Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society
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J Clin Neurophysiol · Apr 2010
The effectiveness of an interdisciplinary approach to EEG instruction for residents(r).
Expanding EEG use calls for education during postgraduate training. We performed a study to see whether an innovative, interdisciplinary approach to EEG instruction for residents achieved curriculum goals of increasing knowledge of EEG use and interpretation. A 45-minute EEG educational module was developed by a clinical neurophysiologist and a neurocritical care anesthesiologist. ⋯ Nine of 10 residents completed the study. Assessment tool scores increased from a mean of 12.00 +/- 1.87 before the educational module to 19.67 +/- 2.06 (P < 0.001) after the educational module. This innovative, collaborative approach for EEG instruction of residents using the expertise of a clinical neurophysiologist met the curriculum goals after a 45-minute educational module as measured by the study assessment tool.
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J Clin Neurophysiol · Apr 2010
Relationship between regional cerebral blood flow and electrocorticographic activities under sevoflurane and isoflurane anesthesia.
The aims of this study are (1) to assess the effects of volatile anesthetics on regional cerebral blood flow (rCBF) and electrocorticography (ECoG), and (2) to investigate the relationship between rCBF and ECoG influenced by volatile anesthetics. The authors measured rCBF using laser Doppler flowmetry and ECoG simultaneously and continuously from the same cortex during craniotomy, using the specially arranged probe. Patients received intravenous anesthetics with nitrous oxide until craniotomy, and after opening of dura, volatile anesthetic, either isoflurane or sevoflurane, was started and was gradually increased for the measurement. ⋯ In 12 cases of the isoflurane group, no apparent rCBF and ECoG changes were seen, except a case with decreased rCBF and slow waves. This is the first report of simultaneous recordings of regional CBF and neuronal activity under general anesthesia. During sevoflurane and isoflurane anesthesia <2.5 minimum alveolar anesthetic concentration, rCBF is affected by ECoG activities rather than pharmacologic action of inhalational anesthetics.
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J Clin Neurophysiol · Feb 2010
Parameters and grading of evoked potentials: prediction of unfavorable outcome in patients with severe stroke.
To explore the prognostic accuracy for unfavorable outcome with short-latency somatosensory evoked potential (SLSEP) and brainstem auditory evoked potential (BAEP) in patients with severe stroke, 100 acute severe supratentorial stroke patients [Glasgow Coma Scale, (GCS)
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J Clin Neurophysiol · Oct 2009
Reliability of superficial peroneal, sural, and medial plantar nerve conduction studies: analysis of statistical methods.
The reliability of medial plantar, sural, and superficial peroneal nerve conduction studies (NCS) has not been widely studied. These nerves are usually involved in distal sensory neuropathies and their serial study is relevant in the clinical setting. ⋯ Although the Bland-Altman method confirmed a good intra- and interrater reliability of the studied nerves, ICC analyses showed mixed results. These statistical approaches are complementary, and each one has advantages and disadvantages that must be considered in their application and interpretation.