Stereotactic and functional neurosurgery
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Stereotact Funct Neurosurg · Jan 2001
Intraoperative microelectrode recording equipment: what features are necessary?
Intraoperative neurophysiologic methods for localizing targets deep in the brain require the use of specialized monitoring and recording equipment, including stimulators, neurophysiologic recording devices, and image manipulation tools. When using microelectrode recording devices there are some specifications that are more important than others, such as signal-to-noise ratios and amplifier impedance. As more companies develop tools to be used in the operating room, the end users have more choices. Some of the more important specifications are discussed and a comparison is made of the five major brands on the market today.
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Stereotact Funct Neurosurg · Jan 2001
Comparative StudySpinal cord stimulation prevents the effects of combined experimental ischemic and traumatic brain injury. An MR study.
Spinal cord stimulation (SCS) interferes with cerebral blood flow (CBF). In this paper we try to evaluate the possible preventing effect of SCS in an animal model of combined ischemic and traumatic injury. ⋯ MR examination was performed in all the animals at the end of the experiments. Compared to the control group none but one of the SCS showed lesional pattern far from the craniectomy suggesting a 'preventing' effect of SCS on the secondary damage associated with our model combined ischemic and traumatic brain injury.
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Stereotact Funct Neurosurg · Jan 2001
Biography Historical ArticleDr. Manuel Velasco Suarez. In memoriam.
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Stereotact Funct Neurosurg · Jan 2001
Comparative StudyMicrovascular decompression for hemifacial spasm: a long-term follow-up of 1,169 consecutive cases.
We analyzed the records of 1,169 patients with hemifacial spasm (HFS) who underwent microvascular decompression (MVD) and were followed up for more than 6 months from January 1987. The mean follow-up duration was 23.8 months (6-145 months). Excellent surgical outcome was obtained in 90.5% and good in 4.5%, giving an overall success rate of 95.0%. ⋯ Permanent facial weakness and hearing impairment were 1.4% and 2.3%, respectively. There were no anatomical differences at the root entry zone (REZ) and significant differences of surgical outcome in young HFS (34 patients). Factors such as type of offender, severity of compression on the facial nerve root, and the degree of decompression of the REZ on postoperative MRI did not correlate with surgical outcome.
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Stereotact Funct Neurosurg · Jan 2000
ReviewCerebral protection before, during and after neurosurgical procedures.
Not only the pathology but also the neurosurgical procedure itself can lead to an impairment of cerebral structures. This may cause neurological symptoms like confusion, disorientation or cognitive deficits which have hardly been noticed until now. ⋯ As an example of the effectiveness, based on our own experiences and international trials, two different medical drugs, Nimodipine and Cerebrolysin, are presented. In conclusion one has to realize that nowadays neurosurgeons have to focus their interest more and more to neuroprotective adjuvant treatment possibilities.