Journal
EUROPEAN JOURNAL OF NEUROLOGY
Volume 14, Issue 8, Pages 917-922Publisher
WILEY
DOI: 10.1111/j.1468-1331.2007.01875.x
Keywords
acute ischaemic stroke; cardiac autonomic balance; functional outcome; heart-rate variability; rehabilitation
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ischaemic stroke has been associated with an impairment of cardiac autonomic balance. The aim of this study was to assess the impact of cardiac autonomic derangement on functional outcome after a rehabilitation program in patients with recent ischaemic stroke. The study population included 85 consecutive first-ever stroke survivors (46 men and 39 women; mean age 60.0 +/- 12.4 years), who underwent 24-h Holter monitoring before the beginning of a 60-day rehabilitation program. Timedomain measures of heart-rate variability (HRV) were considered in all cases. By the end of the rehabilitation program an unfavorable functional outcome with dependency (Barthel Index score of < 75) was found in 44.7% of patients. Multivariate analysis demonstrated that age [odds ratio (OR) 1.09, 95% CI 1.04-1.19, P = 0.002], stroke severity (OR = 1.12, 95% CI 1.01-1.34, P = 0.004), Barthel Index score ( OR 0.92, 95% CI 0.87-0.98, P = 0.01) and Rankin Scale score (OR 3.88, 95% CI 2.13 7.56, P = 0.02) on admission, as well as lower values of the standard deviation of normal-to-normal R wave to R wave (RR) intervals (OR 9.67, 95% CI 2.58-18.67, P = 0.006) were independent predictors of an unfavorable functional outcome. Assessment of HRV before a rehabilitation program may provide additional information on the probability of a functional recovery in stroke survivors.
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