Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1996-8-29
pubmed:abstractText
During isoflurane-induced electroencephalographic (EEG) suppression, external stimuli evoke high-amplitude cortical responses (bursts). We tested whether bursts evoked by somatosensory stimuli would reliably distinguish intact somatosensory pathways from pathways in which peripheral nerve conduction had been blocked by local anesthetic. Ten subjects were anesthetized with isoflurane until burst suppression was achieved. During EEG suppression, they were given somatosensory stimulation, consisting of 3-s episodes of 60 electric pulses (20 mA, 0.2 ms), to the tips of the left and right fifth fingers alternately for 10 min. One finger was then anesthetized at the base of the proximal phalanx with prilocaine and the other finger was injected with saline in a double-blind manner. The stimulation was continued for 20 min. In nine patients, the disappearance of bursts in response to stimuli applied to the anesthetized finger clearly indicated the side of the conduction block. After the injection of local anesthetic, there was a predominance of offset bursts over onset bursts in response to stimuli applied to the anesthetized finger (P < 0.05) before the responses disappeared. We conclude that evoked bursts merit further investigation for potential use in monitoring the integrity of neural pathways.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0003-2999
pubmed:author
pubmed:issnType
Print
pubmed:volume
83
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
354-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:8694318-Anesthesia, Inhalation, pubmed-meshheading:8694318-Anesthetics, Inhalation, pubmed-meshheading:8694318-Anesthetics, Local, pubmed-meshheading:8694318-Double-Blind Method, pubmed-meshheading:8694318-Electric Stimulation, pubmed-meshheading:8694318-Electroencephalography, pubmed-meshheading:8694318-Evoked Potentials, Somatosensory, pubmed-meshheading:8694318-Female, pubmed-meshheading:8694318-Fingers, pubmed-meshheading:8694318-Humans, pubmed-meshheading:8694318-Isoflurane, pubmed-meshheading:8694318-Monitoring, Intraoperative, pubmed-meshheading:8694318-Neural Conduction, pubmed-meshheading:8694318-Neural Pathways, pubmed-meshheading:8694318-Peripheral Nerves, pubmed-meshheading:8694318-Placebos, pubmed-meshheading:8694318-Prilocaine, pubmed-meshheading:8694318-Somatosensory Cortex
pubmed:year
1996
pubmed:articleTitle
Monitoring the integrity of somatosensory pathways with evoked electroencephalographic bursts.
pubmed:affiliation
Department of Physiology, Tampere Brain Research Center, Tampere University Medical School, Finland.
pubmed:publicationType
Journal Article, Clinical Trial, Randomized Controlled Trial, Research Support, Non-U.S. Gov't