Biomedical subjects

R A Bryant

Publications and source records attributed to R A Bryant.

At least 73 records · Page 4Linked to original sources

PubMed1996

Initial posttraumatic stress responses following motor vehicle accidents.

Posttraumatic stress was assessed in 114 motor vehicle accident (MVA) victims within 2 weeks of hospital admission. Approximately one third of patients reported high levels of posttraumatic stress anxiety. Intrusion symptoms were best predicted by fear of the MVA and absence of head injury. Avoidance symptoms were best predicted by fear of the accident and recent stressful events. Findings indicate that intrusion and avoidance responses to trauma are mediated by different patterns of injury-related and response-related factors.

Accidents, Traffic↗

PubMed1996

Posttraumatic stress reactions in volunteer firefighters.

Volunteer firefighters in NSW were surveyed for experiences of posttraumatic stress. Firefighters were asked to describe their experiences of stress and indices were obtained of psychological disturbance. Findings indicated that most firefighters felt that their safety had been threatened. One-quarter of firefighters indicated that they experienced significant levels of posttraumatic stress, although many respondents attributed their stress to personal events. Posttraumatic stress was associated with multiple and recent critical incidents. Findings are discussed in terms of etiological factors of posttraumatic stress and the need for appropriate intervention.

Adolescent↗

PubMed1996

Predictors of post-traumatic stress disorder following burns injury.

Burns patients were assessed 12 months following their injury to determine the factors that predict development of post-traumatic stress disorder (PTSD). Among 35 patients, 31 per cent suffered PTSD, 29 per cent suffered subclinical PTSD reactions and 40 per cent displayed no PTSD symptoms. Concern over scarring and an avoidant coping style accounted for 61 per cent of the variance in post-traumatic stress symptomatology. Only half of the patients reporting PTSD had sought professional assistance. The results indicate that postinjury adjustment factors are critical determinants of PTSD development following burns. Implications for therapeutic interventions are discussed.

Adaptation, Psychological↗

PubMed1996

Incidence of chronic pain following traumatic brain injury.

OBJECTIVE: To index the frequency of reported chronic pain in patients with traumatic brain injury (TBI). DESIGN: A case series study was conducted on consecutive patients with TBI. SETTING: TBI patients were recruited from an adult tertiary care center brain injury clinic. PATIENTS: A consecutive sample of 132 patients who attended a brain injury rehabilitation center after TBI. The sample included 53 mild and 79 moderate/severe TBI patients. OUTCOME MEASURES: Patients were administered a protocol that indexed pain site, frequency, severity, and duration. RESULTS: Chronic pain was reported by 58% of mild TBI and 52% of moderate/severe TBI patients. Headaches were the most commonly reported pain problem. Chronic headaches were reported by 47% of mild TBI patients and 34% of moderate/ severe TBI patients. Neck/shoulder, back, upper limb, and lower limb pain were reported similarly by mild and moderate/severe TBI patients. CONCLUSIONS: Findings indicate that chronic pain is a significant problem in mild and moderate/severe TBI patients. More effective diagnosis of TBI patients with chronic pain may facilitate rehabilitation of these patients.

Adult↗

PubMed1995

Avoidant coping style and post-traumatic stress following motor vehicle accidents.

Predictors of post-traumatic intrusive symptomatology were studied in 56 motor vehicle accident (MVA) survivors 12 months after their MVA. Measures were obtained on Ss' subjective response to the trauma, objective indices of injury severity, coping response (Coping Style Questionnaire), and post-traumatic stress (Impact of Event Scale; IES). Significant levels of intrusive and avoidance symptomatology were reported by 20% of MVA survivors. An avoidant coping style and compensation accounted for 41% of variance of IES-Intrusion scores. Findings are discussed in terms of the role of avoidance behaviour in post-traumatic adjustment.

Accidents, Traffic↗

PubMed1995

Eye movement and electrodermal responses to threat stimuli in post-traumatic stress disorder.

A core feature of post-traumatic stress disorder (PTSD) is hypervigilence to threatening material. This study measured processing of threat material in PTSD with simultaneously acquired initial eye movements and electrodermal activity, following presentation of threatening and neutral words. Ten PTSD subjects and 10 controls were presented with 4 words in parafoveal range. On trials in which a threat word was present, PTSD subjects demonstrated initial eye fixations on the threat word more than controls. PTSD subjects also demonstrated more orienting responses on all trials than controls. These results suggest that processing of threat information in PTSD can be usefully investigated with convergent psychophysiological methodologies.

