Sleep Disturbances and Delirium (SLEEP)

Sleep Disturbances in Hospitalized Patients as a Risk Factor for Delirium

Delirium is a frequent and serious problem in hospitalized patients; it is associated with multiple hospital-acquired complications. There is evidence that the incidence of deliri-um may be minimized by multimodal interventions (pain management, shortening the duration of mechanical ventilation, light sedation, avoiding benzodiazepines, routine delirium monitoring, and early mobilization). Even though a clear association between sleep and delirium has not been established, many studies suggest that sleep disturban-ces may be a key risk factor for the development of delirium. Therefore, sleep promoti-on is becoming an integral part of clinical care. The project support the hypothesis that non-pharmacological preventive interventions promoting sleep (sleep protocol) positive-ly influence the quality of sleep and reduce the incidence of delirium in hospitalized patients. This will be verified by qualitative and quantitative research methods, with the quantitative study being divided into three prospective cross-sectional studies and one interventional study. Data will be obtained from 3240 hospitalized patients by combi-ning subjective methods (questionnaire surveys) and objective measurements (acti-graphy). The project outcomes will allow better understanding of the relationship betwe-en sleep and delirium. A set of non-pharmacological preventive interventions promoting sleep will be developed, with a subsidiary aim to potentially reduce the incidence of delirium in hospitalized patients.

Study Overview

• Status: Recruiting
• Conditions: Sleep Disturbance
• Intervention / Treatment: Behavioral: Sleep protocol

Detailed Description

Sleep is one of the most important physiological needs. Sleep disturbances have detri-mental effects on practically all systems and may thus prolong recovery of patients. Studies have documented many similarities between clinical and physiological profiles of patients with delirium and sleep disturbances (ischemia/inflammation, hypoxia, neu-rotransmitter imbalance and tryptophan/melatonin metabolism abnormalities). There is still a lack of strong evidence to support the link between poor sleep and delirium, par-ticularly in hospitalized patients, even though available studies suggest that sleep dis-turbances may be a potential key risk factor for its development, which may have a significant clinical impact. Low awareness of the negative impact of sleep disturbances on the organism and the options for improving sleep may influence the attitude of health professionals to fulfilling this basic human need.The aim of the study is to assess the quality of sleep in patients staying in general wards and intensive care units, identify disruptive factors responsible for its reduced quality, evaluate the relationship between sleep quality and delirium and verify the effectiveness of preventive measures (sleep protocol) in clinical practice. The aims of the study will be met by combining the fol-lowing methods qualitative research, a cross-sectional analytical study and an interven-tional study. The quantitative part of the research will be divided into three consecutive cross-sectional analytical studies. The aim of cross-sectional study I will be to assess the diagnostic properties of the selected instrument (FIRST) for identification of patients predisposed to situational sleep disturbances. This will be immediately followed by cross-sectional study II aimed to identify factors most disrupting sleep of hospitalized patients and, subsequently, by cross-sectional study III subjectively and objectively as-sessing sleep quality and its relationship with delirium, this phase also will be an evalua-tion of routine care (PRE phase), which will be smoothly followed by intervention stud-ies.. The quantitative part is divided into the three cross-sectional studies not only to meet the subgoals and ensure seamless continuity but also because of the patient sam-ple. The patient subgroups are diverse, being specified in detail for each study and se-lected based on the inclusion and exclusion criteria.

• Study Type: Interventional
• Enrollment (Estimated): 3240
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Michaela Rybova; Phone Number: +420608714997; Email: michaela.rybova@osu.cz

Study Locations

• Czechia
  • Česká Republika
    • Ostrava, Česká Republika, Czechia, 70300
      • Recruiting
      • University of Ostrava
      • Contact: Michaela Rybova; Phone Number: +420608714997; Email: michaela.rybova@osu.cz
      • Sub-Investigator: Karel Sonka, prof.
      • Sub-Investigator: Jana Slonkova, Ph.D.

