Antagonistas Competitivos De H2 Flashcards

1
Q

Sitio de unión de antagonistas H2

A

Membrana basolateral de células parietales

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2
Q

Cuando se utilizan

A

En cicatrización de úlceras gastricas
En la noche para disminuir secreción gástrica nocturna nasal

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3
Q

Tolerancia de H2

A

Consecuencia del efecto de la hipergastrinemia secundaria que ocurre para estimular la liberación de histaminas de las células

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4
Q

T 1/2

A

Cimetidina 4-5hrs
Ranitidina 6-8hrs
Famotidina 10-12hrs

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5
Q

H2 en gastropatia por AINES??

A

NO
Tx IBP y quitar AINE

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6
Q

Tx Úlcera duodenal benigna

A

CIMETIDINA 800mg/noche
CONTINUA Vía IV 37.5-100 mg/hr
INTERMITENTE 30mg cada 6-8hr

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7
Q

Cimetidina EA

A

Diarrea, mareo, dolor de cabeza, fatiga

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8
Q

Famotidina

A

Mejor medicamento para aliviar acidez
Estreñimiento (poco frecuente)

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9
Q

Cimetidina CI en varon ?

A

Provoca ginecomastia

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