Mississippi Scale for Combat-Related Posttraumatic Stress Disorder: three studies in reliability and validity

Psychological Adaptive Mechanism Maturity Predicts Good Outcomes in Treatment for Refractory PTSD

Background: Post-traumatic Stress Disorder (PTSD) severity follows a bell-shaped curve ranging from mild to severe. Those in the severe range often receive the most intensive treatments, including targeted residential rehabilitation stays. These are expensive and welcome ways to improve their effectiveness. We hypothesized that positive change among subjects treated in a 45-day residential rehabilitation format would be associated with the maturity levels of measurable Psychological Adaptive Mechanisms (PAMs), alternately ego defense mechanisms.

Methods: In this association study, adult male patients (N = 115) with a history of combat related PTSD treated in a residential rehabilitation setting completed the Defense Style Questionnaire (DSQ) on admission, as well as the Post-Traumatic Stress Disorder Checklist-Military Version (PCL-M) and the Mississippi Scale for Combat-Related Post-traumatic Stress Disorder (M-PTSD) on admission and again at discharge. This allowed prospectively calculated change scores on each of the PTSD measures for each patient. The change scores allowed association testing with averaged admission DSQ scores using Pearson's correlation probability with significance held at p < 0.05.

Results: As hypothesized, averaged individual Mature scores on the DSQ were associated with improved change scores on both the PCL-M (p = 0.03) and the M-PTSD (p = 0.04). By contrast neither averaged DSQ Neurotic or Immature scores associated significantly with either PTSD scale change scores.

Conclusion: These results, the first of their kind to our knowledge, suggest that patients presenting with predominantly Mature level PAMs are likely to benefit from residential rehabilitation treatment of PTSD. By contrast, those presenting with Neurotic or Immature PAMs predominantly are less likely to encounter positive change in this type of treatment. Although residential treatment is often reserved for the most refractory PTSD cases, it appears that those endorsing Mature level PAMs will make use of residential treatment whereas other forms of treatment may be better suited to those with Neurotic and Immature adjustment mechanisms.

Combat Experience and Posttraumatic Stress Symptoms among Military-Serving Parents: a Meta-Analytic Examination of Associated Offspring and Family Outcomes

In this meta-analysis, we review findings on the relationships between parental combat exposure and PTSD/PTSS in military-serving families and (1) parenting problems, (2) family maladjustment, and (3) offspring problems. We systematically searched for studies in PsycInfo, PsychArticles, Psychology and Behavior Sciences Collection, Published International Literature on Traumatic Stress (PILOTS), and PubMed/Medline as well as conducted manual searches. Search procedures identified 22 eligible studies, including 20 studies examining relationships between parental PTSD/PTSS and parenting, family, and/or offspring outcomes and 8 studies examining relationships between parental combat exposure and parenting, family, and/or offspring outcomes. Random effects meta-analytic models estimated omnibus associations between parental combat exposure/PTSD and pooled Family Difficulties, as well as individual relationships between parental combat exposure and PTSD/PTSS and parenting, family adjustment, and offspring outcomes. Small-to-moderate effect sizes were observed in the omnibus meta-analysis examining relationships between parental PTSD/PTSS and pooled Family Difficulties, and in the meta-analysis examining relationships between parental PTSD/PTSS and parenting problems, between parental PTSD/PTSS and poor family functioning, and between parental PTSD/PTSS and offspring problems. Associations between parental combat exposure and pooled Family Difficulties, as well as between parental combat exposure and parenting problems were smaller in magnitude. PTSD/PTSS among military-serving parents is associated with increased problems in the family environment, including parenting problems, family maladjustment, and offspring problems, whereas combat exposure alone is not as strongly associated with such family difficulties. Moderator analyses are presented and discussed as well. When military-serving parents show psychological symptoms, professionals should consider allocating resources to target broader family issues.

Prevalence and Correlates of Mental Health Status Among Pre-Hospital Healthcare Staff

Introduction:

Mental stress amongst pre-hospital Emergency Medical Services (EMS) workers is an iceberg phenomenon; owing to unique occupational stressors faced by them. This study was aimed to examine the mental health status of pre-hospital EMS workers and its correlation with Post-Traumatic Stress Disorder (PTSD) and Work Environment Scale (WES).

Methods:

This cross-sectional study incorporated 224 emergency EMS members from urban and road EMS bases in eastern Iran in 2018. General Health Questionnaire (GHQ-28), Post-Traumatic Stress Disorder Checklist-Civilian version (PTSD-C), and Work Environment Scale (WES) were used as research instruments. Data were analyzed via SPSS Statistics software (version 21); while p<0.05 was considered significant.

Results:

The mean age of participants was 31.91±6.9 years; 36(16.1%) had PTSD ≥50, which increased with age (p-0.01), number of offspring (p-0.022) and time working at the EMS (p-0.002). Mean WES scores were 73.41±12.27; with a significant impact of marital status (p-0.007), the number of offspring (p-0.023), qualification (p-0.019) and less time working at the EMS (p-0.008). Mental distress was recorded in 89(39.7%) individuals. Multivariate logistic regression revealed that members at higher risk of mental distress were; those with associate’s degree (adjusted OR 3.192; 95% CI, 1.456-6.998), individuals with 1 or 2 offspring (adjusted OR 2.03; 95% CI, 0.992-4.156; adjusted OR 3.380; 95% CI, 1.483-7.704, respectively), and those with PTSD equal or higher than 50 (adjusted OR 2.504; 95% CI, 1.063-5.903), with a reverse impact of WES (p>0.05).

Conclusion:

PTSD adversely affected mental health and clinical performance of the subjects; while work-place environment augmented working spirit as well as psychological resilience. Strategies aiming at stress-dilution and improvements in a professional environment cannot be over-emphasized.

The Role of Moral Injury in PTSD Among Law Enforcement Officers: A Brief Report

Exposure to critical incidents and hence potentially traumatic events is endemic in law enforcement. The study of law enforcement officers’ experience of moral injury and their exposure to potentially morally injurious incidents, and research on moral injury’s relationship with different forms of traumatization (e.g. compassion fatigue, post-traumatic stress disorder) are in their infancy. The present study aims to build on prior research and explores the role of moral injury in predicting post-traumatic stress disorder (PTSD) and its clusters thereof. To this end, a sample of law enforcement officers (N = 370) from the National Police of Finland was recruited to participate in the current study. Results showed that moral injury significantly predicted PTSD as well as its diagnostic clusters (i.e., avoidance, hyperarousal, re-experiencing). The aforementioned role of moral injury to significantly predict PTSD and its clusters were unequivocal even when compassion fatigue was incorporated into the path model. Clinical, research, and law enforcement practice implications are discussed.

