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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03242395
Other study ID # 14/LO/0049
Secondary ID
Status Completed
Phase N/A
First received April 21, 2017
Last updated August 7, 2017
Start date October 2014
Est. completion date April 2017

Study information

Verified date December 2016
Source Chelsea and Westminster NHS Foundation Trust
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

PRIME aims to demonstrate through neurocognitive assessment that BICU patients will have a degree of neurocognitive dysfunction following a major burn, that this neurocognitive dysfunction is due to an underlying neuroinflammatory process by fMRI neuroimaging techniques, and that the neurocognitive deficit is associated with a reduced quality of life.


Description:

Patients were matched with for age, sex and IQ (as determined by National Adult Reading Test scores) controlled volunteers.

Participants were assessed for the following domains: verbal ability, verbal and visual learning, short-term memory, working memory, executive function, attention and processing speed. The domains were assessed with the following validated cognitive tests: The Hopkins Verbal Learning Test, Trail making parts A and B, phonemic, semantic and switching verbal fluency as well as the Cogstate computerised battery: Identification speed, Detection speed, One Card Learning accuracy, One Back test accuracy, Two Back test accuracy, International Shopping List total correct answers and Groton Maze Learning total errors. Evidence of neuroinflammation was assessed using an fMRI protocol (Resting state MRI, T1w-MPR, T2 Space, Diffusion Tensor Imaging with 30 directions, right frontal white matter and posterior cingulate gyrus Single Voxel Spectroscopy, and patient group Susceptibility Weighted Imaging.

Quality of life was measured using the EuroQoL 5 Dimensions and visual analogue scale. Independent Activities of Daily Living was also assessed. Mental Health (as a confounder) was measured using the Patient Health Questionnaire 9, the Beck Depression Index II, the Beck Anxiety Inventory and the Trauma Screening Questionnaire.

Statistical methods include significant differences between the patient and control group using the Student t test (parametric data), the Mann Witney U test (non parametric data) or the Fisher's Exact test (qualitative scoring systems). MELODIC in FSL software was used to decompose the rs-fMRI data into brain networks using independent component analysis (ICA) and connectivity in these networks patients and controls was compared using dual regression. FreeSurfer was used to extract brain regions from T1 images and compare the normalised volume of the hippocampus, amygdala and precuneus for patients and controls. DTI data were analysed using tract based spatial statistics (TBSS) in FSL and using FreeSurfer regions for the hippocampus, amygdala and precuneus. Cho/Cr, Cho/NAA and Ins/Cr ratios were extracted from MRS data using Tarquin. SWI images were reviewed for the presence of microbleeds by two Radiologists.


Recruitment information / eligibility

Status Completed
Enrollment 30
Est. completion date April 2017
Est. primary completion date February 2017
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Invasive ventilation on a Burns Intensive Care Unit (BICU) within the previous ten years

- Burn injuries greater than 15% total body surface area (TBSA)

- Adult

Exclusion Criteria:

- Admission to BICU for other illnesses that were not burn related (such as Toxic Epidermal Necrolysis Syndrome)

- Evidence of head trauma

- Known substance misuse or alcohol excess

- Inability to understand plain verbal or written English

- Severe mental health issues

- Receiving formal psychiatric treatment

- Currently held under the Mental Health Act

- If the subject's psychological health was deemed to be at risk from inclusion

- Imprisoned

- Contraindications to MRI

- non-compatible pacemakers

- surgical metalwork or foreign bodies

- severe claustrophobia

Study Design


Locations

Country Name City State
United Kingdom Chelsea and Westminster Hospital NHS Foundation Trust London

Sponsors (4)

Lead Sponsor Collaborator
Chelsea and Westminster NHS Foundation Trust Imperial College Healthcare NHS Trust, Imperial College London, University of Westminster

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type Measure Description Time frame Safety issue
Primary Neurocognitive deficit Median T score of cognitive results (verbal ability, verbal and visual learning, short-term memory, working memory, executive function, attention and processing speed) Within 10 years of injury
Secondary Quality of Life EuroQoL 5D score Within 10 years of injury
Secondary Neuroinflammation As per the functional Magnetic Resonance Imaging protocol Within 10 years of injury
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