Pressure Injury Data Reconciliation in a Randomized Controlled Trial

OBJECTIVE

To advance pressure injury (PrI) research in individuals with spinal cord injury (SCI) by describing lessons learned and recommendations for future research, ultimately promoting PrI prevention and more effective wound care. This paper describes the detailed procedures undertaken to collect and reconcile PrI data and summarizes the types of discrepancies identified.

DESIGN

Secondary analyses of PrI data collected between 2009 and 2014 in a randomized controlled trial (parent study).

SETTING

Participants in the parent study were recruited from a large rehabilitation center in the Los Angeles area that serves primarily individuals with limited resources.

PARTICIPANTS

232 participants with SCI and a history of 1 or more medically serious PrI (MSPrI) in the previous 5 years.

INTERVENTIONS

Participants in the parent study were randomized to a 12-month PrI prevention intervention led by an occupational therapist, or to usual care.

MAIN OUTCOME MEASURES

Relations among PrI characteristics, data sources (phone interviews, skin checks, paper and electronic medical records [MRs]), and treatment condition, and sensitivity of 6 different data sources in detecting MSPrIs.

RESULTS

The majority (62%) of MSPrIs were in the pelvic region. MRs detected 82% of the MSPrIs overall, making it the most sensitive data source, and scheduled skin checks were the second-most sensitive data source, finding 37% of the MSPrIs.

CONCLUSIONS

MR review is the preferred method for ascertaining MSPrIs in clinical trials of interventions designed to reduce the incidence of these injuries. When multiple sources of information are used, careful reconciliation of reports is necessary to ensure accuracy.

Assessment of pediatric shoulder range of motion and loading response to evaluate the biofidelity of the Large Omni-directional Child (LODC) anthropomorphic test device (ATD) shoulder design

The shoulder girdle complex, through engagement with the seat belt, influences motor vehicle occupant upper body movement during frontal impacts, affecting the movement of the head and spine. The recently developed Large Omni-directional Child (LODC) anthropomorphic test device (ATD) was designed with flexible shoulder girdle structures that capture the unique kinematics in pediatric occupants. However, the LODC shoulder has not been evaluated for biofidelity due to the lack of biomechanical data available on pediatric shoulder responses. This study evaluated quasi-static pediatric shoulder girdle complex responses through non-invasive displacement measurements. These data were obtained to evaluate, and, if necessary, improve the biofidelity of the LODC ATD. Shoulder range of motion and anthropometric measurements were obtained from 25 pediatric volunteers, ages 8-12 years old. Loads were applied bilaterally exclusively to the shoulder complexes in increments of 25 N up to 150 N per shoulder at 90 and 135 degrees of shoulder flexion. Still photos were used to determine shoulder displacement in the sagittal plane from images captured prior to and following the load applications. Data analysis consisted of motion tracking to evaluate the absolute and relative displacement of the right acromion and T1. The displacements for each volunteer were normalized based on the volunteer's shoulder width compared to the shoulder width of the LODC ATD. For the 90° load, the acromion moved relative to T1 an average of 28.1 mm forward and 3.1 mm downward at maximum displacement. For the 135° load, the acromion moved relative to T1 an average of 15.5 mm forward and 42.7 mm upward at maximum displacement. Similar displacements at higher loads indicated that the volunteers achieved their maximum range of motion. The results of this study will be compared to the LODC ATD, assessing the biofidelity of the shoulder complex.

Optimizing Occupations, Habits, and Routines for Health and Well-Being With Lifestyle Redesign®: A Synthesis and Scoping Review

IMPORTANCE

Lifestyle Redesign® originated as a preventive occupational therapy intervention for healthy older adults, and it was found to be both effective and cost effective in the Well Elderly Studies initiated in the 1990s. Building on that empirical foundation, the scope of Lifestyle Redesign has been greatly expanded as a general intervention framework addressing prevention and chronic condition management in a wide range of populations, settings, and conditions. Yet until now, its full scope, defining characteristics, and supporting evidence have not been clearly and succinctly described, limiting its potential reach and impact.

OBJECTIVE

To outline the definition and key characteristics of Lifestyle Redesign, provide a scoping review of its evidence base and future directions for research, describe its current applications, and make recommendations for its use in clinical practice.

EVIDENCE REVIEW

We searched PubMed and CINAHL, tables of contents of 10 occupational therapy journals, and citations in two seminal Lifestyle Redesign publications to identify articles published in 1997-2020 that described quantitative outcomes (for n ≥ 20) of interventions meeting the defining characteristics of Lifestyle Redesign.

