Dysrhythmia drugs

Question 0

What do class I dysrhythmia meds include?

Answer 0

Sodium channel blockers

Question 1

Sodium channel blocker (1A) that slows conduction in the heart
S/E: GI upset, CNS changes

Answer 1

Quinidine

Question 2

What do class II dysrhythmia meds include?

Answer 2

Beta-adrenergic blockers

Question 3

What do class III dysrhythmia meds include?

Answer 3

Potassium channel blockers

Question 4

What do class IV dysrhythmia meds include?

Answer 4

Calcium channel blockers

Question 5

Class I B NA blocker
Decreases automaticity of the ventricles
Given IV only
Fast onset, short half-life

Answer 5

lidocaine (Xylocaine)

Question 6

Class I c sodium channel blockerS
Decrease conduction in ventricles
S/E: GI upset, vision problems
For life-threatening dysrhythmia

Answer 6

flecainide (TamoCor)
And
propafenone (Rythmol)

Question 7

First beta blocker prototype
Non-selective, works on beta 1 & 2 which decreases automaticity of the SA node
Dcrs HR & BP and vasodilates 
bronchioles
Not for HF or asthmatic patients
Can cause bronchospasms

Answer 7

propranolol (Inderal)

Question 8

K channel blocker
Prolongs action potential
Slows depolarization
Prolong refractory period
Adverse effects: lung toxicity, hypothyroidism, liver toxicity
Do pulm function test b4 giving
Won’t restore normal rhythm but slows tachy heart

Answer 8

amiodarone (Cordarone)

Question 9

Calcium channel blocker
Slows conduction thru SA and AV nodes
For atrial tachycardia
Watch bradycardia and low bp and LE swelling
Slows the heart enough to let SA node keep up

Answer 9

diltiazem (Cardizem)

Question 10

Unclassified antidysrhythmic
Depresses AV conduction and automaticity of the SA node
Half life 10 seconds
Can cause pauses of asystole that knocks pt back into normal rhythm

Answer 10

Adenosine