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Trial registered on ANZCTR

Registration number
Ethics application status
Not yet submitted
Date submitted
Date registered
Date last updated
Type of registration
Prospectively registered

Titles & IDs
Public title
A nurse led intervention to prevent delirium among adults admitted to Intensive Care,
Scientific title
A nurse lead intervention to reduce delirium among adults admitted to intensive care: a randomised multi-centre step-wedged study.
Secondary ID [1] 294251 0
Universal Trial Number (UTN)
Trial acronym
DeLI Study
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Delirium 306933 0
Condition category
Condition code
Neurological 306033 306033 0 0
Other neurological disorders

Study type
Description of intervention(s) / exposure
The intervention will incorporate a nurse led delirium prevention protocol, targeting risk factors for delirium: (1) visual and hearing impairment - nurses will ensure that all patient who usually need glasses, or hearing aids will use them during their ICU stay; (2) to prevent and treat sensory deprivation, cognitive impairment, and loss of orientation - all patients will be re-orientated to place, person, and time at the start of nursing shift and during the daily medical round; (3) Sleep deprivation will be minimised, and avoided where possible by ensuring minimal nursing care during the night shift (between 10pm and 6am in the morning), and overnight use of lights will be minimised, and noise kept to a level to facilitate/optimise sleeping; and, (4) lack of mobility - staff will attempt to improve functional mobility while in the intensive care, and also stimulate cognition, this will be undertaken in collaboration with the physiotherapy and occupational therapy teams to ensure patient (when able), will sit out of bed and mobilise within the ICU. Nursing staff will use checklists to direct interventions, and regular delirium prevention rounds (one per shift) will be undertaken to ensure application of interventions to reduce the risk of delirium.
Intervention code [1] 300551 0
Comparator / control treatment
Current nursing practice, which does not include any system approaches to prevent delirium, any measures currently implemented are usually ad hoc, and only implemented once a patient has delirium.
Control group

Primary outcome [1] 305063 0
Incidence of delirium will assessed using the ICU-CAM scale, which categorising patients as CAM +ve, CAM -ve for delirium, or un-assessable due to coma.
Timepoint [1] 305063 0
within first 28-days in the intensive care, each patient will be assigned CAM -ve or CAM +ve for delirium during the daily morning medical round.
Secondary outcome [1] 344045 0
Along with the identification of the primary outcomes of the incidence of delirium during first 28-days in the intensive car, each patient's daily CAM result will determine a delirium or delirium free day.
Timepoint [1] 344045 0
The calculation of cumulative delirium free days for each patient will be undertaken at the time of discharge.

Key inclusion criteria
All adults aged 18 years or more admitted to the intensive care during the study period.
Minimum age
18 Years
Maximum age
No limit
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
(1) The presence of delirium on admission to the intensive care; (2) length of stay in the ICU < 24-hrs; (3) Patient not considered to survive first 24-hours of stay; (4) Persistent coma; (5) serious receptive aphasia; (6) severe mentally disability; and, (7) unable to understand english.

Study design
Purpose of the study
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Allocation is not concealed
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
After an initial three months of baseline measurement of delirium rates, and delirium free days, each month a single ICU will randomly cross-over into the intervention period of the trial (5 ICUs, and therefore, 5-months). The random selection of each unit's cross-over time will be undertaken using R statistical software, with the starting random seed being obtained from an external colleague to the project.
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?

Intervention assignment
Other design features
Stepped Wedge
Not Applicable
Type of endpoint(s)
Statistical methods / analysis
Descriptive statistics will describe the characteristics of each ICU at baseline and after the introduction of the intervention. Characteristics the patients populations before and after the introduction of the intervention will compared using appropriate statistical tests of significance for count or continuous data.

Formal tests of changes between baseline and following the introduction of the intervention, for the two main outcomes of interest: (1) rates of delirium; and (2) delirium free days, will undertaken using a generalised linear mixed model (poisson for rates of delirium), and a linear mixed model for delirium free days, taking into account the repeat measurements of each intensive care unit during the 12-month study period.

