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Biomedical subjects

G Rodríguez

Publications and source records attributed to G Rodríguez.

At least 91 records · Page 5Linked to original sources

A decade of adult liver transplantation in a single center in Chile.

INTRODUCTION: Since the early days, liver transplantation (OLT) has conquered several barriers worldwide to become a proven therapy. We assessed the evolution of our adult liver transplant program. METHODS: We studied all adult patients who underwent OLT since the inception from November 1993 through May 2003. Donor data, recipient pretransplantation evaluation, surgical technique, results, and costs were examined over our evolution, stratifying 3 groups over time, based on the number of adult OLT per year. RESULTS: Between November 1993 and May 2003, 70 OLT were performed in 64 patients older than 15 years of age. Preoperative Child score, preoperative creatinine level, donor and recipient age, and proportion of emergencies were similar in the 3 groups. Over time, the predominant surgical technique was the piggyback technique (97% of OLT) with a decrease in the use of bypass from 63% to 5% during the last time period. Over the 10 years of our program's existence, warm ischemia time has been reduced to less than 1 hour, whereas cold ischemia time has remained constant at around 5 hours. Biliary and vascular complications decreased over time to around 10%. The mean length of hospital stay (LOS) decreased to 12 days (excluding emergencies). Since inception, our 1-year patient survival rate average is 91%; however, in just the last 3 years of our program (2000 through 2003), the 1-year patient survival rate is 97%. CONCLUSIONS: In summary, our surgical technique has evolved toward piggyback use without veno-venous bypass with a significant decrease in warm ischemia times. As expected, our results have improved over time and our LOS and costs have decreased. Finally, our current results are similar to the best ones reported in the medical literature today.

Adult↗

A 70% hepatectomy in the rat using a microsurgical technique.

An experimental model of 70% hepatectomy in the rat using a microsurgical technique is described. An operative microscope (Carl Zeiss 10x2) dissection made it possible to identify the hilar anatomical variations and then to avoid unexpected damage to the arterio-portal and biliary branches belonging to the remaining hepatic parenchyma. The use of this microsurgical technique allows for a more homogenous experimental model because it avoids the functional impairment of the remaining liver.

Animals↗

[Development and evaluation of food supplements for the education, health, and nutrition program].

OBJECTIVE: To develop and evaluate nutritional supplements destined to a program of social assistance. MATERIAL AND METHODS: In the design of the nutritional supplements a series of criteria were considered including nutrient composition, physicochemical properties and feasibility of production and utilization. Final products were initially evaluated to determine the level of acceptance in 40 children, 52 pregnant women and 62 lactating women in Mexico City. A community trial was also carried out to determine acceptance and consumption in 108 children and 128 women from a rural community in the state of Morelos. RESULTS: The specific formulation and technical processes of production of the nutritional supplements are presented. Products proved to be widely accepted, with average scores of 4.11-4.29 for the children's beverage, and 3.98-4.15 for a more viscous pap (range of scores was 1 to 5). Products for women received average scores from 4.75 to 5.70 in pregnant and from 4.8 to 5.4 in lactating women (range of scores from 1 to 7). In the community trial, supplements were very well accepted. Average consumption was > 75% among children and > 98% among women. Mean energy intake from supplements was 244 Kcal/day for women, and for children, 168 Kcal/day with the pap and 147 Kcal/day with the beverage. Consumption was consistent in all cases along the study. CONCLUSIONS: Nine nutritional supplements were developed and evaluated which comply with the necessary nutritional, physicochemical and hygienic characteristics for the target population, besides being relatively simple to prepare, and widely well accepted and consumed.

Adult↗

[Acceptability of food supplements in pregnant or lactating women and children under 5 years of age].

OBJECTIVE: The present study explores the acceptance and consumption of nutritional supplements that form part of a governmental program to support nutritionally vulnerable groups. MATERIAL AND METHODS: Pregnant and lactating women, and mothers of malnourished toddlers, infants and children were interviewed. Data were collected, after introduction with an interview guide with an open-ended format, through face-to-face interviews conducted at home. Interviews were taped with previous informed consent. Analysis included topics and subtopics approached by the interviewed women. RESULTS: The studied population showed good acceptance to the supplement when offered as a drink. When considering benefits, pregnant women thought first of their baby's health than of their own and associated the possible advantages of the supplement to its "vitamin" contents. Acceptance of the flavors was largely influenced by previous contact to specific flavors. Children under 1 year of age preferred the liquid consistency and elderly children favored the puree. Most mothers considered that the offered amount was enough and there was the general impression that, as the time of the intervention elapsed, children showed greater appetite. The diet was not substituted by the supplement. CONCLUSIONS: Acceptance of the supplement may be improved by messages focusing on the well-being and health of the child and insisting on the benefits for the pregnant mother. Community health providers should be involved in supporting the program, recommending consumption and acceptance of the supplement. The identification by mothers of "vitamins" as part of the supplement may be used to reinforce the concept of beneficial effects associated to micronutrient supplementation. Qualitative evaluations should be performed as part of the assessment of community-based programs.

Child, Preschool↗