FINDINGS

Our scoping review yielded 12 publications providing supportive evidence for Lifestyle Redesign's positive impact on a range of health and well-being outcomes among both well populations and those with chronic conditions.

CONCLUSIONS AND RELEVANCE

Lifestyle Redesign has the potential to meet a growing need in clinical and community settings for health care services that address prevention, health promotion, and chronic disease management. What This Article Adds: Current evidence supports the use of Lifestyle Redesign to improve health and well-being for a range of client populations. This review outlines its defining characteristics and current applications to improve its implementation in clinical practice and expand related research efforts.

Long-Term Follow-Up of a Lifestyle Intervention for Late-Midlife, Rural-Dwelling Latinos in Primary Care

Importance: Rural-dwelling Latinos are an underresourced population in need of accessible and effective wellness programs.

Objective: To evaluate patients’ long-term health-related outcomes after lifestyle intervention.

Design: An uncontrolled pilot trial assessing change in health from pretreatment to long-term follow-up (12 mo after intervention completion, no contact) and from posttreatment to long-term follow-up.

Setting: Rural, community-based primary care.

Participants: Latino and Hispanic safety-net primary care patients, ages 50 to 64 yr.

Intervention: A culturally tailored, 4-mo lifestyle intervention co-led by occupational therapy practitioners and Latino community health workers that features telehealth and in-home sessions covering topics such as healthy eating and navigating health care.

Outcomes and Measures: Self-reported and physiological outcomes: symptom–well-being (primary), stress, sleep disturbance, social satisfaction, physical activity, patient activation, blood pressure, and weight. Exit interviews addressed health experiences and intervention impact on participants’ lives.

Results: Participants (N = 27) demonstrated clinically significant pretreatment to long-term follow-up benefits in all symptom–well-being dimensions (Cohen’s d ≥ 0.8, p ≤ .004), with additional gains from posttreatment to long-term follow-up (d ≥ 0.4, p ≤ .05). Significant improvements from pre- to posttreatment in systolic blood pressure, stress, and social role and activity satisfaction were maintained at long-term follow-up. No changes were observed in weight, physical activity, or diastolic blood pressure. Participants described the intervention’s sustained positive effect on their wellness.

Conclusions and Relevance: A lifestyle intervention led by occupational therapy practitioners and community health workers in a primary care context has potential to achieve long-term health benefits in rural-dwelling, late-midlife Latinos.

What This Article Adds: This study reveals that rural, late-midlife Latinos showed long-lasting improvements in psychological and physical health after finishing a program that helped them make healthy lifestyle choices. This finding supports the unique contribution of occupational therapy in primary care settings.

Contextualizing the Positive Effects of the Well Elderly 2 Trial: A Response to Schelly and Ohl (2019)

IMPORTANCE

A recent reanalysis of data from the Well Elderly (WE) 2 study purportedly indicated that the intervention did not achieve clinically meaningful or statistically significant effects; this article addresses these criticisms.

OBJECTIVE

To contextualize the WE 2 study as targeting a nonclinical population and demonstrate that the intervention produced substantively important, statistically significant effects.

DESIGN

Secondary analysis of WE 2 intervention-based pre-post change scores.

SETTING

The original trial occurred primarily in senior centers and senior housing facilities in greater Los Angeles.

PARTICIPANTS

Independent-living older adults (N = 324) who were assessed before and after intervention.

INTERVENTION

The WE intervention, a version of the Lifestyle Redesign® (LR) approach, was administered by occupational therapists over 6 mo by means of group and individual sessions.

OUTCOMES AND MEASURES

The 36-item Short Form Health Survey, the Life Satisfaction Index-Z, and the Center for Epidemiologic Studies Depression Scale.

RESULTS

The WE intervention was associated with statistically significant improvement on 10 of 12 outcome variables that were examined.

CONCLUSIONS AND RELEVANCE

Because the WE intervention was hypothesized to reduce age-related decline and followed a population-oriented approach, the expectation that average results would be clinically meaningful was inappropriate. The intervention produced positive effects across a wide array of outcome domains. In settings in which clinical meaningfulness is an appropriate index of intervention outcomes, evidence suggests that LR produces effects that are clinically meaningful. As an evidence-based intervention, LR should be considered useful both in population-oriented contexts and in addressing discrete health conditions.

