Post-Traumatic Stress Disorder Treatment Outcomes in Military Clinics.

INTRODUCTION: Despite a wide literature describing the impact of PTSD on military personnel, there is limited information concerning the results of PTSD treatment within military clinics mental health. Having such information is essential for making predictions about service members' chances of recovery, choosing best treatments, and for understanding if new interventions improve upon the standard of care. MATERIALS AND METHODS: We reviewed data from the Psychological Health Pathways (PHP) database. Psychological Health Pathways is a standardized battery of demographics and psychometric outcome measures, including measurement of PTSD symptom severity, that is collected in military mental health clinics. We examined changes in PTSD symptom severity scores over time and developed logistic regression models to predict who responded to treatment, showed clinical success, or improved to the point that they could likely stay in the military. RESULTS: After about 10 weeks in mental health clinics, severity scores for PTSD, sleep, depression, resilience, and disability all improved significantly. Of 681 patients tracked, 38% had clinically significant reductions on the PTSD Checklist (PCL) (i.e., "treatment response"), 28% no longer met criteria for PTSD on the PCL, and 23% did both (i.e., "clinical treatment success"). For the ultimate end point of "military treatment success," defined as meeting criteria for both clinical treatment success and reporting that their work-related disability was mild or better, 12.8% of patients succeeded. Depression scores were the most powerful predictor of treatment failure. CONCLUSIONS: Recovery from PTSD is possible during military service, but it is less likely in individuals with certain negative prognostic factors, most notably severe depression.

A Randomized, Head-to-Head Study of Virtual Reality Exposure Therapy for Posttraumatic Stress Disorder.

Virtual reality exposure therapy (VRET) is one of the few interventions supported by randomized controlled trials for the treatment of combat-related posttraumatic stress disorder (PTSD) in active duty service members. A comparative effectiveness study was conducted to determine if virtual reality technology itself improved outcomes, or if similar results could be achieved with a control exposure therapy (CET) condition. Service members with combat-related PTSD were randomly selected to receive nine weeks of VRET or CET. Assessors, but not therapists, were blinded. PTSD symptom improvement was assessed one week and 3 months after the conclusion of treatment using the clinician-administered PTSD scale (CAPS). A small crossover component was included. Results demonstrated that PTSD symptoms improved with both treatments, but there were no statistically significant differences between groups. Dropout rates were higher in VRET. Of those who received VRET, 13/42 (31%) showed >30% improvement on the CAPS, versus 16/43 (37%) who received CET. Three months after treatment, >30% improvement was seen in 10/33 (30%) of VRET participants and 12/33 (36%) in CET. Participants who crossed over (n = 11) showed no statistically significant improvements in a second round of treatment, regardless of condition. This study supported the utility of exposure therapy for PTSD, but did not support additional benefit by the inclusion of virtual reality.

A Double-Blinded, Randomized, Placebo-Controlled Sub-Dissociative Dose Ketamine Pilot Study in the Treatment of Acute Depression and Suicidality in a Military Emergency Department Setting.

BACKGROUND: Rates of completed suicide in the military have increased. Options are limited for acute relief of depression and suicidal ideation. Traditional treatments' effects take weeks to months. A novel, rapid, therapeutic target has emerged with the N-methyl-D-aspartate antagonist ketamine. Previous studies suggest that a single dose of intravenous (IV) ketamine rapidly alleviates depression and suicidality. METHODS: In this proof of concept study, an active duty convenience sample population presenting to the emergency department (ED) meeting criteria for inpatient psychiatric admission as a result of depression and suicidal thinking were randomized to receive either a subdissociative dose (0.2 mg/kg) of IV ketamine or equivalent volume of normal saline (placebo). Subjects were evaluated for symptoms throughout a 4-hour ED course, at hospital discharge, and 2 weeks postdischarge. RESULTS: Methodological problems limited analyzable data to 10 subjects. Two of three who received ketamine experienced dramatic decreases in suicidality and hopelessness within 40 minutes. No such improvements were seen in any of seven controls over the 4-hour observation in the ED. At discharge from the hospital, there was no clinically significant difference. No subjects described adverse symptoms. CONCLUSION: Despite methodology difficulties noted in this pilot study, there was statistical improvement in intervention group versus controls.

