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Nix HP, Meeker S, King CE, Andrew M, Davis IRC, Koto PS, Sim M, Murdoch J, Patriquin G, Theriault C, Reidy S, Rockwood M, Sampalli T, Searle SD, Rockwood K. Preventing Respiratory Viral Illness Invisibly (PRiVII): protocol for a pragmatic cluster randomized trial evaluating far-UVC light devices in long-term care facilities to reduce infections. Trials 2024; 25:88. [PMID: 38279184 PMCID: PMC10811883 DOI: 10.1186/s13063-024-07909-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 01/03/2024] [Indexed: 01/28/2024] Open
Abstract
BACKGROUND Respiratory viral illness (RVI)-e.g., influenza, COVID-19-is a serious threat in long-term care (LTC) facilities. Standard infection control measures are suboptimal in LTC facilities because of residents' cognitive impairments, care needs, and susceptibility to loneliness and mental illness. Further, LTC residents living with high degrees of frailty who contract RVIs often develop the so-called atypical symptoms (e.g., delirium, worse mobility) instead of typical cough and fever, delaying infection diagnosis and treatment. Although far-UVC (222 nm) light devices have shown potent antiviral activity in vitro, clinical efficacy remains unproven. METHODS Following a study to assay acceptability at each site, this multicenter, double-blinded, cluster-randomized, placebo-controlled trial aims to assess whether far-UVC light devices impact the incidence of RVIs in LTC facilities. Neighborhoods within LTC facilities are randomized to receive far-UVC light devices (222 nm) or identical placebo light devices that emit only visible spectrum light (400-700 nm) in common areas. All residents are monitored for RVIs using both a standard screening protocol and a novel screening protocol that target atypical symptoms. The 3-year incidence of RVIs will be compared using intention-to-treat analysis. A cost-consequence analysis will follow. DISCUSSION This trial aims to inform decisions about whether to implement far-UVC light in LTC facilities for RVI prevention. The trial design features align with this pragmatic intent. Appropriate additional ethical protections have been implemented to mitigate participant vulnerabilities that arise from conducting this study. Knowledge dissemination will be supported through media engagement, peer-reviewed presentations, and publications. TRIAL REGISTRATION ClinicalTrials.gov NCT05084898. October 20, 2021.
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Affiliation(s)
- Hayden P Nix
- Geriatric Medicine Research, Halifax, NS, Canada.
- Department of Medicine, Dalhousie University, Halifax, NS, Canada.
| | | | - Caroline E King
- Research, Innovation and Discovery, Nova Scotia Health, Halifax, NS, Canada
| | - Melissa Andrew
- Department of Medicine, Dalhousie University, Halifax, NS, Canada
- Division of Geriatric Medicine, Dalhousie University, Halifax, NS, Canada
| | - Ian R C Davis
- Division of Infectious Diseases, Department of Medicine, Nova Scotia Health, Halifax, NS, Canada
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada
| | - Prosper S Koto
- Research Methods Unit, Nova Scotia Health, Halifax, NS, Canada
| | - Meaghan Sim
- Research, Innovation and Discovery, Nova Scotia Health, Halifax, NS, Canada
| | - Jennifer Murdoch
- Research, Innovation and Discovery, Nova Scotia Health, Halifax, NS, Canada
| | - Glenn Patriquin
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada
- Division of Microbiology, Department of Pathology and Laboratory Medicine, Nova Scotia Health, Halifax, NS, Canada
