Clase #?: Antieméticos Flashcards

1
Q

Zonas principales involucradas en el vómito?

A
  • Núcleo del tracto solitario y centro del vómito (bulbo)
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2
Q

Qué sustancias estan involucradas en estimular la zona gatillo quimioreceptora (ZGQ) del vómito?

A
  • Serotonina
  • Histamina
  • Dopamina
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3
Q

MoA, Metoclopramida:

A
  • Antagonista de receptores D2 y 5HT3
  • Acelera el vaciado gástrico
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4
Q

Indicaciones, Metoclopramida:

A
  • Antinauseoso y antiemético
  • Gastroparesia diabética
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5
Q

ADME, Metoclopramida:

A
  • IV –> 1-3 min
  • IM –> 10-15 min
  • Oral –> 30-60 min
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6
Q

EA, Metoclopramida:

A
  • Efectos extrapiramidales (10%): discinecia (irreversibles)
  • Cansancio, sedación, inquietud
  • Hiperprolactinemia (galactorrea y ginecomastia)
  • Sindrome neuroléptico maligno
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7
Q

MoA, Ondasetrón:

A
  • (Palonosetrón)
  • Antagonista selectivo de 5HT3
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8
Q

Indicaciones, Ondasetrón:

A
  • Prevención y tx de vomito en quimio, radio y postoperatorio
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9
Q

ADME, Ondasetrón:

A
  • Alimentos aumentan la absorción
  • CYP 3A4, 2D6, 1A2
  • Onda: VO e IV (6h)
  • Palo: IV (40h)
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10
Q

EA, Ondasetrón:

A
  • Bien tolerados
  • Inespecíficos; cefaleas, estreñimiento y diarrea
  • Interacción son ISRS –> Sx serotoninérgico
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11
Q

MoA, Aprepitant:

A
  • Antagonistas del receptor NK1
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12
Q

Indicaciones, Aprepitant:

A
  • Igual que ondasetrón
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13
Q

ADME, Aprepitant:

A
  • SUST e INH 3A4
  • INDUCTOR 2C9
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14
Q

EA, Aprepitant:

A
  • Inespecificos y reacciones alérgicas
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