IBHRE CEPS UPDATED Exam 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
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
