Better Understanding of Fatigue After STroke

Stroke is worldwide the second most common cause of death following heart attack and the leading cause of disability. Post-stroke fatigue (PSF) is a common complication after stroke and can be defined as 'an overwhelming exhaustion or tiredness, not related to exertion, which does not typically improve with rest'. Fatigue following stroke can be divided into early (\< 3 months) and late (\> 3 months) fatigue. PSF can have a considerable impact on a person's everyday activities and quality of life, participation in the rehabilitation process and levels of caregiver burden. Yet no efficient treatment exists to prevent or cure PSF because the pathophysiology remains unclear and seems to be multifaceted. Autonomic dysfunction is a common complication after stroke, associated with higher morbidity and mortality. An easy tool to measure the function of the autonomic nervous system (ANS) is heart rate variability (HRV), which is defined as the beat-to-beat variation of the heart rate (= interbeat interval (IBI)). It is the result of alterations in the sympathetic and parasympathetic nervous system. In recent systematic reviews, authors stipulate that HRV can be regarded as a prognostic factor for short- and long-term stroke outcomes. HRV can be derived from 24 hours, 5 minutes (short-term) and \< 5 minutes (ultra-short-term) measurements by applying time-domain and frequency-domain indices. Autonomic dysfunction has been related to chronic fatigue syndrome, in addition to fatigue …

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Anissa Ourtani, MD  ·  3224754819  ·  Anissa.OURTANI@chu-brugmann.be

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