IBHRE CEPS Exam with complete
solutions 2024/2025
Ohm's law equation - ANSWER-V=IR
EKG monitored patients should be __________, monitor chassis should be
___________ (nonconductive). Why - ANSWER-ungrounded, grounded. Grounded
patients would be able to conduct leakage currents. we don't 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
solutions 2024/2025
Ohm's law equation - ANSWER-V=IR
EKG monitored patients should be __________, monitor chassis should be
___________ (nonconductive). Why - ANSWER-ungrounded, grounded. Grounded
patients would be able to conduct leakage currents. we don't 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
