Acute confusion indicators: risk factors and prevalence using MDS data

Delirium in Nursing Home Residents: A Narrative Review

Delirium is an important component of the geriatric syndromes and has been recognized to negatively influence the prognosis of older people in hospital and in a post-acute setting. About 2–5% of older people world-wide live in nursing homes and are characterized by functional impairment, cognitive decline, dementia, comorbidities, and polypharmacotherapy, all factors which influence the development of delirium. However, in this setting, delirium remains often understudied. Therefore, in this narrative review, we aimed to describe the latest evidence regarding delirium screening tools, epidemiology characteristics, outcomes, risk factors, and preventions strategies in nursing homes.

Hydration Status of Assisted Living Memory Care Residents

Water intake and hydration status of assisted living memory care (ALMC) residents were evaluated. Thirty-two residents (eight men; mean age 86.5 years; Global Deterioration Scale [GDS] 3 to 7) from four ALMC units participated. Ingested food and fluid amount, type, and time, and ingestion behaviors were observed from 7:00 a.m. to 7:00 p.m. Related factors were obtained from chart review/participant survey. Mean fluid intake was 1,160.16 mL; mean water intake from food and fluid was 56.55% (SD = 23.4%) of recommended water intake (RWI). Only one participant met 100% RWI. Using osmolality laboratory results (available for 21 participants), five participants were hydrated, whereas eight (38.1%) participants were in impending dehydration and dehydration categories, respectively. Fluid intake, GDS, and level of assistance during meals predicted RWI. Water intake of ALMC residents is inadequate, placing them at risk for dehydration, and justifies development and implementation of care standards for increasing water intake. [Journal of Gerontological Nursing, 45(4), 21-29.].

Use of a Urine Color Chart to Monitor Hydration Status in Nursing Home Residents

To determine whether urine color, as measured by a color chart, might be a valid indicator of hydration status in frail nursing home residents, this study tested the associations between urine color and urine specific gravity. This is a descriptive correlational study set in seven nursing homes in eastern Iowa. Ninety-eight nursing home residents 65 years of age participated. Exclusion criteria for the study included: unstable congestive heart failure or diabetes, documented renal disease, hyponatremia (serum sodium < 135 meq/L), terminal illness, acutely confused/delirious or urinary tract infection at baseline, and gastrostomy-tube dependence. Weekly urine specimens were collected. Ucol was measured first, using a urine color chart. Usg was determined using the Chemstrip Mini UA Urine Analyzer. Week-by-week Spearman rank order correlations between urine color and specific gravity for the total sample (n = 98) ranged from rs = 0.3 - 0.7, p < .01; the PROC mixed model was significant, p < .01. In subgroup analyses (n = 78), all females (rs = 0.67, p = .01) and both males (rs = 0.53, p = .01) and females (rs = 0.72, p = .01) with adequate renal function (Cockcroft-Gault estimated creatinine clearance [CrCl] values of 50 ml/min) had significant associations between average urine color and average Usg. Females with mild renal impairment (CrCl between 30 and 50 ml/min) also had significant associations between Ucol and Usg (rs = .64, p < .01). Ucol averaged over several individual readings offers another tool in assessing hydration status in Caucasian nursing home residents with ade quate renal function measures by estimated CrCl values.

Risk for Acute Confusion in Sensory-Impaired, Rural, Long-Term-Care Elders

Acute confusion is a common geriatric syndrome in long-term care (LTC) elders with prevalence rates of 10% to 39%. Sensory impairment, specifically vision and hearing impairment, is even more common in LTC, with prevalence rates of 40% to 90%. The purpose of this study was to investigate the risk relationship between sensory impairment and the development of acute confusion in LTC elders. Each resident (N = 114) underwent sensory screening and then was followed for 28 days to monitor for the onset of acute confusion. Twenty residents (17.5%) developed acute confusion, 60 residents (52.6%) were found to be visually impaired, 49 (44.1%) were hearing impaired, and 28 (24.6%) were found to be dually impaired. Significant relationships between vision impairment, odds ratio (OR) = 3.67, confidence interval (CI) (1.13, 11.92), and dual sensory impairment, OR = 2.88, CI (1.04, 8.26), with the development of acute confusion were identified.

