title: Sleep complaints and memory in psychotropic drug-free euthymic patients with bipolar disorder.
abstract: OBJECTIVE
  Few studies have been conducted examining the genuine sleep condition and memory in patients with euthymic bipolar disorder. Thus we evaluated sleep complaints and memory functions in psychotropic drug-free euthymic patients with bipolar disorder.
  
  
  METHODS
  Twenty-two psychotropic drug-free euthymic patients with bipolar disorder and 44 healthy controls matched by age and sex were recruited and assessed using the Pittsburgh Sleep Quality Index (PSQI) and the Wechsler Memory Scale-Revised (WMS-R).
  
  
  RESULTS
  The quality of sleep and memory function of the euthymic patients with bipolar disorder were significantly poorer than those of the controls. Both years of education and the hypnotic use sub-item of the PSQI were significantly correlated with visual memory index of the WMS-R.
  
  
  CONCLUSIONS
  Sleep complaints management is important in euthymic patients with bipolar disorder.
authors.affiliation: Department of Psychiatry, Changhua Christian Hospital Lutung Branch, Changhua, Taiwan.
authors.forename: Chieh-Hui
authors.initials: CH
authors.lastname: Wang
authors.affiliation: Department of Psychiatry, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Psychiatry, National Cheng Kung University Hospital, Dou-Liou Branch, Yunlin, Taiwan; Addiction Research Center, National Cheng Kung University, Tainan, Taiwan.
authors.forename: Kao-Chin
authors.initials: KC
authors.lastname: Chen
authors.affiliation: Department of Psychiatry, Changhua Christian Hospital Lutung Branch, Changhua, Taiwan.
authors.forename: Wen-Yu
authors.initials: WY
authors.lastname: Hsu
authors.affiliation: Department of Psychiatry, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Addiction Research Center, National Cheng Kung University, Tainan, Taiwan.
authors.forename: I-Hui
authors.initials: IH
authors.lastname: Lee
authors.affiliation: Department of Psychiatry, Changhua Christian Hospital Lutung Branch, Changhua, Taiwan.
authors.forename: Nan-Ying
authors.initials: NY
authors.lastname: Chiu
authors.affiliation: Department of Psychiatry, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Psychiatry, National Cheng Kung University Hospital, Dou-Liou Branch, Yunlin, Taiwan; Addiction Research Center, National Cheng Kung University, Tainan, Taiwan.
authors.forename: Po-See
authors.initials: PS
authors.lastname: Chen
authors.affiliation: Department of Psychiatry, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Addiction Research Center, National Cheng Kung University, Tainan, Taiwan. Electronic address: ykyang@mail.ncku.edu.tw.
authors.forename: Yen-Kuang
authors.initials: YK
authors.lastname: Yang
mesh_terms: D000328:Adult; D001714:Bipolar Disorder / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008568:Memory; D012890:Sleep; D012893:Sleep Wake Disorders / Q000453:epidemiology
keywords: Pittsburgh Sleep Quality Index; Wechsler Memory Scale–Revised; bipolar disorder; euthymic state