Assessing Voice Hearing in Trauma Spectrum Disorders: A Comparison of Two Measures and a Review of the Literature

Voice hearing (VH) can occur in trauma spectrum disorders (TSD) such as posttraumatic stress disorder (PTSD) and dissociative disorders. However, previous estimates of VH among individuals with TSD vary widely. In this study, we sought to better characterize the rate and phenomenology of VH in a sample of 70 women with TSD related to childhood abuse who were receiving care in a specialized trauma program. We compared the rate of VH within our sample using two different measures: 1) the auditory hallucination (AH) item in the Structured Clinical Interview for DSM-IV-TR (SCID), and 2) the thirteen questions involving VH in the Multidimensional Inventory of Dissociation (MID), a self-report questionnaire that comprehensively assesses pathological dissociation. We found that 45.7% of our sample met threshold for SCID AH, while 91.4% met criteria for MID VH. Receiver operating characteristics (ROC) analyses showed that while SCID AH and MID VH items have greater than chance agreement, the strength of agreement is only moderate, suggesting that SCID and MID VH items measure related but not identical constructs. Thirty-two patients met criteria for both SCID AH and at least one MID VH item ("unequivocal VH"), 32 for at least one MID VH item but not SCID AH ("ambiguous VH"), and 6 met criteria for neither ("unequivocal non-VH"). Relative to the ambiguous VH group, the unequivocal VH group had higher dissociation scores for child voices, and higher mean frequencies for child voices and Schneiderian voices. Our findings suggest that VH in women with TSD related to childhood abuse is common, but that the rate of VH depends on how the question is asked. We review prior studies examining AH and/or VH in TSD, focusing on the measures used to ascertain these experiences, and conclude that our two estimates are consistent with previous studies that used comparable instruments and patient samples. Our results add to growing evidence that VH-an experience typically considered psychotic or psychotic-like-is not equivalent to having a psychotic disorder. Instruments that assess VH apart from psychotic disorders and that capture their multidimensional nature may improve identification of VH, especially among patients with non-psychotic disorders.

The Severity of Post-abortion Stress in Spontaneous, Induced and Forensic Medical Center Permitted Abortion in Shiraz, Iran, in 2018

Background:

Abortion and loss of pregnancy in the first trimester may affect maternal mortality and morbidity. This study aimed to determine the severity of post-abortion stress in spontaneous abortion, induced abortion, and Forensic Medical Center (FMC) referral abortions immediately after abortion and after 1 month of follow-up in Shiraz, Iran, in 2018.

Materials and Methods:

This cross-sectional study was conducted on 104 mothers selected through convenience sampling method in 2018. The data collection tools included a demographic characteristics questionnaire and the Mississippi Post-Traumatic Stress Disorder (M-PTSD) Scale that were filled out by mothers immediately and 1 month after the abortion. Data were analyzed using one-way ANOVA and post-hoc LSD test in SPSS software. Moreover, p < 0.05 was considered as statistically significant.

Results:

The mean (SD) of post-traumatic stress scores was 83.87 (18.35) and 77.40 (9.88) in spontaneous abortion, 82.28 (13.27) and 75.71 (14.73) in FMC permitted abortions, and 86.66 (10.10) and 74.98 (12.99) in induced abortions immediately and 1 month after abortion, respectively. Stress was reduced in the three groups of mothers, after one month of severe value. The score for frequency of stress was 3.10% in FMC-permitted abortions and 5.10% in induced abortions; moreover, no stress was observed in the spontaneous abortion cases.

Conclusions:

Stress was gradually reduced over time. The level of PTSD was lower after 1 month in women who had experienced spontaneous abortion. Given that 1 month after abortion, women are still often moderately stressed, follow-up care, and appropriate counseling for these women are necessary.

Association between alexithymia and impaired reward valuation in patients with fronto-insular damage

Humans compute the anticipated reward value of stimuli in their environment in order to behave in an adaptive, goal-directed manner. This reward valuation ability is vital, and its disruption in a range of clinical populations has profound personal and social consequences. However, research has often failed to consider the reward-related functions of a central component of human emotion: conscious emotional experience. Alexithymia-a condition characterized by diminished conscious awareness of one's emotions-offers a unique opportunity to examine the link between emotional awareness and reward valuation. In the present study, we measured both acquired alexithymia and reward valuation ability in a large sample of patients with traumatic brain injuries (N = 112). Behavioral analyses provided evidence for a negative association between alexithymia and reward valuation ability. This association remained significant after controlling for several covariates in the model (anxiety, depression, posttraumatic stress disorder, and IQ). Voxel-based lesion-symptom mapping was carried out to identify brain regions-of-interest (ROIs) that, when damaged, lead to increased alexithymia and impaired reward valuation. Importantly, mediation models computed using the ROIs identified through the voxel-based lesion-symptom mapping revealed a specific indirect effect of left frontoinsular damage on impaired valuation that was mediated by increased levels of alexithymia. This indirect effect was not observed for any of the other candidate ROIs. The present study identifies a network of brain regions likely to be involved in the integration of subjective feelings and reward processes critical for the adaptive control of goal-directed behavior. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Brief interventions for young adults who use drugs: The moderating effects of resilience and trauma

Among participants in an intervention clinical trial (N = 602), we examined resilience as a moderator of substance use outcomes by intervention condition and between participants with and without severe traumatic stress (STS). Eligibility included men and women ages 18-39 with recent multidrug use; drug treatment enrollees were excluded. Outcome measures were past 90-day frequencies of substance use and abstinence. Putative moderators were measured using the Resilience Research Centre's Adult Resilience Measure (RRC-ARM) and the Traumatic Stress Scale from the Global Appraisal of Individual Needs (GAIN). Analyses employed hierarchical linear models. High resilience predicted better substance use outcomes, and the ordering of intervention effects for high resilience participants was stepwise by intervention condition intensity. Participants with low resilience scores had poorer outcomes, and those outcomes were largely unaffected by intervention condition. Participants without STS experienced the interventions similarly to the overall sample. Regardless of the level of resilience, however, participants with STS did not benefit from the interventions. The findings point to the importance of screening for both resilience and traumatic stress prior to intervention to maximize the impact of brief interventions for substance users, and also to link those needing more intensive approaches to additional services and professional care.

Intergenerational consequences of the Holocaust on offspring mental health: a systematic review of associated factors and mechanisms

Exposure to war and violence has major consequences for society at large, detrimental impact on people's individual lives, and may also have intergenerational consequences. To gain more insight into these intergenerational consequences, research addressing the impact of the Holocaust on offspring is an important source of information. The aim of the current study was to systematically review the mechanisms of intergenerational consequences by summarizing characteristics in Holocaust survivors and their offspring suggested to impact the offspring's mental health. We focused on: 1) parental mental health problems, 2) (perceived) parenting and attachment quality, 3) family structure, especially parental Holocaust history, 4) additional stress and life events, and 5) psychophysiological processes of transmission. We identified 23 eligible studies published between 2000 and 2018. Only Holocaust survivor studies met the inclusion criteria. Various parent and child characteristics and their interaction were found to contribute to the development of psychological symptoms and biological and epigenetic variations. Parental mental health problems, perceived parenting, attachment quality, and parental gender appeared to be influential for the mental well-being of their offspring. In addition, having two survivor parents resulted in higher mental health problems compared to having one survivor parent. Also, there was evidence suggesting that Holocaust survivor offspring show a heightened vulnerability for stress, although this was only evident in the face of actual danger. Finally, the results also indicate intergenerational effects on offspring cortisol levels. Clinical and treatment implications are discussed.

