Prevalence Of Delirium Research Articles

Prevalence and risk factors of delirium of older adults after cardiac surgery at the intensive care unit: A retrospective study

Purpose: The purpose of this study is to identify the prevalence and risk factors of delirium of older adults after cardiac surgery at the intensive care unit (ICU). Methods: A retrospective descriptive correlational study design was used. Among 675 older adults who admitted to ICU after cardiac surgery in a tertiary hospital from May 2021 to April 2022, 528 were selected for data analysis. Data were collected through electronic medical records. Delirium and pain intensity were evaluated using the Confusion Assessment Method-Intensive Care Unit and Critical Care Non-verbal Pain Scale, respectively. Results: The incidence rate of delirium was 41.3% (n=218). Multivariate logistic regression analysis of the variables identified that ICU length of stay (odds ratio [OR]=1.77, p<.001), anesthesia time (OR=1.21, p=.016), pain intensity (OR=1.14, p=.044), and age (OR=1.07, p=.002) were identified as risk factors of delirium after cardiac surgery. Conclusion: ICU length of stay, anesthesia time, pain score, and advanced age should be considered as the prevention and management of delirium at the intensive care unit of older adults after cardiac surgery.

Delirium and Its Associations with Critical Care Utilizations and Outcomes at the Time of Hospital Discharge in Patients with Acute Brain Injury.

Background and Objectives: We analyzed delirium testing, delirium prevalence, critical care associations outcomes at the time of hospital discharge in patients with acute brain injury (ABI) due to acute ischemic stroke (AIS), non-traumatic subarachnoid hemorrhage (SAH), non-traumatic intraparenchymal hemorrhage (IPH), and traumatic brain injury (TBI) admitted to an intensive care unit. Materials and Methods: We examined the frequency of assessment for delirium using the Confusion Assessment Method for the intensive care unit. We assessed delirium testing frequency, associated factors, positive test outcomes, and their correlations with clinical care, including nonpharmacological interventions and pain, agitation, and distress management. Results: Amongst 11,322 patients with ABI, delirium was tested in 8220 (726%). Compared to patients 18-44 years of age, patients 65-79 years (aOR 0.79 [0.69, 0.90]), and those 80 years and older (aOR 0.58 [0.50, 0.68]) were less likely to undergo delirium testing. Compared to English-speaking patients, non-English-speaking patients (aOR 0.73 [0.64, 0.84]) were less likely to undergo delirium testing. Amongst 8220, 2217 (27.2%) tested positive for delirium. For every day in the ICU, the odds of testing positive for delirium increased by 1.11 [0.10, 0.12]. Delirium was highest in those 80 years and older (aOR 3.18 [2.59, 3.90]). Delirium was associated with critical care resource utilization and with significant odds of mortality (aOR 7.26 [6.07, 8.70] at the time of hospital discharge. Conclusions: In conclusion, we find that seven out of ten patients in the neurocritical care unit are tested for delirium, and approximately two out of every five patients test positive for delirium. We demonstrate disparities in delirium testing by age and preferred language, identified high-risk subgroups, and the association between delirium, critical care resource use, complications, discharge GCS, and disposition. Prioritizing equitable testing and diagnosis, especially for elderly and non-English-speaking patients, is crucial for delivering quality care to this vulnerable group.

Causal relationships between delirium and Parkinson’s disease: a bidirectional two-sample Mendelian randomization study

BackgroundPrevious observational studies have suggested a notably elevated prevalence of delirium in individuals diagnosed with Parkinson’s disease (PD), thereby implying a potential increased susceptibility to delirium among PD patients. However, it is imperative to acknowledge that observational studies inherently possess limitations, rendering it arduous to establish a definitive causal or reverse causal association between delirium and PD.MethodsTo explore the relationship between delirium and PD, a bidirectional two-sample Mendelian randomization (MR) was conducted using summary statistics obtained from genome-wide association studies. The main analysis was performed using the inverse-variance weighted (IVW) method, with further analyses conducted using MR Egger, weighted median, and weighted mode to ensure accuracy of findings. Additionally, Cochran’s Q statistics and MR Egger intercept were utilized to assess heterogeneity and horizontal pleiotropy, respectively.ResultsAccording to the results obtained from the IVW model, no compelling evidence was found to support a potential causal association between delirium and PD (IVW: odds ratio [OR]: 0.996, 95% confidence interval CI 0.949–1.043, P = 0.845). Additionally, in the reverse direction, based on the results obtained from the IVW model, no significant evidence was found to support a causal association between PD and delirium (IVW: OR: 1.078, 95%CI 0.960–1.204, P = 0.225). A sensitivity analysis verified the reliability of the results.ConclusionAccording to the MR findings, a bidirectional causal relationship between delirium and PD is not observed. It is crucial to conduct further research in clinical practice to investigate the association between delirium and the risk of PD.