| | - Chris Theriault
- Research Methods Unit, Nova Scotia Health, Halifax, NS, Canada
| | - Stephanie Reidy
- Geriatric Medicine Research, Halifax, NS, Canada
- Division of Rheumatology, Nova Scotia Health, Halifax, NS, Canada
| | | | - Tara Sampalli
- Research, Innovation and Discovery, Nova Scotia Health, Halifax, NS, Canada
| | - Samuel D Searle
- Division of Geriatric Medicine, Dalhousie University, Halifax, NS, Canada
- Medical Research Council Unit for Lifelong Health and Ageing at University College London, University College London, London, UK
| | - Kenneth Rockwood
- Division of Geriatric Medicine, Dalhousie University, Halifax, NS, Canada
- Frailty & Elder Care Network, Nova Scotia Health, Halifax, NS, Canada
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Tsui A, Yeo N, Searle SD, Bowden H, Hoffmann K, Hornby J, Goslett A, Weston-Clarke M, Lanham D, Hogan P, Seeley A, Rawle M, Chaturvedi N, Sampson EL, Rockwood K, Cunningham C, Ely EW, Richardson SJ, Brayne C, Terrera GM, Tieges Z, MacLullich AMJ, Davis D. Extremes of baseline cognitive function determine the severity of delirium: a population study. Brain 2023; 146:2132-2141. [PMID: 36856697 PMCID: PMC10151184 DOI: 10.1093/brain/awad062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 12/21/2022] [Accepted: 01/23/2023] [Indexed: 03/02/2023] Open
Abstract
Although delirium is a significant clinical and public health problem, little is understood about how specific vulnerabilities underlie the severity of its presentation. Our objective was to quantify the relationship between baseline cognition and subsequent delirium severity. We prospectively investigated a population-representative sample of 1510 individuals aged ≥70 years, of whom 209 (13.6%) were hospitalized across 371 episodes (1999 person-days assessment). Baseline cognitive function was assessed using the modified Telephone Interview for Cognitive Status, supplemented by verbal fluency measures. We estimated the relationship between baseline cognition and delirium severity [Memorial Delirium Assessment Scale (MDAS)] and abnormal arousal (Observational Scale of Level of Arousal), adjusted by age, sex, frailty and illness severity. We conducted further analyses examining presentations to specific hospital settings and common precipitating aetiologies. The median time from baseline cognitive assessment to admission was 289 days (interquartile range 130 to 47 days). In admitted patients, delirium was present on at least 1 day in 45% of admission episodes. The average number of days with delirium (consecutively positive assessments) was 3.9 days. Elective admissions accounted for 88 bed days (4.4%). In emergency (but not elective) admissions, we found a non-linear U-shaped relationship between baseline global cognition and delirium severity using restricted cubic splines. Participants with baseline cognition 2 standard deviations below average (z-score = -2) had a mean MDAS score of 14 points (95% CI 10 to 19). Similarly, those with baseline cognition z-score = + 2 had a mean MDAS score of 7.9 points (95% CI 4.9 to 11). Individuals with average baseline cognition had the lowest MDAS scores. The association between baseline cognition and abnormal arousal followed a comparable pattern. C-reactive protein ≥20 mg/l and serum sodium <125 mM/l were associated with more severe delirium. Baseline cognition is a critical determinant of the severity of delirium and associated changes in arousal. Emergency admissions with lowest and highest baseline cognition who develop delirium should receive enhanced clinical attention.
