Active clinical trials for "Stress Disorders, Post-Traumatic"

This project assesses the usability and feasibility of a multi-behavioral computerized, tailored intervention (CTI) or expert system delivered via the Internet for veterans with Post-Traumatic Stress symptoms. Three behavioral health risk factors, (1) smoking, (2) depression, and (3) stress, that are associated with Post-Traumatic Stress Disorder (PTSD), are included in the Computerized, Tailored Intervention (CTI) system. The project adapts and modifies an existing CTI system built on the Transtheoretical Model of Behavior Change (TTM) to make it relevant to a veteran population. The system has been successfully utilized with general adult populations. The study utilizes methods that are characteristic of a product development project. Each of the four project phases are sequential and build upon the results of the previous phase. Phase 1 focuses on the review of current CTI programs on smoking cessation, stress management, and depression prevention, and integrating them into a multi-behavioral program for application with veterans. Phase 2 includes the development and adaptation of text-based feedback messages and multimedia components for smoking cessation, stress management, and depression prevention for veterans. Initial testing of the modified CTI programs commences in Phase 3. Cognitive and usability testing with veterans are performed, and additional modifications to the behavioral modules are made based on the test results. Phase 4 focuses on a feasibility study to test the multi-behavioral CTI system with veterans online.

The purpose of the study is to assess the dying process in critically ill patients with decision to withdraw invasive mechanical ventilation in anticipation of death and to compare effects of extubation and those of terminal weaning of mechanical ventilation on relatives and care givers. The investigators primary hypothesis is that extubation is associated with less symptoms of post-traumatic stress disorders in relatives, as compared to terminal weaning.

Posttraumatic stress disorder (PTSD) is a common and debilitating neuropsychiatric disorder in which an acute fear response to a traumatic event does not abate. This failure to recover from trauma is thought to be due at least in part to a deficit in learning not to fear situations and stimuli previously associated with the trauma (i.e., specifically due to a failure of extinction recall). Pavlovian fear conditioning can be simulated and measured experimentally in humans using a 2-day fear conditioning paradigm developed by our group, wherein conditioning and extinction learning phases are conducted on Day 1, and extinction recall is tested on Day 2. Recent functional magnetic resonance imaging (fMRI) evidence indicates that PTSD is associated with hyper-responsivity of the insular cortex and hyporesponsivity of the ventromedial prefrontal cortex (VMPFC) during exposure to fear-inducing stimuli, consistent with altered excitability of brain regions mediating fear conditioning and extinction. As the brain's principal inhibitory neurotransmitter, GABA exerts a prominent role in modulating neuronal excitability. Interestingly, there are reports that adjunctive treatment with GABA-enhancing antiepileptics is efficacious in PTSD. There is also evidence, albeit inconsistent, that lower serum GABA levels predict a more chronic course of the illness. However, it is unclear whether serum levels accurately reflect brain GABA, which may contribute to inconsistency of serum findings. Moreover, it is possible that GABA alterations may vary in their presence, nature and significance across brain regions implicated in PTSD. The proposed study will examine the relationship of PTSD symptoms and behavioral fear conditioning deficits with regional brain gamma-aminobutyric acid (GABA) using proton magnetic resonance spectroscopy (1H-MRS). We have the following aims and hypotheses: To determine whether GABA alterations are associated with the categorical diagnosis of PTSD and not merely exposure to trauma. It is hypothesized that PTSD will be associated with higher GABA in VMPFC and lower GABA in the right insula. To determine whether GABA levels are significantly associated with dimensional measures of PTSD symptom severity and individual symptom dimensions. It is predicted that higher GABA in the VMPFC and lower GABA in the right anterior insula will be associated with greater total symptom severity. To determine whether GABA in VMPFC and right anterior insula are significantly associated with measures of extinction recall failure and anxiety sensitivity in PTSD. It is hypothesized that VMPFC GABA will be positively correlated with skin conductance response to a conditioned stimulus that had previously been extinguished and insula GABA will be negatively correlated with anxiety sensitivity.

Post traumatic stress disorder (PTSD) has emerged as a significant problem among troops returning from combat zones. A majority of these veterans will report difficulty maintaining or initiating sleep. The purpose of this research will be to conduct a prospective, randomized, wait list controlled, small scale feasibility study to examine if the use of an auricular acupuncture regimen improves quality of sleep for Operation Iraqi Freedom/Operation Enduring Freedom (OIF/OEF)veterans with PTSD receiving standard PTSD treatment. Hypothesis: Objective and subjective sleep disturbances and sleep quality will be improved in OIF/OEF veterans who receive auricular acupuncture in conjunction with standard PTSD therapy or standard therapy alone.

