Questions and CORRECT Answers
midazolam - CORRECT ANSWER - what is the common name for Versed
.04 mg/kg - CORRECT ANSWER - standard adult dose of atropine
half dose - CORRECT ANSWER - how much NPH insulin should a patient be
administered prior to an EP study? (they are fasting think about blood sugar)
4-8 weeks - CORRECT ANSWER - What is the elimination half life of amiodarone?
4 half lives - CORRECT ANSWER - how long should an anti arrhythmic drug be
discontinued prior to EP study?
sodium channel - CORRECT ANSWER - what do class I drugs primarily affect?
slope of phase 0 (depolarization speed) - CORRECT ANSWER - what do class 1 drugs
effect on sodium channels primarily do?
Class 1A drugs - CORRECT ANSWER - slow conduction velocity and increase
refractoriness
Class 1B drugs - CORRECT ANSWER - drugs that shorten refractory periods
Class 1C drugs - CORRECT ANSWER - pronounced depressants on conduction velocity
class II drugs - CORRECT ANSWER - What class antiarrhythmic are beta blockers
, Class II Drugs (Beta Blockers) - CORRECT ANSWER - Prevent catecholamine-mediated
action on the heart, blocks sympathetic nervous system cardiac effects (no effect on AP,
decreases sympathetic tone)
`class III drugs - CORRECT ANSWER - increase AP duration by increasing refractoriness
but do not affect conduction velocity
class IV drugs - CORRECT ANSWER - calcium channel blockers (primarily affecting SA
and AV nodes)
Class V drugs - CORRECT ANSWER - digitalis agents that are used to increase
parasympathetic activity
Class IA drug examples - CORRECT ANSWER - procainamide, disopyrimidine, quinidine
Class IB drug examples - CORRECT ANSWER - Lidocaine Mexiletine
Class IC drug examples - CORRECT ANSWER - Flecainide, Propafenone, Encainide
Class II antiarrhythmic drug examples (beta blockers) - CORRECT ANSWER -
propanolol, metoprolol, atenolol, esmolol
class III drug examples - CORRECT ANSWER - amiodarone, ibutilide, sotolol, dofetilide
Class IV drug examples - CORRECT ANSWER - Verapamil, Diltiazem
1:1 (10 mg/1000 units) - CORRECT ANSWER - what is the ratio that heparin and
protamine counteract eachother?