A multicomponent intervention to prevent delirium in hospitalized older patients

Advances in research on the pathogenesis and signaling pathways associated with postoperative delirium (Review)

Postoperative delirium (POD) is a common postoperative complication, characterized by acute, transient and fluctuating declines in consciousness and attention, with an incidence that increases with age. POD is associated with various adverse postoperative outcomes, including prolonged hospital stays, higher medical costs and increased morbidity and mortality rates. Moreover, it has been suggested that POD, as an early manifestation of postoperative cognitive impairment, may serve as a precursor to long‑term cognitive dysfunction. Given its considerable clinical impact, the prevention and management of POD are of critical importance. However, the mechanisms underlying POD remain insufficiently understood. Current hypotheses primarily implicate neuroinflammation, oxidative stress, neurotransmitter dysregulation and pathological protein changes, such as β‑amyloid deposition and tau hyperphosphorylation. Disruptions in the sleep‑wake cycle, electroencephalographic burst suppression, the microbiota‑gut‑brain axis, the olfactory‑brain axis and genetic susceptibility to delirium may also contribute to POD occurrence. Multiple signaling pathways are involved in POD, including the Wnt/β‑catenin, PI3K/AKT, brain‑derived neurotrophic factor/tropomyosin receptor kinase B, toll‑like receptor and NF‑κB pathways. These findings not only elucidate potential mechanisms but also highlight essential therapeutic targets and theoretical foundations for clinical management. However, due to the complexity and multifactorial nature of the pathogenesis of POD, no comprehensive or widely accepted clinical measures have yet been established for its prevention and treatment. Both non‑pharmacological and pharmacological interventions have a role in POD prevention and treatment. Non‑pharmacological strategies are currently prioritized, such as cognitive training, the Hospital Elder Life Program and comprehensive geriatric assessment. Pharmacological interventions include dexmedetomidine, melatonin and non‑steroidal anti‑inflammatory drugs, with intranasal insulin emerging as a promising preventive approach. Additionally, anesthesia management strategies, including depth of anesthesia monitoring, blood pressure regulation and multimodal postoperative analgesia, have also been recognized as effective measures for reducing the risk of POD. The present review provides a comprehensive overview of the pathogenesis of POD, relevant signaling pathways and available preventive and therapeutic strategies. By deepening the understanding of POD, the present review aims to offer practical guidance for clinicians in optimizing prevention and management approaches.

Contemporary Prevention and Management of Postoperative Delirium in Cardiac Surgery Patients

OBJECTIVE

This review examines the prevention and management of postoperative delirium in cardiac surgery patients, a frequent complication linked with significant mortality, morbidity, prolonged hospitalization, and cognitive decline. The aim was to consolidate current evidence on postoperative delirium pathophysiology, risk factors, diagnostic approaches, and pharmacologic and non-pharmacologic interventions.

METHODS

A PubMed/MEDLINE database review was conducted through October 2024, identifying studies that evaluated the relationship between cardiac surgery and the occurrence of postoperative delirium.

RESULTS

The pathogenesis of postoperative delirium is complex, involving neuroinflammation, neurotransmitter imbalance, and endothelial dysfunction, compounded by baseline vulnerabilities and perioperative stressors. Early screening using tools like the Confusion Assessment Method for the Intensive Care Unit (CAM-ICU) and Intensive Care Delirium Screening Checklist (ICDSC) aids in timely detection. Prevention emphasizes non-pharmacologic interventions, such as the Hospital Elder Life Program and the ABCDEF bundle, alongside pharmacologic strategies to minimize high-risk sedatives. Emerging technologies, including intraoperative neurophysiologic monitoring modalities and machine learning models, enhance postoperative delirium risk assessment and enable targeted interventions.

CONCLUSION

Effective postoperative delirium management in cardiac surgery requires a balanced approach incorporating non-pharmacologic and pharmacologic methods. Integration of evidence-based practices and innovative technologies into routine care holds promise for improving patient outcomes. Ongoing research is essential to optimize postoperative delirium management and standardize practices in high-risk populations.

Advanced Nursing Roles for People With Cognitive Impairment and Their Relatives in Acute Care Hospitals: A Systematic Review

AIM

To systematically review advanced nursing roles in caring for people with cognitive impairment and their relatives in acute care hospitals, focusing on describing roles and intervention components.

DESIGN

Systematic review.

METHODS

We included qualitative and quantitative studies on nurses in advanced roles caring for people with diagnosed or suspected cognitive impairment and their relatives, assessing outcomes at patient, staff and organisational levels. Nurses' advanced role profiles ranged from nurse-led interventions up to Advanced Practice Nurses. We employed the Mixed Methods Appraisal Tool for critical appraisal and conducted a synthesis without meta-analysis using a content analysis approach.

DATA SOURCES

MEDLINE, CINAHL, Cochrane Library, ALOIS, Web of Science and LIVIVO up to May 2024, along with forward and backward citation tracking.

RESULTS

We included 48 studies that described 39 distinct interventions. The majority of these studies employed a quasi-experimental design. Most interventions involved Advanced Practice Nurses (n = 23) and focused on people at risk of or experiencing delirium (n = 22). Nurses in advanced roles predominantly engaged in tasks related to direct clinical practice, as well as coaching and guidance for patients, relatives and colleagues. Their responsibilities also included leadership, collaboration and consultation on a regular basis. Activities related to research and ethical decision-making were infrequently reported.

CONCLUSION

Many areas of responsibility of nurses in advanced roles align with the needs of hospitalised people with cognitive impairment. Nurses in advanced roles increasingly take on diverse activities across all competence domains of Advanced Practice Nursing, with a focus on coaching and guidance, as well as clinical practice, while leadership, collaboration, research and ethical decision-making become more prominent as their formal training advances.

IMPLICATIONS FOR THE PROFESSION AND PATIENT CARE

Our comprehensive description of advanced nursing roles in the care of people with cognitive impairment provides a foundation for developing and refining such roles in hospitals.

REPORTING METHOD

We followed the PRISMA guideline and SWiM guideline for reporting.

PATIENT OR PUBLIC CONTRIBUTION

This study did not include patient or public involvement in its design, conduct or reporting.

TRIAL REGISTRATION

Prospero number: CRD42021265157.

Predicting delirium in acute ischemic stroke: the PREDELIS score

BACKGROUND

Delirium, defined as an acute, fluctuating disturbance in consciousness, attention and cognition, is a common stroke complication and associated with poor functional outcome. Although resource-intensive prevention strategies could reduce delirium rates, their implementation in unselected stroke patients is challenging. This study aimed to develop a risk score for predicting delirium in acute ischemic stroke (PREDELIS).

METHODS

We retrospectively included all ischemic stroke patients admitted to five stroke units of Styria, Austria, between 2013 and 2021. Data were retrieved from a comprehensive medical information system using semi-automated data extraction. The PREDELIS score was based on multivariable logistic regression analysis to identify admission variables associated with delirium.

RESULTS

14,475 acute ischemic stroke patients (median age: 76 years, 46% women) were split in a 40% derivation (n = 6151; delirium = 398, 6.5%) and a 60% validation cohort (n = 8324; delirium: 568, 6.8%). Previous delirium (4 points), chronic alcohol consumption (3), age > 70 years (2), male sex (2), infection (2), admission NIHSS > 7 (1), non-lacunar stroke (1) and vision/hearing impairment (1) were associated with delirium (all p < 0.05) and included in our score (median: 5 points). The score´s area under the curve was 0.72 in both the derivation (95% CI 0.69-0.75) and the validation cohort (95% CI 0.70-0.74). While patients with a score of ≤ 5 had a low delirium risk (2.5%), a score of ≥ 9 indicated a high risk (30.9%).

DISCUSSION AND CONCLUSION

This study introduces a novel score for early delirium risk estimation in ischemic stroke patients, aiding clinicians in identifying high-risk individuals for targeted screening and prevention.

Boarding in the Emergency Department: Specific Harms to Older Adults and Strategies for Risk Mitigation

Emergency department (ED) boarding, which refers to holding patients in the ED for prolonged periods while awaiting an inpatient bed, is linked to patient harm and is associated with worsening ED crowding. Evidence suggests that older patients are at increased risk of complications from boarding, including the development of delirium. By prioritizing the admission of at-risk older patients to inpatient beds, ED may improve the both the quality of care for these patients and reduce inpatient lengths of stay. Older patients who must board in the ED may benefit from targeted interventions to help mitigate risks from ED boarding.

Lipid dysregulation and delirium in older adults: A review of the current evidence and future directions

Delirium is a complex medical condition marked by acute episodes of cognitive dysfunction and behavioral disturbances, with a multifaceted etiology and challenging management across various clinical settings. Older adults, particularly in postoperative contexts, are at increased risk of developing delirium. Despite extensive research, a single underlying pathophysiological mechanism for delirium remains elusive. However, emerging evidence suggests a correlation between lipid dysregulation and delirium development in elderly patients, especially in postoperative settings. This connection has led to proposed treatments targeting dyslipidemia and associated neuroinflammatory effects in acute-phase delirium. This review aims to synthesize current literature on the relationship between lipid dysregulation and delirium in older adults, highlighting the need for further research into specific neurolipidome constituents and age-related lipid profile changes, potentially uncovering novel therapeutic strategies for delirium.

