IBHRE CCDS Exam Latest 2026/2027 Questions and
Correct Detailed Answers Already Graded A+
Which of the following lead failure mechanisms involves intimate contact with
reactive metals and is an inside out process?
a) environmental stress cracking (ESC)
b) subclavian crush (SC)
c) silicone ion degradation (SID)
d) metal ion oxidation (MIO) - CORRECT ANSWER-D. Metal Ion Oxidation
(MIO)
Over time, the battery cell impedance of a lithium iodine powered pacemaker:
a) increases
b) decreases
c) changes only at EOS
d) remains constant - CORRECT ANSWER-A. Increases
,In patients with reentry arrhythmias, tachycardia potentially could be initiated or
terminated in EP lab by which of the following?
a) single extrastimuli
b) multiple extrastimuli
c) incremental pacing
d) all of the above - CORRECT ANSWER-D. All the above
Which type of rate modulation sensor requires a special lead?
a) accelerometer
b) piezoelectric activity
c) minute ventilation
d) temperature - CORRECT ANSWER-D. Temperature
Which of the following studies using an endpoint of total mortality looked at
whether maintaining rate control or normal sinus rhythm is better in high risk
atrial fib patients?
a) AFFIRM
,b) MIRACLE
c) COMPANION
d) MUSTIC - CORRECT ANSWER-A. AFFIRM
Tapping on a pulse generator with which type of sensor will increase the pacing
rate?
a) accelerometer
b) piezoelectric activity
c) minute ventilation
d) temperature - CORRECT ANSWER-B. Piezoelectric Activity
A band-pass filter modifies incoming signals according to which of the following
units of measure?
a) millivolts
b) hertz
c) coulombs
d) angstroms - CORRECT ANSWER-B. Hertz (Hz)
, The concentration of ions near the stimulation electrode following a pacemaker
output pulse is termed:
a) polarization
b) ionization
c) depolarization
d) repolarization - CORRECT ANSWER-A. Polarization
The periodic reformation of aluminum electrolytic capacitors accomplishes which
of the following?
a) repairs imperfections in the dielectric layer
b) requires the application of the rated voltage to the capacitor
c) permits assessment of ERI in some ICDs
d) all of the above - CORRECT ANSWER-D. All the above
The strength duration curve resulting in a parabolic shape is described by which of
the following formulas?
a) I x t
Correct Detailed Answers Already Graded A+
Which of the following lead failure mechanisms involves intimate contact with
reactive metals and is an inside out process?
a) environmental stress cracking (ESC)
b) subclavian crush (SC)
c) silicone ion degradation (SID)
d) metal ion oxidation (MIO) - CORRECT ANSWER-D. Metal Ion Oxidation
(MIO)
Over time, the battery cell impedance of a lithium iodine powered pacemaker:
a) increases
b) decreases
c) changes only at EOS
d) remains constant - CORRECT ANSWER-A. Increases
,In patients with reentry arrhythmias, tachycardia potentially could be initiated or
terminated in EP lab by which of the following?
a) single extrastimuli
b) multiple extrastimuli
c) incremental pacing
d) all of the above - CORRECT ANSWER-D. All the above
Which type of rate modulation sensor requires a special lead?
a) accelerometer
b) piezoelectric activity
c) minute ventilation
d) temperature - CORRECT ANSWER-D. Temperature
Which of the following studies using an endpoint of total mortality looked at
whether maintaining rate control or normal sinus rhythm is better in high risk
atrial fib patients?
a) AFFIRM
,b) MIRACLE
c) COMPANION
d) MUSTIC - CORRECT ANSWER-A. AFFIRM
Tapping on a pulse generator with which type of sensor will increase the pacing
rate?
a) accelerometer
b) piezoelectric activity
c) minute ventilation
d) temperature - CORRECT ANSWER-B. Piezoelectric Activity
A band-pass filter modifies incoming signals according to which of the following
units of measure?
a) millivolts
b) hertz
c) coulombs
d) angstroms - CORRECT ANSWER-B. Hertz (Hz)
, The concentration of ions near the stimulation electrode following a pacemaker
output pulse is termed:
a) polarization
b) ionization
c) depolarization
d) repolarization - CORRECT ANSWER-A. Polarization
The periodic reformation of aluminum electrolytic capacitors accomplishes which
of the following?
a) repairs imperfections in the dielectric layer
b) requires the application of the rated voltage to the capacitor
c) permits assessment of ERI in some ICDs
d) all of the above - CORRECT ANSWER-D. All the above
The strength duration curve resulting in a parabolic shape is described by which of
the following formulas?
a) I x t
