ArticleJournal of critical care medicine (Universitatea de Medicina si Farmacie din Targu-Mures)2021
Evaluation of Sleep Architecture using 24-hour Polysomnography in Patients Recovering from Critical Illness in an Intensive Care Unit and High Dependency Unit: a Longitudinal, Prospective, and Observational Study.
Article in Journal of critical care medicine (Universitatea de Medicina si Farmacie din Targu-Mures), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 5 citations in OpenAlex.
- Clinical Care Interaction and Patient Sleep in the Intensive Care Unit: A Secondary Data Analysis.Nursing in critical care · 2026Article
- Survey of perceived sleep quality and nursing implications in 172 adult ICU patients.European journal of medical research · 2025Article
- Correlations between clinical insomnia and psychophysiological factors in postoperative patients discharged from the ICU: A cross-sectional study.PCN reports : psychiatry and clinical neurosciences · 2025Article
- Effect of sleep quality on weaning from mechanical ventilation: A scoping review.Journal of critical care medicine (Universitatea de Medicina si Farmacie din Targu-Mures) · 2025Review
- Article
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Authors and funding
5 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
objectiveThe sleep architecture of critically ill patients being treated in Intensive Care Units (ICU) and High Dependency Units (HDU) is frequently unsettled and inadequate both qualitatively and quantitatively. The study aimed to investigate and elucidate factors influencing sleep architecture and quality in ICU and HDU in a limited resource setting with financial constraints, lacking human resources and technology for routine monitoring of noise, light and sleep promotion strategies in ICU.
methodsThe study was longitudinal, prospective, hospital-based, analytic, and observational. Insomnia Severity Index (ISI) and the Epworth Sleepiness Scale (ESS) pre hospitalisation scores were recorded. Patients underwent 24-hour polysomnography (PSG) with the simultaneous monitoring of noise and light in their environments. Patients stabilised in ICU were transferred to HDU, where the 24-hour PSG with the simultaneous monitoring of noise and light in their environments was repeated. Following PSG, the Richards-Campbell Sleep Questionnaire (RCSQ) was employed to rate patients' sleep in both the ICU and HDU.
resultsOf 46 screened patients, 26 patients were treated in the ICU and then transferred to the HDU. The mean (SD) of the study population's mean (SD) age was 35.96 (11.6) years with a predominantly male population (53.2% (n=14)). The mean (SD) of the ISI and ESS scores were 6.88 (2.58) and 4.92 (1.99), respectively. The comparative analysis of PSG data recording from the ICU and HDU showed a statistically significant reduction in N1, N2 and an increase in N3 stages of sleep (p<0.05). Mean (SD) of RCSQ in the ICU and the HDU were 54.65 (7.70) and 60.19 (10.85) (p-value = 0.04) respectively. The disease severity (APACHE II) has a weak correlation with the arousal index but failed to reach statistical significance (coeff= 0.347, p= 0.083).
conclusionSleep in ICU is disturbed and persisting during the recovery period in critically ill. However, during recovery, sleep architecture shows signs of restoration.
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