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EXAMEN DE ORINA

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July 7, 2023
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Celeste B. Vela


EXAMEN DE ORINA

Definición: prueba simple y accesible, que ayuda a detectar patologías en el riñón, tracto
urinario, corazón e hígado; incluso antes de que se presenten síntomas.

Utilidad: diagnosticar infecciones urinarias, examen medico de rutina, cuando hay
manifestaciones de enfermedad renal, confirmar hematuria debida a afecciones en vejiga,
riñones o próstata.

ORINA

Definición: ultrafiltrado del plasma, compuesto por desechos tóxicos que general el riñón
a causa del metabolismo celular.

Se detecta:

• Estado funcional del riñón.
• Alteraciones en las vías urinarias
• Problemas metabólicos.

Se eliminan aprox. 1.4 L de orina p/ día.

Componentes: 96% de agua




EXAMEN GENERAL DE ORINA (EGO)

Método diagnostico complementario, indoloro, de simple recolección (40-50ml de orina
en un recipiente de plástico), menos molesto que un análisis de sangre.

, Celeste B. Vela


Examen físico:

• Aspecto
-Volumen urinario influenciado por ingesta de líquidos: solutos excretados,
sodio y urea, perdida de fluidos en transpiración y respiración.
• Gravedad especifica (densidad)
-medida parcial del riñón para concentrar orina: rango normal 1.003-1.035 g/mL
(osmolaridad: 500-800 mOsn/kg).
-Métodos de medición: hidrometría (volumen dependiente e inexacto),
refractometria (volumen independiente y mas exacto), tira impregnada con
químicos.
-Deshidratación: orina mas concentrada. Mayor de 1.035; factores- diuréticos,
insuficiencia adrenal, aldosteronismo.
-Hidratación: orina diluida.
• Color
-Color característico se debe a riboflavina, urocromo, productos de degradación
de la bilirrubina, urobilina y uroeritina.




• Olor
-Olor débil y aromático, origen indeterminado: SUI GENERIS.
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