Abstract
Background
delirium is an acute severe neuropsychiatric condition associated with adverse outcomes, particularly in older adults. However, it is frequently under-recognised.
Methods
this multi-centre quality improvement project utilised a collaborative approach to implementation of changes at sites, with the aim to improve delirium screening, recognition and documentation on discharge summaries. Resources, including delirium guidelines and presentations, were shared between sites, and broad details of local interventions were collected. Three timepoints of data collection (14 March 2018, 14 September 2018 and 13 March 2019) were conducted to assess screening, recognition and documentation of delirium in unscheduled admissions of adults aged ≥65 years old. The impact of local interventions and site-specific factors was assessed using logistic regression analysis, adjusting for patient factors.
Results
a total of 3,013 patients (mean age 80.2, 53.8% females) were recruited across the three timepoints. Screening for delirium was associated with increased odds of recognition (aOR 4.75, CI 2.98–7.56; P < 0.001); this was not affected by grade/profession of screener. Rates of screening, recognition and discharge documentation improved across the three timepoints of data collection. The presence of a local delirium specialist team was associated with increased rates of screening for delirium (aOR 1.75, CI 1.41–2.18; P < 0.001), and the presence of a geriatric medicine team embedded into the admissions unit was associated with increased recognition rates (aOR 1.78, CI 1.09–2.92; P = 0.022).
Conclusion
delirium screening is associated with improved recognition. Interventions that strive to improve screening within a culture of delirium awareness are encouraged.
Keywords: delirium, quality improvement, collaborative, education, older people
Key Points
A multi-centre ‘crowdsourcing’ approach to quality improvement is feasible.
Delirium screening, recognition and discharge documentation improved across each round of data collection.
Screening for delirium increases the odds of recognition, and drives to improve screening are recommended.
Background
Delirium is an acute neuropsychiatric state defined by cognitive change and altered consciousness that occurs secondary to physical precipitants, particularly in older adults during hospitalisation [1]. Delirium is associated with adverse outcomes, but is frequently under-recognised [2]. Our previous research demonstrated that delirium screening increases recognition [1]. However, delirium screening was inconsistent. Screening and recognition were particularly reduced in surgical specialties [1]. Although delirium is reversible, it is associated with increased risk of later life dementia diagnosis [3]. Follow-up of patients who have experienced delirium is, therefore, vital. Unfortunately, delirium documentation on discharge summaries is infrequently performed [4]. In the UK, National Institute for Health and Care Excellence guidelines recommend that all adults aged ≥65 years old are screened for delirium on admission to hospital [5], and that delirium diagnoses are communicated to General Practitioners (GPs) on hospital discharge [6].
Aims
To improve screening and recognition of delirium in older adults admitted to acute care hospitals as unscheduled admissions.
To improve documentation of delirium diagnoses on discharge summaries.
Methods
This study presents results of a multi-centre quality improvement project, utilising a collaborative approach. Resources and knowledge were shared between sites, and sites were able to implement interventions locally according to service needs. Three timepoints of data collection were utilised (14 March 2018, 14 September 2018 and 13 March 2019). All timepoints of data collection included newly admitted (unscheduled) patients aged ≥65 years old to acute care trusts (all specialties, excluding critical care). We assessed for statistical significance of differences in likelihood of screening, recognition and discharge documentation across timepoints using multivariable logistic regression analysis. Full methodology is Supplementary data (Figure S1, Figure S2) are available in Age and Ageing online.
Results
Timepoint 1 included 1,507 patients from 44 sites, Timepoint 2 included 656 patients from 26 sites and Timepoint 3 included 850 patients from 48 sites. Eighty-two sites contributed data to at least one timepoint (Table S1, Supplementary data are available in Age and Ageing online). Overall prevalence of delirium across all timepoints was 16.3% (491/2,522). Characteristics of patients at each timepoint are shown in Table 1. Interventions implemented at sites between timepoints are shown in Table S2, Supplementary data (Figure S1, Figure S2) are available in Age and Ageing online.
Table 1.
