RCES- Drug classes Exam | Questions with 100%
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Terms in this set (135)
In the Vaughan Williams classification 1. Class Ia=A. Procainamide, Quinidine- NA blocker
match each class with an example medium fast onset, reduces Vmax and prolongs
antiarrhythmic drug. action potential duration.
A. Procainamide, Quinidine 2. Class Ib=C. Lidocaine -Na blocker of fast onset,
B. Diltiazem, Verapamil, Nifedipine shortens action potential duration
C. Lidocaine 3. Class Ic=E. Flecainide, Propafenone- Na blocker-
D. Amiodarone, Sotalol fast acting, slows conduction.
E. Flecainide, Propafenone 4. Class II=F. Inderal, Timolol, Metoprolol- Beta-1
F. Inderal (Propranolol, Timolol, channel blockers
Metoprolol. 5. Class III=D. Amiodarone, Sotalol- Potassium
I. Class Ia channel blockers and prolong repolarization.
II ClassIb 6. Class IV=B. Diltiazem, Verapamil, Nifedipine
III. Class Ic (Blocks slow Calcium channels)
IV. Class II
V. Class III
VI. Class IV
Which class of antiarrhythmics works Class I
on the sodium channels?
Which class of antiarrhythmics works Class III= blocks K+ channels.
on the Potassium channels?
Which class of antiarrhythmics works Class IV are Ca++ channel blockers
on the Calcium channels?
,What class of antiarrhythmics are Class II are Beta blockers.
classified as Beta blockers?
Diltiazem or verapamil are used to A. Fib- Calcium channel blockers slow the rate and
treat the following heart rhythm: decrease conduction time at the AV node.
IV lidocaine is used to: Treat ventricular arrhythmias in acute MI. Lidocaine
inhibits the fast sodium channel and is used only for
ventricular arrhythmias especially those associated
with AMI.
Accepted cardiac use of IV lidocaine When frequent PVCs or VT significantly drop the
is: BP.
what oral class 1 drug has effects Mexiletine- Class 1b. does not prolong QRS
most similar to IV lidocaine? duration or repolarization.
The most common toxic effect of Proarrhythmia
antiarrhythmic drugs is:
what is the 1st ling drug Adenosine.
recommended by ACLS guidelines
to terminate narrow complex
tachycardia in the stable patient?
, Antiarrhythmic meds have many side 1=B
effects and special considerations. 2=A
match together. 3=E
A. CNS effects (numbness, tingling) 4=C
B. Don't shake ampule, Pulmonary 5=D
Fibrosis
C. Muscle paralysis, flush, sweating
D. Do not mix with other meds.
E. Bradycardia, widens QRS,
vasodilation, Lupus-like effects
1. Amiodarone
2. Lidocaine
3. Procainamide
4. MgSO4
5. Sodium Bicarbonate.
Used as "pill in the pocket" . Class 1c Flecainide. 200-300 mg.
drug used for symptomatic AF
patients with recent onset of AF that
have no structural or ischemic heart
disease.
An awake and asymptomatic patient It may terminate the tachycardia if it is a SVT with
has a very regular, monomorphic aberrancy.
wide-complex tachycardia. The -Adenosine is recommended in the initial diagnosis
physician orders an adenosine IV and treatment of stable, undifferentiated regular,
bolus. WHY> monomorphic wide-complex tachycardia.
Adenosine should not be used for irregular wide-
complex tachycardias becuz it may cause
degeneration of the rhythm to VF.
Correct Answers | Verified | Latest Update 2026
Save
Terms in this set (135)
In the Vaughan Williams classification 1. Class Ia=A. Procainamide, Quinidine- NA blocker
match each class with an example medium fast onset, reduces Vmax and prolongs
antiarrhythmic drug. action potential duration.
A. Procainamide, Quinidine 2. Class Ib=C. Lidocaine -Na blocker of fast onset,
B. Diltiazem, Verapamil, Nifedipine shortens action potential duration
C. Lidocaine 3. Class Ic=E. Flecainide, Propafenone- Na blocker-
D. Amiodarone, Sotalol fast acting, slows conduction.
E. Flecainide, Propafenone 4. Class II=F. Inderal, Timolol, Metoprolol- Beta-1
F. Inderal (Propranolol, Timolol, channel blockers
Metoprolol. 5. Class III=D. Amiodarone, Sotalol- Potassium
I. Class Ia channel blockers and prolong repolarization.
II ClassIb 6. Class IV=B. Diltiazem, Verapamil, Nifedipine
III. Class Ic (Blocks slow Calcium channels)
IV. Class II
V. Class III
VI. Class IV
Which class of antiarrhythmics works Class I
on the sodium channels?
Which class of antiarrhythmics works Class III= blocks K+ channels.
on the Potassium channels?
Which class of antiarrhythmics works Class IV are Ca++ channel blockers
on the Calcium channels?
,What class of antiarrhythmics are Class II are Beta blockers.
classified as Beta blockers?
Diltiazem or verapamil are used to A. Fib- Calcium channel blockers slow the rate and
treat the following heart rhythm: decrease conduction time at the AV node.
IV lidocaine is used to: Treat ventricular arrhythmias in acute MI. Lidocaine
inhibits the fast sodium channel and is used only for
ventricular arrhythmias especially those associated
with AMI.
Accepted cardiac use of IV lidocaine When frequent PVCs or VT significantly drop the
is: BP.
what oral class 1 drug has effects Mexiletine- Class 1b. does not prolong QRS
most similar to IV lidocaine? duration or repolarization.
The most common toxic effect of Proarrhythmia
antiarrhythmic drugs is:
what is the 1st ling drug Adenosine.
recommended by ACLS guidelines
to terminate narrow complex
tachycardia in the stable patient?
, Antiarrhythmic meds have many side 1=B
effects and special considerations. 2=A
match together. 3=E
A. CNS effects (numbness, tingling) 4=C
B. Don't shake ampule, Pulmonary 5=D
Fibrosis
C. Muscle paralysis, flush, sweating
D. Do not mix with other meds.
E. Bradycardia, widens QRS,
vasodilation, Lupus-like effects
1. Amiodarone
2. Lidocaine
3. Procainamide
4. MgSO4
5. Sodium Bicarbonate.
Used as "pill in the pocket" . Class 1c Flecainide. 200-300 mg.
drug used for symptomatic AF
patients with recent onset of AF that
have no structural or ischemic heart
disease.
An awake and asymptomatic patient It may terminate the tachycardia if it is a SVT with
has a very regular, monomorphic aberrancy.
wide-complex tachycardia. The -Adenosine is recommended in the initial diagnosis
physician orders an adenosine IV and treatment of stable, undifferentiated regular,
bolus. WHY> monomorphic wide-complex tachycardia.
Adenosine should not be used for irregular wide-
complex tachycardias becuz it may cause
degeneration of the rhythm to VF.
