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G Bryan Young

Publications and source records attributed to G Bryan Young.

24 records · Page 2Linked to original sources

Progress in clinical neurosciences: sepsis-associated encephalopathy: evolving concepts.

Systemic sepsis commonly produces brain dysfunction, sepsis-associated encephalopathy, which can vary from a transient, reversible encephalopathy to irreversible brain damage. The encephalopathy in the acute phase clinically resembles many metabolic encephalopathies: a diffuse disturbance in cerebral function with sparing of the brain stem. The severity of the encephalopathy, as reflected in progressive EEG abnormalities, often precedes then parallels dysfunction in other organs. Recent research has revealed a number of potentially important, non-mutually exclusive, mechanisms that have therapeutic implications.

Animals↗

An epilepsy questionnaire study of knowledge and attitudes in Canadian college students.

PURPOSE: Controversy exists about the relation of societal knowledge and attitudes regarding epilepsy. We conducted a survey to examine knowledge and attitudes, to note gender and occupational influences, and to examine the effect of an informational brochure. METHODS: We administered a standardized questionnaire that noted demographics and examined knowledge and attitudes regarding epilepsy and persons with epilepsy, respectively, to a wide variety of Canadian college students. In a separate class we gave every other student a brochure regarding epilepsy and then administered the questionnaire to both the naïve and brochure-exposed students. RESULTS: Knowledge was patchy and weakest for the approximate prevalence of epilepsy in the population, hereditary epilepsy and several other etiologies, recognition of nonconvulsive seizures as a type of epilepsy, and knowledge of antiepileptic drug-induced teratogenicity. In contrast, attitudes were more uniformly favorable. However, 11 and 14%, respectively, showed negative bias against persons with epilepsy having children and equal opportunity for occupational employment. Women were slightly but significantly more tolerant than men. The brochure-exposed group showed better knowledge but equivalent attitudes compared with the naïve group. CONCLUSIONS: Results compare favorably with surveys in other countries. Although knowledge was patchy, it could be easily improved on with an educational brochure. Attitudes were positive but show some discrepancies from knowledge and a gender effect.

Adult↗

Prognostic determination in anoxic-ischemic and traumatic encephalopathies.

Clinical assessment of the unresponsive patient is limited to examination of brainstem reflexes and simple motor responses to stimulation. It is thus difficult, especially if brainstem functions are intact, to give early, accurate prognostic information on comatose patients. Neurochemical tests and imaging have not been validated and have significant limitations. Electrophysiologic investigations provide a window into cerebral function and are tested, clinically useful, safe, available, and inexpensive. Persistent abnormalities of brainstem auditory evoked potentials and short-latency somatosensory evoked potentials reliably indicate the likelihood permanent vegetative state or death. Conversely, the presence of "cognitive" event-related brain potentials (e.g., P300 and mismatch negativity) reflects the functional integrity of higher-level information processing and, therefore, the likelihood of capacity for cognition. A combined clinical and electrophysiologic approach provides optimal prediction of outcome and level of disability.

Brain Injuries↗