Keeping Nursing Home Residents Hydrated

The purpose of this research is to ascertain nursing home (NH) staffs’ perspectives of the problem of dehydration in NHs (skilled nursing facilities) and have them identify clinically practical interventions to ensure that NH residents consistently take adequate fluids. Four focus groups with 28 NH staff members in attendance are held in three NHs in metropolitan Los Angeles. The majority of participants are certified nursing assistants; however, licensed vocational nurses, registered nurses, and other NH staff also attend the groups. Content analytic techniques are used to analyze the data. Three themes emerge focusing on residents’ reasons for not drinking, signs and symptoms of dehydration, and strategies for improving hydration in NH residents. NH staff members identify the complexity of providing adequate hydration that was influenced by the resident’s relationship with family and NH staff and communication between staff members.

Pain and hospice care in nursing home residents with dementia and terminal cancer

AIM

One condition associated with severe end-of-life pain that can lead to a poor quality of death is cancer. Cancer pain in people with dementia is of particular concern because of communication problems that occur with worsening disease. The aim of the current pilot study was to examine the association between hospice enrolment, dementia severity and pain among nursing home residents who died from advanced cancer.

METHODS

Between-groups cross-sectional chart audits of 55 nursing home residents with dementia who died from cancer were carried out.

RESULTS

A total of 45% of residents were in hospice at the end-of-life. Residents in hospice were more likely to receive an opioid (80% vs 43%, P = 0.005); but less likely to show severe cognitive impairment (20% vs 50%, P = 0.050). Enrolment in hospice was associated with an increased likelihood of receiving an opioid after controlling for level of cognitive impairment (OR = 3.9, 95% CI = 1.1-14.0, P = 0.037). Lower levels of cognitive functioning were associated with a decreased likelihood of receiving an opioid after controlling for enrolment in hospice (OR = 0.3, 95% CI = 0.1-0.8, P = 0.030). Notably, 40% of nursing home residents with dementia who died from cancer did not receive any opioid during this time.

CONCLUSIONS

Preliminary results suggest that hospice enrolment might be influenced by the facility or region of this particular country. Hospice enrolment predicts more opioid pain treatment in residents with dementia and terminal cancer; however, no resident with very severe dementia and terminal cancer was placed in hospice care. Severely cognitively impaired nursing home residents requiring opioids are at great risk of suffering from untreated advanced cancer pain. New methods are urgently required to improve end-of-life palliative care for nursing home residents with terminal cancer and severe dementia.

Prevalence, presentation and prognosis of delirium in older people in the population, at home and in long term care: a review

OBJECTIVE

The aim of this study is to provide an overview of prevalence, symptoms, risk factors and prognosis of delirium in primary care and institutionalized long-term care.

DESIGN

The method used in this study is a systematic PubMed search and literature review.

RESULTS

The prevalence of delirium in the population among the elderly aged 65+ years is 1-2%. Prevalence rises with age: 10% among a "general" population aged 85+ years. Prevalence rises up to 22% in populations with higher percentages of demented elder. In long-term care, prevalence ranges between 1.4% and 70%, depending on diagnostic criteria and on the prevalence of dementia. There is a significant increase of the risk of delirium with age and cognitive decline in all groups. Concerning prognosis, most studies agree that older people who previously experienced delirium have a higher risk of dementia and a higher mortality rate. Population and long-term care studies show the same tendency.

CONCLUSIONS

Delirium in a non-selected population aged 65+ years is uncommon. However, prevalence rises very quickly in selected older groups. Primary care doctors should be aware of a relatively high risk of delirium among the elderly in long-term care, those older than 85 years and those with dementia.

Assessing advanced cancer pain in older adults with dementia at the end-of-life

AIM

To assess advanced cancer pain in older adults with dementia at the end-of-life.

BACKGROUND

Self-report is the gold standard for pain assessment; however, people with Alzheimer's disease may lose the ability to report pain. Biochemical and neuropathological changes occur in Alzheimer's disease that impairs the affective, sensory, and motor pain processing regions of the brain. Because people with severe Alzheimer's disease may lose the ability to report their sensory and emotional response to pain verbally, external motor displays of pain, such as grimacing, have been suggested for use in people with Alzheimer's disease.

DESIGN

Between groups cross sectional study.

METHOD

Retrospective chart audits of people with Alzheimer's disease in nine nursing homes in the US in 2009. Participants were nursing home residents (n = 48) with mild to very severe dementia, pain and cognitive measures were collected during the final 3 months of life. The primary outcome variable was the discomfort behaviour scale score (a measure of observed pain behaviour) and the main predictor variable was the cognitive performance scale score (a measure of Alzheimer's disease severity). Medication administration (opioid, non-narcotic, and psychotropic medications) recorded over the final 2 weeks of life was collected as a covariate of interest.

