Card Set Information
Vet Med - Module 10
What is an arrhythmia?
A disruption in the normal rhythm in the heart
Where do the following arrhythmias originate: a) supra ventricular arrhythmia b) ventricular arrhythmia?
List the different drugs used to treat tacchycardias
Vaugh William Classification (Class I, II, III and IV) and digoxin
List the different drugs used to treat bradyarrhythmias
Muscarinic antagonists, B-agonists, methylxanthines
What is the mechanism of action of Class I AARDs?
What is the mechanism of action of Class II AARDs?
Beta blockers (antagonise B receptors)
What is the mechanism of action of Class III AARDs?
Block outward K
What is the mechanism of action of Class IV AARDs?
How does digoxin have anti arrhythmic effects?
It increases parasympathetic activity and decreases sinus rate
Does digoxin have a large or small volume of distribution?
How many half lives does digoxin take to reach a steady state?
How is digoxin eliminated?
Why is it not recommended to give a loading dose with digoxin?
As it has a narrow therapeutic index
Give an example of a muscarinic antagonist
What is the mechanism of action of the muscarinic antagonists?
Antagonism of muscarinic acetylcholine receptors
What is the mechanism of action of B-agonists?
Stimulation of B-adrenergic receptors
What is the mechanism of action of methylxanthines?
Mild PDE inhibition