WHAT THIS ARTICLE ADDS

Valid analyses demonstrate that the positive experimental effects of the WE 2 study are, in fact, genuine and cost-effective, and LR in clinically oriented contexts has produced statistically significant, clinically meaningful results. Clearly and accurately representing the evidence base of occupational therapy in prevention and chronic care is of critical importance to advance the field as a whole.

Auditory event-related potentials and associations with sensory patterns in children with autism spectrum disorder, developmental delay, and typical development

Atypical sensory response patterns are common in children with autism and developmental delay. Expanding on previous work, this observational electroencephalogram study assessed auditory event-related potentials and their associations with clinically evaluated sensory response patterns in children with autism spectrum disorder (n = 28), developmental delay (n = 17), and typical development (n = 39). Attention-orienting P3a responses were attenuated in autism spectrum disorder relative to both developmental delay and typical development, but early sensory N2 responses were attenuated in both autism spectrum disorder and developmental delay relative to typical development. Attenuated event-related potentials involving N2 or P3a components, or a P1 × N2 interaction, were related to more severe hyporesponsive or sensory-seeking response patterns across children with autism spectrum disorder and developmental delay. Thus, although attentional disruptions may be unique to autism spectrum disorder, sensory disruptions appear across developmental delay and are associated with atypical sensory behaviors.

FEASIBILITY OF A TELEHEALTH-DELIVERED LIFESTYLE INTERVENTION FOR LATE-MIDLIFE LATINOS LIVING IN RURAL CALIFORNIA

Late-midlife Latinos (50–64 years old) living in rural regions experience significant health disparities, oftentimes exacerbated by limited access to healthcare services. In a previous pilot study, we observed psychosocial, behavioral, and cardiometabolic health improvements sustained over 12-months in late-midlife Latinos who participated in ¡Vivir Mi Vida! (¡VMV!), a culturally tailored lifestyle intervention led by a Latino community health worker (promotor) and occupational therapist team. For the present study, we assessed the feasibility of telehealth-delivered ¡VMV! modules. Participants (N=10) received an abbreviated three-week version of ¡VMV! consisting of an in-person promotor-led orientation and two one-hour telehealth sessions. Telehealth opinions/experiences were assessed at baseline and follow-up using study-specific questionnaires and by interview. Patient-identified health quality was measured pre-post intervention using the Measure Yourself Medical Outcome Profile (MYMOP2) and a single-item stress index. Participants generally agreed that telehealth session quality was equivalent to in-person sessions, and demonstrated confidence in their ability to communicate freely with the promotor and actively participate in telehealth sessions. We observed significant improvements in nearly all MYMOP2 components and a trend in stress reduction. The intervening promotor reflected that telehealth ¡VMV! extended healthcare to patients impacted by risk factors such as geographic isolation, lack of available services, and hesitancy to access in-person services due to fear of discrimination or deportation. Participants provided highly positive feedback, highlighting the practicality and convenience of the telehealth program. Feasibility of delivering ¡VMV! via telehealth to late-midlife rural-dwelling Latinos and its potential for positive effect was supported.

Lifestyle intervention for adults with spinal cord injury: Results of the USC-RLANRC Pressure Ulcer Prevention Study

CONTEXT/OBJECTIVE

Medically serious pressure injuries (MSPrIs), a common complication of spinal cord injury (SCI), have devastating consequences on health and well-being and are extremely expensive to treat. We aimed to test the efficacy of a lifestyle-based intervention designed to reduce incidence of MSPrIs in adults with SCI.

DESIGN

A randomized controlled trial (RCT), and a separate study wing involving a nonrandomized standard care control group.

SETTING

Rancho Los Amigos National Rehabilitation Center, a large facility serving ethnically diverse, low income residents of Los Angeles County.

PARTICIPANTS

Adults with SCI, with history of one or more MSPrIs over the past 5 years: N=166 for RCT component, N=66 in nonrandomized control group.

INTERVENTIONS

The Pressure Ulcer Prevention Program, a 12-month lifestyle-based treatment administered by healthcare professionals, largely via in-home visits and phone contacts.

OUTCOME MEASURES

Blinded assessments of annualized MSPrI incidence rates at 12 and 24 months, based on: skin checks, quarterly phone interviews with participants, and review of medical charts and billing records. Secondary outcomes included number of surgeries and various quality-of-life measures.

RESULTS

Annualized MSPrI rates did not differ significantly between study groups. At 12 months, rates were .56 for intervention recipients, .48 for randomized controls, and .65 for nonrandomized controls. At follow-up, rates were .44 and .39 respectively for randomized intervention and control participants.