Does ICU admission dysphagia independently contribute to delirium risk in ischemic stroke patients? Results from a cohort study

BackgroundDelirium is prevalent in ischemic stroke patients, particularly those in the intensive care unit (ICU), and it poses a significant burden on patients and caregivers, leading to increased mortality rates, prolonged hospital stays, and impaired cognitive function. Dysphagia, a common symptom in critically ill patients with ischemic stroke, further complicates their condition. However, the association between dysphagia and delirium in this context remains unclear. The objective of this study was to investigate the correlation between dysphagia and delirium in ICU patients with ischemic stroke.MethodsA retrospective analysis was conducted on adult patients diagnosed with ischemic stroke at a medical center in Boston. Ischemic stroke cases were identified using the ninth and tenth revisions of the International Classification of Diseases. Dysphagia was defined as a positive bedside swallowing screen performed by medical staff on the day of ICU admission, while delirium was assessed using the ICU Confusion Assessment Method and review of nursing notes. Logistic regression models were used to explore the association between dysphagia and delirium. Causal mediation analysis was employed to identify potential mediating variables.ResultsThe study comprised 1838 participants, with a median age of approximately 70 years, and 50.5% were female. Among the total study population, the prevalence of delirium was 43.4%, with a higher prevalence observed in the dysphagia group (60.7% vs. 40.8%, p < 0.001) compared to the non-dysphagia group. After adjusting for confounding factors including age, sex, race, dementia, depression, sedative medications, history of falls, visual or hearing deficit, sequential organ failure score, and Glasgow coma score, multifactorial logistic regression analysis demonstrated a significant association between dysphagia and an increased likelihood of delirium (odds ratio [OR]: 1.48; 95% confidence interval [CI]: 1.07–2.05; p = 0.018; E-value = 1.73). Causal mediation analysis revealed that serum albumin levels partially mediated the association between dysphagia and delirium in critically ill patients with ischemic stroke (average causal mediated effect [ACME]: 0.02, 95% CI: 0.01 to 0.03; p < 0.001).ConclusionICU admission dysphagia may independently contribute to the risk of delirium in patients with ischemic stroke. Early identification and intervention in ischemic stroke patients with dysphagia may help mitigate the risk of delirium and improve patient prognosis.

Delirium detection tools show varying completion rates and positive score rates when used at scale in routine practice in general hospital settings: A systematic review.

Multiple short delirium detection tools have been validated in research studies and implemented in routine care, but there has been little study of these tools in real-world conditions. This systematic review synthesized literature reporting completion rates and/or delirium positive score rates of detection tools in large clinical populations in general hospital settings. PROSPERO (CRD42022385166). Medline, Embase, PsycINFO, CINAHL, and gray literature were searched from 1980 to December 31, 2022. Included studies or audit reports used a validated delirium detection tool performed directly with the patient as part of routine care in large clinical populations (n ≥ 1000) within a general acute hospital setting. Narrative synthesis was performed. Twenty-two research studies and four audit reports were included. Tools used alone or in combination were the Confusion Assessment Method (CAM), 4 'A's Test (4AT), Delirium Observation Screening Scale (DOSS), Brief CAM (bCAM), Nursing Delirium Screening Scale (NuDESC), and Intensive Care Delirium Screening Checklist (ICDSC). Populations and settings varied and tools were used at different stages and frequencies in the patient journey, including on admission only; inpatient, daily or more frequently; on admission and as inpatient; inpatient post-operatively. Tool completion rates ranged from 19% to 100%. Admission positive score rates ranged from: CAM 8%-51%; 4AT 13%-20%. Inpatient positive score rates ranged from: CAM 2%-20%, DOSS 6%-42%, and NuDESC 5-13%. Postoperative positive score rates were 21% and 28% (4AT). All but two studies had moderate-high risk of bias. This systematic review of delirium detection tool implementation in large acute patient populations found clinically important variability in tool completion rates, and in delirium positive score rates relative to expected delirium prevalence. This study highlights a need for greater reporting and analysis of relevant healthcare systems data. This is vital to advance understanding of effective delirium detection in routine care.

