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antiarrythmics > antiarrythmics > Flashcards

antiarrythmics Flashcards

1
Q

What are the drugs of class Ia?

A

quinidine, procainamide, disopyramide

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2
Q

what do the drugs of class Ia do?

A

blocks inward potassium at normal concentration
blocks fast Na at high concentration

depress phase 0 and increase AP duration

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3
Q

what are the drugs of class ib?

A

Lidocaine and Mexiletine

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4
Q

What do the drugs of class Ib do?

A

blocks Na+ in inactive state

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5
Q

What are the drugs of class Ic?

A

Flecainide, propafenone, moricizine

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6
Q

What do the drugs of class Ic do?

A

blocks sodium channels, depresses phase 0

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7
Q

What are the drugs of class II?

A

beta blockers

propanolol, metoprolol, carvedilol, esmolol

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8
Q

What is do the drugs of class II do?

A

decrease SA and AV node activity and phase 4 depolarization

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9
Q

What are the drugs of class III?

A

sotalol, ibutilide, dofetilibide, amiodarone, dronedarone

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10
Q

What do the drugs of class III do?

A

K+ blockade, prolong repolarization

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11
Q

What are the drugs of class IV?

A

verapamil and dilitiazam

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12
Q

What do the drugs of class IV do?

A

block L type calcium channels, slow AVN and SAN

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13
Q

What does adenosine do?

A

dec cAMP, inc IKach

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14
Q

what does digoxin do?

A

blocks na/k pumps, slows AVN, positive inotropic

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15
Q

What is the treatment for acute afib/flutter?

A

digoxin, beta blockers, class IV

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16
Q

What is the treatment for chronic afib/flutter?

A

digoxin, beta blockers, class IV

control sinus rhythm: class III

17
Q

What is the treatment for acute SVTs?

A

IV adenosine, class IV

18
Q

What is the treatment for chronic SVTs?

A

beta blockers, digoxin , class Ic, class III, Class IV

19
Q

What is the treatment for nonsustained VT?

A

asymptomatic - no treatment

symptomatic - beta blockers

20
Q

what is the treatment for sustained VT/VFIB?

A

amiodarone and ICD

21
Q

What is the treatment for glycoside induced VT?

A

digoxin FAB fragments

22
Q

What is the treatment for drug induced Tdp?

A

discontinue offending drug, magnesium sulfate

23
Q

What is the treatment for WPW?

A

amiodarone and procainamide

24
Q

Which arrythmias require cardioconversion?

A

Vflutter, v fib

25
Q

What else besides antiarrythmics would you give some with afib?

A

anticoagulants

26
Q

What arrythmias can vagal stimulation treat?

A

paroxysmal SVT and AVN reentry

antiarrythmics (1 decks)

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