Characteristics of study population across all timepoints
| Timepoint 1 | Timepoint 2 | Timepoint 3 | |||||
|---|---|---|---|---|---|---|---|
| Delirium (N = 222) | No delirium (N = 1,285) | Delirium (N = 133) | No delirium (N = 523) | Delirium (N = 136) | No delirium (N = 714) | ||
| Age—mean (SD) | 84.0 (7.4) | 79.3 (8.3) | 82.8 (8.1) | 79.6 (8.2) | 83.3 (7.9) | 80.0 (8.5) | |
| Gender—% females (N) | 60.8 (135) | 51.6 (663) | 50.4 (67) | 55.3 (289) | 60.3 (82) | 53.8 (384) | |
| Dementia—% (N) | 35.1 (78) | 12.9 (166) | 41.4 (55) | 14.0 (73) | 54.4 (74) | 16.2 (116) | |
| Clinical Frailty Scale | 1 | 0.5 (1) | 4.3 (55) | 1.5 (2) | 4.1 (21) | 0 | 5.4 (39) |
| 2 | 2.7 (6) | 11.3 (145) | 1.5 (2) | 10.9 (57) | 2.2 (3) | 9.7 (69) | |
| 3 | 3.6 (8) | 19.7 (253) | 6.8 (9) | 21.0 (110) | 2.2 (3) | 17.8 (127) | |
| 4 | 10.8 (24) | 18.1 (232) | 15.0 (20) | 19.5 (102) | 8.1 (11) | 16.0 (114) | |
| 5 | 21.2 (47) | 15.9 (204) | 10.5 (14) | 15.1 (79) | 19.1 (26) | 17.9 (128) | |
| 6 | 28.4 (63) | 17.6 (226) | 30.8 (41) | 15.9 (83) | 29.4 (40) | 17.4 (124) | |
| 7 | 25.7 (57) | 9.3 (119) | 26.3 (35) | 10.5 (55) | 32.4 (44) | 9.7 (69) | |
| 8 | 4.5 (10) | 0.9 (12) | 6.0 (8) | 1.5 (8) | 5.1 (7) | 1.3 (9) | |
| 9 | 0 (0) | 0.2 (3) | 1.5 (2) | 1.3 (7) | 0 (0) | 0.6 (4) | |
| Specialty | Acute medicine | 47.7 (106) | 42.2 (542) | 21.8 (29) | 21.2 (111) | 27.2 (37) | 18.5 (132) |
| Geriatric medicine | 26.6 (59) | 16.0 (206) | 45.1 (60) | 20.3 (106) | 37.5 (51) | 18.8 (134) | |
| Stroke | 1.8 (4) | 4.0 (52) | 0.8 (1) | 5.0 (26) | 1.5 (2) | 3.9 (28) | |
| Other medicine | 14.0 (31) | 22.1 (284) | 21.1 (28) | 27.9 (146) | 19.1 (26) | 35.9 (256) | |
| Orthopaedic surgery | 6.8 (15) | 6.2 (80) | 6.0 (8) | 9.0 (47) | 8.1 (11) | 9.0 (64) | |
| General surgery | 3.2 (7) | 6.5 (83) | 4.5 (6) | 8.0 (42) | 4.4 (6) | 9.1 (65) | |
| Other surgery | 1.8 (4) | 3.0 (38) | 0.8 (1) | 8.6 (45) | 2.2 (3) | 4.3 (31) | |
Delirium screening
Delirium screening increased across timepoints (27.3% versus 29.6% versus 37.1%; P < 0.001). Odds of screening increased between Timepoints 1 and 3 (aOR 1.33, CI 1.08–1.65; P = 0.001; Table 2). Delirium screening was associated with increasing age, mild–moderate (but not severe) frailty and dementia. Odds of delirium screening were increased with presence of specialist delirium teams (aOR 1.75, CI 1.41–2.18; P < 0.001; Table S3, Supplementary data are available in Age and Ageing online).
Table 2.
Logistic regression analysis for odds of screening, recognition and discharge documentation between timepoints
| Timepoint 2 versus Timepoint 1 | Timepoint 3 versus Timepoint 1 | |||
|---|---|---|---|---|
| OR (CI) | P value | OR (CI) | P value | |
| Delirium screening | ||||
| Unadjusted | 1.18 (0.95–1.46) | 0.142 | 1.45 (1.18–1.78) | <0.001 |
| Adjusted¥ | 1.07 (0.85–1.34) | 0.570 | 1.33 (1.08–1.65) | 0.001 |
| Delirium recognition | ||||
| Unadjusted | 2.60 (1.62–4.16) | <0.001 | 2.31 (1.41–3.77) | 0.001 |
| Adjustedǂ | 1.93 (1.11–3.35) | 0.019 | 2.33 (1.31–4.15) | 0.004 |
| Discharge documentation | ||||
| Unadjusted | 2.34 (1.23–4.46) | 0.009 | 1.78 (1.02–3.11) | 0.042 |
| Adjusted¥ | 2.27 (1.10–4.68) | 0.026 | 1.73 (0.93–3.24) | 0.085 |
¥Adjusted for Clinical Frailty Scale, age, gender, dementia status, specialty and site-specific factors.
ǂAdjusted for screening, subtype, Clinical Frailty Scale, age, gender, dementia status, specialty and site-specific factors.
Delirium recognition
Delirium recognition increased across timepoints (34.2% versus 57.1% versus 63.2%; P < 0.001). Odds of recognition increased between Timepoints 1 and 2 (aOR 1.93, CI 1.11–3.35; P = 0.019), and 1 and 3 (aOR 2.33, CI 1.31–4.15; P = 0.004; Table 2). Screening for delirium was associated with delirium recognition (aOR 4.75, CI 2.98–7.56; P < 0.001); this was not affected by grade/profession of screener. Recognition odds were increased in patients with dementia (aOR 1.73, CI 1.06–2.84; P = 0.029), and presence of geriatric teams embedded into admissions units (aOR 1.78, CI 1.09–2.92; P = 0.022). Admissions under general (aOR 0.11, CI 0.02–0.58; P = 0.009) or orthopaedic (aOR 0.27, CI 0.09–0.79; P = 0.017) surgery were associated with reduced delirium recognition (Table S4, Supplementary data are available in Age and Ageing online).
Discharge documentation
Discharge documentation increased across timepoints (28.6% versus 48.4% versus 46.6%; P = 0.002) (Table 2). Odds of discharge documentation increased from Timepoint 1 to 2 (aOR 2.34, CI 1.23–4.46; P = 0.009). Odds of delirium documentation were increased in patients with dementia (aOR 2.01, CI 1.16–3.48; P = 0.012), but not affected by site-specific factors (Table S5, Supplementary data are available in Age and Ageing online).