Improving Outcomes in Mechanically Ventilated Adult ICU Patients Following Implementation of the ICU Liberation (ABCDEF) Bundle Across a Large Healthcare System.

To measure how the ICU Liberation Bundle (aka ABCDEF Bundle or the Bundle) affected clinical outcomes in mechanically ventilated (MV) adult ICU patients, as well as bundle sustainability and spread across a healthcare system. We conducted a multicenter, prospective, cohort observational study to measure bundle performance versus patient outcomes and sustainability in 11 adult ICUs at six community hospitals. We then prospectively measured bundle spread and performance across the other 28 hospitals of the healthcare system. A large community-based healthcare system. In 11 study ICUs, we enrolled 1,914 MV patients (baseline n = 925, bundle performance/outcomes n = 989), 3,019 non-MV patients (baseline n = 1,323, bundle performance/outcomes n = 1,696), and 2,332 MV patients (bundle sustainability). We enrolled 9,717 MV ICU patients in the other 28 hospitals to assess bundle spread. We used evidence-based strategies to implement the bundle in all 34 hospitals. We compared outcomes for the 12-month baseline and bundle performance periods. Bundle implementation reduced ICU length of stay (LOS) by 0.5 days (p = 0.02), MV duration by 0.6 days (p = 0.01), and ICU LOS greater than or equal to 7 days by 18.1% (p < 0.01). Performance period bundle compliance was compared with the preceding 3-month baseline compliance period. Compliance with pain management and spontaneous awakening trial (SAT) and spontaneous breathing trial (SBT) remained high, and reintubation rates remained low. Sedation assessments increased (p < 0.01) and benzodiazepine sedation use decreased (p < 0.01). Delirium assessments increased (p = 0.02) and delirium prevalence decreased (p = 0.02). Patient mobilization and ICU family engagement did not significantly improve. Bundle element sustainability varied. SAT/SBT compliance dropped by nearly half, benzodiazepine use remained low, sedation and delirium monitoring and management remained high, and patient mobility and family engagement remained low. Bundle compliance in ICUs across the healthcare system exceeded that of study ICUs. The ICU Liberation Bundle improves outcomes in MV adult ICU patients. Evidence-based implementation strategies improve bundle performance, spread, and sustainability across large healthcare systems.

Prevalence of Delirium After Abdominal Surgery and Association With Ketamine: A Retrospective, Propensity-Matched Cohort Study.

Delirium is a common postoperative complication for older patients in the ICU. Ketamine, used primarily as an analgesic, has been thought to prevent delirium. Determine the prevalence and association of delirium with low-dose ketamine use in ICU patients after abdominal surgery. Single-center, retrospective, propensity-matched cohort study. Eight hospital academic medical center. Cohort comprising 1836 patients admitted to the ICU after abdominal surgery between June 23, 2018 and September 1, 2022. Propensity score matching (PSM) with a 3:1 ratio between no-ketamine use and ketamine use was performed through a greedy algorithm (caliper of 0.005). Outcomes of interest included: delirium (assessed by Confusion Assessment Method-ICU), mean pain score (Numeric Pain Scale or Critical Care Pain Observation Tool score as available), mean opioid consumption (morphine milligram equivalents), length of stay (d), and mortality. Prevalence of delirium was 47.71% (95% CI, 45.41-50.03%) in the cohort. Of 1836 patients, 120 (6.54%) used low-dose ketamine infusion. After PSM, the prevalence of delirium was 56.02% (95% CI, 51.05-60.91%) in all abdominal surgery patients. The ketamine group had 41% less odds of delirium (odds ratio [OR] = 0.59; 95% CI, 0.37-0.94; p = 0.026) than patients with no-ketamine use. Patients with ketamine use had higher mean pain scores (3.57 ± 2.86 vs. 2.21 ± 2.09, p < 0.001). In the subgroup analysis, patients in the ketamine-use group 60 years old or younger had 64% less odds of delirium (OR = 0.36; 95% CI, 0.13-0.95; p = 0.039). The mean pain scores were higher in the ketamine group for patients 60 years old or older. There was no significant difference in mortality and opioid consumption. Low-dose ketamine infusion was associated with lower prevalence of delirium in ICU patients following abdominal surgery. Prospective studies should further evaluate ketamine use and delirium.

