Hemostasia Flashcards

1
Q

Fases de la hemostasia

A
  1. Vascular
  2. Plaquetaria
  3. Cascada
  4. Fibrinolisis
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2
Q

Fase vascular

A

Vasoconstricción mediada por la endotelina

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3
Q

Fase Plaquetaria

A

Liberan los granulos plaquetarios
- ADP
-TXA2
-Serotonina
-Ca

GP-Ib + FVWillerbrand (Ad)
Gp-IIbIIIa + fibrinogeno (Ag)

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4
Q

Anticoagualntes en la fase plaquetaria

A

AAS -> inhibir CoX1 -> TXA2 -> Gp-IIbIIIa
- Suspende 7 días antes

Clopiogrel -> inhibe receptor de IIbIIIa
-Suspende 3 días antes

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5
Q

Cascada

A

Vías -> termina el común en factor Xa -> fibrina

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6
Q

Qué sigue del Xa

A

Protrombina -> trombina (IIIa) -> fibrinogeno -> fibrina

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7
Q

Factores dependientes de Vit K

A

10 , 9, 7, 2

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8
Q

Estabiliza el tapón plaquetario

A

Fibrina

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8
Q

Inhibe la Vit K (factores) y hace el sangrado más frecuente

A

Warfarina

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9
Q

Función de la HNF

A

Activa antitrombina 3 (freno de la trombina)

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10
Q

Anticoagulantes que inhiben el Fact. Xa

A

HBPM
Rivaroxabam

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11
Q

Anticoagulantes que inhibe la trombina

A

Digatran

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12
Q

Mide la vía extrinseca

A

TP 11-15s

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13
Q

Mide la vía intrinseca

A

TPT 25-45s

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14
Q

Fase de la fibrinolosis

A

Mediada por plasmina y plasminogeno

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15
Q

Reversión del anticoagulante

A

Dar Vit K + PFC -> INR 1.0-1.2

16
Q

Cirugía programada

A

Warfarina suspende 5 días antes

HBPM/Dabigatran 24hr antes

HBPM reinicia 24hrs después de Qx