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Hydrogen sulfide (H2S) poisoning involves a risk of hypoxic brain damage. Six patients who lost consciousness due to H2S poisoning are described. The symptoms varied from anosmia in the patient with the shortest but highest exposure to delayed neurological deterioration in the patient with the longest exposure. The two patients with the most serious(More)
Vibration sensitivity thresholds were studied in 12 healthy volunteers using 25, 50, 100 and 250 s-1 stimulus frequencies from an instrument with automated and manual modes ('Vibra Mk II'). For the automated mode, a forced choice principle was adopted. All measurements were performed from both the knuckle of the IInd metacarpophalangeal joint and the medial(More)
In Norway's only viscose rayon plant, carbon disulfide (CS2) concentrations in ambient air usually were between 30 and 50 mg/m3 during the first 23 years of production. From 1970/1971 until the factory was closed in 1982, corresponding values were 10-25 mg/m3. Through all of these years, high peak exposures of CS2 and H2S occurred. In 1986, 16 of the 24 men(More)
Sixteen males, formerly exposed to carbon disulfide (CS2) for at least 10 years (mean 20 years), were administered a neurological examination, cerebral computerized tomography (CT), regional cerebral blood flow (rCBF) examination and neuropsychological examination. The clinical neurological examination revealed abnormalities in 15; cerebral CT showed signs(More)
A double blind study was carried out to evaluate safety, tolerability and visualization quality of the non-ionic contrast medium Iohexol compared to Meglumine-Ca-Metrizoate (Isopaque Cerebral) for cerebral angiography. The two contrast media were found equal in most respects. A slight increase in systolic blood pressure following Meglumine-Ca-Metrizoate(More)
An open study with iohexol (Omnipaque) in cervical myelography has been performed in 20 patients to evaluate the properties and neurotoxicity of this new water soluble contrast medium. The image quality was good (30%) or excellent (70%) in all cases. The frequency of headache was 25%. No EEG changes were severe and the total frequency was 20%. We conclude(More)
Thirty patients underwent functional cervical myelography, i.e. radiographs in the lateral view were obtained in extension as well as in flexion of the neck. Sagittal tomography was performed in both positions. Widening of the subarachnoid space and decreased sagittal diameter of the spinal cord due to shortening were demonstrated in the lateral view in(More)
The results of 25 functional lumbar myelographies with iohexol are reported. The image quality was good or excellent in all. The side effects were mostly mild and showed the same frequency as reported in lumbar and thoracic myelographies with metrizamide. A slight increase in the frequency of side effects was found in 13 patients with spinal repuncture 6 or(More)
A randomized double blind cross-over study with iohexol (Omnipaque) and meglumine-Ca-metrizoate (Isopaque cerebral) was performed to answer questions concerning subjective side effects and tolerability that arrose from a double blind parallel study with the same two media. The cross-over study design, with injection of the contrast media under identical(More)
A randomized double blind study with iohexol (Omnipaque) and metrizamide (Amipaque) in cervical myelography was performed in 50 patients, 29 with iohexol and 21 with metrizamide. The myelographies were performed either with lumbar or with C1–C2 puncture in about equal groups, using 300 mg I/ml and 240 mg I/ml of the contrast media respectively. The image(More)