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G Posada

Publications and source records attributed to G Posada.

At least 19 recordsLinked to original sources
PubMed1999

Maternal care and attachment security in ordinary and emergency contexts.

One of the foundations of attachment theory is the notion that early care plays a key role in determining the quality of child-caregiver attachment relationships. Studies have consistently shown relations between maternal sensitivity and infant security. Further research is required to resolve issues arising from modest correlations, focus on research in stressful as opposed to ordinary contexts, and questions about the generality of results across cultures and social contexts and about the context specificity of caregiving behavior. This article addressed these issues in 2 studies of child care in home and hospital contexts. Q-sort scores derived from extended naturalistic observations were used. Results are discussed in terms of links between methodology and effect sizes, the generality of links between maternal care and child security, the need for further research on caregiving in ordinary and emergency situations, and the context sensitivity of maternal behavior.

Adult↗
PubMed1994

The development of attachment: from control system to working models.

After two decades of theoretical and descriptive work, we know a great deal about the developmental course of early attachment relationships. We know considerably less about the mechanisms underlying consistency and change. Indeed, the most pressing issue in attachment theory is to explain well-replicated correlations between early care and subsequent patterns of secure base behavior, and between secure base behavior in infancy and subsequent behavior with parents and siblings, social competence, self-esteem, and behavior problems. As a step in this direction, we examine Bowlby's developmental outline, with an eye toward providing greater detail and incorporating traditional learning mechanisms into Bowlby's attachment theory.

Humans↗
PubMed1991

Rice-based oral electrolyte solutions for the management of infantile diarrhea.

BACKGROUND: In infants the treatment of acute diarrhea with glucose-based solutions results in rehydration but does not reduce the severity of diarrhea. Oral rehydration with solutions based on rice powder may reduce stool output as well as restore fluid volume. METHODS: We designed a prospective, randomized, double-blind study to evaluate the efficacy of two rice-based rehydration solutions and a conventional glucose-based solution. Solution A contained only rice-syrup solids, solution B contained rice-syrup solids and casein hydrolysate, and solution C, the glucose-based solution, served as control. The study subjects were 86 mildly to moderately dehydrated infant boys, 3 to 18 months old, who were admitted to a children's hospital with acute diarrhea. We measured fluid intake, fecal and urine output, and absorption and retention of fluid, sodium, and potassium at intervals for 48 hours in all 86 infants. RESULTS: The mean (+/- SE) fecal output was significantly lower in the infants given solution A (group A infants) than in the infants given solution C (group C) (29 +/- 4 vs. 46 +/- 7 ml per kilogram of body weight, P less than 0.05) during the first six hours of therapy. The infants in group A also had greater fluid absorption (221 +/- 16 vs. 167 +/- 9 ml per kilogram, P less than 0.05) over the entire 48 hours of therapy and greater potassium absorption (1.6 +/- 0.2 vs. 0.6 +/- 0.1 mmol per kilogram, P less than 0.05) during the first six hours than the infants in group C. Solution B offered no advantages over solution A. CONCLUSIONS: Solutions containing rice-syrup solids were effective in the rehydration of infants with acute diarrhea. They decreased stool output and promoted greater absorption and retention of fluid and electrolytes than did a glucose-based solution.

Acute Disease↗
PubMed1987

Efficacy comparison of oral rehydration solutions containing either 90 or 75 millimoles of sodium per liter.

In a randomized trial, 62 infants 2 to 35 months of age with dehydration due to acute watery diarrhea were allocated to one of two groups: group A received solution A (World Health Organization-recommended oral rehydration solution), which contained (mmol/L): Na+ 90, K+ 20, Cl- 80, citrate3- 10, and glucose 110; group B received solution B (Pedialyte RS; Abbott Laboratories, North Chicago), which contained (in mmol/L): Na+ 75, K+ 20, Cl- 65, citrate3- 10, and glucose 139. Oral therapy was given until clinical signs of hydration status were normal. During the 48-hour trial, the following laboratory data were collected: blood gases, serum electrolytes, glucose, urea, and creatinine values and sodium and potassium concentrations in stool and urine; serial weights and clinical signs were also reported. Six of the 62 infants, three in each group, required intravenous fluids because of high stool output. Results of clinical outcome and normalization of altered serum electrolyte values were similar in both groups. During the 48-hour trial, eight patients in group A and four in group B had mild, asymptomatic hypernatremia. Pedialyte RS was found to be a safe glucose/electrolyte solution for oral rehydration therapy.