Assessment of Moral Injury in Veterans and Active Duty Military Personnel With PTSD: A Review

Background: Moral injury (MI) involves distress over having transgressed or violated core moral boundaries, accompanied by feelings of guilt, shame, self-condemnation, loss of trust, loss of meaning, and spiritual struggles. MI is often found in Veterans and Active Duty Military personnel with posttraumatic stress disorder (PTSD). MI is widespread among those with PTSD symptoms, adversely affects mental health, and may increase risk of suicide; however, MI is often ignored and neglected by mental health professionals who focus their attention on PTSD only. Methods: A review of the literature between 1980 and 2018 conducted in 2018 is presented here to identify scales used to assess MI. Databases used in this review were PsychInfo, PubMed (Medline), and Google Scholar. Search terms were "moral injury," "measuring," "screening," "Veterans," and "Active Duty Military." Inclusion criteria were quantitative measurement of MI and health outcomes, Veteran or Active Duty Military status, and peer-review publication. Excluded were literature reviews, dissertations, book chapters, case reports, and qualitative studies. Results: Of the 730 studies identified, most did not meet eligibility criteria, leaving 118 full text articles that were reviewed, of which 42 did not meet eligibility criteria. Of the remaining 76 studies, 34 were duplicates leaving 42 studies, most published in 2013 or later. Of 22 studies that assessed MI, five used scales assessing multiple dimensions, and 17 assessed only one or two aspects (e.g., guilt, shame, or forgiveness). The remaining 20 studies used one of the scales reported in the first 22. Of the five scales assessing multiple dimensions of MI, two assess both morally injurious events and symptoms and the remaining three assess symptoms only. All studies were cross-sectional, except three that tested interventions. Conclusions: MI in the military setting is widespread and associated with PTSD symptom severity, anxiety, depression, and risk of suicide in current or former military personnel. Numerous measures exist to assess various dimensions of MI, including five multidimensional scales, although future research is needed to identify cutoff scores and clinically significant change scores. Three multidimensional measures assess MI symptoms alone (not events) and may be useful for determining if treatments directed at MI may both reduce symptoms and impact other mental health outcomes including PTSD.

Association Between Traumatic Brain Injury-Related Brain Lesions and Long-term Caregiver Burden

OBJECTIVE

To investigate the association between traumatic brain injury (TBI)-related brain lesions and long-term caregiver burden in relation to dysexecutive syndrome.

SETTING

National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland.

PARTICIPANTS

A total of 256 participants: 105 combat veterans with TBI, 23 healthy control combat veterans (HCv), and 128 caregivers.

OUTCOME MEASURE

Caregiver burden assessed by the Zarit Burden Interview at 40 years postinjury.

DESIGN

Participants with penetrating TBI were compared with HCv on perceived caregiver burden and neuropsychological assessment measures. Data of computed tomographic scans (overlay lesion maps of participants with a penetrating TBI whose caregivers have a significantly high burden) and behavioral statistical analyses were combined to identify brain lesions associated with caregiver burden.

RESULTS

Burden was greater in caregivers of veterans with TBI than in caregivers of HCv. Caregivers of participants with lesions affecting cognitive and behavioral indicators of dysexecutive syndrome (ie, left dorsolateral prefrontal cortex and dorsal anterior cingulate cortex) showed greater long-term burden than caregivers of participants with lesions elsewhere in the brain.

CONCLUSION AND IMPLICATION

The TBI-related brain lesions have a lasting effect on long-term caregiver burden due to cognitive and behavioral factors associated with dysexecutive syndrome.

Updates and Current Perspectives of Psychiatric Assessments after Traumatic Brain Injury: A Systematic Review

Neuropsychological and psychiatric disorders represent a major concern and cause of disabilities after the trauma, contributing to worse recovery after traumatic brain injury (TBI). However, the lack of well-defined parameters to evaluate patient's psychiatric disorders leads to a wide range of diagnoses and symptoms. The aim of this study was to perform a review of literature in order to gather data of the most common scales and inventories used to assess and diagnose depression, anxiety, and posttraumatic stress disorder (PTSD) after TBI. We conducted a literature search via MEDLINE, PubMed, and Web of Science. We included reviews, systematic reviews, and meta-analysis studies, and we used the following keywords: "traumatic brain injury OR TBI," "depression OR depressive disorder," "anxiety," and "posttraumatic stress disorder OR PTSD." From 610 titles, a total of 68 systematic reviews or meta-analysis were included in the section "Results" of this review: depression (n = 32), anxiety (n = 9), and PTSD (n = 27). Depression after TBI is a more established condition, with more homogeneous studies. Anxiety and PTSD disorders have been studied in a heterogeneous way, usually as comorbidity with other psychiatric disorders. Some scales and inventories designed for the general community may not be appropriate for patients with TBI.

Reliability and Validity of the Korean Version of the Symptom Checklist-Post-Traumatic Stress Disorder Scale

The Symptom Checklist - Post-Traumatic Stress Disorder Scale (SCL-PTSD), also known as Crime-Related PTSD Scale has been validated in survivors of interpersonal trauma in the general population. However, the psychometric properties have not been investigated in a clinical setting for patients with PTSD from diverse traumatic events. This study investigates the reliability and validity of the Korean version of the SCL-PTSD among 104 psychiatric outpatients with PTSD, caused by interpersonal (n = 50) or non-interpersonal trauma (n = 54). Self-report data of the SCL-PTSD, Beck Depression Inventory (BDI), State-Trait Anxiety Inventory (STAI), and Impact of Events Scale-Revised (IES-R) were gathered. The Korean version of the SCL-PTSD showed excellent internal consistency and moderate-to-good four-week temporal stability in both the interpersonal and non-interpersonal trauma groups. In comparison with other diagnostic groups, the scores of the SCL-PTSD were significantly higher compared to those of adjustment disorder, depression, other anxiety disorders, and schizophrenia, demonstrating its criteria-related validity. Convergent validity was confirmed because the scores of the SCL-PTSD were significantly correlated with BDI, SAI and TAI scores. Concurrent validity was demonstrated by significant correlation with the IES-R score. This study demonstrated the favorable psychometric prosperities of the Korean version of the SCL-PTSD, supporting its use in clinical research and practice.

Measuring workplace trauma response in Australian paramedics: an investigation into the psychometric properties of the Impact of Event Scale

Introduction

Investigation into the psychological effects of violence toward health care workers and its associated trauma is increasing. The Impact of Event Scale (IES) provides a measure of current, subjective, emotional distress symptomatic of a specific traumatic event. However, its validity among paramedics is largely unknown.

Problem

The purpose of this study was to investigate the psychometric properties and factor structure of the IES with a sample of Australian paramedics.

Methods

The study aimed to investigate the psychometric properties and factor structure of the 15-item IES with a sample of Australian paramedics using Exploratory Factor Analysis with model fit statistics as found in confirmatory analysis.

Results

Maximum Likelihood Factor Analysis with Varimax rotation supported the hypothesis that a two-factor solution would provide the best fit of the data. Procrustes rotation provided further support for this hypothesis indicating that the factors, labeled “Intrusion” and “Avoidance”, as well as the individual items of the 12-item final model, were a good fit to an ideal solution.

Conclusion

The revision of the scale has improved its validity for use in the general population of paramedics, improving the potential for its use in trauma-related research.

Assessing post-traumatic stress symptoms in a Latino prison population

PURPOSE

The purpose of this paper is to assess the reliability and validity of the Spanish version of the Davidson trauma scale (DTS-S) and to determine the prevalence and correlates of post-traumatic stress disorder (PTSD) symptoms in a non-clinical random sample of prison inmates.

DESIGN/METHODOLOGY/APPROACH

Probabilistic samples of 1,179 inmates from 26 penal institutions in Puerto Rico were selected using a multistage sampling design. Population estimates and correlations were obtained for PTSD, generalized anxiety and depression. The reliability, factor structure, and convergent validity of the DTS-S were assessed. Cross-validation was employed to confirm the results of the factor analyses.

FINDINGS

Using the cut-offs adopted by the scale's author, 136 (13.4 percent) of the inmates are likely to have current PTSD and 117 (11.6 percent) reach the cut-off for sub-threshold PTSD. Confirmatory factor analysis generated two factors explaining 53 percent of the variance. High reliabilities were obtained for the total scale (α=0.95) and for the frequency and severity scales (α=0.90 and 0.91). Significantly higher DTS-S scores were found for females (t=2.26, p<0.025), for inmates diagnosed with depression or anxiety (t=2.02, p<0.05), and those reporting suicide attempts (t=4.47, p<0.0001).

