期刊
PSYCHOLOGICAL MEDICINE
卷 43, 期 6, 页码 1187-1196出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0033291712001948
关键词
Bipolar disorder; cognition; follow-up study; lithium treatment; psychosocial functioning
资金
- Fundacio Marato de TV3 Grant [15231/01]
- IRBLleida (Biomedicine Research Institute) [P10062]
- Spanish FIS-MSC [PI11/01956]
- Ministerio de Ciencia e Innovacion of the Spanish Government
- Instituto de Salud Carlos III [CP10-00393]
- European Regional Development Fund (ERDF) [2007-2013]
- Almirall
- AstraZeneca
- Bristol-Myers Squibb
- Eli Lilly
- Forest Research Institute
- Geodon Richter
- Glaxo-Smith-Kline
- Janssen-Cilag
- Jazz
- Lundbeck
- Merck
- Novartis
- Organon
- Otsuka
- Pfizer Inc.
- Sanofi-Aventis
- Servier
- Solvay
- Schering-Plough
- Takeda
- United Biosource Corporation
- Wyeth
- Spanish Ministry of Science and Innovation
- Stanley Medical Research Institute
- European Union
Background. Previous cross-sectional studies report that cognitive impairment is associated with poor psychosocial functioning in euthymic bipolar patients. There is a lack of long-term studies to determine the course of cognitive impairment and its impact on functional outcome. Method. A total of 54 subjects were assessed at baseline and 6 years later; 28 had DSM-IV TR bipolar I or II disorder (recruited, at baseline, from a Lithium Clinic Program) and 26 were healthy matched controls. They were all assessed with a cognitive battery tapping into the main cognitive domains (executive function, attention, processing speed, verbal memory and visual memory) twice over a 6-year follow-up period. All patients were euthymic (Hamilton Rating Scale for Depression score lower than 8 and Young mania rating scale score lower than 6) for at least 3 months before both evaluations. At the end of follow-up, psychosocial functioning was also evaluated by means of the Functioning Assessment Short Test. Results. Repeated-measures multivariate analysis of covariance showed that there were main effects of group in the executive domain, in the inhibition domain, in the processing speed domain, and in the verbal memory domain (p<0.04). Among the clinical factors, only longer illness duration was significantly related to slow processing (p=0.01), whereas strong relationships were observed between impoverished cognition along time and poorer psychosocial functioning (p<0.05). Conclusions. Executive functioning, inhibition, processing speed and verbal memory were impaired in euthymic bipolar out-patients. Although cognitive deficits remained stable on average throughout the follow-up, they had enduring negative effects on psychosocial adaptation of patients.
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