CONCLUSIONS

Evidence for intervention efficacy was inconclusive. The intractable nature of MSPrI threat in high-risk SCI populations, and lack of statistical power, may have contributed to this inability to detect an effect.

TRIAL REGISTRATION

ClinicalTrials.gov NCT01999816.

Longitudinal assessment of stability of sensory features in children with autism spectrum disorder or other developmental disabilities

Prior research on the stability of sensory processing problems in children with autism spectrum disorder (ASD) or other developmental disabilities (DD) has produced inconsistent results. We employed a longitudinal study design to assess the stability of three clinical sensory response patterns: hyporesponsiveness; hyperresponsiveness; and sensory interests, repetitions, and seeking behaviors (SIRS). Parents of children with ASD (n = 55) or DD (n = 35) responded to sensory questionnaires at two time points (T1 and T2) separated by 3.3 years on average, with the children aged 2-12 years (M = 5.69 ± 2.46) at the first assessment. For each sensory response pattern, regression analysis revealed that, for both ASD and DD groups, scores at T1 were strong predictors of scores at T2. Over the longitudinal assessment interval, there was a significant mean decline in severity for SIRS in both groups and for hyporesponsiveness in the ASD group. Parental estimates of the amount of therapy services received were positively associated with the severity of sensory features at T2, an outcome that may result from increased intervention dosages being administered to children who fail to improve over time. The results are discussed in terms of person-centered and environmental considerations, which, in combination, have the capacity to affect stability outcomes for sensory features. Autism Research 2019, 12: 100-111. © 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Children with autism spectrum disorder (ASD) and other developmental disabilities (DD) may process sensory information differently from those who do not have ASD. For example, some children may be over-responsive or under-responsive to sound or touch. In this study, we showed that sensory features in preschool/school-aged children with ASD and DD tend to decrease on average over a several year period. However, individual children tend to retain their ranking (low or high in sensory features) in comparison to other children over time.

Understanding the Mechanisms of Change in a Lifestyle Intervention for Older Adults

Purpose of the Study

This study investigated the mechanisms of change underlying an activity-based lifestyle intervention, an occupational therapy program aimed at promoting healthy habits, and routines in older adults. We examined two activity-relevant factors as potential mediators linking the intervention to reduced symptoms of depression: activity frequency and global perceptions of activity significance. Social connections and perceived control were assessed to understand how activity-related factors relate to reduced symptoms of depression.

Design and Methods

The sample consisted of 460 multiethnic community-dwelling older adults aged 60-95 years. Participants were randomly assigned to a 6-month lifestyle redesign intervention (n = 232) or a no-treatment control (n = 228) condition. After the 6-month period, 360 individuals completed post-testing. Latent change score models were used to represent changes from baseline over the experimental interval. Structural equation models were applied to examine the indirect effects of the intervention on reduced depressive symptoms.

Results

The results demonstrated significant indirect effects from intervention receipt to decreased depressive symptoms via increased activity frequency and activity significance. Higher activity frequency was linked to fewer depressive symptoms via heightened social connections, whereas increased activity significance was associated with fewer depressive symptoms via enhanced perceived control.

Implications

The results support basic principles of occupational therapy by highlighting important mediating roles of activity frequency and activity significance in reducing depressive symptoms. Understanding of these change mechanisms can help optimize activity-centered interventions to reduce depressive symptoms.

A Pilot Study of the ¡Vivir Mi Vida! Lifestyle Intervention for Rural-Dwelling, Late-Midlife Latinos: Study Design and Protocol

Older, rural-dwelling Latinos face multiple health disparities. We describe the protocol of a pilot study of a community health worker-occupational therapist-led lifestyle program, ¡Vivir Mi Vida! ( ¡VMV!), designed for delivery in primary care and adapted for late-midlife, Latino rural-living patients. Using mixed methods, we collected feasibility, acceptability, and preliminary efficacy data on ¡VMV!. Forty 50- to 64-year-old Latinos participated in a 16-week lifestyle intervention led by a community health worker-occupational therapist team. We conducted pre- and post-intervention assessments to evaluate the efficacy of ¡VMV! in improving psychosocial and clinical health outcomes. Focus groups and interviews were held post-intervention with participants and key stakeholders to assess feasibility and acceptability. This is the first trial designed to evaluate a lifestyle intervention that includes collaboration between occupational therapists and community health workers within primary care. The detailed description of methodology promotes research transparency and reproducibility of a community health worker-occupational therapist-led lifestyle intervention.