RESULTS

Alzheimer's disease severity was negatively associated with pain behaviours. Post hoc procedures showed that this difference was due to the difference in pain behaviours between individuals with moderate and very severe Alzheimer's disease. Total amount of opioid analgesic, total number of doses of non-narcotic medications, and psychotropic medications administered over the last 2 weeks of life were not statistically significantly correlated with pain behaviour. An inverse correlation was found between cognitive ability (Cognitive Performance Scale score) and total amount of opioid medication indicating that individuals with severe Alzheimer's disease received less opioid.

CONCLUSION

Because people with worsening Alzheimer's disease have fewer pain behaviours, assessing pain using behavioural indicators can be a challenge. Improving methods to assess for pain in people with Alzheimer's disease is of critical public health importance. Moreover, future studies are urgently needed to further examine the sensory, emotional, and behavioural responses to pain in people with Alzheimer's disease.

Twelve-month mortality among delirium subtypes

This study used data from the Delirium Among the Elderly in Rural Long-Term Care Facilities Study and data from the National Death Index (NDI) to examine mortality among 320 individuals. Individuals were grouped into noncases, subsyndromal cases, hypoactive delirium, hyperactive delirium, and mixed delirium on the basis of scoring using the Confusion Assessment Method (CAM), NEECHAM Scale, Mini-Mental State Examination (MMSE), Clinical Assessment of Confusion-A (CAC-A), and Vigilance A instruments. Risk ratios of mortality using "days of survival" did not reach statistical significance (α = .05) for any subgroup. Underlying cause of death (UCD) using International Classification of Disease, 10th version (ICD-10), showed typical UCD among older adults. There appeared to be clinical differences in UCD between delirium subgroups. Findings supported the conclusion that careful monitoring of patients with delirium and subsyndromal delirium is needed to avoid complications and injuries that could increase mortality.

The evaluation and management of delirium among older persons

This article reviews the pathophysiology, prevalence, incidence, and consequences of delirium, focusing on the evaluation of delirium, the published models of care for prevention in patients at risk of delirium, and management of patients for whom delirium is not preventable. Evidence on why physical restraints should not be used for patients with delirium is reviewed. Current available evidence on antipyschotics does not support the role for the general use in the treatment of delirium. An example of a restraint-free, nonpharmacologic management approach [called the TADA approach (tolerate, anticipate, and don't agitate)] is presented.

Detection of delirium and its symptoms by nurses working in a long term care facility

OBJECTIVE

To investigate the ability of nurses to recognize delirium and its symptoms and to investigate the factors associated with undetected delirium.

DESIGN

A prospective, observational study with repeated measurements over a 6-month period.

SETTING

Seven long term care settings in Montreal and Quebec City, Canada.

PARTICIPANTS

Residents aged 65 and older, with or without dementia, admitted to long term care (not respite care) and able to communicate in English or French.

MEASUREMENTS

Delirium and its symptoms were assessed using the Confusion Assessment Method. Ratings of delirium by nurses based on their observations during routine care were compared with delirium ratings by trained research assistants based on a one-time formal structured evaluation (Confusion Assessment Method and Mini Mental State Examination). This procedure was repeated for 10 delirium symptoms. Sensitivity, specificity, and positive and negative predictive values were calculated. The method of generalized estimating equations was used to identify factors associated with undetected delirium.

RESULTS

Research assistants identified delirium in 43 (21.3%) of the 202 residents. Nurses identified delirium in 51% of the cases identified by the research assistants. However, for cases without delirium according to the research assistants, nurses identified 90% of them correctly. Detection rates for delirium symptoms ranged from 25% to 66.7%. Undetected delirium was associated with lower number of depressive symptoms manifested by the resident.

CONCLUSION

Detection of delirium is a major issue for nurses. Strategies to improve nurse recognition of delirium could well reduce adverse outcomes for this vulnerable population.

[Risk factors contributing to insufficient water intake in elderly living in nursing homes and long-term care units: a review of the literature]

Elderly living in nursing homes and long-term care units are well-known to be vulnerable to dehydration. Insufficient water intake contributes to suboptimal hydration status and leads to decreased quality of life and global health status. Based on published studies, 32 to 96% of nursing home residents had insufficient water intake and more than 50% drank less than 1.5L per day. Risk factors contributing to decreased water intake in nursing home residents can be divided into two categories, depending whether they apply to the individuals per se (individual factors) or their social and institutional environment (environmental factors). Water intake is associated with meals and medication administration frequency. Diminished thirst sensation, intentional fluid restriction, dysphagia and functional dependency are individual factors recognized as most contributing to decreased water intake. Lack of familial support and insufficient staff are also important since they can contribute to decreased patients' assistance. Dietitians can play a fundamental role in preventing suboptimal hydration status by identifying risk factors that are known to compromise individual's water intake and by implementing corrective measures.

