Comparison of neuropsychological characteristics inpatients with amnestic and vascular mild cognitive impairment

Abstract

Objective To identify the differences inneuropsychological characteristics between amnestic(AMCI)and vascular mild cognitive impairment(VMCI). Methods Totally 297 old community residents with mild cognitive impairment(MCI)were divided into amnestic MCI(AMCI)and vascular MCI(VMCI)subgroup from Guangzhou MCI prevalence survey.The elderly with MCI were interviewed and tested with the Chinese version of Montreal Cognitive Assessment(MoCA), the Mini-Mental state examination(MMSE), Auditory Verbal Learning Test(AVLT), the Clinical Dementia Rating scale(CDR), Functional Activity Questionnaire(FAQ), the Modified Hachinski Ischemic Scale(M-HIS), Center for Epidemiologic Studies(CES-DC)to evaluate neuropsychological characteristics. Results AMCI versus VMCI group showed that the total scores of MoCA were(9.63±5.17 vs.9.98±6.02), total scores of MMSE were(16.90±4.84 vs.16.90±6.19), AVLT immediate memory was(2.35±1.39 vs.2.91±1.84), AVLT delayed recall was(2.23±2.09 vs.2.47±2.20), AVLT delayed recognition was(7.33±3.98 vs.6.85±4.02)and total scores of CDR(0.5 vs.0.5), with no differences between the 2 groups(all P>0.05). Based on MoCA survey, AMCI versus VMCI group showed statistically significant differences(all P<0.05)in parameters of visual space and execution(0.71±1.02 vs.0.92±1.26), language function(0.34±0.56 vs.0.50±0.80)and abstract thinking(0.25±0.49 vs.0.15±0.43), but based on MMSE survey, no difference was found in the various cognitive domains between the two groups.The AMCI versus VMCI group showed statistically significant differences(all P<0.05)in parameters of CES-DC scale(1.75±4.27 vs.2.76±6.72), FAQ scale(4.42±4.66 vs.8.71±7.03), M-HIS scale(0.40±0.64 vs.7.59±3.53). Conclusions There is no significant difference in general cognitive impairment between AMCI and VMCI, but the visual space and execution, language function are more impaired in AMCI than VMCI, and the abstract thinking, social function are more impaired with more depressive symptoms in VMCI than in AMCI. Key words: Cognition disorders; Neuropsychological tests; Amnesia; Blood vessels