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Affiliation(s)
- Alex Tsui
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
| | - Natalie Yeo
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
| | - Samuel D Searle
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
- Geriatric Medicine, Dalhousie University, Halifax, NS B3H 2E1, Canada
| | - Helen Bowden
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
| | - Katrin Hoffmann
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
| | - Joanne Hornby
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
| | - Arley Goslett
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
| | | | - David Lanham
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
| | - Patrick Hogan
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
| | - Anna Seeley
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
- Nuffield Department of Primary Care, University of Oxford, Oxford, OX2 6GG, UK
| | - Mark Rawle
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
| | - Nish Chaturvedi
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
| | | | - Kenneth Rockwood
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
- Geriatric Medicine, Dalhousie University, Halifax, NS B3H 2E1, Canada
| | - Colm Cunningham
- School of Biochemistry & Immunology, Trinity Biomedical Sciences Institute, Dublin 2, Republic of Ireland
| | - E Wesley Ely
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Sarah J Richardson
- AGE Research Group, Translational and Clinical Research Institute, Newcastle University, UK
| | - Carol Brayne
- Department of Public Health and Primary Care, University of Cambridge, UK
| | | | - Zoë Tieges
- Geriatric Medicine, Edinburgh Delirium Research Group, Usher Institute, University of Edinburgh, UK
- SMART Technology Centre, Glasgow Caledonian University, Glasgow, UK
| | - Alasdair M J MacLullich
- Geriatric Medicine, Edinburgh Delirium Research Group, Usher Institute, University of Edinburgh, UK
| | - Daniel Davis
- MRC Unit for Lifelong Health and Ageing at UCL, London, WC1E 7HB, UK
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Chitalu P, Tsui A, Searle SD, Davis D. Life-space, frailty, and health-related quality of life. BMC Geriatr 2022; 22:646. [PMID: 35931955 PMCID: PMC9356461 DOI: 10.1186/s12877-022-03355-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 07/30/2022] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Life-space and frailty are closely linked to health-related quality of life and understanding their inter-relationship could indicate potential intervention targets for improving quality of life. We set out to examine the relationship between frailty and life-space and their relative impact on quality of life measures. METHODS Using cross-sectional data from a population-representative cohort of people aged ≥ 70 years, we assessed quality of life with the EuroQol Health Index tool (5-levels) (EQ-5D-5L). We also undertook a life-space assessment and derived a frailty index. Linear regression models estimated EQ-5D-5L scores (dependent variable) using life-space assessment, frailty index and interactions between them. All models were adjusted by age, sex, lifestyle, and social care factors. RESULTS A higher EQ-5D Index was associated with higher life-space (0.02 per life-space assessment score, 95%CI: 0.01 to 0.03, p < 0.01) and decreasing frailty (-0.1 per SD, 95%CI: -0.1 to -0.1, p < 0.01). There was evidence of an interaction between life-space and frailty, where the steepest gradient for life-space and EQ-5D was in those with the highest frailty (interaction term = 0.02 per SD of frailty, 95%CI: 0.01 to 0.03, p < 0.01). CONCLUSION Individuals with the highest frailty were twice as likely to have higher quality of life in association with a larger life-space. Interventions designed to improve quality of life in frail older people could focus on increasing a person's life-space.
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Affiliation(s)
- Petronella Chitalu
- MRC Unit for Lifelong Health and Ageing at UCL, 1-19 Torrington Place, London, WC1E 7HB, UK.
| | - Alex Tsui
- MRC Unit for Lifelong Health and Ageing at UCL, 1-19 Torrington Place, London, WC1E 7HB, UK
| | - Samuel D Searle
- MRC Unit for Lifelong Health and Ageing at UCL, 1-19 Torrington Place, London, WC1E 7HB, UK.,Division of Geriatric Medicine, Dalhousie University, Nova Scotia, Canada
| | - Daniel Davis
- MRC Unit for Lifelong Health and Ageing at UCL, 1-19 Torrington Place, London, WC1E 7HB, UK
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Richardson S, Murray J, Davis D, Stephan BCM, Robinson L, Brayne C, Barnes L, Parker S, Sayer AA, Dodds RM, Allan L. Delirium and Delirium Severity Predict the Trajectory of the Hierarchical Assessment of Balance and Mobility in Hospitalized Older People: Findings From the DECIDE Study. J Gerontol A Biol Sci Med Sci 2022; 77:531-535. [PMID: 35239950 PMCID: PMC8893191 DOI: 10.1093/gerona/glab081] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Delirium is common, distressing, and associated with poor outcomes. Despite this, delirium remains poorly recognized, resulting in worse outcomes. There is an urgent need for methods to objectively assess for delirium. Physical function has been proposed as a potential surrogate marker, but few studies have monitored physical function in the context of delirium. We examined if trajectories of physical function are affected by the presence and severity of delirium in a representative sample of hospitalized participants older than 65 years. METHOD During hospital admissions in 2016, we assessed participants from the Delirium and Cognitive Impact in Dementia study daily for delirium and physical function, using the Hierarchical Assessment of Balance and Mobility (HABAM). We used linear mixed models to assess the effect of delirium and delirium severity during admission on HABAM trajectory. RESULTS Of 178 participants, 58 experienced delirium during admission. Median HABAM scores in those with delirium were significantly higher (indicating worse mobility) than those without delirium. Modeling HABAM trajectories, HABAM scores at first assessment were worse in those with delirium than those without, by 0.76 (95% CI: 0.49-1.04) points. Participants with severe delirium experienced a much greater perturbance in their physical function, with an even lower value at first assessment and slower subsequent improvement. CONCLUSIONS Physical function was worse in those with delirium compared to without. This supports the assertion that motor disturbances are a core feature of delirium and monitoring physical function, using a tool such as the HABAM, may have clinical utility as a surrogate marker for delirium and its resolution.