Measuring risk for dehydration in nursing home residents: evaluation of the dehydration risk appraisal checklist

The purpose of this study was to evaluate the ability of the Dehydration Risk Appraisal Checklist (DRAC) to measure dehydration risk in nursing home (NH) residents. The DRAC includes items concerning health conditions, medications, fluid intake behaviors, and laboratory abnormalities that have been identified in the literature as risk factors for dehydration. Principal component factor analysis, known group comparisons, and multiple logistic regression were used to evaluate the criterion-related validity and reliability of the DRAC. After reducing the number of items on the DRAC on the basis of a correlation matrix, a single-factor solution with moderate internal consistency was supported. Further validity analysis demonstrated that NH residents with higher urine-specific gravity scored higher than those who had lower specific gravity. The psychometric properties of the DRAC indicate that it has potential in determining dehydration risk in NH residents. Future refinement of the instrument is also discussed.

Delirium in care homes

Delirium is a distressing but preventable condition associated with increased morbidity and mortality, and significant financial costs. Most research on delirium has focused on high-risk patients in hospitals. Another group also at high risk are residents in care homes for older people. This report reviews the literature on the occurrence, aetiology, outcomes, prevention and treatment of delirium in long-term care. Delirium appears to be common in this setting, with a median point prevalence estimate of 14.2% in studies comparable to the UK. However, there is a paucity of high-quality studies, likely to reflect the difficulty in conducting research in this population and the particular challenges of investigating delirium. Addressing delirium successfully in care homes presents an opportunity to improve care standards and to reduce inequalities in health and social care. Well-designed prospective cohort studies and robust evaluations of interventions to prevent and treat delirium are needed.

The work of the RN Minimum Data Set coordinator in its organizational context

The Resident Assessment Instrument/Minimum Data Set (RAI/MDS) is the foundational clinical framework for nursing home care, functioning as both a clinical assessment instrument and an assessment process. An RN is mandated by statute to complete or coordinate the work associated with this framework. Using both focus groups and questionnaires, 24 RN MDS coordinators attending a national conference for MDS coordinators described their work in its organizational context. Shortell et al.'s continuous quality framework of structural, technical, cultural, and strategic organizational dimensions was used to categorize descriptive themes. Clinical implications of the study findings are summarized.

Predisposing factors associated with delirium among demented long-term care residents

This was a cross-sectional study to investigate predisposing factors associated with delirium among demented long-term-care residents and to assess the cumulative effect of these factors on the likelihood of having delirium. Of the 155 participants, 109 (70.3%) were found delirious according to the confusion assessment method. Among these individuals, age (OR = 1.07; 95% CI = 1.05-1.10) and severity of dementia (OR = 1.05; 95% CI = 1.03-1.07) were the most associated factors of delirium. The likelihood of being in delirium increased with the number of associated predisposing factors present (OR = 1.67; 95% CI = 1.11-2.51). Associated factors identified were level of functional autonomy, pain, depression, behavioral disturbances, number of medications, dehydration, fever, and malnutrition. Identification of predisposing factors will help nurses in detecting those residents in long-term care settings who are at high-risk for delirium, as well as in designing preventive intervention strategies for delirium, based on these factors.

Educating staff working in long-term care about delirium: the Trojan horse for improving quality of care?

OBJECTIVE

This study aimed to design a multicomponent intervention to improve delirium care in long-term care facilities for older people in the UK and to identify the levers and barriers to its implementation in practice.

METHODS

The research incorporated the theoretical phase and Phase 1 of the Medical Research Council's framework. We designed a multicomponent intervention based on the evidence for effective interventions for delirium and for changing practice. We refined the intervention with input from care home staff and field visits to homes. Our intervention incorporated the following features: targeting risk factors for delirium, a 'delirium practitioner' functioning as a facilitator, an education package for care home staff, staff working groups at each home to identify barriers to improving delirium care and to produce tailored solutions, a local champion identified from the working groups, consultation, liaison with other professionals, and audit or feedback. The delirium practitioner recorded her experiences of delivering the intervention in a contemporaneous log. This was analysed using framework analysis to determine the levers and barriers to implementation.

RESULTS

We introduced a multicomponent intervention for delirium in six care homes in Leeds. Levers to implementation included flexibility, tailoring training to staff needs, engendering pride and ownership amongst staff, and minimising extra work. Barriers included time constraints, poor organization, and communication problems.

