RCES COMPLETE EXAMINATION TEST
QUESTIONS WITH VERIFIED 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
●● 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?
QUESTIONS WITH VERIFIED 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
●● 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?
