In Search of a Gold Standard Tool for Assessing Knowledge of Stroke: A Systematic Review.

BACKGROUND: Knowledge of stroke is essential to empower people to reduce their risk of these events. However, valid tools are required for accurate and reliable measurement of stroke knowledge. We aimed to systematically review contemporary stroke knowledge assessment tools and appraise their content validity, feasibility, and measurement properties. METHODS: The protocol was registered in PROSPERO (CRD42023403566). Electronic databases (MEDLINE, PsycInfo, CINAHL, Embase, Scopus, Web of Science) were searched to identify published articles (1 January 2015-1 March 2023), in which stroke knowledge was assessed using a validated tool. Two reviewers independently screened titles and abstracts prior to undertaking full-text review. COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) methods guided the appraisal of content validity (relevance, comprehensiveness, comprehensibility), feasibility, and measurement properties. RESULTS: After removing duplicates, the titles and abstracts of 718 articles were screened; 323 reviewed in full; with 42 included (N = 23 unique stroke knowledge tools). For content validity, all tools were relevant, two were comprehensive, and seven were comprehensible. Validation metrics were reported for internal consistency (n = 20 tools), construct validity (n = 17 tools), cross-cultural validity (n = 15 tools), responsiveness (n = 9 tools), reliability (n = 7 tools), structural validity (n = 3 tools), and measurement error (n = 1 tool). The Stroke Knowledge Test met all content validity criteria, with validation data for six measurement properties (n = 3 rated "Sufficient"). CONCLUSION: Assessment of stroke knowledge is not standardised and many tools lacked validated content or measurement properties. The Stroke Knowledge Test was the most comprehensive but requires updating and further validation for endorsement as a gold standard.

Access to inpatient mood management services after stroke in Australian acute and rehabilitation hospitals.

OBJECTIVE: Post-stroke mental health impairments are common, but under-assessed and under-treated. We aim to describe trends in the provision of mood management to patients with stroke, and describe factors associated with adoption of national mood management recommendations for stroke within Australian hospitals. DESIGN: Secondary analysis of cross-sectional data from the biennial Stroke Foundation Audit Program. SETTING: Participating acute (2011-2021) and rehabilitation hospitals (2012-2020) in Australia. PARTICIPANTS: In the acute audit, 22,937 stroke cases were included from 133 hospitals. In the rehabilitation audit, 15,891 stroke cases were included from 127 hospitals. MAIN MEASURES: Hospital- and patient-level mood management processes. RESULTS: Among 133 acute hospitals (22,937 stroke episodes), improvements were made between 2011 and 2021 in utilization of mood screening (17% [2011], 33% [2021]; p < 0.001) and access to psychologists during hospital stay (18% [2011], 45% [2021]; p < 0.001). There was no change in access to a psychologist among those with a mood impairment (p = 0.34). Among 127 rehabilitation hospitals (15,891 stroke episodes) improvements were observed for mood screening (35% [2012], 61% [2020]; p < 0.001), and access to a psychologist during hospital stay (38% [2012], 68% [2020]; p < 0.001) and among those with a mood-impairment (30% [2012], 50% [2020]; p < 0.001). Factors associated with receiving mood management processes included: younger age, not requiring an interpreter and longer length of stay. CONCLUSIONS: Adherence to mood management recommendations has improved over 10 years within Australian hospitals. Those aged over 65, requiring an interpreter, or with shorter hospital stays are at risk of missing out on appropriate mood management.

A Scoping Review of mHealth Interventions for Secondary Prevention of Stroke: Implications for Policy and Practice.

Secondary prevention is a major priority for those living with stroke and may be improved through the use of mobile Health (mHealth) interventions. While evidence for the effectiveness of mHealth interventions for secondary prevention of stroke is growing, little attention has been given to the translation of these interventions into real-world use. In this review, we aimed to provide an update on the effectiveness of mHealth interventions for secondary prevention of stroke, and investigate their translation into real-world use. Four electronic databases and the gray literature were searched for randomized controlled trials of mHealth interventions for secondary prevention of stroke published between 2010 and 2023. Qualitative and mixed-methods evaluations of the trials were also included. Data were extracted regarding study design, population, mHealth technology involved, the intervention, and outcomes. Principal researchers from these trials were also contacted to obtain further translational information. From 1151 records, 13 randomized controlled trials and 4 evaluations were identified; sample sizes varied widely (median, 56; range, 24-4298). Short message service messages (9/13) and smartphone applications (6/13) were the main technologies used to deliver interventions. Primary outcomes of feasibility of the intervention were achieved in 4 trials, and primary outcomes of changes in risk factors, lifestyle behaviors, and adherence to medication improved in 6 trials. Only 1 trial had a hard end point (ie, stroke recurrence) as a primary outcome, and no significant differences were observed between groups. There was evidence for only 1 intervention being successfully translated into real-world use. Further evidence is required on the clinical effectiveness of mHealth interventions for preventing recurrent stroke, and the associated delivery costs and cost-effectiveness, before adoption into real-world settings.

