Benzodiazepinas, agonistas alostericos del receptor GABA: ALPRAZOLAM Flashcards

1
Q

Mecanismo de acción:

A

Se une a GABA-A(alfa 1) en neuronas del sistema límbico

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2
Q

Farmacocinetica
Liberación:

A

V.O

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3
Q

Farmacocinetica
Absorción:

A

-Gastrointestinal
-F 80%
-Tmax 1-2 hrs
-Duración: inmediata 4-7 hrs, retardo 7-25 hrs

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4
Q

Farmacocinetica
Distribución:

A

-UPP 70-80%
-Atraviesa placenta
-Se excreta por leche materna

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5
Q

Farmacocinetica
Metabolismo:

A

Hepático por CYP3A4

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6
Q

Farmacocinetica
Eliminación:

A

Renal 80% en forma metabolizada, semivida de
eliminación 12-15 hrs

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7
Q

Acción:

A

Liberación inmediata y retardo con 1 hrs,

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8
Q

Aplicaciones clínicas:

A

● Ansiedad generalizada
● Convulsiones
● Trastornos de pánico
● Sx. de retirada de alcohol
● Agorafobia (miedo a lugares abiertos)

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9
Q

Contraindicaciones:

A

-Contraindicado en pacientes con glaucoma agudo de ángulo estrecho
-No usar con benzodiacepinas y opioides

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10
Q

Efectos adversos:

A

-SN (alucinaciones, trastornos de la conducta, dependencia, sx de abstinencia)
-Musculoesqueléticas
-Respiratorios
-Dermatológicas
-Gastrointestinales

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11
Q

Interacciones:

A

-Potencian efectos de otros sedantes (incluyendo el alcohol)
-Con inhibidores del CYP3A4 (eritromicina, itraconazol, Jugo de toronja disminuyen
el metabolito activo)

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12
Q

FDA:

A

-D
-Suspender lactancia materna

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