Stellate Ganglion Block for the Treatment of Posttraumatic Stress Disorder: A Randomized, Double-Blind, Controlled Trial.

OBJECTIVE: In this study, we aimed to determine if stellate ganglion block (SGB) could reduce symptoms of posttraumatic stress disorder (PTSD) in comparison with sham therapy in military service members. METHODS: In a randomized trial in which both participants and assessors were blind, participants with PTSD received either an SGB or a sham procedure. Posttraumatic stress disorder symptoms were measured using the CAPS (Clinician-Administered PTSD Scale) and self-report measures of PTSD, depression, anxiety, and pain. Subjects underwent assessment before the procedure and at 1 week, 1 month, and 3 months after the procedure. Patients receiving sham injections were allowed to cross over to the treatment group, and participants who maintained criteria for PTSD were allowed to receive a second SGB treatment. RESULTS: Posttraumatic stress disorder, anxiety, and depression scores all showed improvement across time, but there was no statistically or clinically relevant difference in outcomes between the active and control groups. Individuals who crossed over from sham treatment to SGB similarly showed no greater improvement with the SGB treatment. Improvement in CAPS was greater with a second SGB treatment than after the first treatment. CONCLUSIONS: Although previous case series have suggested that SGB offers an effective intervention for PTSD, this study did not demonstrate any appreciable difference between SGB and sham treatment on psychological or pain outcomes. Future studies should examine if differences in treatment methods or patient population could allow individuals with PTSD to benefit from SGB, but current evidence does not support widespread or indiscriminant clinical use of the procedure for PTSD.

Outcomes from eye movement desensitization and reprocessing in active-duty service members with posttraumatic stress disorder.

OBJECTIVE: Eye movement desensitization and reprocessing (EMDR) is one of the therapy interventions recommended by the Veterans Affairs and Department of Defense Clinical Practice Guidelines. However, the literature concerning the effectiveness of this treatment modality in military service members is sparse. This study investigated the efficacy of EMDR in active-duty service members. METHOD: We conducted an effectiveness study with a record review from active-duty military mental health clinics where clinical outcomes had been monitored over a 10-week period using self-report measures of posttraumatic stress and disability. Symptom scores were examined over time in 331 service members who met presumptive criteria for the disorder on the PTSD Checklist-Military Version (PCL-M), who were in psychotherapy, and who received (n = 46) or didn't receive (n = 285) EMDR. RESULTS: Results indicated that patients receiving EMDR had significantly fewer therapy sessions over 10 weeks but had significantly greater gains in their PCL-M scores than did individuals not receiving EMDR. CONCLUSIONS: Randomized, controlled trials are still needed, but these findings provide further support for the use of EMDR in service members with PTSD. (PsycINFO Database Record

Alcohol-Related Consequences Mediating PTSD Symptoms and Mental Health-Related Quality of Life in OEF/OIF Combat Veterans.

Veterans returning from Operation Enduring Freedom and Operation Iraqi Freedom (OEF/OIF) have been found to be at increased risk for post-traumatic stress disorder (PTSD) and alcohol use disorders, leading to negative mental health-related quality of life (MHRQoL). The current study examined the unique impact of alcohol consumption levels versus alcohol-related consequences on the relationship between PTSD symptoms and MHRQoL in a sample of OEF/OIF combat veterans (N = 205, median age 29, 95% men). Mediation analyses indicated that the effect of PTSD symptoms on MHRQoL was explained only by alcohol-related consequences and not by alcohol consumption. Findings highlight the importance of including alcohol-related consequences in clinical assessment and intervention programs for OEF/OIF veterans. Additionally, this study enhances knowledge regarding the underlying mechanisms of functional impairment related to PTSD and alcohol use disorders.