Impact of Early COVID-19 Waves on Cardiac Rehabilitation Delivery in Australia: A National Survey.

BACKGROUND: The novel coronavirus disease of 2019 (COVID-19) pandemic significantly disrupted health care, especially outpatient services such as cardiac rehabilitation (CR). We investigated the impact of early COVID-19 waves on the delivery of Australian CR programs, comparing this time period with usual practice prior to the pandemic (2019) and current practice (2021) once the early waves had subsided. Specifically, we aimed to understand how the delivery of programs during COVID-19 compared to usual practice. METHODS: An anonymous online cross-sectional survey of Australian CR program staff was conducted, comprising three sections: program and respondent characteristics, COVID-19 impact on program delivery, and barriers to, and enablers of, program delivery. Respondents were asked to consider three key timepoints: 1) Pre-COVID-19 (i.e. usual practice in 2019), 2) Early COVID-19 waves (March-December 2020), and 3) Currently, at time of survey completion post early COVID-19 waves (May-July 2021). RESULTS: Of the 314 Australian CR programs, 115 responses were received, of which 105 had complete data, representing a 33% response rate. All states and territories were represented. During early COVID-19 waves programs had periods of closure (40%) or reduced delivery (70%). The majority of programs reported decreased CR referrals (51.5%) and decreased participation (77.5%). The two core components of CR-exercise and education-were significantly impacted during early COVID-19 waves, affecting both the number and duration of sessions provided. Exercise session duration did not return to pre-pandemic levels (53.5 min compared to 57.7 min, p=0.02). The majority of respondents (77%) reported their CR program was inferior in quality to pre-pandemic and more organisational support was required across information technology, staffing, administration and staff emotional and social support. CONCLUSION: Australian CR programs underwent significant change during the early COVID-19 waves, consistent with international CR reports. Fewer patients were referred and attended CR and those who did attend received a lower dose of exercise and education. It will be important to continue to monitor the long-term impacts of the COVID-19 pandemic to ensure CR programs return to pre-pandemic functioning and continue to deliver services in line with best practice and evidence-based recommendations.

Predictors of radial to femoral artery crossover during primary percutaneous coronary intervention in ST-elevation myocardial infarction: A systematic review and meta-analysis.

BACKGROUND: In contrast to traditional femoral artery access, radial artery access for primary percutaneous coronary intervention (PPCI) in ST-elevation myocardial infarction (STEMI) is associated with reduced mortality and bleeding but has higher crossover rates. Therefore, factors associated with crossover warrant exploration as crossover due to technical challenges associated with the radial route may be mitigated. OBJECTIVE: The objective of this study was to identify predictors of radial access failure or crossover to femoral access in PPCI. METHODS: A systematic review and meta-analysis was undertaken according to the Joanna Briggs Institute Systematic Reviews Checklist with searches conducted in Medline, EMBASE, CINAHL, and SCOPUS databases. Inclusion criteria for this study included patients with STEMI; PPCI; and primary research identifying predictors of radial access failures and/or crossovers, published in English, and after 2010. This study was registered with PROSPERO (CRD42020167122). Statistical analysis was performed using IBM SPSS Statistics for Windows version 26.0 (IBM Corp, Armonk, NY) and RevMan version 5.4 (Cochrane Collaboration, London, United Kingdom) with meta-analysis conducted by using the DerSimonian and Laird random-effects method. The National Heart, Lung, and Blood Institute Quality Assessment Tool for Observational Cohort and Cross-Sectional Studies was utilised for quality and risk of bias assessment, with EndNote software used for citations. RESULTS: Eight observational studies met inclusion criteria, comprising 12,621 patients. Risk of bias of these studies was assessed using the National Heart, Lung, and Blood Institute Quality Assessment Tool for Observational Cohort and Cross-Sectional Studies. The mean age was 61.2 ± 12.0 years, and 75.3% were male. Crossover from transradial to transfemoral artery occurred in 529 (4.2%) patients. Reasons for radial access failure included failed puncture (35.3%), peripheral occlusion or tortuosity (24.5%), and radial artery spasm (20.1%). Predictors of crossover included older age (odds ratio [OR], 1.95; 95% confidence interval [CI], 1.44-2.65; p < 0.001), female sex (OR, 2.10; 95% Cl, 1.58-2.80; p < 0.001), weight ≤65 kg (OR, 2.95; 95% CI, 1.95-4.46; p < 0.001), and previous percutaneous coronary intervention (OR, 2.80; 95% Cl, 1.74-4.52; p < 0.001). CONCLUSION: Older age, female sex, weight ≤65 kg, and previous percutaneous coronary intervention were predictors of crossover or failure from the radial to femoral artery. As these predictors are known to be associated with high bleeding and mortality, they should not preclude attempting a radial-first approach in all patients with STEMI. However, as these results were unadjusted, this study warrants further research to thoroughly investigate predictors of radial artery crossover.

