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PubMed1976

[Diabetes mellitus in pheochromocytoma].

The frequency of latent disorders of glucose regulation during pheochromocytoma, is evaluated at 75% of cases. Detailed analysis of 83 cases with a diabetic state, gave the following results: insulin dependent diabetes, 37 cases. Non-insulin dependent, 14 cases. Latent diabetes, 32 cases. The characteristics of the insulin-dependent diabetes were not always suggestive. Insulin dependency was, however, unusual above a certain age. We noted loss of weight in spite of good control of the diabetes, the absence of acidosis and ketosis contrasting with rapid loss of weight. In fact, it is above all the hypertension which should lead to diagnosis. Surgical operation, cures or improves considerably the diabetic state, thus proving the symptomatic nature of this diabetes.

Catecholamines↗
PubMed1976

Complications of povidone-iodine absorption in topically treated burn patients.

One of the dangers of topical therapy in thermal injuries is absorption of the therapeutic agent with subsequent metabolic and toxic complications. Two patients, one 30 years old with a 75% burn, the second 72 years old with a 35% burn, were treated topically with povidone-iodine ("Betadine", pH 2.43). In both patients severe metabolic acidosis developed which could not be attributed to sepsis, hypovolaemia, renal failure, diabetes, lactic acidaemia, &c. The acidosis associated with the 75% burn required large amounts of sodium bicarbonate to maintain pH at 7.35 and a serum-bicarbonate concentration of 15 mmol/l (meq/l); serum-iodine was 48000 mug/dl (normal 4-8.5mug/dl). Acidosis in the second patient was not as severe, and serum-iodine concentration reached 17600 mug/dl. The rate of urinary excretion of iodine was 50.8 +/- 7.4 mg/dl and seemed to be fixed. Haemodialysis was very effective in reducing serum-iodine concentration. Povidone was also systemically absorbed. The persistent acidosis could be caused by absorption of the iodine or the acidic povidone-iodine. Until the aetiology of the acidosis and renal damage is more clear, iodophors should not be used topically for burns greater than 20% of the body surface or in the presence of renal failure.

Absorption↗
PubMedDate not supplied

Phenformin and lactic acidosis: a case report and review.

Phenformin was removed from the U.S. market 20 years ago because of a high incidence of lactic acidosis. Unfortunately, this medication is still available from foreign sources. Another biguanide, metformin, was reintroduced to the United States market for the treatment of diabetes. Biguanide-induced lactic acidosis should be included in the differential diagnosis of elevated anion gap metabolic acidosis. We present a case of phenformin-induced lactic acidosis in which we were consulted at the local poison control center. We also review its pathophysiology, presentation, and treatment. A review of the actions of phenformin illustrates the mechanism of pathology that may also occur with metformin. Risk factors for the development of lactic acidosis include renal deficiency, hepatic disease, cardiac disease, and drug interaction such as cimetidine.

Acidosis, Lactic↗
PubMed1978

[Biguanides: reasons for withdrawal of drugs and remaining indications].

The pharmacological properties and the mode of action of biguanides is presented. In Austria, the association of lactic acidosis with biguanide therapy has led to a cancellation of the registration of buformin and phenformin. Only, if all contraindications for biguanide therapy are strictly observed, metformin can be prescribed for the treatment of obese patients with type II diabetes.

Acidosis↗
PubMed1977

Management of diabetic patients with low blood pH.

In metabolic acidosis, where blood pH is less than 7.20, loss of respiratory centre response to lowered carbon dioxide content and increased hydrogen ion concentration may result. The use of sodium bicarbonate for management of diabetic ketosis and lactic acidosis has been controversial (Kaye 1975) in the past, but it is now the treatment of choice.

Adult↗
PubMedDate not supplied

An experimental analysis of the catecholamines in hyperglycemia and acidosis induced rat brain.

Hyperglycemia and acidosis are the hallmark of diabetes. Since these factors play an important role in the diabetic complications, we have studied the brain catecholamine levels in hyperglycemic and acidotic conditions per se. Experimentally induced hyperglycemia and acidosis are accompanied by significant alterations in the catecholamine levels in discrete areas of the brain. We and others have shown that chronic or acute diabetes in animals as well as in human results in altered neurotransmitter levels. In the present study, hyperglycemia maintained by daily external administration of glucose for thirty days showed increased level of dopamine in striatum and hippocampus, elevation of norepinephrine in hippocampus, and increased level of epinephrine in hypothalamus, midbrain and pons medulla. The ammonium chloride induced acidosis demonstrated significant elevation of dopamine in midbrain and significant increase of norepinephrine in hypothalamus and midbrain, and increased level of epinephrine in hypothalamus, pons medulla and cerebral cortex. On the other hand, sodium acetoacetate induced acidosis did not show any significant change in the level of catecholamines in any of the areas studied. In conclusion, the changes in catecholamine levels observed in experimentally induced hyperglycemic as well as in acidotic conditions are closely related to the changes observed in spontaneous or alloxan or streptozotocin diabetic animals, thereby suggesting that these conditions may be responsible for the changes observed in diabetic animals.

Acidosis↗
PubMed1976

Phenformin and lactic acidosis.

Thirty-eight patients who presented with diabetes and a changed state of consciousness satisfied the criteria for lactic acidosis. Sixteen patients were non-ketotic, and 15 of these were receiving phenformin on admission. In all but one of these 15 patients, however, additional renal or cardiovascular abnormalities, or both, could be identified, which supported a multifactorial aetiology for lactic acidosis. Advanced age and cardiovascular and renal disease are absolute contraindications to the use of phenformin in diabetics.

Adolescent↗
PubMed2001

Diabetic ketoacidosis associated with recurrent pulmonary edema and rhabdomyolysis in a patient with Turner's syndrome.

Turner's syndrome is a condition involving total or partial absence of one X chromosome and has been associated with a number of diseases including non insulin dependent diabetes mellitus, abnormalities of glucose metabolism and hypothreosis. There have been many case reports in which Turner's syndrome is associated with type 2 diabetes, but the association with type 1 diabetes and/or life threatening complications is very rare. We present an unusual case of a patient with Turner's syndrome who has type 1 diabetes and is complicated with ketoacidosis, severe acute and recurrent pulmonary edema and rhabdomyolysis.

Acidosis↗