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• age over 18 years
• a hospital stay longer than 24 hours
• a hospital stay longer than 36 hours
• hospitalized for at least 72 hours, without previous sleep disturbances, without cognitive impairment

Exclusion Criteria:

• Patients with cognitive impairment preventing them from cooperating
• Glasgow Coma Scale score below 12
• terminal disease
• previous and current treatment for sleep disturbances
• neurocognitive dysfunction (dementia)
• sedative administration over the last 24 hours

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Non-Randomized
• Interventional Model: Crossover Assignment
• Masking: Single

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
No Intervention: Qualitative study; 15 nurses (direct care nurses, nurse managers) and 5 patients, to investigate experiences and compare attitudes and opinions concerning the need for and quality of sleep in hospitalized patients.
No Intervention: Prospective quantitative study; diagnosing predisposition to sleep disturbances: 400 inpatients staying in gene-ral wards: Patients will undergo a serial of structured and standardized questi-onnaires during scheduled: FIRST: on the day of admission and RCSQ during their hospital stay (record length of up to 7 days).
No Intervention: Retrospective quantitative study; subjective assessment of factors affecting sleep: 600 hospitalized patients (360 patients in general wards, 240 patients in intensive care wards). On the day of discharge, patients will retrospectively assess disruptive factors that could in-fluence the quality of their sleep during their hospital stay by standardized que-stionnaire.
Other: Interventional study; (subjective and objective assessment of sleep, quality of sleep with respect to delirium, baseline - routine care: PRE phase) implementation of sleep protocol and assess effectiveness (POST phase: determining the effectiveness of imple-mented sleep measures): overal: 2240 patients (1480 general ward, 760 inten-sive care wards.	Behavioral: Sleep protocol; To investigate the effect of a multicomponent sleep protocol on the quality of sleep hospitalized patients assessed both subjectively and objectively.; Other Names: Sleep promotion protocol

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change quality of sleep during hospitalization (subjectively and objectively)	Assessment of quality of sleep using Richards Campbell Sleep Questionnaire (RCSQ) five-item visual analogue scale was designed as an outcome measure for assessing the perception of sleep in patients. The RCSQ contains 5 items (sleep depth, sleep latency, awakenings, returning to sleep and sleep quality) plus noise as an optional item (evaluated separately). Each item is scored by using a 0-100 visual analogue scale. The total score is calculated as the mean of all items, with 0 and 100 representing the worst and best sleep, respectively. Objectively sleep were assed by actigraphy -the method collects and stores data generated by patient movements.	25 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change of the Confusion Assessment Method for the Intensive Care Unit (CAM-ICU)	This is a two-step assessment of delirium. The first step is to assess arousal with the Richmond Agitation and Sedation Scale. The second step is assessment of the presence/absence of delirium using four features; delirium is ruled out when none of them is present.	25 months
Change of the Confusion Assessment Method (CAM)	The instrument assesses the presence/absence of delirium using four features; delirium is ruled out when none of them is present.	25 months
Change of Ford Insomnia Response to Stress Test: FIRST (self-reported)	The instrument comprises 9 items (scenarios) to identify individuals predisposed to situational sleep disturbances. The FIRST consists of 9 items which are scored on a four point-scale. High scores are indicative of greater vulnerability to sleep disruption. Total FIRST scores range from 9 to 36.	4 months
Change of Sleep in the Intensive Care Unit Questionnaire (SICQ) (self-reported)	The most widely used instrument for assessing factors causing sleep disturbances in the ICU. The final version contains 27 items divided into 4 dimensions (sleep quality, daytime sleepiness, disruptive factors produce by the healthcare team and environmental disruptive factors). The ratings use a 1-10 Likert scale.	3 months
Change of Questionnaire to ascertain the factors affecting sleep during hospitalization (self-reported)	Scale used for measuring disturbances factors. Questionnaire contains 23 items divided into 4 dimensions (factors - physical, physiological, environmental and psychological). The ratings use a 1-4 Likert scale. The following ranges are used to grade the severity of sleep disturbances: mild sleep disturbances range 0 - 30, moderate disturbances 31 - 60 and severe disturbances 61 - 92.	3 months
Analyse information about concerning the need for sleep	Semi-structured interviews with inpatiens.	up to 1 months
Analyse information about compare attitudes and opinions of nurses providing direct care, nurse managers about sleep and his disturbances	Semi-structured interviews with nurses.	up to 1 months