Towards better reporting of the proportion of days covered method in cardiovascular medication adherence: A scoping review and new tool TEN-SPIDERS.

Although medication adherence is commonly measured in electronic datasets using the proportion of days covered (PDC), no standardized approach is used to calculate and report this measure. We conducted a scoping review to understand the approaches taken to calculate and report the PDC for cardiovascular medicines to develop improved guidance for researchers using this measure. After prespecifying methods in a registered protocol, we searched Ovid Medline, Embase, Scopus, CINAHL Plus and grey literature (1 July 2012 to 14 December 2020) for articles containing the terms "proportion of days covered" and "cardiovascular medicine", or synonyms and subject headings. Of the 523 articles identified, 316 were reviewed in full and 76 were included (93% observational studies; 47% from the USA; 2 grey literature articles). In 45 articles (59%), the PDC was measured from the first dispensing/claim date. Good adherence was defined as 80% PDC in 61 articles, 56% of which contained a rationale for selecting this threshold. The following parameters, important for deriving the PDC, were often not reported/unclear: switching (53%), early refills (45%), in-hospital supplies (45%), presupply (28%) and survival (7%). Of the 46 articles where dosing information was unavailable, 59% reported how doses were imputed. To improve the transparent and systematic reporting of the PDC, we propose the TEN-SPIDERS tool, covering the following PDC parameters: Threshold, Eligibility criteria, Numerator and denominator, Survival, Presupply, In-hospital supplies, Dosing, Early Refills, and Switching. Use of this tool will standardize reporting of the PDC to facilitate reliable comparisons of medication adherence estimates between studies.

Mixed methods evaluation to explore participant experiences of a pilot randomized trial to facilitate self-management of people living with stroke: Inspiring virtual enabled resources following vascular events (iVERVE).

INTRODUCTION: Despite digital health tools being popular for supporting self-management of chronic diseases, little research has been undertaken on stroke. We developed and pilot tested, using a randomized controlled design, a multicomponent digital health programme, known as Inspiring Virtual Enabled Resources following Vascular Events (iVERVE), to improve self-management after stroke. The 4-week trial incorporated facilitated person-centred goal setting, with those in the intervention group receiving electronic messages aligned to their goals, versus limited administrative messages for the control group. In this paper, we describe the participant experience of the various components involved with the iVERVE trial. METHODS: Mixed method design: satisfaction surveys (control and intervention) and a focus group interview (purposively selected intervention participants). Experiences relating to goal setting and overall trial satisfaction were obtained from intervention and control participants, with feedback on the electronic message component from intervention participants. Inductive thematic analysis was used for interview data and open-text responses, and closed questions were summarized descriptively. Triangulation of data allowed participants' perceptions to be explored in depth. RESULTS: Overall, 27/54 trial participants completed the survey (13 intervention: 52%; 14 control: 48%); and 5/8 invited participants in the intervention group attended the focus group. Goal setting: The approach was considered comprehensive, with the involvement of health professionals in the process helpful in developing realistic, meaningful and person-centred goals. Electronic messages (intervention): Messages were perceived as easy to understand (92%), and the frequency of receipt was considered appropriate (11/13 survey; 4/5 focus group). The content of messages was considered motivational (62%) and assisted participants to achieve their goals (77%). Some participants described the benefits of receiving messages as a 'reminder' to act. Overall trial satisfaction: Messages were acceptable for educating about stroke (77%). Having options for short message services or email to receive messages was considered important. Feedback on the length of the intervention related to specific goals, and benefits of receiving the programme earlier after stroke was expressed. CONCLUSION: The participant experience has indicated acceptance and utility of iVERVE. Feedback from this evaluation is invaluable to inform refinements to future Phase II and III trials, and wider research in the field. PATIENT OR PUBLIC CONTRIBUTION: Two consumer representatives sourced from the Stroke Foundation (Australia) actively contributed to the design of the iVERVE programme. In this study, participant experiences directly contributed to the further development of the iVERVE intervention and future trial design.