Importance of Virtual Reality to Virtual Reality Exposure Therapy, Study Design of a Randomized Trial.

Post Traumatic Stress Disorder (PTSD) can be a debilitating problem in service members who have served in Iraq or Afghanistan. Virtual Reality Exposure Therapy (VRET) is one of the few interventions demonstrated in randomized controlled trials to be effective for PTSD in this population. There are theoretical reasons to expect that Virtual Reality (VR) adds to the effectiveness of exposure therapy, but there is also added expense and difficulty in using VR. Described is a trial comparing outcomes from VRET and a control exposure therapy (CET) protocol in service members with PTSD.

The effectiveness of an attention bias modification program as an adjunctive treatment for Post-Traumatic Stress Disorder.

Attention bias modification (ABM) may be an effective treatment for anxiety disorders (Beard, Sawyer, & Hofmann, 2012). As individuals with PTSD possess an attentional bias towards threat-relevant information ABM may prove effective in reducing PTSD symptoms. We examined the efficacy of ABM as an adjunct treatment for PTSD in a real-world setting. We administered ABM in conjunction with prolonged exposure or cognitive-processing therapy and medication in a community inpatient treatment facility for military personnel diagnosed with PTSD. Participants were randomized to either ABM or an attention control condition (ACC). While all participants experienced reductions in PTSD symptoms, participants in the ABM group experienced significantly fewer PTSD and depressive symptoms at post-treatment when compared to the ACC group. Moreover, change in plasticity of attentional bias mediated this change in symptoms and initial attentional bias moderated the effects of the treatment. These results suggest that ABM may be an effective adjunct treatment for PTSD.

Voxel-wise resting-state MEG source magnitude imaging study reveals neurocircuitry abnormality in active-duty service members and veterans with PTSD.

Post-traumatic stress disorder (PTSD) is a leading cause of sustained impairment, distress, and poor quality of life in military personnel, veterans, and civilians. Indirect functional neuroimaging studies using PET or fMRI with fear-related stimuli support a PTSD neurocircuitry model that includes amygdala, hippocampus, and ventromedial prefrontal cortex (vmPFC). However, it is not clear if this model can fully account for PTSD abnormalities detected directly by electromagnetic-based source imaging techniques in resting-state. The present study examined resting-state magnetoencephalography (MEG) signals in 25 active-duty service members and veterans with PTSD and 30 healthy volunteers. In contrast to the healthy volunteers, individuals with PTSD showed: (1) hyperactivity from amygdala, hippocampus, posterolateral orbitofrontal cortex (OFC), dorsomedial prefrontal cortex (dmPFC), and insular cortex in high-frequency (i.e., beta, gamma, and high-gamma) bands; (2) hypoactivity from vmPFC, Frontal Pole (FP), and dorsolateral prefrontal cortex (dlPFC) in high-frequency bands; (3) extensive hypoactivity from dlPFC, FP, anterior temporal lobes, precuneous cortex, and sensorimotor cortex in alpha and low-frequency bands; and (4) in individuals with PTSD, MEG activity in the left amygdala and posterolateral OFC correlated positively with PTSD symptom scores, whereas MEG activity in vmPFC and precuneous correlated negatively with symptom score. The present study showed that MEG source imaging technique revealed new abnormalities in the resting-state electromagnetic signals from the PTSD neurocircuitry. Particularly, posterolateral OFC and precuneous may play important roles in the PTSD neurocircuitry model.

Risk of PTSD in service members who were fired upon by the enemy is higher in those who also returned fire.