Discussion
Delirium screening, recognition and discharge documentation all improved overall, demonstrating that rates of these are not fixed/inalterable. Importantly, screening is associated with increased odds of recognition; efforts to increase screening should be encouraged. Notably, grade and profession of screener did not affect recognition. Therefore, interventions to improve recognition may utilise trained multiprofessional screeners and junior staff. The 4AT has been validated for use by all healthcare professionals with minimal training [7, 8].
Discharge documentation was more likely in patients with pre-existing dementia. Reasons for this are unclear, but may relate to greater awareness of importance of delirium in dementia, in a similar manner to increased recognition rates. There may be a general misunderstanding as to why communication of delirium diagnoses to GPs is important, in terms of highlighting risk of future cognitive decline [3, 9]. Encouragingly, documentation improved across timepoints. Previous studies have shown that discharge documentation is often inadequate across many settings [10].
External validity
Overall delirium prevalence was 16.3%. This is lower than a previous single-site point prevalence study (19.6%) [11]. Differences are accounted for by inclusion of incident delirium in the latter study; only prevalent cases at admission were included at Timepoints 1 and 3. A higher prevalence rate (22.9%) was reported in a study considering positive screen with 4AT alone and not reference-standard delirium diagnosis [12]. Previous single centre quality improvement projects have demonstrated similar improvements in delirium screening and recognition with local interventions. A previous study involving implementation of a local delirium pathway and multidisciplinary teaching programme demonstrated improvement in delirium recognition rates from 5.7 to 35% over 11 weeks [13]. Similarly, implementation of dedicated teaching sessions within an acute medical unit, and management bundle with checklists, resulted in improved delirium screening rates from 40 to 61% [14].
Internal validity
Patient characteristics were similar across timepoints with regards to age, gender and specialties. Most patients were within acute and geriatric medicine specialties, which is consistent with recognised pathways of care within the UK [15]. However, at later timepoints higher dementia rates were recorded. Our results demonstrated that delirium was more likely to be recognised in patients with dementia. However, effects persisted in multivariable models adjusting for dementia.
We recognise that a significant limitation is that not all the same sites participated at each timepoint. Analyses and interpretation were performed for sites overall rather than at site level; site level analysis was not possible due to individually small numbers. Nevertheless, improvement in screening, recognition and documentation across timepoints demonstrates that such improvements are possible. We acknowledge that methodology differed between timepoints; data was collected prospectively at Timepoints 1 and 3 but retrospectively at Timepoint 2. We consider this variation unlikely to have significantly impacted upon results. Validated methodology for retrospective delirium ascertainment was used at Timepoint 2 [16, 17]. In addition, although this may have led to differences in recognition rates, this should not have affected screening rates. Documentation of screening was extracted from clinical records across all timepoints.
We cannot be certain specific interventions led to improvements, or if these relate to external factors. It is conceivable that improvements across timepoints related to improved culture of embedding delirium screening and assessment into clinical practice. This may have occurred due to leadership of collaborators at sites. However, many doctors rotated sites during this project, and collaborators at sites differed between timepoints. This suggests that changes can be sustained, even where leadership is rotated. Improved delirium screening and recognition rates may also be related to external factors. The International Federation of Delirium Studies (iDelirium) is an international collaboration of societies, which seeks to educate patients, caregivers, professionals and policy makers about delirium [18]. The society constantly aims to increase awareness of delirium, however, national campaigns peek around the time of WDAD (i.e. first and last timepoints) [18].
Recommendations
Our approach of sharing guidelines, resources and a central data collection point is feasible in involving multiple centres across multiple timepoints. Methodology was sufficiently simple to enable healthcare professionals of any grade or profession to be involved with screening and data collection. This is a model that may be replicated in future collaborative quality improvement projects.
Despite the focus on screening and recognition, it is important to recognise that assessment is only part of management. If delirium is present and recognised this should prompt healthcare professionals to take action by identifying and treating underlying causes [19]. Education should focus on rationale behind actions, such as the need to ensure delirium is communicated to primary care to enable appropriate follow-up of cognitive trajectories. Delirium may take some time to fully resolve [20], and communication to primary care is of utmost importance.
Although it was not possible to analyse site level data for effectiveness of individual interventions at site, we were able to identify site factors that were predictive of screening and recognition. Specialist delirium teams were associated with improved screening rates, and geriatric medicine teams embedded into admissions units were associated with improved recognition rates. Where sites are seeking to improve screening and recognition rates locally, we suggest that these findings are considered in service development. There was a very strong association (nearly fivefold) between delirium screening and likelihood of delirium recognition. Thus, drivers towards increased delirium screening are likely to prove beneficial.
Conclusions
A collaborative approach to multi-centre quality improvement is feasible; including multiple data collection timepoints, and sharing of guidelines/resources and knowledge across sites. Importantly, screening, recognition and delirium documentation rates are not fixed/unalterable; improved rates across timepoints suggest potential for responsiveness to interventions. Screening for delirium is associated with increased likelihood of delirium recognition. We encourage implementation of interventions to improve recognition through way of increased screening, alongside sustainable culture changes.
Supplementary Material
Declaration of Conflicts of Interest
None.
Declaration of Sources of Funding
The research was sponsored by the University of Birmingham. This study received support for project delivery and coordination from the Birmingham Surgical Trials Consortium via core funding from the National Institute for Health Research (NIHR) Clinical Research Network West Midlands allocated to help support new research collaboratives. The sponsor was not involved in design, methods, subject recruitment, data collections, analysis or preparation of the manuscript. The views expressed in this manuscript are those of the authors are not the NIHR, National Health Service or Department of Health.