Prospective memory impairment in chronic heart failure: a replication study.

Cognitive deficits are common in patients with chronic heart failure (HF), but little attention has been given to the investigation of prospective memory (PM) - the ability to execute delayed intentions. Importantly, many aspects of PM are crucial for patient implementation of HF self-care behaviours. Here we provide a replication of our original work involving PM in patients with HF. We compared a group of 51 HF patients to 41 closely matched controls. The primary outcome measure was a laboratory test of PM, Virtual week, which closely simulates PM tasks in daily life. A series of background cognitive tests were also administered. Consistent with our previous work, the HF group had significant PM impairment compared to controls, and these difficulties were generalised across different types of PM tasks. Surprisingly, we did not find any differences in the background cognitive tasks between groups. Compared to controls, the HF group had significant and similar sized deficits on all task parameters assessed (event, time, regular, irregular) of PM function, which likely impacts engagement in HF self-care.

Perceived control and quality of life among recipients of implantable cardioverter defibrillator.

BACKGROUND: Perceived control is strongly associated with health-related quality of life (HRQOL) among patients with chronic conditions, and it is possible to increase perceived control with appropriate intervention. Little is known about the relationship between perceived control and HRQOL in implantable cardioverter defibrillator (ICD) recipients. OBJECTIVES: To determine the relationship of perceived control with quality of life in ICD recipients and to determine predictors of perceived control in this population. METHODS: A total of 263 ICD recipients (63% male, age 61 ± 14 years) completed the Control Attitude Scale-Revised to measure perceived control and completed self-reported measures on potential correlates of perceived control (i.e., depressive symptoms, anxiety, social support, and ICD concerns). The EuroQol-5D was used to measure HRQOL. Regression analysis was used to determine predictors of perceived control and its relationship to HRQOL, controlling for covariates. RESULTS: Lower perceived control (ß = 0.30, p < .01), and higher levels of depression (ß = -0.30, p < .01) and anxiety (ß = -0.18, p < .05) predicted lower levels of HRQOL. Higher anxiety (ß = -0.17, p < .05), higher depression (ß = -0.23, p < .05), lower social support (ß = 0.26, p < .01), and higher ICD-related concerns (ß = -0.16, p < .05) independently predicted lower perceived control. CONCLUSIONS: Interventions targeting patients' ICD concerns and psychosocial factors before, and continuing after, ICD insertion are needed to improve ICD recipients' perceived control and, in turn, their HRQOL.

Implantable cardioverter defibrillator knowledge and end-of-life device deactivation: A cross-sectional survey.

