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. 2012 Sep 4;79(10):981-7.
doi: 10.1212/WNL.0b013e31826845e9. Epub 2012 Aug 8.

Prevalence and significance of stroke symptoms among patients receiving maintenance dialysis

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Prevalence and significance of stroke symptoms among patients receiving maintenance dialysis

Manjula Kurella Tamura et al. Neurology. .

Abstract

Objective: The purpose of this cross-sectional study was to determine the prevalence and potential significance of stroke symptoms among end-stage renal disease (ESRD) patients without a prior diagnosis of stroke or TIA.

Methods: We enrolled 148 participants with ESRD from 5 clinics. Stroke symptoms and functional status, basic and instrumental activities of daily living (ADL, IADL), were ascertained by validated questionnaires. Cognitive function was assessed with a neurocognitive battery. Cognitive impairment was defined as a score 2 SDs below norms for age and education in 2 domains. IADL impairment was defined as needing assistance in at least 1 of 7 IADLs.

Results: Among the 126 participants without a prior stroke or TIA, 46 (36.5%) had experienced one or more stroke symptoms. After adjustment for age, sex, race, education, language, diabetes, and cardiovascular disease, participants with stroke symptoms had lower scores on tests of attention, psychomotor speed, and executive function, and more pronounced dependence in IADLs and ADLs (p ≤ 0.01 for all). After adjustment for age, sex, race, education, language, diabetes, and cardiovascular disease, participants with stroke symptoms had a higher likelihood of cognitive impairment (odds ratio [OR] 2.47, 95% confidence interval [CI] 1.03-5.92) and IADL impairment (OR 3.86, 95% CI 1.60-9.28).

Conclusions: Stroke symptoms are common among patients with ESRD and strongly associated with impairments in cognition and functional status. These findings suggest that clinically significant stroke events may go undiagnosed in this high-risk population.

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Figures

Figure 1
Figure 1. Prevalence and type of stroke symptoms among dialysis participants without a history of stroke or TIA
Figure 2
Figure 2. Association of stroke symptoms with cognitive impairment and instrumental activities of daily living (IADL) impairment among dialysis participants
The multivariable models are adjusted for age, sex, race, education, language, diabetes, and cardiovascular disease. Cognitive impairment adjusted model c = 0.75. IADL impairment adjusted model c = 0.69.

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