Adult↗

PubMed1995

Acute stress response: a comparison of head injured and non-head injured patients.

Acute stress responses were investigated in head injured (N = 38) and non-head injured (N = 38) motor vehicle accident victims immediately following their trauma. Results indicated that amnesia of the traumatic event was associated with less acute post-traumatic stress, intrusive symptoms, perceived injury, and fear of future risk. A proportion of head injured patients reported intrusive and avoidance symptoms despite being amnesic of their trauma. Findings are discussed in terms of the differential post-traumatic adjustment of head injured and non-head injured traumatized patients.

Accidents, Traffic↗

PubMed1995

Processing threatening information in posttraumatic stress disorder.

The authors used a modified Stroop task to study how people with posttraumatic stress disorder (PTSD) process threatening information. Participants were motor vehicle accident (MVA) survivors with either PTSD (n = 15), simple phobia of driving (n = 15), or low anxiety (n = 15). Participants named colors of 4 types of words: strong threat words (MVA related), mild threat words (MVA related), positive words, and neutral words. Participants with PTSD demonstrated greater interference on strong threat words than those with simple phobia or low anxiety. Contrary to expectation, participants with simple phobia did not display an interference effect. Findings suggest that individuals with PTSD and simple phobia may process threatening information differently. The nature of attentional bias in different anxiety conditions following trauma is discussed.

Accidents, Traffic↗

PubMed1995

Autobiographical memory across personalities in dissociative identity disorder: a case report.

A core feature of dissociative identity disorder (DID) is the amnesia that exists between personalities. This study investigated autobiographical memory in a patient, HS, prior to and after her diagnosis with DID. This diagnosis was associated with increased recall of traumatic memories that were reported by a child personality. The child personality was able to recognize only half of the memories reported by the host personality. HS's responses were dissimilar to responses of control and nonexperiment participants. These findings suggest that DID is associated with alterations in autobiographical memory and that memories differ across personalities. Results are discussed in terms of memory and pseudomemory development in DID.

Adult↗

PubMed1995

Fantasy proneness, reported childhood abuse, and the relevance of reported abuse onset.

This study investigated the relationship between fantasy proneness and the age at which reported childhood sexual abuse occurs. Seventeen adult females who reported having been sexually abused before the age of 7 years, 20 females who reported having been abused after the age of 7 years, and 20 females who reported having never been abused were administered two measures of imaginative involvement (Tellegen Absorption Scale [TAS] and Inventory of Childhood Memories and Imaginings [ICMI]). Participants who were reportedly abused early in childhood obtained higher scores on the TAS and ICMI than participants who were reportedly abused later in childhood, who in turn obtained higher scores than the control participants. Findings are discussed in terms of factors that mediate fantasy proneness and reports of childhood abuse.

Adolescent↗

PubMed1995

Hypnotic induction of an epileptic seizure: a brief communication.

This case study investigated the utility of hypnosis to precipitate a seizure in a patient with refractory epilepsy. The patient was twice administered a hypnotic induction and a suggestion to age regress to a day when he was distressed and suffered repeated seizures. The patient did not respond to the first hypnotic suggestion; however, an epileptic seizure was observed in the second hypnotic session. Videorecording and subdural electroencephalograph recording confirmed that he suffered an epileptic seizure. Postexperimental inquiry revealed that the patient used deliberate cognitive strategies to avoid seizure onset in the first session but adopted a more constructive cognitive style in the second session. Findings are discussed in terms of emotions, hypnosis, and cognitive style as mediating factors in the experimental precipitation of epileptic seizures.

Adult↗

PubMed1995

Posttraumatic stress in volunteer firefighters. Predictors of distress.

Posttraumatic stress was studied in volunteer firefighters who regularly engage in threatening situations. In response to a survey of firefighters across New South Wales, Australia, 751 firefighters completed questionnaires concerning trauma experiences and posttraumatic stress levels. The presence of posttraumatic stress was best predicted by a combination of event-related and response-related aspects of the trauma. Firefighters' proximity to death, perceived severity of trauma, and fear of the traumatic event were closely associated with posttraumatic stress. In addition, the presence of stresses subsequent to the trauma, including unemployment and the loss of a loved one, was also related to posttraumatic stress. Findings are discussed in terms of etiological factors in posttraumatic stress and the need for adequate coping resources to manage the aftermath of a traumatic event.

