title: Mood congruence phenomenon in acutely symptomatic mania bipolar I disorder patients with and without psychotic symptoms.
abstract: BACKGROUND
  Bipolar disorder causes substantial morbidity including cognitive impairment. The objective of the study was to evaluate memory performance of acutely mania bipolar I disorder (BD-I) patients with and without psychosis. We also aimed to assess the mood congruence phenomenon upon memory.
  
  
  METHODS
  A cross-sectional study was developed with BD-I patients (19 with, and 12 without psychotic symptoms), and 27 age- and education-paired healthy controls. Memory tests were selected to evaluate memory/attention performance. A verbal episodic memory task with affective content (word span) was also applied.
  
  
  RESULTS
  A significant difference was observed in the scores of the word span task with positive tone among the three groups, controlling for number of mania episodes (p=.042). Nonpsychotic BD patients presented higher scores. There was a statistical tendency for BD-I patients with and without psychotic symptoms to perform poorer than healthy controls in the delayed recall of the logical memory test (p=.069).
  
  
  CONCLUSIONS
  Psychotic and nonpsychotic mania BD-I patients showed mood congruence phenomenon in a verbal memory task with positive tone in relation to the healthy group. Evidence of mood congruence was found in the nonpsychotic group suggesting a purer manifestation of the disease.
authors.affiliation: a Biochemistry Post-Graduate Program, Department of Biochemistry , Universidade Federal do Rio Grande do Sul , Porto Alegre , Brazil.
authors.forename: Vera B
authors.initials: VB
authors.lastname: Delgado
authors.forename: Márcia L
authors.initials: ML
authors.lastname: Chaves
mesh_terms: D000328:Adult; D000339:Affect; D001288:Attention; D001714:Bipolar Disorder / Q000150:complications* / Q000175:diagnosis / Q000523:psychology; D016022:Case-Control Studies; D003072:Cognition Disorders / Q000175:diagnosis / Q000209:etiology* / Q000523:psychology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D061212:Memory, Episodic; D011939:Mental Recall; D008875:Middle Aged; D009483:Neuropsychological Tests; D011618:Psychotic Disorders / Q000150:complications* / Q000523:psychology; D014705:Verbal Behavior; D055815:Young Adult