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Biomedical subjects

S Duckett

Publications and source records attributed to S Duckett.

115 records · Page 7Linked to original sources
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Hospital role delineation: the technology and the politics.

Regulated health systems are under increasing pressure to improve the efficiency of their hospital provision. One approach is to have more coordinated hospital provision through hospital role delineation. This short communication proposes the use of Diagnosis Related Groups as part of the role delineation process. However, the role delineation process is not solely a technical one: it requires a blend of technical and political decisions. Political aspects of the role delineation process are also reviewed.

Canada↗
PubMedDate not supplied

Tellurium-induced myelinopathy in adult rats.

Tellurium is known to induce a neuropathy in young rats but not in adult rats. In the present study adult rats were fed a diet containing 1.25% tellurium every day for 30 days. By the end of this period, the rats moved with difficulty but did not show paralysis. Study of teased nerve fiber preparations in conjunction with light and electron microscopy revealed myelin abnormalities consisting of myelin bubbling, segmental demyelination, and remyelination. In some animals, these abnormalities had a patchy distribution, affecting several adjoining nerve fibers in sciatic nerves, brachial plexus, and spinal roots. The intramyelinic edema sometimes was associated with splitting of the axons.

Animals↗
PubMedDate not supplied

Prevention of cerebral infarction in the monkey by omental transposition to the brain.

The intact omentum of 13 monkeys was lengthened, placed subcutaneously, and laid on the left cerebral hemisphere prior to occluding the left middle cerebral artery. Two of these 13 monkeys developed left cerebral infarct and a right hemiparesis. Nine other monkeys had their left middle cerebral artery occluded without omental protection. All of these 9 developed a left cerebral infarct and 8 of them a right hemiparesis. Intact omentum may prevent a cerebral infarction when placed on the brain prior to MCA occlusion.

Animals↗
PubMedDate not supplied

An unusual case of sundown syndrome subsequent to a traumatic head injury.

An unusual case of sundown syndrome is here reported, in which a bilingual patient would involuntarily change languages at sunset. Numerous theories have been advanced in attempting to account for sundowning. Cameron has suggested that nocturnal delirium was based on an inability to maintain a spatial image without the assistance of repeated visualization. Kral and Wolanin and Phillips have argued for a more psychogenic account, by stating that psychosocial stressors may, in concert with impaired cognitive functioning, account for sundowning. The present case concerns a 42-year-old white male who in January 1989 suffered a closed head injury. A thorough personal history as well as a detailed examination of the patient's daily activities allowed us to account for the unusual manner in which the sundowning manifested itself. The uniqueness of this case allows us to underscore both the psychological as well as environmental and neurological factors involved in sundowning. Thus, we have as a consequence been able to synthesize the seemingly disparate accounts of both Cameron and more recent published literature.

Adult↗
PubMedDate not supplied

Managing myoclonus secondary to anoxic encephalopathy through EMG biofeedback.

Biofeedback has traditionally been used in the context of relaxation therapy along with stress management. Some recent studies have looked to extend the applicability of biofeedback by using it as a didactic tool for neuromotor rehabilitation. The present case is one in which an anoxic head-injury patient was unable to participate in transfers owing to a severe myoclonic condition. The patient was trained using an autogenic relaxation procedure along with EMG biofeedback modality to reduce the myoclonus and therefore participate actively with stand pivot transfers.

Aged↗