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Treatment of OSA with CPAP Is Associated with Improvement in PTSD Symptoms among Veterans.

ABSTRACT: STUDY OBJECTIVES:Posttraumatic stress disorder (PTSD) is common among veterans of the military, with sleep disturbance as a hallmark manifestation. A growing body of research has suggested a link between obstructive sleep apnea and PTSD, potentially due to obstructive sleep apnea (OSA) related sleep disruption, or via other mechanisms. We examined the hypothesis that treatment of OSA with positive airway pressure would reduce PTSD symptoms over 6 months. METHODS:A prospective study of Veterans with confirmed PTSD and new diagnosis of OSA not yet using PAP therapy were recruited from a Veteran's Affairs sleep medicine clinic. All subjects were instructed to use PAP each night. Assessments were performed at 3 and 6 months. The primary outcome was a reduction in PTSD symptoms at 6 months. RESULTS:Fifty-nine subjects were enrolled; 32 remained in the study at 6 months. A significant reduction in PTSD symptoms, measured by PCL-S score was observed over the course of the study (60.6 ± 2.7 versus 52.3 ± 3.2 points; p < 0.001). Improvement was also seen in measures of sleepiness, sleep quality, and daytime functioning, as well as depression and quality of life. Percentage of nights in which PAP was used, but not mean hours used per night, was predictive of improvement. CONCLUSIONS:Treatment of OSA with PAP therapy is associated with improvement in PTSD symptoms, although the mechanism is unclear. Nonetheless, PAP should be considered an important component of PTSD treatment for those with concurrent OSA. Improving PAP compliance is a challenge in this patient population warranting further investigation. CLINICAL TRIAL REGISTRATION:ClinicalTrials.gov, ID: NCT02019914. COMMENTARY:A commentary on this article appears in this issue on page 5.

SUBMITTER: Orr JE

PROVIDER: S-EPMC5181615 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature

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Treatment of OSA with CPAP Is Associated with Improvement in PTSD Symptoms among Veterans.

Orr Jeremy E JE Smales Carolina C Alexander Thomas H TH Stepnowsky Carl C Pillar Giora G Malhotra Atul A Sarmiento Kathleen F KF

Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine 20170115 1

<h4>Study objectives</h4>Posttraumatic stress disorder (PTSD) is common among veterans of the military, with sleep disturbance as a hallmark manifestation. A growing body of research has suggested a link between obstructive sleep apnea and PTSD, potentially due to obstructive sleep apnea (OSA) related sleep disruption, or via other mechanisms. We examined the hypothesis that treatment of OSA with positive airway pressure would reduce PTSD symptoms over 6 months.<h4>Methods</h4>A prospective stud ...[more]

PMID: 27707436

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Project description:BackgroundAlthough current treatments for Post-Traumatic Stress Disorder (PTSD) in war veterans are effective, unfortunately 30-50% still do not benefit from these treatments. Trauma-focused therapies, eg exposure therapy, are primarily based on extinction processes in which the endocannabinoid system (ECS) plays a significant role. Therefore, it can be hypothesized that poor treatment response on trauma-focused therapy due to extinction deficits may be associated with a poorly functioning ECS. The present study examined whether the endocannabinoids anandamide (AEA) and 2-arachidonylglycerol (2-AG) are associated with post-treatment symptom reduction.MethodsBlood plasma levels of AEA and 2-AG were determined in war veterans with a PTSD diagnosis (n = 54) and combat controls (n = 26) before and after a 6-8 month interval. During this period veterans with PTSD received trauma-focused therapy (eg cognitive behavioral therapy with exposure or eye-movement desensitization and reprocessing). Clinical symptoms were assessed before and after therapy with the Clinician Administered PTSD Scale (CAPS), State-Trait Anxiety Inventory (STAI) and Mood and Anxiety Symptom Questionnaire (MASQ).ResultsRegression analysis demonstrated that pretreatment endocannabinoid levels were not predictive of PTSD symptom reduction. Additionally, baseline endocannabinoid levels did not differ between either PTSD and combat controls or between combat controls, treatment responders, and non-responders. Only cortisol levels significantly decreased over time from pre- to posttreatment (p = .041). Endocannabinoid levels were significantly lower in individuals who reported cannabis use during their lifetime, independent of PTSD diagnosis. Furthermore, correlation analysis revealed that pretreatment 2-AG levels in PTSD were positively correlated with anxious arousal (r = .354, p = .015) and negatively with avoidance symptoms (r = -.271, p = .048). Both posttreatment AEA and 2-AG were positively correlated with trait anxiety (AEA r = .459, p = .003; 2-AG r = .423, p = .006), anxious arousal (AEA r = .351, p = .024; 2-AG r = .311, p = .048) and general distress depression symptoms (AEA r = .414, p = .007; 2-AG r = .374, p = .016).ConclusionSince endocannabinoids are mainly generated 'on demand', future work could benefit by investigating endocannabinoid circulation under both baseline and stressful conditions. In line with previous research cannabis use was associated with lower endocannabinoid levels. The correlation analysis between pre- and posttreatment endocannabinoid levels and pre- and posttreatment clinical symptomatology were exploratory analysis and should be replicated in future research.

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Treatment of OSA with CPAP Is Associated with Improvement in PTSD Symptoms among Veterans.

Publications

Treatment of OSA with CPAP Is Associated with Improvement in PTSD Symptoms among Veterans.

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