Critical Illness, Neuropathy
Conditions
Brief summary
The purpose of this study is to explore the inter-device reliability between the NPi-200 and NPi-300.
Detailed description
Paired assessments will be made on patients who are consented; and on healthy controls who have verbally assented to participate. We plan to enroll 20 patients and 50 healthy controls. Assessments will be made at the convenience of the patient and healthy controls. Each assessment will include bilateral PLR reading within a 5 minute interval. The first assessment will be completed with the NPi-200 and the second assessment will use the NPi-300. The data will be entered into a CRF. If there is a significant difference between readings from the NPi-200 and the NPi-300, we will repeat the bilateral assessment in the following hour and the regularly scheduled time.
Interventions
DEVICENPi-200 and NPi-300 pupillometers
Device which measures PLR.
Sponsors
NeurOptics Inc.
University of Texas Southwestern Medical Center
Study design
Observational model
OTHER
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
(Patient Cohort): * Subjects will be included if they are adults (\>18 years of age) and have a neurological or neurosurgical diagnosis that place them at risk for cerebral edema. Subjects also have to be admitted to the enrolling site. Persons consenting for the study (whether patient or LAR) will need to be able to consent for the study in English.
Exclusion criteria
(Patient Cohort): * Patients that will be excluded from the study are those that are prisoners, under 18 years of age, or pregnant women. Inclusion Criteria (Healthy Control Cohort): * Staff in the enrolling site
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Pupil's reaction to light as measured by Neurological Pupil Index (NPI) | 1 year | Pupil's reaction to light as measured by Neurological Pupil Index (NPI) algorithm using pupillometer device that grades the pupil's reaction to light on a scale between 0 and 5. The Inter-device reliability is assessed using Cohen's Kappa method: values ≤ 0 as indicating no agreement. |
Countries
United States
Outcome results
None listed