Vaclav Synek

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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)
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)
Using pneumoencephalography and computerized axial tomography (EMI scanning) Polaroid pictures, the relationship between ventricular size and cerebral size was investigated in 35 patients. Evans' index was used for pneumoencephalograms, and planimetric measurement of the ventricular and cerebral cross-sectional areas was used for EMI scanning. The(More)
Normative data for somatosensory evoked potentials (SEPs) after stimulation of digital nerves from the first, third and fifth digits, which reach the spinal cord through C6, C7 and C8 roots are presented in 20 normal adults. SEP peak latencies and amplitudes are indicated for Erb's point, the level of the seventh and second cervical vertebrae and(More)
A technique for recording somatosensory evoked potentials after stimulation of the patellar branch of the saphenous nerve is described and the results from 11 normal subjects and from two patients with intraabdominal femoral nerve injuries are presented. One patients developed a nerve lesion after an abdominal surgical procedure and the second suffered a(More)
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)
The pyriformis syndrome is a rare entrapment neuropathy in which the sciatic nerve is compromised by the pyriformis muscle or other local structures. It usually presents with sciatic pain and hypoaesthesia and a limp caused by weakness of the gluteus maximus muscle. Peroneal nerve innervated muscles and hamstrings are also usually affected. The diagnosis(More)
Cortical and lumbar somatosensory evoked potentials (SEPs) were recorded following unilateral stimulation of the tibial, peroneal and sural nerves in 20 normal adults. The active cortical electrode (Cz) was referred to either a cephalic (mid-forehead, contralateral central scalp, linked ears) or a non-cephalic (contralateral shoulder) site. The(More)
Somatosensory evoked potential (SEP) investigations in 18 patients with lower limb lesions are summarized. Seven patients had problems involving the lateral femoral cutaneous nerve, four the femoral nerve, and seven the sciatic nerve. All lesions were unilateral. SEP techniques were accurate in meralgia paresthetica, and all five patients with demonstrable(More)