Recruitment status
Not yet recruiting
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)
Recruitment hospital [1] 10311 0
Liverpool Hospital - Liverpool
Recruitment hospital [2] 10312 0
Bankstown-Lidcombe Hospital - Bankstown
Recruitment hospital [3] 10313 0
Campbelltown Hospital - Campbelltown
Recruitment hospital [4] 10314 0
Fairfield Hospital - Prairiewood
Recruitment hospital [5] 10315 0
Bowral Hospital - Bowral
Recruitment postcode(s) [1] 21979 0
2170 - Liverpool
Recruitment postcode(s) [2] 21980 0
2200 - Bankstown
Recruitment postcode(s) [3] 21981 0
2560 - Campbelltown
Recruitment postcode(s) [4] 21982 0
2176 - Prairiewood
Recruitment postcode(s) [5] 21983 0
2576 - Bowral

Funding & Sponsors
Funding source category [1] 298890 0
Name [1] 298890 0
Liverpool Hospital SWSLHD
Address [1] 298890 0
Locked Bag 7103
Liverpool BC
NSW 1871
Country [1] 298890 0
Primary sponsor type
Liverpool Hospital
Locked Bag 7103
Liverpool BC
NSW 1871
Secondary sponsor category [1] 298104 0
Name [1] 298104 0
Western Sydney University
Address [1] 298104 0
Centre for Applied Nursing Research
Locked Bag 7103
Liverpool BC
NSW 1871
Country [1] 298104 0

Ethics approval
Ethics application status
Not yet submitted
Ethics committee name [1] 299834 0
Ethics committee address [1] 299834 0
Ethics committee country [1] 299834 0
Date submitted for ethics approval [1] 299834 0
Approval date [1] 299834 0
Ethics approval number [1] 299834 0

Brief summary
Delirium is an acute neurocognitive disorder that is characterised by a fluctuating level of consciousness with impaired attention and cognition. Delirium has been estimated to occur in approximately 30% of adults admitted the intensive care. Delirium is associated with poor outcomes which include longer stay in intensive care unit, longer stay in hospital by 10 days and experience a prolonged duration of mechanical ventilation. The longer-term outcomes include long-term cognitive impairment, dependency in activities of daily living and 2-3 times higher mortality rates. The restlessness and agitation experienced by patients leads to increasing workload of ICU nurses who need to stay continually by the bedside to ensure the patients safety, thereby requiring one-to-one nursing care. This increases the financial burden of delirium on the Intensive Care unit as well as the hospital.

This study will evaluate the impact of a nursing-led delirium-prevention protocol (‘the intervention’) that is aimed at reducing the incidence, severity, and duration of delirium among adults admitted to ICU. The Delirium Prevention Nursing Protocol targets the risk factors for delirium which includes visual and hearing impairment, to prevent or treat sensory deprivation and ultimately the loss of orientation; sleep deprivation, cognitive impairment to (re)orientate patients with regard to time, place and person to prevent or minimize decline; and immobility, to improve patients’ functional mobility in the ICU and to stimulate patients’ cognition.
Trial website
Trial related presentations / publications
Public notes

Principal investigator
Name 81706 0
Dr Steve Frost
Address 81706 0
Centre for Applied Nursing Research
Ingham Institute of Applied Medical Research
South Western Sydney Local Health District
Level 3, room 3.45
1-3 Campbell St Liverpool 2170
Locked Bag 7103
Liverpool BC NSW 1871
Country 81706 0
Phone 81706 0
+61 2 87389360
Fax 81706 0
+61 2 87389206
Email 81706 0
Contact person for public queries
Name 81707 0
Dr Steve Frost
Address 81707 0
Centre for Applied Nursing Research
Ingham Institute of Applied Medical Research
South Western Sydney Local Health District
Level 3, room 3.45
1-3 Campbell St Liverpool 2170
Locked Bag 7103
Liverpool BC NSW 1871
Country 81707 0
Phone 81707 0
+61 2 87389360
Fax 81707 0
+61 2 87389206
Email 81707 0
Contact person for scientific queries
Name 81708 0
Dr Steve Frost
Address 81708 0
Centre for Applied Nursing Research
Ingham Institute of Applied Medical Research
South Western Sydney Local Health District
Level 3, room 3.45
1-3 Campbell St Liverpool 2170
Locked Bag 7103
Liverpool BC NSW 1871
Country 81708 0
Phone 81708 0
+61 2 87389360
Fax 81708 0
+61 2 87389206
Email 81708 0

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