Posttraumatic Stress Disorder Status Research Articles

Neuropsychological Profiles of Deployment-Related Mild Traumatic Brain Injury: A LIMBIC-CENC Study.

Traumatic brain injury (TBI) is a concern for US service members and veterans (SMV), leading to heterogeneous psychological and cognitive outcomes. We sought to identify neuropsychological profiles of mild TBI (mTBI) and posttraumatic stress disorder (PTSD) among the largest SMV sample to date. We analyzed cross-sectional baseline data from SMV with prior combat deployments enrolled in the ongoing Long-term Impact of Military-relevant Brain Injury Consortium-Chronic Effects of Neurotrauma Consortium prospective longitudinal study. Latent profile analysis identified symptom profiles using 35 indicators, including physical symptoms, depression, quality of life, sleep quality, postconcussive symptoms, and cognitive performance. It is important to note that the profiles were determined independently of mTBI and probable PTSD status. After profile identification, we examined associations between demographic variables, mTBI characteristics, and PTSD symptoms with symptom profile membership. The analytic sample included 1,659 SMV (mean age 41.1 ± 10.0 years; 87% male); among them 29% (n = 480) had a history of non-deployment-related mTBI only, 14% (n = 239) had deployment-related mTBI only, 36% (n = 602) had both non-deployment and deployment-related mTBI, and 30% (n = 497) met criteria for probable PTSD. A 6-profile model had the best fit, with separation on all indicators (p < 0.001). The model revealed distinct neuropsychological profiles, representing a combination of 3 self-reported functioning patterns: high (HS), moderate (MS), and low (LS), and 2 cognitive performance patterns: high (HC) and low (LC). The profiles were (1) HS/HC: n=301, 18.1%; (2) HS/LC: n=294, 17.7%; (3) MS/HC: n=359, 21.6%; (4) MS/LC: n=316, 19.0%; (5) LS/HC: n=228, 13.7%; and (6) LS/LC: n=161, 9.7%. SMV with deployment-related mTBI tended to be grouped into lower functioning profiles and were more likely to meet criteria for probable PTSD. Conversely, SMV with no mTBI exposure or non-deployment-related mTBI were clustered in higher functioning profiles and had a lower likelihood of meeting criteria for probable PTSD. Findings suggest varied symptom and functional profiles in SMV, influenced by injury context and probable PTSD comorbidity. Despite diagnostic challenges, comprehensive assessment of functioning and cognition can detect subtle differences related to mTBI and PTSD, revealing distinct neuropsychological profiles. Prioritizing early treatment based on these profiles may improve prognostication and support efficient recovery.

Severe PTSD is marked by reduced oxytocin and elevated vasopressin

Neuroendocrine analyses of posttraumatic stress disorder (PTSD) have generally focused on hypothalamic-pituitary-adrenal (HPA) axis alterations. In the present analyses, we examine two additional neuroendocrine factors that have been previously implicated in biological stress responses: oxytocin (OT) and arginine vasopressin (AVP). Here we examined basal neuropeptide status in military veterans clinically diagnosed with PTSD (n = 29) and in two non-traumatized comparison groups with previous stress exposure (n = 11 SWAT trainees and n = 21 ultramarathon runners). PTSD patients showed low levels of plasma OT and high levels of AVP. The ratio of AVP/OT robustly related to PTSD status, and emerged as a statistically plausible mediator of relationships between the number of personal traumatic experiences and subsequent PTSD symptom burden. Over the course of behavioral therapy for PTSD, measures of OT showed a significant but modest normalization. Plasma cortisol levels were not statistically different among the three groups. This study suggests that AVP/OT ratios may represent a neuroendocrine predictor of severe PTSD, as well as a potential treatment response biomarker.

Differences in predictive factors for post-traumatic stress disorder encompassing partial PTSD and full PTSD: a cross-sectional study among individuals exposed to the November 13, 2015 Paris attacks.

