New factors that affect quality of life in patients with aphasia.

BACKGROUND: Aphasia severity is known to affect quality of life (QoL) in stroke patients, as is mood disorders, functional limitations, limitations on activities of daily life, economic status and level of education. However, communication limitation or fatigue has not been explored in this specific population. OBJECTIVE: We aimed to investigate whether these factors were associated with QoL in patients with aphasia after stroke. METHODS: Patients with aphasia were included from April 2014 to November 2017 after a first stroke and were followed for 2 years post-stroke. QoL was assessed at follow-up by the French Sickness Impact Profile 65 (SIP-65). We explored predictors such as mood disorders, communication impairment, fatigue, limitations on activities of daily life, and aphasia severity in addition to socio-demographic factors. RESULTS: We included 32 individuals (22 men; mean age 60.7 [SD 16.6] years) with aphasia after a first stroke. Poor QoL as assessed by the SIP-65 was significantly associated (Pearson correlations) with increased severity of aphasia initially (P=0.008) and at follow-up (P=0.01); increased communication activity limitations at follow-up (P<0.001); increased limitations on activities of daily life at baseline (P=0.008) and follow-up (P<0.001); increased fatigue at follow-up (P=0.001); and increased depression symptoms at follow-up (P=0.001). On multivariable analysis, QoL was associated with communication activity limitations, limitations on activities of daily life, fatigue and depression, explaining more than 75% of the variance (linear regression R2=0.756, P<0.001). The relative importance in predicting the variance was 32% for limitations on activities of daily life, 21% fatigue, 23% depression and 24% communication activity limitations. CONCLUSION: Aphasia severity, mood disorders and functional limitations may have a negative effect on QoL in patients with aphasia. Also, for the first time, we show that fatigue has an important impact on QoL in this population. Specific management of this symptom might be beneficial and should be explored in future studies.

Transcranial direct current stimulation in post-stroke aphasia rehabilitation: A systematic review.

BACKGROUND: Transcranial direct current stimulation (tDCS) is a non-invasive tool that induces neuromodulation in the brain. Several studies have shown the effectiveness of tDCS in improving language recovery in post-stroke aphasia. However, this innovative technique is not currently used in routine speech and language therapy (SLT) practice. OBJECTIVE: This systematic review aimed to summarise the role of tDCS in aphasia rehabilitation. METHODS: We searched MEDLINE via PubMed and Scopus on October 5, 2018 for English articles published from 1996 to 2018. Eligible studies involved post-stroke aphasia rehabilitation with tDCS combined or not with SLT. RESULTS: We retained 5 meta-analyses and 48 studies. Among the 48 studies, 39 were randomised controlled trials (558 patients), 2 prospective studies (56 patients), and 5 case studies (5 patients). Two articles were sub-analyses of a randomised clinical trial. Methods used in these studies were heterogeneous. Only 6 studies did not find a significant effect of tDCS on language performance. As compared with earlier meta-analyses, the 2 latest found significant effects. CONCLUSION: Evidence from published peer reviewed literature is effective for post-stroke aphasia rehabilitation at the chronic stages. tDCS devices are easy to use, safe and inexpensive. They can be used in routine clinical practice by speech therapists for aphasia rehabilitation. However, further studies should investigate the effectiveness in the subacute post-stroke phase and determine the effect of the lesion for precisely identifying the targeted brain areas. We discuss crucial challenges for future studies.

Language features in the acute phase of poststroke severe aphasia could predict the outcome.

BACKGROUND: Aphasia recovery remains difficult to predict initially in particular for the most severe cases. The features of impaired verbal communication which are the basis for cognitive-linguistic diagnosis and treatment could be part of prediction of recovery from aphasia. AIM: This study investigated whether some components of language screening in the acute phase of stroke are reliable prognostic factors for language recovery in the post-acute phase. DESIGN: Monocentric prospective study. SETTING: University hospital stroke unit. POPULATION: Eighty-six patients aged between 21 and 92 years (mean=67.4, SD=15.3) were admitted after a first left hemisphere stroke with aphasia and were consecutively included. METHODS: Language assessment was performed in the acute phase and 3 months post-stroke with the LAnguage Screening Test (LAST) and the Aphasia Severity Rating Scale (ASRS) of the Boston Diagnostic Aphasia Examination (BDAE). Severe aphasia was defined as ASRS<3. Good recovery was defined as an ASRS≥4. Language scores and other potential predictors of recovery were analysed by comparing groups of patients with good versus poor recovery and as predictors of change with multiple regression approaches. RESULTS: LAST Total score as well as all the individual items of LAST, NIHSS and ASRS measured in the acute phase significantly differentiated good and poor recovery from aphasia at three months for all aphasic patients and for the most severe cases. In multivariable analyses the repetition score of LAST at the acute phase was significantly associated with the delta of ASRS between the acute phase and 3 months after the stroke reflecting changes in symptom severity. CONCLUSIONS: For patients with initial severe aphasia, word repetition from a language screening task seems to be a more relevant predictor of recovery than initial severity to enrich the prognosis of poststroke aphasia recovery three month after a stroke. These findings show the importance of phonological perception and production as well as speech motor components in the recovery of language. These linguistic aspects of the assessment seem more relevant than severity for prediction in the acute phase. CLINICAL REHABILITATION IMPACT: These findings could improve aphasia management pathway for people with severe aphasia and their families and minimize the evidence-practice gap for speech pathologists.