Continuous Non-Invasive Eye Tracking for the Early Detection of Delirium on the Intensive Care Unit
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 30
- 试验地点
- 1
- 主要终点
- Demonstrate eye gaze correlates with CAM-ICU
研究概览
简要总结
In this trial, the investigators seek to demonstrate the feasibility of a system in continuously detecting 'inattention' as a subset of CAM-ICU in a small representative sample of patients in the Intensive Care Unit (ICU) at Chelsea & Westminster NHS Foundation Trust.
详细描述
Delirium is an acute confusional state that affects many patients admitted to the hospital, especially intensive care. The current diagnosis of delirium is through the use of the Confusional Assessment Method in Intensive Care Unit (CAM-ICU) task based questionnaire. The core prinicipal to CAM-ICU is inattention; this is tested through asking the patient to remember a task and execute it on demand, e.g. squeezing the operator's hand everytime the letter A is said and then spelling CASABLANCA.
The aim of this study is to find correlates to inattention. Eye-gaze data is ideally suited for this task as eyes move to pay attention to the environment.
A video camera based eye-tracker has been developed that sits at the end of the bed (head-camera) and another behind the patient (scene-camera). The head-camera uses machine learning to measure the gaze of the patient's eyes while the scene-camera finds what the patient is looking at. Simulations are then run from the scene camera and the patient's gaze is then compared to find whether the patient is paying attention to what is simulated.
Once per day, a member of the local research team will fill in a non-validated questionnaire based on work by MacMurchy et al.
M. MacMurchy, S. Stemler, M. Zander, C. P. Bonafide, Acceptability, Feasibility, and Cost of Using Video to Evaluate Alarm Fatigue, Biomedical Instrumentation & Technology 51 (2017) 25-33.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Predicted Delirium as defined by the Early PREdiction of DELIRium in ICU patients (E-PREDELIRIC) score ≥ 20%
- •Expected length of stay ≥ 2 days
排除标准
- •Non-concordant eyes
- •Visual Impairment
- •Inability for facial recognition and eye tracking to be performed reliably
- •Lack of signed consent form / nominated consultee form
- •In-ability to perform CAM-ICU reliably
结局指标
主要结局
Demonstrate eye gaze correlates with CAM-ICU
时间窗: 8-12 months
Patient's usual clinical care will not be affected by the assessments performed by this study. In our institution, CAM-ICU is performed at least twice daily and more so if there are changes to mental status. The system will be switched on 5 minutes prior to performing CAM-ICU and will record for a duration of 10 minutes following which, the system will be turned off and the cameras covered. This procedure will occur every time CAM-ICU is performed.
次要结局
- Acceptance of the use of cameras and artificial intelligence on ICU(8-12 months)