PubMed Health⌕ Search

Biomedical subjects

C Carrión

Publications and source records attributed to C Carrión.

6 recordsLinked to original sources
PubMed2006

Biological oxidation of elemental sulphur added to three composts from different feedstocks to reduce their pH for horticultural purposes.

The biological oxidation of elemental sulphur (S(o)) added to three alkaline composts prepared with a range of organic wastes (CC, melon crop residues; MC, mixed manures; and BC, pine bark) to reduce their pH was studied. The titration curves showed that to achieve an equivalent pH drop, compost CC needed a larger dose of S(o) than did composts MC and BC. The acidification efficiency was high in the three composts (53%), but the pH reduction obtained from the titration curves in MC and BC composts was lower than expected. S(o) oxidation in amended composts was found to be related to pH and CaCO(3) content decreases, and to the rise in CaSO(4) and electrical conductivity levels. A remarkable increase in the autotrophic bacteria population and a slight increase in heterotrophic bacteria along with S(o) oxidation were recorded. Actinomycetes, fungi and yeasts were not affected by the addition of S(o) to composts.

Agriculture↗
PubMed1993

[Standard formulas of parenteral nutrition. A study of their use in a general hospital].

The goal of the study was to evaluate the use of parenteral nutrition formulas with standardized g. of nitrogen, carbohydrates and lipids, and to analyze whether the nutritional requirements of the patients treated in our hospital were covered by said formulas or whether it was necessary to change and/or standardize a new formula. To do so, a review was made of 5.646 parental nutrition mixtures prepared in the Pharmacy Service and patterned by the Nutrition Service from April, 1991, to May, 1992, for 308 adult patients. The distribution of the mixtures by services, diagnoses and the frequency of the different standard formulas were studied, comparing standard formula frequency with that of non-standard formulas. Findings showed that 41.9% of nutrition mixtures were patterned in surgery, and the most common diagnosis, cancer, appeared in 24%. Of the mixtures, 67.6% were preestablished formulas, and 32.4% were non-standard formulas. The order of frequency among standard formulas was: basic standard formulas, stress formulas, initial formulas, peripheral formulas, hemodialysis formulas and low-volume formulas. All covered the nutritional needs of a large share of the patients for the different pathologies in which they were indicated. Nevertheless the question of designing a new formula to cover a greater number of situations was raised. Protocolization should take place rationally, to meet the hospital's most frequent pathologies, and effectiveness should be evaluated after tracking and checking each patient.

Adult↗
PubMedDate not supplied

[Epidemiological profile of patients infected by Human Immunodeficiency Virus (HIV)].

INTRODUCTION: The aim of the present work is to identify the principal characteristics of a sample of individuals at the moment of diagnosis of HIV infection. MATERIAL AND METHODS: Descriptive, retrospective study, based on the hospital clinical records of 70 HIV+ patients, without AIDS, selected by means of simple aleatory sampling. RESULTS: Transmission categories: Users of Injectable Drugs (UID) 81.4%, heterosexuals 10%, homo/bisexuals 4.3% and transfusions/plasma donors 2.9%, sex: ratio man/woman = 3.8/1, average age on diagnosis: 27.3 +/- 7.0 years (UID 26.3 +/- 5.1 years, heterosexuals 29.6 +/- 2.1 years, homo/bisexuals 27.3 +/- 3.9 and transfusions/plasma donors 51.4 +/- 23.1 years (p = 0.02). Heterosexual transmission amongst women was 18.8% against 7.4% in men (2.5:1). Marital status: single in 66.7% of the cases. Working activity: 48.9% without work, outstanding amongst those with work was the relatively high proportion of HIV+ working in the building trade (29.2%). Smoking habit: 91.8% were smokers, with greater incidence amongst the UID (100%). Clinical situation: during the five years of follow up, 49% of the patients developed AIDS, with cachectic syndrome because of HIV being the first disease indicative of AIDS at the time of its appearance in the majority of the cases (36.7%) in this sample. The average interval between the date of diagnosis of HIV infection and diagnosis of AIDS was 44 months (rank: 0.9-131). CONCLUSIONS: HIV infection in our sample appears mainly in individuals who are young, male, UID, unemployed and smokers. Prevention strategies should be directed at women, at individuals with a higher risk of heterosexual transmission and at youths who are unemployed or low skilled.

English Abstract↗
PubMedDate not supplied

[Liver transplantation in pediatrics. Nutritional measures].

Malnutrition is a constant in candidates for liver transplant. Because of their particular characteristics, pre-operative nutritional intervention is difficult to apply, so that post-transplant action is necessary. A retrospective study was made, reviewing the clinical records of all the children undergoing liver transplants in 1992 in the "La Paz" Children's Hospital, while they were in the Pediatric Intensive Care Unit. Two groups of patients were established--A and B--respectively of 15 and 7 children, according to whether or not they had received immediate post-transplant TPN. In Group A, a total of 150 days was evaluated, with TPN (x = 10 +/- 8.3). The amino acid solutions used were for liver insufficiency (48.8%), Kidney insufficiency (33.3%) and standard (17.8%). Lipids were administered on 6.3% of days in four patients' nutrition. In 54.5% of interventions, infectious complications occurred due to immune-suppression. Comparison of the two patient groups show significant results: those in Group A had a 3.2 relative risk of suffering infection (certainty interval 1.3-1.8). In terms of time in the ICU, the Group A patients were admitted for an average of 13.4 days (range 2-37) as opposed to the 6.28 days of Group B (range 3-15). Results were significant, with p < 0.05. In terms of evolution, the survival rate in patients receiving TPN was 86.6% against 71.4% in those receiving enteral nutritional (n.s.). Our results show a high rate of survival (86.6%). It is not possible to conclude the extent to which the introduction of TPN influenced post-operative evolution, as there was no consistency in terms of the patients' clinical situation.

Child↗