Sciatica caused by perifibrosis of the sciatic nerve.
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Biomedical subjects
Publications and source records attributed to I Søgaard.
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An epidemic spread of Acinetobacter calcoaceticus var. anitratus in two neurosurgical wards is described retrospectively and prospectively using electronic data processing. Isolation of the species from sputum preceded the isolation from CSF by 1/2-1 year. Control measures directed against spread by air and indirect contact controlled the epidemic. Reexamination of 20 selected strains from the epidemic revealed two distinct resistance patterns.
Five patients suffering from suprascapular nerve compression syndrome were treated by surgical decompression of the nerve. The syndrome is described and the surgical treatment is outlined. The diagnostic necessity for electromyography is stressed as is the intraoperative evaluation of the conductive obstacle by use of electrostimulation.
Twenty-six patient treated for neurogenic intermittent claudication (NIC) have been examined on an average of 25.5 months after a decompression operation. Twenty-two of the patients were either considerably better (15 patients) or completely free of symptoms (7 patients). Pre-operatively two thirds of the patients were able to walk less than a 100 metres. Post-operatively 12 of the patients had an unlimited walking distance.
A case is presented of compression of the sciatic nerve at the back of the thigh. For 3 years after a minor injury, this patient has suffered from pain and paresthesia in the left leg. There were no neurological abnormalities; electromyography was performed twice and showed normal muscular activity. At operation the nerve was found to be rotated and compressed by a tough band of connective tissue. Postoperatively, all discomfort disappeared, and 5 months later the patient remained free of pain.
Infiltration with local anaesthetics with addition of adrenaline or noradrenaline has been used since 1910 prior to skin incision for craniotomy. In a controlled series of patients scheduled for intracranial operations, systemic blood pressure was measured intra-arterially after infiltration with 15-20 ml 0.5% lignocaine with nonradrenaline 1 mu gr/ml. A marked increase in systemic blood pressure was seen (125% of values prior to infiltration). In a control series, where saline was injected, a slight fall in blood pressure was registered (p smaller than 0.01). As hypertensive episodes increase intracranial pressure in patients with impaired cerebral autoregulation, or promote the risk of haemorrhage in aneurysm surgery, this technique is considered a hazard to patients undergoing intracranial operations.
In a family of 14 brothers and sisters, 3 cases of occlusive disease of the large intracranial vessels (Moya Moya) were found. Each of the three had one or more cerebrovascular attacks and a typical cerebral angiogram. Eight other members of the family had severe headaches. Angiography was carried out in three of these with normal findings.