Equilibrio Acido-basico Flashcards

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1
Q

pH normal

A

7,35-7,45

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2
Q

HCO3 normal

A

22-26

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3
Q

PCO2 normal

A

35-45

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4
Q

Acidose metabolica

A

pH baixo e HCO3 baixo

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5
Q

Alcalose metabolica

A

Ph alto e HCO3 alto

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6
Q

Acidose respiratoria

A

PH baixo e pCO2 alta

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7
Q

Alcalose resp

A

Ph alto e baixo pCO2

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8
Q

Algoritimo gasometria

A

Ver pH
Qm justifica ph?
Pode ser disturbio misto?

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9
Q

Quem justifica pH?

A

PCO2: resp (agudo x cronico)
Hco3 normal: agudo

HCO3: metabolico

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10
Q

Disturbios mistos

A

Resposta compensatoria inadequada: disturbio misto

Resposta adequada
Compensado: pH normal
Parcialmente compensado: pH alterado

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11
Q

Formulas disturbio misto

A

Acidose metabolica
PCO2 esperada= 1,5 HCO3 + 8 (erro de +-2)

Alcalose metabolica
PCO2 esperada: HCO3 + 15

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12
Q

Abordagem acidose metabolica

A

Depende da causa

Pesquisar anion gap

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13
Q

Formula anion gap e valor normal

A

Na - (Cl + HCO3)

Valor normal: 8-12

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14
Q

Etiologias acidose metabolica

A
AG normal (hipercloremico)
Perda infrapilorica (diarreia, fistula)
Perda urinaria (acidose tubular)

AG aumentado
Uremia
Intoxicaçao (AAS, metanol…)
Ac latica/cetoacidose

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15
Q

Tto acidoses metabolicas

A

Acidose latica/ cetoacidose nao repoe bicarbonato
Somente se pH <7,1-7,2

Demais: bicarbonato ou citrato VO

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16
Q

Abordagem das alcaloses metabolicas

A
Hipovolemia + hipoK/Cl: 
Vomitos, diureticos
Tto com SF+ KCL
(Aciduria paradoxal)
Hipovolume retem NA/HCO3 hipoK retem K e elimina H

Hiperaldo:
Adenoma: cirurgia
Hiperplasia: espironolactona
Estenose: IECA, stente

Hemotransfusao maciça: hipercitrato