When faced with a surge of physically injured individuals, especially following a traumatic event like an attack, frontline practitioners prioritize early triage. Detecting potential psychological injuries soon after such events remains challenging. Some individuals might develop post-traumatic stress disorder (PTSD) according to DSM-V criteria. Others may exhibit PTSD symptoms without meeting full diagnostic criteria, termed partial or sub-syndromal PTSD, a less-explored area in literature. This study aims to identify predictive factors for both full and partial PTSD. In a cohort of victims of the 2015 Paris attacks, multinomial logistic regressions explored predictive factors for partial or full PTSD status 8 to 18 months post-attacks. Analyses considered pre, peri, and posttraumatic factors chosen from literature review and univariate analysis within each group. Within the cohort, 50 individuals showed no signs of PTSD, 35 experienced partial PTSD, and 30 presented with full PTSD. After logistic regression, risk factors associated with full PTSD included a history of trauma (OR = 1.30, CI [1.02-1.66], p < 0.05), the intensity of peri-traumatic physical reactions (OR = 1.22, CI [1.09-1.36], p < 0.001), the difficulties in suppressing intrusive thoughts (OR = 1.11, CI [1.02-1.21], p < 0.013). Only the intensity of peri-traumatic physical reactions emerged as a risk factor for partial PTSD (OR = 1.13, [CI 1.02-1.24], p < 0.001). This study revealed that a history of trauma, the intensity of peri-traumatic physical reactions (e.g., tachycardia, trembling, flushes, numbness.), and the difficulties in suppressing intrusive thoughts constitute risk factors for the development of full PTSD. Moreover, the study identified that only the intensity of peri-traumatic physical reactions emerged as a risk factor for partial PTSD. These findings seem to underscore the significance of peri-traumatic experiences in influencing the development of post-traumatic stress symptoms. This study emphasizes the significance of examining peri-traumatic reactions in PTSD development, suggesting its potential as a straightforward screening tool for post-traumatic stress disorder. It also underscores the influence of prior traumatic experiences, before de novo traumatization, in shaping vulnerability to PTSD and illuminates the crucial role of compromised control of intrusive thoughts that could perpetuate PTSD.

Abstract P221: Association of Posttraumatic Stress Disorder With Physical Activity Among Vietnam-Era Male Twin Veterans

Introduction: Post-traumatic stress disorder (PTSD) can develop after a traumatic event and is associated with cardiovascular diseases (CVDs), but the mechanisms are not clear. Behavioral factors like physical activity (PA) may play a role if associated with PTSD, but few studies have examined whether PTSD may be associated with lower PA. By studying twins, we can examine this relationship and adjust for demographic and shared familial characteristics. Methods: We studied the relationship between current PTSD diagnosis and PA in 146 male twins (73 pairs) from the Emory Twin Study within the Vietnam Twin Registry. Twin pairs were discordant for PTSD symptoms. PA was continuously measured over 7 days using wrist actigraphy and used validated algorithms to calculate daily hours of sedentary time and moderate-to-vigorous PA (MVPA). We also examined self-reported leisure PA score with the Baecke questionnaire. We controlled for familial effect using generalized linear regression within PTSD discordant twin pairs. We dichotomized MVPA based on established cutpoints for normal values and estimated the prevalence ratio (PR) of the likelihood of achieving the minimum recommended average daily MVPA using Poisson regression. Multiple imputation was used to reduce the impact of missing data. Results: Veterans (mean (SD) age: 68.2 (2.1); 97% (142/146) White) had a low prevalence of achieving daily MVPA goals —35% among those with PTSD and 25% among those without and spent over 9 average sedentary hours per day. We did not find any significant relationship between current PTSD diagnosis and any of the PA outcomes in fully adjusted models. Discussion: Our findings reveal low PA and high levels of sedentary behavior among Veterans, with PTSD showing no significant impact on average PA. This suggests that PA is unlikely to explain excess CVD risks that have otherwise been observed in PTSD. Nonetheless, in this cohort of Vietnam era veterans, interventions to increase PA are warranted regardless of PTSD status.

