1/95. A case of reflex sympathetic dystrophy (complex regional pain syndrome, type I) resolved by cerebral contusion.We present a case of refractory reflex sympathetic dystrophy (RSD) (complex regional pain syndrome, type I) whose symptoms (ongoing pain, allodynia, hyperhydrosis and temperature abnormalities) were resolved after the patient suffered a traumatic cerebral contusion in the left temporal lobe, which caused no neurological deficit. This case suggests that symptoms of some RSD patients may largely sustained by a complex network involving the brain.- - - - - - - - - - ranking = 1keywords = brain (Clic here for more details about this article) |
2/95. Sinistrad mirror writing and reading after brain concussion in a bi-systemic (oriento-occidental) polyglot.The problem of mirror writing and reading is discussed in the light of a clinical case, where this disturbance appeared after an apparently minor head injury. Mirror writing and reading in this polyglot individual affected only the sinistrad (Hebrew) writing and reading system, leaving the dextrad (Latin) system unimpaired. This disturbance appeared together with dyscalculia, left-right disorientation and slight temporal confusion, suggestive of parieto-occipital lobe pathology. The clinical picture also showed apparently "conversional" traits, such as are sometimes seen in incomplete parietal lobe syndromes. The relevant literature is reviewed and patho-physiological mechanisms of mirror reversal are discussed.- - - - - - - - - - ranking = 4.0340793381039keywords = brain, stem (Clic here for more details about this article) |
3/95. Minor traumatic brain injury: review of clinical data and appropriate evaluation and treatment.The clinical entity of minor traumatic brain injury (MTBI) is secondary to signs and symptoms encompassing neuropathological, neurochemical, neurobehavioral, neuropsychological and behavioral deficits. The patients who suffer this disorder are often given little help, medically, secondary to issues regarding the perceived reality of the disorder. A few individuals deny the existence of MTBI. Some believe the symptom complex to be strictly functional, while others believe that spontaneous recovery will occur and no treatment is necessary. When discussing traumatic brain injury the descriptors, "mild, moderate, and severe," are used to describe the severity of the acute injury. These labels do not describe the severity of the sequelae nor are they indicative of the intensity of specific treatment. A clear understanding of MTBI, its sequelae and necessary treatment is imperative to insure timely intervention. Delay or lack of early intervention appears to be responsible for "persistent sequelae" in MTBI. This paper will describe various aspects of the etiology of MTBI, with recommended evaluation and treatment guidelines. A functional assessment scale specifically for persons with MTBI is also presented. Several case histories are included for illustration purposes.- - - - - - - - - - ranking = 6keywords = brain (Clic here for more details about this article) |
4/95. Death due to concussion and alcohol.We encountered 5 deaths following blunt trauma to the face and head in which the injuries were predominantly soft tissue in nature with absence of skull fractures, intracranial bleeding, or detectable injury to the brain. All individuals were intoxicated, with blood ethanol levels ranging from 0.22 to 0.33 g/dl. We feel that in these deaths, ethanol augmentation of the effects of concussive brain injury, with resultant posttraumatic apnea, was the mechanism of death.- - - - - - - - - - ranking = 2keywords = brain (Clic here for more details about this article) |
5/95. Multiple fregoli delusions after traumatic brain injury.A 61 year old man after a traumatic brain injury resulting in right frontal and left temporoparietal contusions developed florid Fregoli-type misidentifications. Extensive neuropsychological testing demonstrated significant deficits in executive and memory functions. The patient's neuropsychological profile closely resembled that seen in previously reported patients with capgras syndrome. Our findings are consistent with the hypothesis that a combination of executive and memory deficits may account for cases of delusional misidentification associated with brain lesions. However, the form which the delusion takes may be influenced by other factors including motivation.- - - - - - - - - - ranking = 6keywords = brain (Clic here for more details about this article) |
6/95. brain stem contusion due to tentorial coup injury: case report and pathomechanical analysis from normal cadavers.This report is in two parts. First, a case report on a 20-year-old man with a localized brain stem contusion. Second, in order to elucidate the mechanism of this injury, an anatomical study was performed. Ten cadaver heads were analysed to reveal the variations of spatial anatomy around the tentorial incisura. The lateral tentorial incisura (lateral to brain stem) was situated at the level of pontomesencephalic junction and nearest to the brain stem along its course. The shortest distance between them averaged 1.0 mm (0-4 mm). Based on these findings, primary brain stem injury caused by tentorial incisura occurs at its lateral portion due to the shortest distance to the brain stem and near the level of pontomesencephalic junction. In patients with a tentorial incisura closely related to or touching the brain stem, tentorial coup injury to the brain stem may occur even with a relatively minor injury. In our case, repeated CT and MRI proved that the location of contusion was at the pontomesencephalic junction, coinciding with the level of the tentorial edge. The injury started at the surface of brain stem. The tentorial edge was close to brain stem in this case. These radiological findings support the hypothesis that the brain stem contusion was caused by a tentorial coup injury.- - - - - - - - - - ranking = 14.100365891767keywords = brain, brain stem, stem (Clic here for more details about this article) |
