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Trial registered on ANZCTR

Registration number
Ethics application status
Date submitted
Date registered
Date last updated
Type of registration
Retrospectively registered

Titles & IDs
Public title
Improving sleep for the intensive care patient
Scientific title
A preintervention-postintervention study investigating the effect of a rest and sleep guideline on the amount and quality of sleep in intensive care patients
Secondary ID [1] 252502 0
Universal Trial Number (UTN)
Trial acronym
ICU sleep study
Linked study record

Health condition
Health condition(s) or problem(s) studied:
The amount and quality of sleep 257988 0
Condition category
Condition code
Public Health 258154 258154 0 0
Other 258183 258183 0 0
Conditions of unknown or disputed aetiology (such as chronic fatigue syndrome/myalgic encephalomyelitis)

Study type
Description of intervention(s) / exposure
The implementation of a 'rest and sleep guideline' using interventions suggested by the entire healthcare team including: a daytime rest period (in the afternoon for 1.5 hours instigated by bedside nurses), ear plugs, eye masks, clustered care and noise reduction. The guideline has been implemented using a multifaceted approach (e.g. group sessions, one to one academic detailing, auditing with feedback in the intensive care unit (ICU) newsletter, e mail and posters) and designed to be sustained over the long-term (until further evidence becomes available to improve sleep further).
Intervention code [1] 257039 0
Comparator / control treatment
A pre-post design. A group of patients will have their sleep monitored before the introduction of the intervention and another group will have their sleep monitored after the introduction of the guideline.
Control group

Primary outcome [1] 259015 0
Total sleep time
Timepoint [1] 259015 0
A 24 hour sleep period using continuous monitoring
Secondary outcome [1] 265247 0
The number of microarousals defined using the American Academy of Sleep Medicine criteria and assessed by an accredited experienced sleep technologist.
Criteria: ' an abrupt shift in electroencephalograph frequency including alpha, theta and/or frequencies >16Hertz (not spindles) that lasts at least 3 seconds, with at least 10 seconds of stable sleep preceding the change. Scoring of arousal during rapid eye movement (REM) sleep requires a concurrent increase in submental electromyography (EMG) lasting at least 1 second.'
No adverse events are expected.
Timepoint [1] 265247 0
24 hour sleep monitoring
Secondary outcome [2] 265250 0
Quantity (percentage) of each sleep stage (1 to 4 and Rapid Eye Movement)
Timepoint [2] 265250 0
A 24 hour sleep period using continuous monitoring

Key inclusion criteria
Treated in the intensive care unit (ICU) for 24 hours and likely to be in for a further 48 hours
Minimum age
17 Years
Maximum age
No limit
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
History/evidence of sleep disorder, central nervous system impairment e.g. confirmed brain injury on Magnetic Resonance Imaging (MRI)/ Computerised Tomography (CT) scan, diagnosis of dementia

Study design
Purpose of the study
Allocation to intervention
Non-randomised trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
No allocation concealment.
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?

Intervention assignment
Other design features
Preintervention-postintervention study design. Thirty intensive care unit (ICU) patients were enrolled in the preintervention phase and had their sleep monitored continuously for one 24 hour period. These patients received standard care. The intervention (a 'rest and sleep guideline') has been implemented. In the postintervention phase another 30 (different) patients will be enrolled and have their sleep monitored continuously for one 24 hour period.
Not Applicable
Type of endpoint(s)
Statistical methods / analysis

Recruitment status
Date of first participant enrolment
Date of last participant enrolment
Date of last data collection
Sample size
Accrual to date
Recruitment in Australia
Recruitment state(s)

Funding & Sponsors
Funding source category [1] 257504 0
Name [1] 257504 0
Australian College of Critical Care Nurses
Address [1] 257504 0
PO Box 219, Carlton South, VIC 3053
Country [1] 257504 0
Primary sponsor type
University of Technology Sydney
15 Broadway,
Ultimo, NSW 2007
Secondary sponsor category [1] 256740 0
Name [1] 256740 0
Address [1] 256740 0
PO Box 3553
NSW 2250
Country [1] 256740 0

Ethics approval
Ethics application status
Ethics committee name [1] 259513 0
Harbour Human Research Ethics Comittee of Northern Sydney Central Coast Health
Ethics committee address [1] 259513 0
The Research Office
Royal North Shore Hospital
St Leonards
NSW 2065
Ethics committee country [1] 259513 0
Date submitted for ethics approval [1] 259513 0
Approval date [1] 259513 0
Ethics approval number [1] 259513 0
0809-201M (SP)
Ethics committee name [2] 259514 0
UTS Human Research Ethics Committee
Ethics committee address [2] 259514 0
Research and Innovation Office
University of Technology Sydney
Level 14, Tower Building
Broadway NSW 2007
Ethics committee country [2] 259514 0
Date submitted for ethics approval [2] 259514 0
Approval date [2] 259514 0
Ethics approval number [2] 259514 0

Brief summary
Intensive care units (ICU) provide treatment and care to critically ill patients. Frequently, invasive monitoring and intrusive treatments delivered via artificial airways are required, which limit the ability to communicate. These factors, symptoms of illness and the busy environment may lead to discomfort, in particular the inability to sleep. The adverse health effects of poor quality sleep are understood and ICU patients are in greater need of sleep.

Therefore, the aim of this study is to minimise sleep disruptions and improve the quality and quantity of ICU patients’ sleep. Thirty intensive care patients’ sleep has been measured using a portable sleep monitor. Simultaneous records were made of interruptions to the patients’ sleep and sound and light levels. The results from the first group have been discussed with ICU health care personnel who have decided which sleep promoting practices to implement, i.e. organisational and behavioural changes, such as blocks of uninterrupted time and noise reduction. Sleep data will be collected on a further thirty patients to assess the effectiveness of these interventions.

No studies of this type have been conducted in Australian ICUs and few published studies have been performed with the purpose of improving sleep for ICU patients. This study is a unique opportunity to obtain data on ICU patients’ sleep in Australia using the most objective measure available, polysomnograph. It also has the potential to provide data on the effectiveness of sleep promoting activities.
Trial website
Trial related presentations / publications
‘Sleep (for patients) in intensive care’, Conference presentation (invited speaker), Australian College of Critical Care nurses (Victorian Branch) symposium, 16th April 2010.

Elliott R, McKinley S, Eager D. ‘A pilot study of sound levels in an Australian adult general intensive care unit’, Noise and Health, 2010 12(46):6-36.

Elliott R, McKinley S, Eager D, Ladanyi S. ‘A pilot study of sound levels in an Australian adult general intensive care unit’, Conference presentation (nursing free paper), 34th Annual Scientific Meeting on Intensive Care, Florence, Italy, October 2009
Public notes

Principal investigator
Name 31535 0
Address 31535 0
Country 31535 0
Phone 31535 0
Fax 31535 0
Email 31535 0
Contact person for public queries
Name 14782 0
Rosalind Elliott
Address 14782 0
Intensive care unit
Level 6, Main Building
Royal North Shore Hospital
St Leonards
NSW 2065
Country 14782 0
Phone 14782 0
+61 411 694 387
Fax 14782 0
Email 14782 0
Contact person for scientific queries
Name 5710 0
Rosalind Elliott
Address 5710 0
Intensive care unit
Level 6, Main Building
Royal North Shore Hospital
St Leonards
NSW 2065
Country 5710 0
Phone 5710 0
+61 411 694 387
Fax 5710 0
Email 5710 0

No information has been provided regarding IPD availability
Summary results
No Results