Abstract WP35: Elevated Risk of 1-month Post-Traumatic Stress Disorder Among Stroke Mimics Relative to Patients With Stroke

Introduction: A life-threatening medical event such as stroke can trigger symptoms of post-traumatic stress disorder (PTSD). Less is known about the risk of PTSD among individuals who present with stroke-like symptoms but are ultimately diagnosed with a stroke mimic. Aim: To examine the association between final diagnosis of stroke mimic, stroke, or TIA and risk of developing PTSD 1 month after the index event. Methods: We enrolled patients with suspected stroke or TIA from an urban academic medical center. The PTSD Checklist 5 for DSM-5 (PCL-5) was administered at enrollment to assess pre-existing PTSD, and at 1-month after discharge to assess PTSD related to the index event. The index event was adjudicated via chart review as a stroke, TIA, stroke mimic, or equivocal by a neurologist blinded to PTSD status. Logistic regression was used to determine odds of developing clinically significant PTSD (PCL-5 &amp;ge 33) for stroke mimics compared to stroke or TIA at 1 month after adjusting for age, gender, ethnicity, initial NIH Stroke Scale, discharge modified Rankin Score, and prior PTSD. Multiple imputation was used to account for missingness in data. Equivocal cases were excluded. Results: In our sample of suspected stroke ( n = 1,000, 51% female, age = 62 ± 15 y), 596 (59.6%) had a stroke, 79 (7.9%) had a TIA, 274 (27.4%) had a stroke mimic, and 51 (5.1%) were equivocal or missing. PTSD prevalence numbers (rates) at 1 month for stroke mimic, stroke, and TIA, respectively, were 30 (15.1%), 27 (6.3%), and 3 (5.5%). In the fully adjusted model, the odds of 1-month PTSD were higher for stroke mimics vs. patients with stroke, OR = 2.99, 95% CI [1.45, 6.18], p &amp;lt; .01, but not for stroke mimics vs. TIA, OR = 1.67, p = .45. Pre-existing PTSD was associated with increased odds of 1-month PTSD, OR = 10.32, 95% CI [5.30, 20.10], p &amp;lt; .01. No other covariates were associated with PTSD. Conclusion: Experiencing a stroke mimic compared to a stroke was associated with increased risk of having PTSD 1 month after the event. Clinicians should consider the risk of psychological distress particularly among individuals presenting with sudden stroke-like symptoms diagnosed as stroke mimics.

Association between burnout and post-traumatic stress disorder among frontline nurse during COVID-19 pandemic: Amoderated mediation analysis.

The aim of this study was to investigate the relationship between burnout and post-traumatic stress disorder (PTSD) among frontline nurses who went to assist the epidemic situation in Wuhan, China, during the outbreak in 2020. The study also explored the mediating role of depression and the moderating role of age in the main relationship. The relationship between burnout and PTSD in nurse has rarely been investigated in the context of the COVID-19 pandemic. Understand the relationship between these variables can provide empirical evidence for developing interventions and protocols that improve the health of nurses in future public health emergencies. An online cross-sectional survey of targeted local 327 nurses who went to assist the COVID-19 epidemic situation in Wuhan during the initial outbreak. This study was conducted in August 2020, the burnout scale, the PTSD scale and the depression scale were used to survey participants. The moderated mediation model was used to test research hypotheses. Burnout could affect the PTSD symptoms in nursing staffs and depression could mediate this relationship. Age moderated the relationship between burnout/depression and PTSD, and the effects was strong and significant among younger participants in the relationship between burnout and PTSD. Burnout was identified as a core risk factor of PTSD in nurses. Depression and age played significant roles in the relationship between burnout and PTSD. PTSD, as a symptom that manifests after experiencing a stressful event, should be a key concern among frontline healthcare professionals. This study suggests that PTSD in nurses can be further reduced by reducing burnout. Attention should also be paid to the PTSD status of nurses of different age groups. Patients and the public were not involved in the design and implementation of this study. Frontline nurses completed an online questionnaire for this study.

65 The Impact of PTSD and Mild Cognitive Impairment on Resting State Brain Functional Connectivity in World Trade Center Responders