Association of Sleep Quality With Social Activity Satisfaction and Stress in Late-Middle-Aged Latinos Living in Rural California

Date Presented 3/30/2017

Poor sleep quality is associated with decreased social activity satisfaction and increased stress in rural-living, late-middle-aged Latinos. Study results help characterize this understudied minority group at high risk for poor occupational health and outcomes.

Primary Author and Speaker: Stacey Schepens Niemiec

Contributing Authors: Cheryl Vigen, Jeanine Blanchard, Jenny Martinez, Mike Carlson

A key requirement for CD300f in innate immune responses of eosinophils in colitis

Eosinophils are traditionally studied in the context of type 2 immune responses. However, recent studies highlight key innate immune functions for eosinophils especially in colonic inflammation. Surprisingly, molecular pathways regulating innate immune activities of eosinophil are largely unknown. We have recently shown that the CD300f is highly expressed by colonic eosinophils. Nonetheless, the role of CD300f in governing innate immune eosinophil activities is ill-defined. RNA sequencing of 162 pediatric Crohn's disease patients revealed upregulation of multiple Cd300 family members, which correlated with the presence of severe ulcerations and inflammation. Increased expression of CD300 family receptors was also observed in active ulcerative colitis (UC) and in mice following induction of experimental colitis. Specifically, the expression of CD300f was dynamically regulated in monocytes and eosinophils. Dextran sodium sulfate (DSS)-treated Cd300f^-/- mice exhibit attenuated disease activity and histopathology in comparison with DSS-treated wild type (WT). Decreased disease activity in Cd300f^-/- mice was accompanied with reduced inflammatory cell infiltration and nearly abolished production of pro-inflammatory cytokines. Monocyte depletion and chimeric bone marrow transfer experiments revealed a cell-specific requirement for CD300f in innate immune activation of eosinophils. Collectively, we uncover a new pathway regulating innate immune activities of eosinophils, a finding with significant implications in eosinophil-associated gastrointestinal diseases.

The prognostic significance of faecal calprotectin in patients with inactive inflammatory bowel disease

BACKGROUND

Faecal calprotectin, an established biomarker used to assess mucosal inflammation, has been shown to correlate with endoscopic activity in inflammatory bowel disease (IBD). Longitudinal monitoring of faecal calprotectin, however, has rarely been employed beyond assessment of therapy response and post hoc analyses of clinical trials.

AIM

To study whether consecutive measurements of faecal calprotectin every third month are useful for monitoring patients with IBD in clinical remission.

METHODS

Patients aged 18 years or older, with a known diagnosis of IBD in clinical remission, were prospectively studied. Patients provided faecal samples every third month and were prospectively followed until the first clinical relapse or the end of the 2-year follow-up period. Measurements (EK-CAL, Bühlmann Lab. AG, Switzerland) were done at the end of the study. A Cox model with time-dependent covariates was used for analysis.

RESULTS

Among 104 patients, Crohn's disease (n = 49) and ulcerative colitis (n = 55), 37 had a relapse. A doubling of faecal calprotectin level between two consecutively collected samples was associated with a 101% increased risk of relapse (HR: 2.01; 95% CI: 1.53-2.65; P < 0.001). The relative risk of relapse attenuated with time (HR: 0.80; 95% CI: 0.75-0.86; P < 0.001), by a 20% decrease in risk of relapse per 3-month period since the sample was obtained.

CONCLUSIONS

By consecutively measuring faecal calprotectin every third month, we quantified the risk of relapse related to faecal calprotectin change and observed attenuation of the risk across time. Our data suggest that longitudinal monitoring of faecal calprotectin is informative in predicting relapse in IBD.

Systematic review of behavioral and educational interventions to prevent pressure ulcers in adults with spinal cord injury

OBJECTIVE

To investigate the efficacy of behavioral or educational interventions in preventing pressure ulcers in community-dwelling adults with spinal cord injury (SCI).

DATA SOURCES

Cochrane, Clinical Trials, PubMed, and Web of Science were searched in June 2016. The search combined related terms for pressure ulcers, spinal cord injury, and behavioral intervention. Each database was searched from its inception with no restrictions on year of publication.

REVIEW METHODS

Inclusion criteria required that articles were (a) published in a peer-reviewed journal in English, (b) evaluated a behavioral or educational intervention for pressure ulcer prevention, (c) included community-dwelling adult participants aged 18 years and older with SCI, (d) measured pressure ulcer occurrence, recurrence, or skin breakdown as an outcome, and (e) had a minimum of 10 participants. All study designs were considered. Two reviewers independently screened titles and abstracts. Extracted information included study design, sample size, description of the intervention and control condition, pressure ulcer outcome measures, and corresponding results.

