Page 1 of 266
IBHRE Certified Cardiac Device Specialist
(CCDS) FINAL EXAM 500 QUESTIONS AND
CORRECT ANSWERS LATEST UPDATE THIS
YEAR
Which of the following conditions has been shown to cause: an increase in stimulation
threshold, a wide QRS, latency, or undersensing?
Select one:
a. Hypokalemia
b. Hyperkalemia
c. Hypercalcemia
d. Hypocalcemia
The correct answer is: Hyperkalemia
Which of the following RV leads would be least prone to anodal stimulation in an extended
bipolar configuration with a unipolar LV lead when BiV pacing?
Select one:
a. A brady lead with an anode 5 mm2 and cathode 1.2 mm2
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, Page 2 of 266
b. A brady lead with an anode 4.2 mm2 and cathode of 5 mm2
c. An integrated ICD lead with an anode 450 mm2 and cathode 2 mm2 This is correct!
d. A dedicated bipolar ICD lead with an anode 6 mm2 and cathode 2.5 mm2
The correct answer is: An integrated ICD lead with an anode 450 mm2 and cathode 2 mm2
If one has the physiologic substrate for reentry, which of the following would be necessary to
initiate the reentry tachycardia?
Select one:
a. Heterogeneity of refractory
b. Differential conduction of the pathways This is incorrect.
c. Two pathways connected distally and proximally
d. Unidirectional block of one pathway
The correct answer is: Unidirectional block of one pathway
The term S2 refers to the:
Select one:
a. Drive cycle length
b. First premature stimulus
c. Second premature stimulus This is incorrect.
d. Second incremental burst
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The correct answer is: First premature stimulus
Faster and longer range telemetry, new therapies, and physiologic sensors in pacemaker
devices require higher peak power outside the range of Li/I2 batteries. Which of the following
battery chemistries is now incorporated into some pacemakers?
Select one:
a. Lithium silver vanadium oxide & lithium carbon monofluoride
b. Lithium ion batteries
c. Nickel cadmium batteries
d. Lithium thionyl chloride batteries
The correct answer is: Lithium silver vanadium oxide & lithium carbon monofluoride
Fluoroquinolones, a new generation of broad spectrum oral antibiotics, is known for which of
the following cardiac effects?
Select one:
a. Suppressing sinus node function
b. Slowing conduction through the AV node
c. Positive inotropic effects
d. Prolonging the QT
The correct answer is: Prolonging the QT
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, Page 4 of 266
The horizontal asymptote of a strength duration curve defines which of the following:
Select one:
a. Charge
b. Pulse width threshold
c. Rheobase
d. Chronaxie
The correct answer is: Rheobase
Which of the following pacemaker components is most susceptible to cumulative damage
from high doses of radiation?
Select one:
a. Accelerometer
b. Transistors
c. Zener diode
d. CMOS
The correct answer is: CMOS
4
IBHRE Certified Cardiac Device Specialist
(CCDS) FINAL EXAM 500 QUESTIONS AND
CORRECT ANSWERS LATEST UPDATE THIS
YEAR
Which of the following conditions has been shown to cause: an increase in stimulation
threshold, a wide QRS, latency, or undersensing?
Select one:
a. Hypokalemia
b. Hyperkalemia
c. Hypercalcemia
d. Hypocalcemia
The correct answer is: Hyperkalemia
Which of the following RV leads would be least prone to anodal stimulation in an extended
bipolar configuration with a unipolar LV lead when BiV pacing?
Select one:
a. A brady lead with an anode 5 mm2 and cathode 1.2 mm2
1
, Page 2 of 266
b. A brady lead with an anode 4.2 mm2 and cathode of 5 mm2
c. An integrated ICD lead with an anode 450 mm2 and cathode 2 mm2 This is correct!
d. A dedicated bipolar ICD lead with an anode 6 mm2 and cathode 2.5 mm2
The correct answer is: An integrated ICD lead with an anode 450 mm2 and cathode 2 mm2
If one has the physiologic substrate for reentry, which of the following would be necessary to
initiate the reentry tachycardia?
Select one:
a. Heterogeneity of refractory
b. Differential conduction of the pathways This is incorrect.
c. Two pathways connected distally and proximally
d. Unidirectional block of one pathway
The correct answer is: Unidirectional block of one pathway
The term S2 refers to the:
Select one:
a. Drive cycle length
b. First premature stimulus
c. Second premature stimulus This is incorrect.
d. Second incremental burst
2
, Page 3 of 266
The correct answer is: First premature stimulus
Faster and longer range telemetry, new therapies, and physiologic sensors in pacemaker
devices require higher peak power outside the range of Li/I2 batteries. Which of the following
battery chemistries is now incorporated into some pacemakers?
Select one:
a. Lithium silver vanadium oxide & lithium carbon monofluoride
b. Lithium ion batteries
c. Nickel cadmium batteries
d. Lithium thionyl chloride batteries
The correct answer is: Lithium silver vanadium oxide & lithium carbon monofluoride
Fluoroquinolones, a new generation of broad spectrum oral antibiotics, is known for which of
the following cardiac effects?
Select one:
a. Suppressing sinus node function
b. Slowing conduction through the AV node
c. Positive inotropic effects
d. Prolonging the QT
The correct answer is: Prolonging the QT
3
, Page 4 of 266
The horizontal asymptote of a strength duration curve defines which of the following:
Select one:
a. Charge
b. Pulse width threshold
c. Rheobase
d. Chronaxie
The correct answer is: Rheobase
Which of the following pacemaker components is most susceptible to cumulative damage
from high doses of radiation?
Select one:
a. Accelerometer
b. Transistors
c. Zener diode
d. CMOS
The correct answer is: CMOS
4
