Neuropsychological Changes of Cognitive Reverters after Stroke Based on the Montreal Cognitive Assessment (MoCA) with a Double Threshold

Background Cognitive function is dynamic in post-stroke patients, however, there are limited studies on cognitive recovery after stroke. The definition of cognitive reverters and neuropsychological characteristics according to various definitions have not yet been investigated. Objective To investigate the neuropsychological characteristics of cognitive reverters after stroke based on the traditional definition and new definition according to Montreal Cognitive Assessment (MoCA) with a double threshold. Methods A total of 163 patients hospitalized for first onset acute ischemic stroke were recruited from the Department of Neurology of the Second Hospital of Hebei Medical University from December 2020 to February 2022 as the study subjects. All patients were assessed for cognitive function in the acute period of ischemic stroke using the MoCA at baseline. Cognitive function was assessed again at the 6-month post-stroke follow-up with the detailed neuropsychological tests refined at the same time, including the digit span task (DST) , Stroop color and word test (SCWT) , Chinese version of Boston naming test (BNT) , verbal fluency test (VFT) , clock drawing test (CDT) , and auditory verbal learning test (AVLT) . The enrolled patients were divided into the M1 group (MoCA scores