Adolescent↗

PubMed1995

Psychological impairment following motor vehicle accidents.

This study investigated the rate of psychological impairment and stressful life events in survivors of motor vehicle accidents. Fifty-six patients who had been hospitalised because of motor-vehicle-accident-related injuries were reviewed twelve months after the accident. In this sample, 41 per cent of patients reported significant levels of psychological impairment. Patients reporting psychological disturbance were characterised by having more pain, unemployment, substance abuse, avoidance of road transport and compensation claims. Only 44 per cent of patients reporting significant psychological impairment had sought professional help for their conditions. Psychological dysfunction following motor vehicle accidents appears to be a common occurrence, and education of medical personnel and survivors is required to enhance identification and management of this problem.

Accidents, Traffic↗

PubMed1993

Ostomy patient management: care that engenders adaptation.

The patient requiring ostomy surgery has needs above and beyond the typical perioperative needs of an individual experiencing major abdominal surgery. These needs may be categorized as technical ostomy management, information, and emotional support. The health care team managing ostomy patients must be prepared to address the patients' need in these three categories. This can be accomplished when the multidisciplinary team establishes a comprehensive plan of care that consists of five elements: information, technical expertise, psychosocial support, referrals, and surveillance. Each element plays a critical role in the patients' adaptation to ostomy surgery. Pertinent aspects of each element are described. By incorporating these elements into the plan of care, the health care team engenders patient adaptation to ostomy surgery.

Adaptation, Psychological↗

PubMed1991

Trance logic in hypnosis and imagination.

In 2 experiments we investigated trance logic, or the tolerance of logical incongruity, in age regression and hallucination. Experiment 1 tested 21 hypnotizable and 19 unhypnotizable subjects in an application of the real-simulating model of hypnosis. Experiment 2 tested 26 high and 19 low imagery ability subjects in an adaptation of the model to the imagination context. Subjects' experiences were investigated through the experiential analysis technique. More real than simulating subjects displayed trance logic during age regression, but they did not differ on the major measures of trance logic during hallucination. This pattern of responding occurred in both the hypnosis and the imagination contexts. Subjects' comments suggested that completeness of and belief in age regression or hallucination may play some role in trance logic. The importance of understanding trance logic from the subject's point of view is discussed.

Adolescent↗

PubMed1990

Hypnotic blindness and the relevance of cognitive style.

Real, hypnotized and simulating, unhypnotized subjects were instructed to use either a constructive or a concentrative cognitive style when attempting to respond to a suggestion for hypnotic blindness; also, some subjects were administered the suggestion without any instructions about cognitive style. More reals who received the constructive rather than the concentrative instructions reported complete blindness; a similar number of simulators who received the different instructions reported complete blindness. Moreover, reals who received the constructive instruction reported a more rapidly developed belief in their blindness. The findings are discussed in terms of the relevance of cognitive style to subjects' reports of hypnotic blindness, and the possibility is considered that both reports of and belief in hypnotic blindness are determined in part by cognitive style.

Adult↗

PubMed1989

Hypnotic blindness: a behavioral and experiential analysis.

This research examined the influence of visual information on a decision task that subjects were administered during hypnotically suggested blindness. Real, hypnotizable subjects and simulating, unhypnotizable subjects were tested in two experiments. Experiment 1 focused on behavioral responses, and Experiment 2 focused on experiential reactions. In both experiments, the findings indicated that the behavioral responses of reals were influenced by visual information despite their reported blindness. The behavioral responses of reals and simulators were essentially similar. The experiential data in Experiment 2 provided information about the phenomenal nature of subjects' reported blindness. The experimental reactions of reals and simulators were essentially different. The research is discussed in terms of the issues that need to be considered in the development of a model of hypnotic blindness.

Adult↗

PubMed1989

Visual conversion disorder: a case analysis of the influence of visual information.

We examined the influence of visual information on a decision task that was administered to an individual with monocular visual conversion disorder. Findings indicated that his performance was influenced by the visual information and by motivation instructions. The findings are discussed in terms of a model of hysterical blindness that recognizes the interplay of cognitive and motivational processes.

Adult↗