ORIGINALITY/VALUE

Findings support that the DTS-S is a reliable and valid measure to assess PTSD symptoms in Latino inmate populations and to identify individuals at risk for the disorder that require confirmatory diagnosis and clinical interventions.

Association between long-term cognitive decline in Vietnam veterans with TBI and caregiver attachment style

OBJECTIVE

To examine whether a caregiver's attachment style is associated with patient cognitive trajectory after traumatic brain injury (TBI).

SETTING

National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland.

PARTICIPANTS

Forty Vietnam War veterans with TBI and their caregivers.

MAIN OUTCOME MEASURE

Cognitive performance, measured by the Armed Forces Qualification Test percentile score, completed at 2 time points: preinjury and 40 years postinjury.

DESIGN

On the basis of caregivers' attachment style (secure, fearful, preoccupied, dismissing), participants with TBI were grouped into a high or low group. To examine the association between cognitive trajectory of participants with TBI and caregivers' attachment style, we ran four 2 × 2 analysis of covariance on cognitive performances.

RESULTS

After controlling for other factors, cognitive decline was more pronounced in participants with TBI with a high fearful caregiver than among those with a low fearful caregiver. Other attachment styles were not associated with decline.

CONCLUSION AND IMPLICATION

Caregiver fearful attachment style is associated with a significant decline in cognitive status after TBI. We interpret this result in the context of the neural plasticity and cognitive reserve literatures. Finally, we discuss its impact on patient demand for healthcare services and potential interventions.

A Life-span Perspective on Combat Exposure and PTSD Symptoms in Later Life: Findings From the VA Normative Aging Study

PURPOSE OF THE STUDY

We tested a life-span model of combat exposure on posttraumatic stress disorder (PTSD) symptoms in later life, examining the direct and indirect effects of prewar, warzone, and postwar factors.

DESIGN AND METHODS

The sample included 947 male World War II and Korean War veterans from the VA Normative Aging Study (Mage = 65, SD = 7). They completed mail surveys on childhood family environment, military service and postwar experience, stressful life events, and PTSD symptoms (response rates > 80%).

RESULTS

We constructed an initial path model testing cumulative advantage and disadvantage pathways. Although all hypothesized relationships were significant, the model was not a good fit to the data. Subsequent models showed that all three life-span periods had both direct and indirect effects on PTSD symptoms and that there were interesting cross-links between the two sets of pathways.

IMPLICATIONS

The life-span perspective provides a useful heuristic to model various developmental effects on later-life outcomes. A supportive childhood family environment can have lifelong protective effects, whereas a conflictual one can set up lifelong patterns of pessimistic appraisals.

Correlates of improvement in substance abuse among dually diagnosed veterans with post-traumatic stress disorder in specialized intensive VA treatment

Substantial rates of substance use comorbidity have been observed among veterans with Post-Traumatic Stress Disorder (PTSD), highlighting the need to identify patient and program characteristics associated with improved outcomes for substance abuse. Data were drawn from 12,270 dually diagnosed veterans who sought treatment from specialized intensive Veterans Health Administration PTSD programs between 1993 and 2011. The magnitude of the improvement in Addiction Severity Index (ASI) alcohol and drug use composite scores from baseline was moderate, with effect sizes (ES) of -.269 and -.287, respectively. Multivariate analyses revealed that treatment in longer-term programs, being prescribed psychiatric medication, and planned participation in reunions were all associated with slightly improved outcomes. Reductions in substance use measures were associated with robust improvements in PTSD symptoms and violent behavior. These findings suggest not only synergistic treatment effects linking improvement in PTSD symptoms with substance use disorders among dually diagnosed veterans with PTSD, but also to reductions in violent behavior. Furthermore, the findings indicate that proper discharge planning in addition to intensity and duration of treatment for dually diagnosed veterans with severe PTSD may result in better outcomes. Further dissemination of evidence-based substance abuse treatment may benefit this population.

Comorbidities with Posttraumatic Stress Disorder (PTSD) among combat veterans: 15 years postwar analysis

The aim of this study was to investigate the differences in the prevalence of somatic diseases among combat veterans and their contemporaries who were not exposed to the traumatic experience at the battlefield, and to determine whether socio-demographic factors, exposure to war-time trauma and/or injury might predict individual somatic diseases. The study included 1,558 subjects living in south Croatia: 501 male combat veterans with Posttraumatic Stress Disorder (PTSD) and the corresponding control group of 825 men who were not exposed to combat experience. Veterans with PTSD, regardless of the length of time spent in war, suffered more often from cardiovascular, dermatological, musculoskeletal, pulmonary and metabolic diseases than corresponding control subjects who were not exposed to combat experience. The predictors of cardiovascular, musculoskeletal and malignant diseases in veterans were age, length of time spent in combat, having been wounded. A longer period in the combat zone was associated with arrhythmias in veterans with PTSD complicated with other psychiatric comorbidities. PTSD as a result of exposure to war trauma increases the possibility of developing somatic diseases.

Developing the PTSD Checklist-I/F for the DSM-IV (PCL-I/F): Assessing PTSD Symptom Frequency and Intensity in a Pilot Study of Male Veterans with Combat-Related PTSD

The widely used posttraumatic stress disorder (PTSD) Checklist (PCL) has established reliability and validity, but it does not differentiate posttraumatic symptom frequency from intensity as elements of posttraumatic symptom severity. Thus, the PCL in its existing form may not provide a comprehensive appraisal of posttraumatic symptomatology. Because of this, we modified the PCL to create the PCL-I/F that measures both frequency and intensity of PTSD symptoms via brief self-report. To establish validity and internal consistency of the PCL-I/F, we conducted a pilot study comparing PCL-I/F scores to structured diagnostic interview for PTSD (the Clinician Administered PTSD Scale [CAPS]) in a male combat veteran sample of 92 participants. Statistically significant correlations between the PCL-I/F and the CAPS were found, suggesting initial validation of the PCL-I/F to screen and assess frequency and intensity of combat-related PTSD symptoms. Implications are discussed for screening and assessment of PTSD related to combat and non-combat trauma.

Free, brief, and validated: Standardized instruments for low-resource mental health settings

Evidence-based assessment has received little attention despite its critical importance to the evidence-based practice movement. Given the limited resources in the public sector, it is necessary for evidence-based assessment to utilize tools with established reliability and validity metrics that are free, easily accessible, and brief. We review tools that meet these criteria for youth and adult mental health for the most prevalent mental health disorders to provide a clinical guide and reference for the selection of assessment tools for public sector settings. We also discuss recommendations for how to move forward the evidence-based assessment agenda.

Prospective study of police officer spouse/partners: a new pathway to secondary trauma and relationship violence?

INTRODUCTION

It has been reported that posttraumatic stress disorder (PTSD) is associated with secondary spouse/partner (S/P) emotional distress and relationship violence.

OBJECTIVE

To investigate the relationships between PTSD, S/P emotional distress and relationship violence among police recruits using a prospective design.

METHODS

Two hypotheses were tested in 71 S/Ps: (1) Police officer reports of greater PTSD symptoms after 12 months of police service will be associated with greater secondary trauma symptoms among S/Ps; (2) Greater secondary trauma symptoms among S/Ps at 12 months will be associated with S/P reports of greater relationship violence.

