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1.
Reprod Fertil Dev ; 7(5): 1311-9, 1995.
Artigo em Inglês | MEDLINE | ID: mdl-8848605

RESUMO

Samples of maternal and fetal plasma, fetal urine, and amniotic fluid were collected from 8 chronically cannulated pregnant llamas, in the last third of gestation. The samples were obtained for up to 18 days post-surgery. Osmolality, sodium (Na), potassium (K), chloride (Cl), and urea were measured on 40 samples collected on days 1, 2, 3, 4-5, 6-7, 8-9, and 10-19. The osmolalities of maternal and fetal plasma, fetal urine and amniotic fluid, averaged over these 7 time periods, were, respectively, 312 +/- 2, 311 +/- 1, 484 +/- 14, and 317 +/- 1 mosmol kg-1. Values are given as mean +/- s.e. The major differences from fetal fluid values in the ovine fetus (from previously published values) were the higher osmolality and urea concentration of llama fetal urine. Urine flow rate measured in 6 fetuses, 4.5-6.5 kg body weight, was 5.8 +/- 0.4 mliter h-1; urea clearance rate was 55.5 +/- 11.8 mliter h-1. Glomerular filtration rate (GFR), measured with 51Cr-EDTA in 5 fetuses on 1-4 occasions, was 111.4 +/- 23.3 mliter h-1. Fractional reabsorptions (FR) of Na, K and Cl were 97.9 +/- 1, 75.9 +/- 13.5 and 97.7 +/- 0.4% respectively. The GFR (25 mliter kg-1 h-1) and urine flow rate (1 mL kg-1 h-1) were less than half and about one-tenth the respective values in ovine fetuses. As Na reabsorption is the major oxygen-consuming activity of the kidney, the llama fetal kidney requires only half the oxygen needed by the ovine fetal kidney to reabsorb the filtered sodium load. The reason for the formation of hypertonic, rather than hypotonic, urine in the fetal llama may be due to both greater morphological maturity of the kidney and the excretion of as yet unidentified osmotically active organic substances.


Assuntos
Camelídeos Americanos/embriologia , Cateterismo , Rim/embriologia , Rim/fisiologia , Ovinos/embriologia , Líquido Amniótico , Animais , Cloretos/metabolismo , Diurese , Feminino , Sangue Fetal , Taxa de Filtração Glomerular , Concentração Osmolar , Consumo de Oxigênio , Potássio/metabolismo , Gravidez , Sódio/metabolismo , Ureia/urina , Urina
4.
Rev. cir. infant ; 6(1): 23-6, mar. 1996.
Artigo em Espanhol | LILACS | ID: lil-172551

RESUMO

Con el objetivo de evaluar el impacto de las condiciones de traslado en la evolución y pronóstico de los pacientes con gastosquisis, estudiamos 23 pacientes ingresados en nuestro Hospital entre agosto de 1987 y abril de 1994. Para ello ideamos un score con puntuación de 0 a 10 que toma en cuenta las horas de vida al ingreso, vía de parto, diagnóstico prenatal y condiciones de traslado. Sólo 16 pacientes reunían los datos completos necesarios para ingresar en el score. Se analizaron los datos mediante Test de Student y Técnica de análisis discriminante. Ocho paciente sumaron 3 puntos o menos, los 8 restantes tuvieron un score igual o mayor a 4. El primer grupo tuvo una estadía posoperatoria, un tiempo de permanencia en ARM e índice de complicaciones menor que el segundo grupo. No hubo en el grupo de pacientes con score menor a 3 en tanto que enel grupo de pacientes que sumaron 5 o más hubo 3 fallecidos.Concluímos que las condiciones de derivación y traslado tienen un importante impacto pronóstico y pensamos que la difusión de las condiciones óptimas para la referencia de estos pacientes indidirá favorablemente en su evolución y pronóstico


Assuntos
Gastroenteropatias/epidemiologia , Pediatria
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