Administration, Oral↗
PubMed1984

Hypernatremic diarrheal dehydration treated with "slow" (12-hour) oral rehydration therapy: a preliminary report.

Thirty-five infants with hypernatremic diarrheal dehydration were given "slow" oral rehydration therapy, with deficits replaced over a period of 12 hours. A group of 24 infants received glucose-electrolyte solution for 8 hours, followed by plain water for 4 hours in a volume of 2:1; 11 other infants received equivalent volumes of glucose-electrolyte solution alone over 12 hours. Serum sodium concentrations fell to normal at similar rates in both groups. None of the 35 infants manifested convulsions. These preliminary results indicate that further evaluation of slow oral rehydration in infants with hypernatremic dehydration should be considered.

Administration, Oral↗
PubMed1983

Oral rehydration in hypernatremic and hyponatremic diarrheal dehydration.

Ninety-four well-nourished, bottle-fed infants with hypernatremic (N = 61) or hyponatremic (N = 33) diarrheal dehydration were treated with oral rehydration. In 61 hypernatremic and 25 hyponatremic infants, two thirds of the fluid volume were given as glucose/electrolyte solution containing 90 mmole of sodium per liter and one third as plain water; the other eight hyponatremic infants were given glucose/electrolyte solution alone. Fluid deficits were successfully and rapidly replaced with oral therapy alone in all 61 hypernatremic infants (mean +/- SEM, 8.5 +/- 0.6 hours) and in 31 of those with hyponatremia (mean +/- SEM, 10 +/- 1.2 hours). Two hypernatremic infants required some intravenous (IV) fluids. The mean serum sodium levels fell in the hypernatremic infants to normal and rose in those with hyponatremia. Only five (8%) of the 61 hypernatremic infants manifested convulsions during oral rehydration; this compared favorably with the 14% rate of convulsions encountered previously when we used IV rehydration.

Administration, Oral↗
PubMed1983

Treatment of 242 neonates with dehydrating diarrhea with an oral glucose-electrolyte solution.

Two hundred thirty-four of 242 neonates (96.7%) with a mean dehydration of 5.1% body weight were rehydrated with a glucose-electrolyte solution given orally in an average time of 7 44 hours. Eight (3.3%) neonates required intravenous fluid therapy. Emesis was not an obstacle for complete oral rehydration. Hypernatremia, hyponatremia, and acidosis present on admission were corrected within a few hours. Oral rehydration is an entirely satisfactory choice for treatment of uncomplicated dehydration in neonates.

Administration, Oral↗
PubMed1980

Oral rehydration of infants with acute diarrhoeal dehydration: a practical method.

Previous studies demonstrated the efficacy of oral glucose/electrolytes solution (GES) in rehydration of moderately dehydrated infants; the importance of providing one volume (200 ml) of solute-free water for every two volumes (400 ml) of GES ingested was also stressed. In this study we investigated a variation of our previous method intended to make it simpler and more practical. The entire calculated volume of GES was administered as rapidly as possible followed by a volume of free water equal to one-half the volume of GES ingested. In total 50 children (25 girls), aged 10 days to 24 months, with diarrhoeal dehydration were studied; the mean degree of dehydration was 7.2% of body weight. Hypernatraemia present on admission was corrected within a few hours, as was severe metabolic acidosis. Vomiting rapidly diminished or disappeared following onset of therapy and the mean rate of ingestion of fluids was high, 28 ml/kg/h, allowing for rapid rehydration; the mean time required for rehydration was 7.9 h (range 2.3-17). The described method offers simplicity and practicality, while still providing free water to correct or prevent hypernatraemia.

Acute Disease↗
PubMed1979

Oral rehydration of neonates with dehydrating diarrhoeas.

Thirty-nine of forty neonates with mean dehydration equivalent to 6.7% of body-weight were orally rehydrated with a glucose/electrolyte solution. Only one patient required any intravenous fluids for rehydration. Hypernatraemia and acidosis present at admission were corrected within a few hours without complications. It seems that oral rehydration, is suitable for neonates as well as for children and adults.

Administration, Oral↗