Objective:Functional connectivity of the default mode network (DMN) during rest has been shown to be different among adults with Mild Cognitive Impairment (MCI) relative to aged-matched individuals without MCI and is predictive of transition to dementia. Post-traumatic stress disorder (PTSD) is also associated with aberrant connectivity of the DMN. Prior work from this group has demonstrated a higher rate of MCI and PTSD among World Trade Center (WTC) responders relative to the general population. The current study sought to investigate the main and interactive effects of MCI and PTSD on DMN functioning. Based on prior work, we hypothesized that MCI, but not PTSD, would predict aberrant connectivity in the DMN.Participants and Methods:99 WTC responders aged 44–65 stratified by MCI status (yes/no) and PTSD status (yes/no) and matched for age in years, sex (male vs. female), race (white, black, and other), and educational attainment (high school or less, some college / technical school, and university degree), and occupation on September 11, 2001 (law enforcement vs. other) underwent fMRI using a 3T Siemens Biograph MR scanner. A single 10-minute continuous functional MR sequence was acquired while participants were at rest with their eyes open. Group-level analyses were conducted using SPM-12, with correction for multiple comparisons using AFNI's 3dClustSim. Based on this threshold, the number of comparisons in our imaging volume, and the smoothness of our imaging data as measured by 3dFWHMx-acf, a minimum cluster size of 1134 voxels was required to have a corrected p . .05 with 2-sided thresholding. Spherical 3 mm seeds were placed in the dorsal (4, -50, 26) and ventral (4, -60, 46) posterior cingulate cortex (PCC).Results:Individuals with PTSD demonstrated significantly less connectivity of the dorsal posterior cingulate cortex (PCC) with medial insula (T = 5.21), subthalamic nucleus (T = 4.66), and postcentral gyrus (T = 3.81). There was no difference found in this study for connectivity between groups stratified by MCI status. There were no significant results for the ventral PCC seed.Conclusions:Contrary to hypotheses that were driven by a study of cortical thickness in WTC responders, the impact of PTSD appears to outweigh the impact of MCI on dorsal DMN connectivity among WTC responders stratified by PTSD and MCI status. This study is limited by several issues, including low number of female and minority participants, relatively small group cell sizes (n = 23–27 per cell), a brief resting state sequence (10 minutes), and lack of a non-WTC control group. Importantly, responders are a unique population so generalizability to other populations may be limited. Individuals in the current study are now being followed longitudinally to relate baseline resting state functional connectivity with cognitive changes and changes in connectivity over a four-year period.

Quality of Life Among Chinese Child Survivors of Heart Failure After Discharge From Pediatric Intensive Care Unit

This study investigated the current quality of life (QOL) status and related influencing factors in children with heart failure in the pediatric intensive care unit (PICU). One hundred eighty-three children admitted to the PICU with heart failure were consecutively sampled. They were assessed 3 months after discharge and compared with a control group of 160 healthy individuals. The Pediatric Quality of Life Inventory (version 4.0) and Children's Revised Impact of Event Scale were completed, and factors influencing QOL were analyzed. Three months after discharge, the PICU group reported lower average scores on the overall QOL and the physical and emotional functioning scales than the control group. In particular, posttraumatic stress disorder status, age, and caregiver educational level greatly influenced the PICU children's QOL. More interventions and attention are needed to improve the QOL for PICU heart failure patients after discharge.

Parent-reported posttraumatic stress reactions in children and adolescents: Findings from the mental health of parents and children in Ukraine study.

Despite the long-standing ongoing war in Ukraine, information regarding war-related negative mental health outcomes in children is limited. A nationwide sample of parents in Ukraine was surveyed to assess posttraumatic stress disorder (PTSD) symptoms in their children and to identify risk factors associated with child PTSD status. A nationwide opportunistic sample of 1,238 parents reported on a single randomly chosen child within their household as part of The Mental Health of Parents and Children in Ukraine Study. Data were collected approximately 6 months after the war escalation in February 2022. The prevalence of PTSD was estimated using the parent-reported Child and Adolescent Trauma Screen (CATS). Based on parental reports, 17.5% of preschoolers and 12.6% of school-age children met Diagnostic and Statistical Manual of Mental Disorders (5th ed.) criteria for PTSD. Delay in milestone development (AOR = 2.38, 95% confidence interval [CI] [1.38-4.08]), having a parent affiliated with the emergency services or army (AOR = 2.13, [1.28-3.53]), parental PTSD/complex PTSD status (AOR = 1.88, [1.22-2.89]), and mean changes in parental anxiety (AOR = 1.98, [1.44-2.72]) were among the strongest predictors of increased risk of pediatric PTSD. Russia's war escalation in Ukraine resulted in an increased estimated prevalence of war-related PTSD in children of various ages. Urgent efforts to increase the capacity of national pediatric mental health services are critically needed to mitigate these challenges in an environment of limited financial and human resources. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Post-traumatic stress disorder and risk of first-time and repeated opioid-related hospitalizations among World Trade Center Health Registry enrollees

