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Chinese Journal of Clinicians(Electronic Edition) ›› 2025, Vol. 19 ›› Issue (11): 839-847. doi: 10.3877/cma.j.issn.1674-0785.2025.11.007

• Clinical Research • Previous Articles    

Sleep-related breathing disorders and cardiovascular risk profiles in adolescents with bipolar disorder: a correlation analysis stratified by overweight/obesity status

Yuxin Xiao, Gaiyu Tong, Shaohong Zou()   

  1. Department of Clinical Psychology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830001, China
  • Received:2025-10-14 Online:2025-11-30 Published:2026-02-12
  • Contact: Shaohong Zou

Abstract:

Objective

To examine the effects of overweight/obesity on sleep-related breathing disorders, cardiovascular risk characteristics, and their interrelationships in adolescents with bipolar disorder (BD).

Methods

A cross-sectional study was conducted on 44 BD patients aged 12–18 years from the People's Hospital of Xinjiang Uygur Autonomous Region between June 2024 to June 2025. According to the Chinese screening standard for overweight and obesity in school-age children and adolescents, the patients were divided into an overweight/obesity BD group (n=23) and a normal-weight BD group (n=21). Demographic data, clinical course, and objective sleep parameters were collected via overnight polysomnography (PSG). Cardiovascular indicators were measured simultaneously. Subjective sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI). Logistic regression and Pearson and Spearman correlation analyses were employed to examine the related factors.

Results

The overweight/obesity group had a longer disease duration, higher systolic blood pressure (SBP), lower sleep efficiency (SE), and significantly higher obstructive apnea-hypopnea index (OAHI) and subjective sleep quality scores compared to the normal-weight group (all P<0.05). Logistic regression analysis indicated that SE (OR=0.867, 95%CI: 0.765~0.982), OAHI (OR=1.374, 95%CI: 1.017~1.858), SBP (OR=1.190, 95%CI: 1.066~1.328), and PSQI sleep quality score (OR=2.280, 95%CI: 1.041~4.994) were influencing factors for overweight/obesity status. Multivariate analysis further confirmed that SE (OR=0.826, 95%CI: 0.699~0.976, P=0.025) and SBP (OR=1.254, 95%CI: 1.075~1.461, P=0.004) were independent predictors of overweight/obesity status. Correlation analysis revealed that BMI was negatively correlated with SE (r=−0.334, P=0.027) and positively correlated with OAHI (ρ=0.436, P=0.003) and SBP (r =0.467, P<0.01).

Conclusion

Overweight/obese adolescents with BD exhibit more severe sleep-related breathing disorders and cardiovascular risks. Sleep efficiency and SBP are independent predictors of overweight/obesity status. Comprehensive management of body weight, sleep, and blood pressure should be emphasized in clinical practice to improve patient prognosis.

Key words: Bipolar disorder, Adolescents, Overweight/obesity, Obstructive sleep apnea, Cardiovascular risk factors, Correlation analysis

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