Systemic Lupus Erythematous and Obstructive Sleep Apnea: A Possible Association

Area of Science:

• Rheumatology
• Sleep Medicine
• Internal Medicine

Background:

• Fatigue is a prevalent symptom in Systemic Lupus Erythematosus (SLE).
• Sleep disturbances, including Obstructive Sleep Apnea (OSA), are increasingly recognized as potential contributors to SLE symptoms and disease burden.

Purpose of the Study:

• To investigate the association between sleep disorders, specifically OSA, and SLE.
• To evaluate the relationship between SLE disease activity, accumulated damage, and the presence and severity of OSA.

Main Methods:

• Recruitment of 42 SLE patients and 20 healthy controls for ambulatory sleep examination.
• Utilized questionnaires such as the Pittsburgh Sleep Quality Index (PSQI) and Functional Assessment of Chronic Illness Therapy (FACIT).
• Assessed SLE disease activity (SLEDAI-2K) and damage (SDI) to correlate with sleep parameters.

Main Results:

• SLE patients exhibited a significantly higher apnea/hypopnea index (p=0.004) and increased rates of moderate-to-severe OSA (p=0.04) compared to controls.
• Elevated PSQI (p=0.001) and FACIT (p=0.0008) scores in SLE patients indicated poorer sleep quality and impact on daily functioning.
• Multivariate analysis linked SLE damage index (SDI) (p=0.03) and SLE disease activity (SLEDAI-2K) (p=0.03) with OSA.

Conclusions:

• Patients with SLE demonstrate a higher prevalence of OSA and diminished sleep quality.
• Active SLE disease and cumulative organ damage are associated with OSA in SLE patients.
• Screening for OSA is crucial in the management of SLE patients to address fatigue and improve overall health outcomes.