An unusual characteristic of the recent wars in Iraq and Afghanistan is that, because of attacks by snipers and improvised explosive devices (IED), many U.S. service members may come under attack without having exchanged fire. It was hypothesized that this would be associated with greater severity of post-traumatic stress disorder (PTSD) symptoms. The severity of self-reported symptoms of PTSD and depression were examined among service members who reported being shot at or attacked by an IED, those who had these experiences but who also shot at the enemy, and those who reported neither experience. Results showed that those with neither exposure reported the lowest symptom severity, but, contrary to expectations, service members who had been attacked but not shot at the enemy had less severe symptoms than those who had exchanged fire. This may support findings from earlier generations of veterans that shooting at or killing the enemy may be a particularly traumatic experience.

Single-subject-based whole-brain MEG slow-wave imaging approach for detecting abnormality in patients with mild traumatic brain injury.

Traumatic brain injury (TBI) is a leading cause of sustained impairment in military and civilian populations. However, mild TBI (mTBI) can be difficult to detect using conventional MRI or CT. Injured brain tissues in mTBI patients generate abnormal slow-waves (1-4 Hz) that can be measured and localized by resting-state magnetoencephalography (MEG). In this study, we develop a voxel-based whole-brain MEG slow-wave imaging approach for detecting abnormality in patients with mTBI on a single-subject basis. A normative database of resting-state MEG source magnitude images (1-4 Hz) from 79 healthy control subjects was established for all brain voxels. The high-resolution MEG source magnitude images were obtained by our recent Fast-VESTAL method. In 84 mTBI patients with persistent post-concussive symptoms (36 from blasts, and 48 from non-blast causes), our method detected abnormalities at the positive detection rates of 84.5%, 86.1%, and 83.3% for the combined (blast-induced plus with non-blast causes), blast, and non-blast mTBI groups, respectively. We found that prefrontal, posterior parietal, inferior temporal, hippocampus, and cerebella areas were particularly vulnerable to head trauma. The result also showed that MEG slow-wave generation in prefrontal areas positively correlated with personality change, trouble concentrating, affective lability, and depression symptoms. Discussion is provided regarding the neuronal mechanisms of MEG slow-wave generation due to deafferentation caused by axonal injury and/or blockages/limitations of cholinergic transmission in TBI. This study provides an effective way for using MEG slow-wave source imaging to localize affected areas and supports MEG as a tool for assisting the diagnosis of mTBI.

Virtual reality graded exposure therapy with arousal control for the treatment of combat related posttraumatic stress disorder: a follow up case series.

Important challenges confronting DOD/military medical care are that of maintaining or increasing quality of care and increasing the effectiveness of treatments for warriors diagnosed with Posttraumatic Stress Disorder (PTSD) secondary to their combat deployments to Iraq and/or Afghanistan. Virtual Reality Graded Exposure Therapy with Arousal Control (VR-GET) has demonstrated a positive treatment effectiveness resulting in significant reductions of PTSD symptom severity. This positive treatment effectiveness has been maintained for up to 22 weeks after VR-GET therapy was completed. A robust methodology for the assessment of Virtual Reality efficacy suggests that the ideal time for follow-up begins at twelve months. Others have suggested that follow-up should occur between two and four years post treatment. In this report we describe the outcome of VR-GET for the treatment of combat-related PTSD with three warriors between five and seven years following their having completed treatment.

Impact of childhood maltreatment on physical health-related quality of life in U.S. active duty military personnel and combat veterans.

Previous studies have found an association between childhood maltreatment (CM) and health-related quality of life (HRQoL), and to a lesser extent have considered whether psychiatric symptoms may explain the relationship. This study aimed to further our understanding of the link between CM and HRQoL by testing whether posttraumatic stress disorder (PTSD) or depressive symptoms mediate the relationship between childhood maltreatment and physical HRQoL. Mediation models were examined in a sample of male Operation Enduring Freedom (OEF) and Operation Iraqi Freedom (OIF) active duty and combat veterans (n=249). PTSD and depressive symptoms mediated the relationship between CM and overall physical HRQoL, as well as participation in daily activities due to physical health, bodily pain, and social functioning. Mediation of the relationship between childhood maltreatment and physical and social functioning by depression and PTSD symptoms may lend support to neurobiological hypotheses that childhood maltreatment sensitizes the nervous system and after repeated trauma may lead to the development of psychiatric symptoms, which have a major impact on morbidity and mortality.

