3 things that change automaticity of automatic cel
what phase of ap is resting membr
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Ibhre Ceps Exam Questions And
Answers 100% Correct Latest Updated
2024/2025
Ohm's law equation - ANSWERS✔✔V=IR
EKG monitored patient should be __________, monitor chassis should be
___________ (nonconductive). Why - ANSWERS✔✔ungrounded, grounded.
Grounded patient would be able to conduct leakage currents. we dont want this
lb to kg - ANSWERS✔✔2.2 lb = 1 kg
F to C - ANSWERS✔✔C=5/9(F-32)
C to F - ANSWERS✔✔F=9/5C+32
3 things that change automaticity of automatic cells - ANSWERS✔✔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 - ANSWERS✔✔QT interval
What is main ion transfer during systole - ANSWERS✔✔K+ seeps out, Ca2+
enters
,At rest, what is intracellular/extracellular environment - ANSWERS✔✔inside
negative, outside positive
What phase of AP is resting membrane potential - ANSWERS✔✔phase 4
Nodal depolarization occurs via what channel - ANSWERS✔✔Ca2+ slow channel
Cardiac muscle cell depol occurs via what channel - ANSWERS✔✔Na+ fast
channel
During which phases is cell refractory - ANSWERS✔✔1,2,3
TDP caused by what mechanism usually - ANSWERS✔✔EAD's (triggered
activity)
Variance - ANSWERS✔✔Take each number in sample, subtract each number
from mean, square each difference, add all, divide sum by number in sample -1
Standard deviation - ANSWERS✔✔square root of variance
P value - ANSWERS✔✔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 -
ANSWERS✔✔Kaplan - Meier curves
, when measuring EGM's, earliest atrial activation usually from _____ and earliest
ventricular usually from ______ - ANSWERS✔✔P wave / QRS
Morady maneuver is used to differentiate - ANSWERS✔✔differentiate AT from
AVNRT/AVRT
Most common arrhythmia - ANSWERS✔✔AF
Most common SVT - ANSWERS✔✔AVNRT
What type of single use devices can be resterilized and why? -
ANSWERS✔✔Diagnostic EP electrodes because lumen and technically not a
catheter because no lumen
Fr to mm - ANSWERS✔✔1 Fr = .33 mm
Tip inner diameter standard diagnostic cardiac catheters and why -
ANSWERS✔✔.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 - ANSWERS✔✔1. Only approved
for use in LA due to chordae tendinea
2. Only rotate shaft clockwise
Stereotaxis catheters - ANSWERS✔✔Have magnets in tip for maneuverability in
response to changes in magnetic field
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