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Updated: Jul 9, 2026

Determining the Functional Status of the Corticospinal Tract Within One Week of Stroke

Determining the Functional Status of the Corticospinal Tract Within One Week of Stroke

Published on: February 22, 2020

Cardiovascular autonomic function in poststroke patients.

M Dütsch¹, M Burger, C Dörfler

¹Department of Neurology, University of Erlangen-Nuremberg, Schwabachanlage 6, 91054 Erlangen, Germany.

|December 12, 2007

Summary

This summary is machine-generated.

Post-stroke patients exhibit reduced parasympathetic cardiac function and increased sympathetic activity, particularly after right-sided strokes. This autonomic imbalance may elevate arrhythmia risk in survivors.

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Area of Science:

Cardiology
Neurology
Autonomic Nervous System Research

Background:

Autonomic dysregulation is common in acute ischemic stroke, with sympathetic-parasympathetic imbalance linked to cardiac arrhythmias.
Limited data exists on cardiovascular autonomic function in the post-acute stroke phase.

Purpose of the Study:

To investigate cardiovascular autonomic function 18 to 43 months after lacunar stroke.
To compare autonomic function between patients with right-sided stroke, left-sided stroke, and healthy controls.

Main Methods:

Continuous monitoring of R-R intervals and mean blood pressure in 15 right-sided stroke patients, 13 left-sided stroke patients, and 21 controls.
Autoregressive spectral analysis used to assess sympathetic and parasympathetic modulation via low-frequency (LF) and high-frequency (HF) power of oscillations.

Main Results:

No significant differences in mean R-R intervals, blood pressure, or respiratory frequency between groups.
Reduced high-frequency (HF) power of R-R intervals observed in both right- and left-sided stroke patients compared to controls (p < 0.05).
Elevated LF/HF ratio of R-R intervals noted in right-sided stroke patients versus controls and left-sided stroke patients (p < 0.05).

Conclusions:

Post-acute stroke patients demonstrate a parasympathetic cardiac deficit, regardless of stroke laterality.
Increased sympathetic cardiovascular modulation was specifically observed in patients with right-sided strokes.
These autonomic alterations may increase the risk of cardiac arrhythmias in post-stroke individuals due to unopposed sympathetic stimulation.