[Diagnosis and management of delirium in older adults]

Delirium, also known as acute confusional state, is an acute brain disorder characterized by cognitive disturbances, particularly attentional deficits, potential behavioral changes, and altered vigilance, with a sudden onset and fluctuating course. It is a common condition among hospitalized older patients and has serious consequences for the patient, their family, and the healthcare system. It is considered an "acute brain failure" that often occurs in the context of underlying cognitive and cerebral vulnerability, similar to how acute kidney injury complicates chronic kidney disease or how acute heart failure exacerbates chronic heart failure - usually in the presence of a precipitating medical factor, often infectious, metabolic, perioperative, or neurological. This narrative review aims to describe the symptoms that allow the diagnosis of delirium in older adults, the available diagnostic or screening tools, as well as the complex and bidirectional relationships between delirium and dementia. The management of delirium, including non-pharmacological measures, will be discussed, along with symptomatic pharmacological treatments, which should be reserved for severe cases despite their low level of evidence.

Impact of Living Arrangements on Delirium in Older ED Patients

Background: The purpose of this study is to assess how the socio-family demographic status of patients is related to the onset of delirium in a large cohort of older adults aged ≥65 years evaluated in the emergency department (ED) using a comprehensive geriatric assessment (CGA). Methods: This is a cross-sectional, observational, retrospective study conducted in the ED of a teaching hospital. We enrolled 2770 geriatric patients admitted to the ED from January 2019 to December 2023 and evaluated them using CGA. Clinical variables assessed in the ED were evaluated for associations with delirium onset and in-hospital mortality. Results: Delirium was statistically related to frailty statuses as measured via the Clinical Frailty Scale (CFS) (OR 1.47 [1.39-1.56]; p < 0.001). The occurrence of delirium was also associated with living arrangements: "living with other relatives" condition (OR 1.43 [1.12-1.83]; p = 0.004) and residence in a nursing home (OR 1.72 [1.30-2.31]; p < 0.001). In addition, compared to patients in emergency conditions (NEWS > 5), it emerges that patients with better clinical stability have a lower risk of developing delirium (NEWS 3-5 OR 0.604 [0.48-0.75]; p < 0.001-NEWS < 3 OR 0.42 [0.34-0.53]; p < 0.001). In-hospital mortality was associated with age, male sex, frailty status, clinical instability, and the onset of delirium in the ED. Conclusions: Delirium is a multifactorial and acute syndrome representing a negative prognostic factor of in-hospital mortality, especially in elderly patients. Independent of the clinical condition, the patient's living arrangement could be of relevance to the onset of delirium in the ED. Early comprehensive geriatric assessments in the ED could allow the early detection of all predisposing risk factors, resulting in the timely implementation of supportive strategies to prevent the onset of delirium in EDs.

Associations between triglyceride-glucose indices and delirium risk in critically ill patients with acute kidney injury: a retrospective study

Background

Delirium frequently occurs in individuals with acute kidney injury (AKI), leading to serious adverse outcomes. However, there are currently no predictors of early intervention for delirium in clinical practice. This study aims to investigate whether a correlation exists between TyG indices and the clinical symptoms of delirium in patients with AKI.

Methods

Eligible participants diagnosed with AKI from the Medical Information Mart for Intensive Care-IV (MIMIC-IV) database were categorised based on their TyG index. The primary outcome of this study was the incidence of delirium. The TyG indices were quartile and Kaplan-Meier (K-M) cumulative curve was conducted to compare the consequence of each group. Cox proportional hazards and restricted cubic spline (RCS) analyses were employed to explore the associations between TyG indices and outcomes. To mitigate potential biases, a no-replacement propensity score matching (PSM) approach was employed. Subgroup analyses were conducted to explore differences across various demographic and clinical categories.

Results

A positive correlation between the quartile groupings of TyG-AVG and an increased cumulative incidence of delirium in individuals with severe AKI, as demonstrated through K-M cumulative curves and Cox regression analysis. Regarding the TyG index, patients in the 4th group displayed the highest hazard of delirium in both of the methods mentioned above. Furthermore, RCS analysis indicated that the interaction between the two variables is approximately linear. Subgroup analyses revealed that the effects of both metrics remained consistent across most examined subgroups.

Conclusion

Higher TyG indices were clearly associated with the incidence of delirium in patients with severe AKI. These indices could serve as valuable tools for identifying delirium-prone individuals with AKI.

Mobility Loss in Hospitalized Adults Predicts Poor Clinical Outcomes

BACKGROUND

The Johns Hopkins Activity and Mobility Program is a systematic approach to measure and improve patient mobility.

PURPOSE

The purpose of this study was to evaluate the relationship between mobility loss and quality outcomes.

METHODS

A retrospective cohort study design was used. Patients were categorized into 3 groups (gain, loss, no change in mobility) using the Johns Hopkins Highest Level of Mobility (JH-HLM) scores. The association between mobility loss and falls risk, in-hospital mortality, delirium, discharge to a facility, length of stay, and 30 day readmissions were assessed.

RESULTS

Those who lost mobility were more at risk of being a high fall risk, in-hospital mortality, delirium, discharging to a facility, and had 48% longer lengths of stay. There was no association between mobility loss and 30-day readmissions.

CONCLUSIONS

Loss of mobility assessed using JH-HLM scores is associated with worse patient outcomes.

Risk factors for postoperative delirium in patients undergoing orthopedic procedures: a systematic review and meta-analysis

Delirium is a common complication in surgical patients following operative procedures; it often occurs in patients undergoing lower-extremity surgery. It is essential to identify and prevent the risk factors for postoperative delirium (POD) in these cases. We aimed to determine the risk factors for POD in patients who underwent lower-extremity surgery through a systematic review and meta-analysis. We included observational studies identifying risk factors for POD in patients undergoing orthopedic surgery. Data sources included the Cumulative Index to Nursing and Allied Health Literature and MEDLINE. We extracted the variables related to delirium that were analyzed by two or more studies meeting the eligibility criteria. A random-effects model was used to calculate the pooled odds ratio, standardized mean difference, and 95% confidence interval. Data were considered significant when p <  0.05. Twenty-seven studies with a total sample size of 9,044 were evaluated. Our meta-analysis revealed 20 risk factors for patients with POD undergoing orthopedic surgery, including age, cognitive scores, various preoperative laboratory values (such as serum albumin, C-reactive protein, and thyroid hormones), length of hospital stay, surgery and anesthesia duration, blood transfusion, and previous health conditions such as dementia and cardiovascular disease. Gathering preoperative and postoperative data was crucial for identifying high-risk patients for POD. In addition, preventive measures targeting POD risk factors could reduce its occurrence after orthopedic surgery.

Frailty in Cardiac Surgery-Assessment Tools, Impact on Outcomes, and Optimisation Strategies: A Narrative Review

BACKGROUND

Advancements in surgical care have made it possible to offer cardiac surgery to an older and frailer patient cohort. Frailty has been recognised as a prognostic indicator that impacts post-operative recovery and patient outcomes. The aim of this study is to identify frailty assessment tools, evaluate the impact of frailty on post-operative outcomes, and explore strategies to optimise care for frail patients undergoing cardiac surgery.

METHODS

A comprehensive literature search was performed across PubMed, MEDLINE, and SCOPUS to identify articles reporting post-operative outcomes related to frail patients undergoing cardiac surgery.

RESULTS

Measurement tools such as gait speed, the Clinical Frailty Scale, Fried frailty phenotype, deficit accumulation frailty index and the Short Physical Performance Battery can be used to assess frailty. Frailty has been reported to increase the risk of post-operative morbidity and mortality. Multiple studies have also reported the association between frailty and an increased length of intensive care unit and hospital stays, as well as an increased risk of post-operative delirium. It is important to perform a comprehensive frailty assessment and implement perioperative optimisation strategies to improve outcomes in this patient population. Pre-operative strategies that can be considered include adequate nutritional support, cardiac prehabilitation, and assessing patients using a multidisciplinary team approach with geriatric involvement. Post-operatively, interventions such as early recognition and treatment of post-operative delirium, nutrition optimisation, early planning for cardiac rehabilitation, and occupational therapy can support patients' recovery and reintegration into daily activities.

CONCLUSIONS

The early identification of frail patients during the perioperative period is essential for risk stratification and tailored management strategies to minimise the impact of frailty on outcomes following cardiac surgery.

Implementation of intervention programs specifically tailored for patients with cognitive impairment as comorbidity in early rehabilitation during acute hospitalization: An umbrella and scoping review

INTRODUCTION

Cognitive impairment (CI) is common among older hospitalized patients, posing risks for adverse events. However, the extent to which early rehabilitation interventions address CI needs is unclear. This umbrella and scoping review evaluates CI consideration in such interventions during acute hospitalization.

MATERIAL AND METHODS

Systematic reviews on early rehabilitation interventions for older patients were screened. Inclusion criteria encompassed CI mention in titles/objectives, patient assessment/description, inclusion of CI patients, (sub-) analyses by cognitive status, and tailored interventions.