The effect of geographic moves on mental healthcare utilization in children.

PURPOSE: Geographic moves have been reported to have a negative impact on the mental health of children, but it is often difficult to separate the effect of the move from the circumstances that impelled it. Military populations may offer a way to examine this issue. Moves are common in military families, but parental employment and healthcare coverage remain constant. METHODS: Children of military parents with geographic moves in 2008 were compared with those without geographic moves with regard to the odds of mental health service use in 2009. RESULTS: This study included 548,336 children aged 6-17 years, and 179,486 (25%) children moved in 2008. Children aged 6-11 years with a geographic move had higher odds of mental health and outpatient visits (odds ratio [OR] 1.03; 95% confidence interval [CI] 1.01-1.06). Children aged 12-17 years with a geographic move had higher odds of mental outpatient visits (OR 1.04; 95% CI 1.01-1.07), psychiatric hospitalizations (OR 1.19; 95% CI 1.07-1.32), and emergency psychiatric visits (OR 1.20; 95% CI 1.07-1.32). CONCLUSION: Children with a geographic move in the previous year have increased odds of mental health encounters. Among adolescents, this increase extends to psychiatric hospitalizations and emergency visits.

Effect of virtual reality PTSD treatment on mood and neurocognitive outcomes.

Virtual reality (VR) is an emerging tool to help treat posttraumatic stress disorder (PTSD). Previously published studies have shown that VR graded exposure therapy (VR-GET) treatment can result in improvements in PTSD symptoms. Less is known about the impact on depression, general anxiety, and neuropsychological functioning in patients with PTSD. This study examined changes in self-reports of PTSD, depression, and anxiety before and after treatment, and also examined neuropsychological functioning as assessed by a computerized test of simple reaction time, procedural reaction time, and performance on the congruent, incongruent, emotional, and neutral (match the color of the "nonsense word") Stroop tests. Results showed that subjects treated with VR-GET showed significant reductions in PTSD and anxiety severity and significant improvements on the emotional Stroop test. Changes in depression and other measures of neuropsychological function were not significant. Change scores on the emotional Stroop test did not correlate with changes in self-report measures of PTSD. Overall, these findings support the use of VR-GET as a treatment for PTSD but indicate that benefits may be narrowly focused. Additional treatments may be needed after or alongside VR-GET for service members with neuropsychological impairments.

Apparent comorbidity of bipolar disorder in a population with combat-related post-traumatic stress disorder.

Combat is often associated with the diagnosis of post-traumatic stress disorder. Battle may also lead to other emotional extremes. Sometimes this is enough to meet criteria for a diagnosis of bipolar disorder (BPD), but it is open to debate if this is clinically appropriate. This study examined the rate of BPD, as assessed by structured interview, in combat veterans who clinicians believed met the criteria for post-traumatic stress disorder but not BPD. Structured interviews were conducted with 109 such participants. Close to 81% endorsed a history of a major depressive episode, 34.9% endorsed a history of manic episode, and 27.5% endorsed a history of a hypomanic episode. According to the interviews, 54.1% participants experienced BPD, including 34.9% who experienced BPD type I. Clinicians were aware of these results and observed the individuals for a prolonged period afterward, but the clinical diagnosis did not change to include BPD in any of these individuals. Future research is needed to establish reliable and valid methods to make a diagnosis of BPD in the presence of comorbid conditions and stressors and thus guide clinicians with better treatment options.

Caring letters for suicide prevention: implementation of a multi-site randomized clinical trial in the U.S. military and Veteran Affairs healthcare systems.

