B - 16. Antiarrhytmic agents

Question 1

Class I

Answer 1

Na+ channel blockers

propafenone (prolongs AP)
lidocaine (shortens AP period) (not used orally, first pass metabolism too high)

Question 2

Class II

Answer 2

Beta blockers

esmolol
sotalol

Question 3

Class III

Answer 3

K+ channel blockers

amiodarone

Question 4

Class IV

Answer 4

Ca++ channel blockers

verapamil

Question 5

Misc (class V)

Answer 5

PSVT: adenosine, digoxin

AV-block: atropine (not in the drug list for this particular topic but nice to know)

Question 6

Mg++

Answer 6

Used for Torsades du Pointes