RESULTS

Of 199 studies, only 3% addressed CI in titles/objectives, 68% assessed cognitive status, and 42% lacked CI patient information. Only 4% targeted CI patients, 55% included mixed populations. In 12% of studies, CI patient results were reported, 8% adjusted analyses for CI. Only 5% tailored interventions for CI.

DISCUSSION

Despite high prevalence, CI patients are largely overlooked in early rehabilitation. Future studies should consider CI in assessment, description, analysis, and intervention design.

Person-centered occupational therapy intervention for the prevention of delirium and improvement in occupational performance in elderly patients admitted to an intensive care unit: A randomized controlled single-blinded trial protocol

Among the deleterious effects caused by hospitalization of elderly patients in intensive care unit (ICU), delirium and impaired performance in occupations are frequent and have long-term negative outcomes. Delirium protocols described in the literature vary in frequency, intensity, and content regarding pertinent interventions. Occupational Therapy (OT) practices are heterogeneous and generally consist of non-personalized interventions. For this reason, the primary outcome of this research is to evaluate the effect of a person-centered OT protocol on the prevention of delirium and the occupational performance of elderly patients admitted to the ICU. This is a randomized clinical trial with blinded assessment of the primary outcome (delirium). A total of 114 patients will be recruited and randomized to the intervention group, where care goals will be defined according to meaningful occupations and personalized cognitive stimulation will be based on patient´s topics of interest, in addition to the institutional standard protocol (ISP); or to the control group, which will receive only the ISP. To our knowledge, this will be the first randomized controlled trial with personalized occupational therapy interventions, as well as care goals, based on patients´ meaningful occupations for the prevention of delirium and improvement of occupational performance in critically ill elderly patients. This clinical trial is duly registered on the ClinicalTrials.gov platform (NCT06479031).

Efficacy and safety of gastrodin in preventing postoperative delirium following cardiac surgery: a randomized placebo controlled clinical trial

BACKGROUND

Delirium and postoperative cognitive dysfunction (POCD) are common complications post-cardiac surgery, yet no specific medical intervention is currently recommended for prevention. This study aimed to evaluate the efficacy of gastrodin infusion in preventing delirium and POCD in critically ill patients following cardiac surgery.

MATERIAL AND METHODS

A double-blind, randomized, placebo-controlled trial was conducted on patients aged 18-75, scheduled for coronary artery bypass grafting (CABG) surgery, with or without valve replacement. Participants were randomized in a 1:1 ratio to receive gastrodin infusion 600 mg twice daily or placebo from the day of surgery until the postoperative day (POD) 6. The co-primary outcomes were the incidences of delirium and POCD, assessed from ICU admission until POD 7 and at 1 and 3 months postoperatively. This study was registered with the Chinese Clinical Trials Registry (ChiCTR1800020414).

RESULTS

Of 160 randomized participants, 155 were analyzed (77 gastrodin, 78 placebo) according to a modified intention to treat principle. The incidence of postoperative delirium was 19.5% in the gastrodin group and 35.9% in the placebo group, with a significant relative risk of 0.54 (95% CI 0.32-0.93, p = 0.022). The incidence of in-hospital POCD was 2.9% and 4.0% in the placebo and gastrodin groups, respectively. The odds of hospital discharge were significantly greater in the gastrodin group (subhazard ratio, 1.20; 95% CI 1.00-1.84; p = 0.049). Adverse events occurred in 9.1% (7/77) of patients administered gastrodin and 14.1% (11/78) of patients administered the placebo, with none being drug-related.

CONCLUSION

Gastrodin infusion significantly reduced postoperative delirium and improved discharge outcomes in patients undergoing CABG, but larger studies are needed to confirm its efficacy in preventing delirium.

Otoacoustic Emissions Testing to Identify Hearing Loss in the ICU: A Feasibility Study

OBJECTIVES

Hearing impairment is associated with delirium among ICU patients and a lack of functional recovery among older ICU survivors. We assessed the feasibility of using otoacoustic emissions (OAEs) testing to screen for preexisting hearing loss in the ICU.

DESIGN

Pilot study.

SETTING

Medical ICU at a tertiary medical center.

PATIENTS

All adults (age ≥ 18) and admitted to the medical ICU between November 29, 2021, and December 03, 2021, were eligible for the study.

INTERVENTIONS

OAE is a noninvasive, nonparticipatory tool that is used to screen for hearing loss by detecting intracochlear motion in response to auditory stimulation. The presence or absence of OAE was tested at six frequencies (1 k, 1.5 k, 2 k, 3 k, 4 k hertz).

MEASUREMENTS AND MAIN RESULTS

The primary outcome of feasibility was defined a priori as completion of greater than or equal to 70% of attempted tests. Average time of test completion and barriers or facilitators were also measured as outcomes. A patient passed OAE testing if at least two of six frequencies were detected in at least one ear, suggesting they did not have moderate or severe hearing impairment (that would require an amplifier). Data were also gathered on demographics, delirium, ventilation, sedation, illness severity, and ambient noise. Of 31 patients approached, 23 (74.2%) underwent testing. Eight patients (25.8%) were unable to be tested, most commonly due to elevated ambient noise. Among the 18 patients with complete data, six patients screened positive for hearing loss. The average time for OAE test completion per ear was 152.6 seconds (sd = 97.6 s).

CONCLUSIONS

OAE testing is a feasible method to screen for hearing loss in the ICU, including in nonparticipatory patients. Identification of hearing loss would facilitate improved communication through interventions such as amplifiers and accommodations. Future studies should evaluate whether identification and treatment of hearing loss in the ICU may reduce delirium and improve post-ICU recovery.

Delirium prevention in hospices: Opportunities and limitations - A focused ethnography

BACKGROUND

Delirium is common and distressing for hospice in-patients. Hospital-based research shows delirium may be prevented by targeting its risk factors. Many preventative strategies address patients' fundamental care needs. However, there is little research regarding how interventions need to be tailored to the in-patient hospice setting.

AIM

To explore the behaviours of hospice in-patient staff in relation to delirium prevention, and the influences that shape these behaviours.

DESIGN

Focused ethnography supported by behaviour change theory. Observation, semi-structured interviews and document review were conducted.

SETTING/PARTICIPANTS

A total of 89 participants (multidisciplinary staff, volunteers, patients and relatives) at two UK in-patient hospice units.

RESULTS

Hospice clinicians engaged in many behaviours associated with prevention of delirium as part of person-centred fundamental care, without delirium prevention as an explicit aim. Carrying out essential care tasks was highly valued and supported by adequate staffing levels, multidisciplinary team engagement and role clarity. Patients' reduced physical capability limited some delirium prevention behaviours, as did clinicians' behavioural norms related to prioritising patient comfort. Delirium prevention was not embedded into routine assessment and care decision-making, despite its potential to reduce patient distress.

CONCLUSIONS

The value placed on fundamental care in hospices supports delirium prevention behaviours but these require adaptation as patients become closer to death. There is a need to increase clinicians' understanding of the potential for delirium prevention to reduce patient distress during illness progression; to support inclusion of delirium prevention in making decisions about care; and to embed routine review of delirium risk factors in practice.

Telenovela (Spanish Soap Opera) Interventions on Latino Health: A Scoping Review

Introduction: The use of telenovelas shows promise as a mode of education that could enhance Latino people's ability to prevent or manage different health conditions. This scoping review examined the available evidence about telenovela interventions on Latino health. Methods: A scoping review was conducted by searching five peer-reviewed databases for articles published on any date in English or Spanish. The methods of this review were guided by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews recommendations. Results: A total of 431 articles were identified, and 22 articles published between 1999 and 2022 were included in the final scoping review. Nineteen telenovela interventions were described in the literature. Most studies included telenovela interventions without other elements (n = 15; 68%), and 91% were conducted in the U.S. (n = 20). Studies were qualitative (n = 8; 36%), quantitative (n = 8; 36%), and mixed methods (n = 6; 27%), and most telenovela interventions were developed and/or tested in Spanish (n = 10; 53%). The most common topics for the telenovela interventions were substance use/risky sexual health behaviors, cardiovascular disease, and mental health. Conclusions: This scoping review may serve to continue empirical and theoretical work on telenovela-style entertainment interventions on Latino health and future implementation in real-life settings.

Delirium risk profiles in a population-based study of United States older adults undergoing common noncardiac surgeries

BACKGROUND

Older adults often require surgical care and are at elevated risk of delirium. We explored delirium risk profiles across the population of U.S. older adults who underwent one of 10 common noncardiac surgeries.

METHODS

We analyzed Health and Retirement Study (HRS) participants linked with Medicare billing data who underwent the following 10 noncardiac surgeries from 2000 to 2018 at age 65 or more: total knee arthroplasty (TKA), total hip arthroplasty (THA), spine surgery, cholecystectomy, colorectal surgery, hernia repair (ventral, umbilical, or incisional), endarterectomy, prostatectomy, transurethral resection of the prostate (TURP), and hysterectomy. Demographic and health covariates were obtained from the HRS dataset. Latent cognitive ability was calculated from cognitive testing, proxy reports, and demographics at the preoperative HRS interview. We compared standardized differences for delirium risk factors across the 10 surgeries and qualitatively clustered them into phenotypical subgroups.

