Characteristics of Nursing Home Resident Movement Patterns: Results from the TEAM-UP Trial.

OBJECTIVE: To determine movement patterns of nursing home residents, specifically those with dementia or obesity, to improve repositioning approaches to pressure injury (PrI) prevention. METHODS: A descriptive exploratory study was conducted using secondary data from the Turn Everyone And Move for Ulcer Prevention (TEAM-UP) clinical trial examining PrI prevention repositioning intervals. K-means cluster analysis used the average of each resident's multiple days' observations of four summary mean daily variables to create homogeneous movement pattern clusters. Growth mixture models examined movement pattern changes over time. Logistic regression analyses predicted resident and nursing home cluster group membership. RESULTS: Three optimal clusters partitioned 913 residents into mutually exclusive groups with significantly different upright and lying patterns. The models indicated stable movement pattern trajectories across the 28-day intervention period. Cluster profiles were not differentiated by residents with dementia (n = 450) or obesity (n = 285) diagnosis; significant cluster differences were associated with age and Braden Scale total scores or risk categories. Within clusters 2 and 3, residents with dementia were older (P < .0001) and, in cluster 2, were also at greater PrI risk (P < .0001) compared with residents with obesity; neither group differed in cluster 1. CONCLUSIONS: Study results determined three movement pattern clusters and advanced understanding of the effects of dementia and obesity on movement with the potential to improve repositioning protocols for more effective PrI prevention. Lying and upright position frequencies and durations provide foundational knowledge to support tailoring of PrI prevention interventions despite few significant differences in repositioning patterns for residents with dementia or obesity.

Intraindividual Changes in Ambulation Associated With Falls in a Population of Vulnerable Older Adults in Long-Term Care.

OBJECTIVE: To examine how intraindividual changes in ambulation characteristics may be used to predict falls. DESIGN: Longitudinal study design. SETTING: Assisted living facility. PARTICIPANTS: Ambulatory older adults (N=26; mean age, 79y). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Continuous measure of average weekly ambulation characteristics (time and distance walked, speed, path measures [eg, path time and distance, number of paths (where a path is at least 60s of uninterrupted walking separated by at least a 30-s stop)]), accounting for weekly changes in these ambulation characteristics on an individual level over time along with falls (yes/no) and cognitive impairment (CI) (measured by the Montreal Cognitive Assessment). RESULTS: In hierarchical linear models accounting for intraindividual changes in ambulation characteristics over the 8-month course of the study and level of CI, path distance (odds ratio, 1.02; P≤.001) was associated with an increased risk of a fall. In the short-term, intraindividual changes in path distance were associated with a fall within the 4-week interval the change was noted. Path distance had fair sensitivity (.74) and specificity (.66) to a fall (area under the curve, .70). CONCLUSIONS: Study findings suggest that falls may have specific predictors, specifically that older adults with CI are more likely to fall when walking continuously with little/no breaks. Interventions focused on reducing path-associated fatigue may effectively reduce fall incidence in this population.

Patterns of Disruptive Feeding Behaviors in Infants With Neonatal Abstinence Syndrome.

BACKGROUND: Severe irritability in infants with neonatal abstinence syndrome often impacts their ability to feed successfully, which challenges a mother's ability to demonstrate this most basic parenting skill. There is little empiric evidence to guide recommendations for practice in this population. PURPOSE: Describe the infant behaviors that disrupt feeding in infants with neonatal abstinence syndrome. METHODS: A mixed-method approach was used to describe digitally recorded infant feeding behaviors. Qualitative methodology was first used to identify categories of behaviors during the feeding. The categories were used as a coding scheme to identify the temporal sequence, duration, and frequency of behaviors observed during a feeding. RESULTS: The behavior categories that disrupted feeding were identified as fussing, resting, crying, and sleeping/sedated. Infants spent almost twice as much time in fussing as in feeding. The majority of the infants were fussing between 1 and 11 minutes during the feeding, and fussing disrupted feeding in every subject at least once. Feeding behavior occurred only 24% of the time, while fussing and crying occurred 51%. Fussing was the primary transitional behavior from one category to another. Infants who did not complete their feeding had nearly twice the mean number of fussing episodes as those who completed their feeding. IMPLICATIONS FOR PRACTICE: Fussing is a transitional state and appears to provide an opportunity to test interventions that help the mothers re-engage their infants in feeding. The frequency of the behavioral transitions provides a measure of irritability that has not been previously described in this population. IMPLICATIONS FOR RESEARCH: Additional study is needed to evaluate the impact and contributions of maternal behaviors and external variables on infant behavioral transition.