BACKGROUND: End-of-life implantable cardioverter defibrillator deactivation discussions should commence before device implantation and be ongoing, yet many implantable cardioverter defibrillators remain active in patients' last days. AIM: To examine associations among implantable cardioverter defibrillator knowledge, patient characteristics and attitudes to implantable cardioverter defibrillator deactivation. DESIGN: Cross-sectional survey using the Experiences, Attitudes and Knowledge of End-of-Life Issues in Implantable Cardioverter Defibrillator Patients Questionnaire. Participants were classified as insufficient or sufficient implantable cardioverter defibrillator knowledge and the two groups were compared. SETTING/PARTICIPANTS: Implantable cardioverter defibrillator recipients ( n = 270, mean age 61 ± 14 years; 73% male) were recruited from cardiology and implantable cardioverter defibrillator clinics attached to two tertiary hospitals in Melbourne, Australia, and two in Kentucky, the United States. RESULTS: Participants with insufficient implantable cardioverter defibrillator knowledge ( n = 77, 29%) were significantly older (mean age 66 vs 60 years, p = 0.001), less likely to be Caucasian (77% vs 87%, p = 0.047), less likely to have received implantable cardioverter defibrillator shocks (26% vs 40%, p = 0.031), and more likely to have indications of mild cognitive impairment (Montreal Cognitive Assessment score <24: 44% vs 16%, p < 0.001). Insufficient implantable cardioverter defibrillator knowledge was associated with attitudes suggesting unwillingness to discuss implantable cardioverter defibrillator deactivation, even during the last days towards end of life ( p < 0.05). CONCLUSION: Implantable cardioverter defibrillator recipients, especially those who are older or have mild cognitive impairment, often have limited knowledge about implantable cardioverter defibrillator deactivation. This study identified several potential teachable moments throughout the patients' treatment trajectory. An interdisciplinary approach is required to ensure that discussions about implantable cardioverter defibrillator deactivation issues are initiated at appropriate time points, with family members ideally also included.

Construct validity of the Heart Failure Screening Tool (Heart-FaST) to identify heart failure patients at risk of poor self-care: Rasch analysis.

AIM: The aim of this study was to psychometrically evaluate the Heart Failure Screening Tool (Heart-FaST) via: (1) examination of internal construct validity; (2) testing of scale function in accordance with design; and (3) recommendation for change/s, if items are not well adjusted, to improve psychometric credential. BACKGROUND: Self-care is vital to the management of heart failure. The Heart-FaST may provide a prospective assessment of risk, regarding the likelihood that patients with heart failure will engage in self-care. DESIGN: Psychometric validation of the Heart-FaST using Rasch analysis. METHOD: The Heart-FaST was administered to 135 patients (median age = 68, IQR = 59-78 years; 105 males) enrolled in a multidisciplinary heart failure management program. The Heart-FaST is a nurse-administered tool for screening patients with HF at risk of poor self-care. A Rasch analysis of responses was conducted which tested data against Rasch model expectations, including whether items serve as unbiased, non-redundant indicators of risk and measure a single construct and that rating scales operate as intended. RESULTS: The results showed that data met Rasch model expectations after rescoring or deleting items due to poor discrimination, disordered thresholds, differential item functioning, or response dependence. There was no evidence of multidimensionality which supports the use of total scores from Heart-FaST as indicators of risk. CONCLUSION: Aggregate scores from this modified screening tool rank heart failure patients according to their "risk of poor self-care" demonstrating that the Heart-FaST items constitute a meaningful scale to identify heart failure patients at risk of poor engagement in heart failure self-care.

Detecting and Managing Cognitive Impairment to Improve Engagement in Heart Failure Self-Care.

PURPOSE OF THE REVIEW: The purpose of this review was to examine the recent literature on detecting cognitive impairment in patients with heart failure (HF) and the evidence indicating any ramifications of cognitive impairment on patient engagement in HF self-care. RECENT FINDINGS: Mild cognitive impairment (MCI) is common in HF and impacts on patients' engagement in self-care, yet it is frequently not detected. The use of screening tools, even when brief, improves detection of MCI. However, the most sensitive, specific and feasible screening measure to use in practice is yet to be identified. A full neuropsychological assessment is required to determine a diagnosis of cognitive impairment and to identify the specific areas of cognitive deficit. In patients with HF, there appears to be differing clusters of cognitive deficits. Identification of these deficits may help inform the application of specific cognitive training strategies to ameliorating cognitive changes in HF patients and potentially enhance engagement in self-care. Screening for cognitive impairment is crucial in the management of HF patients to ensure that potential self-care deficits are prevented. The optimal screening tool is yet to be identified.

Factors Related to Self-Care in Heart Failure Patients According to the Middle-Range Theory of Self-Care of Chronic Illness: a Literature Update.

