The financial and social costs of delirium

Delirium on presentation with a hip fracture is associated with adverse outcomes : a multicentre observational study of 18,040 patients using national clinical registry data

Aims

Delirium is common in hip fracture patients, but large-scale routine data studies examining the prevalence and associations of delirium at the time of initial presentation with a hip fracture are rare. This study aimed to describe the prevalence and outcomes of delirium on initial presentation with a hip fracture in a large national population sample.

Methods

This study analyzed routinely collected national clinical registry data for all people in Scotland aged 50 years and over presenting with a hip fracture between 1 July 2019 and 31 December 2021. Delirium was assessed prospectively by clinicians as part of routine care using the 4AT, a validated two-minute assessment tool. Associations of 4AT score with mortality and return home within 30 days were analyzed using logistic regression models, adjusted for confounders.

Results

Of 18,040 patients (mean age 80 years (SD 10); 70% female (n = 12,594)), 16,476 (91%) had a 4AT assessment on presentation and of these, 3,386 (21%) had a score ≥ 4, suggestive of delirium. Patients with delirium were older, more likely residing in care homes, and had higher American Society of Anesthesiologists grades (all p < 0.001). Delirium was independently associated with a twofold increased risk of inpatient mortality (adjusted odds ratio (aOR) 2.26 (95% CI 1.79 to 2.84)) and one-year mortality (aOR 2.05 (95% CI 1.83 to 2.29)), and a lower likelihood of returning home within 30 days (aOR 0.27 (95% CI 0.24 to 0.30)).

Conclusion

Delirium affects around 20% of patients presenting with a hip fracture, and is associated with important adverse outcomes. Integrating delirium assessment into the initial clinical assessment of hip fracture patients is feasible at national scale, and should be considered as part of care for all hip fracture patients.

Evaluation of Delirium Risk Factors in Intensive Care Patients

Objective

The negative effects of delirium in intensive care unit (ICU) patients necessitate the identification and management of risk factors. This study aimed to determine the incidence of delirium and its associated modifiable and non-modifiable factors in the ICU setting to provide valuable insights for better patient care and outcomes.

Methods

Patients admitted to the ICU underwent delirium screening twice daily. Comprehensive records of modifiable and non-modifiable risk factors were maintained throughout the ICU stay.

Results

The incidence of delirium was 32.5%. Age [odds ratio (OR) 1.04, confidence interval (CI) 1.02-1.06, P < 0.001)]. Illiteracy (OR 4, CI 1.19-13.35, P=0.02), hearing impairment (OR 3.37, CI 1.71-7.01, P=0.001), visual impairment (OR 3.90, CI 2.13-7.15, P < 0.001), hypertension (OR 2.56, CI 1.42-4.62, P=0.002), Sequential Organ Failure Assessment score (OR 1.21, CI 1.08-1.36, P=0.001), Acute Physiology and Chronic Health Evaluation II score (OR 1.20, CI 1.12-1.28, P < 0.001), presence of a nasogastric catheter/drain (OR 2.15, CI 1.18-3. 90, P=0.01), tracheal aspiration (OR 3.63, CI 1.91-6.90, P < 0.001), enteral nutrition (OR 2.54, CI 1.12-5.76, P=0.02), constipation (OR 1.65, Cl 1.11-2.45, P=0.02), oliguria (OR 1.56, Cl 1.06-2.28, P=0.02), midazolam infusion (OR 3. 4, Cl 1.16-10.05, P=0.02), propofol infusion (OR 2.91 Cl 1.03-8.19, P=0.04), albumin use (OR 2.39, Cl 1.11-5.14 P=0.02) and steroid use (OR 2.17, Cl 1.06-4.40, P=0.03) were found to be independent risk factors for delirium.

Conclusion

This study highlights several risk factors contributing to delirium, such as age, sensory impairment, educational level, procedural interventions, and medications. Oral nutrition and mobilization are effective strategies for reducing delirium incidence in the ICU.

The likelihood of hospital-acquired complications in older people with dementia: a matched cohort study

OBJECTIVES

To investigate whether the likelihood of hospital-acquired complications for older people in Australia differs by whether they have dementia.

STUDY DESIGN

Matched cohort study.

SETTING, PARTICIPANTS

People aged 60 years or older with dementia who were admitted to five public hospitals in the South Western Sydney Local Health District, New South Wales, 1 January 2010 to 31 December 2020, and people without dementia admitted during the same period, matched by age, sex, number of medical conditions, and presence of selected specific medical conditions, emergency admission status, history of falls, and admission from a nursing home.

MAIN OUTCOME MEASURES

Hospital-acquired complications (falls, pressure injuries, delirium, pneumonia, venous thromboembolism, new incontinence, malnutrition, in-hospital death), by dementia status.

RESULTS

A total of 217 459 people aged 60 years or older were admitted to the five hospitals during the study period. The mean age of the 11 393 patients with dementia (83 years; standard deviation [SD], 7.5 years) was higher than that of the 206 065 patients without dementia (73 years; SD, 8.9 years), and the proportion of women slightly larger (55% v 50%). Median hospital length of stay was longer for people with dementia (nine days; interquartile range [IQR], 4-19 days) than for people without dementia (three days; IQR, 1-9 days), and the number of in-hospital deaths higher (768, 7% v 584, 5%). After propensity score-based matching, the risks of falls (odds ratio [OR], 4.7; 95% confidence interval [CI], 3.8-5.7), pressure injury (OR, 1.4; 95% CI, 1.1-1.8), delirium (OR, 2.4; 95% CI, 2.0-3.0), and pneumonia (OR, 1.3; 95% CI, 1.01-1.7) were higher for people with dementia than for those without dementia; differences between the two groups in the risks of venous thromboembolism, malnutrition, and incontinence were not statistically significant.

CONCLUSIONS

Given the greater risk of many hospital-acquired complications for people with dementia, targeted models of person-centred care are needed to ensure the best outcomes for these patients.

Preventing delirium in post-acute care

ABSTRACT

Older adults admitted to post-acute care often are frail with multiple comorbidities, making them particularly vulnerable to developing delirium. The purpose of this quality improvement project was to create, implement, and evaluate an NP-led, evidence-based delirium prevention protocol in a skilled nursing facility (SNF). The incidence of new-onset delirium was assessed pre- and postimplementation; following implementation, no patients were diagnosed with new-onset delirium, and nurses and certified nursing assistants reported changes to their practice. Based on project design, the approximately 42,000 NPs in the US with nursing home or long-term-care facility privileges are optimally positioned to lead SNFs in the prevention of new-onset delirium.

Improving hospice delirium guideline adoption through an understanding of barriers and facilitators: A mixed-methods study

OBJECTIVES

This study seeks to understand and address barriers to practitioners' optimal assessment and management of people with delirium in hospices.

METHODS

Retrospective clinical record review to identify areas of low concordance with guideline-adherent delirium care; Survey of healthcare practitioners to identify barriers and facilitators to optimal care; Qualitative interviews with health care practitioners to explore and develop strategies to address barriers or optimise facilitators; Meeting with senior clinical staff to refine identified strategies.

