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Lithium anodes show great promise in commercial applications, but are hindered by lithium plating and dendrite growth which cause safety concerns during long‐term cell operation. Stack pressure is experimentally observed to improve cell lifetime; however, the relationship between stress and lithium deposition has remained difficult to elucidate. In this work, a transient, 3D, finite‐element model of the evolution of a lithium anode due to stripping and plating is developed. The evolution of a microscale protrusion on the anode surface is tracked over one charge‐discharge cycle with respect to stack pressure and lithium yield strength. Lithium plastic deformation, nonconformal anode‐separator contact, and separator porosity effects are accounted for. Over the course of several hours of stripping/plating, the anode surface evolves to a similar morphology under pressure regardless of the initial conditions due to lithium plastic deformation and hardening. The rate of this evolution highly depends on the applied pressure and assumed lithium yield strength. [ABSTRACT FROM AUTHOR]

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Aims To assess whether a programme of nurse education increased the frequency with which nurses conducted foot checks on people with diabetes undergoing haemodialysis and to evaluate whether this influenced self-reported foot care behaviour. Methods A non-randomized stepped-wedge design was used to evaluate a nurse education programme implemented in four UK National Health Service dialysis units. People with diabetes undergoing haemodialysis were invited to complete a questionnaire on the frequency of foot examination by health professionals, on the presence of foot problems and on their own foot care behaviour, using the Nottingham Assessment of Functional Foot-care (NAFF). An education session for nurses, including procedures for foot examination, was conducted sequentially in each of four haemodialysis units. The questionnaire was repeated at 2-monthly intervals. Results The education session resulted in a significant increase in the reported number of foot examinations by nurses ( P = 0.007). There was also a significant improvement in reported foot care behaviour ( P < 0.001), but this occurred between the first and second 2-monthly assessments and was unrelated to the timing of the intervention. Conclusions A single education session can improve the routine checking of the feet of people with diabetes undergoing haemodialysis. The administration of the Nottingham Assessment of Functional Foot-care questionnaire was associated with improved self-reported foot care behaviour, reflecting greater awareness of risk in this population. [ABSTRACT FROM AUTHOR]

Purpose. There are few validated measures to assess mood in stroke patients and even fewer suitable for all stroke patients, including those with communication problems. The aim of this study was to compare the Stroke Aphasic Depression Questionnaire Hospital version (SADQ-H), Signs of Depression Scale (SODS), Visual Analogue Mood Scale (VAMS) and Visual Analogue Self-esteem Scale (VASES) in screening for mood problems after stroke. Methods. Fifty healthy older adults and 100 stroke patients in hospital completed the VAMS and VASES. A nurse completed the SADQ-H and SODS in relation to the stroke patients. A relative/carer completed the SADQ-H and SODS in relation to the healthy older adults. Those without communication problems also completed the Hospital Anxiety and Depression Scale (HADS). Results. The internal consistency of the scales was low in healthy older adults. In stroke patients the internal consistency of the SADQ-H, VAMS, and VASES was high (α = .71-:84) but that of the SODS was low (α = .53). In healthy older adults, correlations between the HADS and the VAMS and VASES were high but low between the HADS and SADQ-H and SODS. In stroke patients, the HADS depression scale correlated significantly with all the scales (0.35-0.55) but only the SADQ-H 10, VAMS, and VASES were significantly correlated with the HADS anxiety scale (0.40-0.52). Appropriate cut-offs were found for the SADQ-H (17/18), SADQ-H 10 (5/6), SODS (1/2), and VAMS 'sad' item (22/23) in comparison to depression on the HADS. No appropriate cut-offs were identified in comparison to anxiety on the HADS. Conclusions. The SADQ-H, SADQ-H10 and SODS were all appropriate for screening for possible depression after stroke but not for screening for possible anxiety. The SADQ-H 10 had greater internal consistency and higher sensitivity and specificity than the SODS and is shorter than the SADQ-H. It was also significantly correlated with both the anxiety and depression scales of the HADS. The SADQ-H 10 was therefore recommended as the most appropriate for screening purposes. The VAMS and VASES provided no clear cut-offs for use in screening but scores were highly [ABSTRACT FROM AUTHOR]

Objectives: To assess the Brief, Repeatable Battery of Neuropsychological Tests (BRB-N) as a screening measure for memory problems in people with multiple sclerosis (MS)., Design: Sensitivity and specificity values were calculated and Receiver Operating Characteristic (ROC) curves plotted., Methods: Patients were recruited from the regional MS Management Clinic. The BRB-N and WMS-R were administered., Results: Using the Symbol Digit Modalities Test (SDMT) and 10/36 Spatial Recall Test (10/36 SRT) Total Immediate recall, the BRB-N had a sensitivity of 93% and specificity of 48%., Conclusion: The BRB-N is sensitive at detecting memory impairments, although its specificity is low.

The Indented Paragraph reading test has been presented as a useful screening test for identifying hemispatial neglect, as it has been reported to be more sensitive to mild neglect than text with a predictable format (Caplan, 1987). The number of errors made by 42 right hemisphere-damaged stroke subjects on this test was compared with their performance on text with straight margins and unpredictable text, where both right and left margins were irregularly indented. The inter-rater reliability of the paragraphs was checked for 23 subjects. The scores from the three paragraphs were significantly correlated, and all were able to detect mild neglect. Inter-rater reliability was higher when identifying moderate and severe levels of neglect than mild neglect. Performance on the Indented Paragraph was also compared with that on the Star Cancellation and Article Reading subtests of the Behavioural Inattention Test in a separate group of 56 right hemisphere stroke subjects and found to classify patients differently.

The aim of this study was to examine the relationship between subjective memory and objective assessment using a test designed to reflect daily life memory skills, the Rivermead Behavioural Memory Test (RBMT). A total of 78 patients was assessed seven months after a stroke. Each patient completed a questionnaire about memory problems experienced in daily life. A relative or close friend completed the same questionnaire about the patient. Each patient was assessed on the RBMT and some conventional memory tests. Questionnaire responses were more highly correlated with the RBMT than with conventional tests of memory.

To determine the inter-rater reliability of scoring the Rey figure copying test, two raters independently scored copies of version B of the Rey figure completed by 17 non-brain damaged general medical patients and 23 stroke patients. There was very high agreement between the total scores for each patient (rs = 0.99, P less than 0.001) and there was agreement for all patients as to whether these scores were within the normal range. It is concluded that, though subjective, the standard system for scoring the Rey figure copying test can be reliable between raters.