PURPOSE OF THE REVIEW: As described in the theory of self-care in chronic illness, there is a wide range of factors that can influence self-care behavior. The purpose of this paper is to summarize the recent heart failure literature on these related factors in order to provide an overview on which factors might be suitable to be considered to make self-care interventions more successful. RECENT FINDINGS: Recent studies in heart failure patients confirm that factors described in the theory of self-care of chronic illness are relevant for heart failure patients. Experiences and skills, motivation, habits, cultural beliefs and values, functional and cognitive abilities, confidence, and support and access to care are all important to consider when developing or improving interventions for patients with heart failure and their families. Additional personal and contextual factors that might influence self-care need to be explored and included in future studies and theory development efforts.

Randomized controlled trial of family-based education for patients with heart failure and their carers.

AIM: The aim of this study was to evaluate a heart failure education programme developed for patients and carers in Thailand. BACKGROUND: Heart failure is major health problem. This is the first trial of a family-based education programme for heart failure patients and carers residing in rural Thailand. DESIGN: Randomized controlled trial. METHODS: One hundred patient-carer dyads attending cardiac clinics in southern Thailand from April 2014 - March 2015 were randomized to usual care (n = 50) or a family-based education programme (n = 50) comprising face-to-face counselling, a heart failure manual and DVD and telephone support. Assessments of heart failure knowledge, health-related quality of life, self-care behaviours and perceived control were conducted at baseline, three and six months. RESULTS: Linear mixed-effects model revealed that patients and carers who received the education programme had higher knowledge scores at three and six months than those who received usual care. Among those who received the education programme, when compared with those who received usual care, patients had better self-care maintenance and confidence, and health-related quality of life scores at three and six months, and better self-care management scores at six months, whereas carers had higher perceived control scores at three months. CONCLUSION: Addressing a significant service gap in rural Thailand, this family-based heart failure programme improved patient knowledge, self-care behaviours and health-related quality of life and carer knowledge and perceived control.

Dyadic incongruence in chronic heart failure: Implications for patient and carer psychological health and self-care.

AIMS AND OBJECTIVES: To examine whether chronic heart failure patient-carer dyads who disagree about the division of illness management tasks (incongruent) experience poorer psychosocial health and self-care, than those who agree (congruent). BACKGROUND: Informal carers often assist patients with chronic heart failure in the complex management of their illness, but little is known about how relationship dynamics may affect psychosocial health. DESIGN: A prospective cross-sectional study was adopted with a purposeful sample of 25 chronic heart failure patient-carer dyads residing in Australia. METHODS: Data were collected via mail-out questionnaires. Dyads were classified as congruent or incongruent using the Heart Failure Care Assessment Scale. Depression, anxiety, stress and quality of life were assessed in patients and carers. Additionally, self-care and relationship quality were assessed in patients; and burden and esteem were assessed in carers. Differences in congruent and incongruent patient and carer outcomes were examined. RESULTS: Dyads were predominantly spousal and around a third demonstrated incongruence. No significant differences were found between congruent (n = 16) and incongruent (n = 9) dyads, although patients in incongruent dyads tended to have been diagnosed more recently. CONCLUSION: In chronic heart failure patient-carer dyads incongruence exists even for patients with relatively mild chronic heart failure symptoms. These findings indicate that dyadic incongruence in illness management might not affect high-functioning chronic heart failure heart failure patients or their carers. RELEVANCE TO CLINICAL PRACTICE: Given the prevalence of dyadic incongruence and the possibility of further negative outcomes with disease progression, it is important to examine factors such as length of time since diagnosis or type of carer relationship. By implementing self-care education and management strategies that focus on the dyad, rather than the individual, nurses have the potential to improve both patient and carer outcomes.

Diagnostic Accuracy of Cognitive Screening Instruments in Heart Failure: A Systematic Review.

BACKGROUND: Cognitive impairment is prevalent in heart failure (HF) with severe consequences, including increased risk of mortality and reduced ability to self-manage HF symptoms. Identifying cognitive impairment through screening would assist clinicians in managing HF and comorbid cognitive impairment. However, the accuracy of cognitive screening instruments for HF has not been adequately determined. OBJECTIVE: The aim of this study was to determine the diagnostic accuracy of cognitive screening instruments in screening for mild cognitive impairment (MCI) in HF patients. METHODS: A systematic review of major electronic bibliographic databases was searched from January 1999 to June 2013. Inclusion criteria were as follows: primary studies examining cognitive impairment in HF, administration of a cognitive screening instrument and neuropsychological test battery, and cognitive impairment indicated by performance on neuropsychological tests 1.5 SDs less than that of normative data. Methodological rigor of included publications was evaluated using 2 bias risk instruments: QUality Assessment of Diagnostic Accuracy Studies and STAndards for the Reporting of Diagnostic accuracy studies. The precision, accuracy, and receiver operating characteristic curves of the Mini Mental State Examination were computed. RESULTS: From 593 citations identified, 8 publications met inclusion criteria. Risk of bias included selective HF patient samples, and no study examined the diagnostic test accuracy of the cognitive screening instruments. The Mini Mental State Examination had low sensitivity (26%) and high specificity (95%) with a score of 28 or less as the optimal threshold for MCI screening. CONCLUSIONS: Screening for cognitive impairment in HF is recommended; however, future studies need to establish the diagnostic accuracy of screening instruments of MCI in this population.

