Cognitive impairment in aneurysmal subarachnoid hemorrhage patients with delayed cerebral infarction: prevalence and pattern. 2015

Alberto Chi Ho Chu, and George Kwok Chu Wong, and Sandy Wai Lam, and Adrian Wong, and Karine Ngai, and Wai Sang Poon, and Vincent Mok
Division of Neurosurgery, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, 4/F Clinical Science Building, 30-32 Ngan Shing Street, Shatin, NT, Hong Kong SAR, China.

BACKGROUND Cognitive deficits commonly occur after aneurysmal subarachnoid hemorrhage (aSAH) and clinical understanding is important for treatment and rehabilitation. Delayed cerebral infarction was shown to be related to poor outcome. Data on delayed cerebral infarction-related cognitive impairment were lacking. OBJECTIVE We investigated the prevalence and pattern of delayed cerebral infarction-associated cognitive impairment. METHODS We carried out a prospective observational and diagnostic accuracy study in Hong Kong in patients aged 21-75 years with aSAH who had been admitted within 96 h of ictus. The domain-specific neuropsychological assessment battery at 1 year after ictus was used for cognitive assessments. A cognitive domain deficit was defined as a cognitive domain z score less than -1.65 (below the fifth percentile). Cognitive impairment was defined by two or more cognitive domain deficits. The current study is registered at ClinicalTrials.gov of the U.S. National Institutes of Health (NCT01038193). RESULTS One hundred and twenty aSAH patients were recruited. Patients with delayed cerebral infarction (DCI) have cognitive impairment more frequently (22 % vs 11 %; odds ratio: 2.2, 0.6 to 7.8, p = 0.192). Cognitive domain deficits commonly affected in aSAH patients with delayed cerebral infarction were verbal memory, language, and visuospatial memory and skill domains, and were relatively uncommon in aSAH patients without delayed cerebral infarction. CONCLUSIONS In patients with aSAH, delayed cerebral infarction was associated with a specific pattern of cognitive domain deficits. The pathophysiology should be further investigated.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009483 Neuropsychological Tests Tests designed to assess neurological function associated with certain behaviors. They are used in diagnosing brain dysfunction or damage and central nervous system disorders or injury. Aphasia Tests,Cognitive Test,Cognitive Testing,Cognitive Tests,Memory for Designs Test,Neuropsychological Testing,AX-CPT,Behavioral Assessment of Dysexecutive Syndrome,CANTAB,Cambridge Neuropsychological Test Automated Battery,Clock Test,Cognitive Function Scanner,Continuous Performance Task,Controlled Oral Word Association Test,Delis-Kaplan Executive Function System,Developmental Neuropsychological Assessment,Hooper Visual Organization Test,NEPSY,Neuropsychologic Tests,Neuropsychological Test,Paced Auditory Serial Addition Test,Repeatable Battery for the Assessment of Neuropsychological Status,Rey-Osterrieth Complex Figure,Symbol Digit Modalities Test,Test of Everyday Attention,Test, Neuropsychological,Tests, Neuropsychological,Tower of London Test,Neuropsychologic Test,Test, Cognitive,Testing, Cognitive,Testing, Neuropsychological,Tests, Cognitive
D011446 Prospective Studies Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group. Prospective Study,Studies, Prospective,Study, Prospective
D002544 Cerebral Infarction The formation of an area of NECROSIS in the CEREBRUM caused by an insufficiency of arterial or venous blood flow. Infarcts of the cerebrum are generally classified by hemisphere (i.e., left vs. right), lobe (e.g., frontal lobe infarction), arterial distribution (e.g., INFARCTION, ANTERIOR CEREBRAL ARTERY), and etiology (e.g., embolic infarction). Anterior Choroidal Artery Infarction,Cerebral Infarct,Infarction, Cerebral,Posterior Choroidal Artery Infarction,Subcortical Infarction,Cerebral Infarction, Left Hemisphere,Cerebral Infarction, Right Hemisphere,Cerebral, Left Hemisphere, Infarction,Cerebral, Right Hemisphere, Infarction,Infarction, Cerebral, Left Hemisphere,Infarction, Cerebral, Right Hemisphere,Infarction, Left Hemisphere, Cerebral,Infarction, Right Hemisphere, Cerebral,Left Hemisphere, Cerebral Infarction,Left Hemisphere, Infarction, Cerebral,Right Hemisphere, Cerebral Infarction,Right Hemisphere, Infarction, Cerebral,Cerebral Infarctions,Cerebral Infarcts,Infarct, Cerebral,Infarction, Subcortical,Infarctions, Cerebral,Infarctions, Subcortical,Infarcts, Cerebral,Subcortical Infarctions
D003072 Cognition Disorders Disorders characterized by disturbances in mental processes related to learning, thinking, reasoning, and judgment. Overinclusion,Disorder, Cognition,Disorders, Cognition
D005260 Female Females
D006723 Hong Kong The former British crown colony located off the southeast coast of China, comprised of Hong Kong Island, Kowloon Peninsula, and New Territories. The three sites were ceded to the British by the Chinese respectively in 1841, 1860, and 1898. Hong Kong reverted to China in July 1997. The name represents the Cantonese pronunciation of the Chinese xianggang, fragrant port, from xiang, perfume and gang, port or harbor, with reference to its currents sweetened by fresh water from a river west of it. Kowloon,New Territories,Hongkong
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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