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Serial heart rate variability testing for the evaluation of autonomic dysfunction after stroke
Zaid Al-Qudah1, Hussam A Yacoub2, Nizar Souayah1
1Neurological Institute of New Jersey, Rutgers, The State University of New Jersey, Newark, NJ, USA.
Journal of Vascular and Interventional Neurology
|January 8, 2015
Summary
Cardiac autonomic dysfunction is common after stroke. Heart rate variability (HRV) testing can help monitor recovery and assess stroke dynamics, showing improvement as patients improve.
Area of Science:
- Neurology
- Cardiology
- Physiology
Background:
- Autonomic dysfunction is a frequent stroke complication affecting multiple systems.
- Cardiac autonomic dysfunction post-stroke is linked to increased mortality and morbidity.
Purpose of the Study:
- To investigate cardiac autonomic dysfunction following stroke.
- To assess the utility of heart rate variability (HRV) as a marker for stroke recovery.
Main Methods:
- Reported two stroke cases: one hemorrhagic, one ischemic.
- Monitored heart rate variability (HRV) during hospitalization.
- Observed clinical status and HRV changes over time.
Main Results:
- Both patients exhibited autonomic dysfunction with reduced HRV post-stroke.
- HRV normalization occurred weeks after stroke onset.
- Clinical status dramatically improved in parallel with HRV normalization.
Conclusions:
- Serial HRV testing is a noninvasive tool for monitoring acute stroke dynamics.
- HRV changes correlate with clinical recovery after stroke.
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