RESULTS

Eighty clinical records were reviewed. Elements of poor guideline concordance were identified. Delirium screening on admission was conducted for 61% of admissions. Non-pharmacological management was documented for 59% of those we identified as having delirium from the clinical records. Survey and interview data identified key barriers to delirium assessment as competing priorities, poor knowledge and skills and lack of environmental resources (staff and guidelines, environment). Consultation with staff resulted in strategies to address barriers and enhance facilitators including champions, educational meetings, audit and feedback, and environmental changes (including careful consideration of the staff skills mix on shift and tools to support non-pharmacological management).

CONCLUSIONS

We conducted a theoretically underpinned, internationally relevant study in a hospice in England, UK. Implementation of strategies should result in greater guideline-adherent delirium care. Further work should test this in practice and include both process and clinical outcomes (e.g., reduction in delirium days).

Improving delirium assessments in acute senior health: A quality improvement project for care of the older person

BACKGROUND

Delirium is a common and reversible neurobehavioral condition with significant morbidity and mortality ramifications for older patients. Consequentially, clear guidelines exist pertaining to its swift identification and management. However, studies suggest that adherence to these guidelines are poor. This audit aimed to evaluate compliance to the National Institute for Health and Care Excellence's (NICE) delirium guidelines in an Acute Senior Health Unit (ASHU) and to present a single centre experience of a low-cost ward-based intervention for improving delirium guideline adherence.

METHODS

A retrospective observational audit was conducted on patients admitted to ASHU between 01/07/2023 and 30/07/2023. Data on delirium assessments, diagnoses and causes of delirium were obtained through retrospective database searches. Posters and education based multidisciplinary team (MDT) interventions were designed and initiated following grounded thematic literature analysis and ward discussion. A methodically equivalent audit was then conducted between 01/09/2023 and 30/09/23. Data was anonymised and blinded and analysis was performed on SPSS V12.0.

RESULTS

A total of 128 patients were included in the study. Initial audit revealed suboptimal compliance with NICE recommendations. Chi-square test of independence found that patients were statistically more likely to receive a full delirium assessment (1.9% vs. 56.6%, p = 0.001) and formal diagnosis (5.8% vs. 27.6%, p = 0.002) after the ward-based intervention.

CONCLUSION

This study provides limited evidence in favour of low-cost MDT based interventions for improving adherence to NICE delirium guidelines and provides a 5-step framework for future studies. This study also explores the potential patient implications of these interventions. A repeat audit should be conducted to ensure lasting and sustainable change is achieved.

TRIAL REGISTRATION/CLINICAL TRIAL NUMBER

AUDI003614.

Detection of delirium in older patients-A point prevalence study in surgical and non-surgical hospital wards

AIMS AND OBJECTIVES

To (i) determine the prevalence of delirium and identify delirium subtypes in surgical and non-surgical patients aged ≥65 years, (ii) determine whether certain precipitating factors affect the prevalence of delirium and (iii) review patients' medical records for description of delirium symptoms and the presence of International Classification of Diseases (ICD-10) coding for delirium in discharge summaries.

METHODOLOGICAL DESIGN AND JUSTIFICATIONS

Despite being a robust predictor of morbidity and mortality in older adults, delirium might be inadequately recognised and under-reported in patients' medical records and discharge summaries. A point prevalence study (24-h) of patients ≥65 years from surgical and non-surgical wards was therefore conducted in a tertiary university hospital.

ETHICAL ISSUES AND APPROVAL

The study was approved by the Data Protection Officer at the university hospital (2018/3454).

RESEARCH METHODS, INSTRUMENTS AND/OR INTERVENTIONS

Patients were assessed for delirium with 4AT and delirium subtypes with the Delirium Motor Subtype Scale. Information about room transfers, need and use of sensory aids and medical equipment was collected onsite. Patients' medical records were reviewed for description of delirium symptoms and of ICD-10 codes.

RESULTS

Overall, 123 patients were screened (52% female). Delirium was identified in 27% of them. Prevalence was associated with advanced age (≥85 years). The uncharacterised delirium subtype was most common (36%), followed by hypoactive (30%), hyperactive (24%) and mixed (9%). There were significant associations between positive screening tests and the need and use of sensory aids. Delirium symptoms were described in 58% of the patients who tested positive for delirium and the ICD-10 code for delirium was registered in 12% of these patients' discharge summaries.

CONCLUSIONS

The high prevalence of delirium and limited use of discharge codes highlight the need to improve the identification of delirium in hospital settings and at discharge. Increased awareness and detection of delirium in hospital settings are vital to improve patient care.

Organizational Context and Facilitation Interactions on Delirium Risk in Long-Term Care: A Cross-Sectional Study

OBJECTIVES

Organizational context (eg, leadership) and facilitation (eg, coaching behaviors) are thought to interact and influence staff best practices in long-term care (LTC), including the management of delirium. Our objective was to assess if organizational context and facilitation-individually, and their interactions-were associated with delirium in LTC.

DESIGN

Retrospective cross-sectional analysis of secondary data.

SETTING AND PARTICIPANTS

We included 8755 residents from 281 care units in 86 LTC facilities in 3 Canadian provinces.

METHODS

Delirium (present/absent) was assessed using the Resident Assessment Instrument-Minimum Data Set 2.0 (RAI-MDS 2.0). The Alberta Context Tool (ACT) measured 10 modifiable features of care unit organizational context. We measured the care unit's total care hours per resident day and the proportion of care hours that care aides contributed (staffing mix). Facilitation included the facility manager's perception of RAI-MDS reports' adequacy and pharmacist availability. We included unit managers' change-oriented organizational citizenship behavior (OCB) and an item reflecting how often care aides recommended policy changes. Associations of organizational context, facilitation, and their interactions with delirium were analyzed using mixed-effects logistic regressions, controlling for covariates.

RESULTS

Delirium symptoms were prevalent in 17.4% of residents (n = 1527). Manager-perceived adequacy of RAI-MDS reports was linked to reduced delirium symptoms [odds ratio (OR) = 0.63]. Higher care hours per resident day (OR = 1.2) and an available pharmacist in the facility (OR = 1.5) were associated with increased delirium symptoms. ACT elements showed no direct association with delirium. However, on care units with low social capital scores (context), increased unit managers' OCB decreased delirium symptoms. On care units with high vs low evaluation scores (context), increased staffing mix reduces delirium symptoms more substantially.

CONCLUSIONS AND IMPLICATIONS

Unit-level interactions between organizational context and facilitation call for targeted quality improvement interventions based on specific contextual factors, as effectiveness may vary across contexts.

Educational interventions aimed at improving knowledge of delirium among nursing home staff-a realist review

BACKGROUND

Delirium is a neuropathological syndrome that is characterised by fluctuating impairments in attention, cognitive performance, and consciousness. Since delirium represents a medical emergency, it can be associated with adverse clinical and economic outcomes. Although nursing home residents face a high risk of developing delirium, health care professionals in this field appear to have limited knowledge of delirium despite the critical role they play in the prevention, diagnosis, and treatment of delirium in nursing homes.

OBJECTIVE

The purpose of this realist review is to develop an initial programme theory with the goal of understanding how, why, and under what circumstances educational interventions can improve the delirium-specific knowledge of health care professionals in nursing homes.

METHODS

This realist review was conducted in accordance with the RAMESES (Realist And Meta-narrative Evidence Synthesis: and Evolving Standards) guidelines and includes the following steps: (1) search strategy and literature review; (2) study selection and assessment; (3) data extraction; (4) data synthesis; and (5) development of an initial programme theory. It also included stakeholder discussions with health care professionals recruited from nursing home care, which focused on their experiences with delirium.