In 2021, and average of 220 deaths from opioid-related overdoses occurred daily in the US. Recent evidence suggests there is an association between post-traumatic stress disorder (PTSD) and increased opioid misuse, while little is known about opioid-related hospitalizations. This study used data from the World Trade Center Health Registry (WTCHR), a longitudinal cohort consisting of individuals directly exposed to the September 11th terrorist attacks with a high prevalence of resulting PTSD (3.8–29.6%). We linked WTCHR data to New York State hospitalization data to examine the question: do opioid-related hospitalizations (first time and repeated) differ by PTSD status. In a study sample of 37,968 adults, 145 experienced at least one episode of opioid-related hospitalization and 64 had repeated episodes during the study period. We found that in the 13-years post-9/11, individuals with PTSD had a significantly higher risk of a first-time opioid-related hospitalization (Hazard Ratio: 3.6, 95% CI: 2.7, 5.0) and repeated opioid-related hospitalizations (Hazard Ratio: 3.9, 95% CI: 2.7, 5.8) than those who did not have PTSD. Improved treatment of and increased screenings for PTSD may reduce the likelihood of opioid misuse in this population and consequently overdoses, hospitalizations, and healthcare costs.

Post-traumatic stress disorder symptom remission and cognition in a large cohort of civilian women.

Post-traumatic stress disorder (PTSD) is associated with cognitive impairments. It is unclear whether problems persist after PTSD symptoms remit. Data came from 12 270 trauma-exposed women in the Nurses' Health Study II. Trauma and PTSD symptoms were assessed using validated scales to determine PTSD status as of 2008 (trauma/no PTSD, remitted PTSD, unresolved PTSD) and symptom severity (lifetime and past-month). Starting in 2014, cognitive function was assessed using the Cogstate Brief Battery every 6 or 12 months for up to 24 months. PTSD associations with baseline cognition and longitudinal cognitive changes were estimated by covariate-adjusted linear regression and linear mixed-effects models, respectively. Compared to women with trauma/no PTSD, women with remitted PTSD symptoms had a similar cognitive function at baseline, while women with unresolved PTSD symptoms had worse psychomotor speed/attention and learning/working memory. In women with unresolved PTSD symptoms, past-month PTSD symptom severity was inversely associated with baseline cognition. Over follow-up, both women with remitted and unresolved PTSD symptoms in 2008, especially those with high levels of symptoms, had a faster decline in learning/working memory than women with trauma/no PTSD. In women with remitted PTSD symptoms, higher lifetime PTSD symptom severity was associated with a faster decline in learning/working memory. Results were robust to the adjustment for sociodemographic, biobehavioral, and health factors and were partially attenuated when adjusted for depression. Unresolved but not remitted PTSD was associated with worse cognitive function assessed six years later. Accelerated cognitive decline was observed among women with either unresolved or remitted PTSD symptoms.

Perceived Barriers and Benefits of Exercise Among Men with Histories of Sexual Violence: Impact of PTSD and Physical Activity Status.

This study reported on perceived benefits and barriers of exercise among men with histories of sexual violence (SV) and compared these perceptions by activity level and post-traumatic stress disorder (PTSD) status. An online, cross-sectional, survey of men with histories of SV (N = 198) was completed using Amazon Mechanical Turk. Inclusion criteria were identifying sex at birth as male, age between 18 and 65 years, self-reported history of SV, and living in the United States (U.S.). A total of 1,260 men were screened for the study, of which 316 met the inclusion criteria, and 198 met all data quality requirements and were included in the study. Sociodemographic information, exercise behavior, PTSD symptoms, and perceived exercise barriers/benefits were collected. Comparisons by activity and PTSD status were analyzed. Additionally, two open-ended qualitative research questions were included to provide nuance to perceived barriers/benefits of exercise. The most salient benefits included physical performance, psychological outlook, and preventative health. Open-ended responses also noted the mental and physical benefits of exercise. The most salient barrier was physical exercise, with open-ended responses emphasizing lack of time, chronic pain and health concerns, and poor mental health and lack of motivation as impediments to exercise. Significant differences were found in benefits (psychological outlook, physical performance) and barriers (exercise environment, high time expenditure, and family discouragement) between active and insufficiently active men with histories of SV (ps < .05; Cohen's ds = 0.32-0.57). Significant differences were found by PTSD status on benefits (physical performance, social interaction, and preventative health) and barriers (exercise milieu, time expenditure, hard physical exercise, family discouragement) (ps < .05; Cohen's ds = 0.40-1.10). Findings provide new gender-specific strategies for promoting exercise among men with histories of SV: integrating exercise physiologists into trauma recovery programs, psychoeducation, engaging friends and family members, peer-support, and building self-efficacy.

