Johan Høy Jensen1, Ulla Knorr2, Maj Vinberg3, Lars V Kessing4, Kamilla W Miskowiak5. 1. Psychiatric Centre Copenhagen, Copenhagen University Hospital, Rigshospitalet Department 6233, Blegdamsvej 9, DK-2100 Copenhagen, Denmark. Electronic address: johan.hoey.jensen@regionh.dk. 2. Psychiatric Centre Copenhagen, Copenhagen University Hospital, Rigshospitalet Department 6233, Blegdamsvej 9, DK-2100 Copenhagen, Denmark. Electronic address: ulla.knorr@regionh.dk. 3. Psychiatric Centre Copenhagen, Copenhagen University Hospital, Rigshospitalet Department 6233, Blegdamsvej 9, DK-2100 Copenhagen, Denmark. Electronic address: maj.vinberg@regionh.dk. 4. Psychiatric Centre Copenhagen, Copenhagen University Hospital, Rigshospitalet Department 6233, Blegdamsvej 9, DK-2100 Copenhagen, Denmark. Electronic address: lars.vedel.kessing@regionh.dk. 5. Psychiatric Centre Copenhagen, Copenhagen University Hospital, Rigshospitalet Department 6233, Blegdamsvej 9, DK-2100 Copenhagen, Denmark. Electronic address: kamilla.miskowiak@regionh.dk.
Abstract
BACKGROUND: Neurocognitive impairment in remitted patients with bipolar disorder contributes to functional disabilities. However, the pattern and impact of these deficits are unclear. METHODS: We pooled data from 193 fully or partially remitted patients with bipolar disorder and 110 healthy controls. Hierarchical cluster analysis was conducted to determine whether there are discrete neurocognitive subgroups in bipolar disorder. The pattern of the cognitive deficits and the characteristics of patients in these neurocognitive subgroups were examined with analyses of covariance and least significance difference pairwise comparison. RESULTS: Three discrete neurocognitive subgroups were detected: one that was cognitively intact (46.1%), one that was selectively impaired with deficits in processing speed (32.6%), and one that was globally impaired across verbal learning, working memory, and executive skills (21.2%). The globally and selectively impaired subgroups were characterized by greater perceived stress and subjective cognitive complaints, poorer work and social adjustment, and reduced quality of life compared to patients who were cognitively intact. LIMITATIONS: The study design was cross-sectional which limits inferences regarding the causality of the findings. CONCLUSION: Globally and selectively impaired bipolar disorder patients displayed more functional disabilities than those who were cognitively intact. The present findings highlight a clinical need to systematically screen for cognitive dysfunction in remitted bipolar disorder and to target residual cognitive dysfunction in future treatment strategies.
BACKGROUND:Neurocognitive impairment in remitted patients with bipolar disorder contributes to functional disabilities. However, the pattern and impact of these deficits are unclear. METHODS: We pooled data from 193 fully or partially remitted patients with bipolar disorder and 110 healthy controls. Hierarchical cluster analysis was conducted to determine whether there are discrete neurocognitive subgroups in bipolar disorder. The pattern of the cognitive deficits and the characteristics of patients in these neurocognitive subgroups were examined with analyses of covariance and least significance difference pairwise comparison. RESULTS: Three discrete neurocognitive subgroups were detected: one that was cognitively intact (46.1%), one that was selectively impaired with deficits in processing speed (32.6%), and one that was globally impaired across verbal learning, working memory, and executive skills (21.2%). The globally and selectively impaired subgroups were characterized by greater perceived stress and subjective cognitive complaints, poorer work and social adjustment, and reduced quality of life compared to patients who were cognitively intact. LIMITATIONS: The study design was cross-sectional which limits inferences regarding the causality of the findings. CONCLUSION: Globally and selectively impaired bipolar disorderpatients displayed more functional disabilities than those who were cognitively intact. The present findings highlight a clinical need to systematically screen for cognitive dysfunction in remitted bipolar disorder and to target residual cognitive dysfunction in future treatment strategies.
Authors: Kamilla W. Miskowiak; Julie L. Forman; Maj Vinberg; Hartwig R. Siebner; Lars V. Kessing; Julian Macoveanu Journal: J Psychiatry Neurosci Date: 2020-05-01 Impact factor: 6.186
Authors: M Russo; T E Van Rheenen; M Shanahan; K Mahon; M M Perez-Rodriguez; A Cuesta-Diaz; E Larsen; A K Malhotra; K E Burdick Journal: Psychol Med Date: 2017-06-07 Impact factor: 7.723
Authors: Brisa Solé; Esther Jiménez; Carla Torrent; Maria Reinares; Caterina Del Mar Bonnin; Imma Torres; Cristina Varo; Iria Grande; Elia Valls; Estela Salagre; Jose Sanchez-Moreno; Anabel Martinez-Aran; André F Carvalho; Eduard Vieta Journal: Int J Neuropsychopharmacol Date: 2017-08-01 Impact factor: 5.176
Authors: K W Miskowiak; K E Burdick; A Martinez-Aran; C M Bonnin; C R Bowie; A F Carvalho; P Gallagher; B Lafer; C López-Jaramillo; T Sumiyoshi; R S McIntyre; A Schaffer; R J Porter; I J Torres; L N Yatham; A H Young; L V Kessing; E Vieta Journal: Bipolar Disord Date: 2017-09-12 Impact factor: 6.744
Authors: Caroline V Ott; Maj Vinberg; Christopher R Bowie; Ellen Margrethe Christensen; Gitte M Knudsen; Lars V Kessing; Kamilla W Miskowiak Journal: Trials Date: 2018-09-12 Impact factor: 2.279