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Affiliation(s)
- Sarah Richardson
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, UK
| | - James Murray
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, UK
| | - Daniel Davis
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Blossom C M Stephan
- Institute of Mental Health, Division of Psychiatry and Applied Psychology, School of Medicine, Nottingham University, UK
| | - Louise Robinson
- Population Health Sciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Carol Brayne
- Cambridge Public Health, University of Cambridge, UK
| | - Linda Barnes
- Cambridge Public Health, University of Cambridge, UK
| | - Stuart Parker
- Population Health Sciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Avan A Sayer
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, UK
| | - Richard M Dodds
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne Hospitals NHS Foundation Trust, UK
| | - Louise Allan
- Centre for Research in Ageing and Cognitive Health, University of Exeter, UK
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Goodyer E, Mah JC, Rangan A, Chitalu P, Andrew MK, Searle SD, Davis D, Tsui A. The relative impact of socioeconomic position and frailty varies by population setting. Aging Med (Milton) 2022; 5:10-16. [PMID: 35291504 PMCID: PMC8917265 DOI: 10.1002/agm2.12200] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/01/2022] [Accepted: 02/06/2022] [Indexed: 11/23/2022] Open
Abstract
Introduction Frailty and socioeconomic position (SEP) are well-established determinants of health. However, we know less about the contributions of frailty and SEP in older adults, especially in acute settings. We set out to answer how frailty and SEP might influence health outcomes in older people, comparing a population sample and patients managed by a speciality acute frailty service. Methods We used the Delirium and Population Health Informatics Cohort, a population sample of 1510 individuals aged ≥70 years from the London Borough of Camden and 1750 acute frailty patients. SEP was determined using the Index of Multiple Deprivation. Linear and Cox proportional hazard regression models were conducted to assess SEP on frailty, readmission, and mortality outcomes. Results In the population sample, SEP was significantly associated with frailty and mortality with successive increases in rate of death for each IMD quintile (HR = 1.28, 95% CI 1.11 to 1.49, P < 0.005). Increasing SEP, age, and admission status among hospitalized individuals were associated with greater frailty. For individuals seen by the speciality frailty service, SEP was not associated with frailty, mortality, or readmission. Discussion When older people experience acute illness severe enough to require secondary care, particularly specialist services, this overcomes any prior advantages conferred by a higher SEP.