Nurses' experiences of communicating with hospitalized, suddenly speechless patients.

We used a qualitative focus group design to explore the experiences and challenges of nurses who work with hospitalized patients experiencing the sudden inability to verbalize their needs, also known as sudden speechlessness. In response to open-ended questions in facilitated focus groups, 18 nurses discussed issues around the care and communication needs of suddenly speechless (SS) patients. Nurses identified multiple, commonly occurring communication challenges when caring for SS patients. They believed these challenges led to poorer recognition of patient needs, with the potential for compromised patient care. Nurses described how the lack of reliable strategies to facilitate communication sometimes resulted in negative patient outcomes, including unmet psychosocial needs and the potential that informed consent and educational issues were being inadequately addressed for the SS patients. Even experienced nurses indicated ongoing problems in communicating with SS patients, despite using a multitude of strategies, leaving many to deal with issues of frustration and role conflict.

Greater night-to-night variability in sleep discrepancy among older adults with a sleep complaint compared to noncomplaining older adults.

Research in younger adults suggests sleep discrepancy (objective/subjective measurement difference) is a consistent pattern that primarily occurs within individuals with insomnia. To examine whether older adults exhibit a similar pattern, this study compared night-to-night inconsistency in sleep discrepancy between older adults with and without sleep complaints. Older adults (N = 103; mean age = 72.81, SD = 7.12) wore an Actiwatch-L® (24 hr per day) and concurrently completed sleep diaries for 14 days. Sleep discrepancy = diary (sleep onset latency [SOL] or wake [time] after sleep onset [WASO]) - actigraphy (SOL or WASO). Both groups exhibited sleep discrepancy, but complainers exhibited significantly more night-to-night variability. Sleep discrepancy was a variable behavior that was not limited to insomnia, but instead manifested by degree throughout our older sample. Greater attention to variability in sleep research and clinical practice is warranted.

Nurse entrepreneurs, arise!: improving lives of older adults by bringing your ideas to market.

Many functions that nurses carry out require the use of various technologies, yet nurses are rarely involved in the development and/or testing of technology. The purpose of this article is to provide an introduction to the world of technology development to help nurses understand how to become involved in this endeavor. An illustration of a newly developed technology will be used to further clarify the steps.

Noticing Acute Changes in Health in Long-Term Care Residents.

PURPOSE: Early signs of acute conditions and increased fall risk often go unrecognized in patients in long-term care facilities. The aim of this study was to examine how healthcare staff identify and act on changes in health status in this patient population. DESIGN: A qualitative study design was used for this study. METHODS: Six focus groups across two Department of Veterans Affairs long-term care facilities were conducted with 26 interdisciplinary healthcare staff members. Using thematic content analysis, the team preliminarily coded based on interview questions, reviewed and discussed emerging themes, and agreed on the resultant coding scheme for each category with additional independent scientist review. RESULTS: Themes included describing and explaining how "normal" or expected behavior is identified by staff, noticing changes in a resident, determining the significance of the change, hypothesizing reasons for an observed change, response to an observed change, and resolution of the clinical change. CONCLUSIONS: Despite limited training in formal assessment methods, long-term care staff have developed methods to conduct ongoing assessments of the residents. This technique, individual phenotyping, often identifies acute changes; however, the lack of formal methods, language, or tools to communicate the changes means that these assessments are not often formalized in a manner that informs the residents' changing care needs. CLINICAL RELEVANCE TO THE PRACTICE OF REHABILITATION NURSING: More formal objective measures of health change are needed to assist long-term care staff in expressing and interpreting the subjective phenotype changes into objective, easily communicated health status changes. This is particularly important for acute health changes and impending falls, both of which are associated with acute hospitalization.

Development and Initial Evaluation of Web-Based Cognitive Behavioral Therapy for Insomnia in Rural Family Caregivers of People With Dementia (NiteCAPP): Mixed Methods Study.