CONCLUSION

We were able to design and deliver an evidence-based multicomponent intervention for delirium that was acceptable to staff. The next steps are to establish its feasibility and effectiveness in modifying outcomes for residents of care homes.

Understanding clinical dehydration and its treatment

Dehydration in clinical practice, as opposed to a physiological definition, refers to the loss of body water, with or without salt, at a rate greater than the body can replace it. We argue that the clinical definition for dehydration, ie, loss of total body water, addresses the medical needs of the patient most effectively. There are 2 types of dehydration, namely water loss dehydration (hyperosmolar, due either to increased sodium or glucose) and salt and water loss dehydration (hyponatremia). The diagnosis requires an appraisal of the patient and laboratory testing, clinical assessment, and knowledge of the patient's history. Long-term care facilities are reluctant to have practitioners make a diagnosis, in part because dehydration is a sentinel event thought to reflect poor care. Facilities should have an interdisciplinary educational focus on the prevention of dehydration in view of the poor outcomes associated with its development. We also argue that dehydration is rarely due to neglect from formal or informal caregivers, but rather results from a combination of physiological and disease processes. With the availability of recombinant hyaluronidase, subcutaneous infusion of fluids (hypodermoclysis) provides a better opportunity to treat mild to moderate dehydration in the nursing home and at home.

Implementation of the resident assessment instrument/minimum data set in the nursing home as organization: implications for quality improvement in RN clinical assessment

The Resident Assessment Instrument/Minimum Data Set (RAI/MDS) used in nursing homes (NHs) participating in the Federal Medicare and Medicaid programs is a state-of-the-art, computerized clinical assessment instrument. RAI/MDS-derived data are essential, used for NH reimbursement, quality measurement, regulatory quality monitoring activities, and clinical care planning. Completing or coordinating the RAI/MDS, which may be conceived of as implementation, is a federally mandated responsibility of the RN involving clinical assessment, a core professional competency of any RN. How the RAI/MDS is implemented in each NH provides evidence of how each NH as an organization understands both the RAI/MDS process and its organizational level responsibility for promotion of RN competence in clinical assessment. Research literature related to RAI/MDS development, testing, and accuracy is used to identify what is known about organizational level implementation of the RAI/MDS. Evidence-based suggestions to enhance RN competence in RAI/MDS clinical assessments, given existing organizational barriers, are provided.

Delirium in Older Adults With Cancer: Implications for Practice and Research

PURPOSE/OBJECTIVES

To provide a comprehensive review of the literature and existing evidence-based findings on delirium in older adults with cancer.

DATA SOURCES

Published articles, guidelines, and textbooks.

DATA SYNTHESIS

Although delirium generally is recognized as a common geriatric syndrome, a paucity of empirical evidence exists to guide early recognition and treatment of this sequelae of cancer and its treatment in older adults. Delirium probably is more prevalent than citations note because the phenomenon is under-recognized in clinical practice across varied settings of cancer care.

CONCLUSIONS

Extensive research is needed to formulate clinical guidelines to manage delirium. A focus on delirium in acute care and at the end of life precludes identification of this symptom in ambulatory care, where most cancer therapies are used. Particular emphasis should address the early recognition of prodromal signs of delirium to reduce symptom severity.

IMPLICATIONS FOR NURSING

Ongoing assessment opportunities and close proximity to patients' treatment experiences foster oncology nurses' mastery of this common exemplar of altered cognition in older adults with cancer. Increasing awareness of and knowledge delineating characteristics of delirium in older patients with cancer can promote early recognition, optimum treatment, and minimization of untoward consequences associated with the historically ignored example of symptom distress.

Oral Hydration in Older Adults

Maintaining adequate fluid balance is an essential component of health at every stage of life. Age-related changes make older adults more vulnerable to shifts in water balance that can result in overhydration or, more frequently, dehydration. This article reviews age-related changes, risk factors, assessment measures, and nursing interventions for dehydration.

Delirium in Postacute and Long-term Care

Delirium is a classic geriatric syndrome that occurs commonly among the frail elders who make up many of the residents in postacute and long-term care facilities. The prevalence of the disorder in these settings may be increasing as a result of the pressure to reduce hospital length of stay. Clinicians often do not recognize when patients in their care are delirious, but simple and practical means exist to allow its diagnosis. Those who practice in long-term care must be knowledgeable about the risk factors for the disorder, as well as how to recognize, diagnose, prevent, and treat it.

