Study of erythrocyte ATPases in infants evaluated during the recovery phase of severe dehydration caused by diarrhea.

Background/aims: Patients severely dehydrated from diarrhea are at risk of developing hyperkalemia consequent to fluid therapy treatment. In parallel with the regulation of external potassium balance by the kidney and gastrointestinal tract, plasma potassium is rapidly regulated by redistribution of potassium between the extracellular and intracellular compartments. Erythrocytes contain ATPases that play a role in this potassium movement.

[Basis of nutritional support in pediatrics].

OBJECTIVE: To present an update and systematic review of the basis of nutritional support in pediatrics, emphasizing the importance of nutrition in critically ill patient. METHODS: Relevant studies were selected from databases (Medline, Scielo, Lilacs, etc.).

[Magnesium metabolism in chronic primary hypomagnesemia].

OBJECTIVES: To report three cases of primary hypomagnesemia (PH) with secondary hypocalcemia in symptomatic infants, born to consanguineous parents, and to present Mg metabolic studies.METHODS: Classic metabolic balances of Mg were performed during three consecutive days, using carmin as fecal marker, with and without Mg supplementation.RESULTS: The patients (one male) presented, between 15 and 28 days old, with convulsions and persistent hypocalcemias, which could not be controlled with anticonvulsivants and/or intravenous calcium gluconate.

The effects of glutamine-supplemented diet on the intestinal mucosa of the malnourished growing rat.

Unlabelled: Glutamine is the most abundant amino acid in the blood and plays a key role in the response of the small intestine to systemic injuries. Mucosal atrophy is an important phenomenon that occurs in some types of clinical injury, such as states of severe undernutrition. Glutamine has been shown to exert powerful trophic effects on the gastrointestinal mucosa after small bowel resection or transplant, radiation injury, surgical trauma, ischemic injury and administration of cytotoxic drugs.

Clinical and laboratory parameters in dapsone acute intoxication.

Objective: To determine the severity of dapsone (DDS) acute intoxication - an uncommon medical event - using clinical and laboratory parameters.

Methods: Two hundred and seventy four patients with acute DDS intoxication, aged 1 month to 50 years old, were studied and classified into four age groups. Clinical evaluation was assessed through a protocol and correlated with laboratory parameters.