نتایج جستجو برای: loss of consciousness
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BACKGROUND The Narcotrend index (MonitorTechnik, Bad Bramstedt, Germany) is a dimensionless number between 0 and 100 that is calculated from the electroencephalogram and inversely correlates with depth of hypnosis. The current study evaluates the capability of the Narcotrend to separate awareness from unconsciousness at the transition between these levels. METHODS Electroencephalographic reco...
The mechanisms underlying anesthesia-induced loss of consciousness remain a matter of debate. Recent electrophysiological reports suggest that while initial propofol infusion provokes an increase in fast rhythms (from beta to gamma range), slow activity (from delta to alpha range) rises selectively during loss of consciousness. Dynamic causal modeling was used to investigate the neural mechanis...
Initial assessment • At any stage, including initial presentation, if the person has sustained an injury or has not made a full recovery of consciousness, or if transient loss of consciousness is secondary to a condition that needs immediate action, use clinical judgment to determine appropriate management and the urgency of treatment. • Ask the person with suspected transient loss of conscious...
THE mechanism by which general anesthetics prevent consciousness remains unknown largely because the mechanism by which brain physiology produces consciousness is unexplained. But the two mysteries seem to share a critical feature—both consciousness and actions of anesthetic gases are mediated through extremely weak London forces (a type of van der Waals force) acting in hydrophobic pockets wit...
Cerebral aneurysms are of clinical importance regarding their fetal outcomes. The prevalence has been estimated between 2.4% and 6.8% of outopsies. Regarding the epidemiological differences of populations, the present cross-sectional study was undertaken to assess the angiographic findings of ruptured aneurysms. 50 patients with the diagnosis of ruptured cerebral aneurysms were admitt...
Loss of consciousness often is considered an important variable when estimating head injury severity. The purpose of this study was to determine if brief loss of consciousness had any effect on the neuropsychological test performance of patients in acute recovery from an uncomplicated mild head injury (N = 195). Three groups of 65 patients were given a brief battery of neuropsychological tests ...
Au unknown 55 years old man with loss of consciousness, bradypnea, cyanosis and miotic pupil was referred to hospital from a bus terminal. Neurological examination revealed no lateralized sign and acrocyanosis was positive. A short time after administration of hypertonic glucose and naloxone, he had seizure, hypotension and apnea, therefore, he underwent intubation and mechanical ventilation. P...
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