RESULTS

From a set of 1703 initially identified publications, ten publications were included in this realist review. Based on these publications, context-mechanism-outcome configurations were developed; these configurations pertained to (1) management support, (2) cognitive impairments among residents, (3) familiarity with residents, (4) participatory intervention development, (5) practical application, (6) case scenarios, (7) support from experts and (8) relevance of communication.

CONCLUSIONS

Educational interventions aimed at improving the delirium-specific knowledge of health care professionals should feature methodological diversity if they are to enhance health care professionals' interest in delirium and highlight the fundamental contributions they make to the prevention, diagnosis, and treatment of delirium. Educational interventions should also take into account the multidimensional contextual factors that can have massive impacts on the relevant mode of action as well as the responses of health care professionals in nursing homes. The identification of delirium in residents is a fundamental responsibility for nursing home staff.

TRIAL REGISTRATION

This review has been registered at Open Science Framework https://doi.org/10.17605/OSF.IO/6ZKM3.

A Dual-Camera Eye-Tracking Platform for Rapid Real-Time Diagnosis of Acute Delirium: A Pilot Study

OBJECTIVE

Delirium, an acute confusional state, affects 20-80% of patients in Intensive Care Units (ICUs), one in three medically hospitalized patients, and up to 50% of all patients who have had surgery. Its development is associated with short- and long-term morbidity, and increased risk of death. Yet, we lack any rapid, objective, and automated method to diagnose delirium. Here, we detail the prospective deployment of a novel dual-camera contextual eye-tracking platform. We then use the data from this platform to contemporaneously classify delirium.

RESULTS

We recruited 42 patients, resulting in 210 (114 with delirium, 96 without) recordings of hospitalized patients in ICU across two centers, as part of a prospective multi-center feasibility pilot study. All recordings made with our platform were usable for analysis. We divided the collected data into training and validation cohorts based on the data originating center. We trained two Temporal Convolutional Network (TCN) models that can classify delirium using a pre-existing manual scoring system (Confusion Assessment Method in ICU (CAM-ICU)) as the training target. The first model uses eye movements only which achieves an Area Under the Receiver Operator Curve (AUROC) of 0.67 and a mean Average Precision (mAP) of 0.68. The second model uses the point of regard, the part of the scene the patient is looking at, and increases the AUROC to 0.76 and the mAP to 0.81. These models are the first to classify delirium using continuous non-invasive eye-tracking but will require further clinical prospective validation prior to use as a decision-support tool.

CLINICAL IMPACT

Eye-tracking is a biological signal that can be used to identify delirium in patients in ICU. The platform, alongside the trained neural networks, can automatically, objectively, and continuously classify delirium aiding in the early detection of the deteriorating patient. Future work is aimed at prospective evaluation and clinical translation.

Functional intervention following cardiac surgery to prevent postoperative delirium in older patients (FEEL WELL study)

BACKGROUND

Postoperative delirium is a common complication in patients after cardiac surgery, especially in older patients, and can manifest as a disturbance of attention and consciousness. It can lead to increased postoperative morbidity, prolonged need for care, and mortality. The presented study investigates whether the occurrence of postoperative delirium after cardiac surgery can be prevented by a multisensory stimulation. It was conducted as a prospective, randomized, controlled, non-pharmacological intervention study in the years 2021 and 2022 at the University Hospital Bonn in Germany. A total of 186 patients over 65 years with elective cardiac surgery were enrolled. Patients were randomized either to the intervention or control group. In both groups, postoperative delirium was assessed with the 3-min diagnostic interview for confusion assessment method on the first 5 days after surgery and pain was assessed using the Numeric Rating Scale. Multisensory stimulation was performed 20 min a day for the first three postoperative days in the intervention group.

RESULTS

The incidence of postoperative delirium was 22.6% in the intervention group and 49.5% in the control group (p < 0.001). Duration of postoperative delirium was significantly shorter in the intervention group (p < 0.001). Stay in the intensive care unit was significantly longer in the control group (p = 0.006). In the regression model non-intervention, high pain scores, advanced age, and prolonged mechanical ventilation were associated with postoperative delirium (p = 0.007; p = 0.032; p = 0.006; p = 0.006, respectively).

CONCLUSIONS

Results of the study imply that a multisensory stimulation done on the first 3 days after planned cardiac surgery can reduce the incidence and duration of postoperative delirium in older patients. Influence of the treatment on the incidence of delirium in other patient groups, the length of stay in the intensive care unit, and patients´ postoperative pain should be confirmed in further clinical studies.

TRIAL REGISTRATION

DRKS, DRKS00026909. Registered 28 October 2021, Retrospectively registered, https://drks.de/search/de/trial/DRKS00026909 .

Family-centered delirium prevention and treatment using video calls: the FACE Delirium trial

PURPOSE

In the FACE Delirium trial, we investigated the feasibility of a structured FAmily-CEntered delirium prevention and treatment during the corona pandemic.

METHODS

Patients hospitalized in a German geriatric medicine department were included in this single-center, prospective, single-arm feasibility study. Their relatives received a short training on delirium and volunteers or paid staff members facilitated video calls. The primary endpoint was reached when contact between patients and their relatives occurred on ≥ 80% of treatment days, either via video call or visit.

RESULTS

38 patients were included (age 83.0 ± 5.9 years; 73.7% women). 76.3% reached the primary endpoint. Due to the pandemic, 99.3% of the contacts were video calls with a duration of 24.8 ± 16.3 min.

CONCLUSION

Family-centered delirium prevention and treatment using video calls is feasible among hospitalized geriatric patients. Daily implementation in clinical practice poses challenges and requires motivated and qualified staff.

Impact of a passive clinical decision support tool on potentially inappropriate medications (PIM) use in older adult patients

BACKGROUND

Medication related clinical decision support (CDS) interventions may improve patient safety. In older patient populations, there has been effort placed in reducing exposure to potentially inappropriate medications (PIMs). After years of reducing exposure of older adults in our hospitals to PIMs through multi-component interventions, our system chose to expand the scope and attempt a new strategy to lessen alert burden for providers and pharmacists. Based on the American Geriatric Society Beers Criteria and internal data, a passive CDS approach, termed "geriatric context" was established to recommend appropriate medication selection including lower dosage amounts and frequency of administration in older adults.

METHODS

Retrospective descriptive study examining change in a pre and post implementation analysis of medication usage patterns between two 9-month time periods in 2019 and 2021 in patients age ≥65 years across an 8-hospital health system. The primary endpoint is the percentage of each medication intervened with an ordered dose and frequency outside of alignment with recommended context parameters. Secondary endpoints include total daily dose (TDD) and average dose (AD) per patient of the individual PIMs. Exploratory endpoints include frequency of active alerts fired by the CPOE and overridden by providers.

RESULTS

A total of 62,738 older adult hospital admissions are included in the overall study period, with 32,969 pre-implementation and 29,769 post-implementation. Haloperidol showed the greatest reduction in inappropriate doses from 41.5% to 21.4% (p < 0.001) of orders, followed by reduction in inappropriate frequencies in orders for diphenhydramine from 57.2% to 39.7% (p < 0.001). Secondary endpoints showed favorable reductions across 11 of the 16 medications in both TDD and AD administered. Exploratory analysis with select medications showed reductions in frequency of alerts fired and overridden.

