RCES EXAM SCRIPT 2026 FULL QUESTIONS
AND CORRECT SOLUTIONS
⩥ 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
⩥ 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
AND CORRECT SOLUTIONS
⩥ 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
⩥ 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