BACKGROUND: Informal caregivers of people with dementia frequently experience chronic insomnia, contributing to stress and poor health outcomes. Rural caregivers are particularly vulnerable but have limited access to cognitive behavioral therapy for insomnia (CBT-I), a recommended frontline treatment for chronic insomnia. Web-based delivery promises to improve insomnia, particularly for rural caregivers who have limited access to traditional in-person treatments. Our team translated an efficacious 4-session standard CBT-I content protocol into digital format to create NiteCAPP. OBJECTIVE: This study aimed to (1) adapt NiteCAPP for dementia caregivers to create NiteCAPP CARES, a tailored digital format with standard CBT-I content plus caregiver-focused modifications; (2) conduct usability testing and evaluate acceptability of NiteCAPP CARES' content and features; and (3) pilot-test the adapted intervention to evaluate feasibility and preliminary effects on sleep and related health outcomes. METHODS: We followed Medical Research Council recommendations for evaluating complex medical interventions to explore user needs and adapt and validate content using a stepwise approach: (1) a rural dementia caregiver (n=5) and primary care provider (n=5) advisory panel gave feedback that was used to adapt NiteCAPP; (2) caregiver (n=5) and primary care provider (n=7) focus groups reviewed the newly adapted NiteCAPP CARES and provided feedback that guided further adaptations; and (3) NiteCAPP CARES was pilot-tested in caregivers (n=5) for feasibility and to establish preliminary effects. Self-report usability measures were collected following intervention. Before and after treatment, 14 daily electronic sleep diaries and questionnaires were collected to evaluate arousal, health, mood, burden, subjective cognition, and interpersonal processes. RESULTS: The stepped approach provided user and expert feedback on satisfaction, usefulness, and content, resulting in a new digital CBT-I tailored for rural dementia caregivers: NiteCAPP CARES. The advisory panel recommended streamlining content, eliminating jargon, and including caregiver-focused content. Focus groups gave NiteCAPP CARES high usefulness ratings (mean score 4.4, SD 0.79, scored from 1=least to 5=most favorable; score range 4.2-4.8). Multiple features were evaluated positively, including the intervention's comprehensive and engaging information, caregiver focus, good layout, easy-to-access intervention material, and easy-to-understand sleep graphs. Suggestions for improvement included the provision of day and night viewing options, collapsible text, font size options, tabbed access to videos, and a glossary of terms. Pilot-test users rated usefulness (mean score 4.3, SD 0.83; range 4.1-4.5) and satisfaction (mean score 8.4, SD 1.41, scored from 1=least to 10=most satisfied; range 7.4-9.0) highly. Preliminary effects on caregiver sleep, arousal, health, mood, burden, cognition, and interpersonal processes (all P<.05) were promising. CONCLUSIONS: Adaptations made to standard digital CBT-I created a feasible, tailored digital intervention for rural dementia caregivers. Important next steps include further examination of feasibility and efficacy in a randomized controlled trial with an active control condition, a multisite effectiveness trial, and eventual broad dissemination. TRIAL REGISTRATION: ClinicalTrials.gov NCT04632628; https://clinicaltrials.gov/ct2/show/NCT04632628.

Enhancing Braden pressure ulcer risk assessment in acutely ill adult veterans.

This study sought to determine if a parsimonious pressure ulcer (PU) predictive model could be identified specific to acute care to enhance the current PU risk assessment tool (Braden Scale) utilized within veteran facilities. Factors investigated include: diagnosis of gangrene, anemia, diabetes, malnutrition, osteomyelitis, pneumonia/pneumonitis, septicemia, candidiasis, bacterial skin infection, device/implant/graft complications, urinary tract infection, paralysis, senility, respiratory failure, acute renal failure, cerebrovascular accident, or congestive heart failure during hospitalization; patient's age, race, smoking status, history of previous PU, surgery, hours in surgery; length of hospitalization, and intensive care unit days. Retrospective chart review and logistic regression analyses were used to examine Braden scores and other risk factors in 213 acutely ill veterans in North Florida with (n = 100) and without (n = 113) incident PU from January-July 2008. Findings indicate four medical factors (malnutrition, pneumonia/pneumonitis, candidiasis, and surgery) have stronger predictive value (sensitivity 83%, specificity 72%, area under receiver operating characteristic [ROC] curve 0.82) for predicting PUs in acutely ill veterans than Braden Scale total scores alone (sensitivity 65%, specificity 70%, area under ROC curve 0.70). In addition, accounting for four medical factors plus two Braden subscores (activity and friction) demonstrates better overall model performance (sensitivity 80%, specificity 76%, area under ROC curve 0.88).

Nighttime activity in individuals with dementia: understanding the problem and identifying solutions.