CONCLUSIONS

Utilization of a passive CDS positively influences prescribing patterns for older adults and reduces the alert burden to ordering providers.

Occurrence and predictors of delirium in critically ill older patients: a prospective cohort study

Objectives

This study aims to analyze the occurrence of delirium in critically ill older patients and to identify predictors of delirium.

Methods

This prospective study included critically ill older patients admitted into level II units of Intensive Care Medicine Department of a University Hospital. Patients with Glasgow Coma Scale score ≤11, traumatic brain injury, terminal disease, history of psychosis, blindness/deafness, or inability to understanding/speaking Portuguese were excluded. The Confusion Assessment Method-Short Form (CAM-4) was used to assess the presence of delirium.

Results

The final sample (n = 105) had a median age of 80 years, most being female (56.2%), widowed (49.5%), and with complete primary education (53%). Through CAM-4, 36.2% of the patients had delirium. The delirium group was more likely to have previous cognitive decline (48.6% vs 19.6%, P = .04) and severe dependency in instrumental activities of daily living (34.3% vs 14.8%, P = .032), comparing with patients without delirium. The final multiple logistic regression model explained that patients with previous cognitive decline presented a higher risk for delirium (odds ratio: 4.663, 95% confidence Interval: 1.055-20.599, P = .042).

Conclusions

These findings corroborate previous studies, showing that cognitive decline is an independent predictor for delirium in older patients. This study is an important contribution for the knowledge regarding the predictors of delirium. The recognition of these factors will help to identify patients who are at high risk for this syndrome and implement early screening and prevention strategies. However, further studies with larger samples, recruited from other clinical settings as well as analyzing other potential factors for delirium, will be needed.

Benzodiazepines and postoperative delirium: should we be as cautious as we are?

A recent systematic review and meta-analysis by Wang and colleagues in the British Journal of Anaesthesia calls into question the concept that perioperative benzodiazepine administration is associated with development of postoperative delirium in older individuals after anaesthesia and surgery. This editorial focuses on potential bias within the systematic review and addresses major concerns surrounding benzodiazepine use in the older perioperative population.

Prevalence of delirium in gastroenterology/hepatology units: A cross-sectional study

Prevalence rates of delirium amount to 22.0% within acute-care settings. In contrast, 30-40% of patients with liver cirrhosis may develop hepatic encephalopathy, a condition that has been classified as a syndrome of delirium, based on recent pathophysiology findings. However, the prevalence of delirium in gastroenterology and hepatology units is unknown.The aims of the study were (i) to identify delirium prevalence rates in inpatients of gastroenterology/hepatology wards, (ii) to analyze the delirium motor subtype, and (iii) to assess associations between delirium and patient characteristics.In this monocentric, cross-sectional, epidemiological study, point prevalence was assessed at six time points in three gastroenterology/hepatology units within a German university hospital. Delirium was assessed using the 4 'As' Test (4AT) and delirium subtype by the delirium motor subtype scale. Patient characteristics were collected from patient charts.The sample consisted of 188 patients, aged 18 to 98 years (mean age 64, n=110 male). Of them, 18.1% of patients showed delirium symptoms (61.8% hypoactive, 29.4% mixed, and 8.8% hyperactive). For the participants aged ≥65 years (n=96), prevalence of delirium amounted to 26.0%. Significant associations were observed between delirium and the following characteristics: age (p=0.001), length of hospital stay until assessment (p=0.043), cerebrovascular disease (p=0.002), dementia (p=0.010), diabetes mellitus with chronic complications (p=0.012), and gender (nonsignificant trend, p=0.050), while no association was detected between moderate or severe liver disease and delirium (p=0.414).In conclusion, overall prevalence rates of delirium were rather low and did not increase in patients with liver disease.

Delirium education and post-anaesthetics care unit nurses' knowledge on recognising and managing delirium in older patients

BACKGROUND

Postoperative delirium (POD) is a major complication following a surgical procedure. There is evidence that improving knowledge about POD could enhance POD care and patient outcomes.

AIM

The study aimed to evaluate whether the amount of delirium education among registered nurses working in post-anaesthetics care units (PACU) impacts on their self-reported confidence and competence in recognising and managing delirium as well as prior knowledge on factors that influence the risk of delirium onset for older people.

METHOD

The current study utilised an online survey on delirium care practice among registered nurses in PACUs. The survey consisted of 27 items. There were questions about confidence and competence in delirium care, knowledge about delirium risk factors, and ranked responses to two case scenario questions to evaluate the application of POD care. There were also demographic questions, including previous experience with delirium care education.

RESULTS

A total of 336 responses were generated from registered nurses working in PACU. Our findings found substantial variability among the respondents about their delirium care education. The amount of delirium education did not influence the PACU registered nurses' confidence or competence in delirium care. In addition, previous education did not have an impact on their knowledge about delirium risk factors.

DISCUSSION AND CONCLUSION

These findings suggested that the quantity of prior education about delirium did not improve the confidence, competence, knowledge, or case scenario questions of PACU registered nurses. Thus, delirium care education needs to be transformed to ensure it has a positive effect on delirium care clinical practice by registered nurses in PACU.

A Cross-Sectional, Retrospective, and Comparative Study between Delirium and Non-Delirium Psychiatric Disorders in a Psychogeriatric Inpatient Population Referred to Consultation-Liaison Psychiatry Unit

Background and objectives: Delirium is the most prevalent psychiatric disorder in inpatient older people. Its presence is associated with higher rates of institutionalization, functional disability and mortality. This study aims to evaluate delirium in a hospitalized psychogeriatric population, focusing on which factors predict the appearance of delirium, the impact it generates and the diagnostic concordance between non-psychiatric physicians and psychiatrists. Material and methods: This is an observational, cross-sectional, retrospective, and comparative study. We obtained data from a sample of 1017 patients (≥65 years) admitted to general hospital and referred from different services to the consultation-liaison psychiatry (CLP) unit. Logistic regression was performed using delirium as the dependent variable. To estimate the concordance of the diagnoses, the Kappa coefficient was used. To assess the impact of delirium, an ordinal regression, Wilcoxon median test and Fisher’s test were performed. Results: Delirium is associated with a higher number of visits, OR 3.04 (95% CI 2.38–3.88), longer length of stay and mortality, OR 2.07 (95% CI, 1.05 to 4.10). The model to predict delirium shows that being >75 years old has an OR of 2.1 (95% CI, 1.59–2.79), physical disability has an OR of 1.66 (95% CI, 1.25–2.20), history of delirium has an OR of 10.56 (95% CI, 5.26–21.18) and no use of benzodiazepines has an OR of 4.24 (95% CI, 2.92–6.14). The concordance between the referring physician’s psychiatric diagnosis and the psychiatrist CLP unit showed a kappa of 0.30. When analysing depression and delirium, the concordance showed Kappa = 0.46. Conclusions: Delirium is a highly prevalent psychiatric disorder, but it is still underdiagnosed, with low diagnostic concordance between non-psychiatric doctors and psychiatrists from CLP units. There are multiple risk factors associated with the appearance of delirium, which must be managed to reduce its appearance.