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Affiliation(s)
| | - Jasmine C. Mah
- Department of MedicineDalhousie UniversityHalifaxNova ScotiaCanada
| | - Apoorva Rangan
- MRC Unit for Lifelong Health and Ageing at UCLLondonUK
- School of MedicineStanford UniversityStanfordCAUSA
| | | | - Melissa K. Andrew
- Division of Geriatric MedicineDalhousie UniversityHalifaxNova ScotiaCanada
| | - Samuel D. Searle
- MRC Unit for Lifelong Health and Ageing at UCLLondonUK
- Division of Geriatric MedicineDalhousie UniversityHalifaxNova ScotiaCanada
| | - Daniel Davis
- MRC Unit for Lifelong Health and Ageing at UCLLondonUK
- Department of Medicine for the ElderlyUniversity College HospitalLondonUK
| | - Alex Tsui
- MRC Unit for Lifelong Health and Ageing at UCLLondonUK
- Department of Medicine for the ElderlyUniversity College HospitalLondonUK
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Cursano S, Battaglia CR, Urrutia-Ruiz C, Grabrucker S, Schön M, Bockmann J, Braumüller S, Radermacher P, Roselli F, Huber-Lang M, Boeckers TM. A CRHR1 antagonist prevents synaptic loss and memory deficits in a trauma-induced delirium-like syndrome. Mol Psychiatry 2021; 26:3778-3794. [PMID: 32051550 PMCID: PMC8550963 DOI: 10.1038/s41380-020-0659-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 01/10/2020] [Accepted: 01/20/2020] [Indexed: 12/15/2022]
Abstract
Older patients with severe physical trauma are at high risk of developing neuropsychiatric syndromes with global impairment of cognition, attention, and consciousness. We employed a thoracic trauma (TxT) mouse model and thoroughly analyzed age-dependent spatial and temporal posttraumatic alterations in the central nervous system. Up to 5 days after trauma, we observed a transient 50% decrease in the number of excitatory synapses specifically in hippocampal pyramidal neurons accompanied by alterations in attention and motor activity and disruption of contextual memory consolidation. In parallel, hippocampal corticotropin-releasing hormone (CRH) expression was highly upregulated, and brain-derived neurotrophic factor (BDNF) levels were significantly reduced. In vitro experiments revealed that CRH application induced neuronal autophagy with rapid lysosomal degradation of BDNF via the NF-κB pathway. The subsequent synaptic loss was rescued by BDNF as well as by specific NF-κB and CRH receptor 1 (CRHR1) antagonists. In vivo, the chronic application of a CRHR1 antagonist after TxT resulted in reversal of the observed histological, molecular, and behavioral alterations. The data suggest that neuropsychiatric syndromes (i.e., delirium) after peripheral trauma might be at least in part due to the activation of the hippocampal CRH/NF-κB/BDNF pathway, which results in a dramatic loss of synaptic contacts. The successful rescue by stress hormone receptor antagonists should encourage clinical trials focusing on trauma-induced delirium and/or other posttraumatic syndromes.
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Affiliation(s)
- Silvia Cursano
- grid.6582.90000 0004 1936 9748Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany ,International Graduate School in Molecular Medicine, IGradU, 89081 Ulm, Germany
| | - Chiara R. Battaglia
- grid.6582.90000 0004 1936 9748Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany ,International Graduate School in Molecular Medicine, IGradU, 89081 Ulm, Germany
| | - Carolina Urrutia-Ruiz
- grid.6582.90000 0004 1936 9748Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Stefanie Grabrucker
- grid.10049.3c0000 0004 1936 9692Department of Biological Sciences, University of Limerick, Limerick, V94 PH61 Ireland
| | - Michael Schön
- grid.6582.90000 0004 1936 9748Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Jürgen Bockmann
- grid.6582.90000 0004 1936 9748Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Sonja Braumüller
- grid.6582.90000 0004 1936 9748Institute for Anesthesiological Pathophysiology, Ulm University, Helmholtzstr. 8/1, 89081 Ulm, Germany
| | - Peter Radermacher
- grid.6582.90000 0004 1936 9748Institute for Anesthesiological Pathophysiology, Ulm University, Helmholtzstr. 8/1, 89081 Ulm, Germany
| | - Francesco Roselli
- grid.6582.90000 0004 1936 9748Clinic for Neurology, Ulm University, 89081 Ulm, Germany
| | - Markus Huber-Lang
- grid.6582.90000 0004 1936 9748Institute of Clinical and Experimental Trauma-Immunology, Ulm University, 89081 Ulm, Germany
| | - Tobias M. Boeckers
- grid.6582.90000 0004 1936 9748Institute for Anatomy and Cell Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