Acknowledgements
Collaborators to be cited within the Geriatric Medicine Research Collaborative:
Members of the Geriatric Medicine Research Collaborative
| Manuscript preparation | |||
| First name | Middle initial | Last name | Affiliation |
| Julian | Lin | Torbay and South Devon NHS Foundation Trust | |
| Sindhoora | Dama | South Warwickshire Foundation Trust | |
| Carly | Welch | University of Birmingham | |
| Steering group | |||
| Thomas | A. | Jackson | University of Birmingham |
| Laura | Magill | ||
| Lauren | McCluskey | ||
| Rita | Perry | ||
| Daisy | Wilson | ||
| Advisory group | |||
| Claire | Copeland | NHS Forth Valley | |
| Emma | Cunningham | Queen’s University Belfast | |
| Daniel | Davis | University College London | |
| Jonathan | Treml | University Hospitals Birmingham NHS Foundation Trust | |
| Thomas | Pinkney | University of Birmingham | |
| Terrence | Quinn | University of Glasgow | |
| Data analysis advisor | |||
| Peter | Nightingale | University Hospitals Birmingham NHS Foundation Trust | |
| Regional leads | |||
| Benjamin | Jelley | Cardiff and Vale University Health Board | |
| Victoria | Gaunt | Gloucestershire Hospitals NHS Foundation Trust | |
| Mary | Ni Lochlainn | King’s College London | |
| Kumudhini | Giridharan | Maidstone & Tunbridge Wells NHS Trust | |
| Sarah | Richardson | Newcastle University | |
| Mustafa | Alsahab | Oxford University Hospitals NHS Foundation Trust | |
| Stephen | Makin | University of Aberdeen | |
| Kelli | Torsney | University of Cambridge | |
| Jane | Masoli | University of Exeter | |
| Lindsay | Ronan | University of Exeter | |
| Jenni | K. | Burton | University of Glasgow |
| Oliver | Todd | University of Leeds | |
| Joanne | Taylor | University of Manchester | |
| Ruth | Willott | University of Nottingham | |
| Natalie | Cox | University of Southampton | |
| Roisin | Healy | Western Health and Social Care Trust | |
| Other collaborators | |||
| Nedaa | Haddad | Anuerin Bevan University Health Board | |
| Sharan | Ramakrishna | ||
| Zahid | Subhan | ||
| Antonella | Mazzoleni | Barnet, Enfield and Haringey Mental Health Liaison Service | |
| Olga | Nynaes | ||
| Jodie | Crofts | Barnsley District General Hospital | |
| Emily | McNicholas | ||
| Hannah | J. | Robinson | |
| Thyn | Thyn | ||
| Jonathan | Baillie | Belfast Health and Social Care Trust | |
| William | McKeown | ||
| Caroline | Rice | ||
| Gerrard | W. | Sloan | |
| Katherine | Williamson | ||
| Yasmeen | Hayat | Bolton NHS Foundation Trust | |
| Vee Han | Lim | ||
| Katie | Millichamp | ||
| Amr | Bazaraa | Bradford Teaching Hospitals NHS Foundation Trust | |
| Angharad | Chilton | ||
| Alexander | Harbinson | ||
| John | Headlam | ||
| Elisabeth | Hunter | ||
| Zainab | Hussain | ||
| Al Wakkass | Mahmood | ||
| Liji | Ng | ||
| Srividya | Sundara | ||
| Felicia | Tan | ||
| Alice | Wheeler | ||
| Sophie | Wright | ||
| Jack | B.G. | Baldwin | Brighton and Sussex University Hospitals NHS Trust |
| Kate | O'shea | ||
| Ghazal | Hodhody | Buckinghamshire Healthcare NHS Trust | |
| Kara | Mayor | ||
| Riana | Patel | ||
| Shiv | Bhakta | Cambridge University Hospitals | |
| Marie | Goujon | ||
| Adriana | Jakupaj | ||
| James | Dove | Camden & Islington NHS Foundation Trust | |
| Matthew | Kearney | County Durham and Darlington NHS Foundation Trust | |
| Vincent | McCormack | ||
| Kirsty | Moore | ||
| Leo | Pope | ||
| Hussun-Ara | Shah | ||
| Megan | E. | Shaw | |
| Gemma | M. | Smith | |
| Ryan | Love | East and North Hertfordshire NHS Trust | |
| Maya | Mukundan | ||
| Muhammad | Shahid | ||
| Ahmad | Alareed | ||
| Clementine | Anderson | ||
| Karen | Beharry | ||
| Ganapathy | Bhat | ||
| Sanojan | Bremakumar | ||
| Laurence | Caines | ||
| Sandra | Darko | ||
| Nisha | Rai | ||
| David | Saliu | ||
| Pedro | Vila De Mucha | ||
| Phillipa | Adams | Gateshead Health NHS Foundation Trust | |
| Helen | McDonald | Gloucestershire Hospitals NHS Foundation Trust | |
| Sam | Mills | ||
| Frances | Parry | ||
| Frances | Rickard | ||
| Stuart | Winearls | ||
| Rinata | Farah | Great Western Hospitals NHS Trust | |
| Robert | Grange | ||
| Fiona | Herbert | ||
| Elizabeth | Lonsdale-Eccles | ||
| Qurrat | Ul Ain | ||
| Hannah | Watson | ||
