Arch Neurol Chicago
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Arch Neurol Chicago · Oct 1990
Apneic oxygenation in apnea tests for brain death. A controlled trial.
We performed a prospective controlled study of apneic oxygenation on 15 patients undergoing apnea tests for brain death. All patients were preoxygenated with 100% oxygen at existing respirator settings. During the 10-minute apnea tests, nine patients were given continuous apneic oxygenation by tracheal cannula. ⋯ Many neurologists perform apnea tests with no oxygenation or with preoxygenation alone. This is the first prospective controlled study (to our knowledge) of apneic oxygenation; it shows that preoxygenation alone does not prevent hypoxia during apnea tests for brain death. We recommend that all apnea tests be performed with apneic oxygenation.
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Arch Neurol Chicago · Sep 1990
Case ReportsExtensive brain calcification and progressive dysarthria and dysphagia associated with chronic hypoparathyroidism.
An 81-year-old woman with a 13-year history of hypoparathyroidism developed dysarthria and dysphagia. Cranial computed tomography demonstrated extensive calcification involving the basal ganglia, corona radiata, and deep cerebellar structures. The cerebral small-vessel calcification that occurs in chronic hypoparathyroidism may produce the syndrome of progressive dysarthria and dysphagia.
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Arch Neurol Chicago · Jul 1990
Efficacy of a 1- to 3-day ambulatory electroencephalogram in recording epileptic seizures.
The duration of an ambulatory electroencephalogram (aEEG) necessary to record epileptic seizures was studied in neurological patients. A total of 2221 aEEG recordings were made for 2035 inpatients. ⋯ Of the total number of epileptic seizures, 81% were encountered during the first 24 hours, an additional 10% during the next 24 hours, and 7% during the third 24-hour period. Our conclusion was that, in patients exhibiting epileptic seizures during the aEEG recording, the diagnosis will be confirmed by a 2-day recording in the vast majority of the cases.
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Arch Neurol Chicago · Jun 1990
Historical ArticleThe suspension therapy for tabes dorsalis. A case history of a therapeutic fad.
The suspension therapy of tabes dorsalis was introduced by Motschutkovsky in 1883, popularized by Charcot and Gilles de la Tourette in 1889, and subsequently rapidly and widely disseminated on the basis of enthusiastic case series. Dissemination was facilitated by endorsements of eminent neurologists, widespread publicity in professional journals and lay press, and the apparent simplicity and safety of the procedure. ⋯ The disparity between early and later studies resulted from a placebo effect, from disregard of the natural history of the condition, from misdiagnosis, and from biased observation and reporting. By the end of 1890, the procedure was largely abandoned, despite proponents' attempts to modify the technique or to identify a more responsive subgroup of patients.
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Arch Neurol Chicago · Feb 1990
Case ReportsPeripheral neuropathy associated with alpha 1-antitrypsin deficiency.
Peripheral neuropathy associated with alpha 1-antitrypsin deficiency is an uncommon condition. Several recent studies have investigated the possible roles of serum proteinase inhibitors in inflammatory neuropathies, such as multiple sclerosis, Landry-Guillain-Barré syndrome, and various chronic inflammatory demyelinating peripheral neuropathies. We present a case in which alpha 1-antitrypsin deficiency (proteinase inhibitor ZZ phenotype) was diagnosed in a young white man with clinical signs and symptoms of peripheral neuropathy and a history of Landry-Guillain-Barré syndrome. We wish to emphasize the importance of serum protein electrophoresis in the diagnostic workup of patients presenting with the clinical manifestations of peripheral neuropathy.