Introduction: Bipolar Affective Disorders is an episodic mood disorder with significant global morbidity. Sleep deprivation in addition to being a core symptom and early warning sign of impending mood episodes can also trigger relapse. Individuals with Bipolar Affective Disorder in specific, differ in their tendency for sleep loss to trigger relapse depending on their sociodemographic and clinical factors. Current study objective was to evaluate the frequency and quality of sleep as a trigger for relapse of mood episode in patients with bipolar affective disorders and to correlate it with socio-demographic profile and clinical variables. Material and methods:This observational cross sectional clinical study was conducted on 62 patients with ICD10 diagnosis of bipolar affective disorders presenting with relapse of mood episode. Presence of acute sleep deprivation and chronic sleep insufficiency according to American academy of sleep medicine criteria was considered. Young Mania Rating Scale (YMRS) and Hamilton Depression Rating Scale (HAM D) were administered. Pittsburgh Sleep Quality Index (PSQI) Scale was used to assess quality of sleep. Written Informed consents were taken from all the subjects. The data was analyzed with appropriate statistical methods. Results:Of the 62 patients assessed with diagnosis of bipolar affective disorders presenting with mood episode, 58.1% have poor quality of sleep and 41.9% have good quality of sleep. No statistically significant association noted in any domains of socio demographic profile. Statistically significant association is noted with triggers in the present episode of relapse with 94.4% of individual were noted to have sleep deprivation (p<0.001). 52.8% individuals with current episode manic, 16.7% with depression, 27.8% with hypomania and 2.8% with current episode mixed is noted to have poor quality of sleep and statistically significant association is noted with polarity of current episode. No statistically significant association noted between quality of sleep with other clinical variables. Conclusion:Poor quality of sleep may trigger relapse of mood episode in patients with bipolar affective disorders. Our finding substantiates the need for careful assessment and management of sleep disturbances during maintenance phase for bipolar disorders.
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