Page 1 of 62
IBHRE CCDS EXAM ACTUAL EXAM ALL 150
QUESTIONS and CORRECT ANSWERS LATEST
UPDATE THIS YEAR
For treatment of arrhythmias, most drugs work by:
Select one:
a. Increasing the export of Ca into the cell
b. Altering conductivity or refractoriness
c. Maintaining a consistent cardiac action potential This is incorrect.
d. Soothing irritable foci
The correct answer is: Altering conductivity or refractoriness
The electrical circuit that converts a signal with both positive and negative components into a
signal with only one component?
Select one:
a. Resistor
b. Rectifier
c. Diode
d. Capacitor
The correct answer is: Rectifier
1
, Page 2 of 62
Which of the above 3 month stimulation threshold graphs would be most characteristic of
steroid eluting tined atrial lead?
Select one:
a. A
b. B This is incorrect.
c. C
d. D
The correct answer is: D
Which of the following lead insulation materials are known for reducing fibroblast ingrowth
and susceptibility to MIO and ESC, respectively?
Select one:
a.Silicone and 55D polyurethane This is incorrect.
b.Silicone and ePTFE
c.80A polyurethane and silicone/polyurethane hybrid
d.ePTFE and 80A polyurethane
The correct answer is:ePTFE and 80A polyurethane
2
, Page 3 of 62
The ventriculoatrial conduction time of a pacemaker patient with a typical endless-loop-
tachycardia may be calculated by which equation?
Select one:
a. Rate - programmed A-pace AV delay
b. Rate - programmed A-sense AV delay This is incorrect.
c. Lower rate limit - upper rate limit
d. None of the above
The correct answer is: None of the above
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
3
, Page 4 of 62
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
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:
4
IBHRE CCDS EXAM ACTUAL EXAM ALL 150
QUESTIONS and CORRECT ANSWERS LATEST
UPDATE THIS YEAR
For treatment of arrhythmias, most drugs work by:
Select one:
a. Increasing the export of Ca into the cell
b. Altering conductivity or refractoriness
c. Maintaining a consistent cardiac action potential This is incorrect.
d. Soothing irritable foci
The correct answer is: Altering conductivity or refractoriness
The electrical circuit that converts a signal with both positive and negative components into a
signal with only one component?
Select one:
a. Resistor
b. Rectifier
c. Diode
d. Capacitor
The correct answer is: Rectifier
1
, Page 2 of 62
Which of the above 3 month stimulation threshold graphs would be most characteristic of
steroid eluting tined atrial lead?
Select one:
a. A
b. B This is incorrect.
c. C
d. D
The correct answer is: D
Which of the following lead insulation materials are known for reducing fibroblast ingrowth
and susceptibility to MIO and ESC, respectively?
Select one:
a.Silicone and 55D polyurethane This is incorrect.
b.Silicone and ePTFE
c.80A polyurethane and silicone/polyurethane hybrid
d.ePTFE and 80A polyurethane
The correct answer is:ePTFE and 80A polyurethane
2
, Page 3 of 62
The ventriculoatrial conduction time of a pacemaker patient with a typical endless-loop-
tachycardia may be calculated by which equation?
Select one:
a. Rate - programmed A-pace AV delay
b. Rate - programmed A-sense AV delay This is incorrect.
c. Lower rate limit - upper rate limit
d. None of the above
The correct answer is: None of the above
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
3
, Page 4 of 62
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
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:
4
