Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 3 de 3
Filter
1.
J. bras. patol. med. lab ; 43(4): 235-240, ago. 2007. tab
Article in Portuguese | LILACS | ID: lil-461633

ABSTRACT

A monitoração de vários interferentes nos resultados das análises clínicas laboratoriais originados do sistema de transporte de amostras biológicas de um posto de coleta para o local da fase analítica propriamente dita é de extrema importância. Com o objetivo de avaliar a estabilidade dos bioanalitos durante o transporte, os autores, neste trabalho, monitoraram a temperatura das caixas térmicas. Através de dispositivos medidores de temperatura (chips) introduzidos no interior de cada caixa térmica, observou-se que elas permaneceram climatizadas em torno de 13º a 23ºC, simulando a temperatura ambiente por todo o percurso e tempo necessários. Compararam-se os resultados de análises clínicas laboratoriais das amostras biológicas sem transporte realizadas no laboratório de origem da coleta (Jundiaí) com os das mesmas amostras biológicas com transporte realizado na central em São Paulo. Inicialmente foram estudados os principais parâmetros bioquímicos e a coagulação do sangue, além da urinálise com bacteriologia. A análise estatística foi de concordância entre as duas médias através do coeficiente de correlação intraclasse e também pela técnica de Bland-Altman, na qual se observou que, entre os 29 analíticos estudados, 23 (79,3 por cento) apresentaram concordância boa a excelente; cinco (17,2 por cento), moderada a boa; e uma (3,5 por cento), fraca a moderada. Quanto às uroculturas, elas apresentaram 88 por cento de concordância, portanto boa a excelente, e a urina I apresentou 94 por cento de concordância na hematúria e 87,5 por cento na leucocitúria, também boa a excelente. Os dados obtidos pelas correlações dos resultados das amostras e dos gráficos de temperatura emitidos pelos dispositivos registradores representaram indicadores de validação do sistema de transporte e das análises laboratoriais em até 16 horas após coleta do material, simulando um posto muito distante.


The results obtained from biological sample analysis may be affected by several factors, among them, the conditions of samples transportation from the site of collection to the central laboratory.The aim of this paper was to verify the stability of the samples submitted to the transportation process (from Jundiaí to São Paulo) by comparing the results of 29 clinical laboratory parameters (including microbiology tests) on the same samples submitted or not to transportation. First, we verified the temperature inside a transportation box, during the routine the from Jundiaí to São Paulo, by introducing a special chip able to register it continuously. We observed that the temperature inside the box was kept between 13ºC and 23ºC (similar to room temperature). After that, samples were collected in Jundiaí and divided in two aliquots; one to be analysed at the laboratory in São Paulo. The methodology, apparatus and reagents used on the samples analysis were the same at both laboratories. The statistical analysis showed concordance between both averages trough correlation coefficient "intra-class" and by the "Blan-Altman methods". It was observed that among the 29 parameters: 23 (79,3 percent) showed good to excellent. On the data from urinalysis we observed a good to excellent concordance in the urocult (88.0 percent), and as well in the urine I analysis. The data obtained by the correlation between the laboratory results and the graphics of temperature registered by chip are strong indicative of validation of our laboratorial analysis and transportation system, up to 16 hours sample collection.


Subject(s)
Clinical Laboratory Techniques , Laboratories , Specimen Handling , Transportation/methods , Blood Specimen Collection , Data Interpretation, Statistical
2.
Arq. bras. cardiol ; 62(6): 395-398, jun. 1994. tab, graf
Article in Portuguese | LILACS | ID: lil-159855

ABSTRACT

PURPOSE--To evaluate the effects of pravastatin on lipoproteins, Lp (a), apo B and apo A-I and its tolerability in primary hypercholesterolemic patients in our outpatient lipid clinic. METHODS--Twenty-two primary hypercholesterolemic patients were evaluated. They had all been treated previously with other hypocholesterolemic drugs, including the statins, forming a specific and homogeneous group with hypercholesterolemia and definite coronary risk. After 7 weeks with American Heart Association phase I diet and placebo drug, pravastatin was administered during 12 weeks. All patients received an initial daily dose of 10 mg for six weeks. After this period, this dose was increased to 20 mg. The levels of cholesterol, triglycerides, high-density lipoprotein, lipoprotein (a) and apolipoproteins A-1 and B were determined. RESULTS--No changes occurred with diet and placebo, but pravastatin at a daily dose of 10 mg, reduced significantly cholesterol level (7.22 per cent) LDL-cholesterol (13.08 per cent) and increased HDL-cholesterol (7.8 per cent). The results were better with 20 mg, achieving a reduction of (28.21 per cent) in cholesterol, (36.88 per cent) in LDL-cholesterol, (17.06 per cent) in apo B level and an increase of (10.06 per cent) in HDL-cholesterol. The smaller effect observed with the more commonly used dosage (10 mg/day) was most probably due to the characteristics of the sample with already established hypercholesterolemia, being thus dependent of higher concentrations of medications, as observed in previous treatments in our outpatient clinic. Side affects with this drug were rare. No biochemical changes were observed that would interrupt the continuation of therapy. CONCLUSION--Pravastatin was well tolerated and promoted favorable changes in the total cholesterol, LDL, apo B and cholesterol/HDL and LDL/HDL ratios of primary hypercholesterolemic patients


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Pravastatin/pharmacology , Hypercholesterolemia/drug therapy , Lipoproteins , Pravastatin/administration & dosage , Cholesterol, HDL/drug effects , Cholesterol, LDL/drug effects , Apolipoprotein A-I , Apolipoproteins B , Lipoprotein(a)
3.
Folha méd ; 93(3): 181-3, set. 1986.
Article in Portuguese | LILACS | ID: lil-37074

ABSTRACT

Apresentam-se os fatores de risco para arteriosclerose em geral, discutindo-se em particular os papéis do colesterol, dos triglicerídeos e da fraçäo LDL colesterol como preditores de risco e do HDL colesterol como fator de proteçäo. Os papéis bioquímicos e metabólicos de cada uma das famílias de lipoproteínas säo apresentados resumidamente e abordados quanto a seus aspectos para o risco cardiovascular. Os efeitos da progesterona e dos estrógenos e dos seus derivados säo apresentados e relacionados às diferentes composiçöes dos anovulatórios orais hormonais desde o uso da "pílula" em 1956; a evoluçäo da mesma para a de microdosagem e, mais recentemente, as duas novas formulaçöes: trifásica e monofásica com desogestel. As duas últimas, de acordo com a literatura, parecem produzir alteraçöes mínimas nos perfis lipoprotéicos, apresentando-se como novas possibilidades de opçäo de uso para as mulheres em geral e eventualmente para as que já acumulem outros fatores de risco como a idade e/ou o hábito de fumar


Subject(s)
Arteriosclerosis/etiology , Contraceptives, Oral, Hormonal/adverse effects , Lipoproteins/blood , Risk
SELECTION OF CITATIONS
SEARCH DETAIL