IBHRE PRACTICE EXAM 2026 PREMIUM REVIEW
QUESTIONS CORRECT RESPONSES
◉ AV sequentially paced patients with frequent ventricular ectopy
should have the following pacemaker parameters programmed to
decrease the chance of competition:
a) short blanking period
b) slower base rate
c) increased ventricular refractory period
d) none of the above. Answer: A. Short Blanking Period
◉ Low threshold electrode materials include each of the following
EXCEPT:
a) iridium oxide
b) elgiloy
c) platinized platinum
d) titanium nitride. Answer: B. Elgiloy
◉ The strength duration curve resulting in a parabolic shape is
described by which of the following formulas?
,a) I x t
b) I x V x t
c) I x R
d) all of the above. Answer: B. I x V x t
◉ The ventriculoatrial conduction time of a pacemaker patient with
a typical endless-loop-tachycardia may be calculated by which
equation?
a) (upper rate limit interval) - ( AV delay + PVARP)
b) (upper rate limit interval) - ( AV delay + PVARP + Wenckebach
interval
c) (lower rate limit interval) - ( upper rate limit interval)
d) none of the above. Answer: D. None of the above
◉ Which of the following programmings would not prevent
crosstalk?
a) a prolonged blanking period
b) "safety pacing"
c) low atrial output
d) less sensitive ventricular sensitivity. Answer: B. "Safety Pacing"
,◉ The most commonly used battery chemistry in ICDs is:
a) lithium thionyl chloride
b) lithium manganese dioxide
c) lithium silver vanadium oxide
d) lithium manganese dioxide. Answer: C. Lithium Silver Vanadium
Oxide
◉ The purpose of a capacitor in an electrical circuit is to:
a) convert AC to DC current
b) store electrical charge
c) rapidly switch battery voltage on or off
d) limit current flow to a single direction. Answer: B. Store Electrical
Charge
◉ A programming mode that would NOT be utilized to manage
intermittent atrial fibrillation in a patient with a DDD pacemaker is:.
a) DDI
b) DVI
, c) VDD
d) VVI. Answer: C. VDD
◉ Variations in stimulus morphology on the surface ECG of an
analog recorder may be caused by:
a) a dislodged electrode
b) an electrical short
c) changes in patient position
d) all of the above. Answer: D. All of the above
◉ All of the following have been used as ERI magnet responses
except:
a) abrupt increase in rate
b) abrupt decrease in rate
c) gradual increase in rate
d) gradual decrease in rate. Answer: C. Gradual Increase In Rate
◉ Which of the following has not been used as an indicator of
battery depletion?
QUESTIONS CORRECT RESPONSES
◉ AV sequentially paced patients with frequent ventricular ectopy
should have the following pacemaker parameters programmed to
decrease the chance of competition:
a) short blanking period
b) slower base rate
c) increased ventricular refractory period
d) none of the above. Answer: A. Short Blanking Period
◉ Low threshold electrode materials include each of the following
EXCEPT:
a) iridium oxide
b) elgiloy
c) platinized platinum
d) titanium nitride. Answer: B. Elgiloy
◉ The strength duration curve resulting in a parabolic shape is
described by which of the following formulas?
,a) I x t
b) I x V x t
c) I x R
d) all of the above. Answer: B. I x V x t
◉ The ventriculoatrial conduction time of a pacemaker patient with
a typical endless-loop-tachycardia may be calculated by which
equation?
a) (upper rate limit interval) - ( AV delay + PVARP)
b) (upper rate limit interval) - ( AV delay + PVARP + Wenckebach
interval
c) (lower rate limit interval) - ( upper rate limit interval)
d) none of the above. Answer: D. None of the above
◉ Which of the following programmings would not prevent
crosstalk?
a) a prolonged blanking period
b) "safety pacing"
c) low atrial output
d) less sensitive ventricular sensitivity. Answer: B. "Safety Pacing"
,◉ The most commonly used battery chemistry in ICDs is:
a) lithium thionyl chloride
b) lithium manganese dioxide
c) lithium silver vanadium oxide
d) lithium manganese dioxide. Answer: C. Lithium Silver Vanadium
Oxide
◉ The purpose of a capacitor in an electrical circuit is to:
a) convert AC to DC current
b) store electrical charge
c) rapidly switch battery voltage on or off
d) limit current flow to a single direction. Answer: B. Store Electrical
Charge
◉ A programming mode that would NOT be utilized to manage
intermittent atrial fibrillation in a patient with a DDD pacemaker is:.
a) DDI
b) DVI
, c) VDD
d) VVI. Answer: C. VDD
◉ Variations in stimulus morphology on the surface ECG of an
analog recorder may be caused by:
a) a dislodged electrode
b) an electrical short
c) changes in patient position
d) all of the above. Answer: D. All of the above
◉ All of the following have been used as ERI magnet responses
except:
a) abrupt increase in rate
b) abrupt decrease in rate
c) gradual increase in rate
d) gradual decrease in rate. Answer: C. Gradual Increase In Rate
◉ Which of the following has not been used as an indicator of
battery depletion?
