Ins. renal aguda (IRA) Flashcards

1
Q

Definición FRA

A

Oliguria (20-40, creatinina >1,5 +EDEMA

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2
Q

Causas FRA prerrenal

A

<volemia: hipovolemia

  • alt. distribución: fallo cardíaco, cirrosis
  • estenosis art. renal, IECA, AINE (VC renal)
  • sepsis
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3
Q

Causas FRA parenquimatoso

A

NTA (necrosis tubular aguda) por:

  • isquemia (posible FRA prerrenal no tratada)
  • nefrotoxinas (aminoglucósidos, metotrexate, cisplatino, hemo/mioglobina, rabdomiolisis)
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4
Q

Diferencia FRA prerrenal y parenquimatosa: bioquímica orina (x5) +sedimento

A

PRE: orina concentrada (>500osm, >1018 dens, Na normal 20mEq, EFNa>1%)
-cilindros granulosos y cél. tubulares

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5
Q

Parámetros oliguria vs. anuria

A

Oliguria <100

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6
Q

Sedimento FRA prerrenal y parenquimatoso

A
  • FRA prerrenal: cilindros hialinos

- FRA parenquimatoso: cilindros granulosos y cél. tubulares

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7
Q

Diagnóstico y tto FRA postrenal

A

Dilatación proximal al stop (hidroureter, hidronefrosis): (pruebas de imagen). Si no se trata: destrucción nefrona

  • Necesario: causa bilateral o sobre riñón único (si no compensa)
  • Tto: soluciona obstrucción
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8
Q

Causa FRA postrenal

A

-Estenosis ureteral, pat. prostática (causa +frec. obstrucción bilateral), neoplasia vesical, litiasis (causa +frec. obstrucción unilateral), fibrosis retroperitoneal

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