2025 IBHRE CEPS EXAM QUESTIONS,
WITH CORRECT ANSWERS
Ohm's law equation ------- Correct Ans ---------- V=IR
EKG monitored patient should be __________, monitor chassis should be ___________
(nonconductive). Why ------- Correct Ans ---------- ungrounded, grounded. Grounded patient
would be able to conduct leakage currents. we dont want this
lb to kg ------- Correct Ans ---------- 2.2 lb = 1 kg
F to C ------- Correct Ans ---------- C=5/9(F-32)
C to F ------- Correct Ans ---------- F=9/5C+32
3 things that change automaticity of automatic cells ------- Correct Ans ---------- 1. slope of phase
4
2. Change of threshold potential
3. Change of resting membrane potential
a systole is represented by what portion of the ECG ------- Correct Ans ---------- QT interval
What is main ion transfer during systole ------- Correct Ans ---------- K+ seeps out, Ca2+ enters
At rest, what is intracellular/extracellular environment ------- Correct Ans ---------- inside
negative, outside positive
,What phase of AP is resting membrane potential ------- Correct Ans ---------- phase 4
Nodal depolarization occurs via what channel ------- Correct Ans ---------- Ca2+ slow channel
Cardiac muscle cell depol occurs via what channel ------- Correct Ans ---------- Na+ fast channel
During which phases is cell refractory ------- Correct Ans ---------- 1,2,3
TDP caused by what mechanism usually ------- Correct Ans ---------- EAD's (triggered activity)
Variance ------- Correct Ans ---------- Take each number in sample, subtract each number from
mean, square each difference, add all, divide sum by number in sample -1
Standard deviation ------- Correct Ans ---------- square root of variance
P value ------- Correct Ans ---------- Probability of certainty / smaller p value means the more
likely the result could not occur by chance
survival curve showing % of patients surviving treatment over time ------- Correct Ans ----------
Kaplan - Meier curves
when measuring EGM's, earliest atrial activation usually from _____ and earliest ventricular
usually from ______ ------- Correct Ans ---------- P wave / QRS
Morady maneuver is used to differentiate ------- Correct Ans ---------- differentiate AT from
AVNRT/AVRT
, Most common arrhythmia ------- Correct Ans ---------- AF
Most common SVT ------- Correct Ans ---------- AVNRT
What type of single use devices can be resterilized and why? ------- Correct Ans ----------
Diagnostic EP electrodes because lumen and technically not a catheter because no lumen
Fr to mm ------- Correct Ans ---------- 1 Fr = .33 mm
Tip inner diameter standard diagnostic cardiac catheters and why ------- Correct Ans ----------
.038 inch / because it is supposed to be used with .035-.038 inch guide wires
What is 2 rules for CMC's like spiral or lasso ------- Correct Ans ---------- 1. Only approved for use
in LA due to chordae tendinea
2. Only rotate shaft clockwise
Stereotaxis catheters ------- Correct Ans ---------- Have magnets in tip for maneuverability in
response to changes in magnetic field
What system remotely steers guided catheters ------- Correct Ans ---------- Hansen robotic system
ACT for using array ------- Correct Ans ---------- ACT 250-300
bipolar cardiac electrodes record local _________ that occur during phase _______ -------
Correct Ans ---------- depolarizations / phase 0
surface EKG leads usually filtered at what ------- Correct Ans ---------- .1 - 100 Hz
WITH CORRECT ANSWERS
Ohm's law equation ------- Correct Ans ---------- V=IR
EKG monitored patient should be __________, monitor chassis should be ___________
(nonconductive). Why ------- Correct Ans ---------- ungrounded, grounded. Grounded patient
would be able to conduct leakage currents. we dont want this
lb to kg ------- Correct Ans ---------- 2.2 lb = 1 kg
F to C ------- Correct Ans ---------- C=5/9(F-32)
C to F ------- Correct Ans ---------- F=9/5C+32
3 things that change automaticity of automatic cells ------- Correct Ans ---------- 1. slope of phase
4
2. Change of threshold potential
3. Change of resting membrane potential
a systole is represented by what portion of the ECG ------- Correct Ans ---------- QT interval
What is main ion transfer during systole ------- Correct Ans ---------- K+ seeps out, Ca2+ enters
At rest, what is intracellular/extracellular environment ------- Correct Ans ---------- inside
negative, outside positive
,What phase of AP is resting membrane potential ------- Correct Ans ---------- phase 4
Nodal depolarization occurs via what channel ------- Correct Ans ---------- Ca2+ slow channel
Cardiac muscle cell depol occurs via what channel ------- Correct Ans ---------- Na+ fast channel
During which phases is cell refractory ------- Correct Ans ---------- 1,2,3
TDP caused by what mechanism usually ------- Correct Ans ---------- EAD's (triggered activity)
Variance ------- Correct Ans ---------- Take each number in sample, subtract each number from
mean, square each difference, add all, divide sum by number in sample -1
Standard deviation ------- Correct Ans ---------- square root of variance
P value ------- Correct Ans ---------- Probability of certainty / smaller p value means the more
likely the result could not occur by chance
survival curve showing % of patients surviving treatment over time ------- Correct Ans ----------
Kaplan - Meier curves
when measuring EGM's, earliest atrial activation usually from _____ and earliest ventricular
usually from ______ ------- Correct Ans ---------- P wave / QRS
Morady maneuver is used to differentiate ------- Correct Ans ---------- differentiate AT from
AVNRT/AVRT
, Most common arrhythmia ------- Correct Ans ---------- AF
Most common SVT ------- Correct Ans ---------- AVNRT
What type of single use devices can be resterilized and why? ------- Correct Ans ----------
Diagnostic EP electrodes because lumen and technically not a catheter because no lumen
Fr to mm ------- Correct Ans ---------- 1 Fr = .33 mm
Tip inner diameter standard diagnostic cardiac catheters and why ------- Correct Ans ----------
.038 inch / because it is supposed to be used with .035-.038 inch guide wires
What is 2 rules for CMC's like spiral or lasso ------- Correct Ans ---------- 1. Only approved for use
in LA due to chordae tendinea
2. Only rotate shaft clockwise
Stereotaxis catheters ------- Correct Ans ---------- Have magnets in tip for maneuverability in
response to changes in magnetic field
What system remotely steers guided catheters ------- Correct Ans ---------- Hansen robotic system
ACT for using array ------- Correct Ans ---------- ACT 250-300
bipolar cardiac electrodes record local _________ that occur during phase _______ -------
Correct Ans ---------- depolarizations / phase 0
surface EKG leads usually filtered at what ------- Correct Ans ---------- .1 - 100 Hz
