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IBHRE CEPS Prep Questions and Answers 2024 Graded A+
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IBHRE CEPS Prep Questions and Answers 2024 Graded A+
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IBHRE CEPS Prep Questions andAnswers 2024 Graded A+
An adult in VF/VT should initially be defibrillated with how much energy? - ANSWER-
200 J
An emergency drug given for bradycardia or AV nodal Block - ANSWER-Atropine
An isolation transformer allows - ANSWER-AC signals (used for ablation energy) to
pass from one circuit to another without allowing the transmission of DC signals.
This effectively reduces direct current leakage and acts as a surge preotector.
Beta blockers do what? - ANSWER-slow the upstoke velocity of the SA & AV Node
cells, therefore slowing conduction in these fibers.
Beta Blockers slow down the - ANSWER-AV Node by reducing automaticity
Calcium channel blockers also help to increase - ANSWER-vagal tone
Calcium channel blockers will _________ automaticity and
_________________________ conduction velocity or action potential duration -
ANSWER-decrease; not change
Cardiac perforation results in - ANSWER-shoulder pain, dyspnea, and pleuritic chest
pain
Class 1 guidelines for permanent pacing - ANSWER-Conditions where there is
evidence that a pacemaker is beneficial and has greater benefits than risks.
For example, symptomatic sinus node dysfunction, such as sinus bradycardia or sinus
pauses, is a class I indication.
Class 1A antiarrhythmic drugs like Quinidine, Procainamide, and Class
3 antiarrhythmic drugs like dofetilide and sotalol do what? - ANSWER-Prolong action
potential duration and cause QT prolongation.
Class 1B antiarrhythmics block what channels? - ANSWER-sodium channels
Class 1B antiarrhythmics mostly affect what chamber? - ANSWER-Ventricles (good for
VT)
Class 1B drugs ________________ the duration of the action potential and
_______________ refractoriness - ANSWER-shorten; decrease
, Class 1C agents including flecainide and propafenone do not: - ANSWER-prolong the
action potential or increase refractoriness
Class 1C antiarrhythmics block what? - ANSWER-Fast Sodium channels
Class 2 guidelines for permanent pacing - ANSWER-Conditions where there is
conflicting evidence or different opinions about the usefulness of a pacemaker.
Class IIa conditions have evidence that favors the pacemaker's efficacy, while Class IIb
conditions have less clear evidence.
For example, asymptomatic third-degree AV block is a class IIa indication.
Class 3 guidelines for permanent pacing - ANSWER-Conditions where there is
evidence that a pacemaker is not useful or effective, and may even be harmful.
Permanent pacing is not recommended for these conditions
Class I Antiarrhythmic drugs are - ANSWER-Sodium channel blockers
Class IA antiarrhythmics block what channels? - ANSWER-Sodium and Potassium
Class II Antiarrhythmic drugs are - ANSWER-Beta Blockers
Class III Antiarrhythmic drugs are - ANSWER-Potassium channel blockers
Class III antiarrhythmic drugs block what? - ANSWER-Potassium channels
Class III antiarrhythmic drugs will _______ action potential duration and __________
conduction velocity or automaticity - ANSWER-increase; not change
Class IV Antiarrhythmic drugs are - ANSWER-calcium channel blockers
Class IV antiarrhythmics block what? - ANSWER-Calcium channels
Electrophysiologic recorder filters should be able to process signals filtered between -
ANSWER-30-40 Hz and 400-500 Hz
Examples of Class 1A antiarrhythmics - ANSWER-Quinidine
Procainamide
Disopyramide
Examples of Class 1B antiarrhythmics - ANSWER-Lidocaine
Mexiletine
Phenytoin
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