Collaborators and Investigators

• Sponsor: University of Ostrava
• Collaborators: University Hospital Ostrava; General University Hospital, Prague
• Investigators: Study Director: Darja Jarosova, University of Ostrava

Publications and helpful links

General Publications

• Devlin JW, Skrobik Y, Gelinas C, Needham DM, Slooter AJC, Pandharipande PP, Watson PL, Weinhouse GL, Nunnally ME, Rochwerg B, Balas MC, van den Boogaard M, Bosma KJ, Brummel NE, Chanques G, Denehy L, Drouot X, Fraser GL, Harris JE, Joffe AM, Kho ME, Kress JP, Lanphere JA, McKinley S, Neufeld KJ, Pisani MA, Payen JF, Pun BT, Puntillo KA, Riker RR, Robinson BRH, Shehabi Y, Szumita PM, Winkelman C, Centofanti JE, Price C, Nikayin S, Misak CJ, Flood PD, Kiedrowski K, Alhazzani W. Clinical Practice Guidelines for the Prevention and Management of Pain, Agitation/Sedation, Delirium, Immobility, and Sleep Disruption in Adult Patients in the ICU. Crit Care Med. 2018 Sep;46(9):e825-e873. doi: 10.1097/CCM.0000000000003299.
• Inouye SK, van Dyck CH, Alessi CA, Balkin S, Siegal AP, Horwitz RI. Clarifying confusion: the confusion assessment method. A new method for detection of delirium. Ann Intern Med. 1990 Dec 15;113(12):941-8. doi: 10.7326/0003-4819-113-12-941.
• Richards KC, O'Sullivan PS, Phillips RL. Measurement of sleep in critically ill patients. J Nurs Meas. 2000 Fall-Winter;8(2):131-44.
• Ely EW, Margolin R, Francis J, May L, Truman B, Dittus R, Speroff T, Gautam S, Bernard GR, Inouye SK. Evaluation of delirium in critically ill patients: validation of the Confusion Assessment Method for the Intensive Care Unit (CAM-ICU). Crit Care Med. 2001 Jul;29(7):1370-9. doi: 10.1097/00003246-200107000-00012.
• Wesselius HM, van den Ende ES, Alsma J, Ter Maaten JC, Schuit SCE, Stassen PM, de Vries OJ, Kaasjager KHAH, Haak HR, van Doormaal FF, Hoogerwerf JJ, Terwee CB, van de Ven PM, Bosch FH, van Someren EJW, Nanayakkara PWB; "Onderzoeks Consortium Acute Geneeskunde" Acute Medicine Research Consortium. Quality and Quantity of Sleep and Factors Associated With Sleep Disturbance in Hospitalized Patients. JAMA Intern Med. 2018 Sep 1;178(9):1201-1208. doi: 10.1001/jamainternmed.2018.2669.
• Alessi CA, Martin JL, Webber AP, Alam T, Littner MR, Harker JO, Josephson KR. More daytime sleeping predicts less functional recovery among older people undergoing inpatient post-acute rehabilitation. Sleep. 2008 Sep;31(9):1291-300.
• Altman MT, Knauert MP, Murphy TE, Ahasic AM, Chauhan Z, Pisani MA. Association of intensive care unit delirium with sleep disturbance and functional disability after critical illness: an observational cohort study. Ann Intensive Care. 2018 May 8;8(1):63. doi: 10.1186/s13613-018-0408-4.
• Bakken LN, Kim HS, Finset A, Lerdal A. Stroke patients' functions in personal activities of daily living in relation to sleep and socio-demographic and clinical variables in the acute phase after first-time stroke and at six months of follow-up. J Clin Nurs. 2012 Jul;21(13-14):1886-95. doi: 10.1111/j.1365-2702.2011.04014.x. Epub 2012 Apr 4.