Delirium in the intensive care unit and its importance in the post-operative context: A review

The burden of delirium in the intensive care setting is a global priority. Delirium affects up to 80% of patients in intensive care units; an episode of delirium is often distressing to patients and their families, and delirium in patients within, or outside of, the intensive care unit (ICU) setting is associated with poor outcomes. In the short term, such poor outcomes include longer stay in intensive care, longer hospital stay, increased risk of other hospital-acquired complications, and increased risk of hospital mortality. Longer term sequelae include cognitive impairment and functional dependency. While medical category of admission may be a risk factor for poor outcomes in critical care populations, outcomes for surgical ICU admissions are also poor, with dependency at hospital discharge exceeding 30% and increased risk of in-hospital mortality, particularly in vulnerable groups, with high-risk procedures, and resource-scarce settings. A practical approach to delirium prevention and management in the ICU setting is likely to require a multi-faceted approach. Given the good evidence for the prevention of delirium among older post-operative outside of the intensive care setting, simple non-pharmacological interventions should be effective among older adults post-operatively who are cared for in the intensive care setting. In response to this, the future ICU environment will have a range of organizational and distinct environmental characteristics that are directly targeted at preventing delirium.

Investigating nurses' knowledge and attitudes about delirium in older persons: a cross-sectional study

INTRODUCTION

Delirium is the most common emergency for older hospitalized patients that demands urgent treatment, otherwise it can lead to more severe health conditions. Nurses play a crucial part in diagnosing delirium and their competencies facilitate the appropriate treatment and management of the condition.

AIM

This study aims to enhance the understanding of delirium care by exploring both knowledge and attitudes of nurses toward patients in acute care hospital wards and the possible association between these two variables.

METHOD

The Nurses Knowledge of Delirium Questionnaire (NKD) and the Attitude Tool of Delirium (ATOD) that were created for the said inquiry, were disseminated to 835 nurses in the four largest Public Hospitals of the Republic. These tools focused particularly on departments with increased frequency of delirium (response rate = 67%).

RESULTS

Overall nurses have limited knowledge of acute confusion/delirium. The average of correct answers was 42.2%. Only 38% of the participants reported a correct definition of delirium, 41.6 correctly reported the tools to identify delirium and 42.5 answered correctly on the factors leading to delirium development. The results of the attitudes' questionnaire confirmed that attitudes towards patients with delirium may not be supportive enough. A correlation between the level of nurses' knowledge and their attitude was also found. The main factors influencing the level of knowledge and attitudes were gender, education, and workplace.

CONCLUSION

The findings of this study are useful for the international audience since they can be used to develop and modify educational programmes in order to rectify the knowledge deficits and uninformed attitudes towards patients with delirium. The development of a valid and reliable instrument for the evaluation of attitudes will help to further assess nurses' attitudes. Furthermore, the results are even more important and useful on a national level since there is no prior data on the subject area, making this study the first of its kind.

Post-operative delirium in the patient with hip fracture: The journey from hospital arrival to discharge

Delirium- an acute disorder of attention and cognition- is the commonest complication following hip fracture. Patients with hip fracture are particularly vulnerable to delirium, and many of the lessons from the care of the patient with hip fracture will extend to other surgical cohorts. Prevention and management of delirium for patients presenting with hip fracture, extending along a continuum from arrival through to the post-operative setting. Best practice guidelines emphasize multidisciplinary care including management by an orthogeriatric service, regular delirium screening, and multimodal interventions. The evidence base for prevention is strongest in terms of multifaceted interventions, while once delirium has set in, early recognition and identification of the cause are key. Integration of effective strategies is often suboptimal, and may be supported by approaches such as interactive teaching methodologies, routine feedback, and clear protocol dissemination. Partnering with patients and carers will support person centered care, improve patient experiences, and may improve outcomes. Ongoing work needs to focus on implementing recognized best practice, in order to minimize the health, social and economic costs of delirium.

Identifying Medicare Beneficiaries With Delirium

BACKGROUND

Each year, thousands of older adults develop delirium, a serious, preventable condition. At present, there is no well-validated method to identify patients with delirium when using Medicare claims data or other large datasets. We developed and assessed the performance of classification algorithms based on longitudinal Medicare administrative data that included International Classification of Diseases, 10th Edition diagnostic codes.

METHODS

Using a linked electronic health record (EHR)-Medicare claims dataset, 2 neurologists and 2 psychiatrists performed a standardized review of EHR records between 2016 and 2018 for a stratified random sample of 1002 patients among 40,690 eligible subjects. Reviewers adjudicated delirium status (reference standard) during this 3-year window using a structured protocol. We calculated the probability that each patient had delirium as a function of classification algorithms based on longitudinal Medicare claims data. We compared the performance of various algorithms against the reference standard, computing calibration-in-the-large, calibration slope, and the area-under-receiver-operating-curve using 10-fold cross-validation (CV).

RESULTS

Beneficiaries had a mean age of 75 years, were predominately female (59%), and non-Hispanic Whites (93%); a review of the EHR indicated that 6% of patients had delirium during the 3 years. Although several classification algorithms performed well, a relatively simple model containing counts of delirium-related diagnoses combined with patient age, dementia status, and receipt of antipsychotic medications had the best overall performance [CV- calibration-in-the-large <0.001, CV-slope 0.94, and CV-area under the receiver operating characteristic curve (0.88 95% confidence interval: 0.84-0.91)].

CONCLUSIONS

A delirium classification model using Medicare administrative data and International Classification of Diseases, 10th Edition diagnosis codes can identify beneficiaries with delirium in large datasets.

A quality improvement project addressing the underreporting of delirium in hip fracture patients

INTRODUCTION

After discovering a low incidence of delirium for hip fracture patients at our institution, we evaluated if this was due to underreporting and, if so, where process errors occurred.

METHODS

Hip fracture patients aged ≥60 with a diagnosis of delirium were identified. Chart-Based Delirium Identification Instrument (CHART-DEL) identified missed diagnoses of delirium. Process maps were created based off staff interviews and observations.

RESULTS

The incidence of delirium was 15.3% (N = 176). Within a random sample (n = 98), 15 patients (15.5%) were diagnosed, while 20 (24.7%) went undiagnosed despite evidence of delirium. Including missed diagnoses, delirium prevalence was higher in the sample compared to all patients (35.7% vs 15.3%, p < 0.001). Most missed diagnoses were due to failure in identifying delirium (60%) or failure in documenting/coding diagnosis (20%). The prevalence of baseline cognitive impairment was higher in undiagnosed delirium patients versus correctly diagnosed patients (80% vs 20%, p = 0.001).

CONCLUSIONS

Our institution significantly underreports delirium among hip fracture patients mainly due to; (1) failure to identify delirium by the clinical staff, and (2) failure to document/code diagnosis despite correct identification. Baseline cognitive impairment can render delirium diagnosis challenging. These serve as targets for quality improvement and hip fracture care enhancement.

A systematic review of modified electroconvulsive therapy (ECT) to treat delirium

BACKGROUND

Delirium is costly for patients, carers, and healthcare systems. In addition, non-pharmacological and pharmacological management of delirium is challenging. Electroconvulsive therapy (ECT) has been proposed and used as an anecdotal treatment of delirium in clinical practice. However, the efficacy and safety of this approach are not well understood.

OBJECTIVE

To synthesise and review the evidence relating to the safety and efficacy of ECT as a treatment for delirium.

