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Clinical Trial Summary

The primary goal of this study is to determine whether the use of a timed tone played during sleep, in addition to the use of established therapies, will reduce or eliminate the occurrence of nightmares. In particular, the protocol tests two different mechanisms for improvement: 1) further decreasing autonomic arousal and providing a mechanism for restoration and 2) enhancing memory processing for the alternate version of the traumatic events.


Clinical Trial Description

Study Population: The study population consisted of veterans who experienced nightmares and were enrolled in a voluntary inpatient stress unit at the Topeka VA. Given that individuals enrolled in the inpatient unit were under constant treatment conditions, there are no specific demographic requirements for this study. Participants were informed about the study and, if interested, completed the informed consent process. Consented participants were randomly assigned to a treatment group. Self-reported symptoms (e.g., sleep duration, quality, presence and severity of nightmares) were assessed every morning via sleep diaries and sleep was recorded objectively via the DREEM device. Participants were debriefed upon completion of treatment. All participants who consent for participation and meet inclusion/exclusion criteria were randomly assigned into one of three potential groups. Participants were randomly sorted into groups via an ordered systematic separation pattern. Both participants and data analysts were blinded to the group assignments. Specific protocol details for each group are described below. Regardless of group assignment, all participants followed the treatment unit's standard protocols, with the only change being that Groups 2 (Cognitive Processing Therapy + Cognitive Behavioral Therapy for Insomnia) & 3 (Cognitive Processing Therapy + Cognitive Behavioral Therapy for Insomnia + Nightmare Augmented Protocol-NAP) participated in an Exposure, Relaxation, and Rescripting Therapy (ERRT) and Group 1 (Cognitive Processing Therapy only group) did not. The NAP intervention: Veterans in group 3 completed the Cognitive Processing Therapy +ERRT protocol augmented by the auditory stimulation delivered by the DREEM device. Auditory stimulation consists of exposure and sleep stimulation. Exposure stimulation includes playing a rhythmic tone at 40-60hz (commonly referred to as pink noise) throughout the ERRT session and during the presleep exposure portion of ERRT. During the ERRT session, the tone will be played softly so as not to interfere with the session and will be played throughout the entire session. Before sleep, the veteran played the 40-60hz tone via their smartphone while they read their rescripted nightmare. During sleep, the 40-60hz tone was delivered during slow-wave-sleep (SWS) by the DREEM device. The DREEM device is a headband like device used to measure and enhance sleep via auditory stimulation. The DREEM device uses electroencephalogram (EEG) to determine when an individual is in SWS and then uses built in speakers to play the desired tone (this tone is undetectable to the dreamer and will not wake them). The DREEM device has been demonstrated to be a safe and effective device for measuring and enhancing sleep. Data Collection: Presleep arousal, sleep quality, and the occurrence of a posttrauma nightmare(s) were assessed via sleep diaries. Sleep diaries were completed every night prior to bedtime and every morning upon awakening. Each daily diary consisted of outcome measures including the Nightmare Diary entry, Presleep Arousal Scale (PAS), Morning Diary entry, Pittsburgh Sleep Quality Index (PSQI), and the Trauma-Related Nightmare Survey (TRNS). Statistical Analyses: Repeated measures Analysis of Variance (ANOVA) will be used to compare nightmare frequency and sleep quality both within and between treatment groups. These analyses will be used to determine if groups had significant reductions in nightmare frequency/ improvements in sleep quality improvement and to determine if there are group differences in sleep quality. For participants in the NAP group, the researchers will use multilevel modeling (MLM) to determine whether there were changes in sleep macro or micro architecture concurrent with introduction of the auditory tone. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05120674
Study type Interventional
Source VA Eastern Kansas
Contact
Status Terminated
Phase N/A
Start date August 7, 2018
Completion date May 27, 2021

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