| Celine | Bultynck | Guy’s & St Thomas’ NHS Foundation Trust | |
| Chiara | Cavaliere | ||
| Cal | Doherty | ||
| Sarah | Evans | ||
| Daniel | Furmedge | ||
| Annabel | Hentall MacCuish | ||
| Esther | Hindley | ||
| Caitlin | Meyer | ||
| Emma | Mullarkey | ||
| Rosamund | Pullen | ||
| Aidan | Ryan | ||
| Dhruv | Sarma | ||
| Elaine | Seymour | ||
| Katharine | Stambollouian | ||
| Darmiga | Thayabaran | ||
| Chenxian | Wu | ||
| George | Peck | Imperial College London Healthcare Trust | |
| Mahrukh | Raza | ||
| Kapil | Sahnan | ||
| Amber | Dhillon | Keele University | |
| Oluwatosin | O. | Abiola | King's College Hospital NHS Foundation Trust |
| Catherine | Bryant | ||
| Rachael | Bygate | ||
| John | Frewen | ||
| Isabel | Greaves | ||
| Olivia | Morrow | ||
| Simon | Tetlow | ||
| Guy | Tinson | ||
| Aayenah | Yunus | ||
| Simran | Bedi | King's College London | |
| Olivia | Evans | Lewisham & Greenwich NHS Trust | |
| Leeying | Giet | ||
| Taran | Nandra | ||
| Abolfazl | Behbahani | Liverpool University | |
| Saurav | Bhattacharya | Maidstone and Tunbridge Wells NHS Trust | |
| Clare | Hunt | ||
| Rajeev | Mishra | ||
| Louise | Connor | Newcastle University | |
| Jack | Poynton | ||
| Elizabeth | Deacon | Newcastle Upon Tyne Hospitals NHS Foundation Trust | |
| Rory | Durcan | ||
| Emma | Fisken | ||
| Susan | A. | Hall | |
| Jane | Noble | ||
| Emma | L. | Prendergast | |
| Ajay | Macharouthu | NHS Ayrshire and Arran | |
| Victoria | Macrae | ||
| Emily | Murphy-Ackroyd | ||
| Emily | C. | Rose | |
| Nicola | Watt | ||
| Mairi | Blair | NHS Forth Valley | |
| Eilidh | R. | Mackenzie | |
| Roisin | McCormack | ||
| Sophie | J. | Irwin | NHS Gateshead |
| Alice | Einarsson | NHS Grampian | |
| Ming | Khor | ||
| Baraa | Alhadadi | NHS Greater Glasgow and Clyde | |
| Ewen | Cameron | ||
| Angela | Campbell | ||
| Eileen | Capek | ||
| Lorna | Christie | ||
| Laura | Connell | ||
| Alan | Cook | ||
| Jordanna | Deosaran | ||
| Marianne | Elliott | ||
| Elizabeth | Evans | ||
| Sarah | Fancourt | ||
| Sarah | Henderson | ||
| Ambreen | Hussain | ||
| Karen | Jones | ||
| Dominic | Kelly | ||
| Catherine | Mary | McErlean | |
| Hazel | Miller | ||
| Fariha | Naeem | ||
| Caroline | Ostrowski | ||
| Megan | Parkinson | ||
| Fadi | Sami | ||
| Alison | Shepherd | ||
| Lindsay | Whyte | ||
| Emily | Wright | ||
| Eilidh | E.C. | Ferguson | NHS Lanarkshire |
| Michael | Gallagher | ||
| Heather | J. | McCluskey | |
| Louise | Beveridge | NHS Tayside | |
| Hollie | A. | Clements | |
| Jasmine | Hart | ||
| Neil | Henderson | ||
| Su Kwan | Lim | ||
| James | E. | Lucocq | |
| Alison | McCulloch | ||
| Adam | A. | Murray | |
| Esther | E.Y. | Ngan | |
| Philippa | K. | Traill | |
| Amy | Walter | ||
| Michael | S.J. | Wilson | |
| Abigail | Wrathall | ||
| Zhi Jiun | Yap | ||
| Hashem | Abu-Arafeh | North Middlesex University Hospital NHS Trust | |
| Ilan | Gluck | ||
| Oliver | Mitchell | ||
| Richard | Robson | ||
| Elizabeth | L. | Sampson | |
| Arunkumar | Annamalai | North Tees and Hartlepool NHS Foundation Trust | |
| Jamal | Bhatti | ||
| Laura | Briggs | ||
| Debbie | Fraser | ||
| Jonathan | Gui | ||
| Eleanor | Leah | ||
| Natasha | Matthews | ||
| Pryankaran | Mithrakumar | ||
| Mohammad | Moad | ||
| Michael | Sen | ||
| Jacqui | Straughan | ||
| Roxana | Taranu | ||
| Kasim | Usmani | ||
| Ayesha | Aamir | North West Anglia NHS Foundation Trust | |
| Amaka | Achara | ||
| Olugbenro | Akintade | ||
| Elizabeth | J. | Ellis | |
| Sneha | Gurung | ||
| Chioma | Iwu | ||
| Abdullah | B. | Khalid | |
| Sejlo | Koshedo | ||
| Shonit | Nagumantry | ||
| Nader | Nashed | ||
| Philip | Nwabufor | ||
| Ijeoma | T. | Obi | |
| Parrthiepan | Visvaratnam | ||
| Edward | Wu | ||
| Marc | Bertagne | Northern Devon Healthcare NHS Trust | |
| Peter | Jackson | ||
| James | Allen | Oxford University Hospitals NHS Foundation Trust | |
| Harriet | Brown | ||
| Jennifer | Champion | ||
| Natasha | Christodoulides | ||
| Olivia | Handley | Poole Hospital NHS Foundation Trust | |
| Fiona | E. | Macdonald | |
| Laura | J. | Beeley | Royal Cornwall Hospitals NHS Trust |
| Victoria | Clayton | ||
| Aaron | Kay | ||
| John | Marshall | ||
| Hannah | Morgan | ||
| George | Naish | ||