Multicentre implementation of a quality improvement initiative to reduce delirium in adult intensive care units: An interrupted time series analysis

PurposeThe ABCDEF bundle may improve delirium outcomes among intensive care unit (ICU) patients, however population-based studies are lacking. In this study we evaluated effects of a quality improvement initiative based on the ABCDEF bundle in adult ICUs in Alberta, Canada. Material and methodsWe conducted a pre-post, registry-based clinical trial, analysed using interrupted time series methodology. Outcomes were examined via segmented linear regression using mixed effects models. The main data source was a population-based electronic health record. Results44,405 consecutive admissions (38,400 unique patients) admitted to 15 general medical/surgical and/or neurologic adult ICUs between 2014 and 2019 were included. The proportion of delirium days per ICU increased from 30.24% to 35.31% during the pre-intervention period. After intervention implementation it decreased significantly (bimonthly decrease of 0.34%, 95%CI 0.18–0.50%, p < 0.01) from 33.48% (95%CI 29.64–37.31%) in 2017 to 28.74% (95%CI 25.22–32.26%) in 2019. The proportion of sedation days using midazolam demonstrated an immediate decrease of 7.58% (95%CI 4.00–11.16%). There were no significant changes in duration of invasive ventilation, proportion of partial coma days, ICU mortality, or potential adverse events. ConclusionsAn ABCDEF delirium initiative was implemented on a population-basis within adult ICUs and was successful at reducing the prevalence of delirium.

Delirium as a presenting feature on admission in medicine unit at a tertiary care hospital of Bangladesh

Background: Delirium, a complex neuropsychiatric syndrome, poses challenges in clinical settings due to its varied aetiology and under diagnosis. This study aimed to explore the prevalence, demographic characteristics, and contributing factors of delirium as a presenting feature in the population admitted to a tertiary care hospital in Bangladesh. Limited studies on delirium in low- and middle-income countries necessitate a comprehensive investigation to inform healthcare practices in diverse settings. Methods: A prospective observational study was conducted on 102 patients diagnosed with delirium among a total of 2599 patients admitted to the medicine unit over six months. Delirium was assessed using the Confusion Assessment Method (CAM) score, with demographic variables and comorbidities analyzed. Results: The study identified a delirium prevalence of 3.8%, with stroke and poisoning as major contributors. Females (56.8%), individuals above 50 years (69.8%), and those with comorbidities (67.6%) exhibited higher susceptibility to delirium. The multifactorial aetiology included stroke (49.3%), poisoning (1.42%), electrolyte imbalance (0.76%), and others. Sedative poisoning predominated (45.9%) among poisoning cases. Conclusion: This study highlights the demographic and etiological dimensions of delirium. The significant impact of stroke, the underexplored realm of poisoning-related delirium, and the influence of age and comorbidities underscore the need for targeted interventions and increased awareness. Bangladesh J Medicine 2024; 35(1): 20-25

Prevalence of Delirium and Its Related Factors in Burn Patients; a Systematic Review and Meta-Analysis.

Considering the importance of delirium disorder in burn patients and its complications, the present systematic review and meta-analysis aimed to determine the prevalence of delirium and its related factors in burn patients. A comprehensive, systematic search was performed in different international electronic databases, such as Scopus, PubMed, and Web of Science, as well as Persian electronic databases such as Iranmedex, and Scientific Information Database (SID) using keywords extracted from Medical Subject Headings such as "Prevalence", "Delirium", and "Burns" from the earliest to the 17th of July, 2023. In total, 2,710 burn patients participated in ten original studies. Among the participants, 64.6% were male. In the ten studies, the reported pooled prevalence of delirium among burn patients was 20.5% (95% CI: 10.9% to 35.0%; I2=96.889%; P<0.001). Also, factors such as total body surface area, duration of hospitalization, mortality, days on ventilator, alcoholism, benzodiazepine dose, methadone dose, age, male gender, ICU days, operation days, wound care under anesthesia, and opioid dose had a significant correlation with the prevalence of delirium in burn patients. Health managers and policymakers can reduce the prevalence of delirium in burn patients by eliminating or reducing factors associated with it.

Effectiveness of Roy Adaptation Model-Based Cognitive Stimulation Therapy in Elderly Patients with Non-Small Cell Lung Cancer Undergoing Curative Resection.

