Performance in inhibitory control during euthymia is not related to past suicide attempts in individuals with bipolar disorder

• M. Hasse-Sousa ^[1] ; D.S. Martins ^[1] ; C Petry-Perin ^[1] ; Raissa Telesca Arrial-Cordeiro ^[1] ; Francisco Diego Rabelo-Da-Ponte ^[1] ; A ^[2] ; Joana Bücker ^[3] ; Clarissa S. Gama ; Letícia S. Czepielewski
  1. [1] Universidade Federal do Rio Grande do Sul

     Universidade Federal do Rio Grande do Sul

     Brasil

     
  2. [2] Laboratory of Molecular Psychiatry, Hospital de Clínicas de Porto Alegre; Programa de Pós-Graduação em Psiquiatria e Ciências do Comportamento, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil / Department of Pharmacology, Programa de Pós-Graduação em Farmacologia e Terapêutica, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
  3. [3] Universidade do Vale do Taquari, Lajeado, Brazil

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• Localización: European journal of psychiatry, ISSN 0213-6163, Vol. 34, Nº 3, 2020, págs. 153-159
• Idioma: inglés
• DOI: 10.1016/j.ejpsy.2020.04.003
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• Resumen

  • Background and objectives Individuals with bipolar disorder have an elevated risk of suicide. One hypothesis is that deficits in inhibitory control may play a significant part in suicidal behavior. However, the relationship between inhibitory control and suicide behavior in bipolar disorder is still unclear. This study aims, therefore, to investigate the effects of inhibitory control with other clinical variables on the likelihood that individuals with bipolar disorder have had previous suicide attempts.

    Methods 96 euthymic individuals with bipolar disorder were recruited and underwent a clinical interview. Inhibitory control was measured through the Stroop Color-Word Test. A logistic regression model was conducted to investigate the effects of multiple hospitalizations, age of disease diagnosis, family history of severe mental disorders, sex and inhibitory control performance, controlling for age and estimated intellectual functioning.

    Results The model revealed statistically significant main effects of multiple hospitalizations, female sex and family history of psychiatric disorders. Unexpectedly, inhibitory control performance was not a significant predictor, even after designing a new model excluding the clinical variables.

    Conclusions Current inhibitory control performance was not related to the likelihood of previous suicide attempts in individuals with BD, reinforcing the evidence of major effects of clinical risk factors. It may play an indirect role in suicidal behavior, however, as it may be related to greater illness severity, which, in turn, may be related to more severe episodes and increased suicidal behavior.