RESULTS

The search strategy yielded 444 unique articles of which five met inclusion criteria. Three were randomized trials and two were quasi-experimental designs. A total of 513 participants were represented. The method of pressure ulcer or skin breakdown measurement varied widely among studies. Results on pressure ulcer outcomes were null in all studies. Considerable methodological problems with recruitment, intervention fidelity, and participant adherence were reported.

CONCLUSIONS

At present, there is no positive evidence to support the efficacy of behavioral or educational interventions in preventing pressure ulcer occurrence in adults with SCI.

Napping and Nighttime Sleep: Findings From an Occupation-Based Intervention

OBJECTIVE

To describe sleeping behaviors and trends over time among an ethnically diverse group of community-living older adults.

METHOD

A descriptive secondary data analysis of a subsample (n = 217) from the Lifestyle Redesign randomized controlled trial was done to explore baseline napping and sleeping patterns as well as 6-mo changes in these outcomes.

RESULTS

At baseline, the average time sleeping was 8.2 hr daily (standard deviation = 1.7). Among all participants, 29% reported daytime napping at baseline, of which 36% no longer napped at follow-up. Among participants who stopped napping, those who received an occupation-based intervention (n = 98) replaced napping time with nighttime sleep, and those not receiving an intervention (n = 119) experienced a net loss of total sleep (p < .05).

CONCLUSION

Among participants who stopped napping, the occupation-based intervention may be related to enhanced sleep. More research examining the role of occupation-based interventions in improving sleep is warranted.

Developing Occupation-Based Preventive Programs for Late-Middle-Aged Latino Patients in Safety-Net Health Systems

Latino adults between ages 50 and 60 yr are at high risk for developing chronic conditions that can lead to early disability. We conducted a qualitative pilot study with 11 Latinos in this demographic group to develop a foundational schema for the design of health promotion programs that could be implemented by occupational therapy practitioners in primary care settings for this population. One-on-one interviews addressing routines and activities, health management, and health care utilization were conducted, audiotaped, and transcribed. Results of a content analysis of the qualitative data revealed the following six domains of most concern: Weight Management; Disease Management; Mental Health and Well-Being; Personal Finances; Family, Friends, and Community; and Stress Management. A typology of perceived health-actualizing strategies was derived for each domain. This schema can be used by occupational therapy practitioners to inform the development of health-promotion lifestyle interventions designed specifically for late-middle-aged Latinos.

Abstract 116: Characterization of a Sodium Responsive Human Sodium Bicarbonate Transporter NBCe2 in Human Proximal Tubule

The electrogenic sodium bicarbonate cotransporter (NBCe2) is encoded by SLC4A5, variants of which have been associated with salt sensitivity of blood pressure (BP), which affects 25% of the adult population. NBCe2 is thought to mediate sodium bicarbonate cotransport primarily in the renal collecting duct, but NBCe2 mRNA is also found in the rodent renal proximal tubule (RPT), another site of bicarbonate transport. The protein expression or function of NBCe2 has not been demonstrated in the human RPT. We validated an NBCe2 antibody by siRNA and Western blot, as well as overexpression of an epitope-tagged NBCe2 construct in both RPT cells (RPTCs) and HEK293 cells. We immune-localized (peptide pre-absorbable) NBCe2 protein in the RPT of fresh and frozen human kidney slices, RPTCs isolated from human urine, and in isolated RPTC apical membrane. NBCe2 was primarily found in the Golgi while NBCe1, another electrogenic member of the same family, was primarily found at the basolateral membrane, under basal conditions. Following a short-term increase in intracellular sodium, NBCe2 expression increased at the apical membrane in cultured slices of human kidney (1.75±0.15 fold increase over basal, N=3, p<0.05) and polarized, immortalized RPTCs (0.08±0.015 vs 0.03±0.006 control, NBCe2/CD13 RFU, N=3, p<0.05), while the basolateral localization of NBCe1 was decreased (30.7±5.4% over basal, N=3, p<0.05). DIDS (electrogenic sodium bicarbonate inhibitor, 500 μM, 10 min) inhibitable bicarbonate dependent pH recovery in the presence of EIPA (NHE inhibitor,100 nM, 10 min) after ammonium chloride prepulse (20 mM, 5 min) was higher in the cells cultured under high salt conditions (26.7±7.2% over basal, N=3, p<0.05). Thus, NBCe2 appears to be important in apical sodium and bicarbonate cotransport under high salt conditions. Future studies will examine the role of NBCe2 in mediating increased renal sodium transport in human salt sensitivity of BP.

