PHARMACOC Flashcards

1
Q

Eh (EPPH) =

A

fu(fixation prot plasma)xCli (clairance intrinsèque) / Qh (debit sanguin hepatique + fu x Cli
<0.3 => FAIBLE, FLUX INDÉPENDANTE, SENSIBLE - ENZYMATIQUES.
LIMITÉ PAR: FRACTION LIBRE + CLAIRANCE INTRINSÈQUE

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2
Q

filtration glomérulaire:

A

<65 Da, forme libre, glomérule, passif

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3
Q

phase I=

A

fonctionnalisation, systèmatiquement suivies phase II
métabolites - lipophile
esterases
très lipophiles

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4
Q

% fluctuation plasmatique > 50%

A

rythme administration > t1/2

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5
Q

Clrénale =

A

fe x ClT

sous forme inchangée?

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6
Q

induction CYP

A

augmentation clairance totale
diminution t1/2
pas de changement significatif Vd

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7
Q

insuffisance rénale

A

Cl créatinine < 50 ml/min
diminution sécrétion tubulaire et filtration glomérulaire
augmentation t1/2 à éxcrétion rénale prédominante
DIMINUTION albumine

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8
Q

alimentation

A

ralentissement vidange g, AUGMENTATION SECRETION BILIAIRE
dim, augm F
pas de modif distribution

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9
Q

F

A

vitesse et qt atteint circulation générale

dépend voie adm, fraction absorbée par veine porte, coefficient extraction hépatique

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10
Q

diffusion passive

A

+ fréquent

log P élevé forme non ionisée sans énergie

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11
Q

F formules

A

F’= 1 - E
F = F’ x f (fraction EPPH)
E > 0,7 alors Débit sanguin hépatique négligeable p/r Clairance intrinsèque hépatique

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12
Q

Kd

A

quantifie select pour cible
qt pour antago/ago
inverse proportionnelle affinité

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13
Q

cyclé entérohépatique

A

UGTs

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14
Q

excrétion biliaire

A

hydrosoluble masse mol élevée, actif, cyclé entéro-hépatique

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