Chronotype in bipolar disorder: an 18-month prospective study
Braz. J. Psychiatry (São Paulo, 1999, Impr.)
; 42(1): 68-71, Jan.-Feb. 2020. tab, graf
Article
em En
| LILACS
| ID: biblio-1055368
Biblioteca responsável:
BR1.1
ABSTRACT
Objective:
Circadian dysregulation plays an important role in the etiology of mood disorders. Evening chronotype is frequent in these patients. However, prospective studies about the influence of chronotype on mood symptoms have reached unclear conclusions in patients with bipolar disorder (BD). The objective of this study was to investigate relationship between chronotype and prognostic factors for BD.Methods:
At the baseline, 80 euthymic BD patients answered a demographic questionnaire and clinical scales to evaluate anxiety, functioning and chronotype. Circadian preference was measured using the Morningness-Eveningness Questionnaire, in which lower scores indicate eveningness. Mood episodes and hospitalizations were evaluated monthly for 18 months.Results:
Among the BD patients, 14 (17.5%) were definitely morning type, 35 (43.8%), moderately morning, 27 (33.7%) intermediate (neither) and 4 (5%) moderately evening. Eveningness was associated with obesity or overweight (p = 0.03), greater anxiety (p = 0.002) and better functioning (p = 0.01), as well as with mood episodes (p = 0.04), but not with psychiatric hospitalizations (p = 0.82). This group tended toward depressive episodes (p = 0.06), but not (hypo)mania (p = 0.56).Conclusion:
This study indicated that evening chronotype predicts a poor prognostic for BD. It reinforces the relevance of treating rhythm disruptions even during euthymia to improve patient quality of life and prevent mood episodes.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Ansiedade
/
Transtorno Bipolar
/
Ritmo Circadiano
Tipo de estudo:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Aspecto:
Patient_preference
Limite:
Adult
/
Aged
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Braz. J. Psychiatry (São Paulo, 1999, Impr.)
Assunto da revista:
PSIQUIATRIA
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Brasil