7/95. When instructions fail. The effects of stimulus control training on brain injury survivors' attending and reporting during hearing screenings.Bedside hearing screenings are routinely conducted by speech and language pathologists for brain injury survivors during rehabilitation. Cognitive deficits resulting from brain injury, however, may interfere with obtaining estimates of auditory thresholds. Poor comprehension or attention deficits often compromise patient abilities to follow procedural instructions. This article describes the effects of jointly applying behavioral methods and psychophysical methods to improve two severely brain-injured survivors' attending and reporting on auditory test stimuli presentation. Treatment consisted of stimulus control training that involved differentially reinforcing responding in the presence and absence of an auditory test tone. Subsequent hearing screenings were conducted with novel auditory test tones and a common titration procedure. Results showed that prior stimulus control training improved attending and reporting such that hearing screenings were conducted and estimates of auditory thresholds were obtained.- - - - - - - - - - ranking = 7keywords = brain (Clic here for more details about this article) |
8/95. head injury, dissociation and the Ganser syndrome.OBJECTIVE: To describe the clinical characteristics and psychiatric correlates of the Ganser syndrome following mild traumatic brain injury (TBI). METHOD: A retrospective chart review of patients with mild TBI assessed in a tertiary care outpatient clinic. RESULTS: Of 513 patients reviewed in a 1 year period, four subjects with a diagnosis of Ganser syndrome, with the hallmark syndrome of approximate answers ('vorbeigehen') were identified. In three of these patients, symptoms of Acute Stress Disorder (ASD) and/or Post-traumatic Stress Disorder (PTSD) were found. Only one patient was pursuing litigation. CONCLUSIONS: While no epidemiologic conclusions can be drawn from the data, clinicians should, nevertheless, be alert to the possibility of patients presenting with Ganser syndrome following TBI. The findings are discussed in the light of data linking the syndrome to dissociative and post-traumatic stress related disorders.- - - - - - - - - - ranking = 1keywords = brain (Clic here for more details about this article) |
9/95. Concussive convulsions: emergency department assessment and management of a frequently misunderstood entity.Immediate concussive convulsions are an unusual but dramatic sequela to head injuries. Previously believed to be an epileptic phenomenon, they are now thought to be a brief traumatic functional decerebration that results from loss of cortical inhibition. With concussive convulsions generally occurring within seconds of head impact and lasting up to several minutes, patients are initially in a tonic phase, followed by a clonic convulsion. A postictal phase is generally brief if it occurs at all with these episodes. patients with isolated concussive convulsions have no evidence of structural brain injury as assessed with neuroimaging studies or physical examination. Neuropsychological testing often demonstrates transient cortical dysfunction consistent with the concussive episode. The long-term outcome for patients with isolated concussive convulsion is universally good, with no long-term neurologic sequelae and no increased incidence of early or late posttraumatic epilepsy. Emergency department management should focus on evaluation of the associated concussive injury. The concussive convulsion requires no specific therapy, and antiepileptic medication is not indicated.- - - - - - - - - - ranking = 1keywords = brain (Clic here for more details about this article) |
10/95. Case report of sudden death after a blow to the back of the neck.A 13-year-old girl experienced a fall during gym class that caused immediate unresponsiveness and death. The lone witness reported that the decedent lost her balance as she approached a hurdle and fell, striking her head on a crossbar of the hurdle near the ground. autopsy revealed no external injury. Internal injury that could be demonstrated anatomically was confined to a contusion within the right semicapitis muscle at the base of the skull. In the absence of an anatomic cause of death, possible explanations of the death include a cardiac dysrhythmia, a vasovagal stimulus, and diffuse axonal injury caused by a concussive force to the junction of the medulla and spinal cord. Animal studies have shown that severe concussion can cause death via profound autonomic dysfunction without leaving anatomic evidence of injury, and that the essential component of concussion is an element of rotational injury to the brain. The authors believe that the blow to the neck caused this death by the transmission of a concussive force through the reticular activating system. The prompt work of police in distinguishing the lone witness from several people in the area who thought they knew what had happened was essential for diagnosis. On reaching our conclusions, the authors notified first the family, then the superintendent of the school system, and finally the news media. The authors told each party in turn that they would be contacting the others.- - - - - - - - - - ranking = 1.011359779368keywords = brain, stem (Clic here for more details about this article) |
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