• Bertisch SM, Pollock BD, Mittleman MA, Buysse DJ, Bazzano LA, Gottlieb DJ, Redline S. Insomnia with objective short sleep duration and risk of incident cardiovascular disease and all-cause mortality: Sleep Heart Health Study. Sleep. 2018 Jun 1;41(6):zsy047. doi: 10.1093/sleep/zsy047.
• Bihari S, Doug McEvoy R, Matheson E, Kim S, Woodman RJ, Bersten AD. Factors affecting sleep quality of patients in intensive care unit. J Clin Sleep Med. 2012 Jun 15;8(3):301-7. doi: 10.5664/jcsm.1920.
• Boyko Y, Toft P, Ording H, Lauridsen JT, Nikolic M, Jennum P. Atypical sleep in critically ill patients on mechanical ventilation is associated with increased mortality. Sleep Breath. 2019 Mar;23(1):379-388. doi: 10.1007/s11325-018-1718-3. Epub 2018 Sep 13.
• Delaney LJ, Currie MJ, Huang HC, Lopez V, Van Haren F. "They can rest at home": an observational study of patients' quality of sleep in an Australian hospital. BMC Health Serv Res. 2018 Jul 5;18(1):524. doi: 10.1186/s12913-018-3201-z.
• Drake C, Richardson G, Roehrs T, Scofield H, Roth T. Vulnerability to stress-related sleep disturbance and hyperarousal. Sleep. 2004 Mar 15;27(2):285-91. doi: 10.1093/sleep/27.2.285.
• Flannery AH, Oyler DR, Weinhouse GL. The Impact of Interventions to Improve Sleep on Delirium in the ICU: A Systematic Review and Research Framework. Crit Care Med. 2016 Dec;44(12):2231-2240. doi: 10.1097/CCM.0000000000001952.
• Patel J, Baldwin J, Bunting P, Laha S. The effect of a multicomponent multidisciplinary bundle of interventions on sleep and delirium in medical and surgical intensive care patients. Anaesthesia. 2014 Jun;69(6):540-9. doi: 10.1111/anae.12638.
• Smith MT, McCrae CS, Cheung J, Martin JL, Harrod CG, Heald JL, Carden KA. Use of Actigraphy for the Evaluation of Sleep Disorders and Circadian Rhythm Sleep-Wake Disorders: An American Academy of Sleep Medicine Systematic Review, Meta-Analysis, and GRADE Assessment. J Clin Sleep Med. 2018 Jul 15;14(7):1209-1230. doi: 10.5664/jcsm.7228.

Study record dates

Study Major Dates

• Study Start (Actual): May 1, 2022
• Primary Completion (Estimated): June 30, 2025
• Study Completion (Estimated): December 31, 2025

Study Registration Dates

• First Submitted: May 19, 2022
• First Submitted That Met QC Criteria: May 30, 2022
• First Posted (Actual): June 2, 2022

Study Record Updates

• Last Update Posted (Actual): September 21, 2023
• Last Update Submitted That Met QC Criteria: September 18, 2023
• Last Verified: September 1, 2023

More Information

Terms related to this study

• Keywords: delirium; actigraphy; inpatient; interventions; sleep disruptions; sleep protocol
• Additional Relevant MeSH Terms: Mental Disorders; Nervous System Diseases; Sleep Wake Disorders; Neurologic Manifestations; Confusion; Neurobehavioral Manifestations; Neurocognitive Disorders; Delirium; Dyssomnias; Parasomnias
• Other Study ID Numbers: SLEEP

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No