QuestionSBA
QuestionChoice
This describes a class II anti-arrythmic such as bisoprolol.
10024522
c
Competitive antagonist that blocks adrenaline and noradrenaline at beta receptors
QuestionChoice
This describes a class I anti-arrythmic such as flecainide.
10024521
b
Blocks sodium channels in cardiomyocytes to reduce velocity of action potentials
QuestionChoice
This describes a class V anti-arrythmic.
10024523
d
Unknown mechanism
QuestionChoice
Amiodarone is a class III anti-arrythmic and this is the mechanism of action.
10024520
a
Blocks potassium channels in atrioventricular cardiomyocytes
QuestionChoice
This describes a class IV anti-arrythmic such as verapamil. Amiodarone has some of these effects, but it is not the primary action.
10024524
e
Disrupts the movement of calcium through calcium channels
Concept
Chapter
2693
5781
Class III anti-arrythmics: Potassium-channel blockers
Topic
169
Cardiovascular pharmacology
17302
What is the primary mechanism of amiodarone?
a