Independent effects of posttraumatic stress disorder diagnosis and metabolic syndrome status on prefrontal cortical thickness and subcortical gray matter volumes.

Posttraumatic stress disorder (PTSD) and metabolic syndrome (MetS) are associated with overlapping brain structural differences. These often involve brain structures involved in the regulation of appetite, food intake, satiety, and reward processing. We examined the individual and interactive effects of PTSD diagnosis and MetS on cortical thickness and subcortical gray matter volumes in patients with PTSD (n = 104) compared to trauma-exposed controls (n = 97). Multivariate models were constructed for FreeSurfer-generated prefrontal cortical thickness and subcortical gray matter regions-of-interest (ROIs) to explore the effects of PTSD diagnosis and MetS as predictors, adjusting for relevant socio-demographic and clinical covariates. Individual prefrontal cortical and subcortical limbic ROIs were also selected based on apriori evidence of their involvement in both PTSD and MetS. The mean age of the sample (n = 201; 78% female) was 41.6 (SD, 13.1) years. PTSD and MetS status showed independent associations with prefrontal cortical thickness and subcortical gray matter volumes across multiple ROIs, adjusting for age, sex, scanner sequence, alcohol, and tobacco use. PTSD and MetS are independently associated with brain structural differences, including thinner prefrontal cortical thickness and smaller subcortical gray matter volumes, across multipleROIs implicated in the hedonic and homeostatic regulation of food intake.

Perceived Barriers and Benefits of Exercise Among Women Survivors of Sexual Violence by Physical Activity Level and Posttraumatic Stress Disorder Status.

An online, cross-sectional survey of women survivors of sexual violence (SV; N = 355) gathered information on perceived barriers and benefits of exercise, along with exercise level and posttraumatic stress disorder (PTSD) symptoms. This study reports exercise perceptions and provides comparisons by exercise level and PTSD status. Differences by exercise level were found in life enhancement, physical performance, psychological outlook, and social interaction (ps < 0.05; rs = -0.04-0.25). Differences were found by PTSD status in physical performance, social interaction, and preventative health and exercise milieu, time expenditure, and family discouragement (ps < 0.05; rs = -0.39-0.21). Findings provide new information relevant for promoting exercise among women survivors of SV.

Attenuated psychotic symptoms, substance use and self-reported PTSD in adolescence

ABSTRACT Background: The occurrence of attenuated psychotic symptoms (APS) is a major concern in populations with substance use disorders (SUDs). However, APS also frequently develop in the course of Post-Traumatic Stress Disorder (PTSD). This study explores how the prevalence of APS differs between adolescent patients with only SUD, SUD with a history of traumatic experiences (TEs), and with SUD and self-reported PTSD. Methods: We recruited n = 120 treatment-seeking adolescents at a German outpatient clinic for adolescents with SUD. All participants filled out questionnaires assessing APS (PQ-16, YSR schizoid scale), trauma history, PTSD symptoms (both UCLA PTSD Index), and SUD severity (DUDIT) next to an extensive substance use interview. We performed a multivariate analysis of co-variance with the four PQ-16 scales and the YSR scale as outcomes and PTSD status as predictor. Additionally, we performed five linear regressions predicting each PQ-16 score and YSR score based on tobacco, alcohol, cannabis, ecstasy, amphetamine, and methamphetamine use. Results: Participants with co-occurring SUD and self-reported PTSD showed significantly higher APS prevalence rates (PQ-16 score, p = .00002), more disturbed thought content (p = .000004), more perceptual disturbances (p = .002), more negative symptoms (p = .004) and more thought problems (p = .001) compared to adolescents with SUD and a history of trauma and adolescents with only SUD. Past-year substance use was not predictive for APS prevalence (F(75) = 0.42; p = .86; R 2 = .04). Conclusion: Our data suggests that the occurrence of APS in adolescents with SUD is better explained by co-occurring self-reported PTSD than by substance use frequency or substance class. This finding might indicate that APS might be reduced through treating PTSD or focusing on TEs in SUD therapy.