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Pulok MH, Theou O, van der Valk AM, Rockwood K. The role of illness acuity on the association between frailty and mortality in emergency department patients referred to internal medicine. Age Ageing 2020; 49:1071-1079. [PMID: 32392289 PMCID: PMC7583513 DOI: 10.1093/ageing/afaa089] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/12/2020] [Accepted: 04/06/2020] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND we investigated whether two frailty tools predicted mortality among emergency department (ED) patients referred to internal medicine and how the level of illness acuity influenced any association between frailty and mortality. METHODS two tools, embedded in a Comprehensive Geriatric Assessment (CGA), were the clinical frailty scale (CFS) and a 57-item deficit accumulation frailty index (FI-CGA). Illness acuity was assessed using the Canadian Triage and Acuity Scale (CTAS). We examined all-cause 30-day and 6-month mortality and time to death. RESULTS in 808 ED patients (mean age ± SD 80.8 ± 8.8, 54.4% female), the mean FI-CGA score was 0.44 ± 0.14, and the CFS was 5.6 ± 1.6. A minority (307; 38%) were classified as having high acuity (CTAS: 1-2). The 30-day mortality rate was 17%; this increased to 34% at 6 months. Compared to well patients with low acuity, the risk of 30-day mortality was 22.5 times (95% CI: 9.35-62.12) higher for severely frail patients with high acuity; 53% of people with very severe frailty (CFS = 8) and high acuity died within 30 days. When acuity was low, the risk for 30-day mortality was significantly higher only among those with very high levels of frailty (CFS 7-9, FI-CGA > 0.5). When acuity was high, even lower levels of frailty (CFS 5-6, FI-CGA 0.4-0.5) were associated with higher 30-day mortality. CONCLUSIONS across levels of frailty, higher acuity increased mortality risk. When acuity was low, the risk was significant only when the degree of frailty was high, whereas when acuity was high, even lower levels of frailty were associated with greater mortality risk.
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Affiliation(s)
| | - Olga Theou
- Geriatric Medicine Research, Nova Scotia Health Authority, Halifax, Nova Scotia, Canada
- School of Physiotherapy, Dalhousie University, Halifax, Nova Scotia, Canada
| | | | - Kenneth Rockwood
- Geriatric Medicine Research, Nova Scotia Health Authority, Halifax, Nova Scotia, Canada
- Divisions of Geriatric Medicine & Neurology, Dalhousie University & Nova Scotia Health Authority, Halifax, Nova Scotia, Canada
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Bauermeister S, Orton C, Thompson S, Barker RA, Bauermeister JR, Ben-Shlomo Y, Brayne C, Burn D, Campbell A, Calvin C, Chandran S, Chaturvedi N, Chêne G, Chessell IP, Corbett A, Davis DHJ, Denis M, Dufouil C, Elliott P, Fox N, Hill D, Hofer SM, Hu MT, Jindra C, Kee F, Kim CH, Kim C, Kivimaki M, Koychev I, Lawson RA, Linden GJ, Lyons RA, Mackay C, Matthews PM, McGuiness B, Middleton L, Moody C, Moore K, Na DL, O'Brien JT, Ourselin S, Paranjothy S, Park KS, Porteous DJ, Richards M, Ritchie CW, Rohrer JD, Rossor MN, Rowe JB, Scahill R, Schnier C, Schott JM, Seo SW, South M, Steptoe M, Tabrizi SJ, Tales A, Tillin T, Timpson NJ, Toga AW, Visser PJ, Wade-Martins R, Wilkinson T, Williams J, Wong A, Gallacher JEJ. The Dementias Platform UK (DPUK) Data Portal. Eur J Epidemiol 2020; 35:601-611. [PMID: 32328990 PMCID: PMC7320955 DOI: 10.1007/s10654-020-00633-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 04/10/2020] [Indexed: 11/18/2022]
Abstract
The Dementias Platform UK Data Portal is a data repository facilitating access to data for 3 370 929 individuals in 42 cohorts. The Data Portal is an end-to-end data management solution providing a secure, fully auditable, remote access environment for the analysis of cohort data. All projects utilising the data are by default collaborations with the cohort research teams generating the data. The Data Portal uses UK Secure eResearch Platform infrastructure to provide three core utilities: data discovery, access, and analysis. These are delivered using a 7 layered architecture comprising: data ingestion, data curation, platform interoperability, data discovery, access brokerage, data analysis and knowledge preservation. Automated, streamlined, and standardised procedures reduce the administrative burden for all stakeholders, particularly for requests involving multiple independent datasets, where a single request may be forwarded to multiple data controllers. Researchers are provided with their own secure 'lab' using VMware which is accessed using two factor authentication. Over the last 2 years, 160 project proposals involving 579 individual cohort data access requests were received. These were received from 268 applicants spanning 72 institutions (56 academic, 13 commercial, 3 government) in 16 countries with 84 requests involving multiple cohorts. Projects are varied including multi-modal, machine learning, and Mendelian randomisation analyses. Data access is usually free at point of use although a small number of cohorts require a data access fee.
