygenation in intensive care. Crit Care 2018; 22:324. [PMID: 30466486 PMCID: PMC6251193 DOI: 10.1186/s13054-018-2257-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 11/06/2018] [Indexed: 01/12/2023]
Affiliation(s)
- Olav Lilleholt Schjørring
- Department of Anaesthesia and Intensive Care Medicine, Aalborg University Hospital, Hobrovej 18-22, 9000, Aalborg, Denmark. .,Department of Clinical Medicine, Aalborg University, Søndre Skovvej 15, 9000, Aalborg, Denmark.
| | - Bodil Steen Rasmussen
- Department of Anaesthesia and Intensive Care Medicine, Aalborg University Hospital, Hobrovej 18-22, 9000, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Søndre Skovvej 15, 9000, Aalborg, Denmark
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