RESULTS

We analyzed 7424 older adults (mean age 76 ± 6 years, 45% male). Endarterectomy patients presented with the highest burden of nearly all health and cognitive factors, implying higher delirium risk (e.g., stroke, 22%; depressive symptoms, 30%; high school or less education, 73%; frailty, 42%; lowest latent cognitive ability). A second "general surgery" phenotype, including cholecystectomy, colorectal, and hernia surgery patients, experienced more frailty (29%-32%) and depressive symptoms (24%-26%), with moderate comorbidity burden. A third "pain" phenotype, which included TKA, THA, and spine surgery patients, commonly reported moderate or severe pain (47%-53%) and impairment in activities of daily living (ADL, 23%-30%), but fewer comorbid medical conditions. The remaining surgery types (hysterectomy, prostatectomy, TURP) were not phenotypically grouped and generally had lower risk features for delirium.

CONCLUSION

In an epidemiological cohort of US older adults, we identified clinically meaningful heterogeneity in delirium risk profiles across different surgical types, which may have implications for delirium risk stratification and delirium prevention or treatment.

Discriminative Ability and Associations of Sarcopenia Using Point-of-Care Ultrasound with Functional, Mobility and Frailty Status in Older Inpatients

Background/Objectives: We aimed to assess the discriminative ability of point-of-care ultrasound (POCUS) of the rectus femoris (RF) to detect sarcopenia and to examine associations of these sarcopenia measures with functional, mobility, and frailty status among older inpatients. Methods: Data were analysed from 161 patients aged 70 years and older consecutively admitted to a tertiary geriatric rehabilitation hospital between October and December 2023. The RF thickness and cross-sectional area (CSA) were measured using POCUS applying validated cut-offs. Ability of muscle ultrasound to detect sarcopenia based on bioelectrical impedance analysis (BIA) as the reference standard was calculated using receiver operating characteristics analyses (ROC). Second, associations of sarcopenia measures based on either the ultrasonographic RF thickness, or the RF cross-sectional area with functional, frailty, and mobility status were analysed using multivariable logistic regression analyses. Results: Mean age was 84.0 years (standard deviation (SD) 6.1 years) and 64.4% were women. Overall, 31 (19.3%) patients had sarcopenia based on low grip strength and low muscle mass using the BIA. The mean ultrasonographic RF thickness and CSA were 13 mm (SD 4.1) and 4.3 cm2 (SD 1.7), respectively. Correlation coefficients of the RF thickness with BIA-muscle mass were r = 0.52 in males, versus r = 0.40 in females. Both sarcopenia measures using the RF thickness and CSA were positively associated with functional (adjusted odds ratio (OR) 9.3 (95% CI 3.7-23.4) and 9.2 (3.6-23.7)) and frailty status (OR 4.0 (95% CI 2.1-12.1) and 4.3 (1.8-10.4)). None of the sarcopenia measures were significantly associated with mobility status. Conclusions: Rectus femoris thickness and CSA measured by POCUS showed a fair discriminative ability to detect sarcopenia based on BIA, suggesting that BIA and POCUS measure different aspects of muscle health. A strong association between sarcopenia based on POCUS and functional and frailty status suggest the potential utility of POCUS in the diagnostic evaluation of sarcopenia among older hospitalised patients; however, further study is required. Research should focus on establishing valid sex-specific cut-offs for grip strength and muscle mass, with the ultimate goal of developing a low-cost, bedside, and sensitive diagnostic toolkit for detecting sarcopenia in older patients.

Characteristics, Complications, and Outcomes of Critical Illness in Patients with Parkinson Disease

BACKGROUND

Adults with Parkinson disease (PD) are hospitalized at higher rates than age-matched controls, and these hospitalizations are associated with significant morbidity. However, little is known about the consequences of critical illness requiring intensive care unit (ICU)-level care in patients with PD. The aim of this study was to define the characteristics and outcomes of adults with PD admitted to the ICU.

METHODS

We performed a retrospective nested case-control study using the Medical Information Mart for Intensive Care IV data set. Adults with PD were identified, and the index ICU admission for these subjects was matched 1:4 with index ICU admissions without a PD diagnosis based on age, sex, comorbidities, illness severity, ICU type, and need for mechanical ventilation. Primary outcomes were in-hospital mortality and discharge location. Secondary outcomes were length of stay and prespecified complications.

RESULTS

A total of 630 adults with PD were identified. Patients with PD were older and were more likely to be male, have more comorbidities, and have higher illness severity at presentation. A matched analysis revealed adults with PD did not have a significant difference in in-hospital mortality but were more likely to be discharged to a higher level of care. Adults with PD had longer hospital lengths of stay and increased odds of delirium, pressure ulcers, and ileus.

CONCLUSIONS

During critical illness, patients with PD are at increased risk for longer hospital lengths of stay and complications and require a higher level of care at discharge than matched controls. These findings reveal targets for interventions to improve outcomes for patients with PD and may inform discussions about goals of care in this population.

Delirium due to any cause is associated with higher resource utilization in patients undergoing liver transplantation: analysis of the National Inpatient Sample

OBJECTIVE

The only curative treatment for patients with end-stage liver disease (ESLD) is liver transplantation (LT). Patients with ESLD can develop delirium due to multiple etiologies. In this study, we aimed to assess the prevalence and impact of delirium on outcomes and resource utilization among hospitalized patients undergoing LT.

METHODS

We used the National Inpatient Sample Database 2016-2020 to identify adult patients undergoing LT. Patients were stratified into two groups based on the presence of delirium. The outcomes studied were in-hospital mortality, perioperative adverse events, and resource utilization. Multivariate logistic and linear regression analysis was used to identify the relationship between delirium and outcomes.

RESULTS

Of 34 405 included patients, 4930 (14.3%) patients had delirium. Patients with delirium had a higher need for renal replacement therapy (31.7% vs. 17.6%, P  < 0.001), vasopressor support (16.8% vs. 11.1%, P  < 0.001), and mechanical ventilation (34.1% vs. 15.3%, P  < 0.001). They also had higher total perioperative complications (77.3% vs. 60.4%, P  < 0.001), longer length of stay (34.8 vs. 17. 7, P  < 0.001), and total hospitalization charges ($927 200 vs. $565 486 P  < 0.001). After multivariable analysis, patients with delirium had higher odds of perioperative complications (adjusted odds ratio: 1.54, 95% confidence interval: 1.24-1.92, P  < 0.001) and resource utilization.

CONCLUSION

Our finding suggests the need for physicians to identify and reverse delirium as soon as possible.

Assessment of Geriatric Problems and Risk Factors for Delirium in Surgical Medicine: Protocol for Multidisciplinary Prospective Clinical Study

BACKGROUND

An aging population in combination with more gentle and less stressful surgical procedures leads to an increased number of operations on older patients. This collectively raises novel challenges due to higher age heavily impacting treatment. A major problem, emerging in up to 50% of cases, is perioperative delirium. It is thus vital to understand whether and which existing geriatric assessments are capable of reliably identifying risk factors, how high the incidence of delirium is, and whether the resulting management of these risk factors might lead to a reduced incidence of delirium.

OBJECTIVE

This study aimed to determine the frequency and severity of geriatric medical problems in elective patients of the Clinics of Oral and Maxillofacial Surgery, Vascular Surgery, and Orthopedics, General Surgery, and Trauma Surgery, revealing associations with the incidence of perioperative delirium regarding potential risk factors, and recording the long-term effects of geriatric problems and any perioperative delirium that might have developed later the patient's life.

METHODS

We performed both pre- and postoperative assessments in patients of 4 different surgical departments who are older than 70 years. Patient-validated screening instruments will be used to identify risk factors. A geriatric assessment with the content of basal and instrumental activities of daily living (basal activities of daily living [Katz index], instrumental activities of daily living [Lawton and Brody score], cognition [6-item screener and clock drawing test], mobility [de Morton Mobility Index and Sit-to-Stand test], sleep [Pittsburgh Sleep Quality Index and Insomnia Severity Index/STOP-BANG], drug therapy [polypharmacy and quality of medication, Fit For The Aged classification, and anticholinergic burden score], and pain assessment and delirium risk (Delirium Risk Assessment Tool) will be performed. Any medical problems detected will be treated according to current standards, and no intervention is planned as part of the study. In addition, a telephone follow-up will be performed 3, 6, and 12 months after discharge.

RESULTS

Recruitment started in August 2022, with 421 patients already recruited at the time of submission. Initial analyses of the data are to be published at the end of 2024 or the beginning of 2025.

CONCLUSIONS

In the current study, we investigate whether the risk factors addressed in the assessment are associated with an increase in the delirium rate. The aim is then to reduce this comprehensive assessment to the central aspects to be able to conduct targeted and efficient risk screening.

TRIAL REGISTRATION

German Clinical Trials Registry DRKS00028614; https://www.drks.de/search/de/trial/DRKS00028614.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/59203.