METHODS

A systematic review was completed according to PRISMA guidelines using the PubMed, CINAHL, Cochrane Library, and PsycINFO databases. Studies were eligible for inclusion if modified ECT was used to treat delirium symptoms. ECT for delirium in people with neuroleptic malignant syndrome, catatonia, or confusional states associated with acute primary psychiatric conditions were excluded. All included records were first ranked using the hierarchy of evidence-based medicine; quality was then assessed using the Joanna Briggs critical appraisal checklists. Pooled data across the cases identified were analysed using descriptive statistics.

RESULTS

Of 1226 records screened, 10 studies met inclusion criteria: six case reports, three case series, and one quasi-experimental study. The literature base was of mixed quality. A single quasi-experimental study was assessed to be of 'fair' quality, the remainder of the case series and case reports were rated as 'poor' to 'fair' quality. A total of only 40 individual people with delirium who were treated with ECT were identified. In 33/40 cases, the aetiology of delirium was substance withdrawal. The number of ECT treatments administered ranged from 1 to 13. ECT was reported to positively contribute towards treatment of delirium in all cases, although objective measures of improvement were reported in only 6/13 patient cases from case reports and case series (46%). The singular quasi-experimental study reported a statistically significant decrease in duration of delirium, time spent in physical restraint, and in benzodiazepine requirement when ECT was used as an adjunct in benzodiazepine withdrawal delirium. When adverse events were described these included mild confusion and memory deficits; all were reported as time limited and reversible. Considerable limitations in the quality of the evidence base were identified, including the risk of selection, publication and reporting bias. Much data reporting on safety and efficacy of ECT in delirium was missing.

CONCLUSION

There is insufficient literature to support modified ECT as a clinical treatment for delirium. The few studies identified were generally of weak evidence lacking important data on safety and objective outcome measures, and not including populations with broad delirium aetiologies. Further research using more robust methodologies and broader populations (age, aetiology) of people with delirium treated with ECT is needed.

Proposing a Scientific and Technological Approach to the Summaries of Clinical Issues of Inpatient Elderly with Delirium: A Viewpoint

Background/rationale: Despite mounting evidence about delirium, this complex geriatric syndrome is still not well managed in clinical contexts. The aging population creates a very demanding area for innovation and technology in healthcare. For instance, an outline of an aging-friendly healthcare environment and clear guidance for technology-supported improvements for people at delirium risk are lacking. Objective: We aimed to foster debate about the importance of technical support in optimizing healthcare professional practice and improving the outcomes for inpatients’ at delirium risk. We focused on critical clinical points in the field of delirium worthy of being addressed by a multidisciplinary approach. Methods: Starting from a consensus workshop sponsored by the Management Perfectioning Course based at the Marco Biagi Foundation (Modena, Italy) about clinical issues related to delirium management still not addressed in our healthcare organizations, we developed a requirements’ analysis among the representatives of different disciplines and tried to formulate how technology could support the summaries of the clinical issues. We analyzed the national and international panorama by a PubMed consultation of articles with the following keywords in advanced research: “delirium”, “delirium management”, “technology in healthcare”, and “elderly population”. Results: Despite international recommendations, delirium remains underdiagnosed, underdetected, underreported, and mismanaged in the acute hospital, increasing healthcare costs, healthcare professionals’ job distress, and poor clinical outcomes. Discussion: Although all healthcare professionals recognize delirium as a severe and potentially preventable source of morbidity and mortality for hospitalized older people, it receives insufficient attention in resource allocation and multidisciplinary research. We synthesized how tech-based tools could offer potential solutions to the critical clinical points in delirium management.

Can Variables From the Electronic Health Record Identify Delirium at Bedside?

Delirium, a common and serious disorder in older hospitalized patients, remains underrecognized. While several delirium predictive models have been developed, only a handful have focused on electronic health record (EHR) data. This prospective cohort study of older inpatients (≥65 years old) aimed to determine if variables within our health system's EHR could be used to identify delirium among hospitalized patients at the bedside. Trained researchers screened daily for delirium using the 3-minute diagnostic Confusion Assessment Method (3D-CAM). Patient demographic and clinical variables were extracted from the EHR. Among 408 participants, mean age was 75 years, 60.8% were female, and 82.6% were Black. Overall rate of delirium was 16.7%. Patients with delirium were older and more likely to have an infection diagnosis, prior dementia, higher Charlson comorbidity severity of illness score, lower Braden Scale score, and higher Morse Fall Scale score in the EHR (P<0.01 for all). On multivariable analysis, a prior diagnosis of dementia (odds ratio: 5.0, 95% CI: 2.5-10.3) and a Braden score of <18 (odds ratio: 2.8, 95% CI: 1.5-5.1) remained significantly associated with delirium among hospitalized patients. Further research in the development of an automated delirium prediction model is needed.

Cost-effectiveness of clinical interventions for delirium: A systematic literature review of economic evaluations

OBJECTIVE

Little is known about the economic value of clinical interventions for delirium. This review aims to synthesise and appraise available economic evidence, including resource use, costs, and cost-effectiveness of interventions for reducing, preventing, and treating delirium.

METHODS

Systematic review of published and grey literature on full and partial economic evaluations. Study quality was assessed using the Consolidated Health Economic Evaluation Reporting Standards (CHEERS).

RESULTS

Fourteen economic evaluations (43% full, 57% partial) across nine multicomponent and nonpharmacological intervention types met inclusion criteria. The intervention costs ranged between US$386 and $553 per person in inpatient settings. Multicomponent delirium prevention intervention and the Hospital Elder Life Program (HELP) reported statistically significant cost savings or cost offsets somewhere else in the health system. Cost savings related to inpatient, outpatient, and out-of-pocket costs ranged between $194 and $6022 per person. The average CHEERS score was 74% (±SD 10%).

CONCLUSION

Evidence on a joint distribution of costs and outcomes of delirium interventions was limited, varied and of generally low quality. Directed expansion of health economics towards the evaluation of delirium care is necessary to ensure effective implementation that meets patients' needs and is cost-effective in achieving similar or better outcomes for the same or lower cost.

Comprehensive geriatric assessment in older people: an umbrella review of health outcomes

BACKGROUND

Comprehensive geriatric assessment (CGA) has been in use for the last three decades. However, some doubts remain regarding its clinical use. Therefore, we aimed to capture the breadth of outcomes reported and assess the strength of evidence of the use of comprehensive geriatric assessment (CGA) for health outcomes in older persons.

METHODS

Umbrella review of systematic reviews of the use of CGA in older adults searching in Pubmed, Embase, Scopus, Cochrane library and CINHAL until 05 November 2021. All possible health outcomes were eligible. Two independent reviewers extracted key data. The grading of evidence was carried out using the GRADE for intervention studies, whilst data regarding systematic reviews were reported as narrative findings.

RESULTS

Among 1,683 papers, 31 systematic reviews (19 with meta-analysis) were considered, including 279,744 subjects. Overall, 13/53 outcomes were statistically significant (P < 0.05). There was high certainty of evidence that CGA reduces nursing home admission (risk ratio [RR] = 0.86; 95% confidence interval [CI]: 0.75-0.89), risk of falls (RR = 0.51; 95%CI: 0.29-0.89), and pressure sores (RR = 0.46; 95%CI: 0.24-0.89) in hospital medical setting; decreases the risk of delirium (OR = 0.71; 95%CI: 0.54-0.92) in hip fracture; decreases the risk of physical frailty in community-dwelling older adults (RR = 0.77; 95%CI: 0.64-0.93). Systematic reviews without meta-analysis indicate that CGA improves clinical outcomes in oncology, haematology, and in emergency department.