Nurse practitioners' and physicians' care activities and clinical outcomes with an inpatient geriatric population

OBJECTIVE

Less is known about nurse practitioners' (NPs') effectiveness in acute care than about their effectiveness in outpatient settings. This study investigated care activities and clinical outcomes for hospitalized geriatric patients treated by NPs compared with those treated by intern and resident physicians.

DATA SOURCES

A descriptive comparative research design involved random selection of 100 inpatient geriatric patients and a convenience sample of 17 professional providers who staffed three hospital units. A 1-month study period produced retrospective and prospective data for analysis.

CONCLUSIONS

Self-reports concerning 10 primary activity categories indicated that NPs spent a higher percentage of time doing progress notes and care planning than did physicians (28% versus 15%, p = .011) and that physicians spent more time on literature reviews (5% versus 1%, p = .008). When prioritizing care activities, NPs ranked advance directive discussion higher than did physicians (2nd versus 7th, p = .036), a difference confirmed by medical record documentation. Physicians were more attentive to functional status (1st versus 3rd, p = .023), but medical record documentation showed NPs to be more attentive to physical and occupational therapy referrals (p = .001). Analysis of 13 independent organ areas revealed that NPs cared for more musculoskeletal (p = .036) and psychiatric (p = .005) problems. Physicians cared for more cardiac patients (p = .001). NPs' patients were older (p = .022) and sicker at admission (p < .001) and discharge (p < .001). Charges per length of stay were lower (p < .001) for the physician provider group, and patients in that group had shorter stays (p < .001). Readmission and mortality rates were similar.

IMPLICATIONS FOR PRACTICE

NPs provide effective care to hospitalized geriatric patients, particularly to those who are older and sicker.

Bioelectrical impedance analysis and other hydration parameters as risk factors for delirium in rural nursing home residents

BACKGROUND

The study investigators conducted a vigorous screening protocol for delirium in rural long-term care (LTC) facilities for a period of 28 days focusing on Bioelectrical Impedance Analysis (BIA) and other hydration parameters as risk factors.

METHODS

A two-stage cluster sampling procedure was used to randomly select participants (n = 313) from 13 LTC facilities located in southeastern Iowa, stratified on facility bed size. BIA was used to estimate intracellular water (ICW), extracellular water (ECW), and total body water (TBW) on four occasions--baseline and follow-up days 7, 14, and 28. Volume estimates were calculated as a percent of body weight (%WT). Serum electrolytes and hematology were also measured. Delirium was measured with four strict criteria: a NEECHAM Confusion Scale score < 25, Vigilance "A" score > 2, a Mini-Mental Status Examination < baseline, and a positive Confusion Assessment Method score.

RESULTS

There were n = 69 delirium cases (22.0%). Blood urea nitrogen/creatinine ratios greater than 21:1 (odds ratio = 1.76, 95% confidence interval 1.02-3.06). No significant risk for delirium was associated with ICW, ECW, or TBW as a percent of body weight.

CONCLUSIONS

Some changes were observed with a slight decrease in ICW between day 7 and day 14 of follow-up that tended to follow an increase in delirium events, but in general the BIA measures did not predict delirium events.

Performance improvement in the long-term-care setting: building on the foundation of infection control

Infection control programs were among the first organized efforts to improve the quality of healthcare delivered to patients and are an excellent model for the development of other healthcare performance improvement activities. Whether labeled as infection control, quality improvement, or patient safety, performance improvement initiatives share similar methods and principles. The quality of care in long-term-care facilities (LTCFs) has been scrutinized for years and has received renewed attention with the recent initiation of public reporting of quality measures by Medicare. This article reviews the principles of performance improvement, discusses the importance of employing evidence-based interventions, and emphasizes the value of local performance improvement in LTCFs. Residents of LTCFs remain at high risk for the development of nosocomial infections, and among performance improvement initiatives, infection control is recommended as a high priority for all LTCFs. Fortunately, infection control contains the essential elements for performance improvement, and a successful infection control program can provide the foundation for expanding performance improvement throughout the LTCF. There is still much that needs to be done to determine the best clinical practices for LTCFs, and this should remain a priority for future research. Furthermore, efforts should continue to apply these principles at the local level to ensure that all residents of LTCFs receive the best care possible.