Does Sleep Change After an Occupation-Based Lifestyle Intervention? A Pilot Study

Date Presented 4/16/2015

Sleep problems threaten occupational engagement in older adults. This pilot study suggests that occupational therapy may enhance sleep by targeting engagement in occupation. This study provides a structure for future researchers analyzing the role of occupational therapy in older adult sleep behaviors.

Development and validation of the activity significance personal evaluation (ASPEn) scale

BACKGROUND/AIM

Engagement in desired occupations can promote health and wellbeing in older adults. Assessments of engagement often measure frequency, amount or importance of specific activities. This study aimed to develop a scale to measure older adults' evaluation of the extent to which their everyday activities are contributing to their health and wellness.

METHODS

Eighteen items, each scored with a seven-point rating scale, were initially developed by content experts, covering perceptions of how daily activities contribute to physical and mental health, as well as satisfaction and activity participation in the last six months. Rasch analysis methods were used to refine the scale using the pencil and paper responses of 460 community-living older adults.

RESULTS

Initial Rasch analysis indicated three unlabelled rating scale categories were seldom used, reducing measurement precision. Five items were conceptually different by misfit statistics and principal component analysis. Subsequently, those items were removed and the number of rating scale steps reduced to 4. The remaining 13-item, 4-step scale, termed the Activity Significance Personal Evaluation (ASPEn), formed a unidimensional hierarchy with good fit statistics and targeting. Person separation reliability (2.7) and internal consistency (.91) indicated the tool is appropriate for individual person measurement. Relative validity indicated equivalence between Rasch measures and total raw scores.

CONCLUSIONS

ASPEn is a brief, easily administered assessment of older adults' perception of the contribution of everyday activities to personal health and wellness. ASPEn may facilitate occupational therapy practice by enabling clinicians to assess change in meaning of an older adult's activity over time.

Registered Replication Report: Schooler and Engstler-Schooler (1990)

Trying to remember something now typically improves your ability to remember it later. However, after watching a video of a simulated bank robbery, participants who verbally described the robber were 25% worse at identifying the robber in a lineup than were participants who instead listed U.S. states and capitals-this has been termed the "verbal overshadowing" effect (Schooler & Engstler-Schooler, 1990). More recent studies suggested that this effect might be substantially smaller than first reported. Given uncertainty about the effect size, the influence of this finding in the memory literature, and its practical importance for police procedures, we conducted two collections of preregistered direct replications (RRR1 and RRR2) that differed only in the order of the description task and a filler task. In RRR1, when the description task immediately followed the robbery, participants who provided a description were 4% less likely to select the robber than were those in the control condition. In RRR2, when the description was delayed by 20 min, they were 16% less likely to select the robber. These findings reveal a robust verbal overshadowing effect that is strongly influenced by the relative timing of the tasks. The discussion considers further implications of these replications for our understanding of verbal overshadowing.

Implementing trials of complex interventions in community settings: the USC-Rancho Los Amigos pressure ulcer prevention study (PUPS)

BACKGROUND

Randomized trials of complex, non-pharmacologic interventions implemented in home and community settings, such as the University of Southern California (USC)-Rancho Los Amigos National Rehabilitation Center (RLANRC) Pressure Ulcer Prevention Study (PUPS), present unique challenges with respect to (1) participant recruitment and retention, (2) intervention delivery and fidelity, (3) randomization and assessment, and (4) potential inadvertent treatment effects.

PURPOSE

We describe the methods employed to address the challenges confronted in implementing PUPS. In this randomized controlled trial, we are assessing the efficacy of a complex, preventive intervention in reducing the incidence of, and costs associated with, the development of medically serious pressure ulcers in people with spinal cord injury.

METHODS

Individuals with spinal cord injury recruited from RLANRC were assigned to either a 12-month preventive intervention group or a standard care control group. The primary outcome is the incidence of serious pressure ulcers with secondary endpoints including ulcer-related surgeries, medical treatment costs, and quality of life. These outcomes are assessed at 12 and 24 months after randomization. Additionally, we are studying the mediating mechanisms that account for intervention outcomes.