This study aimed to investigate the effects of a Roy adaptation model (RAM)-based cognitive stimulation therapy (CST) intervention on elderly patients diagnosed with primary non-small cell lung cancer (NSCLC) undergoing curative resection. A total of 280 patients diagnosed with primary NSCLC were randomized into RAM-based CST group and control group. Outcomes were assessed at three intervals: pre-surgery, discharge, and one-month post-discharge. Cognitive function was evaluated using Mini-Cognitive test. Postoperative delirium prevalence was determined within 48 hours post-surgery using Nursing Delirium Screening Scale. The Hospital Anxiety and Depression Scale evaluated anxiety and depression symptoms, while Quality of Life (QoL) was assessed via Short Form-36 (SF36) Health Survey. The RAM-based CST group demonstrated significantly higher Mini-Cog test scores than the control group upon discharge and post-intervention. Patients with RAM-based CST exhibited a decrease in postoperative delirium compared to the control group. The RAM-based CST intervention yielded an improvement in anxiety and depression at discharge and 1-month post-discharge compared to preoperative levels. Additionally, the RAM-based CST group exhibited substantial enhancements in SF36 subcategory scores at 1-month post-discharge compared to pre-surgery. At post-intervention, the RAM-based CST group demonstrated significantly higher scores than the control group across various health-related domains, including role limitations due to emotional problems, mental health, general health perception, bodily pain, and role limitations due to physical problems. The RAM-based CST intervention in elderly NSCLC patients undergoing curative resection yielded significant enhancements in cognitive function, reduced delirium incidence, improved emotional well-being, and better QoL postoperatively.

NCI-Delirium Model: Co-caring to decrease the incidence of delirium among hospitalized older adults.

Delirium negatively impacts the health and wellbeing of older adults and their family carers and contributes to unnecessary high healthcare costs, estimated at $8.8 billion per year in Australia. Improvements to clinical practice are urgently needed, particularly now, as the COVID-19 pandemic is placing an enormous burden on our hospitals. &#x0D; Innovative strategies that support partnerships with family carers have been reported as key to improved patient outcomes and satisfaction with care, particularly for older adults unable to participate in their own care. This is because carers have intimate knowledge of a family member’s cognitive state to identify early subtle changes others might not. Carers also provide valuable reassurance and familiarity to the older adults during their treatment and can orient them to place and time. &#x0D; Founded on our clinical observations, informed by a scoping review of the literature (in press) and co-designed with carers, consumers, clinicians and policy analysts, we developed a new model of delirium care: NCI-Delirium. NCI-Delirium is a validated, scalable, low risk model that values the lived experience of older adults and carers. NCI-Delirium supports the integration of carers as partners in the care of the older adult from admission into the acute care setting. To support the integration of carers as partners, they are offered a web-based Delirium Toolkit that contains: an education package to build awareness and skill development (e.g., delirium risk factors, therapeutic and preventive strategies and non-pharmacological interventions to manage the reorientation of the hospitalised older adult); a 7-item psychometrically tested screening tool designed for carers to identify delirium symptoms and people at risk of delirium; access to support resources (e.g., counselling, social prescriptions, peer-support); and a co-designed discharge plan with the health team. &#x0D; Preliminary results suggest that NCI-Delirium improves health service delirium outcomes. Carer involvement in this research, and the introduction of their perspectives, has elevated carers’ key relationships with clinicians. Our co-designed solution to support the integration of carers as partners in delirium management has improved carers’ caregiving burden, psychological wellbeing and knowledge of delirium. This translatable co-designed model of care provides the much needed rich and robust clinical, implementation and economic evidence, to address the risk factors associated with the prevalence of delirium in hospitalised older adults. It is anticipated that the model will transform how we integrate carers as partners in care to improve clinical practice, patient and carer experiences; and reduce caregiving burden.&#x0D; Globally, the identification and management of risk for delirium is imperative. Delirium is a potentially life-threatening condition, and not well detected in the acute or community care setting. If carers are integrated and supported as partners in care, the capacity to identify symptoms and support the diagnosis of delirium should increase, potentially reducing functional decline, transition to residential aged care facilities and mortality rates. The next steps are to evaluate this co-designed web-based delirium model of care for use by carers in the community and residential aged care setting.&#x0D;

Nursing diagnoses as factors associated with delirium among intensive care unit patients with sepsis: A retrospective correlational study.

