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Query: UMLS:C0085584 (encephalopathy)
 18,178 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Two epileptic patients developed an acute toxic encephalopathy consisting of altered behavior, deteriorating seizure control, and confusion while taking sodium valproate alone. Serum valproate levels were greater than 100 microgram/ml in both. Toxic symptoms resolved when the dose of valproate was reduced, with a consequent fall in serum concentration of the drug.
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PMID:Acute intoxication with sodium valproate. 11 82

Severe hypophosphatemia may be observed after the ingestion of certain antacids which complex phosphorus in the intestinal lumen. In severe burn cases, during realimentation after denutrition, during intense and prolonged hyperventilations responsible for respiratory alkalosis, in diabetic ketoacidosis and in alcoholics. Hypophosphatemia lead to erythrocyte abnormalities which may eventually approach hemolysis, to phagocytosis and platelet function disorders and to neurological troubles which suggest a metabolic encephalopathy, a myopathy, a metabolic acidosis or a change in hepatic functioning. Treatment for hypophosphatemia with milk and sodium or potassium phosphate must be begun as soon as possible and must be sufficient to maintain blood phosphate levels above 10 mg/liter.
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PMID:[Hypophosphatemias (author's transl)]. 12 9

Eighty interposition mesocaval shunts, using a knitted Dacron large diameter prosthesis, have been performed during the past five and one-half years. Patients were evaluated from the standpoint of protection from recurrent esophageal hemorrhage, shunt patency, encephalopathy and cumulative survival analysis. In a selected group of patients, hemodynamic measurements were also obtained in the pre, intra, and postoperative periods. These included measurements of wedged hepatic vein pressure, superior mesentric venous blood flow, and residual superior mesenteric, hepatic sinusoidal and inferior vena cava pressures following the shunt procedure. Additionally, direct shunt flow measurements utilizing a square wave of electromagnetic flowmeter were also performed. Results indicate that the shunt patency is 95%; adequate decompression of the portal system was accomplished; recurrent variceal hemorrhage did not occur if the shunt remained patent; the incidence of encephalopathy was low (11%); and the operative mortality for the entire series was 9%. Continued perfusion of the liver was documented in 44% of patients and appears to be a function of the residual total portal resistance largely controlled by inferior vena caval pressure at the level of graft replacement. Life survivhat the interposition mesocaval shunt appears to be an effective technique for the control of variceal hemorrhage, has important hemodynamic advantages and can be applied to most patients for the control of variceal hemorrhage due to portal hypertension.
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PMID:Hemodynamics of the interposition mesocaval shunt. 12 59

The subacute spongiform encephalopathies include scrapie of sheep, transmissible mink encephalopathy, and kuru and Creutzfeldt-Jakob disease of man. These diseases are caused by filterable infectious agents with unique physical properties. The usual sources of infection in nature are not completely known. Epidemiological evidence suggests that the agents may enter the body through breaks in the skin and mucous membranes. Experimental studies of scrapie after subcutaneous inoculation demonstrated early replication of the agent in lymphoid tissues and later appearance in other organs; as the amount of agent in the central nervous system (CNS) increased, it decreased in or disappeared from lymphoid tissues. In preliminary studies of kuru and Creutzfeldt-Jakob disease, the infectious agents were regularly recovered from the brains of clinically-ill patients and experimental animals but only occasionally from organs outside the CNS. It remains to be seen if early events in the pathogenesis of the two human diseases, before the appearance of clinical signs, are similar to those in scrapie.
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PMID:Pathogenesis of subacute spongiform encephalopathies. 12 25

Mink which are 18 months or older and are dying of transmissible mink encephalopathy (TME) have been found to have a marked reduction in spongiform degeneration of the brain if they are homozygous for the Aleutian gene and thus exhibit the autosomal recessive disorder known as the Chediak Higashi (CH) syndrome. CH mink younger than 1 year, and young or old non-CH mink have a typical lesion profile with widespread microvacuolation of the neuropile. Whereas aged CH mink have reduced spongiform degeneration at both the light and electron microscopic level, there is no other apparent alteration in the TME disease process. The length of incubation, clinical signs, astrocytic response, and brain concentration of the TME agent are comparable to those seen in non-CH mink. We conclude that spongiform degeneration is a secondary change in TME and speculate that vacuolation may be the result of lysosomal enzymes causing an increase in ganglioside catabolism.
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PMID:Transmissible mink encephalopathy. Reduced spongiform degeneration in aged mink of the Chediak-Higashi genotype. 13 Dec 18

