CUTE compression of the spinal cord or cauda equina caused by spontaneous epidural hematoma is relatively rare. Sadka 31 reviewed 1~ published cases and added two more. Schultz, et al., 32 Lougheed and Hoffmany and L6poire, et al., 2~ brought the total to 46 cases, to which we are now adding three cases. Case 1. A 79-year-old white woman was admitted to the San Jose Hospital on January ~8, 1961. At 4:00 a.m. that morning she had awakened with severe pain in the thoraco-lumbar region, which was followed by bowel incontinence. A few minutes later her right leg became so weak that she could not walk. Before the sudden onset of her symptoms the patient had been active despite mild cardiac insufficiency and diabetes mellitus. Examination. The bladder was distended to the umbilicus and catheterization was necessary. Neurological exanfination January g9, approximately 30 hours after onset of symptoms, revealed flaccid paralysis of both legs, with areflexia, and loss of all sensory perception below the level of T-10 bilaterally. Spinal puncture revealed a pressure of 100 mm of water, xanthochromic fluid, and a protein content of s mg%. X-rays of the lumbar spine were normal except for osteoporosis. Myelography revealed a complete block at the level of the disc space between T-11 and T-I~. Operation. Laminectomy was performed approximately 83 hours after onset of symptoms and 1~ hours after onset of paraplegia (}t.N.L.
Il;lectro-encephalographic recording from electrodes on the scalp has given valuable information in the diagnosis and treatment of a number of neurologic disorders, such as brain injuries, brain tumors and epilepsy. However, the results have been rather disappointing with respect to mental disorders.On the other hand, recording from the depths of the brain by means of intracerebral microelectrodes has given valuable diagnostic, therapeutic and neurophysiologic information in patients suffering from mental disorders. It should be pointed out immediately that such examinations have been carried out only in connection with operations on the brain. The results of such recordings frequently have made it possible to limit substantially the final surgical operation. T E C H N I COur technic has been described in an earlier communication ( 1 ) .However, in the last year, the number of contacts has been increased at the same time as the over-all diameter of the electrodes has been decreased 1)y the utilization of finer wires. A t the present, 46-gauge wire (37.5 microns in diameter) is utilized. The wires are only one eighth the size of those used a year ago. The location of the electrodes i s checked roentgenographically.
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