Déterminants du pH sanguin Flashcards

1
Q

pH veut dire quoi

A

potentiel hydrogène = concentration d’un liquide en ions H+

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2
Q

formules pH

A

pH = - log [H+]

pH = 6,1 + log ( [HCO3-] / (0,03 x PaCO2) )

[HCO3-] = concentration plasmatique en bicarbonates
PaCO2 = pression en CO2
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3
Q

pH Acidose

A

< 7.35

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4
Q

pH Alcalose

A

> 7.45

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5
Q

Les limites absolues du pH sanguin

A

7,0 et 7,8

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6
Q

En bas 6,5

A

l’activité du système nerveux central réduite = coma = mort

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7
Q

Alcalose

A

surexcitation du système nerveux = convulsions entraînant l’arrêt respiratoire

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