antiarrhythmics PG 879 Flashcards
1
Q
action of antiarrhythmics
A
blockade Na or K channels
block beta receptor stimuli
block calcium channels
2
Q
what are the different classes of antiarrhythmics
A
class 1-4
3
Q
specific action of class 1 antiarrhythmics
A
depress excitability of heart thus decreasing pulse rate
4
Q
specific action of class 2 antiarrhythmics
A
beta blockers (block stimulation of beta receptors)
5
Q
specific action of class 3 antiarrhythmics
A
blocks potassium channels in the heart. used for ventricular dysrhythmias and AFIB
6
Q
specific action of class 4 antiarrhythmics
A
blocks calcium channels (critical in muscle contraction and electrical conduction)
7
Q
adverse effects of antiarrhythmics
A
light headedness, weakness, hypotension, bradycardia