Effectiveness of non-pharmacological intervention protocol for prevention of postoperative delirium in the surgical intensive care unit

Postoperative delirium (POD) is a common adverse event in patients admitted to the intensive care unit (ICU). We aimed to determine the effectiveness of a multicomponent non-pharmacological intervention protocol to reduce the incidence of POD in elderly patients admitted to the surgical ICU (SICU). This before-and-after cohort study included 300 patients aged ≥ 65 years who were admitted to the SICU within 7 days postoperatively with an anticipated SICU stay > 24 h. During the pre-intervention period, patients received medical care based on the attending physicians. While during the intervention, patients received the same medical care plus a multicomponent non-pharmacological intervention protocol. POD was monitored twice daily using the Confusion Assessment Method for the ICU. Demographic and clinical data during SICU stay were collected and compared between the pre-intervention and intervention periods. The primary outcome was POD incidence. The secondary outcomes were POD duration, delirium-free days, and other clinical outcomes. The incidences of POD during the pre-intervention and intervention periods were not different (40.0% vs. 38.0%, P = 0.723; OR 0.92, 95% CI 0.58-1.46). Multivariate regression analyses with two different models demonstrated that the multicomponent non-pharmacological intervention protocol was not associated with POD prevention (OR 0.70, 95% CI 0.39-1.25 for Model 1 and OR 0.63, 95% CI 0.37-1.08 for Model 2). The protocol was associated with lower incidence of SICU events, particularly self-removal of endotracheal tube and nosocomial infection. Implementation of the multicomponent non-pharmacological intervention protocol was not associated with POD prevention in elderly patients admitted to the SICU.Trial registration Thai Clinical Trials Registry. Trial No. TCTR20181201001. Retrospective registered 01 December 2018.

Development and Validation of a Routine Electronic Health Record-Based Delirium Prediction Model for Surgical Patients Without Dementia: Retrospective Case-Control Study

BACKGROUND

Postoperative delirium (POD) is a common complication after major surgery and is associated with poor outcomes in older adults. Early identification of patients at high risk of POD can enable targeted prevention efforts. However, existing POD prediction models require inpatient data collected during the hospital stay, which delays predictions and limits scalability.

OBJECTIVE

This study aimed to develop and externally validate a machine learning-based prediction model for POD using routine electronic health record (EHR) data.

METHODS

We identified all surgical encounters from 2014 to 2021 for patients aged 50 years and older who underwent an operation requiring general anesthesia, with a length of stay of at least 1 day at 3 Indiana hospitals. Patients with preexisting dementia or mild cognitive impairment were excluded. POD was identified using Confusion Assessment Method records and delirium International Classification of Diseases (ICD) codes. Controls without delirium or nurse-documented confusion were matched to cases by age, sex, race, and year of admission. We trained logistic regression, random forest, extreme gradient boosting (XGB), and neural network models to predict POD using 143 features derived from routine EHR data available at the time of hospital admission. Separate models were developed for each hospital using surveillance periods of 3 months, 6 months, and 1 year before admission. Model performance was evaluated using the area under the receiver operating characteristic curve (AUROC). Each model was internally validated using holdout data and externally validated using data from the other 2 hospitals. Calibration was assessed using calibration curves.

RESULTS

The study cohort included 7167 delirium cases and 7167 matched controls. XGB outperformed all other classifiers. AUROCs were highest for XGB models trained on 12 months of preadmission data. The best-performing XGB model achieved a mean AUROC of 0.79 (SD 0.01) on the holdout set, which decreased to 0.69-0.74 (SD 0.02) when externally validated on data from other hospitals.

CONCLUSIONS

Our routine EHR-based POD prediction models demonstrated good predictive ability using a limited set of preadmission and surgical variables, though their generalizability was limited. The proposed models could be used as a scalable, automated screening tool to identify patients at high risk of POD at the time of hospital admission.

Effect of Age-Friendly Care on Days at Home Post-Hospital Discharge for Traditional Medicare Patients: A Cross-Sectional Study

The Bundled Payment for Care Improvement Advanced (BPCI-A) model encourages value-based care by bundling 90-day healthcare-related costs into a single payment for eligible service codes and procedures for traditional Medicare Part A and B beneficiaries. Our institution, an Age-Friendly Health Systems Level 2 certified academic health center, participated in the BPCI-A model from 2018 to 2022. This study aimed to determine differences in days spent at home in the 30- and 90-day post-hospitalization period for older patients in the BPCI-A program based on Age-Friendly care status. Descriptive analyses assessed differences among patients who received Age-Friendly care (n = 275) and those who did not (n = 348). Zero-one-inflated beta regression models with propensity score matching compared the probability of spending days at home between groups. Sensitivity analyses were conducted. Age-Friendly care recipients tended to be older males with non-emergent admissions and lower risk-adjusted mortality scores (P < .05). No significant differences were shown between groups at 30- and 90-days post-discharge for the original analysis. Sensitivity analyses found the probability of spending all eligible days at a facility 30-days post discharge significantly higher for those not receiving Age-Friendly care compared to those receiving Age-Friendly care (P < .05). Admissions receiving at least 3Ms resulted in less days in a facility within 30 days of discharge. This highlights the importance of patient-centered and value-based care during the hospital stay. Future studies should continue to explore days at home as a patient-centered outcome measure and how comprehensive Age-Friendly care impacts days at home for a larger cohort.

Navigating the Surgical Pathway for Frail, Older Adults Undergoing Colorectal Surgery

Adults ≥ 65 years of age comprise nearly 20% of the U.S. population and over half of surgical patients. Older adults, particularly when frail, may require additional preoperative evaluation and counseling, specialized hospital care, and may experience more noticeable physical and cognitive changes than younger or healthier patients. Surgeons can assess frailty and risk using several frailty measures, as data exist demonstrating worse perioperative outcomes among patients undergoing colorectal surgery. Prehabilitation programs have not been shown to improve surgical outcomes for colorectal surgery patients but may help maintain physical function or hasten recovery to baseline around the time of surgery, particularly for frail patients. Functional decline and delirium are common postoperatively in older adult patients, particularly those who are frail at baseline, and should be discussed with at-risk older adults. Primary care physicians and geriatricians can help with in-depth evaluation of frailty and geriatric syndromes. Special attention to the risks, outcomes, and care of older adults considering or undergoing colorectal surgery can help inform decision-making, which may facilitate goal-concordant care.

Advancing Delirium Treatment Trials in Older Adults: Recommendations for Future Trials From the Network for Investigation of Delirium: Unifying Scientists (NIDUS)

OBJECTIVES

To summarize the delirium treatment trial literature, identify the unique challenges in delirium treatment trials, and formulate recommendations to address each in older adults.

DESIGN

A 39-member interprofessional and international expert working group of clinicians (physicians, nurses, and pharmacists) and nonclinicians (biostatisticians, epidemiologists, and trial methodologists) was convened. Four expert panels were assembled to explore key subtopics (pharmacological/nonpharmacologic treatment, methodological challenges, and novel research designs).

METHODS

To provide background and context, a review of delirium treatment randomized controlled trials (RCTs) published between 2003 and 2023 was conducted and evidence gaps were identified. The four panels addressed the identified subtopics. For each subtopic, research challenges were identified and recommendations to address each were proposed through virtual discussion before a live, full-day, and in-person conference. General agreement was reached for each proposed recommendation across the entire working group via moderated conference discussion. Recommendations were synthesized across panels and iteratively discussed through rounds of virtual meetings and draft reviews.

RESULTS

We identified key evidence gaps through a systematic literature review, yielding 43 RCTs of delirium treatments. From this review, eight unique challenges for delirium treatment trials were identified, and recommendations to address each were made based on panel input. The recommendations start with design of interventions that consider the multifactorial nature of delirium, include both pharmacological and nonpharmacologic approaches, and target pathophysiologic pathways where possible. Selecting appropriate at-risk patients with moderate vulnerability to delirium may maximize effectiveness. Targeting patients with at least moderate delirium severity and duration will include those most likely to experience adverse outcomes. Delirium severity should be the primary outcome of choice; measurement of short- and long-term clinical outcomes will maximize clinical relevance. Finally, plans for handling informative censoring and missing data are key.

CONCLUSIONS

By addressing key delirium treatment challenges and research gaps, our recommendations may serve as a roadmap for advancing delirium treatment research in older adults.