CONCLUSIONS

CGA seems to be beneficial in the hospital medical setting for multiple health outcomes, with a high certainty of evidence. The evidence of benefits is less strong for the use of CGA in other settings.

The neuropsychological profile of delirium vulnerability: A systematic review and meta-analysis

Delirium is a common neurocognitive disorder in hospitalised older adults with substantial negative consequences. Impaired global cognition is a well-established delirium risk factor. However, poor performance on attention tests and higher intra-subject variability may be more sensitive delirium risk factors, given the disorder is characterised by a fluctuating course and attentional deficits. We systematically searched databases (Embase, PsycINFO, MEDLINE) and 44 studies satisfied inclusion criteria. Random-effects meta-analysis models showed poor performance in all cognitive domains except perception was significantly associated with incident delirium. Largest effects were for orientation (g=-1.20) and construction and motor performance (g=-0.60). These effects were no longer significant in the subgroup without pre-existing cognitive impairment, where executive functions and verbal functions and language skills were associated with incident delirium. A small, non-significant association between intra-subject variability and incident delirium was found (g=0.42). Cognitive domain specific tests may be quicker and more sensitive predictors of incident delirium. This pattern of neuropsychological findings supports the proposition that vulnerability for delirium manifests as a dysfunction of whole-brain information integration.

A complex intervention to promote prevention of delirium in older adults by targeting caregiver's participation during and after hospital discharge - study protocol of the TRAnsport and DElirium in older people (TRADE) project

Background

Among potentially modifiable risk factors for delirium, transfers between wards, hospitals and other facilities have been mentioned with low evidence. TRADE (TRAnsport and DElirium in older people) was set up to investigate i) the impact of transfer and/or discharge on the onset of delirium in older adults and ii) feasibility and acceptance of a developed complex intervention targeting caregiver’s participation during and after hospital discharge or transfer on cognition and the onset of delirium in older adults.

Methods

The study is designed according to the guidelines of the UK Medical Research Council (MRC) for development and evaluation of complex interventions and comprises two steps: development and feasibility/piloting. The development phase includes i) a multicenter observational prospective cohort study to assess delirium incidence and cognitive decline associated with transfer and discharge, ii) a systematic review of the literature, iii) stakeholder focus group interviews and iv) an expert workshop followed by a Delphi survey. Based on this information, a complex intervention to better and systematically involve family caregivers in discharge and transport was developed. The intervention will be tested in a pilot study using a stepped wedge design with a detailed process and health economic evaluation. The study is conducted at four acute care hospitals in southwest Germany. Primary endpoints are the delirium incidence and cognitive function. Secondary endpoints include prevalence of caregiver companionship, functional decline, cost and cost effectiveness, quality of discharge management and quality of admission management in admitting hospitals or nursing homes. Data will be collected prior to discharge as well as after 3, 7 and 90 days.

Discussion

TRADE will help to evaluate transfer and discharge as a possible risk factor for delirium. In addition, TRADE evaluates the impact and modifiability of caregiver’s participation during patient’s transfer or discharge on delirium incidence and cognitive decline providing the foundation for a confirmatory implementation study.

Trial registration

DRKS (Deutsches Register für klinische Studien) DRKS00017828. Registered on 17th September 2019. Retrospectively registered.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12877-021-02585-0.

Hospital Admission to a Window-Side Bed Does Not Prevent Delirium: A Retrospective Cohort Study of Older Medical Inpatients in General Wards

Background: Delirium in older inpatients is a serious problem. The presence of a window in the intensive care unit has been reported to improve delirium. However, no study has investigated whether window-side bed placement is also effective for delirium prevention in a general ward. Objectives: This study aims to clarify the association between admission to a window-side bed and delirium development in older patients in a general ward. Design: This research is designed as a retrospective cohort study of older patients admitted to the internal medicine departments of Shinshu University Hospital, Japan. Participants: The inclusion criteria were the following: (1) admitted to hospital internal medicine departments between April 2009 and December 2018, (2) older than 75 years, (3) admitted to a multi-patient room in a general ward, and (4) unplanned admission. The number of eligible patients was 1,556. Exposure: This study is a comparison of 495 patients assigned to a window-side bed (window group) with 1,061 patients assigned to a non-window-side bed (non-window group). When patients were transferred to the other type bed after admission, observation was censored. Main Measures: The main outcome of interest was "delirium with event" (e.g., the use of medication or physical restraint for delirium) within 14 days after admission as surveyed by medical chart review in a blinded manner. Key Results: The patients had a median age of 80 years and 38.1% were female. The main outcome was recorded in 36 patients in the window group (10.7 per thousand person-days) and 84 in the non-window group (11.7 per thousand person-days). Log-rank testing showed no significant difference between the groups (p = 0.78). Multivariate analysis with Cox regression modeling also revealed no significant association for the window group with main outcome development (adjusted hazard ratio 0.90, 95% confidence interval of 0.61-1.34). Conclusions: Admission to a window-side bed did not prevent delirium development in older patients admitted to a general ward.

Predictors of Caregiver Burden in Delirium: Patient and Caregiver Factors

The current study examined the association of patient factors, patient/caregiver relationships, and living arrangements with caregiver burden due to delirium. The sample included a subset (N = 207) of hospitalized medical and surgical patients (aged >70 years) enrolled in the Better Assessment of Illness Study and their care-givers. The majority of caregivers were female (57%) and married (43%), and 47% reported living with the patient. Delirium occurred in 22% of the sample, and delirium severity, pre-existing cognitive impairment, and impairment of any activities of daily living (ADL) were associated with higher caregiver burden. However, only the ADL impairment of needing assistance with transfers was independently significantly associated with higher burden (p < 0.01). Child, child-in-law, and other relatives living with or apart from the patient reported significantly higher caregiver burden compared to spouse/partners (p < 0.01), indicating caregiver relationship and living arrangement are associated with burden. Future studies should examine additional factors contributing to delirium burden. [Journal of Gerontological Nursing, 47(9), 32-39.].

Preventing Delirium and Promoting Long-Term Brain Health: A Clinical Trial Design for the Perioperative Cognitive Enhancement (PROTECT) Trial

BACKGROUND

Perioperative neurocognitive disorders (PND), including postoperative delirium (POD), are common in older adults and, for many, precipitate functional decline and/or dementia.

OBJECTIVE

In this protocol, we describe a novel multidisciplinary, multicomponent perioperative intervention that seeks to prevent or reduce POD and associated cognitive decline.

METHODS

We will conduct a prospective, single-blind, pragmatic, randomized-controlled trial to compare our tailored multi-disciplinary perioperative pathway against current standard of care practices. We will recruit a total of 692 elective surgical patients aged 65 years or more and randomize them in a 1:1 design. Our perioperative intervention targets delirium risk reduction strategies by emphasizing the importance of early mobilization, nutrition, hydration, cognitive orientation, sensory aids, and avoiding polypharmacy. To promote healthy behavior change, we will provide a tailored psychoeducation program both pre- and postoperatively, focusing on cardiovascular and psychosocial risks for cognitive and functional decline.

