Feasibility and Acceptability of Using Wireless Limited Polysomnography to Capture Sleep Before, During, and After Hospitalization for Patients With Planned Cardiothoracic Surgery.

The study was a single-center pilot with 15 included patients, so it may not apply to other hospitals, surgery types, or patient groups. It tested feasibility and acceptability, not whether sleep monitoring changes patient outcomes, prevents delirium, or improves recovery. All patients received analgesic medication, and some received sedatives during ICU sleep assessment, which can alter sleep patterns and may have reduced awareness of the monitor. Sleep was assessed for only one overnight period at each timepoint, not daytime or consecutive nights, so total ICU sleep time was not captured. Limited-channel PSG may miss important EEG signals or sleep disorders that full polysomnography could capture. The study did not assess reasons for disturbed sleep, such as environment, medications, or nursing care activities, so sleep findings cannot be interpreted as explaining delirium risk.

The study used a Cerebra Health sleep system. MY owns YRT, a small R&D company that licenses sleep scoring technology to Cerebra Health, and MY is a shareholder and receives royalties from Cerebra Health. BG is an employee of YRT. All other authors declared nothing relevant.

Do not read the high signal quality and acceptability as evidence that sleep monitoring improves recovery or prevents postoperative delirium. The study did not test an intervention or link sleep findings to outcomes.