IBHRE CEPS Exam Questions and
Answers 100% Pass
Ohm's law equation - ✔✔V=IR
EKG monitored patient should be __________, monitor chassis should be ___________
(nonconductive). Why - ✔✔ungrounded, grounded. Grounded patient would be able to
conduct leakage currents. we dont want this
lb to kg - ✔✔2.2 lb = 1 kg
F to C - ✔✔C=5/9(F-32)
C to F - ✔✔F=9/5C+32
3 things that change automaticity of automatic cells - ✔✔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 - ✔✔QT interval
What is main ion transfer during systole - ✔✔K+ seeps out, Ca2+ enters
At rest, what is intracellular/extracellular environment - ✔✔inside negative, outside
positive
What phase of AP is resting membrane potential - ✔✔phase 4
COPYRIGHT © 2025 BY KATELYN WHITMAN, ALL RIGHTS RESERVED 1
,Nodal depolarization occurs via what channel - ✔✔Ca2+ slow channel
Cardiac muscle cell depol occurs via what channel - ✔✔Na+ fast channel
During which phases is cell refractory - ✔✔1,2,3
TDP caused by what mechanism usually - ✔✔EAD's (triggered activity)
Variance - ✔✔Take each number in sample, subtract each number from mean, square
each difference, add all, divide sum by number in sample -1
Standard deviation - ✔✔square root of variance
P value - ✔✔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 - ✔✔Kaplan -
Meier curves
when measuring EGM's, earliest atrial activation usually from _____ and earliest
ventricular usually from ______ - ✔✔P wave / QRS
Morady maneuver is used to differentiate - ✔✔differentiate AT from AVNRT/AVRT
Most common arrhythmia - ✔✔AF
Most common SVT - ✔✔AVNRT
What type of single use devices can be resterilized and why? - ✔✔Diagnostic EP
electrodes because lumen and technically not a catheter because no lumen
Fr to mm - ✔✔1 Fr = .33 mm
Tip inner diameter standard diagnostic cardiac catheters and why - ✔✔.038 inch /
because it is supposed to be used with .035-.038 inch guide wires
COPYRIGHT © 2025 BY KATELYN WHITMAN, ALL RIGHTS RESERVED 2
, What is 2 rules for CMC's like spiral or lasso - ✔✔1. Only approved for use in LA due to
chordae tendinea
2. Only rotate shaft clockwise
Stereotaxis catheters - ✔✔Have magnets in tip for maneuverability in response to
changes in magnetic field
What system remotely steers guided catheters - ✔✔Hansen robotic system
ACT for using array - ✔✔ACT 250-300
bipolar cardiac electrodes record local _________ that occur during phase _______ -
✔✔depolarizations / phase 0
surface EKG leads usually filtered at what - ✔✔.1 - 100 Hz
Normal EGM filter settings - ✔✔30 - 300 Hz
What to do if T waves interfere with A/V and why - ✔✔Increase the high pass filter
because T waves are lower frequency as well as far field
Unipolar filter setting - ✔✔.05 - 300 Hz
How each is measured: Diagnostic catheter OD , Inflated balloon cath OD, Needle OD,
Guide wire - ✔✔Diag: Fr / Balloon: mm / Needle: gauge / GW: inch (thousandth of
inches)
Standard sizes of micropuncture introducer sets and their purpose - ✔✔21 gauge needle
/ .018 inch wire. Purpose of micropuncture introducer set is for placement of .035-.038
inch GW
Best needle to use for pericardial space via subxyphoid approach - ✔✔Tuohy needle
COPYRIGHT © 2025 BY KATELYN WHITMAN, ALL RIGHTS RESERVED 3
Answers 100% Pass
Ohm's law equation - ✔✔V=IR
EKG monitored patient should be __________, monitor chassis should be ___________
(nonconductive). Why - ✔✔ungrounded, grounded. Grounded patient would be able to
conduct leakage currents. we dont want this
lb to kg - ✔✔2.2 lb = 1 kg
F to C - ✔✔C=5/9(F-32)
C to F - ✔✔F=9/5C+32
3 things that change automaticity of automatic cells - ✔✔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 - ✔✔QT interval
What is main ion transfer during systole - ✔✔K+ seeps out, Ca2+ enters
At rest, what is intracellular/extracellular environment - ✔✔inside negative, outside
positive
What phase of AP is resting membrane potential - ✔✔phase 4
COPYRIGHT © 2025 BY KATELYN WHITMAN, ALL RIGHTS RESERVED 1
,Nodal depolarization occurs via what channel - ✔✔Ca2+ slow channel
Cardiac muscle cell depol occurs via what channel - ✔✔Na+ fast channel
During which phases is cell refractory - ✔✔1,2,3
TDP caused by what mechanism usually - ✔✔EAD's (triggered activity)
Variance - ✔✔Take each number in sample, subtract each number from mean, square
each difference, add all, divide sum by number in sample -1
Standard deviation - ✔✔square root of variance
P value - ✔✔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 - ✔✔Kaplan -
Meier curves
when measuring EGM's, earliest atrial activation usually from _____ and earliest
ventricular usually from ______ - ✔✔P wave / QRS
Morady maneuver is used to differentiate - ✔✔differentiate AT from AVNRT/AVRT
Most common arrhythmia - ✔✔AF
Most common SVT - ✔✔AVNRT
What type of single use devices can be resterilized and why? - ✔✔Diagnostic EP
electrodes because lumen and technically not a catheter because no lumen
Fr to mm - ✔✔1 Fr = .33 mm
Tip inner diameter standard diagnostic cardiac catheters and why - ✔✔.038 inch /
because it is supposed to be used with .035-.038 inch guide wires
COPYRIGHT © 2025 BY KATELYN WHITMAN, ALL RIGHTS RESERVED 2
, What is 2 rules for CMC's like spiral or lasso - ✔✔1. Only approved for use in LA due to
chordae tendinea
2. Only rotate shaft clockwise
Stereotaxis catheters - ✔✔Have magnets in tip for maneuverability in response to
changes in magnetic field
What system remotely steers guided catheters - ✔✔Hansen robotic system
ACT for using array - ✔✔ACT 250-300
bipolar cardiac electrodes record local _________ that occur during phase _______ -
✔✔depolarizations / phase 0
surface EKG leads usually filtered at what - ✔✔.1 - 100 Hz
Normal EGM filter settings - ✔✔30 - 300 Hz
What to do if T waves interfere with A/V and why - ✔✔Increase the high pass filter
because T waves are lower frequency as well as far field
Unipolar filter setting - ✔✔.05 - 300 Hz
How each is measured: Diagnostic catheter OD , Inflated balloon cath OD, Needle OD,
Guide wire - ✔✔Diag: Fr / Balloon: mm / Needle: gauge / GW: inch (thousandth of
inches)
Standard sizes of micropuncture introducer sets and their purpose - ✔✔21 gauge needle
/ .018 inch wire. Purpose of micropuncture introducer set is for placement of .035-.038
inch GW
Best needle to use for pericardial space via subxyphoid approach - ✔✔Tuohy needle
COPYRIGHT © 2025 BY KATELYN WHITMAN, ALL RIGHTS RESERVED 3