RESULTS

PUPS has been successfully implemented, including recruitment of the target sample size of 170 participants, assurance of the integrity of intervention protocol delivery with an average 90% treatment adherence rate, and enactment of the assessment plan. However, implementation has been replete with challenges. To meet recruitment goals, we instituted a five-pronged approach customized for an underserved, ethnically diverse population. In intervention delivery, we increased staff time to overcome economic and cultural barriers to retention and adherence. To ensure treatment fidelity and replicability, we monitored intervention protocol delivery in accordance with a rigorous plan. Finally, we have overcome unanticipated assessment and design concerns related to (1) determining pressure ulcer incidence/severity, (2) randomization imbalance, and (3) inadvertent potential control group contamination.

LIMITATIONS

We have addressed the most daunting challenges encountered in the recruitment, assessment, and intervention phases of PUPS. Some challenges and solutions may not apply to trials conducted in other settings.

CONCLUSIONS

Overcoming challenges has required a multifaceted approach incorporating individualization, flexibility, and persistence, as well as the ability to implement needed mid-course corrections.

Predictors of retention among African American and Hispanic older adult research participants in the Well Elderly 2 randomized controlled trial

The purpose of this study was to document predictors of long-term retention among minority participants in the Well Elderly 2 Study, a randomized controlled trial of a lifestyle intervention for community-dwelling older adults. The primary sample included 149 African American and 92 Hispanic men and women aged 60 to 95 years, recruited at senior activity centers and senior residences. Chi-square and logistic regression procedures were undertaken to examine study-based, psychosocial and health-related predictors of retention at 18 months following study entry. For both African Americans and Hispanics, intervention adherence was the strongest predictor. Retention was also related to high active coping and average (vs. high or low) levels of activity participation among African Americans and high social network strength among Hispanics. The results suggest that improved knowledge of the predictors of retention among minority elders can spawn new retention strategies that can be applied at individual, subgroup, and sample-wide levels.

Infliximab as rescue therapy in hospitalised patients with steroid-refractory acute ulcerative colitis: a long-term follow-up of 211 Swedish patients

BACKGROUND

Rescue therapy with infliximab (IFX) has been proven effective in a steroid-refractory attack of ulcerative colitis (UC). The long-term efficacy is not well described.

AIM

To present a retrospective study of IFX as rescue therapy in UC. Primary end points were colectomy-free survival at 3 and 12 months.

METHODS

In this multicentre study, 211 adult patients hospitalised between 1999 and 2010 received IFX 5 mg/kg as rescue therapy due to a steroid-refractory, moderate-to-severe attack of UC. Exclusion criteria were duration of current flare for >12 weeks, corticosteroid treatment for >8 weeks before hospitalisation, previous IFX therapy or Crohn's disease.

RESULTS

Probability of colectomy-free survival at 3 months was 0.71 (95% CI, 0.64-0.77), at 12 months 0.64 (95% CI, 0.57-0.70), at 3 years 0.59 (95% CI, 0.52-0.66) and at 5 years 0.53 (95% CI, 0.44-0.61). Steroid-free, clinical remission was achieved in 105/211 (50%) and 112/209 (54%) patients at 3 and 12 months respectively. Of 75 colectomies during the first year, 48 (64%) were carried out during the first 14 days, 13 (17%) on days 15-90 and 14 (19%) between 3 and 12 months. There were three (1.4%) deaths during the first 3 months.

CONCLUSIONS

Infliximab is an effective rescue treatment, both short- and long-term, in a steroid-refractory attack of UC. Most IFX failures underwent surgery during the first 14 days, which calls for studies on how to optimise induction treatment with IFX. Serious complications, including mortality, were rare.

Relationship of Global Self-Evaluations of Activity to Psychosocial and Health-Related Aging Outcomes

The authors obtained older adults' self-rated judgments about the quality of their activity engagement considered as a whole (global activity evaluation) and, using cross-sectional survey data, tested the ability of such judgments to predict well-being. Participants were 460 community-dwelling older adults who responded to (1) global activity evaluations, (2) activity participation frequency scales, and (3) indices of life satisfaction, depression, and physical and mental health-related quality of life. Regression analyses indicated that global activity evaluations had a stronger relationship to psychosocial outcome indices than did participation frequency ratings, although both measurement approaches were associated with statistically significant predictions. However, global evaluations and participation frequency ratings were approximately equal in their ability to predict physical health-related quality of life. These relationships were fairly consistent across ethnic groups. Overall, the results suggest that ideally the two strategies for assessing activity should be incorporated in future research on activity and occupational therapy practice.