METHODS

71 police recruits and their S/Ps were assessed at baseline and 12 months after the start of police officer duty. Using linear and logistic regression, we analyzed explanatory variables for 12 month S/P secondary traumatic stress symptoms and couple violence, including baseline S/P variables and couple violence, as well as exposure and PTSD reports from both S/P and officer.

RESULTS

S/P perception of officer PTSD symptoms predicted S/P secondary traumatic stress. OS/P secondary trauma was significantly associated with both total couple violence (.34, p = .004) and S/P to officer violence (.35, p = .003).

CONCLUSIONS

Although results from this relatively small study of young police officers and their S/Ps must be confirmed by larger studies in general populations, findings suggest that S/P perception of PTSD symptoms may play a key role in the spread of traumatic stress symptoms across intimate partner relationships and intimate partner violence in the context of PTSD.

Post-traumatic stress disorder and incidence of coronary heart disease: a twin study

OBJECTIVES

The aim of this study was to determine whether post-traumatic stress disorder (PTSD) is associated with coronary heart disease (CHD) using a prospective twin study design and objective measures of CHD.

BACKGROUND

It has long been hypothesized that PTSD increases the risk of CHD, but empirical evidence using objective measures is limited.

METHODS

We conducted a prospective study of middle-aged male twins from the Vietnam Era Twin Registry. Among twin pairs without self-reported CHD at baseline, we selected pairs discordant for a lifetime history of PTSD, pairs discordant for a lifetime history of major depression, and pairs without either condition. All underwent a clinic visit after a median follow-up of 13 years. Outcomes included clinical events (myocardial infarction, other hospitalizations for CHD and coronary revascularization) and quantitative measures of myocardial perfusion by [(13)N] ammonia positron emission tomography, including a stress total severity score and coronary flow reserve.

RESULTS

A total of 562 twins (281 pairs) with a mean age of 42.6 years at baseline were included in this study. The incidence of CHD was more than double in twins with PTSD (22.6%) than in those without PTSD (8.9%; p < 0.001). The association remained robust after adjusting for lifestyle factors, other risk factors for CHD, and major depression (odds ratio: 2.2; 95% confidence interval: 1.2 to 4.1). Stress total severity score was significantly higher (+95%, p = 0.001) and coronary flow reserve was lower (-0.21, p = 0.02) in twins with PTSD than in those without PTSD, denoting worse myocardial perfusion. Associations were only mildly attenuated in 117 twin pairs discordant for PTSD.

CONCLUSIONS

Among Vietnam-era veterans, PTSD is a risk factor for CHD.

The Connection between Alexithymia and Somatic Morbidity in a Population of Combat Veterans with Chronic PTSD

Purpose

To investigate the connection between alexithymia and somatic illness, or, somatization, in veterans suffering from chronic combat-related post-traumatic stress disorder, PTSD.

Methods

Croatian combat veterans (N=127) were studied at the Department of Psychology, Zagreb Clinical Hospital Center. The diagnosis of PTSD was confirmed and verified according to the International Classification of Diseases (ICD-10). A version of the Mississippi Scale for Combat Related PTSD (M-PTSD) standardized for the Croatian population was used to assess the severity of PTSD. In addition to the clinical interview, the existence of alexithymia was confirmed by the score on the Toronto Alexithymia Scale (TA S-20).

Results

A statistically significant association was found between the total number of diagnosed physical illnesses and the scores on three subscales of an alexithymia questionnaire, the TA S-20, with a 1% risk (p<0.01, 0.487; 0.450; 0.335). Regression analysis confirmed the most statistically significant predictive value of the first item of the TA S-20, which refers to difficulty in identifying feelings (=0.408, p=0.019). The total score on the M-PTSD scale correlated significantly to the subscales for alexithymia. There was a statistically significant negative correlation of the total score on the M-PTSD scale with social support.

Conclusion

The total scores obtained in this study, particularly those related to alexithymia, indicate the importance of this construct in the etiopathogenesis of somatic morbidity in the study population and confirm that as in other countries the TA S-20 is a useful instrument in Croatia for the assessment of this phenomenon.

The relationship between Hippocampal asymmetry and working memory processing in combat-related PTSD - a monozygotic twin study

BACKGROUND

PTSD is associated with reduction in hippocampal volume and abnormalities in hippocampal function. Hippocampal asymmetry has received less attention, but potentially could indicate lateralised differences in vulnerability to trauma. The P300 event-related potential component reflects the immediate processing of significant environmental stimuli and has generators in several brain regions including the hippocampus. P300 amplitude is generally reduced in people with PTSD.

METHODS

Our study examined hippocampal volume asymmetry and the relationship between hippocampal asymmetry and P300 amplitude in male monozygotic twins discordant for Vietnam combat exposure. Lateralised hippocampal volume and P300 data were obtained from 70 male participants, of whom 12 had PTSD. We were able to compare (1) combat veterans with current PTSD; (2) their non-combat-exposed co-twins; (3) combat veterans without current PTSD and (4) their non-combat-exposed co-twins.

RESULTS

There were no significant differences between groups in hippocampal asymmetry. There were no group differences in performance of an auditory oddball target detection task or in P300 amplitude. There was a significant positive correlation between P300 amplitude and the magnitude of hippocampal asymmetry in participants with PTSD.

CONCLUSIONS

These findings suggest that greater hippocampal asymmetry in PTSD is associated with a need to allocate more attentional resources when processing significant environmental stimuli.

Combat posttraumatic stress disorder, substance use disorders, and traumatic brain injury

Among both civilian and veteran populations, substance use disorders (SUDs) and anxiety disorders frequently co-occur. One of the most common comorbid anxiety disorder is posttraumatic stress disorder (PTSD), a condition which may develop after exposure to traumatic events, such as military combat. In comparison with the general population, rates of both SUDs and PTSD are elevated among veterans. Recent data show that soldiers returning from Iraq and Afghanistan demonstrate high rates of co-occurring SUDs, PTSD, and traumatic brain injury. Careful assessment of these conditions is critical and may be complicated by symptom overlap. More research targeting integrated interventions for these conditions is needed to establish optimal treatments.

Event-related potential patterns associated with hyperarousal in Gulf War illness syndrome groups

An exaggerated response to emotional stimuli is one of the several symptoms widely reported by veterans of the 1991 Persian Gulf War. Many have attributed these symptoms to post-war stress; others have attributed the symptoms to deployment-related exposures and associated damage to cholinergic, dopaminergic, and white matter systems. We collected event-related potential (ERP) data from 20 veterans meeting Haley criteria for Gulf War Syndromes 1-3 and from 8 matched Gulf War veteran controls, who were deployed but not symptomatic, while they performed an auditory three-condition oddball task with gunshot and lion roar sounds as the distractor stimuli. Reports of hyperarousal from the ill veterans were significantly greater than those from the control veterans; different ERP profiles emerged to account for their hyperarousability. Syndromes 2 and 3, who have previously shown brainstem abnormalities, show significantly stronger auditory P1 amplitudes, purported to indicate compromised cholinergic inhibitory gating in the reticular activating system. Syndromes 1 and 2, who have previously shown basal ganglia dysfunction, show significantly weaker P3a response to distractor stimuli, purported to indicate dysfunction of the dopaminergic contribution to their ability to inhibit distraction by irrelevant stimuli. All three syndrome groups showed an attenuated P3b to target stimuli, which could be secondary to both cholinergic and dopaminergic contributions or disruption of white matter integrity.

A case-control study examining whether neurological deficits and PTSD in combat veterans are related to episodes of mild TBI

BACKGROUND

Mild traumatic brain injury (mTBI) is a common injury among military personnel serving in Iraq or Afghanistan. The impact of repeated episodes of combat mTBI is unknown.