| Sarah | L. | Cleaver | Royal Devon & Exeter Hospital NHS Foundation Trust |
| Jenny | Evans | ||
| Abbie | Morrow | ||
| Raj | Amarnani | Royal Free London NHS Foundation Trust | |
| Khai | L. | Cheah | |
| Claire | Cushen | ||
| Amy | Enfield-Bance | ||
| Martin | Glasser | ||
| Suriti | Govindji | ||
| Shama | Mani | ||
| Jemma | Gregory | Sandwell and West Birmingham NHS Trust | |
| Puja | Jatti | ||
| Asma | Khan | ||
| Helena | Lee | ||
| Helen | Millner | ||
| Huma | Naqvi | ||
| Emily | Williamson | ||
| Teresa | Harkin | Sherwood Forest Hospitals NHS Foundation Trust | |
| Bushra | Khizar | ||
| Anna | Lewis | ||
| Hannah | Pendleton | ||
| Steve | Rutter | ||
| Rohan | Ahmed | Shrewsbury and Telford Hospital Trust | |
| Farah | Coffey | ||
| Waleed | Faheem | ||
| Beth | Hackett | ||
| Elizabeth | A.M. | Holmes | |
| Ali | Khan | ||
| Zeeshan | Mustafa | ||
| Mark | A. | Bowman | South Eastern Health and Social Care Trust |
| James | Irvine | ||
| Katherine | Patterson | ||
| Sarah | Horner | South Tees Hospitals NHS Foundation Trust | |
| Ting | W. | Wong | |
| Christopher | Cairns | South Tyneside and Sunderland NHS Foundation Trust | |
| Kate | Foster | ||
| Alex | Hornsby | ||
| Robbie | Horton | ||
| Laura | Jones | ||
| Rachel | King | ||
| Emily | Lyon | ||
| Ani | Tencheva | ||
| Faye | Wilson | ||
| Lesley | J. | Young | |
| Eleanor | Giblin | South Warwickshire Foundation Trust | |
| Lleika | Kunaselan | ||
| Olivia | Lowes | ||
| Reema | Menezes | ||
| Abigail | Taylor | ||
| Alex | Timperley | ||
| Rachel | Batho | ||
| Charlotte | Bell | ||
| Sammy | Carter | ||
| Paul | Croft | ||
| Eliza | Griffiths | ||
| Giles | Hall | ||
| William | Hunt | ||
| Holly | Jacques | ||
| Felicity | Leishman | ||
| Seema | Murthy | ||
| Sinead | Quinn | ||
| James | Reid | ||
| Amy | Walker | ||
| Stephanie | A. | Matthews | Southend University Hospital Trust |
| Ayoub | Behbahani | Southport and Ormskirk Hospital NHS Trust | |
| Martin | Glasser | St George's University Hospital NHS Trust | |
| Ana | Silva Ferreira | Surrey and Sussex Healthcare NHS Trust | |
| Caroline | Ashton | The Princess Alexandra Hospital NHS Trust | |
| Swetha | Byravan | The Royal Wolverhampton NHS Trust | |
| Laura | Cummings | ||
| Sana | Faruq | ||
| Sarah | Jagdeo | ||
| Philip | Thomas | ||
| Karen | Broadhurst | Torbay and South Devon NHS Foundation Trust | |
| Joseph | B. | Wilson | |
| Helen | Bowden | University College London | |
| Katrin | Hoffman | ||
| Howell | T. | Jones | |
| Charles | Katz-Summercorn | ||
| Ethan | Khambay | ||
| Lucy | Porter | ||
| James | Speed | ||
| Keziah | Austin | University College London Hospitals NHS Foundation Trust | |
| Farrah | Bahsoon | ||
| Rose | Laud | ||
| Jawad | Ali | University Hospitals Birmingham NHS Trust (Birmingham Heartlands Hospital) | |
| Niall | Fergusson | ||
| Claire | Wilkes | ||
| Laura | Babb | University Hospitals Birmingham NHS Trust (Good Hope Hospital) University Hospitals Birmingham NHS Trust (Good Hope Hospital) | |
| James | Gaywood | ||
| Jessica | Green | ||
| Ada | Kantczak | ||
| Katy | F. | Madden | |
| Sasha | Porter-Bent | ||
| Moe | Su Su San | ||
| Laxmi | Babar | University Hospitals Birmingham NHS Trust (Queen Elizabeth Hospital Birmingham) | |
| Helen | Chamberlain | ||
| Tamsin | Cricklow | ||
| Alexis | Giles | ||
| Abhishek | Gupta | ||
| Clare | Hughes | ||
| Tammy | Lee | ||
| Anum | Cheema | University Hospitals Birmingham NHS Trust (Solihull Hospital) | |
| Yathu | Matheswaran | ||
| Asiodu | Nneamaka | ||
| Anekea | Ross | ||
| Tarunya | Vedutla | ||
| Theresa | J. | Allain | University Hospitals Bristol NHS Trust |
| Emily | Bowen | ||
| Julie | Dovey | ||
| Natalie | Gaskell | ||
| Deborah | Scott | ||
| Emma | Stratton | ||
| Miriam | Thake | ||
| Stuart | Bullock | University Hospitals Coventry and Warwickshire NHS Trust | |
| Siobhan | McKay | ||
| Stephanie | Radoja | ||
| Sherif | Abdelbadiee | University Hospitals of Leicester NHS Trust | |
| Samuel | Cohen | ||
| Jane | Giddings | ||
| Christopher | J. | Miller | |
| Emma | Mumtaz | ||
| Minal | D. | Patel | |
| Vishnu | Prasad | ||
| Lahiru | Satharasinghe | ||
| Mark | Studley | ||
| Marylin | Browne | University Hospitals of North Midlands NHS Trust | |