To investigate the prevalence of posttraumatic stress disorder (PTSD) in patients that underwent surgery for primary rhegmatogenous retinal detachment (RRD) and to determine variables associated with the disorder. Design: Consecutive prospective observational study.

Posttraumatic stress disorder (PTSD) is a serious and often chronic response to overwhelmingly stressful events as Road Traffic Accident. Moreover PTSD is associated with increased rates of medical morbidity, poor health-related quality of life, and functional impairment. PTSD is prevalent in primary care settings after road traffic accident, where approximately 25% of patients meet diagnostic criteria for the disorder. Despite the development of a number of efficacious behavioral and pharmacological treatments, only a minority of patients with PTSD receive mental health services. PTSD is frequently underrecognized and untreated in Emergency Department and Surgical Unit. Then, early diagnosis and prevention of PTSD might help to identify patients with PTSD high risk and lead them to benefit of personalized cares. Nevertheless it is not possible (neither useful) to provide psychological cares for each road traffic accident victim. This is the reason why we think that nurses can help to screen patients who need treatment for PTSD Hypothesis : Recognition of specific clinical or biological signs occurring during road traffic accident victim hospitalization in surgical unit could allow beginning specific treatment using consultation liaison psychiatry. Early treatment could allow decreasing incidence of psychotraumatic disorders, increasing surgical functional efficacy and improve convalescence programs. The use of a specific questionnaire could help to screen this disorder. We have created the DEPITAC scale : a short screening questionnaire with 10 items. This study will be evaluated DEPITAC's 10-item screen for posttraumatic stress disorder (PTSD) for use in surgical or emergency department.

PTSD is a common and distressing possible outcome following exposure to a traumatic event. Recent studies show that memory processes may be central to the development of the disorder, and interrupting the consolidation of traumatic memories may prevent the disorder from developing. Specifically the use of a visual spatial task has been shown to reduce a key characteristic of PTSD, intrusions, in non-clinical populations. This study aims to administer a visual spatial task to recent trauma survivors in the Emergency Room, and compare PTSD and symptoms development in these patients as compared to a control group who did not carry out the task. The study hypothesizes that the task will result in less PTSD, lower levels of intrusions, dissociation and pain.

Approximately, post-traumatic stress disorder (PTSD) occurs in 8% of the adult population over time. Exposure to traumatic events increases the risk of poor physical health and often leads to disability. The biology of PTSD is continually being explored in order to help find better treatments for this debilitating disorder. In our study, we propose to further our understanding of PTSD. Prior research has found that patients with PTSD have changes in the stress hormone pathway. In this pathway, there is release of certain hormones from the pituitary gland in the brain that feed into the blood stream and tell the adrenal gland to produce stress hormones. The pituitary is a gland located at the base of the brain which controls the hormones in the body, including the stress hormones. Research in other psychiatric disorders has found changes in the pituitary volume along with changes in the hormones. This has not been investigated yet in PTSD. Therefore, we propose in our study to measure pituitary volume in people with PTSD and look at the changes in the stress hormone pathway. Moreover, we will investigate whether other hormones are affected by PTSD. In this way, we can further our understanding of the the biology of PTSD and help develop new therapies which can intervene through the hormonal system.

People experience a wide range of outcomes following a traumatic event. Although rates differ depending on type of trauma, 20-60% of trauma victims may develop posttraumatic stress disorder (PTSD). However, not all trauma victims develop PTSD. Previous research has found that trauma victims who develop PTSD excrete lower levels of urinary cortisol immediately after a trauma than victims who do not develop PTSD. Other research has suggested that increasing levels of cortisol may protect against the development of PTSD in patients such as yourself- but this has not yet been examined. Cortisol is a naturally occurring hormone in your body, and the present study is designed to test whether increasing cortisol levels can protect against or decrease symptoms of PTSD. Participants in this study will be randomly assigned to one of two treatment groups. Participants will receive either hydrocortisone (20mg, twice per day) or a placebo (a sugar pill) for 10 days with a six-day taper. There is an equal chance of being in either treatment group, and neither the participant nor the experimenters will know which treatment was received (except in case of an emergency).

The purpose of this study is to examine if treatment of post-traumatic stress disorder in combat veterans with paroxetine changes brain responses as measured by functional magnetic resonance imaging and if brain responses can predict who will get better with treatment.