Predicting post-surgical cognitive disturbance in older Taiwanese patients

The purpose of this study was to test a theoretical model to understand the influences of six predicting variables in post-surgical cognitive disturbance in older Taiwanese patients after elective surgery. The data were collected in a medical center in Taipei, Taiwan. Ninety-three patients were included in the final analysis. The findings showed that cognitive function at admission (beta=0.50, p<0.001), physical function at admission (beta=-0.34, p<0.001), and physiological stability (beta=-0.21, p<0.01) had direct effects on post-surgical cognitive disturbance. Physical function and cognitive function at admission also affected post-surgical cognitive disturbance indirectly through physiological stability. These variables accounted for 67% of the total variance of post-surgical cognitive disturbance. The findings from this study suggest that a careful and systematic assessment of the patient's condition at the time of admission is important. It is necessary to monitor and correct these variables at admission or before surgery to prevent or reduce the impact of post-operative delirium. It is also necessary to monitor these variables during the hospital stay to help nurses to distinguish the etiology of delirium. In each case, knowing when confusion is more likely to occur can assist in focusing more appropriate and effective efforts at detection, thereby reducing the consequences associated with confusion.

Reducing hydration-linked events in nursing home residents

The authors used a quasi-experimental treatment and control group design with 49 participants from four nursing homes to test the effectiveness of an 8-week hydration intervention in reducing hydration-linked events (HLEs). A Kaplan Meier survival curve with log rank test was calculated to determine incidence and time to occurrence of a HLE. Incidence of and time to a HLE did not differ between the treatment and control groups over an 8-week period (p > .05). However, treatment group participants were found to be more frail, more cognitively impaired and more at risk for acute confusion than the control group participants. Although there were no statistically significant differences between the groups, it is clinically significant that the frailer, more at-risk participants in the treatment group had a lower incidence of HLEs.

Postoperative cognitive changes among older Taiwanese patients

The purpose of the study was to describe variations in cognitive/behavioural changes during the course of delirium among older Taiwanese patients after elective surgery. A total of 106 patients assessed four times (admission, onset of delirium, delirium day 3 and delirium day 5) by the Mini Mental State Examination (MMSE) were included in the analysis to understand the neurocognitive/behaviour change during the course of delirium. Repeated measures anova was used to analyse within-subject differences across these four time points for those who became delirious and those who did not. The findings showed that patients who experienced delirium had significantly (P < 0.01) lower MMSE scores than non-delirious patients. Scores for the delirious group were also significantly different across the four assessments (P < 0.01) within the group. The subscales of orientation to time, orientation to place, registration and recall were the major changes from time 1 (admission assessment) to time 2 (onset of delirium) for delirious patients. When scores for time 4 (delirium day 5) and time 1 (admission assessment) were compared, the subscales of orientation to time, orientation to place and visual construction showed the least improvement among the subscales at time 4. The findings of the study suggest that mental status assessments are important during the patient's admission and hospital stay. The repeated assessments can be incorporated into routine nursing care so that problems can be detected and appropriate nursing care implemented.

Clinical profile of acute confusion in the long-term care setting

Aspects of acute confusion (AC) including risk factors, behavior patterns, and outcomes are not well documented in long-term care (LTC) residents. The purpose of this prospective study was to describe the clinical profile of AC in LTC including risk factors, behavior patterns, etiologies, and 3-month outcomes. Seventy-four elderly LTC residents were assessed for AC, depression, and global cognitive impairment. Risk factors associated with AC included hearing deficits, depression, pulmonary disorders, and abnormal serum sodium or potassium levels. Behavior patterns of acutely confused residents included hyperactive (n = 9, 31%), hypoactive (n = 8, 28%), and mixed (n = 7, 24%). In the majority of the AC cases, the etiology was multIfactorial infections and dehydration were the most common causes. Residents with AC had very poor 3-month outcomes. Thirty-four percent (n = 10) of the residents with AC died within 3 months of the evaluation. This study highlights the complexity and serious nature of AC in this frail population.

Hydration and acute confusion in long-term care residents

Although it is generally appropriate for a healthy adult to consume 2000 to 2500 ml per day, the literature does not address evaluating any standard. The objective here was to develop a weight-based hydration management intervention and evaluate the impact of this on the incidence of acute confusion (AC) using an N = 98. The intervention consisted of a fluid intake goal based on 100 ml per kg for the first 10 kg, 50 ml/kg for the next 10 kg, and 15 ml for the remaining body weight. The treatment group received instruction and assistance on the fluid goal and the control group received routine care. Measurements included serum electrolytes, bioimpedance analysis, urinalysis, Mini-Mental State Exam, and the NEECHAM. There was no difference in the incidence of AC between treatment and controls, but those individuals with > or = 90% compliance demonstrated higher ECF volumes and also lower urine leukocyte counts.

