anti-arryhthmics

Question 1

Class IA anti-arrhythmics

Answer 1

Procainamide, Quinidine, Disopyramide

Question 2

Class IB anti-arrhythmics

Answer 2

Lidocaine, Phenytoin, Mexiletine

Question 3

Class IC anti-arrhythmics

Answer 3

Flecamide, Propafenone

Question 4

Class III anti-arrhythmics

Answer 4

Sotalol, Amiodarone, Ibutilide, Dofetilide

Question 5

Class II anti-arrhythmics

Answer 5

beta blockers

Question 6

Class IV anti-arrhythmics

Answer 6

nondihydropiridone Ca channel blockers; verapamil + diltiazem

Question 7

Extras

Answer 7

Digoxin, Magnesium, Adenosine, Ivabradine

Question 8

Cause QT prolongation and risk of Torsades

Answer 8

Ia and III

Question 9

Which QT prolonging drug doesn’t run risk of Torsades

Answer 9

Amiodarone

Question 10

Which act on cardiac myocyte AP?

Answer 10

I and III

Question 11

Which have effect of K+ of myocyte AP?

Answer 11

III and Ia

Question 12

SE of adenosine

Answer 12

flushing, hypotension, CP, bronchospasm, feeling of doom

Question 13

What is responsible for maintaining the electrochemical gradient at resting membrane potential?

Answer 13

Na/K ATPase

Question 14

Ion responsible for node repolarization?

Answer 14

K

Question 15

location of SA node

Answer 15

R atria

Question 16

magnesium is used to treat what specific type of arrhythmia?

Answer 16

Torsades De Pointes

Question 17

flushing, chest pain, dyspnea, hypotension

Answer 17

Adenosine SE

Question 18

Which class Ia also blocks a -adrenergic and muscarinic receptors, thereby potentially leading to increased heart rate and AV conduction

Answer 18

quinidine

Question 19

procainamide SE

Answer 19

lupus, N/V/D, agranulocytosis, thrombocytopenia

Question 20

disopyramide SE

Answer 20

anticholinergic = urinary retention, dry eyes and mouth, blurred vision, constipation, sedation

Question 21

what two antiarrhytmics can cause pulmonary fibrosis

Answer 21

tocainide + amiodarone