Are bipolar II patients cognitively impaired? A systematic review.
نویسندگان
چکیده
BACKGROUND There is evidence that bipolar disorder (BD) is associated with significant neurocognitive deficits and this occurs in individuals with BD type I (BD I) and with BD type II (BD II). Only a few studies have focused on cognitive impairment in BD II. The aim of this study was to describe the pattern of cognitive impairment in patients with BD II, in order to identify specific cognitive deficits that distinguish BD II from BD I patients as well as from healthy subjects. METHOD We performed a systematic review of the literature of neuropsychological studies of BD II published between 1980 and July 2009. Fourteen articles fulfilled the inclusion criteria and were included in this review. RESULTS Main cognitive deficits found in BD II include working memory and some measures of executive functions (inhibitory control) and approximately half of the studies also detected verbal memory impairment. CONCLUSIONS There are subtle differences between the two subtypes regarding cognition. This may suggest neurobiological differences between the two subgroups which will be helpful in order to determine cognitive endophenotypes in BD subtypes.
منابع مشابه
Neurocognitive function in bipolar disorder: a comparison between bipolar I and II disorder and matched controls
BACKGROUND Cognitive deficits have been documented in patients with bipolar disorder. Further, it has been suggested that the degree and type of cognitive impairment differ between bipolar I and bipolar II disorder, but data is conflicting and remains inconclusive. This study aimed to clarify the suggested differences in cognitive impairment between patients with bipolar I and II disorder in a ...
متن کاملStructural and Functional Brain Correlates of Cognitive Impairment in Euthymic Patients with Bipolar Disorder
INTRODUCTION Cognitive impairment in the euthymic phase is a well-established finding in bipolar disorder. However, its brain structural and/or functional correlates are uncertain. METHODS Thirty-three euthymic bipolar patients with preserved memory and executive function and 28 euthymic bipolar patients with significant memory and/or executive impairment, as defined using two test batteries,...
متن کاملClinical features, comorbidity, and cognitive impairment in elderly bipolar patients
INTRODUCTION Data specific to late-life bipolar disorder (BD) are limited. Current research is sparse and present guidelines are not adapted to this group of patients. OBJECTIVES We present a literature review on clinical characteristics, comorbidities, and cognitive impairment in patients with late-life BD. This review discusses common comorbidities that affect BD elders and how aging might ...
متن کاملCholinesterase-inhibitor Associated Mania: A Case Report and Literature Review.
Neuropsychiatric symptoms (NPS) are common in the middle to late stages of Alzheimer’s dementia (AD), but can also present in the Mild Cognitive Impairment (MCI) phase. Since the pathophysiology of AD involves deficits in central cholinergic neurotransmission, cholinesterase inhibitors (CHEIs) are effective in treating its cognitive symptoms. Interestingly, case studies have reported the onset ...
متن کاملSystematic review on the inclusion of patients with cognitive impairment in hip fracture trials: a missed opportunity?
BACKGROUND More than 320 000 hip fractures occur annually in North America. An estimated 30% of this population have cognitive impairment. We sought to determine the extent to which patients with cognitive impairment or dementia have been included in randomized controlled trials (RCTs) assessing hip fracture management. METHODS We conducted a systematic search of 3 electronic journal database...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Psychological medicine
دوره 41 9 شماره
صفحات -
تاریخ انتشار 2011