Antiarrhythmic drugs

Card Set Information

Author:
Anonymous
ID:
299554
Filename:
Antiarrhythmic drugs
Updated:
2015-03-30 16:38:56
Tags:
Antiarrythmic Pharmacology
Folders:

Description:
Vet Med - Module 10
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Anonymous on FreezingBlue Flashcards. What would you like to do?


  1. What is an arrhythmia?
    A disruption in the normal rhythm in the heart
  2. Where do the following arrhythmias originate: a) supra ventricular arrhythmia b) ventricular arrhythmia?
    • a) atria
    • b) ventricles
  3. List the different drugs used to treat tacchycardias
    Vaugh William Classification (Class I, II, III and IV) and digoxin
  4. List the different drugs used to treat bradyarrhythmias
    Muscarinic antagonists, B-agonists, methylxanthines
  5. What is the mechanism of action of Class I AARDs?
    Na+ channel blockers
  6. What is the mechanism of action of Class II AARDs?
    Beta blockers (antagonise B receptors)
  7. What is the mechanism of action of Class III AARDs?
    Block outward K+ channels
  8. What is the mechanism of action of Class IV AARDs?
    Ca2+ channel blockers
  9. How does digoxin have anti arrhythmic effects?
    It increases parasympathetic activity and decreases sinus rate
  10. Does digoxin have a large or small volume of distribution?
    Large
  11. How many half lives does digoxin take to reach a steady state?
    3-5
  12. How is digoxin eliminated?
    Renal elimination
  13. Why is it not recommended to give a loading dose with digoxin?
    As it has a narrow therapeutic index
  14. Give an example of a muscarinic antagonist
    Atropine
  15. What is the mechanism of action of the muscarinic antagonists?
    Antagonism of muscarinic acetylcholine receptors
  16. What is the mechanism of action of B-agonists?
    Stimulation of B-adrenergic receptors
  17. What is the mechanism of action of methylxanthines?
    Mild PDE inhibition

What would you like to do?

Home > Flashcards > Print Preview