Antiarrhythmic drugs

Question 1

Which antiarrhythmic class blocks calcium channels?

Answer 1

class IV

Question 2

Which class of antiarrhythmics blocks beta receptors?

Answer 2

class II

Question 3

Which class of antiarrhythmics prolongs APD?

Answer 3

class III

Question 4

Name a class 1A drug?

Answer 4

procainamide

Question 5

Which drugs have class 1A effects in diseased myocardium?

Answer 5

lidocaine
mexiletine
(class 1B in normal myocardium)

Question 6

What are the member of the class that most slows AV conduction?

Answer 6

flecainamide

propafenone

Question 7

Which class II antiarrhythmic is not cardioselective?

Answer 7

propranolol

Question 8

What is the DOC for acute suppression of V arrhythmias?

Answer 8

amiodarone
(class III)

Question 9

What drug has class III and class I actions?

Answer 9

dronedarone

Question 10

Which class IV drug cannot be used with digoxin?

Answer 10

verapamil

Question 11

Which drugs are used to treat bradycardia?

Answer 11

isopreterenol

atropine

Question 12

Which antiarrhythmic causes the greatest increase in QRS duration?

Answer 12

flecainamide

Question 13

Which drugs cause the greatest increase in QT interval?

Answer 13

procainamide

amiodarone

Question 14

Which antiarrhythmic drug can cause hypersensitivity

Answer 14

lidocaine

Question 15

Which antiarrhythmic can cause lupus like syndrome?

Answer 15

procainamide

Question 16

Which antiarrhythmic class blocks sodium channels?

Answer 16

Class 1

Question 17

Which antiarrhythmic is similar to lidocaine but orally available?

Answer 17

mexiletine

Question 18

Which antiarrhythmic should be avoided in patients with organic heart disease?

Answer 18

flecainide

propafenone similar

Question 19

Which cardioselective beta blocker should nly be used short term?

Answer 19

esmolol

Question 20

Which class of antiarrhythmics is used for supraventricular arrhythmias?

Answer 20

beta blockers

Question 21

Which antiarrhythmic can cause pulmonary fibrosis?

Answer 21

amiodarone

Question 22

Which antiarrhythmic increases mortality risk in CHF?

Answer 22

dronedarone

Question 23

Which antiarrhythmics can cause torsades de pointes?

Answer 23

procainamide
all class IIIs (amiodarone, dronedarone, sotolol, ibutilide, dofetilide)