Positive emotion in posttraumatic stress disorder: A global or context-specific problem?

Problems with positive emotion are an important component of posttraumatic stress disorder (PTSD), with competing perspectives as to why. The global model suggests that people with PTSD experience a relatively permanent shift in their capacity for positive emotion regardless of context, whereas the context-specific model posits access to the full repertoire of positive emotion that only becomes reduced during exposure to trauma reminders. We tested the global versus context-specific models using ecological momentary assessment (EMA). Trauma-exposed adult community members (N = 80) with (n = 39) and without diagnosed PTSD completed 3 days of EMA (n = 2,158 observations). Participants with PTSD reported lower average momentary levels of positive emotion, B = -0.947, 95% CI [-1.35, -0.54], p < .001, and positive situations, B = -0.607, 95% CI [-1.16, -0.05], p = .032, and more thinking about trauma reminders, B = 0.360, 95% CI [0.21, 0.51], p < .001. There was no between-group difference in positive emotion reactivity (degree of positive emotion derived from positive situations), B = 0.03, 95% CI [-0.09, 0.14], p = .635. Increased thinking about trauma reminders predicted lower momentary levels of positive emotion, B = -0.55, 95% CI [-0.83, -0.26], p < .001, but not reactivity, B = 0.02, 95% CI [-0.35, 0.40], p = .906, irrespective of PTSD status. Findings supported the global model and were inconsistent with the context-specific model. This study helps clarify positive emotional functioning in trauma-exposed adults and highlights future directions to better understand problems with positive emotion in PTSD.

Self-reported gastrointestinal disorders among veterans with gulf war illness with and without posttraumatic stress disorder.

Gulf War Illness (GWI) is a chronic, multi-symptom disorder affecting 25%-32% of Gulf War veterans. Veterans with GWI disproportionately suffer from gastrointestinal (GI) disorders. Given the increasing evidence supporting a gut-brain axis, we explore the relationship between post-traumatic stress disorder (PTSD), GWI, and self-reported GI disorders among GW veterans. Veterans from the Gulf War Era Cohort and Biorepository responded to a mail-based survey (N=1058). They were stratified by GWI (Centers for Disease Control definition) and PTSD status. This yielded three groups: GWI-, GWI+/PTSD-, and GWI+/PTSD+. Multivariable logistic regression adjusting for demographic and military characteristics examined associations between GWI/PTSD groups and GI disorders. Results were expressed as adjusted odds ratios (aOR) with 95% confidence intervals (95% CI). The most frequently reported GI disorders were irritable bowel syndrome (IBS), gastroesophageal reflux disease (GERD), and colon polyps (CP). The GWI+/PTSD+ group had a higher odds of these disorders than the GWI+/PTSD- group (aORIBS =3.12, 95% CI: 1.93-5.05; aORGERD =2.04, 95% CI: 1.44-2.90; aORCP =1.85, 95% CI: 1.23-2.80), which had a higher odds of these disorders than the GWI- group (aORIBS =4.38, 95% CI: 1.55-12.36; aORGERD =2.51 95% CI: 1.63-3.87; aORCP =2.57, 95% CI: 1.53-4.32). GW veterans with GWI and PTSD have significantly higher odds of specific self-reported GI disorders than the other groups. Given the known bidirectional influences of the gut and brain, these veterans may benefit from a holistic healthcare approach that considers biopsychosocial contributors to the assessment and management of disease.

