None listed
Conditions
Brief summary
As hospitals move towards modern interventional suites, this study aims to identify potential safety risks related to ambient light-related performance deficiencies. Specifically, the aims are to measure the influence of spectral selection in the operating theatre and interventional suite environments and to interpret safety risks for patients in relation to the performance of anaesthetic staff in blue and green ambient light conditions. Blue and green spectral conditions will negatively affect the ability of anaesthetic staff to correctly detect colour hues using the Farnsworth test and diminish performance in a drug labelling matching task, in staff who performed adequately in white light conditions. This may indicate the potential hazards of incorrect drug identification, impaired patient monitoring performance and delayed clinical response in clinical practice.
Interventions
Volunteer participants that have met the inclusion criterion of passing the Stage 1 visual tests: the Ishihara test for colour blindness, the Farnsworth D-15 hue visual test and the drug labelling test in white light conditions will progress to Stage Two and complete the Farnsworth D-15 hue and drug labelling tests using a random order of items in 1) ambient green light; and in 2) ambient blue light.
The ‘Farnsworth-Test’, 15 cups with different hues will be given to participants to be put in
Volunteer participants that have met the inclusion criterion of passing the Stage 1 visual tests: the Ishihara test for colour blindness, the Farnsworth D-15 hue visual test and the drug labelling test in white light conditions will progress to Stage Two and complete the Farnsworth D-15 hue and drug labelling tests using a random order of items in 1) ambient green light; and in 2) ambient blue light. The ‘Farnsworth-Test’, 15 cups with different hues will be given to participants to be put in order of hue from the starter cup with a standard colour. Complete passing to mild failure (13-15 correctly) is deemed acceptable. Anything that results in >2 mismatched cups is considered a failure of the test. Accuracy and time to complete the test is recorded. The Drug-Labelling-Test’, 15 names of commonly-used drugs in anaesthesia (on international standardized colour labels) will be provided on an A4 form (left side), which needs to be matched by participants using identical drug labels on the form’s right side . Accuracy and time to complete the test is recorded. The number of inaccurate selections of drug label will be recorded out of 15. Ambient Blue light is defined as 1000+/-50 lux of blue light (~470nm) incident on the test objects. Ambient Green light is defined as 1000+/-50 lux of green light (~550nm) incident on the test objects. The testing procedure commences immediately upon entering the room, and the total time in each light exposure is approximately 5 minutes. The researcher will administer the tests. Participants are allowed up to a maximum of 5 minutes to complete each test. All participants will experience green and blue light conditions with approximately 3 minutes between conditions, to allow for task components to be reset for the subsequent test.
Sponsors
Royal Brisbane and Women's Hospital.
Study design
Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Prevention
Masking
Open (masking not used)
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
- Volunteers aged >18 years - Anaesthetists, anaesthetic health practitioners and nurses who participate in any of prescription, preparation, administration, and checking of medications. - Written informed consent by the volunteer.
Exclusion criteria
- A failure of the Ishihara Test. - A failure of the Farnsworth D-15 hue test and/or drug labelling test in white light conditions.
Outcome results
None listed