Antiarritmicos 2 Flashcards

1
Q

Clase I A

A
Bloqueo canales de sodio
Activa
Rec intermedia
Prolonga repolarizacion
Quinidine
Procainamide
(Disopiramida)
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2
Q

Clase I B

A
Bloqueo canales de sodio
Inactivo
Rec rápida
Acorta repolarización 
Extraordinamente eficazes
Lidocaine
Mexiletine
Tocainide
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3
Q

Clase IC

A
Bloqueo canales de sodio
Refractory (activa)
Rec. lenta
No altera repolarización 
Bloque bastante prolongada en el tiempo
Flecainide
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4
Q

Clase II

A

Bloqueantes beta-adrenérgicos

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5
Q

Clase III

A
Bloqueantes de canales de potasio
Prolonga repolarización 
Amiodarone
Sotalol
(dronedarona)
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6
Q

Clase IV

A

Bloqueantes de canales de calcio

Verapamil, dilitazem

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7
Q

Quinidina farmacokinetica

A

oral -> renal
Mayor eliminacion si acidificamos orina
Metabolismo hepático 90%

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8
Q

Qunidina efectos secundarios

A
Diarrea
Efectos anticolinérgicos
Alergia, Asma, trombocitopenia
Cinconismo
Hipokalemia
Torsades
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9
Q

Quinidina interacciones

A
Potencia de efecto
- Codeina
- Propafenona
- Flecainida
- Metoprolol
- Digoxina
- Acenocumarol
Aumneta niveles de quinidina
- Propanolol
- Cimetidina
- Verapamilo
Baja niveles de quinidina
- Fenobarbital
- Fenotiona
- Rifampicina
- Nifedipino
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10
Q

Quinidina usos

A

Arritmias supraventriculares

Arritmias ventriculares por reentrada

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11
Q

Procainamida usos

A

Taquicardia ventriculares y extrasístoles asociadas a IAM

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12
Q

Clase IA contraindicaciones

A
Alergia
IC
QT alargado
Embarazo
Glaucoma
HPB
Miastenia Gravis
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13
Q

Lidocaine farmacokinetica

A

IV

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14
Q

Lidocaine usos

A
Post MI
Taquicardia ventricular
Flutter ventricular
Anestésico local
Arritmias por intoxicacion digitalica
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15
Q

Lidocaine efectos secundarios

A

SNC - vértigo, euforia, convulsiones
GI nauseas vomitos
CV - bradicardia, bloqueo atriventricular

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16
Q

Lidocaine contraindicaciones

A

Alergias

Epilepsia

17
Q

Propafenona y Flecainida usos

A

fibrilacion auricular y flutter
Profilaxis de taquicardia supraventricular
W.P.W

18
Q

Amiodarona farmacokinética

A

Muy liposoluble
Metabolismo hepático 100%
Eliminación renal hasta 9m después de suspender tto.