V M Synek

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  • V M Synek
  • 1988
Because of the paucity in the English literature of a detailed and universally accepted EEG grading scale relating to survival after diffuse traumatic and anoxic brain insults, prognostically oriented EEG patterns including recently described abnormalities are presented and discussed. The significance of these patterns may also apply in cases of coma of(More)
The prognostic validity for survival of a recently devised EEG grading scale was tested in anoxic and post-traumatic coma. This scale divides EEG in coma into five major grades and ten subdivisions with emphasis on the presence of dominant activities, their amplitude, persistence, distribution and reactivity. In this scale, patterns previously not(More)
In 12 patients with traumatic lesions of brachial plexus, we studied somatosensory evoked potentials by stimulation of median, radial, and ulnar nerves at the wrist and by recording at the arm, Erb point, cervical spinal cord, and contralateral cortex. Results after median nerve stimulation in patients with upper trunk lesions were normal. Patients with(More)
The two types of upper limb somatosensory evoked potential abnormality observed in nine patients with syringomyelia were reduced amplitude or absent cervical potentials and an abnormal central conduction time. Although this pattern of abnormalities resembles that observed in other intrinsic spinal cord lesions, it differs from peripheral nerve diseases and(More)
The EEG has long been established as an important laboratory test when assessing cerebral function in comatose states. During the last three decades, several grading scales regarding severity of the EEG abnormality in coma have been suggested to increase the prognostic power of the EEG for survival. Their main limitation was, that the majority of EEG(More)
  • V M Synek
  • 1990
The validity of a recently published EEG grading scale applied to patients with acute head injuries has been investigated. This scale is based on 15 individual grades and subdivisions and 3 major groups: 4 patterns are benign regarding survival, 4 are of uncertain significance and 7 patterns are prognostically malignant. The evaluation was performed in 90(More)
Abnormally delayed and attenuated short latency somatosensory evoked potentials after electrical stimulation in the distribution of painful dysaesthesias after peripheral nerve lesions are reported in 4 selected patients with lesions in very proximal parts of the peripheral nerves. These included painful spondylopathic cervical radiculopathy, meralgia(More)
  • V M Synek
  • 1983
A technique for recording somatosensory evoked potentials using stimulation of musculocutaneous sensory nerve fibers proximal to the wrist has been used in 10 normal subjects and in 8 patients with traumatic lesions of proximal parts of the brachial plexus. The technique gave satisfactory evoked potentials in all normal subjects and provided useful(More)