IBHRE CEPS EXAM 2025 QUESTIONS WITH 100%
SOLVED ANSWERS!!
Ohm's law equation Answer - V=IR
EKG monitored patient should be __________, monitor chassis should be
___________ (nonconductive). Why Answer - ungrounded, grounded.
Grounded patient would be able to conduct leakage currents. we dont want
this
lb to kg Answer - 2.2 lb = 1 kg
F to C Answer - C=5/9(F-32)
C to F Answer - F=9/5C+32
3 things that change automaticity of automatic cells 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 Answer - QT interval
What is main ion transfer during systole Answer - K+ seeps out, Ca2+ enters
,At rest, what is intracellular/extracellular environment Answer - inside
negative, outside positive
What phase of AP is resting membrane potential Answer - phase 4
Nodal depolarization occurs via what channel Answer - Ca2+ slow channel
Cardiac muscle cell depol occurs via what channel Answer - Na+ fast channel
During which phases is cell refractory Answer - 1,2,3
TDP caused by what mechanism usually Answer - EAD's (triggered activity)
Variance 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 Answer - square root of variance
P value 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 Answer -
Kaplan - Meier curves
when measuring EGM's, earliest atrial activation usually from _____ and
earliest ventricular usually from ______ Answer - P wave / QRS
, Morady maneuver is used to differentiate Answer - differentiate AT from
AVNRT/AVRT
Most common arrhythmia Answer - AF
Most common SVT Answer - AVNRT
What type of single use devices can be resterilized and why? Answer -
Diagnostic EP electrodes because lumen and technically not a catheter because
no lumen
Fr to mm Answer - 1 Fr = .33 mm
Tip inner diameter standard diagnostic cardiac catheters and why 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 Answer - 1. Only approved for use
in LA due to chordae tendinea
2. Only rotate shaft clockwise
Stereotaxis catheters Answer - Have magnets in tip for maneuverability in
response to changes in magnetic field
What system remotely steers guided catheters Answer - Hansen robotic
system
ACT for using array Answer - ACT 250-300
SOLVED ANSWERS!!
Ohm's law equation Answer - V=IR
EKG monitored patient should be __________, monitor chassis should be
___________ (nonconductive). Why Answer - ungrounded, grounded.
Grounded patient would be able to conduct leakage currents. we dont want
this
lb to kg Answer - 2.2 lb = 1 kg
F to C Answer - C=5/9(F-32)
C to F Answer - F=9/5C+32
3 things that change automaticity of automatic cells 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 Answer - QT interval
What is main ion transfer during systole Answer - K+ seeps out, Ca2+ enters
,At rest, what is intracellular/extracellular environment Answer - inside
negative, outside positive
What phase of AP is resting membrane potential Answer - phase 4
Nodal depolarization occurs via what channel Answer - Ca2+ slow channel
Cardiac muscle cell depol occurs via what channel Answer - Na+ fast channel
During which phases is cell refractory Answer - 1,2,3
TDP caused by what mechanism usually Answer - EAD's (triggered activity)
Variance 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 Answer - square root of variance
P value 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 Answer -
Kaplan - Meier curves
when measuring EGM's, earliest atrial activation usually from _____ and
earliest ventricular usually from ______ Answer - P wave / QRS
, Morady maneuver is used to differentiate Answer - differentiate AT from
AVNRT/AVRT
Most common arrhythmia Answer - AF
Most common SVT Answer - AVNRT
What type of single use devices can be resterilized and why? Answer -
Diagnostic EP electrodes because lumen and technically not a catheter because
no lumen
Fr to mm Answer - 1 Fr = .33 mm
Tip inner diameter standard diagnostic cardiac catheters and why 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 Answer - 1. Only approved for use
in LA due to chordae tendinea
2. Only rotate shaft clockwise
Stereotaxis catheters Answer - Have magnets in tip for maneuverability in
response to changes in magnetic field
What system remotely steers guided catheters Answer - Hansen robotic
system
ACT for using array Answer - ACT 250-300