OBJECTIVE

To evaluate relationships among mTBI, post-traumatic stress disorder (PTSD) and neurological deficits (NDs) in US veterans who served in Iraq or Afghanistan.

METHODS

This was a case-control study. From 2091 veterans screened for traumatic brain injury, the authors studied 126 who sustained mTBI with one or more episodes of loss of consciousness (LOC) in combat. Comparison groups: 21 combat veterans who had definite or possible episodes of mTBI without LOC and 21 veterans who sustained mTBI with LOC as civilians.

RESULTS

Among combat veterans with mTBI, 52% had NDs, 66% had PTSD and 50% had PTSD and an ND. Impaired olfaction was the most common ND, found in 65 veterans. The prevalence of an ND or PTSD correlated with the number of mTBI exposures with LOC. The prevalence of an ND or PTSD was >90% for more than five episodes of LOC. Severity of PTSD and impairment of olfaction increased with number of LOC episodes. The prevalence of an ND for the 34 combat veterans with one episode of LOC (4/34=11.8%) was similar to that of the 21 veterans of similar age and educational background who sustained civilian mTBI with one episode of LOC (2/21=9.5%, p-NS).

CONCLUSIONS

Impaired olfaction was the most frequently recognised ND. Repeated episodes of combat mTBI were associated with increased likelihood of PTSD and an ND. Combat setting may not increase the likelihood of an ND. Two possible connections between mTBI and PTSD are (1) that circumstances leading to combat mTBI likely involve severe psychological trauma and (2) that altered cerebral functioning following mTBI may increase the likelihood that a traumatic event results in PTSD.

Event-related potential studies of post-traumatic stress disorder: a critical review and synthesis

Despite the sparseness of the currently available data, there is accumulating evidence of information processing impairment in post-traumatic stress disorder (PTSD). Studies of event-related potentials (ERPs) are the main tool in real time examination of information processing. In this paper, we sought to critically review the ERP evidence of information processing abnormalities in patients with PTSD. We also examined the evidence supporting the existence of a relationship between ERP abnormalities and symptom profiles or severity in PTSD patients. An extensive Medline search was performed. Keywords included PTSD or post-traumatic stress disorder, electrophysiology or EEG, electrophysiology, P50, P100, N100, P2, P200, P3, P300, sensory gating, CNV (contingent negative variation) and MMN (mismatch negativity). We limited the review to ERP adult human studies with control groups which were reported in the English language. After applying our inclusion-exclusion review criteria, 36 studies were included. Subjects exposed to wide ranges of military and civilian traumas were studied in these reports. Presented stimuli were both auditory and visual. The most widely studied components included P300, P50 gating, N100 and P200. Most of the studies reported increased P300 response to trauma-related stimuli in PTSD patients. A smaller group of studies reported dampening of responses or no change in responses to trauma-related and/or unrelated stimuli. P50 studies were strongly suggestive of impaired gating in patients with PTSD. In conclusion, the majority of reports support evidence of information processing abnormalities in patients with PTSD diagnosis. The predominance of evidence suggests presence of mid-latency and late ERP components differences in PTSD patients in comparison to healthy controls. Heterogeneity of assessment methods used contributes to difficulties in reaching firm conclusions regarding the nature of these differences. We suggest that future ERP-PTSD studies utilize standardized assessment scales that provide detailed information regarding the symptom clusters and the degree of symptom severity. This would allow assessment of electrophysiological indices-clinical symptoms relationships. Based on the available data, we suggest that ERP abnormalities in PTSD are possibly affected by the level of illness severity. If supported by future research, ERP studies may be used for both initial assessment and treatment follow-up.

Victim-Offender Relationship Status Moderates the Relationships of Peritraumatic Emotional Responses, Active Resistance, and Posttraumatic Stress Symptomatology in Female Rape Survivors

This study examined whether the level of victim-offender relationship (VOR) moderated the relationship between peritraumatic fear and active resistance as well as the relationship between peritraumatic fear and posttraumatic stress symptom severity in a community sample of female rape survivors. One hundred thirty-five participants were interviewed about their emotional and behavioral responses during the rape and assessed for posttraumatic stress symptomatology within one month of the assault. Results indicated that peritraumatic fear was positively associated with active resistance, but only among survivors of acquaintance rape. Additionally, peritraumatic fear was positively associated with posttraumatic stress symptom severity, but only among survivors of intimate partner rape. These results suggest that VOR may be an important contextual factor that influences emotional and behavioral responses during rape as well as posttraumatic stress symptomatology in its aftermath.

Patterns and predictors of alcohol use in male and female urban police officers

In a large sample of urban police officers, 18.1% of males and 15.9% of females reported experiencing adverse consequences from alcohol use and 7.8% of the sample met criteria for lifetime alcohol abuse or dependence. Female officers had patterns of alcohol use similar to male officers and substantially more than females in the general population. Critical incident exposure and posttraumatic stress disorder (PTSD) symptoms were not associated with level of alcohol use. Greater psychiatric symptoms were related to adverse consequences from alcohol use. There was a noteworthy gender by work stress interaction: greater routine work stress related to lower current alcohol use in female officers. 

A polymorphism in the dysbindin gene (DTNBP1) associated with multiple psychiatric disorders including schizophrenia

BACKGROUND

A number of studies have found associations between dysbindin (DTNBP1) polymorphisms and schizophrenia. Recently we identified a DTNBP1 SNP (rs9370822) that is strongly associated with schizophrenia. Individuals diagnosed with schizophrenia were nearly three times as likely to carry the CC genotype compared to the AA genotype.

METHODS

To investigate the importance of this SNP in the function of DTNBP1, a number of psychiatric conditions including addictive behaviours and anxiety disorders were analysed for association with rs9370822.

RESULTS

The DTNBP1 polymorphism was significantly associated with post-traumatic stress disorder (PTSD) as well as nicotine and opiate dependence but not alcohol dependence. Individuals suffering PTSD were more than three times as likely to carry the CC genotype compared to the AA genotype. Individuals with nicotine or opiate dependence were more than twice as likely to carry the CC genotype compared to the AA genotype.

CONCLUSIONS

This study provides further support for the importance of DTNBP1 in psychiatric conditions and suggests that there is a common underlying molecular defect involving DTNBP1 that contributes to the development of several anxiety and addictive disorders that are generally recognised as separate clinical conditions. These disorders may actually be different expressions of a single metabolic pathway perturbation. As our participant numbers are limited our observations should be viewed with caution until they are independently replicated.

Diagnostic efficiency of the personality assessment inventory LOGIT function for posttraumatic stress disorder in women

In this study, we examined the diagnostic efficiency of the Personality Assessment Inventory (PAI; Morey, 1991) for the assessment of posttraumatic stress disorder (PTSD) in a community-based sample of women (n = 128). Receiver operating characteristic curves (ROC) were generated to examine the efficiency of the PAI PTSD LOGIT function as a tool for diagnosing PTSD. Using the Clinician Administered PTSD Scale as the reference standard, the PTSD LOGIT function performed well (area under the curve [AUC] = .856, standard error [SE] = .034). This represents performance consistent with more commonly used self-report PTSD scales, the Davidson Trauma Scale (AUC = .863, SE = .033) and the PAI Anxiety subscale Anxiety-Related Disorders Traumatic Experiences (AUC = .861; S.E. = .033). Results of this study suggest that the PAI PTSD LOGIT function may be a useful tool in assessing PTSD.