Neurologic prognostication in coma and disorders of consciousness

Coma and disorders of consciousness (DoC) are clinical syndromes primarily resulting from severe acute brain injury, with uncertain recovery trajectories that often necessitate prolonged supportive care. This imposes significant socioeconomic burdens on patients, caregivers, and society. Predicting recovery in comatose patients is a critical aspect of neurocritical care, and while current prognostication heavily relies on clinical assessments, such as pupillary responses and motor movements, which are far from precise, contemporary prognostication has integrated more advanced technologies like neuroimaging and electroencephalogram (EEG). Nonetheless, neurologic prognostication remains fraught with uncertainty and significant inaccuracies and is impacted by several forms of prognostication biases, including self-fulfilling prophecy bias, affective forecasting, and clinician treatment biases, among others. However, neurologic prognostication in patients with disorders of consciousness impacts life-altering decisions including continuation of treatment interventions vs withdrawal of life-sustaining therapies (WLST), which have a direct influence on survival and recovery after severe acute brain injury. In recent years, advancements in neuro-monitoring technologies, artificial intelligence (AI), and machine learning (ML) have transformed the field of prognostication. These technologies have the potential to process vast amounts of clinical data and identify reliable prognostic markers, enhancing prediction accuracy in conditions such as cardiac arrest, intracerebral hemorrhage, and traumatic brain injury (TBI). For example, AI/ML modeling has led to the identification of new states of consciousness such as covert consciousness and cognitive motor dissociation, which may have important prognostic significance after severe brain injury. This chapter reviews the evolving landscape of neurologic prognostication in coma and DoC, highlights current pitfalls and biases, and summarizes the integration of clinical examination, neuroimaging, biomarkers, and neurophysiologic tools for prognostication in specific disease states. We will further discuss the future of neurologic prognostication, focusing on the integration of AI and ML techniques to deliver more individualized and accurate prognostication, ultimately improving patient outcomes and decision-making process in neurocritical care.

Feasibility of Alerting Systems and Family Care Partner Support for Postoperative Delirium Prevention

BACKGROUND

The objective of this study was to determine whether postoperative pager alerts to the Hospital Elder Life Program (HELP), a delirium prevention service, would accelerate program enrollment for older surgical patients. This study also tested feasibility of family care partner interventions for delirium prevention.

METHODS

This single-center, pilot clinical trial factorially randomized 57 non-cardiac surgical patients ≥70 years of age to 4 arms: (1) standard care, (2) pager alerts to accelerate HELP enrollment, (3) family care partner-based delirium prevention interventions, or (4) a combined arm with both HELP and family interventions. The primary clinical outcome was delirium (assessed through the Confusion Assessment Method).

RESULTS

In the pager alerting arms, 13/24 (54%) participants were enrolled by HELP on postoperative day 1 compared with 0/26 (0%, P<0.001) in the non-alerting arms. Median [interquartile range] time spent in delirium prevention protocols was significantly longer in pager alerting arms than in non-alerting arms (39 [5 to 75] min vs. 0 [0 to 0] min; P<0.001). Family care partners spent 18 [11 to 25)] hours at the bedside over the first 3 postoperative days. There was no significant difference in delirium occurrence in participants randomized to pager alert arms compared with non-alerting arms (odds ratio, 1.02, 95% CI, 0.97-1.07; P=0.390). Similarly, there was no significant difference in delirium occurrence in family intervention arms compared with nonintervention arms (odds ratio, 0.97; 95% CI 0.93-10.02; P=0.270).

CONCLUSIONS

Pager alerts significantly reduced time to HELP enrollment, albeit without reducing delirium incidence in this pilot study. Family care partners spent substantial time at the bedside during the study period.

Overtime work of anesthesiologists is associated with increased delirium in older patients admitted to intensive care unit after noncardiac surgery: a secondary analysis

BACKGROUND

Overtime work is common in anesthesiologists due to shortage of manpower. Herein, we analyzed if overtime work of anesthesiologists was associated with delirium development in older patients after surgery.

METHODS

This was a secondary analysis of the database from a randomized trial. Seven hundred older patients (aged ≥ 65 years) who were admitted to the intensive care unit (ICU) after elective noncardiac surgery were enrolled in the underlying trial. Anesthesiologists who worked continuously for more than 8 h by the end of the surgery were marked as "work overtime". Delirium was assessed with the Confusion Assessment Method for the ICU twice daily during the first 7 postoperative days. The association between overtime work of anesthesiologists and development of postoperative delirium was analyzed with multivariable logistic regression models.

RESULTS

All 700 patients (mean age 74.3 years, 39.6% female) were included in this analysis. Anesthesiologists of 281 patients (40.1%) were marked as "work overtime" at the end of surgery. When compared with patients whose anesthesiologists didn't work overtime, patients whose anesthesiologist worked overtime had a higher incidence of delirium within 7 days (20.3% [57/281] vs. 12.9% [54/419], P = 0.009). After correction for confounding factors, both overtime work (OR 1.87, 95% CI 1.19-2.94, P = 0.007) and prolonged continuous working hours of anesthesiologists (OR 1.08, 95% CI 1.01-1.15, P = 0.020) were associated with an increased risk of postoperative delirium.

CONCLUSIONS

Overtime work of anesthesiologists was associated with an increased risk of delirium development in older patients admitted to ICU after major noncardiac surgery.

TRIAL REGISTRATION

The underlying trial was registered with Chinese Clinical Trial Registry ( https://www.chictr.org.cn/showproj.html?proj=8734 ; ChiCTR-TRC-10000802; March 18, 2010).

Relevance of Preoperative Cognitive Impairment for Predicting Postoperative Delirium in Surgical Medicine: A Prospective Cohort Study

BACKGROUND

Post-operative delirium is a dreaded complication after surgery in older patients. The identification of risk factors for delirium and comprehensive geriatric assessment is an extensive part of recent research. However, the preoperative assessment of risk factors, such as impaired cognition, is frequently not standardized.

METHODS

A comprehensive preoperative assessment was performed in 421 surgical patients to investigate the impact of preoperative cognitive impairment (PCI) on the risk of delirium and to evaluate appropriate screening tools (Six-item screener (SIS) and clock-drawing test (CDT)).

RESULTS

Both screening tools showed a significantly increased risk of delirium with p < 0.001 (OR 12.5, 95% [6.42; 24.4]) in SIS and p = 0.042 (OR 2.02, 95%CI [1.02; 4.03]) in CDT for existing cognitive impairment. A higher level of care (p < 0.001) and statutory care (p < 0.001, OR 5.42, 95%CI [2.34; 12.6]) also proved to be significant risk factors. The ROC curves of the two tests show AUC values of 0.741 (SIS) and 0.630 (CDT). The COP values for the SIS are 4 points with a Youden index of 0.447; for the CDT, the COP is 2 (Youden index = 0.177).

CONCLUSIONS

The recording of PCI should be a central component of the preoperative geriatric assessment. The tools used are simple yet effective and can be easily implemented in routine clinical practice. By reliably identifying patients at risk, the available resources can be personalized and used in a targeted approach.

Diagnostic Approach to the Patient with Altered Mental Status

Acute encephalopathy is a common presenting symptom in the emergency room and complicates many hospital and intensive care unit admissions. The evaluation of patients with encephalopathy poses several challenges: limited history and examination due to the patient's mental status, broad differential diagnosis of systemic and neurologic etiologies, low yield of neurodiagnostic testing due to the high base rate of systemic causes, and the importance of identifying less common neurologic causes of encephalopathy that can be life-threatening if not identified and treated. This article discusses the differential diagnosis of acute encephalopathy, presents an approach to the history and examination in a patient with encephalopathy, reviews the literature on the yield of neurodiagnostic testing in this population, and provides a diagnostic framework for the evaluation of patients with altered mental status.

Disparities in Delirium across the Continuum of Care and Associations with Social Determinants of Health

Disparities exist in the identification, treatment, and management of delirium. These disparities can be most holistically and comprehensively understood by using a social-ecological model-which acknowledges multilevel impacts including individual, interpersonal, organizational, community, and policy-level factors-as well as a social determinant of health framework, that considers nonmedical factors that influence health outcomes. This narrative review leverages both frameworks to identify and discuss existing literature pertaining to the intersection of these social risk factors and delirium, focusing specifically on disparities due to racial and/or ethnic identity, language ability, and socioeconomic differences. We also look at disparities and the potential role of these social risk factors throughout the continuum of care, including prehospitalization, hospitalization, and posthospitalization factors. Understanding and analyzing the role of these inequities is critical to ensuring better health outcomes for patients at risk of and/or with delirium.

Resilience, Survival, and Functional Independence in Older Adults Facing Critical Illness

BACKGROUND

Older adults surviving critical illness often experience new or worsening functional impairments. Modifiable positive psychological constructs such as resilience may mitigate post-intensive care morbidity.

RESEARCH QUESTION

Is pre-ICU resilience associated with: (1) post-ICU survival; (2) the drop in functional independence during the ICU stay; or (3) the trend in predicted independence before vs after the ICU stay?

STUDY DESIGN AND METHODS

This retrospective cohort study was performed by using Medicare-linked Health and Retirement Study surveys from 2006 to 2018. Older adults aged ≥ 65 years admitted to an ICU were included. Resilience was calculated prior to ICU admission. The resilience measure was defined from the Simplified Resilience Score, which was previously adapted and validated for the Health and Retirement Study. Resilience was scored by using the Leave-Behind survey normalized to a scale from 0 (lowest resilience) to 12 (highest resilience). Outcomes were survival and probability of functional independence. Survival was modeled by using Gompertz models and independence using joint survival models adjusting for sociodemographic and clinical variables. Average marginal effects were estimated to determine independence probabilities.