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Affiliation(s)
| | | | - Simon Thompson
- Swansea University Medical School, Swansea University, Swansea, UK
| | - Roger A Barker
- Cambridge University Department of Clinical Neurosciences and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | | | - Yoav Ben-Shlomo
- Population Health Sciences, University of Bristol, Bristol, UK
| | - Carol Brayne
- Department of Public Health, University of Cambridge, Cambridge, UK
| | - David Burn
- Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Archie Campbell
- Department of Medical Genetics, University of Edinburgh, Edinburgh, UK
| | | | | | | | - Geneviève Chêne
- Bordeaux Population Health, Université Bordeaux, Bordeaux, France
| | | | - Anne Corbett
- College of Medicine and Health, University of Exeter, Exeter, UK
| | | | - Mike Denis
- Oxford Academic Health Science Network, University of Oxford, Oxford, UK
| | - Carole Dufouil
- Bordeaux Population Health, Université Bordeaux, Bordeaux, France
| | - Paul Elliott
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, London, UK
- Imperial College NIHR Biomedical Research Centre, Imperial College London, London, UK
- Health Data Research UK London at Imperial College London, London, UK
| | - Nick Fox
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | | | - Scott M Hofer
- Department of Psychology, University of Victoria, Victoria, Canada
| | - Michele T Hu
- Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
| | | | - Frank Kee
- Centre for Public Health, Queen's University Belfast, Belfast, UK
| | - Chi-Hun Kim
- Department of Psychiatry, University of Oxford, Oxford, UK
| | - Changsoo Kim
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Mika Kivimaki
- Institute of Epidemiology and Health, University College London, London, UK
| | - Ivan Koychev
- Department of Psychiatry, University of Oxford, Oxford, UK
| | - Rachael A Lawson
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Gerry J Linden
- Centre for Public Health, Queen's University Belfast, Belfast, UK
| | - Ronan A Lyons
- Swansea University Medical School, Swansea University, Swansea, UK
| | - Clare Mackay
- Department of Psychiatry, University of Oxford, Oxford, UK
| | - Paul M Matthews
- Division of Brain Sciences and UK Dementia Research Institute, Imperial College London, London, UK
| | | | - Lefkos Middleton
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, London, UK
| | | | - Katrina Moore
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Duk L Na
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - John T O'Brien
- Department of Psychiatry, University of Cambridge, Cambridge, UK
| | - Sebastien Ourselin
- School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | | | - Ki-Soo Park
- Institute of Health Science, Gyeongsang National University, Jinju-si, South Korea
| | - David J Porteous
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | | | - Craig W Ritchie
- Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
| | - Jonathan D Rohrer
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Martin N Rossor
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - James B Rowe
- Cambridge University Department of Clinical Neurosciences and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Rachael Scahill
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Christian Schnier
- Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK
| | - Jonathan M Schott
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Sang W Seo
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Matthew South
- Department of Psychiatry, University of Oxford, Oxford, UK
| | - Matthew Steptoe
- Department of Behavioural Science and Health, UCL, London, UK
| | - Sarah J Tabrizi
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Andrea Tales
- Centre for Innovative Ageing, Swansea University, Swansea, UK
| | | | | | | | - Pieter-Jelle Visser
- VU University Medical Centre, Maastricht University, Maastricht, The Netherlands
| | - Richard Wade-Martins
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Tim Wilkinson
- Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK
| | - Julie Williams
- Institute of Psychological Medicine and Clinical Neurosciences, and UK Dementia Research Institute, Cardiff University, Cardiff, UK
| | - Andrew Wong
- MRC Unit for Lifelong Health and Ageing, UCL, London, UK