Sleep disturbances may occur in more than 50% of individuals with dementia, and nighttime activity can lead to unsafe situations and serious consequences for both the person and his or her caregivers. Nighttime awakenings expose individuals with dementia to two major dangers: falls and unattended home exits. This article is a review of the current research on the causes of sleep disturbances and interventions for nighttime activity in individuals with dementia living at home.

Using Telehealth to Deliver Cognitive Behavioral Treatment of Insomnia to a Caregiver of a Person With Alzheimer's Disease.

Cognitive behavioral therapy for Insomnia (CBT-I) is the gold standard treatment for insomnia. There is limited access to qualified providers to deliver CBT-I; moreover, there are patient populations who struggle with access to insomnia care due to limited time and resources. This includes caregivers for persons with Alzheimer's disease, for whom sleep disturbance is a common concern. Utilizing telehealth to deliver CBT-I may be particularly important for vulnerable populations such as caregivers of persons with dementia, as it can offer an accessible, safe, and cost-effective treatment option that can be tailored to meet the needs of a specific population. This case study illustrates the successful implementation of a four-session CBT-I protocol through telehealth with a caregiver of a person with Alzheimer's disease. Given the success of this case and the conditions for psychological care the recent pandemic has created, continued research into the efficacy of sleep-related interventions through telehealth is warranted.

Cognitive Function and Sleep in Caregivers of Persons Living with Dementia.

Poor sleep is prevalent among caregivers of persons living with dementia and increases their risk for cognitive impairment and decline. In this cross-sectional, correlational study, we compared the cognitive function scores of caregivers with poor sleep with the demographically adjusted normed scores of the National Institutes of Health Toolbox Cognition Battery. Caregivers completed a 14-day sleep diary. On average, caregivers (n = 28) were 65.14 (±10.08) years, female, and White. Their average crystallized cognitive function composite score was significantly higher and their average fluid cognitive function composite score was significantly lower than the normative scores. Caregivers performed significantly worse on the processing speed domain measure. Poor sleep may affect how caregivers, including highly educated caregivers, process and respond to information, thus can influence how they safely perform complex caregiving tasks. Health care providers should consistently assess caregivers' sleep and cognitive abilities to promptly identify changes and provide timely interventions.

Impact of Web-Based Cognitive Behavioral Therapy for Insomnia on Stress, Health, Mood, Cognitive, Inflammatory, and Neurodegenerative Outcomes in Rural Dementia Caregivers: Protocol for the NiteCAPP CARES and NiteCAPP SHARES Randomized Controlled Trial.

BACKGROUND: Chronic insomnia affects up to 63% of family dementia caregivers. Research suggests that chronic insomnia prompts changes in central stress processing that have downstream negative effects on health and mood, as well as on cognitive, inflammatory, and neurodegenerative functioning. We hypothesize that cognitive behavioral therapy for insomnia (CBT-I) will reverse those downstream effects by improving insomnia and restoring healthy central stress processing. Rural caregivers are particularly vulnerable, but they have limited access to CBT-I; therefore, we developed an accessible digital version using community input (NiteCAPP CARES). OBJECTIVE: This trial will evaluate the acceptability, feasibility, and short-term and long-term effects of NiteCAPP CARES on the sleep and stress mechanisms underlying poor caregiver health and functioning. METHODS: Dyads (n=100) consisting of caregivers with chronic insomnia and their coresiding persons with dementia will be recruited from Columbia and surrounding areas in Missouri, United States. Participant dyads will be randomized to 4 weeks (plus 4 bimonthly booster sessions) of NiteCAPP CARES or a web-based sleep hygiene control (NiteCAPP SHARES). Participants will be assessed at baseline, after treatment, and 6- and 12-month follow-ups. The following assessments will be completed by caregivers: 1 week of actigraphy and daily diaries measuring sleep, Insomnia Severity Index, arousal (heart rate variability), inflammation (blood-derived biomarkers: interleukin-6 and C-reactive protein), neurodegeneration (blood-derived biomarkers: plasma amyloid beta [Aß40 and Aß42], total tau, and phosphorylated tau [p-tau181 and p-tau217]), cognition (Joggle battery, NIH Toolbox for Assessment of Neurological and Behavioral Function, and Cognitive Failures Questionnaire), stress and burden, health, and mood (depression and anxiety). Persons with dementia will complete 1 week of actigraphy at each time point. RESULTS: Recruitment procedures started in February 2022. All data are expected to be collected by 2026. Full trial results are planned to be published by 2027. Secondary analyses of baseline data will be subsequently published. CONCLUSIONS: This randomized controlled trial tests NiteCAPP CARES, a web-based CBT-I for rural caregivers. The knowledge obtained will address not only what outcomes improve but also how and why they improve and for how long, which will help us to modify NiteCAPP CARES to optimize treatment potency and support future pragmatic testing and dissemination. TRIAL REGISTRATION: ClinicalTrials.gov NCT04896775; https://clinicaltrials.gov/ct2/show/NCT04896775. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): PRR1-10.2196/37874.