RESULTS

Our primary outcome is the incidence of any PND (encapsulating POD and mild or major postoperative neurocognitive disorder) at three months postoperative. Secondary outcomes include any incidence of POD or neurocognitive disorder at 12 months. A specialized delirium screening instrument, the Confusion Assessment Method (3D-CAM), and a neuropsychological test battery, will inform our primary and secondary outcomes.

CONCLUSION

Delirium is a common and debilitating postoperative complication that contributes to the cognitive and functional decline of older adults. By adopting a multicomponent, multidisciplinary approach to perioperative delirium prevention, we seek to reduce the burden of delirium and subsequent dementia in older adults.

Early Recognition of Preventable Factors Associated with Delirium Saves Lives and Costs

Delirium is a complex diagnosis characterized by inattention accompanied by either disorganized thinking or an altered level of consciousness. Delirium affects approximately 15% of older adults in the hospital. Delirium is associated with a 62% greater risk of mortality within 1 year of discharge and a significant increase in health care costs. Although the Diagnostic and Statistical Manual of Mental Health-5 has defined delirium, its characteristics, and has recommended diagnostic tools, one of the greatest challenges has been instituting timely and effective treatments. Effective management of delirium includes nonpharmacologic and pharmacologic interventions simultaneously instituted to control agitation while exploring causation.

Patients' experiences of delirium: A systematic review and meta-summary of qualitative research

AIMS

The purpose of this systematic review and meta-summary was the aggregation of the empirical qualitative literature on patients' experiences of delirium in order to support the development and implementation of patient-oriented delirium management and to guide future research.

DESIGN

We conducted a systematic literature review of qualitative research published between January 1980 and June 2019.

DATA SOURCES

In June 2019, we searched in Medline, CINAHL, SSCI and PsycInfo to identify relevant reports. In addition, we conducted searches in three dissertation databases (BASE, DART and ProQuest) and Google Scholar.

REVIEW METHODS

We used methods developed by Sandelowski and Barroso to construct a meta-summary of the findings by extracting them from the reports, abstracting them into meta- findings and calculating their manifest interstudy frequency effect sizes.

RESULTS

Out of the 742 identified records, 24 reports based on delirium experience accounts of 483 patients met our criteria and were included. One thousand ninety-seven findings were extracted from these reports and abstracted into 92 meta-findings. These were grouped to the five emerging themes 'perception', 'emotions', 'interaction with others', 'dealing with delirium' and 'influence on further life'.

CONCLUSION

Delirium is commonly perceived as an overall distressing condition, which can accompany and influence patients even after hospital discharge.

IMPACT

This systematic review and meta-summary is the most comprehensive aggregation of qualitative research of the patient delirium experience to date. It allows us to better understand, extract meaning from, and weigh the qualitative findings in their context by calculating their manifest frequency effect sizes. This can be used to support the development and implementation of delirium management concepts.

One-Year Medicare Costs Associated With Delirium in Older Patients Undergoing Major Elective Surgery

Importance

Delirium is a common, serious, and potentially preventable problem for older adults, associated with adverse outcomes. Coupled with its preventable nature, these adverse sequelae make delirium a significant public health concern; understanding its economic costs is important for policy makers and health care leaders to prioritize care.

Objective

To evaluate current 1-year health care costs attributable to postoperative delirium in older patients undergoing elective surgery.

Design, Setting, and Participants

This prospective cohort study included 497 patients from the Successful Aging after Elective Surgery (SAGES) study, an ongoing cohort study of older adults undergoing major elective surgery. Patients were enrolled from June 18, 2010, to August 8, 2013. Eligible patients were 70 years or older, English-speaking, able to communicate verbally, and scheduled to undergo major surgery at 1 of 2 Harvard-affiliated hospitals with an anticipated length of stay of at least 3 days. Eligible surgical procedures included total hip or knee replacement; lumbar, cervical, or sacral laminectomy; lower extremity arterial bypass surgery; open abdominal aortic aneurysm repair; and open or laparoscopic colectomy. Data were analyzed from October 15, 2019, to September 15, 2020.

Exposures

Major elective surgery and hospitalization.

Main Outcomes and Measures

Cumulative and period-specific costs (index hospitalization, 30-day, 90-day, and 1-year follow-up) were examined using Medicare claims and extensive clinical data. Total inflation-adjusted health care costs were determined using data from Medicare administrative claims files for the 2010 to 2014 period. Delirium was rated using the Confusion Assessment Method. We also examined whether increasing delirium severity was associated with higher cumulative and period-specific costs. Delirium severity was measured with the Confusion Assessment Method-Severity long form. Regression models were used to determine costs associated with delirium after adjusting for patient demographic and clinical characteristics.

Results

Of the 566 patients who were eligible for the study, a total of 497 patients (mean [SD] age, 76.8 [5.1] years; 281 women [57%]; 461 White participants [93%]) were enrolled after exclusion criteria were applied. During the index hospitalization, 122 patients (25%) developed postoperative delirium, whereas 375 (75%) did not. Patients with delirium had significantly higher unadjusted health care costs than patients without delirium (mean [SD] cost, $146 358 [$140 469] vs $94 609 [$80 648]). After adjusting for relevant confounders, the cumulative health care costs attributable to delirium were $44 291 (95% CI, $34 554-$56 673) per patient per year, with the majority of costs coming from the first 90 days: index hospitalization ($20 327), subsequent rehospitalizations ($27 797), and postacute rehabilitation stays ($2803). Health care costs increased directly and significantly with level of delirium severity (none-mild, $83 534; moderate, $99 756; severe, $140 008), suggesting an exposure-response relationship. The adjusted mean cumulative costs attributable to severe delirium were $56 474 (95% CI, $40 927-$77 440) per patient per year. Extrapolating nationally, the health care costs attributable to postoperative delirium were estimated at $32.9 billion (95% CI, $25.7 billion-$42.2 billion) per year.

Conclusions and Relevance

These findings suggest that the economic outcomes of delirium and severe delirium after elective surgery are substantial, rivaling costs associated with cardiovascular disease and diabetes. These results highlight the need for policy imperatives to address delirium as a large-scale public health issue.

The economic cost of delirium: A systematic review and quality assessment

INTRODUCTION

This review aims to systematically identify and appraise the methodological quality of claims on the cost of delirium; and discuss challenges and opportunities for improvements in the precision of the estimates.

METHODS

Searches of scientific papers and gray literature were performed up until June 2020. The Larg and Moss checklist was used to assess the methodological quality of the included studies.

RESULTS

After deduplication, the search identified 317 potentially relevant articles, of which 17 articles were eligible for inclusion. After adjusting for inflation and common currency, the cost of delirium ranged between $806 and $24,509 (in 2019 US$).

DISCUSSION

This review found significant variation among the cost estimates and methodological quality. There has been limited focus on dementia as a sequela of delirium in terms of economic implications, but recent evidence suggests cost implications of delirium may be 52% higher when dementia is considered.

Clinical characteristics and treatment of delirium in palliative care settings

Delirium is commonly seen in palliative care. It usually develops over a short period of time and is characterized by a disturbance of attention and awareness. As delirium is associated with increased mortality, prevention and early identification of this severe neurocognitive disorder is of high clinical relevance. This paper provides a brief overview of risk factors, preventive measures, current screening and diagnostic procedures, as well as nonpharmacological and pharmacological treatment options of delirium in the palliative care setting.