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1.
Gac. méd. Caracas ; 116(3): 219-223, sep. 2008. tab
Artigo em Espanhol | LILACS | ID: lil-630593

RESUMO

Establecer el papel de las concentraciones de ácido úrico como indicador pronóstico de la severidad de la excreción urinaria de proteínas en 24 horas. Se seleccionaron pacientes con diagnóstico de preeclampsia en las que se pudo determinar las concentraciones de ácido úrico y la excreción urinaria de proteínas en 24 horas. Las muestras de sangre se recolectaron en todas las pacientes antes del parto e inmediatamente después del diagnóstico. Hospital Central “Dr. Urquinaona”. Maracaibo, Estado Zulia. El valor promedio de excreción urinaria de proteínas fue de 4,1 ± 2,0 gramos en 24 horas y de ácido úrico de 7,2 ± 1,6 mg/dL. Los valores de excreción urinaria de proteínas y ácido úrico mostraron una correlación moderada, positiva y significativa (r = 0,518; P < 0,001). Utilizando un valor de 7 mg/dL para dividir a las pacientes en dos grupos, se observó una diferencia estadísticamente significativa en las concentraciones de excreción urinaria de proteínas en 24 horas (P < 0,05). También se observaron diferencias estadísticamente significativas en la edad gestacional al momento del parto, índice de masa corporal, presión arterial sistólica y diastólica (P < 0,05). Usándolo como valor de corte, la sensibilidad para detectar una excreción urinaria de proteínas de 3 gramos fue de 83,3 por ciento, la especificidad fue de 75 por ciento, el valor predictivo positivo de 62,5 por ciento y el valor predictivo negativo de 90,0 por ciento con una exactitud de 79,2 por ciento. Las concentraciones de ácido úrico se correlacionan estadísticamente con la excreción urinaria de proteínas en 24 horas


To establish the role of uric acid concentration as prognostic indicator of 24-hours urinary protein excretion severity. Patients with diagnosis of preeclampsia which uric acid and urinary protein excretion could be determined were selected. Blood samples were recollected in all patients before delivery and immediately after diagnosis. Hospital Central “Dr. Urquinaona”. Maracaibo, Estado Zulia. Mean value of urinary protein excretion was 4,1 ± 2.0 grams in 24 hours and uric acid of 7.2 ± 1.6 mg/dL, showing a moderate, positive and significant correlation (r=0.518; P < 0.001). Using a value of 7 m g/dL to divide patients in two groups, there were statically significant difference in 24-hour urinary protein excretion (P < 0.05). There was also statitiscally significant differences in gestational age at the moment of delivery, body mass index, systolic and diastolic blood pressure (P < 0.05). Using it as a cutoff value, sensibility to detect a 24 -hour urinary protein excretion of 3 gram was 83.3 percent, specificity of 75 percent, positive predictive value of 62.5 percent and negative predictive value of 90.0 percent with and accuracy of 79.2 percent. Uric acid concentrations statitiscally correlates with 24-hour urinary protein excretion


Assuntos
Humanos , Adulto , Feminino , Gravidez , Pré-Eclâmpsia , Proteinúria , Ácido Úrico , Complicações na Gravidez/fisiopatologia , Idade Gestacional , Modalidades de Secreções e Excreções
2.
Chinese Journal of Endocrinology and Metabolism ; (12)1985.
Artigo em Chinês | WPRIM | ID: wpr-534906

RESUMO

The effect of phosphate-load (PL) on urinary protein excretion (UPE) was observed in 14 NIDDM patients without azotemia. All of the patients were with conventional anti-diabetic treatment (CAT). Significant increase of UPE by PL was observed in controlled diabetics (n = 6) with CAT for four weeks, whereas in uncontrolled diabetics with CAT (n = 8) a decrease of UPE was observed. Net increment of urinary phosphate excretion in controlled diabetics was 70% more than that in uncontrolled diabetics after PL. These findings demonstrated that excessive dietary phosphate play a role of nephrotoxicity, and also suggested that hyperphosphaturia was involved in the development of pro-teinuria in diabetics. The problem of appropriate supplement of phosphate for diabetics was discussed.

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