| Sabrina | K. | Durrant | |
| Emma | Jay | ||
| Alex | McQuillan | ||
| Megan | Offer | ||
| Jessel | Varghese | ||
| Alexander | Baron | University Hospitals Plymouth NHS Trust | |
| Christian | Chourot | ||
| Peter | Jackson | ||
| Kimberley | Kirrane | ||
| Helen | Rayner | ||
| Kate | Tantam | ||
| Ebrahiem | Tumi | ||
| Shabnam | Venkat | ||
| Nisha | Aggarwal | University of Birmingham | |
| Emma | Astaire | ||
| Karthik | Basker | ||
| L | Berwick | ||
| Edward | Bilton | ||
| Aimee-Louise | Chamboult | ||
| George | Chapman | ||
| Jasmine | Chevolleau | ||
| Grace | Fenneley | ||
| Shannelle | House | ||
| Nathan | Ingamells | ||
| Emilia | Jewell | ||
| Vickneswaran | Kalyaani | ||
| Mahum | Kiani | ||
| Nagarjun | Konda | ||
| Anusha | Kumar | ||
| Jo | Lai | ||
| Jamie | Large | ||
| Joanna | Livesey | ||
| Zeinab | Majid | ||
| Jack | McCready | ||
| Hannah | Moorey | ||
| Bethan | Morgan | ||
| Kirty | Morrison | ||
| Alice | Mosley | ||
| Adam | Pailing | ||
| Sophie | Pettler | ||
| Shayan | Rashid | ||
| Lucy | Rimmer | ||
| Danielle | Scarlett | ||
| Gurpreet | Sehmi | ||
| Abigail | Smith | ||
| Nina | Smith | ||
| Charles | Sprosen | ||
| Emily | Taylor | ||
| Jemima | Taylor | ||
| Connie | Tse | ||
| Sophie | Turton | ||
| Henry | Vardon | ||
| Jasmine | Virk | ||
| Sarah | Warwicker | ||
| Hannah | Woodman | ||
| Beth | L. | Woodward | |
| Luke | Wynne | ||
| Leah | Yule | ||
| Asim | Ahmad | University of Bristol | |
| Paapa | Appiah-Odame | ||
| Ciaran | Barlow | ||
| Dorothy | Kuek | ||
| Isabelle | Nicholls | ||
| Emma | Norman | ||
| Wioletta | Pyc | ||
| Ashish | Vasudev | ||
| Lawrence | A.T. | Adams | University of Dundee |
| Emma | Box | ||
| Chung Sien | Chai | ||
| Darcy | S. | Wilson | |
| Bogna | Drozdowska | University of Glasgow | |
| Emma | Elliott | ||
| Adam | Stirling | ||
| Martin | Taylor-Rowan | ||
| Hannah | Webb | ||
| Li | Wong | ||
| Ahmed | Abras | Walsall Healthcare NHS Trust | |
| Muhammad | Adam | ||
| Zarah | Amin | ||
| Olivia | Cooper | ||
| Rhianna | Davies | ||
| Wan Idoracaera | C. | Ikhwan | |
| Georgia | R. | Layton | |
| Awolkhier | Mohammedseid-Nurhussien | ||
| Sohail | Shakeel | ||
| Hana | Waraich | ||
| Jabed | Ahmed | West Hertfordshire Hospitals NHS Trust | |
| Katie | Ball | ||
| Kwasi | Debrah | ||
| Valerie | Page | ||
| Zhao | Xiao Bei | ||
| Hannah | McCauley | Western Health and Social Care Trust | |
| David | McShane | ||
| Freya | Cooper | Weston Area Health NHS Trust | |
| Natalie | Grundmann | ||
| Michael | Haley | ||
| Andre | Le Poideven | ||
| Sarah | B. | McClelland | |
| Emily | Moore | ||
| Norman | Pang | ||
| Hannah | Currie | Wye Valley NHS Trust | |
| Jayne | Davies-Morris | ||
| Sarah | Edwards | ||
| Sureena | Janagal | ||
| Rodric | Jenkin | ||
| Polly | Jones | ||
| Gary | Kumbun | ||
| Sarah | Parry | ||
| Bhav | Tyagi | ||
| Janine | Valentine | Yeovil District Hospital NHS Foundation Trust | |
| Saad | Abdullah | York Teaching Hospital NHS Foundation Trust | |
| Emmy | Abu | ||
| Sarah | Ahmad | ||
| Bilquis | Ahmed | ||
| Hamza | Ahmed | ||
| Ana | Andrusca | ||
| Matthew | Ansell | ||
| Thomas | Arkle | ||
| Imola | Bargaoanu | ||
| Charlotte | Chuter | ||
| Katie | Houldershaw | ||
| Jacqueline | Ibanichuka | ||
| Shoaib | Iqbal | ||
| Angela | Kabia | ||
| Ismail | Kadir | ||
| Anjli | Krishan | ||
| Adam | McClean | ||
| Gerry | McGonigal | ||
| Pranav | Mishra | ||
| Gladys | Ofoche | ||
| Anna | Reay | ||
| Simon | M. | Stapley | |
| Adam | Swietoslawski | ||
| Nihaad | Syed | ||
| Karthika | Velusamy | ||
| Afnan | Wahballa | ||
| James | Wilcockson | ||
References
- 1. Geriatric Medicine Research Collaborative . Delirium is prevalent in older hospital inpatients and associated with adverse outcomes: results of a prospective multi-centre study on world delirium awareness day. BMC Med 2019; 17: 229. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 2. Shrestha P, Fick DM. Family caregiver's experience of caring for an older adult with delirium: a systematic review. Int J Older People Nurs 2020; 15: e12321. [DOI] [PubMed] [Google Scholar]
