RESUMO
Background: Stroke, even when minor, increases the risk of dementia. We aimed to determine whether patients with transient ischaemic attack (TIA) exhibit higher rates of cerebral and regional atrophy 1-year after first stroke symptoms and evaluate the relationship with small vessel disease and cognitive performance. Methods: TIA patients and controls without cognitive symptoms underwent high-resolution T1-weighted MRI and cognitive testing at baseline and 1-year. Percent brain volume change (PBVC) was measured, and the location of regional atrophy and small vessel disease (CSVD) burden was evaluated. Neuropsychological testing assessed memory, processing speed, and executive function. Results: A total of 76 TIA patients and 53 controls of mean age 67 (SD = 8) and 68 years (SD = 8) were recruited. TIA patients demonstrated greater improvement of visual memory and executive function at 1-year. TIA patients had greater median PBVC/year compared to controls (-0.79% [(-1.22)-(-0.38)] vs. -0.41% [(-0.62)-0.19]; p < 0.001), and higher rates of volume loss (ml/year) in subcortical gray (-0.53 [(-1.09)-(-0.06)] vs. -0.13 [(-0.61)-0.31]; p < 0.05) and white matter (-2.21 [-5.47, 0.40] vs. -0.93 [(-3.43)-2.10]; p < 0.05). Linear regression showed that TIA, age, and systolic blood pressure (SBP) were associated with greater cerebral volume loss over 1-year. There was no significant relationship between PBVC and 1-year cognition. Conclusion: A near two-fold increase in rate of cerebral atrophy 1-year after TIA is associated with higher SBP emphasizing the need for improved treatment of SBP. Cerebral and regional atrophy rates may be used to select patients for vascular risk reduction trials or novel therapeutics in future dementia prevention trials.
RESUMO
OBJECTIVES: Social isolation and loneliness affect the quality of life of people living with dementia, yet few interventions have been developed for this population. The purpose of this study was to assess the feasibility and acceptability of 'Connecting Today', a remote visiting program designed for use with care home residents living with dementia. METHODS: This was a feasibility study to assess whether Connecting Today can be delivered in care homes, and was acceptable to family and friends and people living with dementia. We used a single-group before/after design and included residents ≥ 65 years old with a dementia diagnosis from two care homes in Alberta, Canada. Connecting Today involved up to 60 min per week of facilitated remote visits for 6 weeks. To understand feasibility, we assessed rates and reasons for non-enrollment, withdrawal and missing data. We assessed acceptability with the Observed Emotion Rating Scale (residents) and a Treatment Perception and Preferences Questionnaire (family and friends). Data were analyzed with descriptive statistics. RESULTS: Of 122 eligible residents, 19.7% (n = 24) enrolled (mean age = 87.9 years, 70.8% females). Three residents withdrew from the study before the first week of calls. Among 21 remaining residents, 62%-90% completed at least 1 call each week. All the calls were completed by videoconference, rather than by phone. Alertness and pleasure were observed for ≥92% of residents during calls. The 24 contacts rated Connecting Today as logical, effective and low risk. CONCLUSIONS: Facilitated, remote visits are feasible and highly acceptable to residents and their family and friend contacts. Connecting Today shows promise to address social isolation and loneliness for people living with moderate to severe dementia because it can promote positive engagement in meaningful interactions with their family and friends while they are living in a care home. Future studies will test effectiveness of Connecting Today in a large sample.