Structures des réactions de stress posttraumatique consécutives à une catastrophe humaine délibérée

Doctorat en sciences psychologiques -- UCL, 199

A phenomenological analysis of disaster-related experiences in fire and emergency medical services personnel

This article explores the experiences of fire and Emergency Medical Services (EMS) personnel during and immediately after a technological event using a phenomenological approach. Personnel engaged in the rescue operations during and immediately after the Ghislenghien gas explosion reflected upon their experiences in their responses to a specially designed, self-reporting questionnaire that included open-ended questions. Firefighters reported more perceived threat and direct exposure to death than did EMS personnel. Qualitative analysis indicates that the central characteristics of this potentially traumatizing event were the suddenness and massiveness of the impact, and the fact that it involved young victims and/or multiple deaths. With regard to emotions, powerlessness, horror, fear, a sense of apocalypse, and grief were experienced by both firefighters and EMS personnel. Firefighters noted that the death of colleagues, the involvement of friends and family, the massive impact, and exposure to the burned victims were most shocking. Emergency Medical Services personnel and in-hospital staff reported the impact, the confrontation with death, the involvement of friends and family, and the pain, suffering, and screaming of burned victims as the most shocking aspects of this event. Qualitative differences in the lived experiences of firefighters, EMS personnel, and in-hospital staff might be explained by differences in life threat, contact with death, and various degrees of training

Does exposure type impact differentially over time on the development of mental health disturbances after a technological disaster?

BACKGROUND: A longitudinal study was conducted in order to assess the impact of the Ghislenghien disaster (July 30th, 2004) on physical, mental and social health in the affected population. The present study explored the risk for the development of four types of mental health disturbances (MHD) due to exposure to different aspects of this technological disaster in comparison with data obtained from previous health surveys among the population of the same province. METHODS: Surveys were conducted 5 months (T1) and 14 months (T2) after the disaster. Potential adult victims (≥15 years) were included (n = 1027 and 579 at T1 and T2 respectively). The "Symptom Checklist-90-Revised" (SCL-90-R) has been used in order to compute actual prevalence rates of somatization-, depression-, anxiety- and sleeping disturbances for three defined exposure categories: direct witnesses who have seen human damage (SHD), direct witnesses who have not seen human damage (NSHD) and indirect witnesses (IW). Those prevalence rates were compared with overall rates using the inhabitants of the province of Hainaut (n = 2308) as reference population. A mental health co-morbidity index was computed. Relative risks were estimated using logistic regression models. RESULTS: Prevalence rates of the four MHD were much higher for the SHD than for the other exposure groups, at T1 and T2. Moreover, NSHD and IW had no increased risk to develop one of the 4 types of MHD compared to the reference population. The SHD had at T1 and T2 good 5-times a higher risk for somatization, about 4-times for depression and sleeping disorders, and 5- to 6-times for anxiety disorders respectively. Further, they suffered 13 times, respectively 17 times more from all mental disorders together. CONCLUSIONS: The present study calls attention to the fact that mental health problems disturbances are significantly more prevalent and long-lasting among survivors who have directly been exposed to human damage

Degree of exposure and peritraumatic dissociation as determinants of PTSD symptoms in the aftermath of the Ghislenghien gas explosion