Prevalence of and antecedents to dementia-related missing incidents in the community.

OBJECTIVE: The primary aim of this study is to examine the prevalence of and antecedents to missing incidents among community-dwelling persons with dementia. METHODS: This prospective study used mailed surveys and telephone interviews. RESULTS: The prevalence of having any incident was 0.46/year; the overall prevalence for missing incidents in this study was 0.65/year. Missing incidents had few antecedents and occurred largely when persons with dementia were performing everyday activities that they normally completed without incident. CONCLUSION: Given that a missing incident is relatively common among persons with dementia, health care professionals should assist caregivers with a missing incident plan early in the disease process. Also, as missing persons are found by persons other than the caregiver and caregivers underutilize identification devices, health care professionals may recommend the use of identification devices to facilitate a safe return.

Persons with dementia missing in the community: is it wandering or something unique?

BACKGROUND: At some point in the disease process many persons with dementia (PWD) will have a missing incident and be unable to safely return to their care setting. In previous research studies, researchers have begun to question whether this phenomenon should continue to be called wandering since the antecedents and characteristics of a missing incident are dissimilar to accepted definitions of wandering in dementia. The purpose of this study was to confirm previous findings regarding the antecedents and characteristics of missing incidents, understand the differences between those found dead and alive, and compare the characteristics of a missing incident to that of wandering. METHODS: A retrospective design was used to analyse 325 newspaper reports of PWD missing in the community. RESULTS: The primary antecedent to a missing incident, particularly in community-dwelling PWD, was becoming lost while conducting a normal and permitted activity alone in the community. The other common antecedent was a lapse in supervision with the expectation that the PWD would remain in a safe location but did not. Deaths most commonly occurred in unpopulated areas due to exposure and drowning. Those who died were found closer to the place last seen and took longer to find, but there were no significant differences in gender or age. The key characteristics of a missing incident were: unpredictable, non-repetitive, temporally appropriate but spatially-disordered, and while using multiple means of movement (walking, car, public transportation). Missing incidents occurred without the discernible pattern present in wandering such as lapping or pacing, repetitive and temporally-disordered. CONCLUSIONS: This research supports the mounting evidence that the concept of wandering, in its formal sense, and missing incidents are two distinct concepts. It will be important to further develop the concept of missing incidents by identifying the differences and similarities from wandering. This will allow a more targeted assessment and intervention strategy for each problem.

To Turn or Not to Turn: Exploring Nurses' Decision-Making Processes Concerning Regular Turning of Nursing Home Residents.

Background: Nursing home (NH) residents are at high-risk for pressure injuries (PrIs), and those living with Alzheimer's Disease and Related Dementias (ADRD) are at even greater risk. Understanding how nursing staff approach repositioning remains critical. Methods: As part of an ongoing clinical trial, this mixed-method prospective, exploratory, descriptive study examined repositioning efforts for PrI prevention. An investigator-developed checklist guided researcher observations, and focus groups revealed staff perspective on resident behaviors and corresponding repositioning approaches. Focus group transcripts were analyzed using the constant comparative coding method. Results: Repositioning observations were conducted for 88 residents. Resident behaviors and nursing approaches were similar between the ADRD (n = 62, 70%) and non-ADRD (n = 26, 30%) groups. Thirty-six staff participated in one of six focus group sessions. A conceptual model was developed to depict the repositioning process. Staff revealed care is guided by clinical frameworks and guidelines, along with resident preferences and behaviors. Conclusions: Protocol-driven, standardized PrI prevention care may limit the capacity to honor repositioning preferences. Insights from the focus groups highlight the importance of being cognizant of competing factors that may interfere with successful repositioning. Approaches by staff may be protocol-driven or an integrated method of care.

Sleep in dementia caregivers and the effect of a nighttime monitoring system.