RESULTS

Across 3,409 patients aged ≥ 65 years old admitted to ICUs, preexisting frailty (30.5%) and cognitive impairment (24.3%) were common. Most patients were previously independent (82.7%). Mechanical ventilation occurred in 14.8% and sepsis in 43.2%. Those in the highest resilience group (vs lowest resilience) had a lower risk of post-ICU mortality (adjusted hazard ratio, 0.81; 95% CI, 0.70-0.94). Higher resilience was associated with greater likelihood of post-ICU functional independence (estimated probability of functional independence 5 years after ICU discharge in highest-to-lowest resilience groups (adjusted hazard ratio [95% CI]): 0.53 (0.33-0.74), 0.47 (0.26-0.68), 0.49 (0.28-0.70), and 0.36 (0.17-0.55); P < .01. Resilience was not associated with a difference in the drop in independence during the ICU stay or a difference in the pre-ICU vs post-ICU trend in predicted independence .

INTERPRETATION

ICU survivors with higher resilience had increased rates of survival and functional independence, although the slope of functional decline before vs after the ICU stay did not differ according to resilience group.

A longitudinal multimodal MRI study of the visual network in postoperative delirium

Although structural and functional damage to the brain is considered to be an important neurobiological mechanism of postoperative delirium (POD), alterations in the visual cortical network related to this vulnerability have not yet been determined. In this study, we investigated the impact of alterations in the visual network (VN), as measured by structural and functional magnetic resonance imaging (MRI), on the development of POD. Thirty-six adult patients with frontal glioma who underwent elective craniotomy were recruited. The primary outcome was POD 1-7 days after surgery, as assessed by the Confusion Assessment Method. Cognition before surgery was measured by a battery of neuropsychological tests. Then, we evaluated preoperative and postoperative gray matter volume (GMV) and functional connectivity (FC) alterations by voxel-based morphometry and resting-state functional MRI (rs-fMRI) between the POD and non-POD groups. Multiple logistic regression models were used to investigate the associations between neuroimaging biomarkers and the occurrence of POD. Compared to those in the non-POD group, a decreased GMV in the fusiform gyrus (0.181 [0.018] vs. 0.207 [0.022], FDRp = 0.001) and decreased FC between the fusiform gyrus and VN (0.351 [0.153] vs. 0.610 [0.197], GFRp < 0.001) were observed preoperatively in the POD group, and increased FC between the fusiform gyrus and ventral attentional network (0.538 [0.180] vs. 0.452 [0.184], GFRp =  < 0.001) was observed postoperatively in the POD group. According to our multiple logistic regression analysis, age (Odds ratio [OR]: 1.141 [1.015 to 1.282], P = 0.03) and preoperative fusiform-VN FC (OR 0.001 [0.001 to 0.067], P = 0.01) were significantly related to risk of POD. Our findings suggested that preoperative functional disconnectivity between fusiform and VN might be highly involved in the development of POD. These findings may allow for the discovery of additional underlying mechanisms.

Evaluation of the effects of a team-based systematic prevention and management program for postoperative orthopedic older patients: A retrospective cohort study

Aim

This study aimed to evaluate a team-based systematic prevention and management program for delirium (a multicomponent intervention addressing potentially modifiable risk factors based on the DELirium Team Approach [DELTA]) in older patients undergoing orthopedic surgery within a real-world clinical setting. The DELTA program was initiated at our hospital in January 2019.

Methods

A retrospective before-after study was conducted during a preintervention period (January 1, 2017 to December 31, 2018) and a postintervention period (January 1, 2020 to December 31, 2021) at orthopedic wards of an advanced acute care hospital in Japan. A total of 787 inpatients were evaluated before the preintervention period, and 833 inpatients were evaluated after the postintervention period.

Results

After the DELTA program's implementation, a significant decrease in benzodiazepine receptor agonist prescriptions (odds ratio [OR], 0.39; 95% confidence interval [CI], 0.29-0.53) and an increase in prescriptions of either melatonin receptor agonists or dual orexin receptor antagonists (OR, 3.83; 95% CI, 2.49-5.88) were observed. However, no significant difference was observed in the incidence of falls, self-extubation, or required level of medical and nursing care, including risky behavior and inability to follow medical or care instructions following the intervention, despite a reduction in the length of hospital stay and institutionalization.

Conclusion

Implementing the DELTA program for older patients undergoing orthopedic surgery contributed to optimizing the prescription of hypnotics; however, the impact on other patient outcomes, such as falls, self-extubation, and required level of medical and nursing care was limited.

Nonpharmacological Prevention and Management of Delirium: Past, Present, and Future

Delirium has been recognized, documented, and examined for centuries. In 500 BC Hippocrates described hyper- and hypoactive forms of delirium. As medicine, surgery, and critical care have accelerated over the last century, so too has our understanding of delirium and its profound risks to patients, families, and health care teams. It has also been increasingly understood that it is the accumulation of risk factors that ultimately precipitates delirium and nonpharmacological interventions to reduce these risks remain the cornerstone of delirium prevention and management. However, over the last three decades, these nonpharmacological strategies have moved from a single-component approach to a multicomponent approach, targeting multiple risk factors. Additionally, our understanding of what constitutes a risk factor for delirium has evolved, and in particular, it has been recognized that delirium can sometimes be a byproduct of our interventions and health care systems. In the surgical setting, for example, optimization of risk factors prior to surgery, when possible, is now seen as a key way to prevent postoperative delirium. Similarly, critical care medicine now operates with the appreciation of the profound risk to patients of prolonged mechanical ventilation, sedation, and immobilization and seeks to minimize each to reduce the risk of delirium, among other negative effects. The future of delirium prevention and management lies in both better implementation of best practices that have been defined over the last three decades as well as taking more of a whole patient view. This includes harnessing the electronic medical record, artificial intelligence, and so on to risk assess and individualize care for each patient; restructuring care to reduce deliriogenic practices and care environments; redefining what usual care looks like (e.g., utilizing music and involving loved ones, etc.); policy changes to change systematic priorities. In this paper, we will explore the past, present, and future of nonpharmacological prevention and management of delirium across care settings.

The Relationship between Delirium and Dementia

Delirium and dementia are common causes of cognitive impairment in older adults. They are distinct but interrelated. Delirium, an acute confusional state, has been linked to the chronic and progressive loss of cognitive ability seen in dementia. Individuals with dementia are at higher risk for delirium, and delirium itself is a risk factor for incident dementia. Additionally, delirium in individuals with dementia can hasten underlying cognitive decline. In this review, we summarize recent literature linking these conditions, including epidemiological, clinicopathological, neuroimaging, biomarker, and experimental evidence supporting the intersection between these conditions. Strategies for evaluation and diagnosis that focus on distinguishing delirium from dementia in clinical settings and recommendations for delirium prevention interventions for patients with dementia are presented. We also discuss studies that provide evidence that delirium may be a modifiable risk factor for dementia and consider the impact of delirium prevention interventions on long-term outcomes.

[Geriatric assessment goes digital-Possible applications in the emergency department setting]

The geriatric assessment is a basic requirement and a key quality parameter in geriatric care. An increasing number of older patients are presenting to emergency or central admission departments and discharge units in hospitals. For this reason, and in view of the time-critical decision-making requirements in this setting, digital applications of basic geriatric assessment data are becoming increasingly more important for the high-quality follow-up care of geriatric patients.

A nomogram for predicting the risk of postoperative delirium in individuals undergoing cardiovascular surgery

BACKGROUND AND PURPOSE

Delirium is a common mental disorder after adult cardiovascular surgery. Fifteen to 23% of patients undergoing cardiovascular surgery and cardiomyopathy experience delirium, and the efficacy of treatment interventions for delirium has been consistently unsatisfactory.

METHODS

A total of 729 patients who underwent cardiovascular surgery were randomly allocated into a training set and a validation set. A nomogram was developed using a logistic regression model to predict the incidence of delirium following cardiovascular surgery. The validity of the model was assessed by determining the receiver operating characteristic (ROC) curve, calculating the area under the ROC curve (AUROC), performing a calibration plot, and executing a decision curve analysis. This model was internally validated using the bootstrap method.

RESULTS

Postoperative delirium (POD) occurred in 165 cases (22.6%) among the 729 patients. Predictors included age, transient ischemic attack, length of preoperative stay, preoperative left ventricular injection fraction and N-terminal pro-B-type natriuretic peptide level, and intraoperative infusion of dexmedetomidine and human fibrinogen. The nomogram showed sufficient differentiation and calibration (AUROC = 0.754, 95% confidence interval = 0.703-0.804). The calibration graphs showed that the predictive values of the nomogram were in agreement with the actual values. The analysis of the training and validation sets suggested that the model possessed specific clinical significance.

CONCLUSIONS

In summary, the predictive model consists of seven factors that can roughly predict the occurrence of POD in patients who undergo cardiovascular surgery.

