Heart Flashcards
What is class 2 of the anti-dysrhythmic table?
Beta blockers
What is class 1 of the anti-dysrhythmic table?
Sodium channel blocker
What is class 3 of the anti-dysrhythmic table?
Potassium channel blocker
What is class 4 of the anti-dysrhythmic table?
Calcium channel blockers
What drugs are unclassified on the anti-dysrhythmic drug table?
Digoxin, GTN, Atropine, Adenosine
Where is GTN administered and what is it administered for?
Sub-lingually for Angina
How does digoxin affect the heart?
It increases the force of contraction by increasing calcium levels, cardiac output increased without using more oxygen.
Examples of class 1 anti-dysrhythmic agents
Lidocaine, Flecinide and Dilsopyramide
Give examples of class 2 dysrhythmic agents
Atenolol, propranolol and metoprolol
Give example of class 4 anti-dysrhythmic agents
Amiodarone and Sotaolol
Give examples of class 3 anti-dysrhythmic agents
Verapamil and Diltizem
How does blocking sodium channels aid dysrhythmia?
Increases depolarisation threshold in cardiac tissue decreasing risk of fibrillation.
How does blocking calcium channels aid dysrhythmia?
Reduces impulse conduction through AV node.
How do beta blockers work?
Increases diastole, improving blood flow to cardiac muscle. B1 agonist.
How does blocking potassium channels aid dysrhythmia?
Prolongs repolarisation phase in neurones