Delirium superimposed on dementia: a systematic review

Delirium in a patient with preexisting dementia is a common problem that may have serious complications and poor prognostic implications. The purpose of this paper was to conduct a systematic review of the medical literature on delirium superimposed on dementia, specifically to review studies on prevalence, associated features, outcomes, and management. Areas of controversy and gaps in our knowledge of this problem are highlighted. Finally, an agenda for future research is proposed. Fourteen studies were reviewed, including seven prospective studies, three retrospective studies, two cross-sectional studies, and two clinical trials. For the review of the literature on delirium superimposed on dementia, we searched MEDLINE from January 1966 through February 2002 for research studies with primary sources of data. Selection criteria for inclusion of articles in this study were inclusion of data on subjects with delirium superimposed on dementia, inclusion of a validated operational definition/measures of dementia and delirium, actual data on persons with delirium and dementia reported in the paper, and reporting of primary data. MEDLINE was searched using the following key search terms: delirium, acute confusion, cognitive impairment, Alzheimer's disease, dementia, delirium superimposed on dementia, and elderly. The prevalence of delirium superimposed on dementia ranged from 22% to 89% of hospitalized and community populations aged 65 and older with dementia. To date, only one reported study systematically identified associated factors and interventions for delirium superimposed on dementia, but several studies examining outcomes have found that adverse events are associated with delirium in persons with dementia, including accelerated and long-term cognitive and functional decline, need for institutionalization, rehospitalization, and increased mortality. This paper highlights the dearth of research on delirium superimposed on dementia and stresses the importance of early recognition and prevention of delirium in persons with dementia.

Four acute confusion assessment instruments: reliability and validity for use in long-term care facilities

Frail older adults in long-term care (LTC) facilities are at high risk for acute confusion. This study evaluated the reliability and validity of four acute confusion instruments for use in LTC: the Clinical Assessment of Confusion-A (CAC-A), the Clinical Assessment of Confusion-B (CAC-B), the NEECHAM Confusion Scale (NEECHAM), and the Visual Analog Scale for Acute Confusion (VASAC). Seventy-four residents from two LTC facilities were evaluated for acute confusion using the four instruments as well as the Mini-Mental Status Examination (MMSE), the Geriatric Depression Scale (GDS), and Diagnostic and Statistical Manual for Mental Disorders (DSM IV) criteria for delirium. Coefficient alphas were .82 for the CAC-A, .86 for the CAC-B, and .80 for the NEECHAM. Interrater reliability on 30 paired evaluations was .90 for the CAC-B, .87 for the NEECHAM, and .80 for the VAS-AC. All instruments were correlated with the MMSE and the DSM IV criteria for delirium at the p < .001 level. Predictive validity was supported for the CAC-B, the NEECHAM, and the VAS-AC. Discriminant validity using the GDS was supported for the VAS-AC. Construct validity using confirmatory factor analysis was supported for the NEECHAM, with a two-factor structure. Based on this study, the VAS-AC is recommended for use as a general screening instrument and when it is positive for acute confusion, the NEECHAM should be used for a more indepth assessment.

Studying acute confusion in long-term care: clinical investigation or secondary data analysis using the minimum data set?

Clinical investigations of acute confusion have largely been initiated in the acute care setting, where no uniform patient assessment exists. No reliable estimates of the prevalence of acute confusion in long-term care (LTC) residents have been reported. Delirium indicators are present in the nursing home Minimum Data Set (MDS), suggesting that MDS assessments could be used to facilitate studies of acute confusion in LTC. Methods to study acute confusion in LTC are discussed, with an emphasis on the advantages and disadvantages of using secondary analysis of MDS assessments as one research strategy.

Delirium in elderly patients: an overview of the state of the science

Delirium is a common and potentially preventable and reversible cause of functional disability, morbidity, mortality, and increased health care use among elderly individuals. Much has been learned about delirium in the past decade. Highlighted in this article are recent advances in the diagnosis of delirium, delirium in long-term care, use of health care resources, outcomes of delirium, etiologies, and interventions to prevent and treat delirium. Suggestions for future research also are proposed.

Acute confusion/delirium protocol

This abbreviated version of the Acute Confusion/Delirium Research-Based protocol provides clinical guidelines for the assessment and management of acute confusion/delirium in the elderly individual. A screening and ongoing surveillance program that is based on identified risk factors is recommended to prevent or minimize episodes of acute confusion in this age group. This protocol is part of a series of protocols developed to help clinicians use the best evidence available in the care of older adults.