Cardiovascular Drugs: Antiarrhythmic Drugs

Question 1

Definition of arrhythmia

Answer 1

an abnormal pattern of electrical activity in the heart

Question 2

What causes an arrhythmia?

Answer 2

Usually caused by a group of abnormal cells ➡️ depolarize on their own, not in conjunction w/ the SA node​

Question 3

What do Antiarrhythmic Drugs prevent?

Answer 3

autodepolarization

Question 4

What type of antiarrhythmic drug is this?

1. inhibit movement of sodium ions acrosscell membranes
2. Licocaine
3. Procainamide and quinidine​

Answer 4

Sodium influx inhibitors

Question 5

What Sodium influx inhibitor is this?

1. should be given IV​
2. large doses may cause sedation, ataxia,​ drowsiness​
3. cardiovascular shock and seizures occur w/ overdose​

Answer 5

Lidocaine

Question 6

What Sodium influx inhibitor is this? (2)

1. both available in oral form​
2. One can be given IM, IV​
3. cancause vomiting, diarrhea, anorexia​, increase digoxin plasma levels​

Answer 6

Procainamide and quinidine​

Question 7

What type of antiarrhythmic drug is this?

1. block movement of calcium across channels in the cell membrane​
2. may decrease heart contractility
3. diltiazem, verapamil​​

Answer 7

Calcium channel blockers

Question 8

What type of antiarrhythmic drug is this?

1. blocks sympathetic nervous system receptors, dec. contraction rate of the heart
2. Propanolol

Answer 8

Beta Blockers

Question 9

What Beta Blocker has these adverse effects?

1. decreases contractility​
2. bronconstriction​
3. abnormally slow HR​
4. lose effectiveness over time

Answer 9

Propanolol