Caring letters is a suicide prevention intervention that entails the sending of brief messages that espouse caring concern to patients following discharge from treatment. First tested more than four decades ago, this intervention is one of the only interventions shown in a randomized controlled trial to reduce suicide mortality rates. Due to elevated suicide risk among patients following psychiatric hospitalization and the steady increase in suicide rates among the U.S. military personnel, it is imperative to test interventions that may help prevent suicide among high-risk military personnel and veterans. This paper describes the design, methods, study protocol, and regulatory implementation processes for a multi-site randomized controlled trial that aims to evaluate the effectiveness of a caring emails intervention for suicide prevention in the military and VA healthcare systems. The primary outcome is suicide mortality rates to be determined 24 months post-discharge from index hospital stay. Healthcare re-utilization rates will also be evaluated and comprehensive data will be collected regarding suicide risk factors. Recommendations for navigating the military and VA research regulatory processes and implementing a multi-site clinical trial at military and VA hospitals are discussed.

MEG source imaging method using fast L1 minimum-norm and its applications to signals with brain noise and human resting-state source amplitude images.

The present study developed a fast MEG source imaging technique based on Fast Vector-based Spatio-Temporal Analysis using a L1-minimum-norm (Fast-VESTAL) and then used the method to obtain the source amplitude images of resting-state magnetoencephalography (MEG) signals for different frequency bands. The Fast-VESTAL technique consists of two steps. First, L1-minimum-norm MEG source images were obtained for the dominant spatial modes of sensor-waveform covariance matrix. Next, accurate source time-courses with millisecond temporal resolution were obtained using an inverse operator constructed from the spatial source images of Step 1. Using simulations, Fast-VESTAL's performance was assessed for its 1) ability to localize multiple correlated sources; 2) ability to faithfully recover source time-courses; 3) robustness to different SNR conditions including SNR with negative dB levels; 4) capability to handle correlated brain noise; and 5) statistical maps of MEG source images. An objective pre-whitening method was also developed and integrated with Fast-VESTAL to remove correlated brain noise. Fast-VESTAL's performance was then examined in the analysis of human median-nerve MEG responses. The results demonstrated that this method easily distinguished sources in the entire somatosensory network. Next, Fast-VESTAL was applied to obtain the first whole-head MEG source-amplitude images from resting-state signals in 41 healthy control subjects, for all standard frequency bands. Comparisons between resting-state MEG sources images and known neurophysiology were provided. Additionally, in simulations and cases with MEG human responses, the results obtained from using conventional beamformer technique were compared with those from Fast-VESTAL, which highlighted the beamformer's problems of signal leaking and distorted source time-courses.

Stellate ganglion block improves refractory post-traumatic stress disorder and associated memory dysfunction: a case report and systematic literature review.

The prevalence of post-traumatic stress disorder (PTSD) has reached epidemic proportions among U.S. veterans, many of whom also have concurrent alcohol use disorder. This case report describes improvements in PTSD symptom severity and memory dysfunction in a combat-exposed veteran with persistent PTSD and alcohol use disorder following two treatments of stellate ganglion block (SGB). PTSD severity was measured using the PTSD Checklist, Military Version. Memory function was evaluated using the Rey Auditory Verbal Learning Test. One month after the first SGB, a 43.6% reduction in PTSD severity was observed along with increases in immediate memory (50%), recent memory (28%), and recognition memory (25%). Following a second SGB, PTSD severity decreased by 57.7% and memory function substantially improved, with pronounced changes in immediate memory (50%), recent memory (58%), and recognition memory (36%). One year after SGB treatments, the patient has stopped drinking alcohol, continues to have sustained relief from PTSD, has improved memory function, and has become gainfully employed. Future studies that employ robust epidemiologic methodologies are needed to generate confirmatory evidence that would substantiate SGB's clinical utility as an adjunctive treatment option for PTSD.