The iCOVER intervention was developed to rapidly restore functioning in individuals experiencing an Acute Stress Reaction (ASR). iCOVER is undergoing widespread adoption but has not been tested for efficacy. iCOVER was designed to be administered by peers, paraprofessionals, or medical personnel in 60-120 seconds, including in military operational environments. The term iCOVER is an acronym that summarizes the six specific steps of the intervention: (1) identify that an individual is experiencing an ASR; (2) Connect with the individual through word, eye contact, and physical touch to draw them back to the present moment; (3) Offer commitment so that the individual feels less psychologically isolated and withdrawn (e.g., "I'm right here with you"); (4) Verify facts - ask simple fact-based questions to engage the individual in deliberate cognitive activity; (5) Establish order of events - briefly review what has happened, what is happening, and what will happen to orient the individual; and (6) Request action to re-engage the individual in purposeful behavior.
Participants will be randomly assigned to one of three groups: iCOVER, usual care, or physical presence with reassurance. Investigators have elected to use two different control conditions, in order to examine the reliability of the iCOVER intervention in comparison with two typical responses to individuals experiencing an ASR (i.e., physical presence with reassurance, no specific treatment).
≥ 18 years and ≤ 50 years of age (if age not known, appears to be)
In the emergency department as a patient or loved one of a patient
If a patient, anticipated to be discharged to home from the emergency department after evaluation
Exhibiting visible signs of distress Richmond Agitation and Sedation Scale ((RASS) (+1 to +3)) or dissociation (awake and alert but reduced responsiveness)
Known pregnancy
Prisoner or in custody
Known history of psychosis or bipolar disorder
Known or suspected drug intoxication
Parallel
iCOVER
BehavioralThe term iCOVER is an acronym that summarizes the six specific steps of the intervention: (1) identify that an individual is experiencing an ASR; (2) Connect with the individual through word, eye contact, and physical touch to draw them back to the present moment; (3) Offer commitment so that the individual feels less psychologically isolated and withdrawn (e.g., "I'm right here with you"); (4) Verify facts - ask simple fact-based questions to engage the individual in deliberate cognitive activity; (5) Establish order of events - briefly review what has happened, what is happening, and what will happen to orient the individual; and (6) Request action to re-engage the individual in purposeful behavior.
Physical Presence with Reassurance
BehavioralThe RA who performed randomization, initially approached the individual, and obtained assent will stay with the participant for the length of the iCOVER intervention (in order to ensure matching of the amount of time spent with individuals who receive the iCOVER intervention, which takes 60-120 seconds). During this time, the RA will provide supportive but passive statements. The RA will leave the participant after the length of the iCOVER intervention has elapsed. A separate blinded RA will return 5 minutes post-intervention to conduct the immediate post-intervention assessment.
Neurocognitive function at the immediate post-intervention assessment
To assess acute neurocognitive function, a suite of four brief neurocognitive tasks will be employed, and the primary outcome will consist of overall performance across all four tasks as assessed jointly using a multivariate linear mixed model. These four tasks each assess an aspect of neurocognitive function essential to warfighting during times of intense stress: generalized cognitive function using the Test My Brain Digit Symbol Matching Test (measuring balanced integration scores (BIS) which combine accuracy with mean reaction time for correct responses to 'test' trials), procedural reaction using the Test My Brain Choice Reaction Time Test (measuring the mean and median reaction times for correct responses to 'test' trials, as well as through BIS values, which incorporate normalized meanRTc.), visual search and visual change detection using the Test My Brain Multiple Object Tracking Test (measuring percent correct for the proportion of total targets correctly identified).
Test My Brain Digit Symbol Matching
General cognitive function will be assessed using the Test My Brain Digit Symbol Matching Test. Participants will be asked to match as many symbols and numbers as possible in 90 seconds, using a symbol-number key shown on screen. General cognitive function is assessed via balanced integration scores (BIS), which combine accuracy with mean reaction time for correct responses to 'test' trials
Test My Brain Choice Reaction Time Test
Procedural reaction time will be assessed using the Test My Brain Choice Reaction Time Test. In this 3-minute task, participants see a set of three arrows, where one arrow is a different color from the rest. The participant presses left or right to indicate the direction of the odd colored arrow. Reaction time is assessed via measuring the mean and median reaction times for correct responses to 'test' trials, as well as through BIS values, which incorporate normalized meanRTc.
Test My Brain Multiple Object Tracking Test
Visuospatial processing and attention will be assessed will be performed using the Test My Brain Multiple Object Tracking Test. In this two-minute test of visuospatial processing and attention, participants have to track a set of target circles around the screen (amidst a field of distractors) that move at increasing speed with each trial. Once the circles stop moving, participants select which were targets must identify targets instead of distractors. Visuospatial processing and attention is assessed via measuring percent correct for the proportion of total targets correctly identified.
Test My Brain Gradual Onset Continuous Performance Test
Psychomotor vigilance will be assessed via the Test My Brain Gradual Onset Continuous Performance Test. In this 1-minute task, participants monitor a stream of city and mountain images that rapidly fade from one to the next with no interstimulus interval. Participants are asked to press/touch for each city image and to withhold for each mountain image. Vigilance is assessed via measuring d-prime for identification of each city image, a signal detection-based measure that takes into account both hits and false alarms to provide an unbiased estimate of performance where higher values reflect better performance. Response inhibition is defined as the suppression of actions that are inappropriate in a given context. Response inhibition is assessed using results from the above, by measuring the number of commission errors (failure to withhold responses) where most positive scores reflect more impulsive responding.
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University of North Carolina, Chapel Hill
Lead sponsor
U.S. Army Medical Research Acquisition Activity
Collaborator
