Nightmare Deconstruction and Reprocessing vs. NightWare Wristband

This pilot trial is testing two emerging treatments for post-traumatic nightmares: NDR, a novel exposure psychotherapy that targets post-trauma nightmares, and NW, a wristband device that provides non-exposure treatment by detecting physiologic signals of a possible nightmare and gently vibrating to rouse the sleeper without fully waking them. Nightmares and sleep disturbance are important treatment targets because they are prevalent beginning in the acute post-trauma phase and often are long lasting and treatment-resistant. The overall goal of this project is to assess the potential efficacy of these contrasting treatments, which have the potential to treat acute post-trauma nightmares and sleep disturbance in low-resource or far-forward military environments and provide long-term solutions for individuals with treatment-resistant nightmares. The investigators will also test the feasibility collecting biomarker samples at specific time points during treatment, which will provide more information about the potential utility of molecular, neuroendocrine, and physiologic signals of psychological distress related to exposure or non-exposure methods of treating nightmares.

Study Design:

Following up on preliminary studies of NDR and NW, the proposed study will be a Phase IIa, single-blind randomized controlled pilot trial. Up to 30 servicemembers and veterans will be consented. Study duration for each participant is 18 weeks: 6 weeks of observation, 6 weeks of active treatment, and 6 weeks of follow up. Participants have weekly assessments during the observation period, which serves as a within-subjects control. At the end of observation, Participants are randomized to 6 weeks of active treatment in either the NDR or the NW treatment arm. After completing the active treatment period, follow-up assessments are at 2 weeks, 4 weeks, and 6 weeks post-treatment.

Participants in the NW group will receive psychoeducation, equipment instruction, and troubleshooting at each treatment visit. Participants in the NDR group will receive psychoeducation, and NDR treatment at each treatment visit. The investigators will collect blood samples from both treatment groups immediately before and after the first treatment visit (first exposure to nightmares for the NDR arm), and and immediately before and after the final treatment visit (last exposure to nightmares for the NDR arm). All participants will be issued an Empatica EmbracePlus wristband to be worn 23 hours per day. The investigators anticipate that participants in both treatment groups will have a clinically significant decrease in nightmares and nightmare-related sleep disturbance and that molecular, neuroendocrine, and physiologic markers of stress will relate to treatment arm (trauma activation through exposure in NDR or no trauma activation in NW). The investigators also anticipate that biosample collection, processing, and storage methods will be feasible.

Primary and Secondary Outcomes:

The primary outcomes of the proposed trial are nightmare severity and insomnia severity. Nightmare severity will be measured by the Disturbing Dreams and Nightmares Severity Index (DDNSI). Insomnia severity will be assessed using the Insomnia Severity Index (ISI). Nightmare and insomnia severity and variability will be assessed with the DDNSI, the ISI, and EmpaticaPlus wristband data at 14 time points, including screening, once a week during the observation and treatment periods, and follow-up visits.

Secondary outcomes are molecular and neuroendocrine biomarkers (BDNF, cortisol, and ACTH) as well as physiologic parameters (HRV, EDA, and accelerometry data). Change in BDNF, cortisol, and ACTH will be determined through assay of blood samples taken in all treatment groups before and after the first and last treatment sessions. Physiologic data collected via the Empatica EmbracePlus wristband will include HRV and EDA during treatment sessions and accelerometry to track sleep patterns.