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9
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Whitby J, Bampoe S, Fullerton JN, Smaje A, Hornby J, Hajdu B, Schofield N, Stafford R, Zetterberg H, McAuley DF, Passmore P, Cunningham E, Whittle J, Walker D, Davis D. Prospective Investigation of Markers of Elevated Delirium Risk (PRIMED Risk) study protocol: a prospective, observational cohort study investigating blood and cerebrospinal fluid biomarkers for delirium and cognitive dysfunction in older patients. Wellcome Open Res 2020. [DOI: 10.12688/wellcomeopenres.15658.1] [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] Open
Abstract
Background: Delirium is a common post-operative complication, particularly in older adults undergoing major or emergency procedures. It is associated with increased length of intensive care and hospital stay, post-operative mortality and subsequent dementia risk. Current methods of predicting delirium incidence, duration and severity have limitations. Investigation of blood and cerebrospinal fluid (CSF) biomarkers linked to delirium may improve understanding of the underlying pathophysiology, particularly with regard to the extent this is shared or distinct with underlying dementia. Together, these have the potential for development of better risk stratification tools and perioperative interventions. Methods: 200 patients over the age of 70 scheduled for surgery with routine spinal anaesthetic will be recruited from UK hospitals. Their cognitive and functional baseline status will be assessed pre-operatively by telephone. Time-matched CSF and blood samples will be taken at the time of surgery and analysed for known biomarkers of neurodegeneration and neuroinflammation. Patients will be assessed daily for delirium until hospital discharge and will have regular cognitive follow-up for two years. Primary outcomes will be change in modified Telephone Interview for Cognitive Status (TICS-m) score at 12 months and rate of change of TICS-m score. Delirium severity, duration and biomarker levels will be treated as exposures in a random effects linear regression models. PRIMED Risk has received regulatory approvals from Health Research Authority and London – South East Research Ethics Committee. Discussion: The main anticipated output from this study will be the quantification of biomarkers of acute and chronic contributors to cognitive impairment after surgery. In addition, we aim to develop better risk prediction models for adverse cognitive outcomes.
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Development and feasibility of a smartphone-based test for the objective detection and monitoring of attention impairments in delirium in the ICU. J Crit Care 2018; 48:104-111. [PMID: 30176525 DOI: 10.1016/j.jcrc.2018.08.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/17/2018] [Accepted: 08/17/2018] [Indexed: 01/10/2023]
Abstract
PURPOSE Delirium in the ICU is under-diagnosed. We evaluated feasibility and performance of a novel smartphone-based test for objectively detecting inattention in delirium. MATERIAL AND METHODS DelApp-ICU combines a behavioural assessment and an attention task, whereby participants follow simple commands and count serially presented circles (score range 0-12, lower scores indicating worse performance). We assessed feasibility through staff interviews. Then we performed a preliminary case-control study in patients with and without delirium (ascertained with the Confusion Assessment Method for the ICU) who underwent the DelApp-ICU on up to 4 days. RESULTS Forty-six patients (median age = 57.5 years, range 18-83) were assessed 89 times in total (N's = 46, 29, 10 and 4 for subsequent assessments; 33.7% delirious). DelApp-ICU scores were lower in delirium (N = 20; median = 0.5, Inter-Quartile Range (IQR) = 0-4.75) compared to no delirium (N = 26, median = 12, IQR = 8-12) on days 1, 2 and 3 (p < 0.001, p < 0.001 and p < 0.05, respectively). A DelApp-ICU score ≤6 was 100% sensitive and 96% specific to delirium on day 1. Positive and Negative Predictive Values were 91% and 100%, respectively. DelApp-ICU scores were responsive to changes in CAM-ICU status. CONCLUSIONS DelApp-ICU shows promise for assessing inattention and delirium in ICU patients, including longitudinally monitoring deficits and providing a metric of delirium severity.
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