A Prospective Study Evaluating Sleep Quality and Disorders in Post-ARDS Patients.

Area of Science:

• Critical care medicine
• Sleep medicine
• Pulmonary medicine

Background:

• Critically ill patients face numerous sleep disorder risk factors, including pre-existing conditions, acute illness severity, medical interventions, and the ICU environment.
• A multi-modality approach assessed insomnia, daytime sleepiness, sleep quality, sleep architecture, and sleep-disordered breathing (SDB).

Purpose of the Study:

• To evaluate sleep quality and disturbances in Acute Respiratory Distress Syndrome (ARDS) survivors post-Intensive Care Unit (ICU) discharge.
• To identify factors associated with poor sleep quality in ARDS survivors.

Main Methods:

• A cohort of ARDS survivors was assessed twice: early (within 7 days) and late (after 6 weeks) post-discharge.
• Sleep assessments included the Insomnia Severity Index (ISI), Epworth Sleepiness Scale (ESS), Pittsburgh Sleep Quality Index (PSQI), and Polysomnography (PSG).
• Abnormal sleep was defined by specific thresholds for ISI, ESS, PSQI, and Apnea-Hypopnea Index (AHI).

Main Results:

• Early post-discharge, 60% of ARDS survivors had clinical insomnia (ISI > 15) and low sleep efficiency (median 59.9%).
• Sleep efficiency improved to 80.6% by 6 weeks, with reduced insomnia prevalence (36%).
• Longer ICU stay (>10 days), mechanical ventilation (>7 days), and sedative use (>7 days) were independently associated with poor objective sleep quality.

Conclusions:

• ARDS survivors exhibit poor sleep quality and disrupted sleep architecture within 7 days of ICU discharge.
• Significant improvements in sleep stages and SDB occur by 6 weeks, but insomnia often persists.
• Early identification of risk factors and timely diagnosis of sleep disorders are crucial for post-ARDS patient care.