Neurocognitive functioning in early-onset and late-onset older patients with euthymic bipolar disorder

Diego J. Martino, Sergio A. Strejilevich*, Facundo Manes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

Objective Most neurocognitive studies have not taken into account the fact that older patients with bipolar disorder (BD) are a heterogeneous population. The main goal of this study was to compare neurocognitive performance and extrapyramidal symptoms in older patients with early-onset BD (EO-BD) and late-onset BD (LO-BD). Methods Euthymic older patients with EO-BD (n = 20), LO-BD (n = 20), and healthy controls (n = 20) were evaluated with traditional clinical instruments and measures of exposure to psychotropic drugs, as well as extrapyramidal symptoms. All subjects completed an extensive neuropsychological battery. Results Patients with EO-BD showed poorer performance than healthy controls in two measures of verbal memory and two measures of executive functions, whereas patients with LO-BD exhibited lower performance scores than healthy controls in almost all of the measures assessed. Impairments in the LO-BD group included even neurocognitive domains typically spared in mixed-age patients. Additionally, there was a trend toward displaying higher extrapyramidal symptoms in the LO-BD group compared with both EO-BD and healthy control groups. In both patient groups, psychosocial functioning was related with executive dysfunction and extrapyramidal symptoms. Conclusions Patients with LO-BD may have more extensive and severe cognitive impairments, as well as higher vulnerability to extrapyramidal symptoms, compared with patients with EO-BD. Cognitive-motor disturbances may help to explain impairments in daily functioning among older patients with EO-BD and LO-BD during remission.

Original languageEnglish
Pages (from-to)142-148
Number of pages7
JournalInternational Journal of Geriatric Psychiatry
Volume28
Issue number2
DOIs
Publication statusPublished - Feb 2013
Externally publishedYes

Keywords

  • age at onset
  • bipolar disorder
  • cerebrovascular disease
  • frontotemporal dementia
  • neuropsychology

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