To examine whether nursing diagnoses were associated with delirium in patients with sepsis. Nursing diagnosis is a nurse's clinical judgement about clients' current or potential health conditions. Delirium is regarded as an important nurse-sensitive outcome. Nonetheless, nursing diagnoses associated with delirium have not yet been identified. Retrospective correlational study. This study was carried out from December 2021 to January 2023. We analysed electronic health records of patients with sepsis admitted to the intensive care units (ICUs) of a tertiary hospital in Seoul, South Korea. Delirium was defined based on the Intensive Care Delirium Screening Checklist score. Nursing diagnoses established within 24 h of admission to the ICU were included and were based on the North American Nursing Diagnosis Association diagnostic classification. The data were analysed using logistic regression. Demographics, comorbidities, procedures and physiological measures were adjusted. Regression model was evaluated via receiver operating characteristic curve, Nagelkerke R2, accuracy and F1 score. The prevalence of delirium in patients with sepsis was 51.8%. Ineffective breathing patterns, decreased cardiac output and impaired skin integrity were significant nursing diagnoses related to delirium. Age ≥ 65 years, Acute Physiology and Chronic Health Evaluation II score, mechanical ventilation, continuous renal replacement therapy, physical restraint and comatose state were also associated with delirium in patients with sepsis. The area under the receiver operating characteristic curve was 0.806. Ineffective breathing patterns, decreased cardiac output and impaired skin integrity could manifest as prodromal symptoms of delirium among patients with sepsis. The prodromal symptoms of delirium revealed through nursing diagnoses can be efficiently used to identify high-risk groups for delirium. The use of nursing diagnosis system should be recommended in clinical practice caring for sepsis patients. STROBE checklist. No patient or public involvement.

ACCELERATED BIOLOGICAL AGE IS ASSOCIATED WITH DELIRIUM AND PLASMA NEUROFILAMENT LIGHT IN GERIATRIC HIP FRACTURE

Abstract Background Biological age may be distinct from chronological age. Epigenetic clocks (e.g., PhenoAge) estimate biological age by quantifying changes in DNA methylation (DNAm). Biological age is “accelerated” (AgeAccel) when epigenetic&amp;gt;chronological age. AgeAccel predicts age-related diseases but its association with delirium or neuronal injury markers (e.g., neurofilament light “NfL”) is unknown. Methods Adults age 65+ hospitalized for acute hip fracture underwent daily delirium screening with the Confusion Assessment Method Long Form. DNAm status of 850,000 CpG sites was measured in triplicate from pre-op peripheral blood mononuclear cells using Illumina MethylationEPIC arrays. AgeAccel represented the residual of the linear regression model of PhenoAge regressed on chronological age. Plasma NfL was measured in duplicate using Simoa immunoassays. Group differences calculated by T-test. Results Of 12 subjects (enrollment ongoing): mean age 79±8, 75% women, 42% with dementia, 33% were delirious on pre-op blood collection day. Mean AgeAccel was 4.4 years (p=0.02) in delirious vs non-delirious subjects (Fig1A). Those with positive (vs negative) AgeAccel had higher mean NfL (Fig1B, p=0.002). Delirious (vs non-delirious) subjects had higher mean NfL (p=0.004). We found no difference in either AgeAccel or NfL by dementia status. Conclusions In this geriatric hip fracture pilot, accelerated biological age was associated with higher delirium prevalence and NfL. Delirium was also associated with higher NfL. This pilot demonstrates feasibility and utility of measuring biological aging in delirium that warrants study in a larger cohort.

Risk factors, preventive interventions, overlapping symptoms, and clinical measures of delirium in elderly patients.

Delirium is an acute reversible neuropsychiatric syndrome caused by multiple factors. It is associated with many adverse clinical outcomes including cognitive impairment, functional decline, prolonged hospitalization, and increased nursing service. The prevalence of delirium was high in department of cardiology, geriatric, and intensive care unit of hospital. With the increase in the aged population, further increases in delirium seem likely. However, it remains poorly recognized in the clinical practice. This article comprehensively discusses the latest research perspectives on the epidemiological data, risk factors, preventive interventions, overlapping symptoms, and clinical measures of delirium, including specific measures to manage delirium in clinical real-world situations. This article helps readers improve their knowledge and understanding of delirium and helps clinicians quickly identify and implement timely therapeutic measures to address various delirium subtypes that occur in the clinical settings to ensure patients are treated as aggressively as possible.

