RCES Exam Questions And Answers 2025
Update.
What is ARVD and when does it occur? - Answer✔Arrhythmogenic Right Ventricular dysplasia;
occurs when the RV myocardium is replaced by fatty and fibrotic tissue
What are afterdepolarizations? - Answer✔Abnormal secondary voltage depolarizations during
the cardiac action potential
What are the two types of afterdepolarizations? - Answer✔EADs (early after depolarizations)
and DADs (delayed afterdepolarizations
What does the QT interval represent? - Answer✔ventricular depolarization and repolarization
What is antedromic conduction? - Answer✔Antedromic conduction is a type of AVRT in which
the impulse travels down the pathway and up the AV node--seen in WPW
What is orthodromic conduction? - Answer✔A type of AVRT in which the impulse travels down
the AV node and up the pathway--this type of conduction is more common
What 3 criteria are needed to sustain a reentry circuit? - Answer✔1.) Parallel pathways that are
connected proximally and distally, forming an electrical circuit 2.) One of the pathways needs a
refractory period that's substantially longer than the refractory period of the other 3.) The
pathway with the shorter refractory period must conduct electrical impulse more slowly than
the other pathway
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What is a normal AH interval? - Answer✔50-140ms
What is a normal HV interval? - Answer✔35-55ms
What is a normal HBE? - Answer✔<30ms
What is a normal PA interval? - Answer✔25-55ms
What is a normal QTc? - Answer✔For men: <450, For women <470
What is a normal QRS interval? - Answer✔<120ms
What is Ohm's Law? - Answer✔V = IR; V= voltage measured in volts, I= current measured in
amps and R= resistance ohms
What is the most likely rhythm is capture beats or fusion beats are seen on the EKG? -
Answer✔Ventricular Tachycardia because both beats demonstrate AV dissociation
When do EADs occur? - Answer✔EADs are seen in phase 2 or phase 3 of the action potential
What is the formula for converting Fahrenheit to Celsius? - Answer✔C= (5/9) (F-32)
What is the formula for converting Celsius to Fahrenheit? - Answer✔F= (9/5)C +32
What is the formula for calculating HR? - Answer✔60,000msec/ RR
What is the most common location of outflow tract VT? - Answer✔RVOT
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