Pervasiveness of Communication Disorders and Fatigue in Stroke Patients: A Systematic Scoping Review
After a stroke, it is highly likely that an individual will experience substantial fatigue that can significantly affect recovery and function; stroke survivors also have more than a 50% chance of having at least one communication disorder. Current reviews of post-stroke fatigue have not provided evidence focused on communication disorders or the potential influence they may have on post-stroke fatigue and related recovery. The aim of this review was to determine how communication disorders are represented in post-stroke fatigue research and to catalogue methods used to identify communication disorders and measure fatigue. A systematic scoping review was conducted to identify studies measuring post-stroke fatigue. To identify these studies, a comprehensive literature search was conducted using relevant databases and grey literature sources, followed by several stages of review that adhered to PRISMA guidelines. We evaluated these studies using pre-established eligibility criteria and extracted data regarding the inclusion/exclusion of persons with communication disorders and the assessment methods used. The scoping review analysis was conducted on 161 studies. Of these, 41 (26%) excluded all communication disorders, 71 (44%) excluded severe communication disorders, and 49 (30%) included participants with communication disorders. Of the 120 studies that did not explicitly exclude all communication disorders, only 34 were confirmed to report data from at least one person with a communication disorder. Further, only 5 studies reported data that could be used to determine a relationship between these co-morbidities. Persons with communication disorders are underrepresented in post-stroke fatigue research and very few studies have examined the relationship between post-stroke fatigue and communication disorders, limiting conclusions that can be drawn. This is problematic because medical professionals relying on this evidence to guide clinical practice are likely to be treating individuals with co-occurring fatigue and communication disorders and the current research does not provide enough information about the potential impact of fatigue on communication disorders or vice versa. To bridge this gap, we suggest methods of assessment that could provide ways to more accurately 1) reflect the real patient population in post-stroke fatigue studies, and 2) measure and document fatigue in post-stroke communication disorder studies.