Faculty Bibliography

Posttraumatic stress disorder (PTSD) occurs when significant intrusion, avoidance, and hyperarousal symptoms are manifest for at least 1 month following exposure to a traumatic event, with at least 1 month following exposure to a traumatic event, with at least 1 month elapsed betwenn the event and the diagnossis (Diagnostic and Statistical Manual of Mental Disorders, 4th edition, 1994 [DSM-IV]).(1) However, such symptoms are not necessarily manifest in the immediate aftermath of the trauman,(2) nor does their intial presence strongly predict who will develop PTSD.(3) One immediate response to trauma which has been convicingly linked to PTSD symptoms is peritraumatic dissociation.(4) In this poster, we briefly introduce a new scale assessing immediate responses distinct from peritraumatic dissociation, and we examine its power to predict PTSD symptoms.

BACKGROUND: Posttraumatic stress disorder (PTSD) may be associated with a general impairment of cognitive function that extends beyond the processing of trauma-specific stimuli. Suppression of the auditory P50 response to repeated stimuli occurs in normal subjects and reflects the central nervous system's ability to screen out repetitive stimuli, a phenomenon referred to as sensory gating. This study examines P50 sensory gating to nonstartle auditory stimuli in PTSD subjects and normal controls. METHODS: P50 generation and gating were studied using a conditioning/testing paradigm in 15 male subjects with PTSD and 12 male controls. P50 test/conditioning (T/C) ratios were estimated using the Singular Value Decomposition method. RESULTS: The amplitude of the P50 response to the conditioning stimulus did not differ in subjects with PTSD compared to normal controls. The P50 T/C ratio is increased in PTSD subjects (mean = .408, SD = .275) as compared to the controls (mean = .213, SD = .126, two tailed t, p = .024). CONCLUSIONS: This study provides evidence that PTSD is associated with impaired gating to nonstartle trauma-neutral auditory stimuli

The purpose of this nursing research was to describe the trauma experience of sheltered battered women. Trauma history was operationalized as the participant's experience with traumatic life events in general (Trauma History Questionnaire [B. L. Green, 1995]) and with battering specifically (Conflict Tactics Scale, including a Physical Injury Severity scale). A convenience sample of 50 ethnically diverse women in the San Francisco Bay area was obtained from those residing in 2 shelters. Participants had experienced an average of 8.1 +/- 4.6 traumatic events (battering and nonbattering) over the course of their lives. Analysis of relationships between selected biopsychosocial and trauma history variables revealed the importance and beneficial effects of spiritual beliefs to many sheltered battered women

This study examines the longitudinal course and predictors of stress-specific and general symptomatic distress in emergency services personnel. A three-group quasi-experimental design was used to determine the responses of 322 rescue workers to the Loma Prieta earthquake Interstate 880 Freeway collapse and to unrelated control critical incidents. Self-report questionnaires, including measures of incident exposure, peritraumatic dissociation and emotional distress, and current symptoms, were administered 1.9 years (initial) and 3.5 years (follow-up) after the freeway collapse. Despite modest symptom improvement at follow-up, rescue workers were at risk for chronic symptomatic distress after critical incident exposure. Peritraumatic dissociation accounted for significant increments in current posttraumatic stress disorder symptoms, over and above exposure, adjustment, years of experience, locus of control, social support, and general dissociative tendencies. The results suggest that rescue workers, particularly those with more catastrophic exposure and those prone to dissociate at the time of the critical incident, are at risk for chronic symptomatic distress

PURPOSE: To describe sheltered battered women's sleep patterns and resulting daytime fatigue. The model for symptom management framed this study to describe one component of the model--symptom experience. Beginning evidence suggests that sheltered battered women experience disturbed sleep and fatigue that can interfere with vital activities. DESIGN: Descriptive using a convenience sample of 50 ethnically diverse women residing at least 21 days in battered women's shelters located in one western U.S. city. The study was done in 1997. METHODS: The Pittsburgh Sleep Quality Index (PSQI), the Mini Motionlogger Actigraph, a sleep diary, the Visual Analogue Scale for Fatigue, and an open-ended interview were used to collect data. Descriptive and inferential statistics were used to analyze the quantitative data. Qualitative data were analyzed to determine patterns and themes. FINDINGS: Seventy percent of the women had global PSQI scores of greater than five indicating poor sleep and 17 (34%) had a sleep efficiency index of 80% or less. Fourteen (28%) of the women went to bed very fatigued (> 66 mm) and 20 (40%) woke up very fatigued (> 33 mm). CONCLUSIONS: The majority of sheltered battered women experienced disturbed sleep and daytime fatigue. Both personal and environmental variables were found to significantly affect sleep patterns. Sheltered battered women can benefit from information about sleep disturbances and sleep enhancing self-care strategies

OBJECTIVE: This study analyzed questionnaire items that address complaints about sleep from the National Vietnam Veterans Readjustment Study, a nationally representative sample of the 3.1 million men and women who served in Vietnam. This study compared the frequency of nightmares and difficulties with sleep onset and sleep maintenance in male Vietnam theater veterans with male Vietnam era veteran and male civilian comparison subjects. It focused on the role of combat exposure, nonsleep posttraumatic stress disorder (PTSD) symptoms, comorbid psychiatric and medical disorder, and substance abuse in accounting for different domains of sleep disturbance. METHOD: The authors undertook an archival analysis of the National Vietnam Veterans Readjustment Study database using correlations and linear statistical models. RESULTS: Frequent nightmares were found exclusively in subjects diagnosed with current PTSD at the time of the survey (15.0%). In the sample of veterans who served in Vietnam (N = 1,167), combat exposure was strongly correlated with frequency of nightmares, moderately correlated with sleep onset insomnia, and weakly correlated with disrupted sleep maintenance. A hierarchical multiple regression analysis showed that in Vietnam theater veterans, 57% of the variance in the frequency of nightmares was accounted for by war zone exposure and non-sleep-related PTSD symptoms. Alcohol abuse, chronic medical illnesses, panic disorder, major depression, and mania did not predict the frequency of nightmares after control for nonsleep PTSD symptoms. CONCLUSIONS: Frequent nightmares appear to be virtually specific for PTSD. The nightmare is the domain of sleep disturbance most related to exposure to war zone traumatic stress

The purpose of this study was to develop an instrument for the measurement of present-state dissociative symptoms, the Clinician Administered Dissociative States Scale (CADSS). Reported here are interrater reliability and internal consistency of the CADSS, validity as assessed by comparisons with other instruments for the assessment of dissociation, and sensitivity of the CADSS to discriminate patients with dissociative disorders from patients with other psychiatric disorders and healthy subjects. Initial analyses indicated good interrater reliability and construct validity for the CADSS. Scores on the CADSS discriminated patients with dissociative disorders from the other groups

The Multiple Stressor Debriefing (MSD) model was used to debrief 112 American Red Cross workers individually or in groups after their participation in the 1994 Los Angeles earthquake relief effort. Two composite case examples are presented that illustrate individual and group debriefings using the MSD model. A questionnaire which evaluated workers' experience of debriefing, was completed by 95 workers. Results indicated that workers evaluated the debriefings in which they participated positively. In addition, as participant to facilitator ratio increased, workers shared less of their feelings and reactions about the disaster relief operation. These findings, as well as more specific issues about debriefing, are discussed