The researches of DIENER and co-workers and those of the SEMANCIK'S group, have recently established that some plant diseases, such as potato spindle tuber, citrus exocortis disease and chrysanthemum stunt, are caused by a new class of pathogens, named viroids. These are the smallest known agents (they are smaller than viruses) having a molecular weight of ca 10(5) daltons, and composed of a highly structured RNA, rich in guanine-cytosine base pairs without a capsid. Little is known about the origin, replication model and pathogenic mechanism of viroids and until now only speculations are possible on these subjects. Some properties of the unknown agents of slow virus diseases (scrapie, Kuru, Creutzfeldt-Jakob disease and mink transmissible encephalopathy), suggest that these alterations in the central nervous system are caused by a sort of animal viroid.
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PMID:[Discovery of viroids and possible relationship with human and veterinary medicine]. 13 7

A patient is described with severe intention myoclonus which was made worse by treatment with L-Dopa and improved by clonazepam. Family history and examination of several siblings suggested the diagnosis of Huntington's disease. Subsequent to improvement of the myoclonus the patient appeared to have the rigid form of Huntington's disease. This case represents a unique expression for an otherwise well defined genetic abnormality. Stimulus activated myoclonus in a common feature of a number of disorders of the nervous system. Intention, or action myoclonus has been the subject of increasing interest because of its association with the syndrome of post-anoxic encephalopathy (1), although it may occur with other disorders as well. Many abnormal movements have been reported in Huntington's disease, but myoclonus is a relatively uncommon feature of this disorder and to our knowledge intention myoclonus has not been reported as a major symptom. We recently have evaluated a patient with disabling intention myoclonus and examined several members of his family who have typical Huntington's disease. We therefore report this case, a unique presentation of an otherwise well described movement disturbance.
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PMID:Intention myoclonus in Huntington's disease. 13 56

Two human disease, kuru and Creutzfeldt-Jakob disease, and two animal diseases, scrapie and mink encephalopathy, comprise the group designated the subacute spongiform encephalopathies. Studies on these four classic conditions have generated a new philosophy, new concepts, and new technology that provide a basis for the study of chronic diseases and latent infections of man and animals. These aspects are discussed more broadly and in variable detail in the references listed on the following page.
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PMID:Classic slow virus diseases. 14 98

Thiamine deficiency encephalopathy occurred in a specific-pathogen-free cat colony where the diet consisted exclusively of commercially canned diet. This product was described by the manufacturer as a complete diet for cats. The clinical diagnosis was confirmed by the demonstration of bilaterally symmetrical hemorrhage and microvascular fibrinoid necrosis in the brain and low erythrocyte transketolase levels. Treatment of clinically ill cats with vitamin B complex was followed by recovery within 24 hours.
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PMID:Thiamine deficiency encephalopathy in a specific-pathogen-free cat colony. 15 Apr 72

Twenty-three patients bleeding from varices had mesocaval H-grafts using Dacron prosthetic material. There were 21 men and two women with ages ranging from 37 to 60 years. There were 11 elective and 12 emergency procedures. Five patients (17%) were classified as Child's class A, seven (34%) as class B, and 11 (49%) as class C. An operative mortality of 17% was noted in the entire group, with one late death due to hepatic failure. All deaths occurred in emergency cases belonging to class C. Technical difficulties were encountered more often in the hands of less experienced surgeons. A high rate of shunt patency and minimal problems with postoperative encephalopathy were noted despite abnormal results of ammonia tolerance tests postoperatively. Lack of hepatopedal flow was noted postoperatively compared with preoperative angiograms. There were no serious adverse effects from diversion of blood from the liver in our surviving patients. The interposition mesocaval shunt is a technically safe and easy procedure in the hands of experienced surgeons. We continue to recommend the mesocaval shunt until other methods prove better than this operation.
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PMID:Interposition mesocaval shunt for bleeding esophageal varices: clinical, hemodynamic, and metabolic changes. 15 18


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