anticoagulant Flashcards

1
Q

def anticoagulant

A

empêche la formation de caillot en bloquant la coagulation

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2
Q

def antiagrégant

A

empêche l’agrégation des plaquettes, donc la formation du thrombus

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3
Q

anticoagulant forme orale?

A

AVK
NACO

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4
Q

anticoagulant forme intraveineuse?

A

HBPM
HNF

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5
Q

AVK inhibe quoi?

A

synthèse hépatique des facteur de coagulation comme II, VII, IX, X et protéines C et S

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6
Q

avantage AVK

A

antidote efficace

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7
Q

inconvénient AVK

A

surveillance biologique régulière -> dosage INR

Suivi contraignant car prise de san fréquente

Variabilité interindividuelle importante

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8
Q

TTT NACO?

A

Dabigatran = inhibiteur thrombine IIa
Apixaban et Rivaroxabran = inhibiteur Xa

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9
Q

avantage NACO

A

pas de suivi biologique régulier

Pharmacocinétique plus stable et prévisible

Demi vie plus courte donc élimination + rapide

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10
Q

inconvénient NACO

A

absence antidote efficace

Pas de dosage réalisable en routine pour évaluer efficacité ou détecter surdosage

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11
Q

TTT antiagrégant

A

Aspirine = inhibe prod thromboxane A2 en bloquant cyclooxygénase

Clodipogrel, Ticagrelor, Prasugrel = inhibe récepteur P2Y12 de l’ADP

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