- 3. Davis DH, Muniz Terrera G, Keage Het al. Delirium is a strong risk factor for dementia in the oldest-old: a population-based cohort study. Brain 2012; 135: 2809–16. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 4. Welch C, Jackson TA. Can delirium research activity impact on routine delirium recognition? A prospective cohort study. BMJ Open 2018; 8: e023386. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 5. National Institute for Health and Care Excellence . Delirium: Prevention, Diagnosis and Management 2019. Available from: https://www.nice.org.uk/guidance/cg103 (15 November 2021, date last accessed).
- 6. National Insitute for Health and Care Excellence . Delirium in Adults 2014. Available from: https://www.nice.org.uk/guidance/qs63/chapter/Quality-statement-5-Communication-of-diagnosis-to-GPs (15 November 2021, date last accessed).
- 7. Bellelli G, Morandi A, Davis DHet al. Validation of the 4AT, a new instrument for rapid delirium screening: a study in 234 hospitalised older people. Age Ageing 2014; 43: 496–502. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 8. Tieges Z, Maclullich AMJ, Anand Aet al. Diagnostic accuracy of the 4AT for delirium detection in older adults: systematic review and meta-analysis. Age Ageing 2020; 50: 733–43. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 9. Richardson SJ, Davis DHJ, Stephan BCMet al. Recurrent delirium over 12 months predicts dementia: results of the delirium and cognitive impact in dementia (DECIDE) study. Age Ageing 2020; 50: 914–20. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 10. Kripalani S, LeFevre F, Phillips CO, Williams MV, Basaviah P, Baker DW. Deficits in communication and information transfer between hospital-based and primary care physicians: implications for patient safety and continuity of care. JAMA 2007; 297: 831–41. [DOI] [PubMed] [Google Scholar]
- 11. Ryan DJ, O'Regan NA, Caoimh RÓet al. Delirium in an adult acute hospital population: predictors, prevalence and detection. BMJ Open 2013; 3: e001772. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 12. Bellelli G, Morandi A, Di Santo SGet al. "Delirium Day": a nationwide point prevalence study of delirium in older hospitalized patients using an easy standardized diagnostic tool. BMC Med 2016; 14: 106. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 13. Tauro R. Delirium awareness – improving recognition and management through education and use of a care pathway. BMJ Qual Improv Rep 2014; 2: u203195.w1451. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 14. Bauernfreund Y, Butler M, Ragavan S, Sampson EL. TIME to think about delirium: improving detection and management on the acute medical unit. BMJ Open Quality 2018; 7: e000200. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 15. NHS Digital. Hospital Admitted Patient Care Activity 2019–20, 2020. https://digital.nhs.uk/data-and-information/publications/statistical/hospital-admitted-patient-care-activity/2019-20 (15 November 2021, date last accessed).
- 16. Kuhn E, Du X, McGrath Ket al. Validation of a consensus method for identifying delirium from hospital records. PLoS One 2014; 9: e111823. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 17. Geriatric Medicine Research Collaborative . Retrospective delirium ascertainment from case notes: a retrospective cohort study. BMJ Open 2021; 11: e042440. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 18. Mcleod A, Sampson L, MacLullich A, Squires C, Vardy E . World Delirium Awareness Day Four Years On: Where has it taken us? British Geriatrics Society (Blog) 2021. https://www.bgs.org.uk/blog/world-delirium-awareness-day-four-years-on-where-has-it-taken-us (15 November 2021, date last accessed).
- 19. Socttish Intercollegiate Guidelines Network . Risk Reducation and Management of Delirium: Health Improvement Scotland; 2019. Available from: https://www.sign.ac.uk/media/1423/sign157.pdf (15 November 2021, date last accessed).
- 20. Jackson TA, Mac Lullich AMJ, Gladman JRF, Lord JM, Sheehan B. Undiagnosed long-term cognitive impairment in acutely hospitalised older medical patients with delirium: a prospective cohort study. Age Ageing 2016; 45: 493–9. [DOI] [PubMed] [Google Scholar]
Associated Data
This section collects any data citations, data availability statements, or supplementary materials included in this article.
