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