BACKGROUND: This paper investigates risk factors for the development of posttraumatic stress symptoms in the different survivor groups involved in a technological disaster in Ghislenghien (Belgium). A gas explosion instantly killed five firefighters, one police officer and 18 other people. Moreover, 132 people were wounded among which many suffered severe burn injuries. METHODS: In the framework of a large health survey of people potentially involved in the disaster, data were collected from 3,448 households, of which 7,148 persons aged 15 years and older, at 5 months (T1) and at 14 months (T2) after the explosion. Hierarchical regression was used to determine the significant predictors and to assess their proportion in variance accounted for. RESULTS: The degree of exposure to the disaster was a predictor of the severity of posttraumatic stress symptoms. Peritraumatic dissociation appeared to be the most important predictor of the development of posttraumatic stress symptoms at T1. But at T2, posttraumatic stress symptoms at T1 had become the most important predictor. Dissatisfaction with social support was positively linked to development of posttraumatic stress symptoms at T1 and to the maintenance of these symptoms at T2. Survivors who received psychological help reported significant benefits. CONCLUSIONS: In harmony with the findings from studies on technological disasters, at T1 6,0% of the respondents showed sufficient symptoms to meet all criteria for a full PTSD. At T2, 6,6% still suffered from posttraumatic stress symptoms. The symptoms of the different victim categories clearly indicated the influence of the degree of exposure on the development of posttraumatic stress symptoms. Problems inherent to retrospective scientific research after a disaster are discussed

Does exposure type impact differentially over time on the development of mental health disturbances after a technological disaster?

BACKGROUND: A longitudinal study was conducted in order to assess the impact of the Ghislenghien disaster (July 30th, 2004) on physical, mental and social health in the affected population. The present study explored the risk for the development of four types of mental health disturbances (MHD) due to exposure to different aspects of this technological disaster in comparison with data obtained from previous health surveys among the population of the same province. METHODS: Surveys were conducted 5 months (T1) and 14 months (T2) after the disaster. Potential adult victims (≥15 years) were included (n = 1027 and 579 at T1 and T2 respectively). The "Symptom Checklist-90-Revised" (SCL-90-R) has been used in order to compute actual prevalence rates of somatization-, depression-, anxiety- and sleeping disturbances for three defined exposure categories: direct witnesses who have seen human damage (SHD), direct witnesses who have not seen human damage (NSHD) and indirect witnesses (IW). Those prevalence rates were compared with overall rates using the inhabitants of the province of Hainaut (n = 2308) as reference population. A mental health co-morbidity index was computed. Relative risks were estimated using logistic regression models. RESULTS: Prevalence rates of the four MHD were much higher for the SHD than for the other exposure groups, at T1 and T2. Moreover, NSHD and IW had no increased risk to develop one of the 4 types of MHD compared to the reference population. The SHD had at T1 and T2 good 5-times a higher risk for somatization, about 4-times for depression and sleeping disorders, and 5- to 6-times for anxiety disorders respectively. Further, they suffered 13 times, respectively 17 times more from all mental disorders together. CONCLUSIONS: The present study calls attention to the fact that mental health problems disturbances are significantly more prevalent and long-lasting among survivors who have directly been exposed to human damage

Children following the Ghislenghien gas explosion : PTSD predictors and risk factors

This paper describes the risk factors for the development of posttraumatic stress reactions in children after a technological disaster in Ghislenghien, Belgium in 2004. Children were assessed at five months (T1, N = 128) and at fourteen months (T2; N = 69). At T1 and T2 respectively, 7 % and 4 % of the responding children showed severe posttraumatic stress reactions. Of those who showed posttraumatic stress reactions at T1, 60 % recovered from these symptoms at T2. One child developed severe posttraumatic stress reactions between T1 and T2. Risk factors related to posttraumatic stress reactions were: (a) type of exposure to the disaster; (b) peritraumatic dissociation during or immediately after the disaster; and (c) dissatisfaction with the received psychological help

Changes in sensation seeking and need for structure before and after a combat deployment.

n this study, soldiers’ adaptation with the situational demands on combat deployment is explored. Certain changes on the level of two needs-based personality characteristics, Sensation Seeking (SS) and Need for Structure (NS) take place across deployment: soldiers who are lower in SS were more inclined to seek for sensations after deployment, and soldiers at the extremes of the NS dimension, modified their behavioral tendencies after deployment towards a moderate level. According to our findings, these changes suggest at least temporal characteristic adaptations with certain environmental demands. We discuss the implications of these findings for research and practic