Expanded nursing roles to promote person-centred care for people with cognitive impairment in acute care (ENROLE-acute): study protocol for a controlled clinical trial, process and economic evaluation

BackgroundFor people with cognitive impairment, hospitalisation is challenging and associated with adverse events as well as negative outcomes resulting in a prolonged hospital stay. Person-centred care can improve the quality of care and the experience of people with cognitive impairment during hospitalisation. However, current care processes in German hospitals are rarely person-centred. To enable successful implementation of person-centred care on hospital wards, change agents within the interprofessional team are key. The aim of this study is to test the feasibility and initial effects of a newly developed complex person-centred care intervention for people with cognitive impairment provided by expanded practice nurses in acute care.MethodsWe will conduct an exploratory non-randomised controlled clinical trial with accompanying process and cost evaluation with three intervention and three control wards at one university hospital. The person-centred care intervention consists of 14 components reflecting the activities of expanded practice nurses within the interprofessional team on the intervention wards. The intervention will be implemented over a six-month period and compared with optimised care on the control wards. We will include people aged 65 years and older with existing cognitive impairment and/or at risk of delirium. The estimated sample size is 720 participants. The primary outcome is length of hospital stay. Secondary outcomes include prevalence of delirium, prevalence of agitation, sleep quality, and person-centred care. We will collect patient level data at six time points (t1 admission, t2 day 3, t3 day 7, t4 day 14, t5 discharge, t6 30 days after discharge). For secondary outcomes at staff level, we will collect data before and after the intervention period. The process evaluation will examine degree and quality of implementation, mechanisms of change, and the context of the complex intervention. The economic evaluation will focus on costs from the hospital’s perspective.DiscussionThe ENROLE-acute study will provide insights into the effectiveness and underlying processes of a person-centred care intervention for people with cognitive impairment provided by expanded practice nurses on acute hospitals wards. Results may contribute to intervention refinement and evidence-based decision making.Trial registrationCurrent controlled trials: ISRCTN81391868. Date of registration: 12/06/2023. URL: https://doi.org/10.1186/ISRCTN81391868

Association between statin use on delirium and 30-day mortality in patients with chronic obstructive pulmonary disease in the intensive care unit

BackgroundDelirium occurs frequently in patients with chronic obstructive pulmonary disease in the intensive care unit. Effective prevention and treatment strategies for delirium remain limited. We aimed to assess delirium and 30-day mortality in patients with chronic obstructive pulmonary disease who were statin and non-statin users.MethodsIn this retrospective study, patients with chronic obstructive pulmonary disease were identified from the Medical Information Mart for Intensive Care database (MIMIC-IV). The primary exposure variable was the use of statins 3 days after entering the intensive care unit and the primary outcome measure was the presence of delirium. The secondary outcome measure was 30-day mortality. Since the cohort study was retrospective, we used an inverse probability weighting derived from the propensity score matching to balance different variables.ResultsAmong a cohort of 2725 patients, 1484 (54.5%) were statin users. Before propensity score matching, the prevalence of delirium was 16% and the 30-day mortality was 18% in patients with chronic obstructive pulmonary disease. Statin use was significantly negatively correlated with delirium, with an odds ratio of 0.69 (95% CI 0.56–0.85, p < 0.001) in the inverse probability weighted cohort and 30-day mortality of 0.7 (95% CI 0.57–0.85, p < 0.001).ConclusionsStatin use is associated with a lower incidence of delirium and 30-day mortality in patients with chronic obstructive pulmonary disease in the intensive care unit.

P197: Delirium in nursing homes (DeliA) - an interdisciplinary health services research project

Background:Delirium is a potential emergency with serious consequences. Little attention has been paid to residents of nursing homes, although they are at extreme risk for developing delirium. Health Care Professionals (HCPs) such as nurses and general practitioners are assumed to know little about delirium in nursing homes.Objectives:The German project DeliA (delirium in nursing homes) comprises three sub- studies and two reviews. The sub-studies have the following objectives: (1) to determine the prevalence of delirium and its sub-types in German nursing homes; (2) to describe and assess the quality of delirium care practices (prevention, diagnosis, therapy) of HCPs in nursing homes; and (3) to develop a Technology Enhanced Learning (TEL) to increase the delirium- specific knowledge of HCPs in nursing homes. The reviews aim to (a) summarize the prevalence of delirium reported in international studies and (b) to find out how, why and under what context education for HCPs in nursing homes works.Methods:A systematic review of the reported prevalence of delirium in nursing homes will be conducted (a). The prevalence study (1) will assess delirium and its proposed associated factors in at least 50 nursing homes using validated measurements. Medication schedules of participating residents will be analyzed to determine potential for delirium. To describe current practice, process-oriented semi-structured guided interviews will be conducted with 30 representatives of the (nursing home) medical service and the nursing service of nursing homes (2). As a theoretical basis for the TEL, a realist review will be conducted to understand the active ingredients of educational interventions and to develop an initial program theory (b). The curriculum for the proposed TEL will be developed based on a synthesis of existing curricula and evaluated by Delphi experts for relevance, comprehensiveness, and content. A final feasibility study will assess the potential increase in knowledge about delirium among HCPs (n = 50) in nursing homes (3).Expected Results:It is expected that the project and the dissemination of its findings will raise awareness among HCPs and the public about delirium in nursing homes. The developed TEL and its underlying program theory will be further tested.