Adrenocortical responsiveness to infusions of physiological doses of ACTH is not altered in posttraumatic stress disorder

Early studies of posttraumatic stress disorder (PTSD) reported that abnormal function of the hypothalamic–pituitary–adrenocortical (HPA) system was associated with the disorder. However, subsequent studies attempting to identify a specific aspect of HPA dysfunction that characterizes PTSD have been marked by considerable inconsistency of results. A facet of HPA regulation that has been considered but not definitively investigated is the possibility that the responsiveness of the adrenal cortex to physiological concentrations of adrenocorticotropin (ACTH) is diminished in PTSD. Relationships between PTSD and the adrenal androgen dehydroepiandrosterone (DHEA) have also been postulated. In this study we investigated the magnitude and time course of changes in concentrations of plasma cortisol and DHEA in response to bolus infusions of physiological doses of ACTH _1–24 in PTSD patients and control subjects. We found no evidence for PTSD-related alterations in cortisol or DHEA secretion in response to stimulation by low doses of ACTH and conclude that adrenocortical responsiveness is normal in PTSD. Results from this and other studies suggest that the occurrence of defects in HPA function in PTSD may be specific responses to particular combinations of trauma type, genetic susceptibility, and individual history.

Intimate partner and general aggression perpetration among combat veterans presenting to a posttraumatic stress disorder clinic

This study examined rates and correlates of intimate partner and general aggression perpetration among 236 male combat veterans seeking services in a Veteran's Affairs posttraumatic stress disorder (PTSD) clinic. Approximately 33% of those in an intimate relationship reported perpetrating partner physical aggression in the previous year, and 91% reported partner psychological aggression. Comparable rates were found for general aggression perpetration among partnered and nonpartnered veterans. PTSD symptoms as well as symptoms of depression were associated with aggression across subgroups and forms of aggression, and PTSD symptoms reflecting arousal and lack of control were generally the strongest predictor of aggression. Findings indicate a need for additional aggression screening and intervention development for this population, and highlight the targeting of heightened arousal and lack of behavioral control in aggression interventions.

Event-related potentials to auditory stimuli in monozygotic twins discordant for combat: association with PTSD

Studies have demonstrated ERP abnormalities related to concentration difficulties in post-traumatic stress disorder (PTSD). We used an identical-twin, case-control design to investigate whether these abnormalities reflect pre-trauma vulnerability or the acquired consequence of PTSD. Vietnam combat veterans and their non-combat-exposed, identical twins completed a three-tone oddball task. Veterans with PTSD had delayed target N2 latencies compared to veterans without PTSD. In a small nonmedicated, nonsmoking subsample, veterans with PTSD also had significantly diminished target P3b amplitudes. A mixed-model, random-effects analysis on the nonmedicated, nonsmoking subsample that included the combat-unexposed co-twins showed a significant Diagnosis x Combat Exposure interaction for target P3b amplitude. Results replicate increased N2 latency and diminished P3b amplitude in PTSD and suggest that diminished P3b amplitude is an acquired condition in PTSD.

Sexual functioning in war veterans with posttraumatic stress disorder

AIM

To assess the sexual dysfunction among Croatian war veterans with combat-related posttraumatic stress disorder (PTSD).

METHOD

The study included two groups--101 war veterans with PTSD and 55 healthy control volunteers receiving outpatient general health care in several outpatient clinics in Split. tructured interviews on different aspects of sexual functioning were conducted from April to October 2007 by trained interviewers.

RESULTS

Respondents with PTSD reported significantly less sexual activity during the previous month than controls (sexual fantasies 2.5+/-1.6 vs 3.7+/-1.7, P<0.001; foreplay 2.4+/-1.6 vs 3.5+/-1.6, P<0.001; oral sex 1.6+/-1.2 vs 2.6+/-1.5, P<0.001; and sexual intercourse 2.4+/-1.6 vs 3.8+/-1.5, P<0.001) on a 7-point Likert type scale (from 1--not a single time to 7--more times a day). As reasons for reduced sexual activities, respondents with PTSD more frequently than controls reported their own health problems (3.2+/-1.2 vs 1.5+/-0.8; P<0.001) or health problems of their partner (2.4+/-1.1 vs 1.9+/-1.1; P=0.004), whereas controls more frequently reported overwork than respondents with PTSD (2.6+/-1.1 vs 2.1+/-1.0; P=0.007) on a 5-point Likert type scale (from 1--not a single time to 5--always). Respondents with PTSD reported antidepressant (n=52, 51%) or anxyolitics use (n=73, 72.3%). In a subgroup analysis, respondents with PTSD who were taking antidepressants masturbated less frequently than those who were not taking them (1.9+/-1.3 vs 2.5+/-1.6; P=0.039), whereas premature ejaculation was more often experienced by respondents with PTSD who were not taking antidepressants than by those who were taking them (3.5+/-1.8 vs 2.7+/-1.5; P<0.049) both on a 7-point Likert type scale (from 1--not a single time to 7--more times a day). Conclusion. War veterans with PTSD had less sexual activity, hypoactive sexual desire, and erectile difficulties. Antidepressant therapy in veterans with PTSD may be associated with hypoactive sexual desire.

Disruption of bradycardia associated with discriminative conditioning in combat veterans with PTSD

The effects of combat-related posttraumatic stress disorder (PTSD) on heart rate (HR) responding associated with a discriminative delay eyeblink (EB) conditioning paradigm are reported. Combat PTSD+, Combat PTSD-, and Noncombat PTSD- veterans were assessed with psychometric self-report measures, and baseline heart rate variability (HRV) was measured before receiving a 72-trial session of discriminative EB classical conditioning. Two types (red or green light) of conditioned stimuli (CS) were used: one (CS+) predicted a tone, followed immediately by an aversive stimulus (corneal airpuff); the other (CS-) predicted a tone alone, not followed by the airpuff. The light signal was presented for 5 seconds, during which HR was measured. On all psychometric measures, the PTSD+ subgroup was significantly different from the PTSD- subgroups (Combat + Noncombat), and the PTSD- subgroups did not significantly differ from each other. A linear deceleration in HR to CS+ and CS- signals was found in the combined PTSD- subgroup and on CS- trials in the PTSD+ subgroup, but was not present on CS+ trials in the PTSD+ subgroup. Results are interpreted with respect to a behavioral stages model of conditioned bradycardia and in terms of neural substrates which are both critical to HR conditioning and known to be abnormal in PTSD.

Stress, memory and Bosnian war veterans

The aim of this study was to analyze cognitive dysfunction in PTSD. The testing included 79 Bosnian Army veterans, who participated in Bosnian war from 1992 to 1995. Out of 79 tested war veterans, 45 of developed PTSD while 34 did not. The veterans without PTSD where included in the control group. All the war veterans were of the same education level (secondary education) and between 30 and 50 years of age. Rivermead Behavioral Memory Test - RBMT was applied to all the subjects. The test was originally developed for the purpose of everyday memory problems identification. Clear goal of the 10 RBMT subtests is simulation of everyday life situations. PTSD group achieved significantly lower results than the control group. Results of the total score showed highly significant difference between PTSD and control group. Value of the t-test is t=10,056 with significance level of p<0,001. The same conclusion stands for any RBMT subtest. Numerous psychological studies on PTSD patients show more prominent psychological deficit in war veterans. Our study clearly confirms that finding.

