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Pre-existing dementia among patients with acute stroke is common, and adversely affects outcomes. Only a few studies have been published on prestroke dementia (PSD), none of which have investigated a consecutive stroke cohort in an Asian patient population. The objective of this study was to examine the prevalence and clinical correlates of PSD in Chinese(More)
BACKGROUND Fatigue is common in stroke survivors. Lesion location may influence the risk of poststroke fatigue (PSF) but it is uncertain whether location has an impact on the prognosis of PSF. This study examined the association between PSF outcome and infarct location. METHODS The study sample comprised 435 Chinese patients with acute ischemic stroke(More)
OBJECTIVES Although stroke associated with small vessel disease (SSVD) can induce both motor and cognitive impairment, the latter has received less attention. We aimed to evaluate the frequency of the varying severity levels of cognitive impairment, the determinants of severe cognitive impairment, and the association of cognitive impairment with functional(More)
Acute catatonic syndromes occurring in the context of various medical and neuropsychiatric conditions, including schizophrenia, have been shown to respond well to benzodiazepines (BZD). However, there have been no studies specifically designed to address the BZD treatment response of persistent catatonic states. Eighteen patients with clinically stable(More)
OBJECTIVE Both cognitive impairment and depressive symptoms have been reported in ketamine users. However, no previous study has examined the relationship between them. This study aimed to examine cognitive functions and depressive symptoms and their relationship in young ketamine users in Hong Kong. METHOD Fifty-one current ketamine users, 49 ex-ketamine(More)
RATIONALE Cognitive impairment has been found to be reversible in people with substance abuse, particularly those using ketamine. Ketamine users are often poly-substance users. This study compared the cognitive functions of current and former ketamine users who were also abusing other psychoactive substances with those of non-users of illicit drugs as(More)
OBJECTIVE Despite extensive research on post-stroke depression (PSD), the role of white matter hyperintensities (WMHs) in its pathogenesis remains uncertain. The aim of this study was to evaluate the relationship between WMHs and PSD in Chinese patients with first or recurrent stroke. METHODS A cohort of 994 patients with acute ischaemic stroke admitted(More)
Lesions located in the basal ganglia (BG) are thought to be involved in the fatigue observed in neurological disorders. However, the significance of the location of infarcts in poststroke fatigue (PSF) is unknown. This study examined the association between BG infarcts and PSF. A total of 334 Chinese patients with acute ischemic stroke consecutively(More)
OBJECTIVE Although age-related confluent white-matter lesion (WML) is an important substrate for cognitive impairment, the mechanisms whereby WML induces cognitive impairment are uncertain. The authors investigated cognitive predictors in patients with confluent WML. METHODS Among 100 patients with ischaemic stroke with confluent WML on MRI, the authors(More)
BACKGROUND Rapid eye movement (REM) sleep behavior disorder (RBD) is a sleep disturbance in which patients enact their dreams while in REM sleep. The behavior is typically violent in association with violent dream content, so serious harm can be done to the patient or the bed partner. The prevalence of RBD is well-known in Parkinson's disease, Lewy body(More)