Carers' views on patient self-care in chronic heart failure.

AIMS AND OBJECTIVES: To examine carers' views on patient self-care in chronic heart failure (CHF). BACKGROUND: Self-care, a key strategy in the long-term management of CHF, can be complex and difficult to master. Carers play a key role in supporting patients in self-care, yet their views on it are rarely sought. DESIGN: A qualitative approach was adopted with a purposeful sample of carers of patients with CHF residing in Australia. METHODS: Carers who identified themselves as providing informal care to a person diagnosed with chronic heart failure were interviewed about their views on patient self-care. Data were collected by face-to-face interviews with a semi-structured interview guide. Qualitative content analysis of the interviews was undertaken by two nurses and one psychologist. RESULTS: Four key themes were identified pertaining to CHF patient self-care: hindrance to engagement; roles and relationships; social support and community engagement and competency. Most carers viewed patients' fatigue and inactivity, mood and coping, and memory loss as major challenges to engagement in self-care. They viewed emotional support and encouragement, independence and organised routines as important aspects of their relationship with the patient and as facilitators of self-care, but also required for themselves support from their families, communities and healthcare professionals. They also viewed patient and carer experience and knowledge as being essential to successful self-care. CONCLUSION: Carers viewed self-care as an important issue for patients with CHF and indicated that they could play an enhanced role with the provision of better support and knowledge from their families, communities and health care professionals. RELEVANCE TO CLINICAL PRACTICE: Carers are closely involved in supporting patients in CHF self-care, even though their views are rarely considered in the organisation and delivery of heart failure management programmes. Therefore, their important contribution should be acknowledged and supported in contemporary heart failure health services.

Prospective memory impairment in chronic heart failure.

Although cognitive deficits are common in patients with chronic heart failure (CHF), no study to date has investigated whether these deficits extend to the capacity to execute delayed intentions (prospective memory, PM). This is a surprising omission given the critical role PM plays in correctly implementing many important CHF self-care behaviors. The present study aimed to provide the first empirical assessment of PM function in people with CHF. The key dependent measure was a laboratory measure of PM that closely simulates PM tasks in daily life - Virtual Week. A group comparison design was used, with 30 CHF patients compared to 30 demographically matched controls. Background measures assessing executive functions, working memory, and verbal memory were also administered. The CHF group exhibited significant PM impairment, with difficulties generalizing across different types of PM tasks (event, time, regular, irregular). The CHF group also had moderate deficits on several of the background cognitive measures. Given the level of impairment remained consistent even on tasks that imposed minimal demands on memory for task content, CHF-related difficulties most likely reflects problems with the prospective component. However, exploratory analyses suggest that difficulties with retrospective memory and global cognition (but not executive control), also contribute to the PM difficulties seen in this group. The implications of these data are discussed, and in particular, it is argued that problems with PM may help explain why patient engagement in CHF self-care behaviors is often poor.

Type II1 factors satisfying the spatial isomorphism conjecture.

This paper addresses a conjecture in the work by Kadison and Kastler [Kadison RV, Kastler D (1972) Am J Math 94:38-54] that a von Neumann algebra M on a Hilbert space H should be unitarily equivalent to each sufficiently close von Neumann algebra N, and, moreover, the implementing unitary can be chosen to be close to the identity operator. This conjecture is known to be true for amenable von Neumann algebras, and in this paper, we describe classes of nonamenable factors for which the conjecture is valid. These classes are based on tensor products of the hyperfinite II(1) factor with crossed products of abelian algebras by suitably chosen discrete groups.