Lesion Renal Aguda Flashcards

1
Q

Definición

A

Disminución de la capacidad de los riñones para eliminar productos nitrogenasdos de forma aguda (<7 días)

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2
Q

LRA más común

A

Prerrenal

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3
Q

Fisiopatología de LRA

Lesion prerrenal

A
  • Hipovolemia
  • -GC
  • -Volumen circulante eficaz = ICCongestiva, Insuf Hepática
  • Def de autorregulación renal
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4
Q

Causas de LRA intrínseca

A
  • Glomerular: glomerulonefritis aguda
  • Tubulos e intersticio: isquemia, septicemia
  • Vascular
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5
Q

Causas de LRA osbtructiva

A

Obstrucción cuello vesical

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6
Q

Facores de riesgo LRA modificables

A
  • Anemia
  • Enf crítica
  • Sepsis
  • Trauma
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7
Q

Factores de riesgo LRA no modificables

A
  • Edad
  • Hombre
  • ERC
  • Proteinuria
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8
Q

Criterios de DX LRA

4

A
  1. <7 días
  2. Cr>50%
  3. CrS >0.3mg/dL
  4. Oliguria >6h
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9
Q

Excreción fraccionada de Na para considerarse prerrenal

Mild, mod, severo

A

<1%

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10
Q

Causas de LRA prerrenal

A

Hipovolemia
Meds: ARAII, IECA

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11
Q

TX

Prerrenal

A
  • So isotónica: Hartmann
  • TAM >65 mmHg
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12
Q

Datos que indican una LRA prerrenal

UNa
Na:K orina
EFNa (%)
Urea
IRF (%)
Cilindros

A

UNa… <12
Na:K orina… K>Na
EFNa (%)… <1%
Urea… >8
IRF (%)… >40
Cilindros.. hialinos

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13
Q

Formula de FeNa

A

(Na Urinario x CrS / NaS x Cr urinaria ) 100

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14
Q

Indice de falla renal

A

CrS x Na urinario / Cr urinaria

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15
Q

Clasificacion de urea/Cr

Para ver si es pre-renal, post-renal o renal

A

Pre: >100:1
Normal: 40-100:1
Renal: <40:1

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16
Q

Clasificación IRA “AKIN”

A
  1. CrS >0.3 = <0.5 en 24h
  2. Cr x2 = <0.5 en 24h
  3. Cr x3 o Cr >4mg o px tx sustitutivo renal =anuria o <0.3 en 24h
17
Q

Clasificacion KDIGO

3

A
  1. 1.5-1-9 veces = <0.5 en 6-12h
  2. 2-2.9 veces = <0.5 en >12h
  3. >3 veces / Cr >4mg/dL = <0.3 en >24h o anuria
18
Q

TRR indicaciones

Uremia
Complicaciones
HiperK
HiperMg
Acidosis
Oligoanuria

Sobrecarga de vol
Intox

A

Uremia: 100
Complicaciones: encefalopatía, pericarditis y sangrados
HiperK: >6 mEq
HiperMg: >4 mMol
Acidosis: <7.15
Oligoanuria: diuresis <200 en 12h
Sobrecarga de vol: edema pulmon
Intox: litio, metanol, etilenglicol, salicilatos