Depression, anxiety, stress, and post-traumatic stress disorder among Iranian nursing caring for COVID-19 patients

COVID-19 has put great physical and psychological pressure on medical staff worldwide, including Iran. As with any other disaster, it is worth paying attention to the risk of developing depression, anxiety, stress, and post-traumatic stress disorder (PTSD) among the healthcare team. This study aimed to determine the severity of depression, anxiety, stress, and PTSD status in healthcare staff involved in treating COVID-19 patients. 400 nurses and clinical assistants in a hospital occupied in treating COVID-19 were included in the study by the incidental sampling. The demographic information questionnaire, DASS-21, and Mississippi PTSD scales were applied to data collection. The mean score of PTSD in about half of the participants is severe. The mean score of re-experience sub-scale is higher than other sub-scales. Depression and stress are significantly higher in those infected with COVID-19. There is a significant difference between various age groups regarding the lack of depression. There is a significant difference in re-experience, alexithymia, and PTSD scores between participants with various marital statuses. Therefore, the existence of depression, stress, and PTSD among medical staff would be a major concern for the health ministry to protect the mental health of society members.

Screening for PTSD and TBI in Veterans using Routine Clinical Laboratory Blood Tests

Post-traumatic stress disorder (PTSD) is a mental disorder diagnosed by clinical interviews, self-report measures and neuropsychological testing. Traumatic brain injury (TBI) can have neuropsychiatric symptoms similar to PTSD. Diagnosing PTSD and TBI is challenging and more so for providers lacking specialized training facing time pressures in primary care and other general medical settings. Diagnosis relies heavily on patient self-report and patients frequently under-report or over-report their symptoms due to stigma or seeking compensation. We aimed to create objective diagnostic screening tests utilizing Clinical Laboratory Improvement Amendments (CLIA) blood tests available in most clinical settings. CLIA blood test results were ascertained in 475 male veterans with and without PTSD and TBI following warzone exposure in Iraq or Afghanistan. Using random forest (RF) methods, four classification models were derived to predict PTSD and TBI status. CLIA features were selected utilizing a stepwise forward variable selection RF procedure. The AUC, accuracy, sensitivity, and specificity were 0.730, 0.706, 0.659, and 0.715, respectively for differentiating PTSD and healthy controls (HC), 0.704, 0.677, 0.671, and 0.681 for TBI vs. HC, 0.739, 0.742, 0.635, and 0.766 for PTSD comorbid with TBI vs HC, and 0.726, 0.723, 0.636, and 0.747 for PTSD vs. TBI. Comorbid alcohol abuse, major depressive disorder, and BMI are not confounders in these RF models. Markers of glucose metabolism and inflammation are among the most significant CLIA features in our models. Routine CLIA blood tests have the potential for discriminating PTSD and TBI cases from healthy controls and from each other. These findings hold promise for the development of accessible and low-cost biomarker tests as screening measures for PTSD and TBI in primary care and specialty settings.

Emotion regulation and combat severity differentiates PTSD diagnostic status among veterans.

This study examined whether posttraumatic stress disorder (PTSD) diagnostic groups in veterans were differentiated by combat severity and specific avoidance and approach-related emotion regulation (ER) strategies. In a cohort study, 725 participants (Mage = 58.39, SD = 11.27, 94.5% male, 58.2% White) recruited from VHA facilities completed the Clinician Administered PTSD Scale (CAPS), Combat Exposure Scale (CES), and Emotion Regulation Questionnaire (ERQ). Participants were categorized into three PTSD groups: Current, Remitted, and Never. Multinomial logistic regressions adjusting for age, sex, and race, showed combat severity significantly differentiated all groups from each other (ps < .001). Specifically, combat severity was significantly associated with increased odds of Current PTSD versus Remitted (OR: 1.02, 95% CI [1.01, 1.05]) and Never PTSD (OR: 1.14, [1.12, 1.17]) and odds of Remitted compared with Never PTSD (OR: 1.11, [1.09, 1.14]). Suppression, but not reappraisal, was significantly associated with increased odds of Current PTSD compared with Remitted (OR: 1.15, [1.06, 1.24]) and Never PTSD (OR: 1.14, [1.06, 1.22]; ps < .001). Lower reappraisal was only significantly associated with the likelihood of Remitted PTSD compared with Never PTSD (OR: 0.93, [0.88, 0.99], p = .03). Increasing levels of combat severity differentiated veterans with current, remitted, and no history of PTSD, suggesting screening for severity of combat may be helpful. Greater habitual suppression distinguished current versus non-current PTSD status, whereas only less reappraisal distinguished non-current groups from each other. Lower suppression may be an important treatment target for veterans with moderate and high combat severity. (PsycInfo Database Record (c) 2023 APA, all rights reserved).