Clinical Manifestations.

Delirium is common in elderly, frail residents in care home settings, who may already be suffering from dementia. The prevalence of delirium in nursing homes can be up to 60%. Care home staff are potentially in a unique position to identify the subtle changes that can precede a full-blown episode of delirium. Towards this aim, as a part of frailty initiative West Midlands, a delirium app, called 'Delirium Wheel' (https://rb.gy/ns80hw) was developed. In order to explore the feasibility of the Delirium Wheel (DW) app to support care home staff to care for patients experiencing delirium, a feasibility study was carried out between October 2022 to May 2023 in 6 care homes in Staffordshire. The care homes were given delirium app training and a survey was carried out to assess their baseline knowledge and skills in the identification and management of delirium. A further survey was carried out 12 weeks following the implementation of the app, with qualitative interviews carried out with a sample of the care home staff. The study is currently at Stage 1 of the data collection phase and the initial surveys have been collected evaluating baseline knowledge and practice within the care homes. Staff members have now been interviewed as part of Stage 2 of the study process, with the qualitative data currently being transcribed. The full results are expected to be reported by the end of April 2023. This study is the first research which formally tests this unique app as a digital tool to support healthcare professionals in the identification and management of a very common condition such as delirium. This empowers care home staff to have confidence in their own skills and have an app to support if there is any clinical uncertainty. As a result of this intervention, the probability of patient's being able to be managed within the care home setting increases, leading to better patient related outcomes.

Factors associated with disagreement between clinician app-based ultra-brief Confusion Assessment Method and reference standard delirium assessments.

Recently, the Ultra-Brief Confusion Assessment Method (UB-CAM), designed to help physicians and nurses to recognize delirium, showed high, but imperfect, accuracy compared with Research Reference Standard Delirium Assessments (RRSDAs). The aim of this study is to identify factors associated with disagreement between clinicians' app-based UB-CAM assessments and RRSDAs. This is a secondary analysis of a prospective diagnostic test study. The study was conducted at two hospitals and included 527 inpatients (≥70 years old) and 289 clinicians (53 physicians, 236 nurses). Trained research associates performed RRSDAs and determined delirium presence using the CAM. Clinicians administered the UB-CAM using an iPad app. Disagreement factors considered were clinician, patient, and delirium characteristics. We report odds ratios and 95% confidence intervals. One thousand seven hundred and ninety-five clinician UB-CAM assessments paired with RRSDAs were administered. The prevalence of delirium was 17%. The rate of disagreement between clinician UB-CAM assessments and RRSDAs was 12%. Significant factors associated with disagreement between clinician UB-CAM assessments and RRSDAs (OR [95% CI]) included: presence of dementia (2.7 [1.8-4.1]), patient education high school or less (1.9 [1.3-2.9]), psychomotor retardation (2.5 [1.4-4.2]), and the presence of mild delirium or subsyndromal delirium (5.5 [3.5-8.7]). Significant risk factors for false negatives were patient age less than 80 (2.2 [1.1-4.3]) and mild delirium (3.5 [1.6-7.4]). Significant risk factors for false positives were presence of dementia (4.0 [2.3-7.0]), subsyndromal delirium (5.1 [2.9-9.1]), and patient education high school or less (2.0 [1.2-3.6]). Clinician characteristics were not significantly associated with disagreement. The strongest factors associated with disagreement between clinician UB-CAM screens and RRSDAs were the presence of dementia and subsyndromal delirium as risk factors for false positives, and mild delirium and younger age as a risk factor for false negatives. These disagreement factors contrast with previous studies of risk factors for incorrect clinician delirium screening, and better align screening results with patient outcomes.