Development and validation of short versions of the internal mental distress and behavior complexity scales in the Global Appraisal of Individual Needs (GAIN)

Co-occurring mental distress and behavior problems are the norm in substance abuse treatment but are often poorly assessed due to resource constraints. This paper describes the development and validation of scales measuring internalizing mental distress and externalizing behavior problems that are shorter versions of comorbidity scales found in the full Global Appraisal of Individual Needs (GAIN). GAIN data from two treatment outcome studies, one involving adolescents and the other on adults, were used in the creation and testing of the scales. Subsets of items from the full GAIN scales were selected for the short scales through the application of standard psychometric principles. The short comorbidity scales still have moderate to high reliability and are highly correlated with the full scales. Parallel tests of construct validity show no substantial loss when moving from the longer to shorter versions. The short scales maintain good sensitivity and specificity for predicting diagnostic impressions.

Behavioral couples therapy for comorbid substance use disorders and combat-related posttraumatic stress disorder among male veterans: an initial evaluation

Outcomes after behavioral couples therapy (BCT) were compared for 19 dually diagnosed veterans with combat-related PTSD and a substance use disorder (SUD, primarily alcohol dependence) and 19 veterans with SUD only. Clients with and without comorbid PTSD had very similar pre-treatment clinical profiles on dimensions of substance misuse, relationship functioning, and psychological symptoms. Further, both PTSD and non-PTSD clients showed good compliance with BCT, attending a high number of BCT sessions, taking Antabuse, and going to AA. Finally, both PTSD and non-PTSD groups improved from before BCT to immediately after and 12 months after BCT. Specific improvements noted were increased relationship satisfaction and reductions in drinking, negative consequences of drinking, male-to-female violence, and psychological distress symptoms. Extent and pattern of improvement over time were similar whether the client had PTSD or not. The present results suggest that BCT may have promise in treating clients with comorbid SUD and combat-related PTSD.

Clarifying the origin of biological abnormalities in PTSD through the study of identical twins discordant for combat exposure

A biological abnormality found to be associated with posttraumatic stress disorder (PTSD) may be, among other things, a pretrauma vulnerability factor, that is, it may have been present prior to the event's occurrence and increased the individual's likelihood of developing PTSD upon traumatic exposure. Alternately, it may be an acquired PTSD sign, that is, it may have developed after the traumatic exposure, along with the PTSD. We have studied pairs of Vietnam combat veterans and their noncombat-exposed, identical twins in an effort to resolve these competing origins. Combat veterans were diagnosed as current PTSD or non-PTSD (i.e., never had). Average heart rate responses (HRRs) to a series of sudden, loud-tone presentations were larger in Vietnam combat veteran twins with PTSD, but these larger responses were not shared by their noncombat-exposed cotwins, whose responses were similar to those of the non-PTSD combat veterans and their noncombat-exposed cotwins. These results suggest that larger HRRs to sudden, loud tones represent an acquired sign of PTSD. In contrast, increased neurological soft signs (NSSs), diminished hippocampal volume, and presence of abnormal cavum septum pellucidum (CSP) were found in Vietnam combat veteran twins with PTSD and their "high-risk," unexposed cotwins compared to Vietnam combat veteran twins without PTSD and their "low-risk," unexposed cotwins. These results support the conclusion that the latter abnormalities represent antecedent, familial vulnerability factors for developing chronic PTSD upon exposure to a traumatic event.

Longitudinal Assessment of Dissociation in Holocaust Survivors With and Without PTSD and Nonexposed Aged Jewish Adults

The trajectory of posttraumatic stress disorder (PTSD) and PTSD-related symptoms in relation to aging is not well understood. We previously observed higher levels of dissociation as measured by the Dissociative Experiences Scale (DES) among older Holocaust survivors with, compared to those without, PTSD, though scores on the DES in Holocaust survivors were markedly lower than those that had been reported for younger cohorts. We undertook a longitudinal evaluation of dissociation in Holocaust survivors. Twenty-six Holocaust survivors with current PTSD, 30 Holocaust survivors without current PTSD, and 19 nonexposed were evaluated at the initial evaluation and subsequently 8.11 years later. Repeated measures analysis of variance (ANOVA) on the DES scores from these times demonstrated a significant main effect for time and a significant group by time interaction, reflecting a marked decline in Holocaust survivors, particularly those with PTSD. Controlling for age obliterated the effect of time, but not the group by time interaction. A similar pattern was shown with The Clinician Administered PTSD Scale (CAPS) scores. Different symptoms related to PTSD show different trajectories of change with age, with dissociation appearing to be less prominent with age.

Predictors of Posttraumatic Stress in Police and Other First Responders

We provide an overview of previous research conducted by our group on risk and resilience factors for PTSD symptoms in police and other first responders. Based on our work, the findings of other investigators on individual differences in risk for PTSD, and drawing on preclinical studies fear conditioning and extinction, we propose a conceptual model for the development of PTSD symptoms emphasizing the role of vulnerability and resilience to peritraumatic panic reactions. We tested this conceptual model in a cross-sectional sample of police officers (n = 715). Utilizing an hierarchical linear regression model we were able to explain 39.7% of the variance in PTSD symptoms. Five variables remained significant in the final model; greater peritraumatic distress (beta = 0.240, P < .001), greater peritraumatic dissociation (beta = 0.174, P < .001), greater problem-solving coping (beta = 0.103, P < .01), greater routine work environment stress (beta = 0.182, P < .001), and lower levels of social support (beta = -0.246, P < .001). These results were largely consistent with the proposed conceptual model. Next steps in this line of research will be to test this model prospectively in a sample of 400 police academy recruits assessed during training and currently being followed for the first 2 years of police service.

Post-traumatic stress disorder: evidence-based research for the third millennium

The stress that results from traumatic events precipitates a spectrum of psycho-emotional and physiopathological outcomes. Post-traumatic stress disorder (PTSD) is a psychiatric disorder that results from the experience or witnessing of traumatic or life-threatening events. PTSD has profound psychobiological correlates, which can impair the person's daily life and be life threatening. In light of current events (e.g. extended combat, terrorism, exposure to certain environmental toxins), a sharp rise in patients with PTSD diagnosis is expected in the next decade. PTSD is a serious public health concern, which compels the search for novel paradigms and theoretical models to deepen the understanding of the condition and to develop new and improved modes of treatment intervention. We review the current knowledge of PTSD and introduce the role of allostasis as a new perspective in fundamental PTSD research. We discuss the domain of evidence-based research in medicine, particularly in the context of complementary medical intervention for patients with PTSD. We present arguments in support of the notion that the future of clinical and translational research in PTSD lies in the systematic evaluation of the research evidence in treatment intervention in order to insure the most effective and efficacious treatment for the benefit of the patient.

Pavlovian eyeblink conditioning in combat veterans with and without post-traumatic stress disorder

Several recent studies have investigated relationships between post-traumatic stress disorder (PTSD) and learning and memory problems. These reports have found in general that not only does PTSD affect trauma-related memories, but when patients with PTSD are compared with similar trauma patients without PTSD, general memory impairments have been found. The present paper reports a study in which associative learning, using Pavlovian eyeblink conditioning, was investigated in combat veterans with and without chronic PTSD, using interstimulus intervals of 500 and 1000 msec in two separate experiments. Although several recent reports suggest that larger-magnitude autonomic conditioned responses occur in patients with PTSD during Pavlovian conditioning, the present study found evidence of impaired Pavlovian eyeblink conditioning in combat veterans with and without PTSD, compared to non-combat veterans. Although these data suggest that combat leads to an impaired associative learning process regardless of whether PTSD is apparent, a group of community-dwelling combat veterans not under medical treatment showed normal conditioning, suggesting that variables other than prior combat must also be involved.