Cardiovascular autonomic function in poststroke patients

被引:119
作者
Duetsch, M. [2 ]
Burger, M. [2 ]
Doerfler, C. [2 ]
Schwab, S. [2 ]
Hilz, M. J. [1 ,2 ]
机构
[1] NYU, Sch Med, Dept Neurol, New York, NY 10016 USA
[2] Univ Erlangen Nurnberg, Dept Neurol, D-91054 Erlangen, Germany
关键词
D O I
10.1212/01.wnl.0000286946.06639.a7
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Background: Autonomic dysregulation is frequent in acute ischemic stroke. Several studies concluded that imbalance between sympathetic and parasympathetic cardiovascular function predisposes to malignant cardiac arrhythmia. However, there are few data on cardiovascular autonomic function in post-acute stroke patients. Objective: To study cardiovascular autonomic function 18 to 43 months after lacunar stroke. Patients and Methods: We continuously monitored R-R intervals (RRint), mean blood pressure (BP mean), and respiration in 15 patients (8 women, aged 43 to 73 years) after right-sided stroke, in 13 patients (7 women, aged 50 to 75 years) after left-sided stroke, and in 21 age- and sex-matched controls at rest. We used autoregressive spectral analysis to assess sympathetic and parasympathetic modulation as powers of RRint and BPmean oscillations in the low-frequency (LF: 0.04 to 0.15 Hz) and high-frequency bands (HF: 0.15 to 0.5 Hz). Results: Mean values of RRint, BPmean, and respiratory frequency did not differ between patients after right- or left-sided stroke and controls (p > 0.05). Patients after right- sided stroke showed a trend toward elevated LF power of RRint as compared with patients after left-sided stroke and controls ( p < 0.10). HF powers of RRint were reduced in patients after right- and left-sided stroke as compared with controls ( p < 0.05). LF/HF ratio of RRint was elevated in patients after right-sided stroke as compared with patients after left-sided stroke and controls (p < 0.05). Conclusion: Irrespective of the side of the ischemia, post-acute stroke patients showed a parasympathetic cardiac deficit. Additionally, sympathetic cardiovascular modulation was increased in patients after right- sided stroke. Post-acute stroke patients might be at an increased risk for cardiac arrhythmia after unopposed sympathetic stimulation.
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页码:2249 / 2255
页数:7
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