Pharmacologic Treatment Strategies for Delirium in Hospitalized Adults: Past, Present, and Future

Despite the use of multidomain prevention strategies, delirium still frequently occurs in hospitalized adults. With delirium often associated with undesirable symptoms and deleterious outcomes, including cognitive decline, treatment is important. Risk-factor reduction and the protocolized use of multidomain, nonpharmacologic bundles remain the mainstay of delirium treatment. There is a current lack of strong evidence to suggest any pharmacologic intervention to treat delirium will help resolve it faster, reduce its symptoms (other than agitation), facilitate hospital throughput, or improve post-hospital outcomes including long-term cognitive function. With the exception of dexmedetomidine as a treatment of severe delirium-associated agitation in the ICU, current practice guidelines do not recommend the routine use of any pharmacologic intervention to treat delirium in any hospital population. Future research should focus on identifying and evaluating new pharmacologic delirium treatment interventions and addressing key challenges and gaps surrounding delirium treatment research.

COVID-19-Associated Encephalopathy: A Case Series Demonstrating the Rapid Deterioration of Mental Status and a Review of the Literature

Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is known for its severe inflammatory response, often leading to multi-organ dysfunction. Among the less-recognized complications is COVID-19-associated encephalopathy, particularly in the elderly, where it contributes significantly to morbidity and mortality. This report explores the rapid neurocognitive decline observed in six hospitalized patients with COVID-19, with or without pre-existing neurological conditions. Each case highlights the challenges of managing complex clinical courses and emphasizes the importance of early, multidisciplinary intervention, including palliative care, to address the goals of care. Given the underreporting of COVID-19-associated encephalopathy, this case series underscores the need for increased awareness and specialized care to improve patient outcomes, particularly in older populations.

Effect of esketamine on postoperative delirium in general anesthesia patients undergoing elective surgery: a meta-analysis of randomized controlled trials

BACKGROUND

Postoperative delirium is a common neurological complication, especially in older patients undergoing surgery, which is closely related to the poor prognosis of patients. The objective was to investigate the effects of esketamine on postoperative delirium in patients with general anesthesia.

METHODS

The databases of PubMed, Embase, Cochrane Library and the Chinese National Knowledge Infrastructure were searched for all available randomised controlled trials on the effects of esketamine induction on postoperative delirium in patients undergoing elective general anesthesia from inception until April 21, 2024. We used RevMan5.4 software for data analysis. Dichotomous data was analyzed by risk ratios(RR) with a 95% confidence interval(CI), and continuous data by mean differences(MD). We also evaluated the risk of literature bias using the Cochrane Bias Risk Assessment tool.

RESULTS

We included a total of 17 randomized controlled trials, including 1286 patients undergoing elective general anesthesia. In 17 studies, esketamine significantly reduced the incidence of postoperative delirium (RR: 0.43; 95%CI: 0.33 ~ 0.57; p < 0.001). Five studies examined the incidence of postoperative adverse events (nausea, vomiting, dizziness and resporatory depression) and showed no statistically significant difference between the esketamine group and the control group (normal saline or dexmedetomidine) (RR: 0.82; 95%CI: 0.65 ~ 1.03; p = 0.08). In addition, this study found that the esketamine group had a lower incidence of hypotension (RR: 0.24; 95%CI: 0.12 ~ 0.48; p < 0.001) and a lower score on the visual analogue scale 24 h after surgery (MD: -0.44; 95%CI: -0.54 ~ -0.33; p < 0.001).

CONCLUSION

According to our meta-analysis, the use of esketamine during anesthesia induction significantly reduced the incidence of postoperative delirium in patients undergoing elective general anesthesia without increasing the incidence of postoperative adverse reactions.

Hospitalization and Hospitalized Delirium Are Associated With Decreased Access to Kidney Transplantation and Increased Risk of Waitlist Mortality

BACKGROUND

Kidney transplant (KT) candidates often experience hospitalizations, increasing their delirium risk. Hospitalizations and delirium are associated with worse post-KT outcomes, yet their relationship with pre-KT outcomes is less clear. Pre-KT delirium may worsen access to KT due to its negative impact on cognition and ability to maintain overall health.

METHODS

Using a prospective cohort of 2374 KT candidates evaluated at a single center (2009-2020), we abstracted hospitalizations and associated delirium records after listing via chart review. We evaluated associations between waitlist mortality and likelihood of KT with hospitalizations and hospitalized delirium using competing risk models and tested whether associations differed by gerontologic factors.

RESULTS

During a median of 1.8 years after listing, 735 (31.0%) candidates had ≥1 hospitalizations. Candidates with less education, frailty, depressive symptoms, and lower extremity function impairment were more likely to be hospitalized. Hospitalization was associated with higher waitlist mortality (aSHR = 3.65, 95% CI: 2.99-4.45) and a lower likelihood of KT (aSHR = 0.74, 95% CI: 0.66-0.84). Among candidates who were hospitalized, 80 (11%) had ≥1 delirium episodes. Candidates who were older, frail, and impaired in lower extremity function were more likely to have delirium, which was associated with higher waitlist mortality (aSHR = 4.87, 95% CI: 3.42-6.93) and a lower likelihood of KT (aSHR = 0.45, 95% CI: 0.27-0.74). The association between hospitalization and KT differed by candidate age (pinteraction < 0.001), with those aged ≥65 having a 61% lower likelihood of KT.

CONCLUSION

Hospitalization and delirium are associated with worse pre-KT outcomes and have serious implications on candidates' access to KT. Providers should work to reduce preventable instances of delirium.

Clear Minds: Unravelling Delirium in Older Adults

With an explosive population growth of older adults, the incidence rates of neuropsychiatric syndromes, particularly delirium, are increasing in the community and hospital settings. Delirium is an acute disturbance in cognition and attention that may signify a serious medical, life-threatening condition and may mimic psychiatric-mental health issues. Although its prevalence rate is lower in the community, delirium affects up to 87% of hospitalized older adults and can cost up to $152 billion each year. Despite its common occurrence, delirium is often undetected in 50% to 60% across all care settings, delaying treatment and resulting in poor patient outcomes, such as increased mortality, prolonged hospital stays, cognitive and functional impairment, decreased quality of life, and institutionalization. The current article addresses strategies to recognize delirium and presents evidence-based approaches and future considerations for delirium management. [Journal of Psychosocial Nursing and Mental Health Services, 62(11), 11-18.].

Delirium diagnostic tools in the postoperative setting: A scoping review protocol

BACKGROUND

Delirium is an acute and fluctuating disturbance in attention, awareness, and cognition, commonly observed in hospital settings, particularly among older adults, critically ill and surgical patients. Delirium poses significant challenges in patient care, leading to increased morbidity, mortality, prolonged hospital stays, and functional decline.

AIM

The aim of this review is to map existing evidence on delirium diagnostic tools suitable for use in patients treated surgically due to hip fracture, to inform clinical practice and enhance patient care protocols in the postoperative setting.

METHOD

We will conduct a scoping review on delirium diagnostic tools used for adult patients in the postoperative setting according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR). Eligibility criteria encompass all languages, publications dates, and study designs, with exception of case-reports. We will systematically search multiple databases and include unpublished trials, ensuring a comprehensive review based on a predefined protocol.

RESULTS

Results will be presented descriptively, with supplementary tables and graphs. Studies will be grouped by design, surgical specialties, and diagnostic tools to identify potential variations.

CONCLUSION

This scoping review will provide an overview of existing delirium diagnostic tools used in the postoperative setting and highlight knowledge-gaps to support future research. Due to the large number of patients affected by postoperative delirium, evidence mapping is much needed to facilitate evidence-based practice.

World delirium awareness and quality survey in 2023-a worldwide point prevalence study

BACKGROUND

Delirium, an acute brain dysfunction, is proposed to be highly prevalent in clinical care and shown to significantly increase the risk of mortality and dementia.

OBJECTIVES

To report on the global prevalence of clinically documented delirium and delirium-related clinical practices in wards caring for paediatric and adult patients in healthcare facilities.

DESIGN

A prospective, cross-sectional, 39-question survey completed on World Delirium Awareness Day, 15 March 2023.

PARTICIPANTS

Clinicians or researchers with access to clinical data.

MAIN OUTCOME AND MEASURE

The primary outcome was the prevalence of clinically documented delirium at 8:00 a.m. (4 h) and 8:00 p.m. (±4 h). Secondary outcomes included delirium-related care practices and barriers to use. Descriptive statistics were calculated and multilevel modelling was completed.

RESULTS

1664 wards submitted surveys from 44 countries, reporting on delirium assessments at 8:00 a.m. (n = 36 048) and 8:00 p.m. (n = 32 867); 61% reported use of validated delirium assessment tools. At 8:00 a.m., 18% (n = 2788/15 458) and at 8:00 p.m., 17.7% (n = 2454/13 860) were delirium positive. Top prevention measures were pain management (86.7%), mobilisation (81.4%) and adequate fluids (80.4%). Frequently reported pharmacologic interventions were benzodiazepines (52.7%) and haloperidol (46.2%). Top barriers included the shortage of staff (54.3%), lack of time to educate staff (48.6%) and missing knowledge about delirium (38%).

CONCLUSION AND RELEVANCE

In this study, approximately one out of five patients were reported as delirious. The reported high use of benzodiazepines needs further evaluation as it is not aligned with best-practice recommendations. Findings provide a benchmark for future quality improvement projects and research.