PURPOSE: The purpose of this study was to determine if a nighttime home monitoring system, designed to track the movements of a care recipient with dementia, would relieve worry and improve sleep in caregivers of persons with dementia. DESIGN AND METHODS: In this controlled clinical trial, 49 dementia caregivers were followed for up to 1 year. Sleep was measured for 7-day intervals at nine points in time using actigraphy and a sleep diary. FINDINGS: Although the experimental caregivers generally reported that the system was "of great help" in relieving worry about nighttime activity, no significant group differences were found using multilevel modeling analyses. With regard to total sleep time, time awake after sleep onset, and sleep quality, multilevel models did not demonstrate any changes in sleep between groups, either averaged over time or for the interaction of group and time. CONCLUSIONS: Since previous analysis of our qualitative data suggested improvements in caregiver worry and sleep, problems other than night awakenings may be perpetuating the sleep problem. Future studies should include testing of multimodal sleep interventions. CLINICAL RELEVANCE: Caregivers have high amounts of unwanted wake time during the night and additional research is needed to identify effective interventions to improve their sleep.

Reducing dangerous nighttime events in persons with dementia by using a nighttime monitoring system.

BACKGROUND: Nighttime activity, a common occurrence in persons with dementia, increases the risk for injury and unattended home exits and impairs the sleep patterns of caregivers. Technology is needed that will alert caregivers of nighttime activity in persons with dementia to help prevent injuries and unattended exits. METHODS: As part of a product development grant, a controlled pilot study was conducted to test the effectiveness of a new night monitoring system designed for informal caregivers to use in the home. Data from 53 subjects were collected at nine points in time during a 12-month period regarding injuries and unattended home exits that occurred while the caregiver slept. Nighttime activity frequently resulted in nursing home placement. RESULTS: The night monitoring system proved a reliable adjunct to assist caregivers in managing nighttime activity. A total of nine events (injuries or unattended home exits) occurred during the study, with 6 events occurring in the control group. With intent-to-treat analysis, there was no difference between the groups. However, in a secondary analysis that was based on use of the intervention, experimental subjects were 85% less likely to sustain an event than control subjects. CONCLUSIONS: When nighttime activity occurred, it resulted in severe injuries sometimes associated with subsequent nursing home placement. The night monitoring system represents a new technology that caregivers can use to assist them in preventing nighttime injuries and unattended home exits in care recipients with dementia.

Wandering Behaviors and Activities of Daily Living Among Older Adults With Cognitive Impairment.

PURPOSE: The aim of the study was to examine the characteristics of wandering associated with preserved versus worsened activities of daily living (ADL) function. DESIGN: Longitudinal prospective design. Twenty-two cognitively impaired residents of an assisted living facility with over 450 observations were followed up to 8 months. METHODS: Hierarchical linear modeling techniques examine how wandering activity (episodes, distance traveled, gait speed), measured by a real-time locating system, may affect ADL (the Barthel index, the Functional Independence Measure [FIM]). FINDINGS: Wandering episodes were associated with increased ADL (B = 0.11, p ≤ .05, FIM); wandering distance (B = -4.52, p ≤ .05, the Barthel index; B = -2.14, p ≤ .05, FIM) was associated with decreased ADL. CONCLUSION: Walking an average of 0.81 miles per week with 18 or fewer wandering episodes is associated with decreased ability to perform ADL. CLINICAL RELEVANCE: Tailored protocols that allow productive wandering with ongoing assessment for fatigue/other physiological needs to appropriately limit distance walked within wandering episodes are needed for this population.

A research proposal testing a new model of ambulation activity among long-term care residents with dementia/cognitive impairment: the study protocol of a prospective longitudinal natural history study.

BACKGROUND: Excessive and patterned ambulation is associated with falls, urinary tract infections, co-occurring delirium and other acute events among long-term care residents with cognitive impairment/dementia. This study will test a predictive longitudinal data model that may lead to the preservation of function of this vulnerable population. METHODS/DESIGN: This is a single group, longitudinal study with natural observations. Data from a real-time locating system (RTLS) will be used to objectively and continuously measure ambulation activity for up to 2 years. These data will be combined with longitudinal acute event and functional status data to capture patterns of change in health status over time. Theory-driven multilevel models will be used to test the trajectories of falls and other acute conditions as a function of the ambulation activity and demographic, functional status, gait quality and balance ability including potential mediation and/or moderation effects. Data-driven machine learning algorithms will be applied to run screening of the high dimensional RTLS data together with other variables to discover new and robust predictors of acute events. DISCUSSION: The findings from this study will lead to the early identification of older adults at risk for falls and the onset of acute medical conditions and interventions for individualized care.